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Sieve

A sieve, also known as a fine mesh strainer or sift, is a device with meshes or perforations through which finer particles of a mixture—such as ashes, flour, or sand—are separated from larger particles by manual shaking, mechanical vibration, or other force.^[1] The concept and use of sieves trace back thousands of years to ancient civilizations, where they served essential roles in agriculture and food processing. In ancient Egypt, sieves constructed from woven reeds and grasses were utilized to size and grade grain harvests, facilitating the separation of chaff from kernels.^[2] By the classical period, sieves appeared in Greek and Roman societies under names like koskinon and cribrum, used in daily life. Etymologically, the English word "sieve" derives from Old English sife, rooted in Proto-Germanic sib-, reflecting its long-standing association with sifting and straining across Indo-European languages.^[3] In contemporary applications, sieves play diverse roles across domestic, scientific, and industrial domains. In kitchens, they are indispensable for tasks like sifting dry ingredients to aerate flour, straining pasta or vegetables from boiling water, or purifying stocks and sauces, typically featuring stainless steel or nylon meshes in sizes ranging from fine (around 0.5 mm openings) to coarse (up to 5 mm).^[4] In laboratories and engineering, standardized test sieves enable precise particle size distribution analysis for materials like soils, aggregates, and powders, adhering to protocols such as ASTM D6913, which outlines methods for separating particles into size ranges from 75 µm to 75 mm.^[5] Internationally, ISO 3310-1 specifies woven wire cloth sieves for grading purposes, ensuring consistency in mesh apertures from 20 µm to 125 mm for applications in mining, pharmaceuticals, and quality control. These standards, developed by bodies like the American Society for Testing and Materials (ASTM) and the International Organization for Standardization (ISO), underscore sieves' evolution from rudimentary tools to calibrated instruments critical for reproducible scientific measurement.^[6]

Definition and Principles

Definition

A sieve is a physical device designed for particle separation, consisting of a mesh or perforated surface that allows materials to be sorted by size as they pass over or through it. This tool operates by retaining larger particles on the mesh while permitting smaller ones to pass through the apertures, facilitating the classification of granular or powdered substances based on dimensional differences.^[7]^[8] The primary components of a sieve include a rigid frame that provides structural support, the mesh or screen material featuring uniformly spaced apertures, and often a support grid or clamping mechanism to secure the assembly. The frame, typically cylindrical or square, holds the sieve cloth in place, while the mesh—commonly woven wire or perforated plate—defines the separation threshold through its opening sizes. These elements ensure durability and precision during use, with the overall construction adhering to standards for consistent performance in particle analysis.^[9]^[10]^[11] Sieves serve essential purposes in material processing, such as sorting solids from liquids or other solids in wet or dry conditions, grading particles into size fractions for quality control, and removing impurities to purify bulk materials. In industries like pharmaceuticals, mining, and food production, they enable efficient categorization without chemical alteration, supporting applications from soil analysis to powder formulation.^[12]^[13]^[14] The separation mechanism in sieving relies on fundamental physical principles, including gravity to draw particles downward through the mesh, vibration to agitate and prevent clogging by creating dynamic voids, or applied pressure to force material flow. Mesh size is quantified either by mesh number, which indicates the number of apertures per linear inch (with higher numbers denoting finer screens), or directly in microns for the aperture width, allowing precise calibration for specific particle ranges. For instance, a 200-mesh sieve typically has openings around 74 microns, balancing throughput and resolution.^[15]^[16]^[17]^[18]

Sieving Process

The sieving process involves separating particles based on size by passing a sample through a stack of sieves with progressively smaller apertures. The procedure begins with loading a representative sample onto the top sieve of the stack, ensuring the amount is appropriate to avoid overloading, such as 200 ml for meshes around 2 mm or less for finer apertures. Agitation is then applied to facilitate particle movement, either manually through shaking or tapping or mechanically via vibratory shakers that provide three-dimensional motion with controlled amplitude (typically 0-3 mm) and duration until the residue stabilizes, often indicated by less than 0.1% weight change per minute. Finally, the fractions retained on each sieve and the pan are collected, weighed to the nearest 0.1 g, and analyzed to determine the particle size distribution.^[19]^[20] Several factors influence the efficiency of the sieving process. Particle shape affects passage probability, as elongated or irregular shapes may align to pass through apertures larger than their smallest dimension or get caught otherwise. Size distribution determines the sieve stack configuration and sample volume to ensure representative separation without excessive fines overwhelming lower sieves. Moisture content can lead to agglomeration, reducing flow and requiring adjustments like drying the sample beforehand. Sieve aperture uniformity, governed by standards such as ASTM E11, ensures reproducible results by limiting variations in opening sizes to specified tolerances (e.g., average opening deviation of ± variation Y).^[15]^[19]^[21]^[7] Sieving actions vary by material properties and desired outcomes. Dry sieving, the most common method, relies on mechanical agitation without liquids and suits non-cohesive granular materials from 40 μm to 125 mm. Wet sieving incorporates a liquid medium, such as water, to disperse fines and prevent clogging in cohesive or moist samples, often followed by drying for weighing. Air-assisted sieving uses compressed air jets to fluidize and propel fine particles (down to 10 μm) through the mesh, ideal for dry powders prone to electrostatic buildup.^[15]^[22]^[19] Common challenges in sieving include clogging, where near-sized particles block apertures, and blinding, caused by fine or sticky particles adhering to the mesh, both reducing throughput and accuracy. Mitigation strategies involve brushing coarser sieves (>100 mesh) to dislodge residues without damaging the wire cloth, or applying ultrasonics, which transmit high-frequency vibrations (typically 20-36 kHz) to the mesh for deblinding, preventing blockages and extending mesh life.^[20]^[15]^[23]

History

Ancient and Traditional Sieves

The earliest known archaeological evidence for sieves dates to ancient Egypt during the New Kingdom period, where a well-preserved example made from woven reeds and rushes was discovered in the Memphite Region at Lisht North, dating to approximately 1295–1070 BCE. This artifact, with a diameter of about 41 cm, exemplifies early sieving tools used for separating fine particles from coarser materials in grain processing.^[24] In contemporary Mesopotamia, similar techniques employed woven reeds or animal hair to sift grains, as indicated by textual and contextual evidence from Sumerian agricultural practices, though physical artifacts are rarer due to perishable materials.^[25] Traditional sieves played a vital role in pre-industrial agriculture across various societies, primarily for sifting flour from ground grains and separating seeds from chaff or debris. In ancient Egyptian farming, palm-leaf and stick sieves were essential for the final cleaning of wheat before milling, ensuring the removal of impurities to produce usable meal.^[26] These manual tools allowed farmers to refine harvested crops efficiently without mechanized aid. Additionally, in indigenous cultures, sieves facilitated gold panning by straining sediments from riverbeds, as seen in ancient hydrophobic attachment methods using oily animal hair to capture fine gold particles from ore.^[27] Cultural adaptations of sieves appeared in diverse regions, such as ancient Rome, where they complemented winnowing processes by further sorting threshed grain after tossing it in the air to remove husks.^[28] In medieval Europe, sieves were integral to milling operations, where hand-sifted temse screens separated fine flour from bran in water-powered or manual mills, supporting widespread bread production.^[29] Over time, ancient and traditional sieves evolved from simple natural materials like reeds, grasses, and animal hair—prioritized for their availability and flexibility—to more structured basic frames, often wooden, that held woven meshes for durability in repeated agricultural tasks. This progression maintained a focus on manual operation, reflecting the labor-intensive nature of pre-industrial societies without introducing mechanization.^[30]

Modern Developments

The Industrial Revolution marked a pivotal shift in sieve technology, with British manufacturers pioneering the use of wire mesh for more durable and precise sieving. In 1798, the production of wire cloth on weaving machines enabled the creation of finer, uniform meshes suitable for industrial applications such as mining and agriculture.^[31] By the late 19th century, innovations like the steam-powered loom for wire mesh weaving, introduced by Thomas Locker & Co. in 1886, automated the manufacturing process and facilitated the production of steam-powered sieving machines for large-scale material separation.^[32] In the 20th century, sieve technology advanced through standardization efforts and mechanical enhancements, particularly for quality control in emerging industries. W.S. Tyler established the foundational standards for test sieves around the 1920s, laying the groundwork for consistent particle size analysis that influenced global practices, including the US Standard Test Sieve Series as a key milestone.^[33] The adoption of electric vibrators in mid-century sieving equipment, evolving from pneumatic systems, improved efficiency and precision in operations like powder processing, with widespread use by the 1950s in laboratories and factories.^[34] Recent advancements up to 2025 have integrated automation and digital technologies to enhance accuracy and sustainability in sieving. Automated sieve shakers with electromagnetic drives now streamline particle analysis, reducing manual intervention and ensuring reproducible results through programmable 3D motions.^[35] Laser etching on sieve frames and meshes provides precise traceability with individual serial numbers, enabling high-precision applications in pharmaceuticals and nanotechnology.^[36] Digital sieve shakers equipped with sensors for vibration monitoring and frequency control further optimize performance, as seen in models with integrated manometers for real-time data.^[37] Globalization has transformed sieve manufacturing, with mass production shifting to Asia to meet rising demand for cost-effective, high-volume output. Asia's rapid industrialization has driven growth in the sieving equipment market, supported by investments in advanced production technologies.^[38] This shift has also prompted a move toward sustainable practices, including energy-efficient designs and reduced e-waste in vibro sifters and industrial sieves.^[39]

Types and Construction

Hand-Held and Wooden Sieves

Hand-held sieves are portable devices designed for manual operation, typically featuring a handle or rim for easy gripping during small-scale tasks like sifting flour, seeds, or soil. These sieves facilitate the separation of fine particles from coarser ones through simple shaking or tapping motions, making them suitable for household and garden applications. Traditional examples often measure 4 to 12 inches in diameter, allowing for efficient handling without mechanical assistance.^[40] Wooden sieves represent a longstanding construction style, utilizing hardwood frames such as ash, beech, oak, elm, or maple for their strength and availability. The frame is typically formed by steaming and bending thin strips into a circular or oval rim, secured with wooden lacing strips or iron tacks, while the mesh consists of woven materials like cane, horsehair, silk, or later galvanised wire stretched taut across the opening. This design offers advantages in durability, as the hardwoods resist wear during repeated use, and low cost, relying on locally sourced timber and natural fibers. For instance, Shaker communities produced such sieves from bentwood rims with horsehair meshes starting in 1810, emphasizing craftsmanship for practical longevity.^[41]^[42]^[40] Variations include the tambour sieve, or tamis, a drum-shaped wooden model with a fine mesh ideal for aerating and refining flour in baking, originating as one of the oldest sieve styles for culinary refinement. In contrast, riddle sieves employ coarser meshes for gardening, sifting soil to remove stones, roots, and debris while preserving finer tilth for planting. Maintenance of wooden sieves involves protecting against moisture, which can cause warping by unevenly expanding the wood fibers; proper care includes drying thoroughly after use and storing in a low-humidity environment to maintain structural integrity.^[43]^[42]^[44] Although wooden sieves have declined in widespread use, supplanted by inexpensive plastic versions for everyday convenience, they endure in artisanal baking for their aesthetic and tactile qualities, as well as in crafts and heritage gardening where traditional methods are valued. In Britain, for example, as of 2009 mass production had dwindled to a single craftsman producing up to 120 units weekly; as of the 2020s, the craft persists through individual artisans like Steve Overthrow, highlighting their niche persistence.^[42]^[45]

Industrial and Mechanical Sieves

Industrial and mechanical sieves represent large-scale, automated systems designed for high-volume material processing in manufacturing environments, utilizing powered mechanisms to enhance separation efficiency beyond manual methods. These sieves typically employ vibration or rotational forces to stratify particles by size, enabling continuous operation in industrial settings.^[46] Key types include rotary, vibrating, and gyratory models. Rotary vibrating sieves generate circular motion through a vertical motor mounted on the sieve frame, with upper and lower eccentric weights attached to the motor shaft creating centrifugal force for multi-directional vibration. Vibrating sieves, often linear or circular, rely on unbalanced motors to produce oscillatory motion that propels material across the screen surface. Gyratory sieves simulate gentle hand-sifting via a high-speed, low-amplitude circular or elliptical motion, driven by a centralized shaft or eccentric system for precise particle classification. Common components across these models include three-phase electric motors, adjustable eccentric weights or blocks to tune vibration amplitude and direction, screen frames, and suspension mounts like rubber isolators to minimize noise and transmit energy effectively.^[47]^[48]^[49] Industrial designs often feature multi-deck configurations, where stackable screens allow sequential grading of materials into multiple fractions, typically up to five decks for enhanced separation without increasing footprint. These stackable systems support high capacities, ranging from 50 kg/h for fine powders to over 50 tons per hour for bulk aggregates, depending on screen size, material properties, and vibration intensity. For instance, a 2000 mm diameter rotary model can process 1.3 to 2.5 tons per hour of dry solids. Recent innovations include ultrasonic vibrating sieves that use high-frequency ultrasound (20-40 kHz) to prevent mesh blinding for ultra-fine screening down to 20 µm, and smart systems with sensors for real-time monitoring, enhancing efficiency in pharmaceuticals and nano-materials processing as of 2025.^[46]^[50]^[47]^[51] In pharmaceuticals, mechanical sifters ensure powder uniformity by removing agglomerates, dust, and oversized particles from granules, achieving consistent particle size distribution critical for tablet formulation and quality control. Similarly, in recycling, gyratory or vibrating separators sort waste streams by classifying plastics, metals, glass, and wood fractions, facilitating efficient material recovery and reducing contamination in downstream processes like extrusion or melting.^[46]^[52] Safety and efficiency are prioritized through enclosed housings with dust-tight seals to contain fine particulates and prevent airborne exposure, often integrated with dust collection systems for compliance with occupational health standards. Variable speed controls, achieved via frequency inverters or adjustable eccentric weights, allow operators to optimize vibration frequency (typically 15–60 Hz, depending on the sieve type and material) for different materials, minimizing energy use and screen wear while enhancing throughput.^[53]^[54]

Materials and Design

Traditional Materials

Traditional sieves were primarily constructed using natural materials sourced from local environments, with wood serving as the foundational element for frames due to its availability and workability. In 19th-century American Shaker communities, frames were crafted from bentwood rims made of ash, elm, and maple, selected for their strength, flexibility, and resistance to warping under tension. Ash provided structural rigidity, while elm offered pliability for shaping circular or oval forms, and maple contributed durability for long-term use in sifting tasks like flour or grain processing. These woods allowed for lightweight yet sturdy construction, essential for hand-held tools that required frequent manipulation. For the sieving meshes, natural fibers were woven into screens to create the filtering apertures. Horsehair, derived from animal tails, was a common choice for coarser meshes, prized for its coarse texture, strength, and elasticity, which enabled it to withstand repeated stretching without immediate breakage during sifting. Silk threads formed finer meshes in specialized applications, such as sifting medicinal powders, where their smooth, tightly woven structure allowed precise separation of impurities while maintaining a lightweight profile. Cotton gauze, with its loose open weave, was employed for delicate straining tasks, offering fineness for capturing small particles but exhibiting greater susceptibility to tearing under stress compared to horsehair. These organic materials conferred several advantages, including biodegradability and ease of crafting by hand in pre-industrial settings, where local artisans could shape frames and weave meshes without specialized machinery. However, they also presented limitations, such as vulnerability to moisture-induced rot in wooden frames and fiber degradation from insects or environmental exposure, leading to inconsistent aperture sizes over time due to natural variations in weaving and material stretch. In regions with abundant plant resources, adaptations included bamboo for frames and meshes in Asia, as seen in traditional Japanese and Chinese chaff sieves designed for rice processing, valued for bamboo's rapid renewability and natural flexibility. Similarly, in parts of Africa, such as among Xhosa communities in South Africa, reeds were woven into sieves for straining beer or sifting grains, leveraging the plant's tensile strength and availability in wetland areas. Design-wise, traditional sieves often featured simple interlaced weaves for meshes, such as plain or twill patterns in horsehair to ensure uniform openings, and mortise-and-tenon joints or steam-bent frames for secure assembly without metal fasteners.^[40]

Contemporary Materials

Contemporary sieve construction increasingly relies on engineered metals like stainless steel and brass to enhance durability, precision, and suitability for specific applications. Stainless steel, particularly grades 304 and 316L, offers superior corrosion resistance, making it ideal for food processing and pharmaceutical industries where hygiene and material integrity are paramount.^[55]^[56] These sieves are often fabricated with woven-wire mesh, ensuring precise aperture control for accurate particle separation down to micrometer scales.^[57] In contrast, brass sieves provide non-sparking properties, which are essential in laboratory environments handling flammable or explosive materials, although they are less durable than stainless steel under abrasive conditions.^[58]^[59] Synthetic materials have gained prominence for their flexibility and resistance to harsh chemicals, expanding sieve applications in diverse industrial settings. Nylon and polyester meshes deliver robust chemical resistance—nylon excelling in abrasion and alkali tolerance, while polyester withstands solvents and dilute acids—allowing use in filtration processes involving corrosive substances.^[60]^[61] Polyurethane meshes further contribute durability in high-vibration screening, such as in mining and construction, due to their elasticity and wear resistance.^[62] Complementing these, silicone frames enhance overall sieve flexibility, facilitating easier handling and adaptation in dynamic processes like vibratory sifting without compromising structural integrity.^[63] Advanced materials are pushing sieve performance boundaries, particularly in demanding environments. Tungsten carbide coatings applied to metal sieve components provide exceptional abrasion resistance, extending service life in high-wear scenarios like aggregate processing, where traditional metals would degrade rapidly.^[64] Emerging nano-meshes, fabricated from nanoporous polymers, enable precise microfiltration for applications in biotechnology and water purification, achieving sub-micron selectivity with high throughput as demonstrated in developments as of 2024.^[65]^[66] Sustainability considerations are shaping material choices, with a shift toward recyclable plastics and bio-based composites to minimize environmental footprints in sieve manufacturing. These alternatives, often derived from plant-based polymers or recycled feedstocks, maintain performance while supporting circular economy principles, as seen in broader industrial adoption of eco-friendly polymers for lab and processing equipment.^[67]

Standards and Specifications

US Standard Test Sieve Series

The US Standard Test Sieve Series, governed by ASTM E11, was officially established in 1925 by the American Society for Testing and Materials (now ASTM International) to standardize sieve specifications for particle size analysis in the United States. This standard defines over 40 designated sieve sizes, ranging from coarse apertures of 125 mm down to fine openings of 20 μm, ensuring consistent classification of materials across laboratories. It applies to woven wire test sieve cloth and the construction of test sieves used in quality control and research settings.^[68]^[7] Sieve designations in the series follow a mesh numbering system where the mesh number inversely corresponds to aperture size, representing the approximate number of openings per linear inch (25.4 mm); for instance, a No. 200 mesh sieve has openings of 75 μm. Frames are typically available in diameters of 3 inches (76 mm), 8 inches (203 mm), or 12 inches (305 mm), with full-height or half-height options to accommodate various testing volumes. These specifications promote uniformity in particle separation for materials like aggregates and powders.^[7]^[69] Construction under ASTM E11 requires woven wire cloth made from stainless steel, brass, or bronze, with uniform square apertures that adhere to strict tolerances for average opening size and wire diameter, ensuring no burrs, kinks, or irregularities that could affect accuracy. Sieves must be mounted in rigid, non-deformable frames to prevent distortion during use. Certification involves calibration grades—compliance, inspection, or calibration—verified through measurement of apertures and wires, often using NIST-traceable glass beads or microspheres to confirm conformance at confidence levels up to 99.73%.^[7]^[70]^[71] Primarily used in the United States for applications such as soil testing, aggregate grading, and powder characterization in industries like construction and pharmaceuticals, the standard has seen updates through 2024, including refinements to tolerances for finer meshes below 125 μm to enhance precision in modern analytical needs. The ASTM E11-24 revision maintains compatibility with evolving laboratory practices while preserving core specifications.^[7]^[72]

International and Calibration Standards

The ISO 3310 series provides the primary international framework for test sieves, with ISO 3310-1 (2016) specifying technical requirements and testing methods for metal wire cloth sieves, and ISO 3310-2 addressing perforated metal plate sieves with round or square apertures. These standards cover aperture sizes from 125 mm down to 20 μm, ensuring consistent performance in particle sizing through defined tolerances on apertures and material properties; for example, average aperture tolerances for sizes greater than 100 μm are typically ±3%, with maximum single aperture deviations up to +5% to account for manufacturing variations.^[73]^[6] Beyond the ISO norms, regional standards like the Tyler series offer metric-adapted equivalents to traditional sieve progressions, promoting compatibility in global testing while maintaining geometric ratios for aperture sizes. The British Standard BS 410 outlines specifications for wire cloth and perforated sieves in the UK, emphasizing aperture accuracy and frame construction, whereas the German DIN 4188 (withdrawn 1992, superseded by ISO 3310-1) detailed dimensions for wire screens used in test sieves.^[74]^[75]^[76] Calibration procedures for compliance with these standards involve rigorous verification techniques, including microscopic inspection to measure individual apertures and wire diameters along predefined lines, electrical zone sensing for high-precision dimensional analysis, and automated image analysis systems for comprehensive sieve mapping. Laboratories generally conduct full calibrations annually, or more frequently for high-use environments, to verify adherence to tolerance limits and maintain traceability to primary standards.^[77]^[78]^[79] These standards play a vital role in international trade by guaranteeing sieve interoperability, which is essential for consistent quality control in exported materials like aggregates and powders.^[80]

Applications

Culinary and Household Uses

In culinary applications, sieves are essential for preparing ingredients by separating solids from liquids or aerating dry goods. Sifting flour through a fine-mesh sieve aerates it, removing lumps and incorporating air to produce lighter batters and doughs for baked items like cakes and cookies.^[81]^[82] Strainers, a type of sieve, are commonly used to drain pasta after boiling, allowing water to pass through while retaining the noodles, or to separate tea leaves from steeped liquid in loose-leaf preparations.^[83]^[81] Fine-mesh sieves also facilitate dusting powdered sugar or cocoa over desserts for even coverage, and they can sift spices to ensure uniform particle size in rubs or sauces.^[83]^[84] Beyond the kitchen, sieves serve practical household functions in cleaning and maintenance tasks. They are used to strain old paint, filtering out clumps and debris to restore smoothness before reuse, often with a mesh screen fitted over a bucket.^[85] In gardening, sieves filter garden soil by sifting out rocks, roots, and debris, creating fine, usable earth for planting or potting mixes.^[86] For personal care, fine sieves separate jewelry from cleaning solutions or debris, such as rinsing small pieces like rings or chains while capturing dirt particles.^[87] Common tool variations include colanders, which function as large-holed sieves for draining voluminous items like pasta or vegetables, and tea strainers, compact mini-sieves designed for individual infusions.^[88] For food safety, sieves made from non-reactive materials like stainless steel or nylon are recommended to avoid chemical interactions with acidic ingredients, preventing off-flavors or contamination.^[82] In specific cultural recipes, sieves play a key role in traditional preparations. For baking sourdough bread, sifting flour aerates it and removes bran for a finer texture, contributing to the loaf's open crumb structure, though it's optional in rustic styles.^[89] In making ricotta cheese, a cheesecloth-lined sieve drains curds from whey after heating milk, yielding creamy results essential for Italian dishes like lasagna or cannoli.^[90]

Industrial and Scientific Applications

In industrial settings, sieves are essential for particle size analysis during cement production, where they help classify raw materials and clinkers to ensure uniform quality and optimize grinding efficiency. ^[91] Similarly, in powder coating processes, sieves remove oversized particles and contaminants to achieve consistent film thickness and adhesion, with high-energy vibratory sieves enabling precise control over particle sizes typically between 12 and 80 microns. ^[92] For wastewater treatment, rotating belt sieves and vibratory screens separate solids from liquids in primary treatment stages, capturing particles as small as 0.35 mm to reduce organic load and facilitate resource recovery like cellulose. ^[93] In pharmaceuticals, multi-stage sieving employs stacked meshes of varying apertures to fractionate powders, controlling particle distribution for drug formulation stability and bioavailability, often achieving separations down to 10 microns. ^[94] Scientifically, sieves perform lab granulometry in soil and geology by stacking calibrated meshes to determine grain size distribution, aiding in classification of sediments for geotechnical assessments and environmental studies. ^[95] In microbiology, membrane sieves with pore sizes of 0.2 to 0.45 microns filter out bacteria and larger microbes from samples, enabling sterile culturing and pathogen detection through size-exclusion mechanisms. ^[96] For nanotechnology, nano-sieves fabricated with precise pores around 15 nanometers capture and release bioparticles or nanoparticles, supporting applications in drug delivery and material synthesis by enabling selective separation based on size. ^[97] Specialized uses include grading explosive materials in mining, where sieve analysis ensures uniform particle distribution in dust samples to assess explosibility risks and optimize blast fragmentation, with gradation curves guiding safe handling. ^[98] In chemistry, catalyst sieving refines particle beds to specific size ranges like 63-106 microns, enhancing reaction selectivity and bed porosity for processes such as CO conversion. ^[99] Efficiency in these applications is quantified by throughput rates, with industrial vibratory sieves processing 40 to 4500 kg/h depending on mesh size and material, balancing capacity with separation accuracy. ^[100] Recent advancements integrate artificial intelligence with sieve systems for real-time particle size analysis, using machine vision to monitor distributions in heavy industry and soil testing, improving predictive maintenance and process optimization by 2025. ^[101] These AI-enhanced setups comply with standards like ASTM for lab applications, enabling automated adjustments to sieving parameters. ^[102]

Cultural and Symbolic Aspects

In Folklore and Art

In European folklore, sieves have long been associated with divination practices known as coscinomancy, where a sieve suspended on shears or scissors would pivot to answer yes-or-no questions, often to identify thieves or locate lost items. This method, documented from ancient Greece through the medieval and early modern periods, symbolized the separation of truth from falsehood, with the sieve's motion interpreted as supernatural guidance.^[103] In Japanese yokai legends, sieves appear as protective tools against certain spirits; the one-eyed mikari baba, a hag-like demon who steals eyes from sleeping children, flees from objects with many holes, such as bamboo sieves, which disrupt her ethereal form and trap her gaze. These tales, rooted in Edo-period folklore, portray the sieve as a mundane household item transformed into a ward against supernatural intrusion.^[104] Brazilian folklore, influenced by African traditions brought during the transatlantic slave trade, features the saci-pererê, a one-legged trickster spirit who can be captured by throwing a sieve into a whirlwind where he hides, restraining his mischievous whirlwinds and allowing humans to extract favors or punish him. This motif underscores the sieve's role in containing chaos and enforcing order in narratives blending Indigenous, African, and European elements.^[105] Sieves hold symbolic significance in Hindu rituals, particularly during Karwa Chauth, where married women view the moon through a sieve (chani) to break their fast, the mesh filtering moonlight to represent the removal of impurities and negativity from marital life, ensuring prosperity and purity in the union. This practice evokes themes of separation and refinement, aligning the sieve with spiritual cleansing in devotional observances.^[106] In Renaissance art, the sieve emerged as a potent emblem of chastity, most notably in portraits of Queen Elizabeth I, such as Quentin Metsys the Younger's 1583 Sieve Portrait, where she holds a gold sieve inspired by the Roman Vestal Virgin Tuccia's miracle of carrying Tiber water without spilling, asserting her virgin sovereignty and filtering out unworthy suitors. These works transformed the domestic tool into a political allegory of unbreached integrity.^[107] Contemporary artists have repurposed sieves to explore themes of perception and information overload; Spanish sculptor Isaac Cordal's 2012 installation Cement Bleak in London featured colanders (kitchen sieves) mounted under streetlights, casting distorted shadowy faces on pavements to symbolize how urban environments filter and fragment human identity in the digital age. Such pieces critique the selective nature of modern communication, using the sieve's perforations to evoke distorted realities.^[108]

Idioms and Metaphors

The idiom "have a memory like a sieve" describes a person who is extremely forgetful, likening the mind to a sieve through which information slips away like fine particles. This expression originated in early 19th-century English literature, appearing in an anonymous poem that compared human memory to a leaky container unable to retain contents.^[109]^[110] Another related phrase, "sift the truth," refers to the careful examination of information to separate facts from falsehoods or irrelevancies, drawing from the sieving process of isolating valuable elements. The verb "sift" in this metaphorical sense traces back to Old English siftan, meaning to pass through a sieve, and by the 16th century, it had evolved in English to denote scrutinizing evidence for discernment.^[111]^[112] Proverbs across cultures employ the sieve to convey themes of selectivity and futility. In Italian folklore, "An ass's tail will not make a sieve" illustrates the impossibility of achieving a refined outcome from crude materials, emphasizing inherent limitations.^[113] Similarly, the Spanish proverb "A boy's love is water in a sieve" portrays youthful affection as fleeting and impossible to contain, like liquid draining through holes.^[113] In literature, the sieve appears as a symbol of impossibility or supernatural defiance. William Shakespeare references it in Macbeth (Act 1, Scene 3), where witches boast of sailing "in a sieve" to distant shores, alluding to folklore beliefs that such vessels allowed witches to traverse stormy seas without sinking, representing defiance of natural laws.^[114] Metaphorically, the sieve extends to psychology as a model for information processing, where the mind filters relevant stimuli while discarding the extraneous, akin to cognitive selective attention mechanisms.^[115] In politics, it critiques inefficient systems, such as tax policies described as a "sieve" that allows wealth to escape through loopholes, as economist Henry Calvert Simons noted in 1938 regarding progressive taxation's challenges.^[116] In contemporary contexts, particularly by the mid-2020s, "data sieve" has emerged in computing to metaphorize algorithms that filter vast datasets, removing noise or side effects to isolate useful outputs, as seen in software frameworks like Sieve for parallel processing.^[117]^[118]

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Sieving methods of sieve analysis - RETSCH
Dry sieving; Wet sieving. Vibratory sieving. The sample is thrown upwards by the vibrations of the sieve bottom and falls back down due to gravitation forces.Missing: physics | Show results with:physics
[17]
Sieving - an overview | ScienceDirect Topics
Sieving is defined as a process within vibrated granular mixtures where energy input creates dynamic voids that allow smaller granules to percolate while ...
[18]
https://www.sigmaaldrich.com/US/en/support/calculators-and-apps/particle-size-conversion-table
[19]
https://www.retsch.com/files/5866/the-basic-principles-of-sieve-analysis.pdf
[20]
[PDF] The Basic Principles of Sieve Analysis - Retsch
The use of a single sieve, frequently also known as sieve cut, is only used to determine the percentage of undersize and oversize particles. Particle size ...
[21]
[PDF] Test Sieving: Principles and Procedures | ENVCO Global
3) Reduce the sample to a size suitable for the sieve analysis procedure. 4) Perform the actual sieve analysis procedure. 5) Compute the data and convert the ...<|control11|><|separator|>
[22]
Some factors affecting sieving performance and efficiency
Jul 25, 2009 · This study has demonstrated how such factors as flour type and moisture, milling method, tapping, sieving method, duration, and their interactions can affect ...
[23]
Different Sieving Methods for Varying Applications - AZoM
Aug 11, 2017 · Sieving methods include dry, wet, air jet, and vibrational sieving. Dry sieving is for 40 microns to 125 mm, air jet extends to 10 microns, and ...
[24]
A case study of an ultrasonic sieve machine - ScienceDirect
This paper proposes a solution based on anomaly detection and continual learning to address these two problems. Experiments on an ultrasonic vibrating sieve ...
[25]
Sieve - New Kingdom, Ramesside - The Metropolitan Museum of Art
Date: ca. 1295–1070 B.C.; Geography: From Egypt, Memphite Region, Lisht North, Cemetery, MMA excavations; Medium: Reed, rush ...
[26]
(PDF) Mesopotamian Ancient Basket Weaving Technology and the ...
Oct 8, 2021 · Neolithic technology, especially technology involving the use of reeds and weaving, was highly advanced long before the beginning of ...Missing: hair | Show results with:hair
[27]
A Taste of the Ancient World: Farming at Karanis - Index of /
Made of palm leaves and sticks, this sieve (in Latin, cribrum) was an everyday element in grain processing. Used for the final sifting of wheat before grinding, ...
[28]
Selective attachment processes in ancient gold ore beneficiation
All of these ancient processes operate on the principle of selectively attaching finely dispersed gold particles onto a solid collector material.Missing: cultures | Show results with:cultures
[29]
Threshing, Winnowing, Sieving: Separating the Good from the Bad
Mar 21, 2014 · Winnowing was the process that separated the mixed up pile of grain, stalk, and husk so that the edible grain could be sifted and eaten. To ...
[30]
Watermills: A Key Technology of Medieval Europe
Jan 8, 2023 · Wheat could be added to the mill through an opening in the top stone, and the resulting meal was sifted through sieves to obtain flour.
[31]
Evolutions in Wire Cloth Manufacturing: Then and Now
Production of wire cloth on weaving machines became possible in 1798, and a whole new world of opportunities suddenly opened up.Missing: powered | Show results with:powered
[32]
The History of Wire Weaving and Wire Working - Locker Group Ltd
May 21, 2018 · The earliest evidence of the development of wire weaviing on looms for industrial purposes appears to be in the early part of the 18th Century.
[33]
Test Sieves - W.S. Tyler
W.S. Tyler developed the basis for the first Test Sieve standard over 100 years ago. Since then, we have developed a vast range of test sieve specifications, ...
[34]
The Evolution of Industrial Vibrators: From Pneumatics to Electric ...
Dec 19, 2016 · The Ultimate Powder Sieving ... The Evolution of Industrial Vibrators: From Pneumatics to Electric Powered Vibrators in the 20th Century.Missing: advancements technology
[35]
Vibratory Sieve Shaker AS 200 control - Retsch
All sieve shakers of the series AS 200 work with an electromagnetic drive that is patented by RETSCH (EP 0642844). This drive produces a 3D throwing motion that ...
[36]
A Guide to Test Sieve Construction | Newark Wire Cloth
Laser Etching. The final step is the use of laser etching. This etching is used on all types of sieves to engrave the serial number to the exterior of ...
[37]
Disposable Sieve(729) - Alibaba
Potential environmental concerns due to non-biodegradability. Paper sieves: Eco-friendly and compostable (if uncoated); Suitable for low-moisture applications ...
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https://www.archivemarketresearch.com/reports/laboratory-sieves-186605
[39]
Molecular Sieve Catalyst And Additives Market Size, Share, Industry ...
The Global Molecular Sieve Catalyst and Additives Market is projected to grow at a CAGR of 3.7% from 2025 to 2035, driven by increasing demand for efficient ...
[40]
Global Vibro Sifter Sieve Market Impact of Environmental, Social ...
Jul 26, 2025 · Environmental sustainability in Vibro Sifter Sieve s is gaining traction, with manufacturers focusing on low-power consumption, reduced e-waste, ...
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https://www.museum.ie/en-IE/Collections-Research/Folklife-Collections/Folklife-Collections-List-%281%29/Agriculture/Online-Exhibition-Making-a-Wooden-Sieve/Making-a-wooden-sieve
[42]
Making a wooden sieve | National Museum of Ireland
Each sieve is assembled with four separate components made from ash wood: the rim, the anchoring band, the briar band, and the lacing strips.<|separator|>
[43]
How to make a sieve and riddle | Work & careers | The Guardian
Nov 27, 2009 · Hundreds of firms once made these beechwood and wire meshes – now, only one craftsman remains, discovers Jon Henley.
[44]
Bringing in The Sieves - The Washington Post
Nov 4, 1979 · The oldest style is the drum sieve. Originally made of wood in a classic drum shape and often called a tamis, it is used primarily to sift flour ...
[45]
Acceptable Moisture Levels in Wood: A Comprehensive Guide
Prevent wood warping & cracking. Learn acceptable moisture levels for wood in woodworking, flooring, & construction. Get tips for measurement & control.Missing: maintenance | Show results with:maintenance
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Vibratory separators | Efficient vibrating separator equipment
High-performance circular vibratory separators for accurate grading of wet and dry materials up to five fractions.
[47]
Rotary Vibrating Sieve Manufacturer & Supplier - Hywell Machinery
A rotary vibrating sieve uses a motor and eccentric weights to screen, sort, and dedust particles, with a 360-degree rotating outlet. It can screen down to 500 ...
[48]
Types of Vibrating Sieve Motors-DAHAN Vibration Machinery Co., Ltd.
The horizontal Vibrating sieve motor is equipped with a set of adjustable eccentric blocks at both ends of the rotor shaft, and the excitation force is obtained ...Missing: rotary gyratory components<|control11|><|separator|>
[49]
Multi-Deck Gyratory Screener - High Capacity Screener Machine
Our multi-deck gyratory screener is a stacked configuration, offering BM&M's highest capacity screener in the most compact footprint possible.Missing: sieves hour
[50]
Multi-deck screening machine - SIEBTECHNIK TEMA
Depending on the application, throughput rates of 50 kg/h to 50 t/h are possible with separating cuts of 32 μm to 8 mm.Missing: industrial hour
[51]
Vibrating sieves - recycling - SOLLAU | Magnetic separation
In the recycling industry, they are used to separate fractions of plastics, glass, metals, or wood, to clean process liquids, and to ensure closed water ...
[52]
Vibrating Sieves - Knauer Engineering
The frequency inverter in the power supply of the vibrating sieve controls the vibrating freqeuncy infinitely at front by a potentiometer. The indicated ...Missing: variable | Show results with:variable
[53]
Industrial Sieves for Powder - Precision & Efficiency - Alibaba
4.3 332 Shop high-quality industrial sieves for powder from reliable suppliers. Find durable, efficient, and cost-effective solutions for your industrial needs.
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Stainless Steel Pharmaceutical Sieves
Pharmaceutical sieves are made with stainless steel 316L woven wire mesh as filter media. The frame is made of stainless steel 316L plate, polished bright.
[55]
Stainless Steel Test Sieves - Newark Wire Cloth
Our company provides 'superior' quality Test Sieves; featuring our exclusive 'Cleaner-by-Design' construction, trademarked as our SuperlaSieveTM technology.
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Woven Wire Mesh Sieves - ø 200 mm / 203 mm - Retsch
The individual laser engraving of each RETSCH test sieve provides a clear and accurate labeling with full traceability. The mesh sieves can be easily combined ...Missing: etched | Show results with:etched
[57]
Brass vs. Stainless Steel Test Sieves: Understanding the Differences
Aug 31, 2021 · Stainless steel test sieves are more durable than the softer brass material. Stainless steel mesh is more corrosion resistant and stands up better to abrasive ...
[58]
The Ultimate Test Sieve Guide You Wish You Had - W.S. Tyler
Typically, 3-inch, 8-inch, and 12-inch are the standard sizes for sieves and are relatively inexpensive compared to "specialty" sieves. To that end, sieve ...Missing: traditional held
[59]
Nylon & Polyester Mesh Screen Filters - MMI Textiles
Nylon and polyester mesh filters offer strength, flexibility, and chemical resistance—ideal for air, liquid, and medical filtration across industries.Missing: polyurethane | Show results with:polyurethane
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what is main completely different between polyester mesh,nylon ...
Mesh polyester has advantage of solvent resistance, hot temperature resistance, water resistance, chemical resistance. · Nylon screen mesh: · Stainless steel ...Missing: polyurethane | Show results with:polyurethane
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Sieve Mesh Polyurethane - Durable & Efficient Solutions - Alibaba.com
4.3 332 Find high-quality sieve mesh polyurethane for vibrating screens in coal washing, mining, and construction. Durable and efficient solutions for your needs.
[62]
Silicone Molding Sieves For Vibro Sifter - Naman Polymer
Manufactured from premium-grade silicone, these sieves offer exceptional flexibility, wear resistance, and durability, ensuring long-lasting performance in ...Missing: frames | Show results with:frames
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Tungsten Carbide Coatings for Wear Resistance - Metco - Oerlikon
Conversely, a lower percentage of matrix offers greater hardness, resulting in better abrasion and wear resistance. Tungsten titanium carbide (WTiC) can be ...Missing: sieves | Show results with:sieves
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Ultrafast ion sieving using nanoporous polymeric membranes - PMC
Feb 8, 2018 · Here we report on nanoporous polymer membranes with an excellent balance between selectivity and permeability of ions. Our membranes are ...
[65]
Nano-sieve efficiently captures and releases tiny bioparticles
Dec 2, 2022 · Nanaware et al. developed a nano-sieve capable of efficiently capturing and retrieving nanoparticles with a size of only 15 nanometers.
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Making Plastic Parts More Sustainable | Avient
Mar 24, 2023 · Sustainable polymers are typically processed with bio-based or recycled materials. These materials can help companies hit their sustainability ...
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[PDF] the development of standard sieve specifications in the United States
conform to the specifications. Specifications for No. 100 and No. 200 sieves used in- cement testing, adopted in 1904-, were the first American sieve.
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ASTM E11 Standard Sieve Designations Calculator - W.S Tyler Blog
Jan 13, 2022 · It was designed to calculate the ASTM E11 designations as well as the nominal sieve cloth openings, Y variation based on average opening, maximum x opening ...
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A Guide to ASTM E11 Standards - Newark Wire Cloth
ASTM E11020 Sieve Sizes ... As of June 2018, the active standard specification for Woven Wire Test Sieve Cloth and Test Sieves is embodied in ASTM E11-20.
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https://newarkwire.com/a-guide-to-astm-e11-standards/
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Particle Size Analysis Using ASTM Mesh Test Sieves - Humboldt
Jan 6, 2025 · 12-inch sieves often come in both standard and "half-height" frames, while 18-inch sieves tend to have depths of around 4.5 inches. These depth ...
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ISO 3310-1:2016 - Test sieves of metal wire cloth
In stock 2–5 day deliveryIt applies to test sieves having aperture sizes from 125 mm down to 20 µm, in accordance with ISO 565.Missing: perforated tolerances
[73]
Particle Size - US Sieve Series and Tyler Mesh Size Equivalents
May 15, 2002 · Sieves and screens are usually used for larger particle-sized materials, i.e., greater than approximately 50µm (0.050mm). Industrial Sieve Types ...<|control11|><|separator|>
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BS 410-1:2000 - BSI Knowledge
30-day returnsOct 15, 2000 · BS 410-1:2000: The Standard for Test sieves. Technical requirements and testing - Test sieves of metal wire cloth.
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DIN 4188-1 - 1977-10
In stockDIN 4188-1:1977-10 Screening surfaces; wire screens for test sieves, dimensions. Buy Subscribe from 25.30 EUR VAT included from 23.64 EUR VAT excluded.
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https://www.dinmedia.de/en/standard/din-4188-1/1870953
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Test sieves for reliable sieve analysis - RETSCH
Test sieves for accurate sieve analysis with highest precision for reliable results ✓ different sizes ✓ high stability ✓ ISO approved ➤ Learn more.
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Sieve Calibration - microspheres - sieves - CSC Scientific
These Calibration Standards will enable you to calibrate your test sieves to an accuracy of approximately 1μm (micron).Missing: zone sensing
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Sieve-Testing Standards, Certification, and Calibration
The method specified by ASTM is to optically inspect a sample of the openings, measure the apertures and the wire, and compare the results with the ASTM E11 ...
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7 Great Uses for a Fine-Mesh Strainer (Besides Straining)
Fine mesh strainers are good for a whole lot more than rinsing vegetables, draining pasta, or straining the solids from stocks and broths.
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Is There a Difference Between a Sieve and a Strainer?
Sep 28, 2021 · A sieve separates dry ingredients, while a strainer separates particles from liquids. A strainer with a coarser mesh can function as a sieve.Missing: pasta | Show results with:pasta
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The 18 Best Uses For Fine Mesh Strainers - Tasting Table
Feb 5, 2023 · A fine mesh strainer will be your best friend in the kitchen. You can drain cans of beans, lentils, vegetables, and even fruit with its help.
[83]
Unsung heroes of the kitchen: Reduce strain and improve culinary ...
Jun 15, 2024 · Sieves make cooking easier and efficient, ensuring smooth food, lighter baked goods, and separating ingredients for smooth textures.
[84]
Homemade Paint Strainer - Fine Homebuilding
Jun 7, 2011 · All you need is an old drywall bucket and a scrap of window screen to save valuable leftover paint without the danger of it mucking up your walls.
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How to Make a Dirt Sifter : 3 Steps (with Pictures) - Instructables
Using the sifter is very straightforward. You fill it with as much material as you can comfortably shake. Push and pull the tray in front of you and the sifted ...<|separator|>
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Filing Sieve for Jewelers - Stainless Steel, Precision Mesh
Free delivery 30-day returnsJewelry Cleaning and Care ... The fine mesh design keeps your workspace clean and organized by separating debris, filings, and small particles with precision.
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https://www.jewelerstoystore.com/filings-sieve-p/s228.htm
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Do I really need to sift flour? - King Arthur Baking
Jun 24, 2024 · Siffing is not always needed, but it can aerate flour, improve light textures, and help with accurate measuring, especially for older flour.
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Homemade Ricotta Cheese Recipe (Only 2 Ingredients!) - The Kitchn
Rating 5.0 (97) Mar 14, 2025 · Fit a strainer over a large bowl and line the strainer with a double layer of cheesecloth. Scoop the big curds out of the pot with a slotted ...
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10 Applications for Particle Size Analysis - ATA Scientific
Aug 12, 2019 · Particle size analysis is used in products and industies that you might be surprised to hear, including cosmetics and cement manufacturing.
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Powder Coating Sieves: What are The Pro's and Con's? Here's What ...
Precise Particle Size Control: Powder coatings demand uniform particle sizes to produce consistent finishes. With the Hi-Sifter, Elcan is able to screen ...
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Chapter 1 Primary treatment: Particle separation by rotating belt sieves
Fine mesh rotating belt sieves (RBSs) offer a compact solution for removal of particles in primary treatment of wastewater. This chapter shows examples from lab ...
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Test sieve for pharmaceutical powder-Dahan Machinery
May 13, 2025 · The test sieve can effectively remove oversized or undersized particles, ensure the uniformity and stability of pharmaceutical powder, and is ...Missing: sifters | Show results with:sifters
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Sieve Analysis – Properties and Behavior of Soil – Online Lab Manual
Sieve analysis is a method that is used to determine the grain size distribution of soils that are greater than 0.075 mm in diameter.
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MEMBRANE FILTRATION TECHNIQUE - Microbiology Class
May 20, 2023 · Membrane filters are microporous plastic films with specific pore size ratings. They are also known as screen, sieve or microporous filters; and ...
[96]
Particle Sieve Analysis - Prime Process Safety Center
Particle sieve analysis is a technique used to determine the distribution of particle sizes in a granular material.
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An in-depth analysis of catalytic particle beds produced by sieving
This paper evaluates the impact of sieving on the resulting particles and overall structural morphology of catalytic beds.
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Vibrating Sieve Capacity in the Tile and Ceramic Industry
Apr 19, 2025 · Generally, vibrating sieves can process from 40 kg/h up to 4500 kg/h. Capacity is influenced by factors such as: Sieve diameter; Type of ...
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Automated Particle Size Analysis in Heavy Industry - Ripik AI
Automated particle size analysis is revolutionizing heavy industries by replacing outdated manual methods with AI-driven, real-time solutions.
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Transforming Soil Lab Testing with AI Technology - Fugro
Aug 28, 2025 · Emerging technologies such as artificial intelligence (AI), automation, and real-time data analysis are at the forefront of this evolution.
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Sieve and shears - Oxford Reference
A well-known form of divination, akin to the Bible and key method, normally used to name a thief or find something which has been lost.
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https://www.fugro.com/news/long-reads/2025/transforming-soil-lab-testing-with-ai-technology
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https://www.oxfordreference.com/display/10.1093/oi/authority.20110803100505125
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Karwa Chauth 2025: Why The Sieve (Chani) Is Essential On This ...
Oct 3, 2025 · The kitchen sieve plays a central role in rituals, symbolizing purity, protection, and filtering out negativity.
[105]
Elizabeth I's favourite kitchen utensil - Apollo Magazine
Jun 7, 2025 · The best of Elizabeth's sieve portraits is the one in the national art museum in Siena by the Flemish artist Quentin Metsys the Younger in 1583.
[106]
isaac cordal casts shadows with strainer faces - Designboom
May 22, 2012 · The urban public art installation employs the illumination from street lamps casting shadows upon manipulated metal cooking strainers.Missing: sieve | Show results with:sieve
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'a memory like a sieve': meanings and origin - word histories
May 12, 2021 · My understanding is darkened with error; my judgment is perverted with partiality; my will is diverted with sensuality; my memory like a sieve, ...
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Have a Memory Like a Sieve - Idioms Online
He has a memory like a sieve.” Origin. The memory has been compared to a sieve since at least the early 1800's. An anonymous but quite well-known poem from the ...
[109]
Sift - Etymology, Origin & Meaning
Originating from Old English siftan and Proto-Germanic *sib-, "sift" means to pass or scatter finer parts through a sieve, reflecting its Middle English ...Missing: truth | Show results with:truth
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sift - Wiktionary, the free dictionary
Etymology. From Middle English syften, from Old English siftan, from Proto-West Germanic *siftijan. Pronunciation. IPA: /sɪft/. Audio (US): Duration: 2 ...Missing: idiom | Show results with:idiom
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Proverbs about Sieve - Special Dictionary
16 Proverbs about Sieve · 1. You cannot make a sieve of an ass's tail.. · 2. An ass's tail will not make a sieve.. · 3. A boy's love is water in a sieve.. · 4.Missing: involving | Show results with:involving
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Macbeth Glossary - But in a sieve I'll thither sail 1.3
Mar 1, 2010 · Using their brooms as oars, witches would set sail in sieves and journey over rough waters.
[113]
Mind like a sieve | Psychological Psayings - WordPress.com
Nov 21, 2012 · You've got a 'mind like a sieve' is a common way of telling someone that things just fall through their heads and that they can't remember ...
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[PDF] Political Economy in the Explanation of Tax Systems and Tax Reform
great incomes with a sieve."2 Simons's metaphor of a "sieve" remains highly descriptive of modern tax systems, which continue to embody a myriad of special ...
[115]
What is Sieve? - Codeplay Software Ltd
The Sieve concept is called “sieve” because it sieves out the side effects from your software and then lets you apply them later.Missing: metaphor | Show results with:metaphor
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The anthropology of an equation : Sieves, spam filters, agentive ...
This article undertakes the anthropology of an equation that constitutes the essence of an algorithm that underlies a variety of computational technologies.