|
Sieve (other)
A sieve is a tool to separate materials of one characteristic (for example, liquids) from materials of another (for example, solids). Sieve may also refer to: Places * Sieve River in Italy Computing * Sieve (mail filtering language), a standard for specifying email filters * Sieve C++ Parallel Programming System, a compiler for C++ Mathematics * Sieve (category theory) * Cyclic sieving, a phenomenon in combinatorics * Sieve estimator (statistics and econometrics) * Sieve theory, a technique for counting or filtering sets of numbers ** General number field sieve ** Large sieve ** Quadratic sieve ** Sieve of Atkin ** Sieve of Eratosthenes ** Sieve of Sundaram ** Sieve of Pritchard Science and healthcare * Sieve, in medicine, a "surgical sieve" refers to a very general list of diagnostic or pathological headings, against which any finding can be compared * Sieving coefficient, used in transport phenomena, in chemistry * Sieve tube element, an elongated cell in the phloem tiss ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sieve
A sieve, fine mesh strainer, or sift, is a device for separating wanted elements from unwanted material or for controlling the particle size distribution of a sample, using a screen such as a woven mesh or net or perforated sheet material. The word ''sift'' derives from ''sieve''. In cooking, a sifter is used to separate and break up clumps in dry ingredients such as flour, as well as to aerate and combine them. A strainer (see Colander), meanwhile, is a form of sieve used to separate suspended solids from a liquid by filtration. Industrial strainer Some industrial strainers available are simplex basket strainers, duplex basket strainers, T-strainers and Y-strainers. Simple basket strainers are used to protect valuable or sensitive equipment in systems that are meant to be shut down temporarily. Some commonly used strainers are bell mouth strainers, foot valve strainers, basket strainers. Most processing industries (mainly pharmaceutical, coatings and liquid food indu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sieve Of Sundaram
In mathematics, the sieve of Sundaram is a variant of the sieve of Eratosthenes, a simple deterministic algorithm for finding all the prime numbers up to a specified integer. It was discovered by Indian student S. P. Sundaram in 1934. Algorithm Start with a list of the integers from 1 to ''n''. From this list, remove all numbers of the form where: *i,j\in\mathbb,\ 1 \le i \le j *i + j + 2ij \le n The remaining numbers are doubled and incremented by one, giving a list of the odd prime numbers (i.e., all primes except 2) below . The sieve of Sundaram sieves out the composite numbers just as the sieve of Eratosthenes does, but even numbers are not considered; the work of "crossing out" the multiples of 2 is done by the final double-and-increment step. Whenever Eratosthenes' method would cross out ''k'' different multiples of a prime , Sundaram's method crosses out for 1\le j\le \lfloor k/2\rfloor. Correctness If we start with integers from to , the final list contains only o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Goaltender
In ice hockey, the goaltender (commonly referred to as the goalie) is the player responsible for preventing the hockey puck from entering their team's net, thus preventing the opposing team from scoring. The goaltender mostly plays in or near the area in front of the net called the ''Ice hockey rink#Crease, goal crease'' (often referred to simply as '' the crease''). Goaltenders tend to stay at or beyond the top of the crease to cut down on the angle of shots. In the modern age of goaltending there are two common styles, butterfly and hybrid (hybrid is a mix of the traditional stand-up style and butterfly technique). Because of the power of shots, the goaltender wears special equipment to protect the body from direct impact. Goaltenders are one of the most important players on the ice, as their performance may greatly impact the outcome or score of the game. One-on-one situations, such as breakaways and shootouts, have the tendency to showcase a goaltender's pure skill, or lack ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Whitewater
Whitewater forms in a rapid context, in particular, when a river's gradient changes enough to generate so much turbulence that air is trapped within the water. This forms an unstable current that froths, making the water appear opaque and white. The term "whitewater" also has a broader meaning, applying to any river or creek that has a significant number of rapids. The term is also used as an adjective describing boating on such rivers, such as whitewater canoeing or whitewater kayaking. Fast rivers Four factors, separately or in combination, can create rapids: gradient, constriction, obstruction, and flow rate. Gradient, constriction, and obstruction are streambed topography factors and are relatively consistent. Flow rate is dependent upon both seasonal variation in precipitation and snowmelt and upon release rates of upstream dams. Streambed topography Streambed topography is the primary factor in creating rapids, and is generally consistent over time. Increased f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sieve (hieroglyph)
The total number of distinct Egyptian hieroglyphs increased over time from several hundred in the Middle Kingdom to several thousand during the Ptolemaic Kingdom. In 1928/1929 Alan Gardiner published an overview of hieroglyphs, Gardiner's sign list, the basic modern standard. It describes 763 signs in 26 categories (A–Z, roughly). Georg Möller compiled more extensive lists, organized by historical epoch (published posthumously in 1927 and 1936). In Unicode, the block ''Egyptian Hieroglyphs'' (2009) includes 1071 signs, organization based on Gardiner's list. As of 2016, there is a proposal by Michael Everson to extend the Unicode standard to comprise Möller's list. Subsets Notable subsets of hieroglyphs: * Determinatives * Uniliteral signs * Biliteral signs * Triliteral signs * Egyptian numerals Letter classification by Gardiner List of hieroglyphs In Unicode Unicode character names follow Gardiner's sign list (padded with zeroes to three digits, i.e. Gardin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stainless Steel Strainer
A sieve, fine mesh strainer, or sift, is a device for separating wanted elements from unwanted material or for controlling the particle size distribution of a sample, using a screen such as a woven mesh or net or perforated sheet material. The word ''sift'' derives from ''sieve''. In cooking, a sifter is used to separate and break up clumps in dry ingredients such as flour, as well as to aerate and combine them. A strainer (see Colander), meanwhile, is a form of sieve used to separate suspended solids from a liquid by filtration. Industrial strainer Some industrial strainers available are simplex basket strainers, duplex basket strainers, T-strainers and Y-strainers. Simple basket strainers are used to protect valuable or sensitive equipment in systems that are meant to be shut down temporarily. Some commonly used strainers are bell mouth strainers, foot valve strainers, basket strainers. Most processing industries (mainly pharmaceutical, coatings and liquid food indust ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Riddle (tool)
A riddle is a large sieve used to separate soil or compost particles, or for separating soil from vegetables. Etymology English "riddle" is from Middle English ''ridelle'' "coarse sieve," from late Old English ''hriddel'' "sieve," altered by dissimilation from Old English ''hridder'' "sieve" Description A riddle may be square, rectangular or circular in shape, with a rim made from wood, metal, plastic or beechwood, holding in place a steel wire mesh that may either be handwoven or machine-made. A typical circular riddle is approximately in diameter and the mesh may have a spacing of something like , , , , or . A riddle is typically used to improve soil quality by allowing the gardener to sieve through soil and remove stones, twigs, large lumps of clay etc. and hence provide a finer tilth. Smaller riddles can be used to separate soil very finely for seeds and early potting. Riddles may also be used to help remove soil from harvested vegetables. See also *Garden tool *Riddle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glossary Of Firefighting Equipment
This is a glossary of firefighting equipment. A B C D E F G H I J K L M N O P Q R S T U V W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sieve Tube Element
Sieve elements are specialized cells that are important for the function of phloem, which is a highly organized tissue that transports organic compounds made during photosynthesis. Sieve elements are the major conducting cells in phloem. Conducting cells aid in transport of molecules especially for long-distance signaling. In plant anatomy, there are two main types of sieve elements. Companion cells and sieve cells originate from meristems, which are tissues that actively divide throughout a plant's lifetime. They are similar to the development of xylem, a water conducting tissue in plants whose main function is also transportation in the plant vascular system. Sieve elements' major function includes transporting sugars over long distance through plants by acting as a channel. Sieve elements elongate cells containing sieve areas on their walls. Pores on sieve areas allow for cytoplasmic connections to neighboring cells, which allows for the movement of photosynthetic material and ot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sieving Coefficient
In mass transfer, the sieving coefficient is a measure of equilibration between the concentrations of two mass transfer streams. It is defined as the mean pre- and post-contact concentration of the mass receiving stream divided by the pre- and post-contact concentration of the mass donating stream. S = \frac{C_d} where * ''S'' is the sieving coefficient * ''C''r is the mean concentration mass receiving stream * ''C''d is the mean concentration mass donating stream A sieving coefficient of unity implies that the concentrations of the receiving and donating stream equilibrate, i.e. the out- flow concentrations (post-mass transfer) of the mass donating and receiving stream are equal to one another. Systems with sieving coefficient that are greater than one require an external energy source, as they would otherwise violate the laws of thermodynamics. Sieving coefficients less than one represent a mass transfer process where the concentrations have not equilibrated. Contact ti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surgical Sieve
The surgical sieve is a thought process in medicine. It is a typical example of how to organise a structured examination answer for medical students and physicians when they are challenged with a question. It is also a way of constructing answers to questions from patients and their relatives in a logical manner, and structuring articles and reference texts in medicine. Some textbooks put emphasis on using the surgical sieve as a basic structure of diagnosis and management of illnesses. Overview Although there are several versions around the world with slight variations, the surgical sieve usually consist of the following types of process in the human body in any particular order: *Congenital *Acquired ** Vascular ** Infective ** Traumatic ** Autoimmune ** Metabolic ** Inflammatory **Neurological ** Neoplastic ** Degenerative ** Environmental ** Unknown A more extensive, and perhaps more concise mechanism of employing the surgical sieve is using the mnemonic ''MEDIC HAT PINE'': ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sieve Of Pritchard
In mathematics, the sieve of Pritchard is an algorithm for finding all prime numbers up to a specified bound. Like the ancient sieve of Eratosthenes, it has a simple conceptual basis in number theory. It is especially suited to quick hand computation for small bounds. Whereas the sieve of Eratosthenes marks off each non-prime for each of its prime factors, the sieve of Pritchard avoids considering almost all non-prime numbers by building progressively larger wheels, which represent the pattern of numbers not divisible by any of the primes processed thus far. It thereby achieves a better asymptotic complexity, and was the first sieve with a running time sublinear in the specified bound. Its asymptotic running-time has not been improved on, and it deletes fewer composites than any other known sieve. It was created in 1979 by Paul Pritchard. Since Pritchard has created a number of other sieve algorithms for finding prime numbers, the sieve of Pritchard is sometimes singled out by b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Whitewater")
