text stringlengths 0 73.6k | source stringclasses 4
values |
|---|---|
HLA-B52-Disease-In ulcerative colitis HLA-B52 appears to have the strongest linkage to ulcerative colitis in Japan. This form of disease is frequently found with Takayasu's arteritis.
In Takayasu's arteritis Takayasu's arteritis appears to have an independent link to B52 associated disease. The association with B*5201 ... | milkshake721/2.1M-wiki-STEM |
IBM 5151-IBM 5151-The IBM 5151 is a 12" transistor–transistor logic (TTL) monochrome monitor, shipped with the original IBM Personal Computer for use with the IBM Monochrome Display Adapter. A few other cards were designed to work with it, such as the Hercules Graphics Card. | milkshake721/2.1M-wiki-STEM |
IBM 5151-IBM 5151-The monitor has an 11.5-inch wide CRT (measured diagonally) with 90 degree deflection, etched to reduce glare, with a resolution of 350 horizontal lines and a 50 Hz refresh rate. It uses TTL digital inputs through a 9-pin D-shell connector, being able to display at least three brightness levels, accor... | milkshake721/2.1M-wiki-STEM |
IBM 5151-IBM 5151-The IBM 5151 uses the P39 phosphor type, producing a bright green monochrome image intended for displaying high-resolution text. This phosphor has high persistence, which decreases display flicker but causes smearing when the image changes. | milkshake721/2.1M-wiki-STEM |
Cortical visual impairment-Cortical visual impairment-Cortical visual impairment (CVI) is a form of visual impairment that is caused by a brain problem rather than an eye problem. (The latter is sometimes termed "ocular visual impairment" when discussed in contrast to cortical visual impairment.) Some people have both ... | milkshake721/2.1M-wiki-STEM |
Cortical visual impairment-Cortical visual impairment-CVI is also sometimes known as cortical blindness, although most people with CVI are not totally blind. The term neurological visual impairment (NVI) covers both CVI and total cortical blindness. Delayed visual maturation, another form of NVI, is similar to CVI, exc... | milkshake721/2.1M-wiki-STEM |
Cortical visual impairment-Cortical visual impairment-The major causes of CVI are as follows: asphyxia, hypoxia (a lack of sufficient oxygen in the body's blood cells), or ischemia (not enough blood supply to the brain), all of which may occur during the birth process; developmental brain defects; head injury; hydrocep... | milkshake721/2.1M-wiki-STEM |
Cortical visual impairment-Visual and Behavioural Characteristics-Visual and Behavioural Characteristics of CVI are individual and may include several (but not necessarily all) of the following: The person with CVI may exhibit what at first appears to be frequent variable changes in vision. However, it is the environme... | milkshake721/2.1M-wiki-STEM |
Cortical visual impairment-Visual and Behavioural Characteristics-One eye may perform significantly worse than the other, and depth perception can be very limited (although not necessarily zero). | milkshake721/2.1M-wiki-STEM |
Cortical visual impairment-Visual and Behavioural Characteristics-The field of view may be severely limited. The best vision might be in the centre (like tunnel vision) but more often it is at some other point, and it is difficult to tell what the person is really looking at. Note that if the person also has a common o... | milkshake721/2.1M-wiki-STEM |
Cortical visual impairment-Visual and Behavioural Characteristics-Some objects may be easier to see than others. For example, the person may have difficulty recognising faces or facial expressions but have fewer problems with written materials. This is presumably due to the different way that the brain processes differ... | milkshake721/2.1M-wiki-STEM |
Cortical visual impairment-Visual and Behavioural Characteristics-Colour and contrast are important. The brain's colour processing is distributed in such a way that it is more difficult to damage, so people with CVI usually retain full perception of colour. This can be used to advantage by colour-coding objects that mi... | milkshake721/2.1M-wiki-STEM |
Cortical visual impairment-Visual and Behavioural Characteristics-People with CVI strongly prefer a simplified view. When dealing with text, for example, the person might prefer to see only a small amount of it at once. People with CVI frequently hold text close to their eyes, both to make the text appear larger and to... | milkshake721/2.1M-wiki-STEM |
Cortical visual impairment-Visual and Behavioural Characteristics-In viewing an array of objects, people with CVI can more easily see them if they only have to look at one or two at a time. People with CVI also see familiar objects more easily than new ones. Placing objects against a plain background also makes them ea... | milkshake721/2.1M-wiki-STEM |
Cortical visual impairment-Visual and Behavioural Characteristics-Visual processing can take a lot of effort. Often the person has to make a conscious choice about how to divide mental effort between making sense of visual data and performing other tasks. For some people, maintaining eye contact is difficult, which can... | milkshake721/2.1M-wiki-STEM |
Cortical visual impairment-Visual and Behavioural Characteristics-It can also be difficult for some people with CVI to look at an object and reach for it at the same time. Looking and reaching are sometimes accomplished as two separate acts: look, then look away and reach. | milkshake721/2.1M-wiki-STEM |
Cortical visual impairment-Visual and Behavioural Characteristics-People with CVI can sometimes benefit from a form of blindsight, which manifests itself as a kind of awareness of one's surroundings that cannot consciously be explained (for example, the person correctly guesses what they should do in order to avoid an ... | milkshake721/2.1M-wiki-STEM |
Cortical visual impairment-Visual and Behavioural Characteristics-Approximately one third of people with CVI have some photophobia. It can take longer than usual to adjust to large changes in light level, and flash photography can be painful. On the other hand, CVI can also in some cases cause a desire to gaze compulsi... | milkshake721/2.1M-wiki-STEM |
Cortical visual impairment-Visual and Behavioural Characteristics-Although people (with or without CVI) generally assume that they see things as they really are, in reality the brain may be doing a certain amount of guessing and "filling in", which is why people sometimes think they see things that turn out on closer i... | milkshake721/2.1M-wiki-STEM |
Cortical visual impairment-Diagnosis-Diagnosing CVI is difficult. A diagnosis is usually made when visual performance is poor but it is not possible to explain this from an eye examination. Before CVI was widely known among professionals, some would conclude that the patient was faking their problems or had for some re... | milkshake721/2.1M-wiki-STEM |
20 Leonis Minoris-20 Leonis Minoris-20 Leonis Minoris is a binary star system in the northern constellation of Leo Minor. It is faintly visible to the naked eye, having an apparent visual magnitude of +5.4. Based upon an annual parallax shift of 66.46 mas, it is located 49 light years from the Sun. The star has a relat... | milkshake721/2.1M-wiki-STEM |
First-pass yield-First-pass yield-First-pass yield (FPY), also known as throughput yield (TPY), is defined as the number of units coming out of a process divided by the number of units going into that process over a specified period of time. | milkshake721/2.1M-wiki-STEM |
First-pass yield-Example-Consider the following: You have a process that is divided into four sub-processes: A, B, C and D. Assume that you have 100 units entering process A. To calculate first time yield (FTY) you would: Calculate the yield (number out of step/number into step) of each step. | milkshake721/2.1M-wiki-STEM |
First-pass yield-Example-Multiply these together.For example: (# units leaving the process as good parts) / (# units put into the process) = FTY 100 units enter A and 90 leave as good parts. The FTY for process A is 90/100 = 0.9000 90 units go into B and 80 leave as good parts. The FTY for process B is 80/90 = 0.8889 8... | milkshake721/2.1M-wiki-STEM |
First-pass yield-Example-You can also get the total process yield for the entire process by simply dividing the number of good units produced by the number going into the start of the process. In this case, 70/100 = 0.70 or 70% yield. | milkshake721/2.1M-wiki-STEM |
First-pass yield-Example-The same example using first pass yield (FPY) would take into account rework: (# units leaving process A as good parts with no rework) / (# units put into the process) 100 units enter process A, 5 were reworked, and 90 leave as good parts. The FPY for process A is (90-5)/100 = 85/100 = 0.8500 9... | milkshake721/2.1M-wiki-STEM |
Vomit fraud-Vomit fraud-Vomit fraud is a type of fraud in which a driver of a vehicle for hire falsely claims that an "incident requiring cleanup" occurred while a passenger was riding in the driver's vehicle. The company then charges the passenger a "cleanup fee" to reimburse the driver for having to clean the vehicle... | milkshake721/2.1M-wiki-STEM |
Vomit fraud-History-The Miami Herald first reported on the issue in July 2018. Passengers may face a fee of up to US$150 for causing incidents requiring significant cleanups of drivers' vehicles. By filing false reports of these incidents, drivers will receive the cleanup fees from the customers even though no incident... | milkshake721/2.1M-wiki-STEM |
Vomit fraud-Criminality-Due to company-friendly terms of service typically agreed to by passengers, police departments have been reluctant to press criminal charges against individuals who engage in the fraud, instead treating these cases as civil matters. However, in late October 2018, a Harwood, North Dakota, man who... | milkshake721/2.1M-wiki-STEM |
Gas leak-Gas leak-A gas leak refers to a leak of natural gas or another gaseous product from a pipeline or other containment into any area where the gas should not be present. Gas leaks can be hazardous to health as well as the environment. Even a small leak into a building or other confined space may gradually build u... | milkshake721/2.1M-wiki-STEM |
Gas leak-Fire and explosion safety-Pure natural gas is colorless and odorless, and is composed primarily of methane. Unpleasant scents in the form of traces of mercaptans are usually added, to assist in identifying leaks. This odor may be perceived as rotting eggs, or a faintly unpleasant skunk smell. Persons detecting... | milkshake721/2.1M-wiki-STEM |
Gas leak-Fire and explosion safety-As a result of the Pipeline Safety Improvement Act of 2002 passed in the United States, federal safety standards require companies providing natural gas to conduct safety inspections for gas leaks in homes and other buildings receiving natural gas. The gas company is required to inspe... | milkshake721/2.1M-wiki-STEM |
Gas leak-Harm to vegetation-Gas leaks can damage or kill plants. In addition to leaks from natural gas pipes, methane and other gases migrating from landfill garbage disposal sites can also cause chlorosis and necrosis in grass, weeds, or trees. In some cases, leaking gas may migrate as far as 100 feet (30 m) from the ... | milkshake721/2.1M-wiki-STEM |
Gas leak-Harm to animals-Methane is an asphyxiant gas which can reduce the normal oxygen concentration in breathing air. Small animals and birds are also more sensitive to toxic gas like carbon monoxide that are sometimes present with natural gas. The expression "canary in a coal mine" derives from the historical pract... | milkshake721/2.1M-wiki-STEM |
Gas leak-Greenhouse gas emissions-Methane, the primary constituent of natural gas, is up to 120 times as potent a greenhouse gas as carbon dioxide. Thus, the release of unburned natural gas produces much stronger effects than the carbon dioxide that would have been released if the gas had been burned as intended. | milkshake721/2.1M-wiki-STEM |
Gas leak-Leak grades-In the United States, most state and federal agencies have adopted the Gas Piping and Technology Committee (GPTC) standards for grading natural gas leaks.
A Grade 1 leak is a leak that represents an existing or probable hazard to persons or property, and requires immediate repair or continuous acti... | milkshake721/2.1M-wiki-STEM |
Gas leak-Studies-In 2012, Boston University professor Nathan Phillips and his students drove along all 785 miles (1,263 km) of Boston roads with a gas sensor, identifying 3300 leaks. The Conservation Law Foundation produced a map showing around 4000 leaks reported to the Massachusetts Department of Public Utilities. In... | milkshake721/2.1M-wiki-STEM |
Gas leak-Regulation-Massachusetts Legislation passed in 2014 requires gas suppliers to make greater efforts to control some of the 20,000 documented leaks in the US state of Massachusetts. The new law requires grade 1 and 2 leaks to be repaired if the street above a gas pipe is dug up, and requires priority be given to... | milkshake721/2.1M-wiki-STEM |
Gas leak-Regulation-Additional proposals not included in the law would have required grade 3 leaks to be repaired during road construction, and priority for leaks which are killing trees or which were near hospitals or churches.An attorney for the Conservation Law Foundation stated that the leaks were worth $38.8 milli... | milkshake721/2.1M-wiki-STEM |
Gas leak-History-Catastrophic gas leaks, such as the Bhopal disaster are well-recognized as problems, but the more-subtle effects of chronic low-level leaks have been slower to gain recognition. | milkshake721/2.1M-wiki-STEM |
Gas leak-Other contexts-In work with dangerous gases (such as in a lab or industrial setting), a gas leak may require hazmat emergency response, especially if the leaked material is flammable, explosive, corrosive, or toxic. | milkshake721/2.1M-wiki-STEM |
Limestone-Limestone-Limestone (calcium carbonate CaCO3) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of CaCO3. Limestone forms when these minerals precipitate out of water containing ... | milkshake721/2.1M-wiki-STEM |
Limestone-Limestone-Limestone has numerous uses: as a chemical feedstock for the production of lime used for cement (an essential component of concrete), as aggregate for the base of roads, as white pigment or filler in products such as toothpaste or paints, as a soil conditioner, and as a popular decorative addition t... | milkshake721/2.1M-wiki-STEM |
Limestone-Description-Limestone is composed mostly of the minerals calcite and aragonite, which are different crystal forms of calcium carbonate (CaCO3). Dolomite, CaMg(CO3)2, is an uncommon mineral in limestone, and siderite or other carbonate minerals are rare. However, the calcite in limestone often contains a few p... | milkshake721/2.1M-wiki-STEM |
Limestone-Description-Grains Most grains in limestone are skeletal fragments of marine organisms such as coral or foraminifera. These organisms secrete structures made of aragonite or calcite, and leave these structures behind when they die. Other carbonate grains composing limestones are ooids, peloids, and limeclasts... | milkshake721/2.1M-wiki-STEM |
Limestone-Description-Mud The grains of most limestones are embedded in a matrix of carbonate mud. This is typically the largest fraction of an ancient carbonate rock. Mud consisting of individual crystals less than 5 μm (0.20 mils) in length is described as micrite. In fresh carbonate mud, micrite is mostly small arag... | milkshake721/2.1M-wiki-STEM |
Limestone-Description-Other characteristics Limestone outcrops are recognized in the field by their softness (calcite and aragonite both have a Mohs hardness of less than 4, well below common silicate minerals) and because limestone bubbles vigorously when a drop of dilute hydrochloric acid is dropped on it. Dolomite i... | milkshake721/2.1M-wiki-STEM |
Limestone-Description-The makeup of a carbonate rock outcrop can be estimated in the field by etching the surface with dilute hydrochloric acid. This etches away the calcite and aragonite, leaving behind any silica or dolomite grains. The latter can be identified by their rhombohedral shape.Crystals of calcite, quartz,... | milkshake721/2.1M-wiki-STEM |
Limestone-Description-Classification Two major classification schemes, the Folk and Dunham, are used for identifying the types of carbonate rocks collectively known as limestone. | milkshake721/2.1M-wiki-STEM |
Limestone-Description-Folk classification Robert L. Folk developed a classification system that places primary emphasis on the detailed composition of grains and interstitial material in carbonate rocks. Based on composition, there are three main components: allochems (grains), matrix (mostly micrite), and cement (spar... | milkshake721/2.1M-wiki-STEM |
Limestone-Description-Dunham classification Robert J. Dunham published his system for limestone in 1962. It focuses on the depositional fabric of carbonate rocks. Dunham divides the rocks into four main groups based on relative proportions of coarser clastic particles, based on criteria such as whether the grains were ... | milkshake721/2.1M-wiki-STEM |
Limestone-Description-Other descriptive terms Travertine is a term applied to calcium carbonate deposits formed in freshwater environments, particularly waterfalls, cascades and hot springs. Such deposits are typically massive, dense, and banded. When the deposits are highly porous, so that they have a spongelike textu... | milkshake721/2.1M-wiki-STEM |
Limestone-Formation-Limestone forms when calcite or aragonite precipitate out of water containing dissolved calcium, which can take place through both biological and nonbiological processes. The solubility of calcium carbonate (CaCO3) is controlled largely by the amount of dissolved carbon dioxide (CO2) in the water. T... | milkshake721/2.1M-wiki-STEM |
Limestone-Formation-Near-surface water of the earth's oceans are oversaturated with CaCO3 by a factor of more than six. The failure of CaCO3 to rapidly precipitate out of these waters is likely due to interference by dissolved magnesium ions with nucleation of calcite crystals, the necessary first step in precipitation... | milkshake721/2.1M-wiki-STEM |
Limestone-Formation-The origin of carbonate mud, and the processes by which it is converted to micrite, continue to be a subject of research. Modern carbonate mud is composed mostly of aragonite needles around 5 μm (0.20 mils) in length. Needles of this shape and composition are produced by calcareous algae such as Pen... | milkshake721/2.1M-wiki-STEM |
Limestone-Formation-Diagenesis Diagenesis is the process in which sediments are compacted and turned into solid rock. During diagenesis of carbonate sediments, significant chemical and textural changes take place. For example, aragonite is converted to low-magnesium calcite. Diagenesis is the likely origin of pisoliths... | milkshake721/2.1M-wiki-STEM |
Limestone-Formation-Silicification occurs early in diagenesis, at low pH and temperature, and contributes to fossil preservation. Silicification takes place through the reaction: CaCO CO SiO SiO Ca HCO 3−+2H2O Fossils are often preserved in exquisite detail as chert.Cementing takes place rapidly in carbonate sediments,... | milkshake721/2.1M-wiki-STEM |
Limestone-Occurrence-About 20% to 25% of sedimentary rock is carbonate rock, and most of this is limestone. Limestone is found in sedimentary sequences as old as 2.7 billion years. However, the compositions of carbonate rocks show an uneven distribution in time in the geologic record. About 95% of modern carbonates are... | milkshake721/2.1M-wiki-STEM |
Limestone-Occurrence-Limestone formations tend to show abrupt changes in thickness. Large moundlike features in a limestone formation are interpreted as ancient reefs, which when they appear in the geologic record are called bioherms. Many are rich in fossils, but most lack any connected organic framework like that see... | milkshake721/2.1M-wiki-STEM |
Limestone-Occurrence-In rare cases, turbidites or other silica-rich sediments bury and preserve benthic (deep ocean) carbonate deposits. Ancient benthic limestones are microcrystalline and are identified by their tectonic setting. Fossils typically are foraminifera and coccoliths. No pre-Jurassic benthic limestones are... | milkshake721/2.1M-wiki-STEM |
Limestone-Occurrence-Limestone and living organisms Most limestone is formed by the activities of living organisms near reefs, but the organisms responsible for reef formation have changed over geologic time. For example, stromatolites are mound-shaped structures in ancient limestones, interpreted as colonies of cyanob... | milkshake721/2.1M-wiki-STEM |
Limestone-Occurrence-Micritic mud mounds Micricitic mud mounds are subcircular domes of micritic calcite that lacks internal structure. Modern examples are up to several hundred meters thick and a kilometer across, and have steep slopes (with slope angles of around 50 degrees). They may be composed of peloids swept tog... | milkshake721/2.1M-wiki-STEM |
Limestone-Occurrence-Organic reefs Organic reefs form at low latitudes in shallow water, not more than a few meters deep. They are complex, diverse structures found throughout the fossil record. The frame-building organisms responsible for organic reef formation are characteristic of different geologic time periods: Ar... | milkshake721/2.1M-wiki-STEM |
Limestone-Limestone landscape-Limestone is partially soluble, especially in acid, and therefore forms many erosional landforms. These include limestone pavements, pot holes, cenotes, caves and gorges. Such erosion landscapes are known as karsts. Limestone is less resistant to erosion than most igneous rocks, but more r... | milkshake721/2.1M-wiki-STEM |
Limestone-Uses-Limestone is a raw material that is used globally in a variety of different ways including construction, agriculture and as industrial materials. Limestone is very common in architecture, especially in Europe and North America. Many landmarks across the world, including the Great Pyramid and its associat... | milkshake721/2.1M-wiki-STEM |
Limestone-Uses-Limestone was most popular in the late 19th and early 20th centuries. Railway stations, banks and other structures from that era were made of limestone in some areas. It is used as a facade on some skyscrapers, but only in thin plates for covering, rather than solid blocks. In the United States, Indiana,... | milkshake721/2.1M-wiki-STEM |
Limestone-Uses-Limestone is the raw material for production of lime, primarily known for treating soils, purifying water and smelting copper. Lime is an important ingredient used in chemical industries. Limestone and (to a lesser extent) marble are reactive to acid solutions, making acid rain a significant problem to t... | milkshake721/2.1M-wiki-STEM |
Limestone-Uses-Other uses include: It is the raw material for the manufacture of quicklime (calcium oxide), slaked lime (calcium hydroxide), cement and mortar.
Pulverized limestone is used as a soil conditioner to neutralize acidic soils (agricultural lime).
Is crushed for use as aggregate—the solid base for many roads... | milkshake721/2.1M-wiki-STEM |
Limestone-Uses-It can aid in the removal of toxic components created from coal burning plants and layers of polluted molten metals.Many limestone formations are porous and permeable, which makes them important petroleum reservoirs. About 20% of North American hydrocarbon reserves are found in carbonate rock. Carbonate ... | milkshake721/2.1M-wiki-STEM |
Limestone-Uses-Scarcity Limestone is a major industrial raw material that is in constant demand. This raw material has been essential in the iron and steel industry since the nineteenth century. Companies have never had a shortage of limestone; however, it has become a concern as the demand continues to increase and it... | milkshake721/2.1M-wiki-STEM |
Limestone-Uses-Occupational safety and health Powdered limestone as a food additive is generally recognized as safe and limestone is not regarded as a hazardous material. However, limestone dust can be a mild respiratory and skin irritant, and dust that gets into the eyes can cause corneal abrasions. Because limestone ... | milkshake721/2.1M-wiki-STEM |
Limestone-Uses-United States The Occupational Safety and Health Administration (OSHA) has set the legal limit (permissible exposure limit) for limestone exposure in the workplace as 15 mg/m3 (0.0066 gr/cu ft) total exposure and 5 mg/m3 (0.0022 gr/cu ft) respiratory exposure over an 8-hour workday. The National Institut... | milkshake721/2.1M-wiki-STEM |
Limestone-Uses-Graffiti Removing graffiti from weathered limestone is difficult because it is a porous and permeable material. The surface is fragile so usual abrasion methods run the risk of severe surface loss. Because it is an acid-sensitive stone some cleaning agents cannot be used due to adverse effects. | milkshake721/2.1M-wiki-STEM |
Digital contact tracing-Digital contact tracing-Digital contact tracing is a method of contact tracing relying on tracking systems, most often based on mobile devices, to determine contact between an infected patient and a user. It came to public prominence in the form of COVID-19 apps during the COVID-19 pandemic. Sin... | milkshake721/2.1M-wiki-STEM |
Digital contact tracing-History-Digital contact tracing has existed as a concept since at least 2007, and it was proven to be effective in the first empirical investigation using Bluetooth data in 2014. However, it was largely held back by the necessity of widespread adoption. A 2018 patent application by Facebook disc... | milkshake721/2.1M-wiki-STEM |
Digital contact tracing-Methodologies-Bluetooth proximity tracing Bluetooth, more specifically Bluetooth Low Energy, is used to track encounters between two phones. Typically, Bluetooth is used to transmit anonymous, time-shifting identifiers to nearby devices. Receiving devices then commit these identifiers to a local... | milkshake721/2.1M-wiki-STEM |
Digital contact tracing-Methodologies-Location tracking Location tracking can be achieved via cell phone tower networks or using GPS. Cell phone tower network-based location tracking has the advantage of eliminating the need to download an app. Location tracking enables calculating user position with certain levels of ... | milkshake721/2.1M-wiki-STEM |
Digital contact tracing-Methodologies-GEO-QR code tagging Another method of tracking is assigning a venue or a place to a QR code and having the people scan the QR code by their mobiles to tag their visits. By this method, people voluntarily check in and check out from the location and they have control on their privac... | milkshake721/2.1M-wiki-STEM |
Digital contact tracing-Methodologies-Ultrasound Using ultrasound is another way to record contacts. Smartphones emit ultrasound signals which are detected by other smartphones. NOVID, which is the only digital contact tracing app with sub-meter contact tracing accuracy, primarily uses Ultrasound.
CCTV with facial reco... | milkshake721/2.1M-wiki-STEM |
Digital contact tracing-Reporting centralization-One of the largest privacy concerns raised about protocols such as BlueTrace or PEPP-PT is the usage of centralised report processing. In a centralised report processing protocol a user must upload their entire contact log to a health authority administered server, where... | milkshake721/2.1M-wiki-STEM |
Digital contact tracing-Ephemeral IDs-Ephemeral IDs, also known as EphIDs, Temporary IDs or Rolling Proximity IDs, are the tokens exchanged by clients during an encounter to uniquely identify themselves. These IDs regularly change, generally ever 20 minutes, and are not constituted by plain text personally identifiabl... | milkshake721/2.1M-wiki-STEM |
Digital contact tracing-Issues and controversies-During the unfolding COVID-19 pandemic, reactions to digital contact tracing applications worldwide have at times been drastic and often polarized. | milkshake721/2.1M-wiki-STEM |
Digital contact tracing-Issues and controversies-Despite holding the promise to drastically reduce contagion and allow for a relaxation of social distancing measures, digital contact tracing applications have been criticized by academia and the public alike. The main issues concern the technical efficacy of such system... | milkshake721/2.1M-wiki-STEM |
Digital contact tracing-Issues and controversies-Independent audit and governance Voluntary adoption of digital contact tracing has fallen short of some estimated thresholds for efficacy. This has been referred to as a "trust-gap" and advocates for digital contact tracing have endeavored to identify ways to bridge the ... | milkshake721/2.1M-wiki-STEM |
Digital contact tracing-Issues and controversies-Technical feasibility The technical feasibility and necessity of digital contact tracing is the subject of debate, with its major proponents claiming it to be indispensable to stop the spread of pandemics, as COVID-19, and its opponents raising points on its technical fu... | milkshake721/2.1M-wiki-STEM |
Digital contact tracing-Issues and controversies-System requirements Smartphone-based digital contact tracing applications have system requirements such as Android/iOS version, bluetooth enabled, gps enabled. The system requirements facilitate maintainability and technical effectiveness at the cost of the adoption rate... | milkshake721/2.1M-wiki-STEM |
Digital contact tracing-Issues and controversies-Ethical issues Other than having doubts about the technical effectiveness of smartphone-based contact tracing systems, publics and academia are confronted with ethical issues about the use of smartphone data by central governments to track and direct citizen behaviour. T... | milkshake721/2.1M-wiki-STEM |
Digital contact tracing-Issues and controversies-Privacy On privacy, the main problem about digital contact tracing regards type of information which can be collected from each person and the way related data is treated by companies and institutions. The type of data which is collected, and the approach being used (cen... | milkshake721/2.1M-wiki-STEM |
Digital contact tracing-Issues and controversies-Surveillance Closely related to privacy, comes the issue of surveillance: too much personal data in centralized governmental database could set a dangerous precedent on the way governments are capable of “spying” on individual behaviour. The possibility that a wide-rangi... | milkshake721/2.1M-wiki-STEM |
Digital contact tracing-Issues and controversies-Environment Electronic waste may result from the need to purchase a new smartphone to meet the system requirements of smartphone-based digital contact tracing applications. | milkshake721/2.1M-wiki-STEM |
Formic anhydride-Formic anhydride-Formic anhydride, also called methanoic anhydride, is an organic compound with the chemical formula C2H2O3 and a structural formula of (H(C=O)−)2O. It can be viewed as the anhydride of formic acid (HCOOH). | milkshake721/2.1M-wiki-STEM |
Formic anhydride-Preparation-Formic anhydride can be obtained by reaction of formyl fluoride with excess sodium formate and a catalytic amount of formic acid in ether at −78 °C. It can also be produced by reacting formic acid with N,N′-dicyclohexylcarbodiimide ((C6H11−N=)2C) in ether at −10 °C. It can also be obtained ... | milkshake721/2.1M-wiki-STEM |
Formic anhydride-Properties-Formic anhydride is a liquid with boiling point 24 °C at 20 mmHg. It is stable in diethyl ether solution. It can be isolated by low-temperature, low-pressure distillation, but decomposes on heating above room temperature. At room temperature and higher, it decomposes through a decarbonylatio... | milkshake721/2.1M-wiki-STEM |
Formic anhydride-Properties-The decomposition of formic anhydride may be catalyzed by formic acid.Formic anhydride can be detected in the gas-phase reaction of ozone with ethylene. The molecule is planar in the gas phase. | milkshake721/2.1M-wiki-STEM |
Merzling-Merzling-Merzling is a white grape variety used for wine. It was bred in 1960 by Johannes Zimmermann at the viticultural institute in Freiburg, Germany by crossing Seyve-Villard 5276 with the cross Riesling × Pinot gris.
The variety was initially known under its breeding code FR 993-60, and was later named aft... | milkshake721/2.1M-wiki-STEM |
Merzling-Properties-Merzling ripens early, give high yields and shows good resistance against fungal diseases and spring frosts. Its wines are similar to those of Müller-Thurgau. | milkshake721/2.1M-wiki-STEM |
Merzling-Offspring-Due to its resistance against fungal diseases, Merzling and Merzling offspring has been used as a crossing partner for many other new crossings, including Baron, Bronner, Cabernet Cantor, Cabernet Carol, Cabernet Cortis, Helios, Monarch, Prior and Solaris. | milkshake721/2.1M-wiki-STEM |
Merzling-Synonyms-The only synonyms of Merzling are FR 993-60 or Freiburg 993-60. | milkshake721/2.1M-wiki-STEM |
Sunchime-Sunchime-A sunchime is a device analogous to a windchime but which uses sunlight instead of wind. A number of embodiments are documented, including: an architectural sculpture by Jeff G. Smith in Sandcastle Retreat, Clearwater, Florida using glass and steel elements suspended in a 12-foot-diameter (3.7 m) skyl... | milkshake721/2.1M-wiki-STEM |
Pocket computer-Pocket computer-A pocket computer was a 1980s-era user programmable calculator-sized computer that had fewer screen lines, and often fewer characters per line, than the Pocket-sized computers introduced beginning in 1989. Manufacturers included Casio, Hewlett-Packard, Sharp, Tandy/Radio Shack (selling C... | milkshake721/2.1M-wiki-STEM |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.