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Also there are sanctions against those who access data inappropriately, specifically instant dismissal and loss of professional registration. A January 2005 survey among doctors indicated that support for the initiative as an 'important NHS priority' had dropped to 41%, from 70% the previous year. There have been conce... | Wikipedia - NHS Connecting for Health | null | null | null |
NPs, in their implementation, are covered with coatings and sometimes given positive or negative charges depending upon the intended function. Studies have found that these external factors affect the degree of toxicity of NPs. | Wikipedia - Nanotoxicology | null | null | null |
NRC-HAA also operates the Dominion Radio Astrophysical Observatory outside of Penticton, British Columbia and the Canadian Astronomy Data Centre as well as managing Canadian involvement in the Canada-France-Hawaii Telescope, Gemini Observatory, Atacama Large Millimeter Array, the Square Kilometre Array, and the Thirty ... | Wikipedia - NRC Herzberg Astronomy and Astrophysics Research Centre | null | null | null |
NREM Stage 1 (N1 – light sleep, somnolence, drowsy sleep – 5–10% of total sleep in adults): This is a stage of sleep that usually occurs between sleep and wakefulness, and sometimes occurs between periods of deeper sleep and periods of REM. The muscles are active, and the eyes roll slowly, opening and closing moderatel... | Wikipedia - Neuroscience of sleep | null | null | null |
Sudden twitches and hypnic jerks, also known as positive myoclonus, may be associated with the onset of sleep during N1. Some people may also experience hypnagogic hallucinations during this stage. During Non-REM1, humans lose some muscle tone and most conscious awareness of the external environment. | Wikipedia - Neuroscience of sleep | null | null | null |
NREM Stage 2 (N2 – 45–55% of total sleep in adults): In this stage, theta activity is observed and sleepers become gradually harder to awaken; the alpha waves of the previous stage are interrupted by abrupt activity called sleep spindles (or thalamocortical spindles) and K-complexes. Sleep spindles range from 11 to 16 ... | Wikipedia - Neuroscience of sleep | null | null | null |
NREM Stage 3 (N3 – 15–25% of total sleep in adults): Formerly divided into stages 3 and 4, this stage is called slow-wave sleep (SWS) or deep sleep. SWS is initiated in the preoptic area and consists of delta activity, high amplitude waves at less than 3.5 Hz. The sleeper is less responsive to the environment; many env... | Wikipedia - Neuroscience of sleep | null | null | null |
(EEG standards define delta waves to be from 0 to 4 Hz, but sleep standards in both the original R&K model (Allan Rechtschaffen and Anthony Kales in the "R&K sleep scoring manual. "), as well as the new 2007 AASM guidelines have a range of 0.5–2 Hz.) This is the stage in which parasomnias such as night terrors, nocturn... | Wikipedia - Neuroscience of sleep | null | null | null |
NREM sleep is characterized by decreased global and regional cerebral blood flow. It constitutes ~80% of all sleep in adult humans. Initially, it was expected that the brainstem, which was implicated in arousal would be inactive, but this was later on found to have been due to low resolution of PET studies and it was s... | Wikipedia - Neuroscience of sleep | null | null | null |
Many areas of the cortex are also inactive, but to different levels. For example, the ventromedial prefrontal cortex is considered the least active area while the primary cortex, the least deactivated.NREM sleep is characterized by slow oscillations, spindles and delta waves. The slow oscillations have been shown to be... | Wikipedia - Neuroscience of sleep | null | null | null |
The delta waves have been shown to be generated by recurrent connections within the cerebral cortex. During slow wave sleep, the cortex generates brief periods of activity and inactivity at 0.5-4 Hz, resulting in the generation of the delta waves of slow wave sleep. During this period, the thalamus stops relaying senso... | Wikipedia - Neuroscience of sleep | null | null | null |
NSA was embroiled in some controversy concerning its involvement in the creation of the Data Encryption Standard (DES), a standard and public block cipher algorithm used by the U.S. government and banking community. During the development of DES by IBM in the 1970s, NSA recommended changes to some details of the design... | Wikipedia - National Security Agency | null | null | null |
NSA was reported in 2008 to use its computing capability to analyze "transactional" data that it regularly acquires from other government agencies, which gather it under their own jurisdictional authorities. As part of this effort, NSA now monitors huge volumes of records of domestic email data, web addresses from Inte... | Wikipedia - National Security Agency | null | null | null |
NSDT is primarily used for mobile banking transactions through the mobile money platform Tagpay. It is also used to securely open doors and enable authentication on websites. | Wikipedia - Near sound data transfer | null | null | null |
NSERC's Canada Gold Medal for Science and Engineering was first awarded in 1991 to Raymond Lemieux, a chemist working at University of Alberta. Mathematician James Arthur from the University of Toronto was the 1999 recipient, the last year before the award was renamed in honour of Gerhard Herzberg, the winner of the 19... | Wikipedia - Gerhard Herzberg Canada Gold Medal for Science and Engineering | null | null | null |
Eligible facilities include universities, government and private labs. Nominations can be submitted by any Canadian citizen or permanent resident. The winner is chosen by a selection committee representing different scientific disciplines, who make a recommendations to the current NSERC president. The award consists of... | Wikipedia - Gerhard Herzberg Canada Gold Medal for Science and Engineering | null | null | null |
NSF also supports the George E. Brown, Jr. Network for Earthquake Engineering Simulation The NSF Hazard Mitigation and Structural Engineering program (HMSE) supports research on new technologies for improving the behaviour and response of structural systems subject to earthquake hazards; fundamental research on safety ... | Wikipedia - Earthquake engineering research | null | null | null |
The equipment sites (labs) and a central data repository are connected to the global earthquake engineering community via the NEEShub website. The NEES website is powered by HUBzero software developed at Purdue University for nanoHUB specifically to help the scientific community share resources and collaborate. The cyb... | Wikipedia - Earthquake engineering research | null | null | null |
NST is an example of image stylization, a problem studied for over two decades within the field of non-photorealistic rendering. The first two example-based style transfer algorithms were image analogies and image quilting. Both of these methods were based on patch-based texture synthesis algorithms. Given a training p... | Wikipedia - Style transfer | null | null | null |
NTA is a tripodal tetradentate trianionic ligand.The uses of NTA are similar to those of EDTA, both being chelating agents. It is used for water softening and as a replacement to sodium and potassium triphosphate in detergents, and cleansers. In one application, NTA as a chelating agent removes Cr, Cu, and As from wood... | Wikipedia - Nitrilotriacetic acid | null | null | null |
NTFS contains several files that define and organize the file system. In all respects, most of these files are structured like any other user file ($Volume being the most peculiar), but are not of direct interest to file system clients. These metafiles define files, back up critical file system data, buffer file system... | Wikipedia - Master File Table | null | null | null |
These metafiles are treated specially by Windows, handled directly by the NTFS.SYS driver and are difficult to directly view: special purpose-built tools are needed. As of Windows 7, the NTFS driver completely prohibits user access, resulting in a BSoD whenever an attempt to execute a metadata file is made. One such to... | Wikipedia - Master File Table | null | null | null |
For example, to obtain information on the "$MFT"-Master File Table Segment the following command is used: nfi.exe c:\$MFT Another way to bypass the restriction is to use 7-Zip's file manager and go to the low-level NTFS path \\.\X:\ (where X:\ resembles any drive/partition). Here, 3 new folders will appear: $EXTEND, (... | Wikipedia - Master File Table | null | null | null |
NTFS is made up of several components including: a partition boot sector (PBS) that holds boot information; the master file table that stores a record of all files and folders in the filesystem; a series of meta files that help structure meta data more efficiently; data streams and locking mechanisms. Internally, NTFS ... | Wikipedia - Alternate data streams | null | null | null |
This means UTF-16 code units are supported, but the file system does not check whether a sequence is valid UTF-16 (it allows any sequence of short values, not restricted to those in the Unicode standard). In Win32 namespace, any UTF-16 code units are case insensitive whereas in POSIX namespace they are case sensitive. ... | Wikipedia - Alternate data streams | null | null | null |
Certain names are reserved in the volume root directory and cannot be used for files. These are $MFT, $MFTMirr, $LogFile, $Volume, $AttrDef, . (dot), $Bitmap, $Boot, $BadClus, $Secure, $UpCase, and $Extend. | Wikipedia - Alternate data streams | null | null | null |
. (dot) and $Extend are both directories; the others are files. The NT kernel limits full paths to 32,767 UTF-16 code units. There are some additional restrictions on code points and file names. | Wikipedia - Alternate data streams | null | null | null |
NTFS stores file information as a set of fixed-size records (typically, 1KB) within the so-called Master File Table (MFT). File name and file allocation information are encapsulated into these records, providing complete information about each specific file. When the system deletes a file, the entry in the Master File ... | Wikipedia - Undeletion | null | null | null |
NTFS uses access control lists and user-level encryption to help secure user data. | Wikipedia - NTFS file system | null | null | null |
NUTS regions are generally based on existing national administrative subdivisions. In countries where only one or two regional subdivisions exist, or where the population of existing subdivisions is too small or too large, a second and/or third level is created. This may be on the first level (ex. France, Italy, Greece... | Wikipedia - NUTS 2 | null | null | null |
In countries with small populations, where the entire country would be placed on the NUTS 2 or even NUTS 3 level (ex. Luxembourg, Cyprus), the regions at levels 1, 2 and 3 are identical to each other (and also to the entire country), but are coded with the appropriate length codes levels 1, 2 and 3. The NUTS system fav... | Wikipedia - NUTS 2 | null | null | null |
NV centers emit bright red light (3E→3A transitions), if excited off-resonantly by visible green light (3A →3E transitions). This can be done with convenient light sources such as argon or krypton lasers, frequency doubled Nd:YAG lasers, dye lasers, or He-Ne lasers. Excitation can also be achieved at energies below tha... | Wikipedia - Diamond-based quantum computer | null | null | null |
However, cooling the NV centers with liquid nitrogen or liquid helium dramatically narrows the lines down to a width of a few MHz. At low temperature it also becomes possible to specifically address the zero-phonon line (ZPL). An important property of the luminescence from individual NV centers is its high temporal sta... | Wikipedia - Diamond-based quantum computer | null | null | null |
Na2Te finds use in organic synthesis, both as a reagent for reductions and as a source of Te in the synthesis of organotellurium compounds. Aryl halides are substituted to diaryl tellurides, as illustrated by the synthesis of dinaphthyltelluride: Na2Te + 2 C10H7I → (C10H7)2Te + 2 NaINa2Te reacts with 1,3-diynes to give... | Wikipedia - Sodium telluride | null | null | null |
Naamah (Jewish mythology) Naberius/Cerbere/Naberus (Christian demonology) Nalai (Mandaean mythology) Ninurta (Sumerian mythology, Akkadian mythology) Niuli (Mandaean mythology) Namtar (Sumerian mythology) Nar as-samum (Islamic folklore) | Wikipedia - List of theological demons | null | null | null |
Naaman proposed an adaption of the significance level to the sample size in order to control false positives: αn, such that αn = n−r with r > 1/2. At least in the numerical example, taking r = 1/2, results in a significance level of 0.00318, so the frequentist would not reject the null hypothesis, which is in agreement... | Wikipedia - Lindley's paradox | null | null | null |
Nader Engheta and Richard W. Ziolkowski, are also the editors of this book. They have compiled the published research related to metamaterials at the end of each chapter of this book. The content of each chapter describes the path the current research is taking in its respective domain. Included are descriptions of bas... | Wikipedia - Metamaterials: Physics and Engineering Explorations | null | null | null |
The chapters are written by contributors who are carrying out the actual research and applications, including some chapter contributions by Engheta and Ziolkowski. Hence, the content of the book also consists of original research papers by researchers in the field, who are knowledgeable about metamaterials, and who hav... | Wikipedia - Metamaterials: Physics and Engineering Explorations | null | null | null |
Nader Engheta received his Ph.D. in Electrical Engineering (with a minor in Physics), in 1982 from the California Institute of Technology. Currently he is a Professor of Electrical and Systems Engineering, and Professor of Bioengineering at the University of Pennsylvania. His current research activities include metamat... | Wikipedia - Metamaterials: Physics and Engineering Explorations | null | null | null |
and Ph.D. in physics, in 1975 and 1980, respectively from the University of Illinois at Urbana-Champaign. Currently he has a dual appointment at the University of Arizona. | Wikipedia - Metamaterials: Physics and Engineering Explorations | null | null | null |
He is a Professor of Electrical and Computer Engineering, and a Professor of the Optical Sciences. His current research includes metamaterial physics and engineering related to low frequency and high frequency antenna systems, and includes nanoparticle lasers.Through their respective research, both Engheta and Ziolkows... | Wikipedia - Metamaterials: Physics and Engineering Explorations | null | null | null |
Nadic anhydride exhibits endo-exo isomerism. In the exo isomer, the acid anhydride group points in the same direction towards the bridging carbon of the norbornene, while in the endo isomer the acid anhydride group points in the opposite direction. These isomers are respectively named cis-5-norbornene-exo-2,3-dicarboxy... | Wikipedia - Nadic anhydride | null | null | null |
Nagarjuna (c. 150 – c. 250 CE), one of the most influential Buddhist thinkers, defended the theory of the emptiness (shunyata) of phenomena and attacked theories that posited an essence or true existence (svabhava) to phenomena in his magnum opus The Fundamental Verses on the Middle Way. He used the Buddhist catuṣkoṭi ... | Wikipedia - Buddhist logic | null | null | null |
In Nagarjuna's works and those of his followers, the four positions on a particular thesis are negated or ruled out (pratiṣedha) as exemplified by the first verse of Nagarjuna's Middle way verses which focuses on a critique of causation: "Entities of any kind are not ever found anywhere produced from themselves, from a... | Wikipedia - Buddhist logic | null | null | null |
: 52 According to Matilal, Nagarjuna's position of not putting forth any implied thesis through his refutations would be rational if seen as a form of illocutionary act. : 52 Nagarjuna's reductions and the structure of the catuṣkoṭi became very influential in the Buddhist Madhyamaka school of philosophy which sees itse... | Wikipedia - Buddhist logic | null | null | null |
Naive algorithms are easy to understand and implement, but they are not optimal, since they can be much slower than other algorithms. | Wikipedia - Visibility polygon | null | null | null |
Naive set theory -- Name -- Narrative logic -- Natural deduction -- Natural kind -- Natural language -- Necessary and sufficient -- Necessity and sufficiency -- Negation -- Neutrality (philosophy) -- Nirvana fallacy -- Nixon diamond -- No true Scotsman -- Nominal identity -- Non-Aristotelian logic -- Non-classical logi... | Wikipedia - Index of logic articles | null | null | null |
Naive set theory interprets Boolean operations as acting on subsets of a given set X. As we saw earlier this behavior exactly parallels the coordinate-wise combinations of bit vectors, with the union of two sets corresponding to the disjunction of two bit vectors and so on. | Wikipedia - Contact algebra | null | null | null |
Nakamura, Shuji – Nichols, Nathaniel B. – Norton, Edward Lawry – Noyce, Robert – Nyquist, Harry – | Wikipedia - Index of electrical engineering articles | null | null | null |
Nakayama's lemma also has several versions in homological algebra. The above statement about epimorphisms can be used to show: Let M {\displaystyle M} be a finitely generated module over a local ring. Then M {\displaystyle M} is projective if and only if it is free. This can be used to compute the Grothendieck group of... | Wikipedia - Nakayama's lemma | null | null | null |
More generally, one has Let R {\displaystyle R} be a local ring and M {\displaystyle M} a finitely generated module over R {\displaystyle R} . Then the projective dimension of M {\displaystyle M} over R {\displaystyle R} is equal to the length of every minimal free resolution of M {\displaystyle M} . Moreover, the proj... | Wikipedia - Nakayama's lemma | null | null | null |
Naked extracellular DNA (eDNA), most of it released by cell death, is nearly ubiquitous in the environment. Its concentration in soil may be as high as 2 μg/L, and its concentration in natural aquatic environments may be as high at 88 μg/L. Various possible functions have been proposed for eDNA: it may be involved in h... | Wikipedia - Double-stranded DNA | null | null | null |
Nalorphine has a number of analogues including niconalorphine (the nicomorphine analogue), diacetylnalorphine (heroin analogue), dihydronalorphine (dihydromorphine), and a number of others as well as a number of codeine-based analogues. | Wikipedia - Nalorphine | null | null | null |
Naloxone, also known as N-allylnoroxymorphone or as 17-allyl-4,5α-epoxy-3,14-dihydroxymorphinan-6-one, is a synthetic morphinan derivative and was derived from oxymorphone (14-hydroxydihydromorphinone), an opioid analgesic. Oxymorphone, in turn, was derived from morphine, an opioid analgesic and naturally occurring con... | Wikipedia - Naloxone | null | null | null |
Naltrexone, also known as N-cyclopropylmethylnoroxymorphone, is a derivative of oxymorphone (14-hydroxydihydromorphinone). It is specifically the derivative of oxymorphone in which the tertiary amine methyl substituent is replaced with methylcyclopropane. | Wikipedia - Naltrexone | null | null | null |
Name: Astrolabe of Barcelona Place of manufacture: Barcelona, Principality of Catalonia Date / period: To the year 980 Material and technical: Brass decorated with recorded Dimensions: 15,2 cm of diameter Conservation (city): Paris Conservation (place): Bequeathed by Marcel Destombes to the Musée of l'Institut du Monde... | Wikipedia - Barcelona astrolabe | null | null | null |
Name: Dalian Institute of Chemical Physics, Chinese Academy of Sciences Established: 1949 Director: Liu Zhongmin (刘中民) Address: No. 457, Zhongshan Road, Shahekou District, Dalian, Liaoning, China. Postal code: 116023 Transportation Bus: Huawusuo Stop, No. 16, 22, 23, 28, 37, 406, 531, 901 Tramway: Huawusuo Stop, No. 20... | Wikipedia - Dalian Institute of Chemical Physics | null | null | null |
Named after its inventor, biologist Edwin Southern, the Southern blot is a method for probing for the presence of a specific DNA sequence within a DNA sample. DNA samples before or after restriction enzyme (restriction endonuclease) digestion are separated by gel electrophoresis and then transferred to a membrane by bl... | Wikipedia - Molecular Biologist | null | null | null |
Named the 19th best invention of 2008 by Time magazine, BIXI Montréal utilizes Robotics Design Inc.’s modular docking station. The BIXI-branded system, created by the Public Bike System Company, is solar powered and can be removed and replaced quickly allowing entire stations to be deployed or removed in minutes. The B... | Wikipedia - Robotics Design | null | null | null |
Nameplate capacity – Nanoengineering – Nanoinverter – Nanomotor – Nanotechnology – National electric code – National Electrical Manufacturers Association (NEMA) – Natural gas – Negative feedback – Negative resistance – Negawatt power – Nelson River Bipole – Neodymium magnets – Neon sign – Neon-sign transformer – Net me... | Wikipedia - Index of electrical engineering articles | null | null | null |
Naming alkanes per standards listed in the IUPAC Gold Book is done according to the Klyne–Prelog system for specifying angles (called either torsional or dihedral angles) between substituents around a single bond: a torsion angle between 0° and ± 90° is called syn (s) a torsion angle between ± 90° and 180° is called an... | Wikipedia - Linear alkane conformation | null | null | null |
Nancy Hingston, Periodic solutions of Hamilton's equations on tori Sergiu Klainerman, Null hypersurfaces and curvature estimates in general relativity Bruce Kleiner, Singular structure of mean curvature flow Frank Pacard, Blowing up Kähler manifolds with constant scalar curvature Rahul Pandharipande, A topological view... | Wikipedia - Geometry Festival | null | null | null |
Nandrolone (1) appears to be used to make mibolerone. For comparison, also see bolasterone and calusterone. The first step involves extending the conjugation of the enone function by an additional double bond. Chloranil (tetrachloroquinone) is the forerunner of dichlorodicyanoquinone (DDQ), a reagent used extensively f... | Wikipedia - Mibolerone | null | null | null |
In the case at hand, heating acetate (1) with chloranil gives the conjugated dienone (2), and reaction of that compound with methylmagnesium bromide in the presence of cuprous chloride leads to addition of the methyl group to position 7 at the end of the conjugated system (3). The stereochemistry of the product again i... | Wikipedia - Mibolerone | null | null | null |
Enamines are commonly used to activate adjacent functions; they are also not infrequently used, as in this case, as protecting groups. Thus, reaction of the intermediate with pyrrolidine gives dienamine (5). | Wikipedia - Mibolerone | null | null | null |
This transformation emphasizes the clear difference in reactivity between ketones at C7 and C17. A second methyl Grignard addition gives the corresponding 17α-methyl derivative. Hydrolysis of the enamine function then affords mibolerone (6). The same structure of 3 and 4 also containing an 11β-fluoro group has also bee... | Wikipedia - Mibolerone | null | null | null |
Nandrolone decanoate, or nandrolone 17β-decanoate, is a synthetic estrane steroid and a derivative of testosterone. It is an androgen ester; specifically, it is the C17β decylate (decanoate) ester of nandrolone (19-nortestosterone), which itself is the 19-demethylated analogue of testosterone. | Wikipedia - Nandrolone decanoate | null | null | null |
Nandrolone phenylpropionate, or nandrolone 17β-phenylpropionate, is a synthetic estrane steroid and a derivative of testosterone. It is an androgen ester; specifically, it is the C17β phenylpropionate ester of nandrolone (19-nortestosterone), which itself is the 19-demethylated analogue of testosterone. | Wikipedia - Nandrolone phenylpropionate | null | null | null |
Nano-FTIR has been used for investigation of protein secondary structure, bacterial membrane, detection and studies of single viruses and protein complexes. It has been applied to the detection of biominerals in bone tissue. Nano-FTIR, when coupled with THz light, can also be applied to cancer and burn imaging with hig... | Wikipedia - Nano-FTIR | null | null | null |
NanoSIMS can also be used to examine the elemental and isotopic composition of microparticles preserved in the rock record. The types of elements and isotopic ratios can help determine if the material is of biological origin. NanoSIMS was first used in this field of paleobiology in 2005 by Robert et al. In this study, ... | Wikipedia - Nanoscale secondary ion mass spectrometry | null | null | null |
NanoSIMS has also proved useful in studying cosmochemical issues, where samples of single, micro- or sub-micrometer-sized grains from meteorites as well as microtome sections prepared by the focused ion beam (FIB) technique can be analyzed. NanoSIMS can be combined with transmission electron microscopy (TEM) when using... | Wikipedia - Nanoscale secondary ion mass spectrometry | null | null | null |
Nanocellulose is sometimes iridescent, as are thin films of petrol and some other hydrocarbons and alcohols when floating on water. | Wikipedia - Pearlescent coatings | null | null | null |
Nanoclusters potentially have many areas of application as they have unique optical, electrical, magnetic and reactivity properties. Nanoclusters are biocompatible, ultrasmall, and exhibit bright emission, hence promising candidates for fluorescence bio imaging or cellular labeling. Nanoclusters along with fluorophores... | Wikipedia - Naked cluster | null | null | null |
They are able to detect copper and mercury ions in an aqueous solution based on fluorescence quenching. Also many small molecules, biological entities such as biomolecules, proteins, DNA, and RNA can be detected using nanoclusters. The unique reactivity properties and the ability to control the size and number of atoms... | Wikipedia - Naked cluster | null | null | null |
Nanocrystal displays would render as much as a 30% increase in the visible spectrum, while using 30 to 50% less power than LCDs, in large part because nanocrystal displays would not need backlighting. QD LEDs are 50–100 times brighter than CRT and LC displays, emitting 40,000 nits (cd/m2). QDs are dispersable in both a... | Wikipedia - Quantum dot display | null | null | null |
In addition to OLED displays, pick-and-place microLED displays are emerging as competing technologies to nanocrystal displays. Samsung has developed a method for making self-emissive quantum dot diodes with a lifetime of 1 million hours.Other advantages include better saturated green colors, manufacturability on polyme... | Wikipedia - Quantum dot display | null | null | null |
Since sunlight contains roughly equal luminosities of red, green and blue across the entire spectrum, a display also needs to produce roughly equal luminosities of red, green and blue to achieve pure white as defined by CIE Standard Illuminant D65. However, the blue component in the display can have relatively lower co... | Wikipedia - Quantum dot display | null | null | null |
Nanodiamonds can self-assemble and a wide range of small molecules, proteins antibodies, therapeutics, and nucleic acids can bind to its surface allowing for drug delivery, protein-mimicking, and surgical implants. Other potential biomedical applications are the use of nanodiamonds as support for solid-phase peptide sy... | Wikipedia - Nanochemistry | null | null | null |
Nanoelectrodes are tiny electrodes made of metals or semiconducting materials having typical dimensions of 1-100 nm. Various forms of nanoelectrodes have been developed taking advantage of the different possible fabrication techniques: among the most studied are the nanoband, disk, hemispherical, nanopore geometries as... | Wikipedia - Nanoelectrochemistry | null | null | null |
Nanoengineering -- Nanotechnology -- | Wikipedia - Index of chemical engineering articles | null | null | null |
Nanoengineering — Nano-scaffold — Nanotechnology — Neural engineering — Neurally controlled animat — Neuroengineering — Neuroprosthetics — Neurostimulator — Neurotechnology — | Wikipedia - Index of biomedical engineering articles | null | null | null |
Nanofactory Collaboration, founded by Robert Freitas and Ralph Merkle in 2000 and involving 23 researchers from 10 organizations and 4 countries, focuses on developing a practical research agenda specifically aimed at developing positionally-controlled diamond mechanosynthesis and a diamondoid nanofactory that would ha... | Wikipedia - Nanorobotics | null | null | null |
Nanofluidic diodes are utilized for rectification of ionic transport. A diode in electronic circuits limits the flow of electric current to one direction. A nanofluidic diode has the same function to restrict the ionic flow in one direction. A nanofluidic diode is a channel with its radius dimension of several nanomete... | Wikipedia - Nanofluidic circuitry | null | null | null |
The inner surface of the channel is coated with surface charges. Current rectification can occur when the surface charges at the wall are of the same sign. It is also observed that, when a half of the channel is coated with opposite sign or electrically neutral, the rectification will be enhanced. | Wikipedia - Nanofluidic circuitry | null | null | null |
When the wall of the channel is coated with positive charges, the negative charged ions in the electrolyte will be attracted and accumulated within the channel. In this case, the flow of positive charges passing through the channel is not favorable, resulting in a decrease in ionic current. Therefore, the ionic current... | Wikipedia - Nanofluidic circuitry | null | null | null |
Nanofuidic triode is a three-terminal double junction nanofluidic device composed of positive-charged alumina and negative-charged silica nanochannels. The device is essentially a three-terminal bipolar junction transistor. By controlling the voltage across emitter and collector terminals, one can regulate the ion curr... | Wikipedia - Nanofluidic transistor | null | null | null |
Nanoindentation is a standard and widely-accepted method for measuring mechanical properties within the crystal engineering field. The method quantifies hardness, elasticity, packing anisotropy, and polymorphism of a crystalline material. Hirshfeld surfaces are visual models of electron density at a specific isosurface... | Wikipedia - Crystal engineering | null | null | null |
Nanolithography is the technique to pattern materials and build devices under nano-scale. Nanolithography is often used together with thin-film-deposition, self-assembly, and self-organization techniques for various nanofabrications purpose. Many practical applications make use of nanolithography, including semiconduct... | Wikipedia - Nanochemistry | null | null | null |
There are three basic methods used by nanolithography. One involves using a resist material that acts as a "mask", known as photoresists, to cover and protect the areas of the surface that are intended to be smooth. The uncovered portions can now be etched away, with the protective material acting as a stencil. | Wikipedia - Nanochemistry | null | null | null |
The second method involves directly carving the desired pattern. Etching may involve using a beam of quantum particles, such as electrons or light, or chemical methods such as oxidation or Self-assembled monolayers. The third method places the desired pattern directly on the surface, producing a final product that is u... | Wikipedia - Nanochemistry | null | null | null |
Nanomaterials describe, in principle, materials of which a single unit is sized (in at least one dimension) between 1 and 1000 nanometers (10−9 meter), but is usually 1 nm – 100 nm. Nanomaterials research takes a materials science based approach to nanotechnology, using advances in materials metrology and synthesis, wh... | Wikipedia - Materials Engineering | null | null | null |
Nanomaterials have at least one primary dimension of less than 100 nanometers, and often have properties different from those of their bulk components that are technologically useful. Because nanotechnology is a recent development, the health and safety effects of exposures to nanomaterials, and what levels of exposure... | Wikipedia - Engineering controls for nanomaterials | null | null | null |
For example, stronger engineering controls are indicated if dry nanomaterials cannot be substituted with a suspension, or if procedures such as sonication or cutting of a solid matrix containing nanomaterials cannot be eliminated. : 9–11 As with any new technology, the earliest exposures are expected to occur among wor... | Wikipedia - Engineering controls for nanomaterials | null | null | null |
Nanomolecules can be created from virtually any element, but the majority produced in today's industry use carbon as the basis upon which the molecules are built around. Carbon can bond with nearly any element, allowing many possibilities when it comes to creating a specific molecule. Scientists can create thousands up... | Wikipedia - Nanoparticle–biomolecule conjugate | null | null | null |
In contrast with nanomolecules, the chemical components of nanoparticles usually consist of metals, such as iron, gold, silver, and platinum.Interactions between nanoparticles and molecules change depending on the nanoparticle's core. Nanoparticle properties depend not only on the composition of the core material, but ... | Wikipedia - Nanoparticle–biomolecule conjugate | null | null | null |
Metals contain inherent magnetic properties that allow for manipulation of molecular assembly. As nanoparticles interact with molecules via ligand properties, molecular assembly can be controlled by external magnetic fields interacting with magnetic properties in the nanoparticles. Significant problems with producing n... | Wikipedia - Nanoparticle–biomolecule conjugate | null | null | null |
Without the use of a stabilizing agent, nanoparticles tend to stick together once the stirring is stopped. In order to counteract this, a certain collidial stabilizer is generally added. These stabilizers bind to the nanoparticles in a way that prevents other particles from bonding with them. Some effective stabilizers... | Wikipedia - Nanoparticle–biomolecule conjugate | null | null | null |
Nanoparticles are desirable in today's industry for their high surface area-to-volume ratio in comparison with larger particles of the same elements. Because chemical reactions occur at a rate directly proportional to the available surface area of reactant compounds, nanoparticles can generate reactions at a much faste... | Wikipedia - Nanoparticle–biomolecule conjugate | null | null | null |
Nanoparticles are unique from macromolecules because their surface properties are dependent on their size, allowing for strategic manipulation of these properties (or, “programming”) by scientists that would not be possible otherwise. Likewise, nanoparticle shape can also be varied to give a different set of characteri... | Wikipedia - Nanoneuroscience | null | null | null |
Alzheimer’s disease results in toxic aggregates of the amyloid beta protein formed in the brain. In one study, gold nanoparticles were programmed to attach themselves to these aggregates and were successful in breaking them up. Likewise, with ischemic stroke models, cells in the affected region of the brain undergo apo... | Wikipedia - Nanoneuroscience | null | null | null |
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