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Zero Carbon World is a British charity that promotes a net-zero emissions objective by supporting carbon reduction projects. It is a registered in England and Wales and also registered as a Limited liability company .
The objectives of the charity are: [ 1 ]
One way that Zero Carbon World aims to meet its objectives ... | https://en.wikipedia.org/wiki/Zero_Carbon_World |
Modified AMI codes are a digital telecommunications technique to maintain system synchronization . Alternate mark inversion (AMI) line codes are modified by deliberate insertion of bipolar violations . There are several types of modified AMI codes, used in various T-carrier and E-carrier systems.
The clock rate of an ... | https://en.wikipedia.org/wiki/Zero_code_suppression |
Zero differential overlap is an approximation in computational molecular orbital theory that is the central technique of semi-empirical methods in quantum chemistry . When computers were first used to calculate bonding in molecules, it was only possible to calculate diatomic molecules. As computers advanced, it became ... | https://en.wikipedia.org/wiki/Zero_differential_overlap |
In mathematics , zero dynamics is known as the concept of evaluating the effect of zero on systems. [ 1 ]
The idea was introduced thirty years ago as the nonlinear approach to the concept of transmission of zeros. The original purpose of introducing the concept was to develop an asymptotic stabilization with a set of ... | https://en.wikipedia.org/wiki/Zero_dynamics |
Zero- to ultralow-field ( ZULF ) NMR is the acquisition of nuclear magnetic resonance (NMR) spectra of chemicals with magnetically active nuclei ( spins 1/2 and greater) in an environment carefully screened from magnetic fields (including from the Earth's field ). ZULF NMR experiments typically involve the use of passi... | https://en.wikipedia.org/wiki/Zero_field_NMR |
The zero flag is a single bit flag that is a central feature on most conventional CPU architectures (including x86 , ARM , PDP-11 , 68000 , 6502 , and numerous others). It is often stored in a dedicated register, typically called status register or flag register , along with other flags. The zero flag is typically abbr... | https://en.wikipedia.org/wiki/Zero_flag |
Zero Liquid Discharge (ZLD) is a classification of water treatment processes intended to reduce wastewater efficiently and produce clean water that is suitable for reuse (e.g., irrigation ). ZLD systems employ wastewater treatment technologies and desalination to purify and recycle virtually all wastewater received. [ ... | https://en.wikipedia.org/wiki/Zero_liquid_discharge |
In physics , a zero mode is an eigenvector with a vanishing eigenvalue . [ 1 ]
In various subfields of physics zero modes appear whenever a physical system possesses a certain symmetry. For example, normal modes of multidimensional harmonic oscillator (e.g. a system of beads arranged around the circle, connected with ... | https://en.wikipedia.org/wiki/Zero_mode |
In algebra , the zero object of a given algebraic structure is, in the sense explained below, the simplest object of such structure. As a set it is a singleton , and as a magma has a trivial structure, which is also an abelian group . The aforementioned abelian group structure is usually identified as addition , and th... | https://en.wikipedia.org/wiki/Zero_object_(algebra) |
In mathematics , a zero (also sometimes called a root ) of a real -, complex -, or generally vector-valued function f {\displaystyle f} , is a member x {\displaystyle x} of the domain of f {\displaystyle f} such that f ( x ) {\displaystyle f(x)} vanishes at x {\displaystyle x} ; that is, the function f {\displaystyle f... | https://en.wikipedia.org/wiki/Zero_of_a_function |
A zero register is a processor register that always returns the value zero and has no effect when it is written to. It is found in instruction set architectures including the CDC 6600 , System/360 and ARM64 , among others.
Zero appears as a constant in many instructions, notably "branch if zero", and optimizing these ... | https://en.wikipedia.org/wiki/Zero_register |
Zero sound is the name given by Lev Landau in 1957 to the unique quantum vibrations in quantum Fermi liquids . [ 1 ] The zero sound can no longer be thought of as a simple wave of compression and rarefaction, but rather a fluctuation in space and time of the quasiparticles ' momentum distribution function. As the shape... | https://en.wikipedia.org/wiki/Zero_sound |
In interferometry , the zero spacing flux (ZSF) refers to the estimated integrated flux density within the field of view of an interferometer that would be measured by a (potentially hypothetical) single-dish telescope possessing the same primary beam as the interferometer. This value does not represent a direct measur... | https://en.wikipedia.org/wiki/Zero_spacing_flux |
In electrical circuit theory, the zero state response ( ZSR ) is the behaviour or response of a circuit with initial state of zero. The ZSR results only from the external inputs or driving functions of the circuit and not from the initial state.
The total response of the circuit is the superposition of the ZSR and th... | https://en.wikipedia.org/wiki/Zero_state_response |
Zero suppression is the removal of redundant zeroes from a number. This can be done for storage, page or display space constraints or formatting reasons, such as making a letter more legible. [ 1 ] [ 2 ] [ 3 ]
One must be careful; in physics and related disciplines, trailing zeros are used to indicate the precision of... | https://en.wikipedia.org/wiki/Zero_suppression |
Zero trust architecture ( ZTA ) or perimeterless security is a design and implementation strategy of IT systems . The principle is that users and devices should not be trusted by default, even if they are connected to a privileged network such as a corporate LAN and even if they were previously verified.
ZTA is implem... | https://en.wikipedia.org/wiki/Zero_trust_architecture |
In computer security , the Zeroday Emergency Response Team ( ZERT ) was a group of volunteer security researchers who produced emergency patches for zero day attack vulnerabilities in proprietary software . They came to public notice in late September 2006 with a patch for that month's Vector Markup Language vulnerabil... | https://en.wikipedia.org/wiki/Zeroday_Emergency_Response_Team |
Zerodium is an American information security company. The company was founded in 2015 with operations in Washington, D.C. , and Europe . The company develops and acquires zero-day exploits from security researchers.
Zerodium was launched on July 25, 2015 by the founders of Vupen . The company pays bounties for zero-da... | https://en.wikipedia.org/wiki/Zerodium |
Zerologon (formally: CVE - 2020-1472 ) is a privilege elevation vulnerability in Microsoft 's authentication protocol Netlogon Remote Protocol (MS-NRPC) , as implemented in the Windows Client Authentication Architecture and Samba . [ 2 ] The vulnerability was first reported to Microsoft by security researcher Tom Tervo... | https://en.wikipedia.org/wiki/Zerologon |
Zerovalent iron (ZVI) is jargon [ clarification needed ] that describes forms of iron metal that are proposed for use in groundwater remediation . [ 1 ] [ 2 ] [ 3 ] [ 4 ]
ZVI operates by electron transfer from Fe 0 toward some organochlorine compounds, a common class of pollutants. The remediation process is proposed... | https://en.wikipedia.org/wiki/Zerovalent_iron |
ZetaGrid was at one time the largest distributed computing project, designed to explore the non-trivial roots of the Riemann zeta function , checking over one billion roots a day.
Roots of the zeta function are of particular interest in mathematics ; a single root out of alignment would disprove the Riemann hypothesis... | https://en.wikipedia.org/wiki/ZetaGrid |
In mathematics and theoretical physics , zeta function regularization is a type of regularization or summability method that assigns finite values to divergent sums or products, and in particular can be used to define determinants and traces of some self-adjoint operators . The technique is now commonly applied to prob... | https://en.wikipedia.org/wiki/Zeta_function_regularization |
Zeta potential titration is a titration of heterogeneous systems, for example colloids and emulsions . Solids in such systems have very high surface area . This type of titration is used to study the zeta potential of these surfaces under different conditions. Details of zeta potential definition and measuring techniqu... | https://en.wikipedia.org/wiki/Zeta_potential_titration |
The byte is a unit of digital information that most commonly consists of eight bits . Historically, the byte was the number of bits used to encode a single character of text in a computer [ 1 ] [ 2 ] and for this reason it is the smallest addressable unit of memory in many computer architectures . To disambiguate arbit... | https://en.wikipedia.org/wiki/Zettabyte |
Zettascale computing refers to computing systems capable of calculating at least "10 21 IEEE 754 Double Precision (64-bit) operations (multiplications and/or additions) per second ( zetta FLOPS )". [ 1 ] It is a measure of supercomputer performance, and as of July 2022 [update] is a hypothetical performance barrier. [ ... | https://en.wikipedia.org/wiki/Zettascale_computing |
Zhao Jincai ( Chinese : 赵进才 ; born December 1960) is a Chinese environmental chemist and researcher of the Institute of Chemistry of the Chinese Academy of Sciences . In April 1994, he obtained a doctorate from Meisei University in Japan. [ 1 ] In 2011 he was elected as an academician of CAS. He is a professor at the I... | https://en.wikipedia.org/wiki/Zhao_Jincai |
Zhenghan Wang ( Chinese : 王正汉 ; born April 26, 1965) is a Chinese-American mathematician . He is a principal researcher at Microsoft Station Q , as well as a professor of mathematics at the University of California, Santa Barbara .
Wang graduated with a B.S. and M.S. from the University of Science and Technology of C... | https://en.wikipedia.org/wiki/Zhenghan_Wang |
Zhong Zhong ( Chinese : 中中 ; pinyin : Zhōng Zhōng , born 27 November 2017) and Hua Hua ( Chinese : 华华 ; pinyin : Huá Huá , born 5 December 2017) are a pair of identical crab-eating macaques (also referred to as cynomolgus monkeys) that were created through somatic cell nuclear transfer (SCNT), the same cloning techniqu... | https://en.wikipedia.org/wiki/Zhong_Zhong_and_Hua_Hua |
Zhongma Fortress ( Chinese : 中馬城) — also Zhong Ma Prison Camp or Unit Tōgō — was a prison camp where the Japanese Kwantung Army carried out covert biological warfare research on human test subjects. Built in Beiyinhe , outside of Harbin , Manchukuo during the Second Sino-Japanese War , the camp served as a center for h... | https://en.wikipedia.org/wiki/Zhongma_Fortress |
In organic chemistry , the Ziegler process (also called the Ziegler-Alfol synthesis) is a method for producing fatty alcohols from ethylene using an organoaluminium compound . The reaction produces linear primary alcohols with an even numbered carbon chain. The process uses an aluminum compound to oligomerize ethylene ... | https://en.wikipedia.org/wiki/Ziegler_process |
A Ziegler–Natta catalyst , named after Karl Ziegler and Giulio Natta , is a catalyst used in the synthesis of polymers of 1-alkenes ( alpha-olefins ). Two broad classes of Ziegler–Natta catalysts are employed, distinguished by their solubility:
Ziegler–Natta catalysts are used to polymerize terminal alkenes (ethylene ... | https://en.wikipedia.org/wiki/Ziegler–Natta_catalyst |
The Ziff–Gulari–Barshad (ZGB) model is a simple Monte Carlo method for catalytic reactions of oxidation of carbon monoxide to carbon dioxide on a surface using Monte-Carlo methods which captures correctly the essential dynamics: phase transitions between two poisoned states (either CO 2 - or O-poisoned) and a steady-st... | https://en.wikipedia.org/wiki/Ziff–Gulari–Barshad_model |
A zigzag is a pattern made up of small corners at variable angles, though constant within the zigzag, tracing a path between two parallel lines ; it can be described as both jagged and fairly regular.
In geometry , this pattern is described as a skew apeirogon . From the point of view of symmetry , a regular zigzag ca... | https://en.wikipedia.org/wiki/Zigzag |
In coding theory , a zigzag code is a type of linear error-correcting code introduced by Ping, Huang & Phamdo (2001) . [ 1 ] They are defined by partitioning the input data into segments of fixed size, and adding sequence of check bits to the data, where each check bit is the exclusive or of the bits in a single segmen... | https://en.wikipedia.org/wiki/Zigzag_code |
Zīj as-Sindhind ( Arabic : زيج السندهند الكبير , Zīj as‐Sindhind al‐kabīr , lit. "Great astronomical tables of the Sindhind"; from Sanskrit siddhānta , "system" or "treatise") is a work of zij (astronomical handbook with tables used to calculate celestial positions) brought in the early 770s AD to the court of Caliph a... | https://en.wikipedia.org/wiki/Zij_as-Sindhind |
In physics , zilch (or zilches) is a set of ten conserved quantities of the source-free electromagnetic field , which were discovered by Daniel M. Lipkin in 1964. [ 1 ] The name refers to the fact that the zilches are only conserved in regions free of electric charge , and therefore have limited physical significance. ... | https://en.wikipedia.org/wiki/Zilch_(electromagnetism) |
The Zimbabwe Institution of Engineers is the professional organization of engineers in Zimbabwe . It has graded membership, including student, technician, graduate and corporate membership as well as the status of fellow. [ 1 ]
This article about an organization in Zimbabwe is a stub . You can help Wikipedia by expand... | https://en.wikipedia.org/wiki/Zimbabwe_Institution_of_Engineers |
Zimbra Collaboration , formerly known as the Zimbra Collaboration Suite ( ZCS ) before 2019, is a collaborative software suite that includes an email server and a web client.
Zimbra was initially developed by LiquidSys, which changed their name to Zimbra, Inc. on 26 July 2005. [ 2 ] The Zimbra Collaboration Suite was ... | https://en.wikipedia.org/wiki/Zimbra |
Zimmer's conjecture is a statement in mathematics "which has to do with the circumstances under which geometric spaces exhibit certain kinds of symmetries ." [ 1 ] It was named after the mathematician Robert Zimmer . The conjecture states that there can exist symmetries (specifically higher-rank lattices ) in a higher... | https://en.wikipedia.org/wiki/Zimmer's_conjecture |
Zimmerit was a paste-like coating used on mid- and late-war German armored fighting vehicles during World War II . It was used to produce a hard layer covering the metal armor of the vehicle, providing enough separation that magnetically attached anti-tank mines would fail to stick to the vehicle, despite Germany being... | https://en.wikipedia.org/wiki/Zimmerit |
The Zimmermann reagent is used as a simple spot-test used in chromatography to presumptively identify alkaloids , especially benzodiazepines , as well as other compounds. It is therefore used in drugs testing. [ 1 ] [ 2 ] [ 3 ]
It is a two-component reagent, with the first component composed of 1,3-dinitrobenzene (1% ... | https://en.wikipedia.org/wiki/Zimmermann_reagent |
In statistical mechanics , the Zimm–Bragg model is a helix-coil transition model that describes helix-coil transitions of macromolecules , usually polymer chains. Most models provide a reasonable approximation of the fractional helicity of a given polypeptide ; the Zimm–Bragg model differs by incorporating the ease of ... | https://en.wikipedia.org/wiki/Zimm–Bragg_model |
The Zinagizado is an electrochemical process to provide a ferrous metal material with anti- corrosive properties. [ 1 ] It involves the application of a constant electric current through a circuit to break the bonds and these are attached to the metal to be coated by forming a surface coating . [ 2 ] The alloy used is ... | https://en.wikipedia.org/wiki/Zinagizado |
Zinc-finger nucleases ( ZFNs ) are artificial restriction enzymes generated by fusing a zinc finger DNA-binding domain to a DNA-cleavage domain . Zinc finger domains can be engineered to target specific desired DNA sequences and this enables zinc-finger nucleases to target unique sequences within complex genomes . By... | https://en.wikipedia.org/wiki/Zinc-finger_nuclease |
Zinc amalgam is a solution of zinc in mercury. In practice the term refers to particles of zinc with a surface coating of the amalgam . A gray solid, it is typically used for reduction . It is written as Zn(Hg) in reactions. [ 1 ] It is usually prepared by treating an aqueous suspension of zinc with mercuric chloride ... | https://en.wikipedia.org/wiki/Zinc_amalgam |
Zinc azide Zn(N 3 ) 2 is an inorganic compound composed of zinc cations ( Zn 2+ ) and azide anions ( N − 3 ). It is a white, explosive solid that can be prepared by the protonolysis of diethylzinc with hydrazoic acid : [ 1 ]
Zinc azide is a coordination polymer which crystallizes in three polymorphs , all of which fea... | https://en.wikipedia.org/wiki/Zinc_azide |
Zinc chloride is an inorganic chemical compound with the formula ZnCl 2 · n H 2 O, with n ranging from 0 to 4.5, forming hydrates . Zinc chloride, anhydrous and its hydrates, are colorless or white crystalline solids, and are highly soluble in water . Five hydrates of zinc chloride are known, as well as four polymorphs... | https://en.wikipedia.org/wiki/Zinc_chloride |
Zinc hydride is an inorganic compound with the chemical formula Zn H 2 . It is a white, odourless solid which slowly decomposes into its elements at room temperature; despite this it is the most stable of the binary first row transition metal hydrides . A variety of coordination compounds containing Zn–H bonds are used... | https://en.wikipedia.org/wiki/Zinc_hydride |
Zinc is an essential trace element for humans [ 1 ] [ 2 ] [ 3 ] and other animals, [ 4 ] for plants [ 5 ] and for microorganisms . [ 6 ] Zinc is required for the function of over 300 enzymes and 1000 transcription factors , [ 3 ] and is stored and transferred in metallothioneins . [ 7 ] [ 8 ] It is the second most abun... | https://en.wikipedia.org/wiki/Zinc_in_biology |
Zinc perchlorate is the inorganic compound with the chemical formula Zn(ClO 4 ) 2 which forms the hexahydrate. [ 1 ] [ 2 ]
Zinc perchlorate can be prepared by dissolving zinc oxide or zinc carbonate in perchloric acid : [ 3 ]
The compound decomposes when heated to high temperatures and may explode if heated too stro... | https://en.wikipedia.org/wiki/Zinc_perchlorate |
Zinc peroxide (ZnO 2 ) is a chemical compound of zinc that appears as a bright yellow powder at room temperature. It was historically used as a surgical antiseptic . More recently zinc peroxide has also been used as an oxidant in explosives and pyrotechnic mixtures. Its properties have been described as a transition be... | https://en.wikipedia.org/wiki/Zinc_peroxide |
Zinc pest (from German Zinkpest "zinc plague"), also known as zinc rot , mazak rot and zamak rot , is a destructive, intercrystalline corrosion process of zinc alloys containing lead impurities. [ 1 ] While impurities of the alloy are the primary cause of the problem, environmental conditions such as high humidity (gre... | https://en.wikipedia.org/wiki/Zinc_pest |
Zinc refining is the process of purifying zinc to special high grade (SHG) zinc, which is at least 99.995% pure. [ 1 ] This process is not usually required when smelting of zinc is done through electrolysis processes, but is needed when zinc is produced by pyrometallurgical processes, because it is only 98.5% pure.
Th... | https://en.wikipedia.org/wiki/Zinc_refining |
Zinc smelting is the process of converting zinc concentrates ( ores that contain zinc) into pure zinc. Zinc smelting has historically been more difficult than the smelting of other metals, e.g. iron , because in contrast, zinc has a low boiling point . At temperatures typically used for smelting metals, zinc is a gas ... | https://en.wikipedia.org/wiki/Zinc_smelting |
2.3.3 European Community (EC) Number
215-251-3.html 8009652
2.3.3 European Community (EC) Number
Zinc sulfide (or zinc sulphide ) is an inorganic compound with the chemical formula of ZnS. This is the main form of zinc found in nature, where it mainly occurs as the mineral sphalerite . Although this mineral is usually... | https://en.wikipedia.org/wiki/Zinc_sulfide |
The Zincke nitration is a nitration reaction in which a bromine is replaced by a nitro group on an electron-rich aryl compound such as a phenol or cresol . Typical reagents are nitrous acid or sodium nitrite . The reaction is a manifestation of nucleophilic aromatic substitution and is named after Theodor Zincke , who ... | https://en.wikipedia.org/wiki/Zincke_nitration |
The Zincke reaction is an organic reaction , named after Theodor Zincke , in which a pyridine is transformed into a pyridinium salt by reaction with 2,4-dinitro-chlorobenzene and a primary amine . [ 1 ] [ 2 ] [ 3 ] [ 4 ]
The Zincke reaction should not be confused with the Zincke-Suhl reaction or the Zincke nitration .... | https://en.wikipedia.org/wiki/Zincke_reaction |
The Zincke–Suhl reaction is a special case of a Friedel-Crafts alkylation and was first described by Theodor Zincke and Suhl in 1906. [ 1 ] [ 2 ] [ 3 ] Unlike the traditional Friedel-Crafts reaction, the reduction of the phenyl ring leads to a higher energy final product that can be used as starting material in the die... | https://en.wikipedia.org/wiki/Zincke–Suhl_reaction |
Zinc–copper couple is an alloy of zinc and copper that is employed as a reagent in organic synthesis . The “couple” was popularized after the report by Simmons and Smith, published in 1959, on its application as an activated source of zinc required for formation of an organozinc reagent in the Simmons–Smith cyclopropa... | https://en.wikipedia.org/wiki/Zinc–copper_couple |
For chemical reactions , the zinc–zinc oxide cycle or Zn–ZnO cycle is a two step thermochemical cycle based on zinc and zinc oxide [ 1 ] for hydrogen production [ 2 ] with a typical efficiency around 40%. [ 3 ]
The thermochemical two-step water splitting process uses redox systems: [ 4 ]
For the first endothermic ste... | https://en.wikipedia.org/wiki/Zinc–zinc_oxide_cycle |
Zineb is the chemical compound with the formula {Zn[S 2 CN(H)CH 2 CH 2 N(H)CS 2 ]} n . Structurally, it is classified as a coordination polymer and a dithiocarbamate complex . This pale yellow solid is used as fungicide . [ 2 ]
It is produced by treating ethylene bis(dithiocarbamate) sodium salt, "nabam", with zinc su... | https://en.wikipedia.org/wiki/Zineb |
Zinin reaction or Zinin reduction involves reduction of nitro aromatic compounds to the amines using sodium sulfide . [ 1 ] It is used to convert nitrobenzenes to anilines . [ 2 ] [ 3 ] The reaction selectively reduces nitro groups in the presence of other easily reduced functional groups (e.g., aryl halides and C=C bo... | https://en.wikipedia.org/wiki/Zinin_reaction |
Zinovy Reichstein (born 1961) is a Russian-born American mathematician . He is a professor at the University of British Columbia in Vancouver .
He studies mainly algebra , algebraic geometry and algebraic groups . He introduced (with Joe P. Buhler ) the concept of essential dimension . [ 1 ]
In high school, Reichstein... | https://en.wikipedia.org/wiki/Zinovy_Reichstein |
In chemistry , a Zintl phase is a product of a reaction between a group 1 ( alkali metal ) or group 2 ( alkaline earth metal ) and main group metal or metalloid (from groups 13, 14, 15, or 16). It is characterized by intermediate metallic / ionic bonding. Zintl phases are a subgroup of brittle , high-melting intermetal... | https://en.wikipedia.org/wiki/Zintl_phase |
Zion Tse is a professor in robotics, and the director of Centre for Bioengineering at the School of Engineering and Materials Science , Queen Mary, University of London . [ 1 ]
Tse received his Ph.D degree in mechatronics in medicine from Imperial College London in England. [ 2 ] [ 3 ] He then received training and wo... | https://en.wikipedia.org/wiki/Zion_Tse |
ZipcodeZoo was a free, online encyclopedia intended to document all living species and infraspecies known to science. It was compiled from existing databases. It offered one page for each living species, supplementing text with video, sound, and images where available. ZipcodeZoo was integrated into an app called Look... | https://en.wikipedia.org/wiki/ZipcodeZoo |
The Zippe-type centrifuge is a gas centrifuge designed to enrich the rare fissile isotope uranium-235 ( 235 U) from the mixture of isotopes found in naturally occurring uranium compounds. The isotopic separation is based on the slight difference in mass of the isotopes. The Zippe design was originally developed in the ... | https://en.wikipedia.org/wiki/Zippe-type_centrifuge |
Zirconium silicon sulfide ( ZrSiS ) is a crystalline layered Dirac semi-metal compound of zirconium , silicon and sulfur . [ 1 ] Its crystals are made from planes of five single-atom layers of each element in the order S-Zr-Si-Zr-S, with the single element planes connected to their neighbors by van der Waals forces . [... | https://en.wikipedia.org/wiki/Zirconium_silicon_sulfide |
Zirconocene is a hypothetical compound with 14 valence electrons , which has not been observed or isolated. It is an organometallic compound consisting of two cyclopentadienyl rings bound on a central zirconium atom. A crucial question in research is what kind of ligands can be used to stabilize the Cp 2 Zr II metalloc... | https://en.wikipedia.org/wiki/Zirconocene |
Zircotec is a high temperature coating and heat barrier manufacturer, based in Abingdon near Oxford , England . It uses plasma-sprayed ceramic materials to provide thermal and abrasive resistance to components – with a focus on automotive exhaust systems . Its best-known products include coloured thermal barrier coatin... | https://en.wikipedia.org/wiki/Zircotec |
The Zisman plot the graphical method of the Zisman theory or the Zisman method for characterizing the wettability of a solid surface [1] , named for the American chemist and geophysicist, William Albert Zisman (1905–1986). It is a prominent Sessile drop technique used for characterizing liquid-surface interactions bas... | https://en.wikipedia.org/wiki/Zisman_Plot |
Živojin Jocić (1870–1914) was a Serbian organic chemist . The eponymous Jocic reaction (also called the Jocic–Reeve reaction) is a name reaction that involves nucleophilic displacement of the hydroxyl group in a 1,1,1-trichloro-2-hydroxyalkyl structure with concomitant conversion of the trichloromethyl portion to a car... | https://en.wikipedia.org/wiki/Zivojin_Jocic |
Zlatko Boško Tešanović (August 1, 1956 – July 26, 2012) was a Yugoslav-American theoretical condensed-matter physicist , whose work focused mainly on the high-temperature superconductors (HTS) and related materials.
His particular research interests were in the areas of theoretical condensed matter physics, revolving ... | https://en.wikipedia.org/wiki/Zlatko_Tesanovic |
Zinc acetate is a salt with the formula Zn(CH 3 CO 2 ) 2 , which commonly occurs as the dihydrate Zn(CH 3 CO 2 ) 2 ·2H 2 O. Both the hydrate and the anhydrous forms are colorless solids that are used as dietary supplements. When used as a food additive , it has the E number E650.
Zinc acetate is a component of some me... | https://en.wikipedia.org/wiki/Zn(CH3COO)2 |
Zinc chlorate ( Zn ( Cl O 3 ) 2 ) is an inorganic chemical compound .
This inorganic compound –related article is a stub . You can help Wikipedia by expanding it . | https://en.wikipedia.org/wiki/Zn(ClO3)2 |
Zinc azide Zn(N 3 ) 2 is an inorganic compound composed of zinc cations ( Zn 2+ ) and azide anions ( N − 3 ). It is a white, explosive solid that can be prepared by the protonolysis of diethylzinc with hydrazoic acid : [ 1 ]
Zinc azide is a coordination polymer which crystallizes in three polymorphs , all of which fea... | https://en.wikipedia.org/wiki/Zn(N3)2 |
Zinc nitrate is an inorganic chemical compound with the formula Zn(NO 3 ) 2 . This colorless, crystalline salt is highly deliquescent . It is typically encountered as a hexahydrate Zn(NO 3 ) 2 ·6H 2 O . It is soluble in both water and alcohol.
Zinc nitrate is usually prepared by dissolving zinc metal, zinc oxide , or ... | https://en.wikipedia.org/wiki/Zn(NO3)2 |
Zinc acetate is a salt with the formula Zn(CH 3 CO 2 ) 2 , which commonly occurs as the dihydrate Zn(CH 3 CO 2 ) 2 ·2H 2 O. Both the hydrate and the anhydrous forms are colorless solids that are used as dietary supplements. When used as a food additive , it has the E number E650.
Zinc acetate is a component of some me... | https://en.wikipedia.org/wiki/Zn(O2CCH3)2(H2O)2 |
Brianyoungite is a secondary zinc carbonate mineral . The Commission on New Minerals, Nomenclature and Classification (CNMNC) of the International Mineralogical Association (IMA) classifies it as a carbonate with the formula Zn 3 (CO 3 )(OH) 4 , [ 1 ] but sulfate groups SO 4 also occupy the carbonate CO 3 positions, in... | https://en.wikipedia.org/wiki/Zn3(CO3)(OH)4 |
Brianyoungite is a secondary zinc carbonate mineral . The Commission on New Minerals, Nomenclature and Classification (CNMNC) of the International Mineralogical Association (IMA) classifies it as a carbonate with the formula Zn 3 (CO 3 )(OH) 4 , [ 1 ] but sulfate groups SO 4 also occupy the carbonate CO 3 positions, in... | https://en.wikipedia.org/wiki/Zn3(CO3,SO4)(OH)4 |
Zinc phosphate is an inorganic compound with the formula Zn 3 ( PO 4 ) 2 . This white powder is widely used as a corrosion resistant coating on metal surfaces either as part of an electroplating process or applied as a primer pigment (see also red lead ). It has largely displaced toxic materials based on lead or chrom... | https://en.wikipedia.org/wiki/Zn3(PO4)2 |
Zinc nitride ( Zn 3 N 2 ) is an inorganic compound of zinc and nitrogen , usually obtained as (blue)grey crystals. It is a semiconductor. In pure form, it has the anti- bixbyite structure.
Zinc nitride can be obtained by thermally decomposing zincamide (zinc diamine) [ 3 ] in an anaerobic environment, at temperatures ... | https://en.wikipedia.org/wiki/Zn3N2 |
Zinc phosphide ( Zn 3 P 2 ) is an inorganic chemical compound . It is a grey solid, although commercial samples are often dark or even black. It is used as a rodenticide . [ 5 ] Zn 3 P 2 is a II-V semiconductor with a direct band gap of 1.5 eV [ 6 ] and may have applications in photovoltaic cells . [ 7 ] A second compo... | https://en.wikipedia.org/wiki/Zn3P2 |
Zinc bromide ( Zn Br 2 ) is an inorganic compound with the chemical formula Zn Br 2 . It is a colourless salt that shares many properties with zinc chloride (ZnCl 2 ), namely a high solubility in water forming acidic solutions, and good solubility in organic solvents. It is hygroscopic and forms a dihydrate ZnBr 2 ·2H... | https://en.wikipedia.org/wiki/ZnBr2 |
Zinc chloride is an inorganic chemical compound with the formula ZnCl 2 · n H 2 O, with n ranging from 0 to 4.5, forming hydrates . Zinc chloride, anhydrous and its hydrates, are colorless or white crystalline solids, and are highly soluble in water . Five hydrates of zinc chloride are known, as well as four polymorphs... | https://en.wikipedia.org/wiki/ZnCl2 |
Zinc chromate , Zn Cr O 4 , is a chemical compound , a salt containing the chromate anion , appearing as odorless yellow powder or yellow-green crystals, but, when used for coatings, pigments are often added. [ 2 ] [ 3 ] [ 4 ] It is used industrially in chromate conversion coatings , having been developed by the Ford M... | https://en.wikipedia.org/wiki/ZnCrO4 |
Zinc fluoride is an inorganic chemical compound with the chemical formula Zn F 2 . It is encountered as the anhydrous form and also as the tetrahydrate , ZnF 2 ·4H 2 O (rhombohedral crystal structure). [ 2 ] It has a high melting point and has the rutile structure containing 6 coordinate zinc, which suggests appreciabl... | https://en.wikipedia.org/wiki/ZnF2 |
Zinc hydride is an inorganic compound with the chemical formula Zn H 2 . It is a white, odourless solid which slowly decomposes into its elements at room temperature; despite this it is the most stable of the binary first row transition metal hydrides . A variety of coordination compounds containing Zn–H bonds are used... | https://en.wikipedia.org/wiki/ZnH2 |
Zinc iodide is the inorganic compound with the formula ZnI 2 . It exists both in anhydrous form and as a dihydrate. Both are white and readily absorb water from the atmosphere. It has no major application.
It can be prepared by the direct reaction of zinc and iodine in water [ 1 ] [ 2 ] or refluxing ether : [ 3 ]
Ab... | https://en.wikipedia.org/wiki/ZnI2 |
Zinc molybdate is an inorganic compound with the formula Zn MoO 4 . It is used as a white pigment , which is also a corrosion inhibitor . A related pigment is sodium zinc molybdate, Na 2 Zn(MoO 4 ) 2 . [ 4 ] The material has also been investigated as an electrode material. [ 5 ]
In terms of its structure, the Mo(VI) ... | https://en.wikipedia.org/wiki/ZnMoO4 |
Fume: TWA 5 mg/m 3 ST 10 mg/m 3 [ 2 ]
Zinc oxide is an inorganic compound with the formula Zn O . It is a white powder which is insoluble in water. ZnO is used as an additive in numerous materials and products including cosmetics, food supplements , rubbers, plastics, ceramics, glass, cement, lubricants, [ 12 ] paints... | https://en.wikipedia.org/wiki/ZnO |
Zinc peroxide (ZnO 2 ) is a chemical compound of zinc that appears as a bright yellow powder at room temperature. It was historically used as a surgical antiseptic . More recently zinc peroxide has also been used as an oxidant in explosives and pyrotechnic mixtures. Its properties have been described as a transition be... | https://en.wikipedia.org/wiki/ZnO2 |
Zinc sulfate is an inorganic compound with the formula ZnSO 4 . It forms hydrates ZnSO 4 · n H 2 O, where n can range from 0 to 7. All are colorless solids. The most common form includes water of crystallization as the heptahydrate, [ 4 ] with the formula Zn SO 4 ·7H 2 O . As early as the 16th century it was prepared o... | https://en.wikipedia.org/wiki/ZnSO4 |
Zinc telluride is a binary chemical compound with the formula ZnTe. This solid is a semiconductor material with a direct band gap of 2.26 eV . [ 2 ] It is usually a p-type semiconductor . Its crystal structure is cubic , like that for sphalerite and diamond . [ 1 ]
ZnTe has the appearance of grey or brownish-red powde... | https://en.wikipedia.org/wiki/ZnTe |
The zodi is a unit of zodiacal dust . [ 1 ] One zodi is the amount of zodiacal dust in the inner Solar System . [ 2 ] This dust absorbs light from the Sun and re-radiates it as thermal radiation . The luminosity of the zodiacal dust in the Solar System is about 10 − 7 {\displaystyle 10^{-7}} relative to the luminosity ... | https://en.wikipedia.org/wiki/Zodi |
The zodiacal light (also called false dawn [ 2 ] [ 3 ] [ 4 ] [ 5 ] when seen before sunrise ) is a faint glow of diffuse sunlight scattered by interplanetary dust . Brighter around the Sun , it appears in a particularly dark night sky to extend from the Sun's direction in a roughly triangular shape along the zodiac , a... | https://en.wikipedia.org/wiki/Zodiacal_light |
Zofenopril ( INN ) is a medication that protects the heart and helps reduce high blood pressure . It is an angiotensin-converting enzyme (ACE) inhibitor . [ 1 ]
In small studies, zofenopril appeared significantly more effective in reducing hypertension than two older antihypertensive drugs , atenolol and enalapril , a... | https://en.wikipedia.org/wiki/Zofenopril |
Zoghman Mebkhout (born 1949 [ 1 ] ) (زغمان مبخوت) is a French - Algerian mathematician. He is known for his work in algebraic analysis , geometry and representation theory , more precisely on the theory of D -modules .
Mebkhout is currently a research director at the French National Centre for Scientific Research [ 2 ... | https://en.wikipedia.org/wiki/Zoghman_Mebkhout |
In mathematics, particularly in differential geometry , a Zoll surface , named after Otto Zoll , is a surface homeomorphic to the 2-sphere , equipped with a Riemannian metric all of whose geodesics are closed and of equal length. While the usual unit-sphere metric on S 2 obviously has this property, it also has an inf... | https://en.wikipedia.org/wiki/Zoll_surface |
In number theory , Zolotarev's lemma states that the Legendre symbol
for an integer a modulo an odd prime number p , where p does not divide a , can be computed as the sign of a permutation:
where ε denotes the signature of a permutation and π a is the permutation of the nonzero residue classes mod p induced by multi... | https://en.wikipedia.org/wiki/Zolotarev's_lemma |
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