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    Boron-doped diamond electrode: a modification-free platform for sensitive square-wave voltammetric determination of indapamide hydrochloride
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    Abstract:
    For the first time, a boron-doped diamond electrode was used to indapamide hydrochloride sensing.
    Keywords:
    Square wave
    Indapamide
    Hydrochloride
    TiAl bonded diamond composites were fabricated by self-propagation high-temperature reaction from Ti / Al / Diamond powders. Effects of different raw materials ratio and ignited temperature on bonding status between diamond and binders were studied. The samples were analyzed by XRD,SEM with EDS. The result showed that SHS reaction occurred if igniting at 700 ℃. TiAl phases were obtained by SHS. Meanwhile, the coating was formed on the surface of diamond. When the mass fraction of diamond was around 25 % with n( Ti) ∶ n( Al) = 3∶ 1,the coating was denser with the TiAl phase better developed.
    Mass fraction
    Self-propagating high-temperature synthesis
    Diamond cubic
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    Boron(B)element is often utilized to enhance mechanical properties of stainless steel due to its excellent performance. In this study, selective laser melting (SLM) was used to print 316L/B stainless steel with varying boron weight content. The effects of boron content on microstructure, nanoindentation, and mechanical properties of the printed 316L stainless steel were discussed. Fine cell dendrites and columnar crystals were found in the SLM printed stainless steel due to the rapid solidification in SLM. It was found that boron has a higher growth limiting factor in the iron system and the boron solute can provide a high component supercooling. By adding boron element to stainless steel during printing, the honeycomb and grain size after solidification are significantly reduced due to interactions between the boron element and the 316L.Tensile testing results show that the ultimate tensile strength of the SLM fabricated parts with 0.5wt% and 1wt% boron element addition can be increased significantly to 1071 MPa and 1174 MPa, respectively.
    Selective Laser Melting
    Supercooling
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    It is well known that PM stainless steels have lower corrosion resistance than the corresponding wrought steels, since they are affected by the presence of the open porosity. A way to obtain a surface densification is the addition of a small quantity of boron (from 0,3 to 0,5%wt.) to the stainless steel. The presence of boron produces a liquid phase phenomenon that results in a final microstructure consisting of a boron-rich phase network surrounding the stainless steels grains. Close to the surface, a boron-free layer was observed in which pores are very few, closed and round. This leads to an improvement in the steel corrosion resistance.
    Austenitic stainless steel
    Surface layer
    Liquid phase
    Abstract Die Überführung der methylierten Dithiaza‐ und Thiadiazadiborolidine (I) bzw. (III) in die Br‐Derivate (II) bzw. (IV) und (V) mit BBr 3 folgt dem endocyclischen Substitutionsmechanismus.
    Isotopes of boron
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    Stereoisomers of Salen-boron complexes with two equivalent stereogenic B-centers giving rise to diastereoisomers were assigned by CD and NMR spectra.
    Spectral Properties
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    Guanidine
    Hydrochloride
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    Бұл зерттеужұмысындaКaно моделітурaлы жәнеоғaн қaтыстытолықмәліметберілгенжәнеуниверситетстуденттерінебaғыттaлғaн қолдaнбaлы (кейстік)зерттеужүргізілген.АхметЯссaуи университетініңстуденттеріүшін Кaно моделіқолдaнылғaн, олaрдың жоғaры білімберусaпaсынa қоятынмaңыздытaлaптaры, яғнисaпaлық қaжеттіліктері,олaрдың мaңыздылығытурaлы жәнесaпaлық қaжеттіліктерінеқaтыстыөз университетінқaлaй бaғaлaйтындығытурaлы сұрaқтaр қойылғaн. Осы зерттеудіңмaқсaты АхметЯсaуи университетіндетуризмменеджментіжәнеқaржы бaкaлaвриaт бaғдaрлaмaлaрыныңсaпaсынa қaтыстыстуденттердіңқaжеттіліктерінaнықтaу, студенттердіңқaнaғaттaну, қaнaғaттaнбaу дәрежелерінбелгілеу,білімберусaпaсын aнықтaу мен жетілдіружолдaрын тaлдaу болыптaбылaды. Осы мaқсaтқaжетуүшін, ең aлдыменКaно сaуaлнaмaсы түзіліп,116 студенткеқолдaнылдыжәнебілімберугежәнеоның сaпaсынa қaтыстыстуденттердіңтaлaптaры мен қaжеттіліктерітоптықжұмыстaрaрқылыaнықтaлды. Екіншіден,бұл aнықтaлғaн тaлaптaр мен қaжеттіліктерКaно бaғaлaу кестесіменжіктелді.Осылaйшa, сaпa тaлaптaры төрт сaнaтқa бөлінді:болуытиіс, бір өлшемді,тaртымдыжәнебейтaрaп.Соңындa,қaнaғaттaну мен қaнaғaттaнбaудың мәндеріесептелдіжәнестуденттердіңқaнaғaттaну мен қaнaғaттaнбaу деңгейлерінжоғaрылaту мен төмендетудеосытaлaптaр мен қaжеттіліктердіңрөліaйқын aнықтaлды.Түйінсөздер:сaпa, сaпaлық қaжеттіліктер,білімберусaпaсы, Кaно моделі.
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