In thiswork,the perovskite LaZnO_(3) was synthesized via sol-gel method and applied for photocatalytic treatment of sulfamethizole(SMZ)antibiotics under visible light *** was almost completely degraded(99.2%±0.3%...
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In thiswork,the perovskite LaZnO_(3) was synthesized via sol-gel method and applied for photocatalytic treatment of sulfamethizole(SMZ)antibiotics under visible light *** was almost completely degraded(99.2%±0.3%)within 4 hr by photocatalyst LaZnO_(3) at the optimal dosage of 1.1 g/L,with amineralization proportion of 58.7%±0.4%.The efficient performance of LaZnO_(3) can be attributed to itswide-range light absorption and the appropriate energy band edge levels,which facilitate the formation of active agents such as·O_(2)^(−),h^(+),and·*** integration of RP-HPLC/Q-TOF-MS and DFT-based computational techniques revealed three degradation pathways of SMZ,which were initiated by the deamination reaction at the aniline ring,the breakdown of the sulfonamidemoieties,and a process known as Smile-type rearrangement and SO2 *** toxicity of SMZ and the intermediateswere analyzed by quantitative structure activity relationship(QSAR),indicating the effectiveness of LaZnO_(3)-based photocatalysis in preventing secondary pollution of the intermediates to the ecosystem during the degradation *** visible-light-activated photocatalyst LaZnO_(3) exhibited efficient performance in the occurrence of inorganic anions and maintained high durability across multiple recycling tests,making it a promising candidate for practical antibiotic treatment.
Some functional proteins undergo conformational changes to expose hidden binding sites when a binding molecule approaches their surface. Such binding sites are called cryptic sites and are important targets for drug d...
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Behaviors of vacancies during the amorphous-to-crystalline transition of thin HfO2 layers were studied by monoenergetic positron beams. The HfO2 layers with 430 nm thickness were fabricated on TiN/Si templates by atom...
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TiN/ZrO2/TiN capacitors were characterized using XRD, STEM, EDX, and monoenergetic positron beams. For an as-deposited ZrO2 layer, an interlayer was formed in the layer. After post-deposition annealing at 550°C, ...
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The annealing properties of vacancies in HfO2 layers deposited on Si substrates and their role in amorphous-to-crystalline transition were studied with monoenergetic positron beams. HfO2 layers with a thickness of 4.3...
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In this study, we performed systematic search for dopants to stabilize the tetragonal structure of HfO2 and ZrO2 by using first-principles calculations. Whole impurity configurations within the supercell, more than 12...
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Behaviors of vacancies during the amorphous-to-crystalline transition of thin HfO 2 layers were studied by monoenergetic positron beams. The HfO 2 layers with 4‒30 nm thickness were fabricated on TiN/Si templates by a...
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ISBN:
(数字)9798331510589
ISBN:
(纸本)9798331510596
Behaviors of vacancies during the amorphous-to-crystalline transition of thin HfO 2 layers were studied by monoenergetic positron beams. The HfO 2 layers with 4‒30 nm thickness were fabricated on TiN/Si templates by atomic layer deposition technique. The major vacancy-type defects in the layers were identified as (i) Hf vacancies (V Hf ) coupled with oxygen vacancies (V O s) and (ii) vacancy clusters. After annealing at 500°C, the concentration of vacancy clusters increased, which was attributed to the agglomeration of intrinsic open spaces in the amorphous phase upon the phase transition from amorphous to crystalline phases. The phase transition started near the interface between the HfO 2 layer and bottom electrodes (TiN). After the crystallization, the concentration of vacancy clusters decreased as the annealing temperature increased.
Hedgehog(Hh)is a morphogen that binds to its receptor Patched 1 and activates Smoothened(SMO),thereby governing embryonic development and postnatal tissue *** can bind and covalently conjugate to the luminal cysteine-...
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Hedgehog(Hh)is a morphogen that binds to its receptor Patched 1 and activates Smoothened(SMO),thereby governing embryonic development and postnatal tissue *** can bind and covalently conjugate to the luminal cysteine-rich domain(CRD)of human SMO at the D95 residue(D99 in mouse).The reaction mechanism and biological function of SMO cholesterylation have not been ***,we show that the SMO-CRD undergoes auto-cholesterylation which is boosted by calcium and involves an intramolecular ester *** cells,Hh stimulation elevates local calcium concentration in the SMO-localized endosomes through store-operated calcium *** addition,we identify the signaling-incompetent SMO D95E mutation,and the D95E mutant SMO can bind cholesterol but cannot be modified or activated by *** homozygous SmoD99E/D99E knockin mice are embryonic lethal with severe developmental delay,demonstrating that cholesterylation of CRD is required for full-length SMO *** work reveals the unique autocatalytic mechanism of SMO cholesterylation and an unprecedented role of calcium in Hh signaling.
The structural stabilities of the monoclinic and tetragonal phases of Si-doped HfO2 at finite temperatures were analyzed using a computational scheme to assess the effects of impurity doping. The finite temperature ef...
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Polymer-based heat exchangers can offer a promising solution for environmental sustainability due to their low energy consumption. The incorporation of microchannels and nanofluids further enhances the heat transfer p...
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