摘要：宽带有机光电探测器(OPDs)可以集成到各种可穿戴设备中,在健康监测等领域显示出巨大的应用潜力.这里,我们以酞菁铅(PbPc)和富勒烯(C70)小分子分别作为给体和受体,基于MoO_(3)俘获电子辅助空穴隧道注入的机制实现了高性能宽带倍增型有机光电探测器(PM-OPDs).为了控制PbPc分子的晶相结构,我们分别制备了PbPc:C70体异质结(BHJ)和PbPc/C70平面异质结(PHJ)器件.可以看出,PHJ器件表现出更强的近红外吸收特性,即更有利于PbPc分子形成三斜相结构.我们进一步使用具有吸收互补特性的材料(PbPc和SubPc)作为有源层,采用PHJ/BHJ混合异质结结构,制备了在300–1000 nm范围内平坦的全色PM-OPDs.在-8 V反向偏压下,制得的全色PM-OPDs在整个光谱响应范围内的外量子效率都超过1000%.最后,我们在聚对苯二甲酸乙二醇酯基板上制备了柔性全色PM-OPDs,并成功地实现了人体脉搏信号的检测.本文通过设计器件结构和选择合适的材料,为获得高性能全色PM-OPDs提供了一种新策略.

摘要：To fully exploit the superiority of tubular structures,in this study,we systematically explore the optimal preparation conditions for Ni/Co_(3)O_(4),including cation species and content,additive species and content,and anion *** results reveal that the formation of an initial cobalt nickel acetate hydroxide prism is the key factor and directly affects the final microtubular ***,P is subsequently doped into the Ni/Co_(3)O_(4)lattice to increase the M^(3+)/M^(2+)molar ratio(M=Co and Ni),promote reaction kinetics,and optimize electronic ***,the oxygen evolution reaction performance of P-doped tubular Ni/Co_(3)O_(4)is significantly higher than that of undoped Ni/Co_(3)O_(4)and the state-of-the-art RuO_(2)electrocatalyst.

摘要：The development of low-cost semiconductor photocatalysts for highly efficient and durable photocatalytic H2 evolution under visible light is very *** this study,we combine low-cost metallic Ni3C cocatalysts with twin nanocrystal Zn0.5Cd0.5S(ZCS)solid solution homojunctions for an efficient visible-light-driven H2 production by a simple ***-synthesized Zn0.5Cd0.5S-1%Ni3C(ZCS-1)heterojunction/homojunction nanohybrid exhibited the highest photocatalytic H2-evolution rate of 783μmol h‒1 under visible light,which is 2.88 times higher than that of pristine twin nanocrystal ZCS solid *** apparent quantum efficiencies of ZCS and ZCS-1 are measured to be 6.13%and 19.25%at 420 nm,***,the homojunctions between the zinc blende and wurtzite segments in twin nanocrystal ZCS solid solution can significantly improve the light absorption and separation of photogenerated electron-hole ***,the heterojunction between ZCS and metallic Ni3C NP cocatalysts can efficiently trap excited electrons from ZCS solid solution and enhance the H2-evolution kinetics at the surface for improving catalytic *** study demonstrates a unique one-step strategy for constructing heterojunction/homojunction hybrid nanostructures for a more efficient photocatalytic H2 evolution compared to other noble metal photocatalytic systems.

摘要：Purpose:To summarize the design and methodology of a multi-center *** the existed ethnic differences of glaucoma,this survey will explore the differences with regard to anterior and posterior ocular segment parameters between Caucasians and ***:In this study,four cohorts including American Caucasians and American Chinese from San Francisco,southern mainland Chinese from guangzhou,and northern mainland Chinese from Beijing were prospectively enrolled for a series of eye examinations and tests from May 2008 to December 2010.A total of 120 subjects including 15 of each gender in each age decade from 40s to 70s were recruited for each *** of the following tests were collected:a questionnaire eliciting systemic and ocular disease history,blood pressure,presenting and best corrected visual acuity,auto-refraction,Goldmann applanation tonometry,go nioscopy,A-scan,anterior segment optical coherence tomography (ASOCT),ultrasound biomicroscopy (UBM),visual field (VF),Heidel berg retinal tomography (HRT),OCT for optic nerve,and digital fundus ***:this study will provide insights to the etiologies of glaucoma especially PACG through inter-ethnic comparisons of relevant ocular anatomic and functional parameters.

摘要：The influence of brazing temperature and brazing time on the microstructure and shear strength ofγ-TiAl/GH536 joints brazed with Ti-Zr-Cu-Ni-Fe-Co-Mo filler was investigated using SEM,EDS,XRD and universal testing *** show that all the brazed joints mainly consist of four reaction layers regardless of the brazing temperature and brazing *** thickness of the brazed seam and the average shear strength of the joint increase firstly and then decrease with brazing temperature in the range of 1090-1170℃and brazing time varying from 0 to 20 *** maximum shear strength of 262 MPa is obtained at 1150℃for 10 *** brittle Al3NiTi2 and TiNi3 intermetallics are the main controlling factors for the crack generation and deterioration of joint *** fracture surface is characterized as typical cleavage fracture and it mainly consists of massive brittle Al3NiTi2 intermetallics.

摘要：Restraining the aggregation and polysulfide dissolution of edge-enriched metal sulfides is of significance for their applications as anode materials of lithium-ion batteries(LIBs)with high capacity and long *** this work,we have reported the incorporation of MoS2 nanocrystals into amorphous carbon on the surface of reduced graphene oxide(rGO)by balancing the decomposition rates of phenolic resin(PF)-impregnated ammonium thiomolybdate(ATM),which subsequently forms the MoS2@C/rGO film through redispersion and vacuum *** structural design effectively avoids the aggregation of MoS2 nanocrystals and Li2S loss,and meanwhile ion enrichment in amorphous carbon and diffusion reinforcement can greatly accelerate the electrochemical reaction *** applied as the selfstanding anode,the MoS2@C/rGO film possesses high reversible capacities of 1164 mA h g^-1 at the current density of 0.2 A g^-1 and 810 mA h g^-1 at 6.4 A g^-*** also exhibits quite a high capacity retention after 1000 cycles at 3.2 A g^-*** work develops the formation theory of incorporation structures and promotes their applications in energy storage devices.

摘要：Objective:Sleep quality in kidney transplant recipients is closely associated with symptoms of fatigue and *** subjective assessment tools like the Pittsburgh Sleep Quality Index and the Richards-Campbell Sleep Questionnaire(RCSQ)are widely used to evaluate sleep quality,there is a lack of studies utilizing polysomnography for objective *** study aims to investigate the correlation between sleep quality,fatigue,and depression in kidney transplant recipients using both subjective and objective methods,providing scientific evidence for improving their quality of ***:The cross-sectional study conveniently sampled 50 kidney transplant recipients from a transplant center in a general hospital between August 2018 and March *** and objective sleep parameters were evaluated using the RCQS and polysomnography,*** Fatigue Severity Scale was used to assess fatigue,and the Hamilton Depression Scale was employed to measure depression ***:A lower proportion of rapid eye movement(REM)sleep was associated with increased ***,higher wake time percentages and poorer sleep quality were significantly correlated with greater depression ***:This study underscores the critical importance of effectively managing sleep quality in kidney transplant recipients and addressing their fatigue and depression *** findings lay a foundation for developing targeted nursing and therapeutic strategies.

摘要：可被蓝光激发的高热稳定性红色荧光粉是制作高性能白光二极管(WLED)的关键材料.研究发现,Ce^(3+)掺杂的SrLaScO_(4)(SLO:Ce^(3+))荧光粉在440 nm激发下呈现峰值为640 nm的反常宽带红光发射.光谱学和结构分析证实Ce^(3+)离子在SLO中进入[LaO_(8)]多面体,产生强的晶体场劈裂和较大的Stokes位移,实现了比Eu^(2+)更低能量的红光发射.我们还设计并揭示了一种电荷转移相互作用的策略:在Sc^(3+)位置引入电负性较大的Ga^(3+),Ga^(3+)可以吸引更多邻位配合基团的电荷,以减少导带底部的电子占用而扩大带隙.Sc/Ga取代有效地抑制了热激活电离过程,使SrLa(Sc,Ga)O_(4):Ce^(3+)的热稳定性获得了显著提升,即在150℃的发光强度比(相对于20℃)从15%提升至31%.本研究为发现具有良好热稳定性的新型Ce^(3+)掺杂红色荧光粉提供了有效的设计原则.

摘要：The effects of equipment parameters of batch distillation column on the yield proportion are discussed and analyzed, the relations between maximal yield proportion and the column equipment parameters are correlated, which not only can be used to appraise rationality of the design parameters of the columns being employed and which but also can be used to new batch distillation column design. Under the assistance of the separation difficulty defined in this paper, the minimum number of theoretical plates is determined by the limit loss proportion method given, and further the actual number of theoretical plates and the height for the batch distillation are calculated by using the redundancy coefficient found to complete the whole design of the batch distillation as shown in the computational sample. Research showed that the actual number of theoretical plates and the height of batch distillation column with the column diameter 0.6 m are 17 and 5.1 m in alcohol mixture separation system of the sample proposed. Moreover, the approach can be extended to the design of batch distillation column with a separation system of multi-component liquid mixture after those adjacent components are treated as numerous binary component systems.

摘要：The structure and working principle of a kind of permanent-magnet adsorption tracked wall-climbing ro-bot used in ship was analyzed in this paper. The robot can complete vertical climbing wall function when perma-nent-magnet adsorption tracked was driven by ac servo motor. In order to improve the load capacity and obstaclesurmounting ability of robot, a new permanent-magnet auxiliary caster adsorption mechanism and driven wheelfloating mechanism were used for the design of structure. In thispaper, the mechanical state of the permanent-mag-netic adsorption tracked climbing mechanism was analyzed. Through the magnetic simulation and experimental a-nalysis of magnetic adsorption system, the adsorption unit structure and electric drive system parameters of thepermanent-magnet tracked wall-climbing robot were reasonably designed.