Low-content Pt-triggered the optimized d-band center of Rh metallene for energy-saving hydrogen production coupled with hydrazine degradation

Utilizing the hydrazine-assisted water electrolysis for energy-efficient hydrogen production shows a promising application, which relies on the development and design of efficient bifunctional electrocatalysts. Herein, we reported a low-content Pt-doped Rh metallene(Pt-Rhene) for hydrazine-assisted water electrolysis towards energy-saving hydrogen(H_(2)) production, where the ultrathin metallene is constructed to provide enough favorable active sites for catalysis and improve atom utilization.Additionally, the synergistic effect between Rh and Pt can optimize the electronic structure of Rh for improving the intrinsic activity. Therefore, the required overpotential of Pt-Rhene is only 37 mV to reach a current density of-10 mA cm^(-2) in the hydrogen evolution reaction(HER), and the Pt-Rhene exhibits a required overpotential of only 11 mV to reach a current density of 10 mA cm^(-2) in the hydrazine oxidation reaction(HzOR). With the constructed HER-HzOR two-electrode system, the Pt-Rhene electrodes exhibit an extremely low voltage(0.06/0.19/0.28 V) to achieve current densities of 10/50/100 mA cm^(-2) for energy-saving H_(2) production, which greatly reduces the electrolysis energy consumption. Moreover,DFT calculations further demonstrate that the introduction of Pt modulates the electronic structure of Rh and optimizes the d-band center, thus enhancing the adsorption and desorption of reactant/intermediates in the electrocatalytic reaction.

Coordination Effect-Promoted Durable Ni(OH)_(2) for Energy-Saving Hydrogen Evolution from Water/ Methanol Co-Electrocatalysis

Electrocatalytic water splitting is a viable technique for generating hydrogen but is precluded from the sluggish kinetics of oxygen evolution reactions(OER).Small molecule oxidation reactions with lower working potentials,such as methanol oxidation reactions,are good alternatives to OER with faster kinetics.However,the typically employed Ni-based electrocatalysts have poor activity and stability.Herein,a novel three-dimensional(3D)-networking Modoped Ni(OH)_(2) with ultralow Ni-Ni coordination is synthesized,which exhibits a high MOR activity of 100 mA cm^(−2) at 1.39 V,delivering 28 mV dec^(−1) for the Tafel slope.Meanwhile,hydrogen evolution with value-added formate co-generation is boosted with a current density of more than 500 mA cm^(−2) at a cell voltage of 2.00 V for 50 h,showing excellent stability in an industrial alkaline concentration(6 M KOH).Mechanistic studies based on density functional the-ory and X-ray absorption spectroscopy showed that the improved performance is mainly attributed to the ultralow Ni-Ni coordination,3D-networking structures and Mo dopants,which improve the catalytic activity,increase the active site density and strengthen the Ni(OH)_(2)3D-networking structures,respectively.This study paves a new way for designing electrocatalysts with enhanced activity and durability for industrial energy-saving hydrogen production.

Assessing effectiveness of existing building energy-saving reconstruction policy adapted to market development

The market development and policy matching of existing building energy-saving retrofits determine the effectiveness of policies in promoting the operation of existing building energy-saving retrofit market.Based on the perspective of market development to evaluate the effectiveness of existing building energy-saving transformation policy,it is necessary to clarify the basic connotation of the effectiveness of existing building energy-saving transformation policy,systematically analyze the evaluation content,construct a multi-level evaluation index system,and select scientific and effective quantitative evaluation methods to implement a strict evaluation process.

Energy-Saving Effect of Discolored Decorative Boards in Flexible Interior Space

Green,energy conservation and environmental protection have increasingly become the theme of the sustained and healthy development of cities against the background of new urbanization,which indicates that the problem of building energy consumption has received growing attention.This paper explores the impact of energy-saving decorations in flexible interior space on energy-saving effect of buildings so as to broaden the horizon of energy conservation in building,thereby alleviating the problem of energy shortage in China.

Assessing effectiveness for revenue distribution of existing building energy-saving renovation project

The revenue distribution of the existing building energy-saving renovation is the lever to drive the subject’s momentum,and the effectiveness of revenue distribution of existing building energy-saving renovation projects is conducive to a scientific evaluation mechanism.This paper analyzes the evaluation factors of the effectiveness of revenue distribution of existing building energy-saving renovation projects,constructs evaluation indicator system for the effectiveness of revenue distribution of existing building energy-saving renovation projects.It selects a scientific quantitative evaluation method for the effectiveness of revenue distribution of existing building energy-saving renovation projects,implements the effectiveness evaluation of revenue distribution of existing building energy-saving renovation projects,measures degree of the effectiveness of revenue distribution of existing building energy-saving renovation projects scientifically,improves the revenue distribution mechanism of existing building energy-saving renovation projects continuously,and drives the development of existing building energy-saving renovation practices in revenue.

Comparison of Hypolipidemic Effect of Refined Konjac Meal With Several Common Dietary Fibers and Their Mechanisms of Action

The effects of RKM in comparison with pectin, algin and agar on lipid levels in serum and liver and on liver histopathology in rats were studied. In addition, the effects of all the tested materials on the composition and output of fecal bile acid were observed. All four kinds of dietary fiber were given at a level of 5% of diet to young male rats of Wistar strain fed on a lipid-rich diet contalning 5 % lard, 1% cholesteral and 0. 25 % cholate. All the dietary fibers tested have similar effects on serum lipid composition. In all groups, these substances prevent ed increases in total cholesterol in fasting serum, but the level of triglyceride was tmchangd.The concentrations of totaI cholesterol and triglyceride in the liver were lower in the RKM group than in the control group and the other three groups. Hepatic histopathological exami nation also showed the most significant lipotropic effect in the RKM group. The daily output of fecal bile acids (CDCA+GDCA) was significantly increased in the four experimental groups than in the normal group and the control group. The increase of CDCA was more significant than GDCA, suggesting that the increase of fecal bile acids, especially CDCA, may be one of the mechanisms by which RKM and the other three dietary fibers exerts a hypocholesterolemic effect

Comparison of the Thermomagnetic and Thermal Effects duringNanocrystallization of Amorphous Fe_(76.5-x)Cu_1Nb_xSi_(13.5)B_9 Alloys

The results of thermomagnetic (TM) and calorimetric (DSC) measurements have been compared in order to clarify some details of the mechanism of nanophase-formation from Finemet-type precursors with different Nb contents. It was found that the main features of the DSC thermograms (shape, relative separation and amplitude of the exothermic peaks characteristic for the precipitation of the Fe-(Si) solid solution and the transition metal borides) depend mainly on the composition of the precursor glass, and are only slightly affected by the heating rate between 20 and 80 K/min. The amplitude of the uprise of the magnetization in the TM curves (attributed to the precipitation of bcc-Fe(Si) and borides) decreases with increasing Nb-content. The Curietemperature of the precursor glasses. Tc(am1), the remainder amorphous phases, Tc(am2) and the bcc nanophase, Tc(n-Fe) are determined from the thermomagnetic curves. The shape of the TM curves is interpreted on the basis of the reactions describing the crystalIization of the hypo-eutectic Fe-B glasses.

COMPARISON OF THE EFFECTIVENESS BETWEEN ANTERIOR CAPSULOTOMY WITH Nd:YAG LASER AND WITH BENT NEEDLE IN PATIENTS WITH CONGENITAL CATARACT

The effectiveness of capsulotomy with Nd:YAG laser and with bent needle were compared in 50 patients(66 eyes) with congenital cataract. There were 24 patients(32 eyes) in the laser group and 26 patients(34 eyes) in the needle group. There were not significant differences in sex, age, pre-operative visual acuity and intraocular pressures, and classification of cataract between the two groups. The results show that patients in the laser group have better post-operative visual acuity. The reason is YAG las...

COMPARISON OF ASSISTANT EFFECTS AMONG ASSISTANT MOLECULES ON T CELL ACTIVATION BY SUPERANTIGEN TSST-1

对抗ＣＤ２８抗体、佛波酯（ＰＭＡ）和ＩＬ－２三种辅助分子在体外缺乏抗原提呈细胞（ＡＰＣ）的情况下辅助超抗原活化Ｔ细胞的作用进行比较。结果发现：抗ＣＤ２８抗体、ＰＭＡ和ＩＬ－２辅助超抗原活化Ｔ细胞的最适浓度分别为１０μｇ／ｍｌ、１０ｎｇ／ｍｌ和１０００ｕ／ｍｌ；其中，抗ＣＤ２８抗体辅助超抗原活化Ｔ细胞的作用最强，ＰＭＡ次之，ＩＬ－２最弱。另外，对三种辅助分子辅助超抗原活化Ｔ细胞的机制进行了探讨。本研究为今后选择合适的辅助分子与合成肽技术共同组建一种有效的探找超抗原Ｔ细胞表位的方法奠定了基础。

Comparison of REML and MINQUE for Estimated Variance Components and Predicted Random Effects

Linear mixed model (LMM) approaches have been widely applied in many areas of research data analysis because they offer great flexibility for different data structures and linear model systems. In this study, emphasis is placed on comparing the properties of two LMM approaches: restricted maximum likelihood (REML) and minimum norm quadratic unbiased estimation (MINQUE) with and without resampling techniques being included. Bias, testing power, Type I error, and computing time were compared between REML and MINQUE approaches with and without Jackknife technique based on 500 simulated data sets. Results showed that MINQUE and REML methods performed equally regarding bias, Type I error, and power. Jackknife-based MINQUE and REML greatly improved power compared to non-Jackknife based linear mixed model approaches. Results also showed that MINQUE is more time-saving compared to REML, especially with the use of resampling techniques and large data set analysis. Results from the actual cotton data analysis were in agreement with our simulated results. Therefore, Jackknife-based MINQUE approaches could be recommended to achieve desirable power with reduced time for a large data analysis and model simulations.

Comparison of Water and Soil Conservation Effect of Trees,Shrubs and Grasses in the Red Soil Area of Southern China

Assessing the effects of vegetation on water and soil conversation is the key basis for research and management of ecological restoration on water-eroded areas.In this study,the runoff depth,soil loss and corresponding precipitation of five plots planted respectively with Pueraria lobata,Lespedeza bicolor Turcz,Manglietia yuyuanensis Law,Paspalum natatu Fliigge,Paspalum wettsteinii Hackel and one control plot were observed monthly from 2003 to 2010 in Hetian Town of Changting County,Fujian Province,a typical water-eroded area in southern China.Then the effects of different vegetation on water/soil conversation(RE/SE)were determined using the ratios of runoff depth/soil loss between vegetated plots to the control plot.Meanwhile,the effect of precipitation on the water and soil loss was also analyzed.The results showed that,both the water and soil conservation effects of Pueraria lobata and Manglietia yuyuanensis Law are better than Lespedeza bicolor Turcz and Paspalum natatu,while Paspalum wettsteinii Hackel are the worst.The differences of effects of water conservation are more significantly than those of soil conversation between five kinds of vegetations.The runoff depth is mainly affected by precipitation,the determination coefficients(R2)of linear regression models between precipitation and runoff depth of all planted plots are all greater than 0.9,whereas the determination coefficients of the linear regression models between precipitation and soil loss vary form 0.3 to 0.8 for different vegetated plots.These results provide a reference for vegetation reconstruction in the current and similar areas.

A comparison of the short-term effects of fixed platform versus rotating high-fiexion prosthesis for the patients with osteoarthrities of knee

Objective To compare the preliminary clinical outcome between fixed platform and rotating high-flexion prosthesis following total knee replacement(TKR).Methods Form January 2007 to December 2009,68 patients with osteoarthritis of

Comparison of the effects of autotransfusion and homologous transfusion on milieu interieur and secretion of erythropoietin

Objective To compare the effects of autotransfusion and homologous transfusion on milieu interieur and secretion of erythropoietin (EPO). Methods Thirty patients aged 8-21 yr, undergoing surgical correction of kyphoscoliosis were randomly divided into two groups of fifteen:group A and group B. In group A patients received homologous transfusion during operation, while in group B shed blood was collected from operative field and after filtration RBCs were separated by a differential centrifugation and washed in normal saline and reinfused. Anesthesia was induced with fentanyl 2 μg· kg-1 ,propofol 1 mg·kg-1 and vecuronium 0.1 mg·kg-1 and maintained with inhalation of isoflurane and 50 % N2O in oxygen and intermittent iv boluses of vecuronium and fentanyl. Blood routine, blood gases, electrolytes, plasma osmotic pressure and activated clotting time (ACT) were measured before operation, 2 h after skin incision and at the end of surgery. Blood EPO concentration was measured before operation,at the end

2种木霉菌制剂对烤烟生长的影响

[目的]积极响应洱海保护行动,减轻长期大量使用化学农药带来的一系列问题。[方法]采用生物农药(木霉菌制剂),在大理市湾桥镇以K326为供试材料,采用灌根施用方法,探究东方农韵木霉菌(T_(1))、优沃美哈茨木霉菌(T_(2))、清水处理(CK)对烤烟移栽成活率、不同时期的农艺性状、生物学产量、经济性状烤后烟叶化学成分、黑胫病防控效果的影响。[结果]各处理的移栽成活率均为100%,但烟苗长势表现为T_(1)>T_(2)>CK,以T_(1)处理的烟苗茎高最高,达18.6 cm;与CK相比,2种木霉菌制剂处理在烤烟不同生长时期,对烤烟农艺性状都有不同程度的促生效果。团颗期T_(1)、T_(2)处理烟株株高、最大叶面积分别较CK增加8.53%、37.41%和2.38%、14.73%;旺长期T_(1)、T_(2)处理烟株茎围和最大叶面积分别较CK增加8.68%、30.78%和0.68%、23.99%;采烤期T_(1)、T_(2)处理最大叶面积显著提高,分别比CK增加33.36%、13.95%;在等量施肥条件下,烤后烟叶的经济性状、生物产量均随木霉菌制剂的使用而增加,T_(1)、T_(2)处理烟叶总重分别为256.4和229.0 g,比CK分别高55.4和28.0 g;T_(1)、T_(2)处理可分别增产534.58、207.30 kg/hm^(2),其产值分别增加8102.15和3621.34元/hm^(2);T_(1)、T_(2)处理烤烟中部烟叶总糖和还原糖含量较高,氯离子含量和糖碱比较低,烟草的化学成分更趋协调;与CK相比,施用木霉菌制剂均能降低黑胫病的发病率和病情指数,T_(1)和T_(2)处理对发病率和病情指数的降低效果明显,T_(1)、T_(2)处理的发病率和病情指数分别达到4.00%、1.85和3.33%、1.93,防治效果分别达53.27%和51.40%。[结论]施用木霉菌制剂对烤烟的生长发育有一定促进作用,可以防治黑胫病,减少黑胫病发生,并提高烤烟的质量和烟叶的口感。

核酸共提取试剂盒应用于柑橘危险性病害检测的效率评价

柑橘易受到不同遗传类型病原的复合感染,传统病原检测方法需单一核酸提取,使得检测步骤繁琐,影响检测效率。以普通单一核酸提取试剂盒为对照,采用核酸共提取试剂盒,通过分析核酸完整性和浓度以及病原检测效率,以期探讨核酸共提取试剂盒应用于柑橘危险性病害检测的可行性,从而简化柑橘病原检测方法的核酸提取步骤。结果表明,相比普通RNA提取试剂盒,核酸共提取试剂盒提取RNA的完整性、纯度、浓度以及柑橘衰退病毒病原检测效率均无显著差异,可达到相同检测效果。相比普通DNA提取试剂盒,核酸共提取试剂盒提取DNA的完整性、纯度均无显著性差异,但其浓度显著降低,使得柑橘黄龙病和柑橘溃疡病病原检测效率也显著降低;通过增加PCR反应的起始模板量,核酸共提取试剂盒检测柑橘黄龙病和柑橘溃疡病病原的效率与普通DNA试剂盒无显著差异,可达到相同检测效果。综上所述,核酸共提取试剂盒可应用于柑橘危险性病害检测,将有助于提高病原复合感染样品的检测效率。

六种布鲁菌病疫苗对绵羊与山羊免疫效果的比较

为了比较不同布鲁菌病疫苗对乌拉特草原以放牧为主的山羊与绵羊的免疫效果,我们在乌拉特草原6个苏木/镇,随机选取80~100日龄并经过布鲁菌病检测阴性的乌拉特土种绵羊羔385只、二狼山绒山羊羔275只,用6种布鲁菌病疫苗进行免疫效果比对试验。采用琥红平板凝集试验(RBPT)和试管凝集试验(SAT)分别对试验组羊接种疫苗后7、14、21、35、60、120、150、180、210、240、270 d进行转阳率和抗体效价检测;免疫后270 d进行攻毒试验。RBPT和SAT结果显示,M5-90Δ26和S2接种绵羊与山羊后抗体产生快,持续时间长;免疫后攻毒试验结果显示,A19点眼绵羊和A19-ΔVirB12株皮下注射绵羊保护比例均为4/6;M5-90Δ26绵羊皮下注射和ReV.1山羊点眼的保护比例均为4/5;本试验为乌拉特草原建立牛羊免疫无布鲁菌病区筛选理想疫苗,以及为创建全国首个牛羊免疫无布鲁菌病区制定合理的免疫程序提供了科学依据,同时对布鲁菌病疫苗的研制及国内其他地区布鲁菌病防治具有参考价值和指导作用。

同辈比较效应问卷的编制及其对抑郁、焦虑的预测研究

目的:编制青年人同辈比较效应问卷(peer comparative effects questionnaire),并考察该问卷对抑郁焦虑的预测作用。方法:应用方便取样法选取330名青年进行问卷初测,对收集的数据进行项目、探索性因子分析,筛选问卷题目,进一步完善问卷。再次应用方便取样法选取350名青年完成经筛选完善后生成的问卷,对收集的数据进行信、效度检验及验证性因素分析;测试后1个月,从350名青年中随机抽取30名进行重测来检验问卷信度。结果:(1)探索性因素分析显示问卷可保留26个题目,可分为自我激励、自我认同、自我怀疑3个维度,总解释率为53.39%。验证性因素分析显示3因素模型拟合度良好。问卷具有良好的信效度(α=0.81~0.91),可以作为相关研究的评估工具。各维度与相似测量问卷之间相容效度良好(r=0.51~0.76,均P<0.01)。(2)青年人同辈比较效应问卷的自我激励维度可显著负向预测抑郁(β=-0.16,P<0.01);自我怀疑维度能够显著正向预测抑郁(β=0.54,P<0.001)、焦虑(β=0.51,P<0.001)。结论:新编制青年人同辈比较效应问卷能够评估人际比较后产生的自我激励、自我认同和自我怀疑,且具有良好信效度。其中的自我怀疑维度可以有效预测抑郁和焦虑,自我激励维度可以有效预测抑郁。

Effect of Teacher Feedback, Peer Review and the Combination on EFL Writing Study Proposal

Since the result of effect comparison is important for teacher's decision making,roles teacher feedback and peer review play respectively and collaboratively in tertiary-level EFL writing context should be addressed via quantitative study as this paper proposed.Quantitative data should be collected from students'first drafts,second drafts and written comments from teachers and peers.Gains for overall scores between the first and second drafts and correlation between suggestions and gains should be examined.

血流导向装置与传统支架治疗颈内动脉眼动脉段未破裂动脉瘤的疗效

目的比较血流导向装置与传统支架治疗颈内动脉眼动脉段未破裂动脉瘤的安全性与有效性。方法回顾性分析2017年1月至2023年1月中国人民解放军南部战区总医院神经外科应用支架辅助栓塞治疗的70例颈内动脉眼动脉段未破裂动脉瘤的临床资料。根据植入支架类型,分为血流导向装置组(n=21)和传统支架组(n=49),比较两组术后临床效果及并发症。结果两组患者随访3~24个月,平均(14.4±1.82)个月。围手术期及随访结果显示,血流导向装置组、传统支架组均能达到较高的动脉瘤闭塞率(93.3%vs.87.9%),差异无统计学意义(P>0.05);血流导向装置组相较于传统支架组,围手术期及短期并发症发生率低(0 vs.6.1%),并且血流导向装置组复发率也低于传统支架组(0 vs.6.1%),但差异无统计学意义(P>0.05)。结论血流导向装置与传统支架治疗颈内动脉眼动脉段未破裂动脉瘤均可行并且安全有效,初步研究结果表明血流导向装置治疗后短期并发症及再治疗发生率更低,手术时间短,但对于患者长期的并发症仍需要进一步研究验证。

政府主导下我国高素质农民培育效果比较研究

政府主导下的高素质农民培育是乡村人才振兴的重要途径。文章通过对我国四大经济区域高素质农民培育的横纵比较,结果显示:培育高素质农民的专项扶持政策力度总体有下滑趋势,区域差异不明显,但在普惠性金融政策上存在地区差异,西部地区呈现出贷款“高需求高满足”态势,东北地区表现出较强的农业保险购买力。高素质农民队伍壮大及其生产经营现代化发展带来的社会经济和生态效益在各地区都有一定程度的改观,东部地区经济效益最为显著,东北地区的培育效益总体低于东部和中西部地区。因此,亟需分区分类采取不同的倾斜政策,引导和激励高素质农民在乡村振兴和农业高质量发展中发挥“中坚力量”作用。