The widespread use of unsustainable fossil fuels has caused serious damage to the ecological environment. The development of sustainable clean energy is urgent. Producing hydrogen by water electrolysis can effectively solve fossil energy shortage and environmental pollution issues. The preparation of inexpensive, efficient, and stable electrocatalytic hydrogen evolution electrode materials is the key to achieving the application of electrocatalytic hydrogen evolution. Herein, the amorphous nickel oxide/nickel foam (NiOx/NF) hydrogen evolution electrode was prepared by a simple one-step hydrothermal method with hydrogen peroxide as an oxidant. The amorphous leaf array structure of NiOx/NF electrode can enrich the surface composition and expose more catalytic active sites. Further, hydrogen peroxide etching can optimize the electronic structure of NiOx, and accelerate the electron migration. Thus, NiOx/NF displays excellent alkaline hydrogen evolution activity with the low over potentials of 70, 318 and 361 mV at 10, 500 and 1000 mA cm-2, respectively, leading to high performance in alkaline HER than those of reported Ni-based electrodes and even surpasses commercial Pt/C at high current density. Our work provides a new approach for developing inexpensive electrocatalysts with excellent alkaline hydrogen evolution activity and stability.(c) 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

This paper expounds the connotation of high-quality development from the perspective of “five development concepts”, and analyzes the dialectical relationship among innovative development, coordinated development, green development, open development and shared development. On this basis, a relatively complete evaluation index system of intellectual property to promote high-quality development has been constructed, and finally, the countermeasures of intellectual property to promote high-quality development have been proposed.

根据课题组的研究工作"席夫碱铋配合物的开发及应用",设计了"异烟肼缩2-羟基-5-甲氧基水杨醛席夫碱铋配合物的制备"本科综合创新实验,引入本科实验教学.实验以异烟肼和2-羟基-5-甲氧基水杨醛为原料,首先生成异烟肼缩2-羟基-5-甲氧基水杨醛席夫碱(A),然后再与硝酸铋螯合,制备异烟肼缩2-羟基-5-甲氧基水杨醛席夫碱铋配合物(B),并通过红外光谱、核磁共振谱、质谱对化合物的结构进行表征分析.实验内容体现多学科知识点的交叉融合和综合实验技能的训练,在激发学生的科学探究兴趣,培养锻炼学生的综合能力等方面具有积极的作用,实验安全,反应条件温和易控,现象明显,可用于模块化教学,也可以拆分成多个环节实验,适合不同学时的本科实验教学要求,可以进行教学推广.

With the further development of the internet of everything, as well as the increasing number of smart phones, smart glasses, and other end devices, the data growth rate has far exceeded the growth rate of network bandwidth. Meanwhile, the appearance of numerous novel applications, such as augmented reality (AR) and driverless technology, has higher demand for network latency. Therefore, edge computing integrates computing, network, and storage resources into a unified platform, which offers services to users, so that the data can be effectively processed at the beginning. This model is different from cloud computing that transmits all the data to a data center. It bypasses the bottleneck of network bandwidth and delaying and has aroused widespread concern. At the beginning, this article introduces the concept of edge computing and presents the definition of edge computing; then, it introduces the basic concept, characteristics and demands of smart water; at last, it constructs a smart water system framework on the basis of edge computing, and conducts functional analysis on each layer of the framework.

目前师范技能的训练是师范专业培养的一个瓶颈,而地方本科院校教师普遍超负荷工作,增加师范技能训练相关课程课时有现实困难.2016年以来,湘南学院在"无机化学"等课程中系统地规模化组织师范生开展课前五分钟教学实践,经过五年的积累与创新,逐渐形成了一个以师生合作的课题组为核心、学生自主运行、参与面大、效果明显但又不增加教师负担的培养模式.

Reaction of silver nitrate with 2‐aminobenzothiazole (abbreviated as Habt) in methanol at 45°C gave mononuclear complex of formula [Ag (Habt) 2 ]NO 3 •CH 3 OH. The structure of the complex was characterized by infrared (IR) spectra, single crystal X‐ray diffraction, and elemental analysis. X‐ray diffraction analysis indicated that the title complex was crystallized in the triclinic crystal system with space group P–1, in which silver(I) ion was coordinated to two 2‐aminobenzothiazole ligands through the benzothiazol nitrogen atom. Theoretical study of the complex was carried out by density functional theory (DFT) B3LYP method. The antimicrobial effects of the ligand and its silver(I) complex were evaluated by bio‐microcalorimetry on the growth of Schizosaccharomyces pombe ( S . pombe ). Some quantitative metabolic parameters, such as growth rate constant ( k ), maximum heat power ( P max ), inhibition ratio ( I ), and half inhibition concentration (IC 50 ), were derived from the metabolic power–time curves of S . pombe growth. The half inhibition concentration (IC 50 ) of the ligand was calculated to be 2.58 × 10 −3 mol L −1 . The complex could strongly influence the lag phase of S . pombe .

大多数的水果中含有较丰富的还原糖.为了测定水果中的还原糖含量,本研究对比了直接滴定法和3,5-二硝基水杨酸比色法(DNS法),对四种常见水果中的还原糖含量进行了测定,采用精密度试验和回收率试验.结果 表明:直接滴定法准确度优于DNS法,DNS法重复性优于直接滴定法,两种方法各有利弊.直接滴定法操作简单,DNS法高效快速.本研究对人们合理饮食及还原糖测定提供了一定的指导意义.

在305.15 K条件下,应用生物微量仪测得不同浓度磺胺嘧啶钠(SD-Na)作用下的粟酒裂殖酵母(S.pombe)生长代谢曲线,并根据生长代谢曲线计算得到其生长速率常数k、最大发热功率Pmax、抑制率I、传代时间tG、半抑制浓度CI,50等热动力学参数.实验结果表明:在研究浓度范围内,SD-Na对S.pombe具有较好的抑制作用,其半抑制浓度CI,50为13.4751×10-4 mol·L-1.

《无机及分析化学》是大学本科化学、化工、环境等专业必修基础课程之一.如何摆脱某些化学理论知识点枯燥性成为《无机及分析化学》教学过程中的一大难点.本文提出通过多信息、单主线的教学模式进行《无机及分析化学》教学,在课堂教学过程中围绕一条主线,融入生活、文化、艺术、思政等多方面的信息,调动学生的积极性与主动性.

Aiming at the questions existing in the teaching of “Principles of Chemical Engineering”, in order to cultivate students’ engineering application abilities, new technologies are integrated into the “three-transfer” theory (momentum transfer, heat transfer, and mass transfer), experimental projects are renovated, and virtual simulation experiments are added. Then, a new teaching system for chemical principles and experimental teaching on the basis of “one platform and three clients” (one cloud platform, mobile client, teacher client, and administration client) is constructed. It is a student-oriented blended teaching system driven by problems; develop abundant teaching resources, further consummate multimedia courseware, computer-aided teaching, and develop a three-dimensional teaching system with textbooks, multimedia courseware, chemical simulation software, and online classroom. To realize a student-oriented interactive process for learning and teaching with the guidance of teachers, and give full play to students’ initiative, activity, and creativity during their learning process; focus on strengthening the assessment for the experimental courses of chemical principles, strengthen classroom discussion and creative practical work, and improve students’ engineering application ability, as well as abilities of analyzing problems, solving problems, and raising problems by applying comprehensive knowledge.

制药工程专业是我校近几年新办专业,其实践教学体系不够完善,教学形式相对单一,学生缺乏创新精神及较强的实践能力.通过实践教学与改革,建立实验室开放平台,培养学生的创新性及提升他们的思维能力;建立学生自主学习方案,培养学生学习的主动性及提升他们解决问题的能力;建立学生实验评分方案,培养学生的责任心及提升他们的管理能力;建立虚拟仿真平台,培养学生对工作环境的认知及提升他们社会实践能力.

A Valen Schiff-base ligand [1,5-bis(2-hydroxy-3-methoxybenzylidene)thiocarbonohydrazide] and its bismuth(III) complex were synthesized. The compositions and structures of two compounds were characterized by elemental analysis, spectrometry (1HNMR, MS, FT-IR, and UV-visible), chemical analysis, molar conductivity, and TG–DTA analysis. The results showed that the molecular formula of Schiff base and its bismuth(III) complex was C17H18O4N4S (abbreviated as H2L, L = C17H16O4N4S) and [Bi(C17H16O4N4S)Cl·H2O] (abbreviated as [Bi(L)Cl·H2O]), respectively. Furthermore, the thermokinetic properties of the action of Schiff base and its bismuth(III) complex on the growth metabolism of S. pombe were studied by bio-microcalorimetry at 305.15 K. The growth rate constant (k), maximum heat power, generation time, inhibition ratio (I) and half inhibition concentration (IC50), and their quantitative relationship with the concentration were calculated, respectively. Experimental results indicated that both Schiff base and its bismuth(III) complex could inhibit the growth of S. pombe, but the inhibitory effect of Schiff base was stronger than that of the complex. The half inhibition concentrations of Schiff base and its bismuth(III) complex were found to be 4.17 × 10−3 mol L−1 and 6.13 × 10−3 mol L−1, respectively.

目前,世界进入新一轮世界范围的科技革命和产业变革.我国的高等学校人才培养工作已进入提高质量的升级期和改革创新的攻坚期.地方本科院校由于底子薄、人才培养观念落后,管理体制不完善等原因,本科生参与科研程度不高.在新时代背景下,本文结合湘南学院化学生物与工程学院学生参与科研的管理模式,从人才培养方案修订、实施科研导师制和学生参与地方特色项目等方面,探索地方本科院校理工科学生参与科研的方法和思路.