Comprehensive Recycling Technology of Waste Residues in Zinc Hydrometallurgy

In order to improve the refining effect of zinc ore and promote the development of this industry,taking the hydrometallurgical zinc smelting process as an example,this paper first establishes a model for the recycling of waste residues in the hydrometallurgical process,proposes optimization measures based on proven comprehensive recycling technology for purifying residues to obtain higher valuable metal recovery rate,and provides reference for those in relevant fields.

The New Understanding of Potash Development Scale and the Comprehensive Utilization of Resources in Chaerhan Salt lake

This paper briefly introduces resources characteristics and development advantages for Charhan salt lake;and elaborated the technology progress to increase potassium mining scale systematically,the impact of the

Review of Restoration Technology and Multi-environmental Factors Analysis of West Lake Ecosystem in Hangzhou City

The urban lake ecosystem has the characteristics of long-term,complex and comprehensive in its ecological restoration process because it is related to social and economic activities at multiple levels.Located in Hangzhou City,China,the West Lake is a national-level scenic spot and a world heritage cultural landscape.It provides key ecosystem services for the city and has a significant impact on the urban ecological environment and the well-being of citizens.The West Lake has undergone an 1800-year governance process in history,realizing the harmonious coexistence with Hangzhou City.Since modern times,due to the rapid development of urbanization and industrialization,the water quality of the West Lake and its freshwater ecosystem have been greatly damaged.Since 2002,Hangzhou City has achieved the overall restoration of the West Lake ecosystem through a series of measures,such as water diversion projects,dredging projects,and the West Lake comprehensive protection project,and the water environment and lakeshore landscape have been greatly improved.This study analyzed the restoration technology of the West Lake ecosystem from two scales of the watershed and the site and discussed the water ecological governance system of the West Lake in the past 20 years.Through thedata analyses of the West Lake land use,vegetation,TP,TN,NH_(3)-N,COD_(Mn) and other multi-environmental factors,the results showed that the water quality,transparency and eutrophication of the West Lake had been greatly improved.At the same time,the application of large-scale restoration methods and technologies also required long-term observation,and attention should be paid to the proliferation of alien species and the loss of heritage value,so as to further avoid potential ecological risks caused by ecological restoration.

Advanced Treatment of Biologically Treated Chemical Comprehensive Wastewater by Nano-TiO2 Photocatalytic Oxidation

Nano-TiO2 photocatalytic oxidation was used to perform the advanced treatment of biologically treated chemical comprehensive wastewater. The effects of reaction time,nano-TiO2 dosage and initial p H of the wastewater on the removal rate of COD were tested. The GC/MS and EEM techniques were used to qualitatively analyze organic compounds in the wastewater before and after treatment. The result showed that after the biologically treated chemical comprehensive wastewater was treated by nano-TiO2 photocatalytic oxidation under the conditions of reaction time 3 h,nano-TiO2 dosage 8 g/L,and pH 8. 0,the effluent COD was 61. 9 mg/L and its removal rate was 63. 8%. Additionally,the species of organic pollutants reduced from 12 to 6. Meanwhile,the content of humic-like and fulvic-like substances dropped dramatically.

Design of comprehensive test system for detecting overlying strata mining-induced fractures on surface with radon gas

Based on radon gas properties and its existing projects applications, we firstly attempted to apply geo- physical and chemical properties of radon gas in the field of mining engineering, and imported radioac- tive measurement method to detect the development process of the overlying strata mining-induced fractures and their contained water quality in underground coal mining, which not only innovates a more simple-fast-reliable detection method, but also further expands the applications of radon gas detection technology in mining field. A 3D simulation design of comprehensive testing system for detecting strata mining-induced fractures on surface with radon gas (CTSR) was carried out by using a large-scale 3D solid model design software Pro/Engineer (Pro/E), which overcame three main disadvantages of ''static design thought, 2D planar design and heavy workload for remodification design'' on exiting design for mining engineering test systems. Meanwhile, based on the simulation design results of Pro/E software, the sta- bility of the jack-screw pressure bar for the key component in CTSR was checked with a material mechan- ics theory, which provided a reliable basis for materials selection during the latter machining process.

Suitability Evaluation on the Information Service System of "Agricultural Science and Technology 110" in Sichuan Province, China

Method of fuzzy comprehensive evaluation is used to carry out suitability evaluation on the information service system of "Agricultural Science and Technology 110" in Sichuan Province, China. Analytic hierarchy process (AHP) and expert consultation method are used to determine the evaluation index system and index weight. Suitability effect of the information service system of "Agricultural Science and Technology 110" is taken as the target layer. The five indices at criterion layer are the organizational mode of agricultural information service, the support system of agricultural information resources, the agricultural information transfer system, the capital source of agricultural information service, and the support system of agricultural information service. And the index layer includes the talent team of agent service, the interaction between the subject and object, the accuracy of agricultural information, the convenience of agricultural information transfer, the adequacy of fund, the efficiency in the use of fund, the status of information infrastructure and so on. Evaluation result shows that the information service system of "Agricultural Science and Technology 110" in Sichuan Province is suitable for the rural economic development at present. The major factors restricting the information service system are the lack of continuity, the weak infrastructure of agricultural information infrastructure, and the relatively low education level of agricultural producers. Therefore, we should further explore and improve the operation mechanism of agricultural information service, expand the capital source of agricultural information service, strengthen the construction of agricultural infrastructure, and ensure the continuous operation of information service system.

Study on the partner selecting method of strategic alliance inhigh and new technology enterprises

A successful and effective strategic alliance involves many factors, of which selecting a proper partner is the most important factor to achieve the success of the alliance. In view of the characteristics of strategic alliance in high and new technology enterprises and according to the analysis on the standards of partner selecting and the factors of the success of alliance, this paper does some deeper research on the partner selecting and the alliance evaluation process from the perspective of different strategic levels by using a fuzzy comprehensive evaluating method, thus providing a method to select the alliance partner for high and new technology enterprises in China.

“岗课赛证”融合育人模式探索与实践——以《无人机技术》为例

为紧跟职业技能人才发展需求,提高人才培养质量,以无人机技术为例,从职业岗位出发,将技能竞赛和证书的考核要求融入教学内容,基于“岗课赛证”四位一体化教学改革,设计了典型工作模块,并从课程设计、教学实施与成效、教学反思与改进方面进行探索与实践,突出虚实结合,强调德技双修,课堂教学采用“三段-八步”模式展开,注重过程考核,实现以赛证促学、促教,教学效果良好,以期能为相关专业课程开展“岗课赛证”教学改革提供参考。

谷子新品种及其轻简高效生产技术的综合评价

冀谷39是国家谷子高粱产业技术体系“十三五”期间的重大研发成果之一,其特点突出且实现了品种经营权转让,但在实际生产过程中出现播种不匀、产量不稳、收割损失以及种植户不认可等问题。为更好解释、澄清上述问题,进一步做好冀谷39及其轻简高效生产技术的示范推广工作,通过开展实地调研,采用STEM系统评价方法,从科学可行性、技术可行性、经济可行性、模式可行性4方面,开展冀谷39及其轻简高效生产技术经济评价。评价结果显示,该品种及轻简高效生产技术推广属可行范畴,并且与其他谷子和玉米相比,在增产、增收以及生态效益方面表现优异。因此建议以政府、科研、经营主体及农户等多方共同协作,实现优质新品种的推广示范,使适应性优良的新品种及高效的配套栽培技术得到更广泛的推广应用。

中国迈入全面建设世界经济强国新征程

党中央提出,到2035年,中国特色社会主义现代化建设任务和发展的总体目标是,经济实力、科技实力、综合国力大幅跃升,达到中等发达国家水平。中华人民共和国成立70多年,创建了自主独立完整的工业和国民经济体系。改革开放40多年,中国取得了令世界瞩目的巨大的经济和科技成就,已经成为重要的创新型国家。新时代,中国确立了支撑有力的强国方略,加速从传统工业化向新型工业化转变,正在朝着创新强国的方向跨越,迈入全面建设社会主义现代化强国新征程。中国不仅创造了当代世界经济史上的奇迹,成为世界经济增长的动力之源与稳定器,而且也成为世界首屈一指的经济大国、制造大国、农业生产大国、创新大国、对外贸易大国、现代化基础设施大国、市场主体创业大国;中国经济实力、产业实力、科技实力、贸易实力、基础设施实力以及综合国力日益跃升壮大。为此,中国全面建设社会主义经济现代化强国是建设社会主义强国的经济基础与重中之重,要继续提高经济实力、充分发挥作为世界最大规模、最具竞争力市场主体的积极性和创造性,全面建成世界经济强国。

科技成果转化农学创新综合实验的探索与实践

探索将科技成果“香稻增香增产栽培技术”转化为农学专业的综合实验,形成“香稻增香增产栽培技术应用与香气测定分析”创新综合实验,包括了田间实验设计、田间调查与取样、室内测定与分析、实验报告撰写等环节的实验教学体系。通过多途径强化创新能力。综合实验的实施有利于调动新农科学生的科研热情,增强科研创新素质和实践能力,实现推动卓越农林人才培养的目标。

北京市南水北调配套工程调蓄工程勘察关键技术

北京市南水北调配套工程调蓄工程是北京市“26213”供水格局的重要组成部分,工程分布于北京市西、北、南不同地区,场地建设环境条件复杂,地层结构分布及组合多样,水文地质条件复杂,工程建设面临诸多地质问题及难题。工程勘察成果全面、涉及面广、涵盖工程勘察综合类的全专业领域,完成专业全面的技术成果文件与研究报告60余册,发表学术论文50余篇,取得七大方面技术创新、30余个技术创新点。勘察总体工作思路、技术路线、研发的创新技术、利用的先进手段等方面具有实践推广价值,特别是对城市复杂地质环境条件下建设城市供水调蓄工程具有借鉴作用。

技术转移对接信息传递模式研究

梳理现有技术转移对接过程中平台传播型、第三方介入型、供需双方直接对话型以及基于智能匹配的供需双向信息传递模式等四种信息传递模式。构建基于智能匹配与社交网络技术的精准、高效信息传递模式,需要提高技术供需双方画像、科技中介画像的精准性。并融合现有智能匹配模式的优点,提出基于兴趣触发,科技中介由被动介入向主动、精准介入转变的线上对接交流信息传递新模式,以进一步提升技术转移对接效率。

跨境电商改革与出口企业数字技术创新——基于跨境电子商务综合试验区的准自然实验

跨境电子商务综合试验区建设是我国积极推进制度型开放的重要举措,税费优惠和管理服务完善等跨境电商改革不仅能够激励外贸增长,还会对出口企业产生成本降低效应、人力资本提升效应和内部治理优化效应等积极影响,从而促进出口企业的数字技术创新。将跨境电子商务综合试验区建设作为一项准自然实验,采用沪深A股出口企业2007—2020年的数据,运用多期双重差分模型分析发现:跨境电子商务综合试验区建设(跨境电商改革)显著促进了试验区出口企业的数字技术发明专利增长,跨境电商改革可以通过降低融资成本和经营成本、提高技术人员占比和高学历人才占比、提升公司治理水平和内部控制质量等路径促进出口企业的数字技术创新,跨境电商改革对融资约束程度较高、地区人力资源丰富、ESG表现较差、环境不确定性较强的出口企业具有更为显著的数字技术创新促进作用。应持续推进和不断深化跨境电商改革,并充分发挥制度型开放对企业创新发展的激励作用。

红土镍矿酸浸渣综合利用进展

近年来随着不锈钢及新能源用镍需求的增长,红土镍矿湿法提镍工艺得到更多应用,相应的红土镍矿酸浸渣堆存量也迅速增加,对此类固废进行科学消纳和资源综合利用迫在眉睫。针对红土镍矿酸浸渣有害元素硫、有价金属铁含量高的特点进行综合利用新技术、新装备研究对红土镍矿湿法冶金工业的持续发展具有重要的理论和现实意义。主要介绍红土镍矿酸浸渣的湿法冶金形成过程及其成分组成和物理化学性质,较为系统地梳理了红土镍矿酸浸渣在尾矿坝堆积、地下压滤回填和深海填埋等直接处理方法,提取利用铁、铬、铝、稀土等有价金属资源,消纳制备硅藻土、陶粒、矿物纤维等建筑材料、制备锂电池电极、沸石等高附加值材料综合利用技术上的研究进展,展望了红土镍矿酸浸渣流态化提铁降硫技术及装备的发展前景。

工程教育专业认证背景下“食品工艺学综合实习”课程教学改革

工程教育专业认证是高校工程教育全球化的新时代要求,也是规范工程教育和提升专业内涵建设的良好契机。“食品工艺学综合实习”是食品科学与工程专业的核心工程课程,结合工程教育的专业认证要求,拟针对“食品工艺学综合实习”的实践教学理念、教学内容、教学方式及考核方式的改革进行较为系统化的探讨,以期把学生培养成具有创新能力和解决复杂工程难题能力的新时代高素质应用型人才,同时在改革中对教师提出了新的要求。

渤海海峡跨海通道工程区海域三维地应力测试

跨渤海通道海域缺乏实测地应力基础数据,而海域钻探原位实测又承担着巨大风险与重重困难,为取得工程区现今地应力场特征第一手资料,利用以水压致裂地应力测量为主,以空心包体、非弹性应变恢复、差应变、声波各向异性法为辅的综合地应力测量技术,对研究区海域开展三维地应力测试与研究,建立了线性回归方程,得到了回归拟合曲线。结果表明,渤海海峡最大水平主应力σH、最小水平主应力σh与垂直主应力σv均随测试深度的增加呈线性增大规律;海峡南部地应力状态存在σH>σh>σv的关系,处于逆冲应力状态,应力场方向为NE,最大水平主应力大于垂直主应力,区域内构造力处于主导地位;海峡北部应力状态为σH>σv>σh,有利于走滑断层活动,应力场方向为NE,区域内构造力处于主导地位;整个工程区内地应力各分量值之间相差不大,远远小于区内断层活动应力值的下限,表明研究区目前处于稳定状态。研究结果符合一般地应力测量规律,测试流程符合地应力测试要求,测试数据可用于分析区域地应力状态。

四川宜宾稻米品质的影响因素及稻谷优质生产的综合技术解析

四川宜宾夏季气温高、湿度大,不利于水稻形成优质米。本文结合宜宾水稻生产和加工的实际情况,从品种、温光、土壤、栽插密度、施肥、病虫害、收获、翻晒、储藏和稻谷加工等方面,分析它们对水稻稻米品质的影响,提出了针对性的利于形成优质稻的技术措施,为生产和加工出优质稻米提供比较系统的技术参考,确保消费者最终能吃上优质可口的米饭。

教育、科技、人才一体推进背景下高等教育对基础研究资助的新需求

基础研究是整个科学体系的源头,是所有技术问题的总机关,目前正在由快速增长转为高质量发展。在这个关键转折点上,国家自然科学基金作为我国基础研究主要的资助渠道,如何在教育、科技、人才的统一战略布局下优化资助,成为了首要关注的问题。在此背景下,本文依据党的二十大报告中“实施科教兴国战略,强化现代化建设人才支撑”的战略部署,深入阐述了新形势下基础研究资助面临的挑战,分析了国内外基础研究的发展动态和需求。通过调研,发现了我国在人才、学科教育、科研组织模式等方面的不足,总结了高等教育对于基础研究资助在学科建设、产学研一体化、人才培养等方面的新需求,并以南京大学为例进行了阐述说明,以期为国家自然科学基金的全面深化改革提供具体的建议和决策参考。