高职院校环境思政新模式探索——以湖北工业职业技术学院为例

大学生宿舍作为高校学生管理“五级责任”的基础责任,如何从单纯的住宿职能逐步向教育职能拓展,是学生管理工作面临的重要课题。针对学生宿舍缺乏专业育人队伍、宿舍育人载体单一、宿舍管理模式落后、宿舍文化氛围薄弱等问题,探讨通过完善机制、搭建平台、丰富载体等方式,将学生管理工作前移,把宿舍作为学生思想政治工作的平台、行为习惯养成的基地、培养团队合作精神和提升学生自我管理能力的场所,探索宿舍育人和环境思政,以保障学生安全和校园稳定。

不同焊接工艺下Strenx700钢焊接接头力学性能研究

文中分别采用熔化极气体保护焊(GMAW)和焊条电弧焊(SMAW)对Strenx700低合金高强钢进行焊接试验,制订合理的焊接工艺参数以及焊接保障技术措施,确保焊接接头满足要求,采用硬度计、万能试验机对焊接接头的组织及力学性能进行了分析及测试。

食品添加剂在我国食品加工中的应用现状

食品添加剂在现代食品工业生产中占据着非常重要的地位,与人们的日常饮食安全和身体健康息息相关。综述了我国食品添加剂的定义、作用、种类、相关法律法规和加工特点等,提出了食品添加剂在食品加工应用中存在的问题及相应解决措施,对进一步丰富我国食品添加剂理论研究,推动食品加工业高质量发展具有重要的社会和经济意义。

勤工俭学在推进素质教育中的作用

从全面推进素质教育,深化教育改革,为实施科教兴国战略奠定坚实的人才和知识基础角度出发,着重阐述素质教育的内涵,并对通过发展勤工俭学推动素质教育提出自己的看法。

中国科学院水利部水利科学研究院历史探实

1957年在国务院科学规划委员会的指导下,中国科学院、水利部、电力部和交通部达成协议,决定将中国科学院水工研究室和水利部北京水利科学研究院合并,成立由中国科学院和水利部共同领导的水利科学研究机构。国务院的介入和4个部级机构的共同决策,注定此次合并事件非同寻常,在新中国水利科技发展史上有着重要地位和意义。依据档案、人物传记、报刊、史志资料等,本文对此次合并的缘由、过程、结果,以及国务院科学规划委员会在合并中的作用进行了论述。文章指出,此次合并是国家主导下的一次对全国水利科研力量布局的优化和调整,也是中华人民共和国成立初期为建立高效的水利科研体系而进行的一次积极探索。新机构的成立不仅体现了国家倡导的在科学研究领域增产节约的精神,而且使高级水利研究人才布局进一步优化,确立了新机构在全国水利科学研究中的中心地位,为顺利完成十二年科技规划的水利工作奠定了基础。

The enlightenment of artificial intelligence large-scale model on the research of intelligent eye diagnosis in traditional Chinese medicine

Eye diagnosis is a method for inspecting systemic diseases and syndromes by observing the eyes.With the development of intelligent diagnosis in traditional Chinese medicine(TCM);artificial intelligence(AI)can improve the accuracy and efficiency of eye diagnosis.However;the research on intelligent eye diagnosis still faces many challenges;including the lack of standardized and precisely labeled data;multi-modal information analysis;and artificial in-telligence models for syndrome differentiation.The widespread application of AI models in medicine provides new insights and opportunities for the research of eye diagnosis intelli-gence.This study elaborates on the three key technologies of AI models in the intelligent ap-plication of TCM eye diagnosis;and explores the implications for the research of eye diagno-sis intelligence.First;a database concerning eye diagnosis was established based on self-su-pervised learning so as to solve the issues related to the lack of standardized and precisely la-beled data.Next;the cross-modal understanding and generation of deep neural network models to address the problem of lacking multi-modal information analysis.Last;the build-ing of data-driven models for eye diagnosis to tackle the issue of the absence of syndrome dif-ferentiation models.In summary;research on intelligent eye diagnosis has great potential to be applied the surge of AI model applications.

论生态环境损害赔偿司法确认制度的构建

现有制度体系下,生态环境损害赔偿磋商协议的执行保障依靠民事司法确认制度。生态环境利益的公益属性与民事权益的私益属性形成强烈反差,民事司法确认制度建构以私益为基础,难以满足生态环境利益救济的需要,基于现实需求,生态环境损害赔偿司法确认制度亟待建立。在制度构建过程中,要明确生态环境损害赔偿司法确认制度与民事司法确认制度的差异,把握住生态环境利益的公益属性,将更好地实现受损生态环境利益的救济作为根本追求,以专业性为依托,从申请方式、管辖法院等五个维度完成制度核心的构建,进而保证受损生态环境利益救济的质量与效率。

考虑滑面材质的碎屑流试验堆积特征分析

为分析高速远程滑坡运动与堆积特征,在室内设置物理试验模型,设计级配、坡角、碎屑流质量、滑面材质4种因素,分析各因素对碎屑流堆积特征的影响。研究结果表明:坡角减小、滑面更粗糙使部分颗粒堆积或滞留于坡面,颗粒堆积特征与颗粒完全堆积于坡底时相比存在差异;滑面材质与冲程等堆积特征基本呈负相关,坡角与堆积特征基本呈正相关,二者对堆积特征影响最大;碎屑流质量与堆积特征基本呈负相关,对颗粒堆积特征分布影响较小;级配与颗粒堆积特征无明显相关性。

调水工程输水管道建设对沿线景观格局影响的研究

为了了解调水工程输水管道建设对沿线景观格局的影响,选取南水北调中线一期工程河北省易县段调水工程输水管道建设区域为研究对象,以50-3 000 m划分不同宽度研究区,利用Arc GIS和FRAGSTATS软件,研究了施工建设前、中、后期沿线土地利用类型的变化,并且分别计算不同宽度及整体景观的景观指数,分析管道建设对沿线区域景观格局的影响。研究结果表明：管道工程建设期的对区域土地利用方式产生的影响较为明显和强烈,工程建设对施工作业带两侧100 m范围内影响最为明显。

保健饮料银杏枣汁的生产工艺

具有保健作用的银杏叶提取物 ( EGB)、红枣、枸杞子和蜂蜜制成了枣香宜人、酸甜适口、对心脑血管疾病、老年痴呆症、降低血压等有保健作用的饮料。

工学会与近代工读互助思潮——兼与北京工读互助团比较

五四时期,北京高师工学会通过刊发《工学》杂志、召开研究会、组建工作组等活动,不仅形成了系统的工学主义思想,而且部分会员还对工人阶级的地位和作用有了正确的认识。和工读互助团相比,工学会虽在发展规模方面稍逊,但却是中国工读互助思潮的最早提出者和持续时间最长的实践者,在理论上坚守了比"工读主义"更为宽泛的"工学主义",在实践上也给予了工读互助团很大的支持和鼓励。虽然由于发动者的社会影响和宣传的力度不够、没有制定翔实的计划、缺乏严格规范的管理以及理论方面的诸多不足,工学会最终走向衰落,但它在工读互助思潮中的地位却是应该引起重视的。

Effects of Tobacco Curing on Accumulation of Chemical Components and Aroma Components in Tobaccos

[Objective]The aim was to explore effects of curing technique parameters on chemical components and aromatic material accumulation to formulate a suitable curing technique and for and to achieve tobacco scalding, drying and giving aromat- ic flavor. [Method] With tobacco variety KRK 26 as test materials, the test involved parameters of three curing-techniques in down, middle and upper parts of flue-cured tobaccos in an oven to measure chemical components and aromatic substances in tobaccos. [Result] The effects of curing techniques on total sugar and reducing sug- ar differed upon temperature and humidity. The contents of chemical components, such as total alkaloid, total N and the ratio of sugar/ alkali by moderate temperature and high humidity technique were of significant differences with those by moderate temperature and moderate humidity technique and with low temperature and low hu- midity technique; the chemical components by moderate temperature and moderate humidity were of insignificant differences with the treatment by low temperature and low humidity technique. Total amount of aroma components by different curing tech- niques from high to low was the treatment by low temperature and low humidity technique （461.72 μg/g）, the treatment by moderate temperature and moderate hu- midity technique （450.06μg/g） and the treatment by moderate temperature and high humidity technique （385.12μg/g）, suggesting the content of aromatic substances is high at low temperature and low humidity. [Conclusion] Moderate temperature and high humidity curing technique has significant effects on total alkaloid, total N and the ratio of sugar/ alkali of tobaccos and different curing techniques also affect the total amount of aromatic substances of flue-cured tobaccos.

Mineralogical characterization of tin-polymetallic ore occurred in Mengzi,Yunnan Province,China

A detailed mineralogical characterization of a tin-polymetallic ore from Mengzi,Yunnan Province,China,was undertaken by automated electron microprobe-based mineral mapping and quantitative analysis methods.The results show that the most valuable metal is Sn（0.98%,mass fraction）.The main tin minerals are cassiterite and stannite,which account for 94.90% of total tin.Other metals,such as Cu（0.261%）,Zn（0.612%） and Pb（0.296%） can also be seen as valuable metal to be recovered.Minerals such as pyrrhotite,pyrite,arsenopyrite,sphalerite,galena and chalcopyrite are disseminated in the ore.Quartz,sericite and dolomite are the main gangue.The optimal grinding fineness should be chosen as 0.037 mm to make sure that most of the tin minerals can be liberated from other minerals.

Effects of T9I6 thermo-mechanical process on microstructure, mechanical properties and ballistic resistance of 2519A aluminum alloy

The effects of T916 thermo-mechanical process on microstructures, mechanical properties and ballistic resistance of 2519A aluminum alloy were investigated by optical microscopy （OM）, transmission electron microscopy （TEM）, tensile tests and ballistic resistance test. After T916 treatment, the yield strength, tensile strength and elongation rate of 2519A aluminum alloy reach 501 MPa, 540 MPa and 14%, respectively. And the ballistic limit velocity of 2519A-T916 alloy （30 mm in thickness） is 715 rn/s. The microstructure varies near the sidewalls of crater. The interrupted ageing contributes to these excellent properties of the alloy. During T916 process, the precipitation of Guinier Preston （GP） zone is finer and denser during the interrupted ageing, thus resulting in well precipitated strengthening phase.

Technological mineralogy and environmental activity of zinc leaching residue from zinc hydrometallurgical process

Chemical, physical, structural and morphological properties of zinc leaching residue were examined by the combination of various detection means such as AAS, XRF, XRD, M？ssbauer spectrometry, SEM-EDS, TG-DSC, XPS and FTIR. The toxicity characteristic leaching procedure （TCLP） was used to investigate the environmental activity of zinc leaching residue for a short contact time. The phase composition analysis indicated that the zinc leaching residue mainly consists of super refined flocculent particles including zinc ferrite, sulfate and silicate. The physical structural analysis showed that it has a thermal instability and strong water absorption properties. The results of TCLP indicated that the amounts of Zn and Cd in the leaching solution exceed 40 and 90 times of limit, respectively, which demonstrate that this residue is unstable in weak acidic environment for a short contact time.

Influence of FeCrAl fiber on microstructure and mechanical properties of FeCrAl(f)/HA composites

FeCrAl fiber-reinforced hydroxyapatite（HA） biocomposites（FeCrAl（f）/HA） were fabricated by the hot pressing technique.The metallographic microscopy,X-ray diffractometry,scanning electron microscopy（SEM） and energy dispersive spectroscopy（EDS） were used to observe and analyze the microstructure and composition of FeCrAl（f）/HA composites,respectively.The mechanical properties of FeCrAl（f）/HA composites were measured by the three-point-bending test.The results show that the composite can be reinforced by FeCrAl fiber and enhanced gradually,and then declined with the increase of the content of FeCrAl fiber（0-11%,volume fraction） in the whole range of experiments.Both the HA matrix and FeCrAl fiber integrate very tightly and bit into each other very deeply and counter-diffusion takes place to some extent at two-phase interface.The optimum parameters of FeCrAl（f）/HA composite are diameter of 22 μm,length of 1-2 mm and of volume faction of about 7% for FeCrAl fibers.

Mechanics analysis of vehicle bumping at approach slabs with superelevation

In order to analyze the pavement stress caused by vehicle bumping at an approach slab, a simplified four-wheeled bi- axle vehicle-moving model is proposed. The effect of damping and vibration reduction in the process of vehicle-moving is not considered. Based on the position change of vehicle wheels at the approach slab, the vehicle dynamic vibration equations are summarized. Meanwhile, the undetermined coefficients of the vibration equations are obtained using the boundary and initial conditions of the vehicle. The analytical motion solutions of rear and front wheels at different stages are concluded. Consequently, a four-wheeled vehicle model is developed and vibration equations are provided, which can be used to analyze the impact of complicated stress on pavement. The results show that the excessive stress and stress concentration will occur at the approach slab, and it needs to be strengthened.

Atmospheric oxygen-rich direct leaching behavior of zinc sulphide concentrate

The leaching behavior of main metallic sulphides in zinc concentrate under atmospheric oxygen-rich direct leaching conditions was studied through mineralogical analysis. The results show that the sulphides dissolve obviously except pyrite. Based on the relationship between elemental sulfur and the residual sulphides in the leaching residue, the dissolution of sphalerite, chalcopyrite, covellite and galena is assumed to follow the indirect oxidation reactions, where the acidic dissolution takes place firstly and then the released H2S transfers from the mineral surface into bulk solution and is further oxidized into elemental sulfur. The interface chemical reaction is further supposed as the controlling step in the leaching of these sulphides. The direct electrochemical oxidation reactions are assumed to contribute to the dissolution of pyrrhotite, which is controlled by the diffusion through elemental sulfur layer.

Prediction of mechanical properties of A357 alloy using artificial neural network

The workpieces of A357 alloy were routinely heat treated to the T6 state in order to gain an adequate mechanical property.The mechanical properties of these workpieces depend mainly on solid-solution temperature,solid-solution time,artificial aging temperature and artificial aging time.An artificial neural network（ANN） model with a back-propagation（BP） algorithm was used to predict mechanical properties of A357 alloy,and the effects of heat treatment processes on mechanical behavior of this alloy were studied.The results show that this BP model is able to predict the mechanical properties with a high accuracy.This model was used to reflect the influence of heat treatments on the mechanical properties of A357 alloy.Isograms of ultimate tensile strength and elongation were drawn in the same picture,which are very helpful to understand the relationship among aging parameters,ultimate tensile strength and elongation.

Effect of hot working on microstructure and mechanical properties of TC11/Ti_2AlNb dual-alloy joint welded by electron beam welding process

The influence of hot working on the microstructures of TC11/Ti2 Al Nb dual-alloy joints welded by electron beam welding(EBW) process was investigated. The tensile tests were performed at room temperature for specimens before and after thermal exposure. The results show that the fusion zone of TC11/Ti2 Al Nb dual-alloy joint welded by EBW is mainly composed of β phase. After deformation and heat treatment, the grain boundaries of the as-cast alloy are broken and the fusion zone mainly consists of β, α2and α phases. The fusion zone performs poor property in the tensile test. Specimens before and after thermal exposure all fail in this area under different deformation conditions. The ultimate tensile strength of specimens after heat treatment is up to 1190 MPa at room temperature. The joints by water quenching after deformation have better plasticity with an elongation up to 4.4%. After thermal exposure at 500 °C for 100 h, the tensile strength of the specimen slightly rises while the ductility changes a little. SEM observation shows that the fracture mechanism is predominantly transgranular under different deformation conditions.