Totally found 10042821 items.

  • [专利] 乙烯-乙酸乙烯酯共聚物/改性蒙脱石纳米复合材料及其制法
    本发明公开了一种乙烯-乙酸乙烯酯共聚物/改性蒙脱石纳米复合材料,该复合材料是由乙烯-乙酸乙烯酯共聚物、改性蒙脱石和抗氧剂组成,其中乙烯-乙酸乙烯酯共聚物和改性蒙脱石的配比(重量比)是:乙烯-乙酸乙烯酯共聚物93~98%、改性蒙脱石2~7%,抗氧剂是乙烯-乙酸乙烯酯共聚物重量的0.1~0.4%。其制备方法是:将乙烯-乙酸乙烯酯共聚物、改性蒙脱石和抗氧剂按比例混合;将混合物料,在105~130℃温度下熔融共混,即得到纳米复合材料。含有少量改性蒙脱石的乙烯-乙酸乙烯酯共聚物纳米复合材料的拉伸强度、撕裂强度和杨氏模量等均比乙烯-乙酸乙烯酯共聚物有较大提高,可拓宽乙烯-乙酸乙烯酯共聚物的应用领域。
  • [资讯] 省直工委考察我院“海南省先进工作者”人选
    8月4日 上午,省直工委机关党委专职副书记李统助、案件审理室肖友忠莅临我院考察我院推荐的“海南省先进工作者”人选陈绵才同志。李统助一行与我院职工座谈听取职工的意见,并征求了党委书记意见。 座谈会上,院组织人事处处长邢福能、机关党委专职副书记施新民、党务干部王彩霞、纪检干部王海杰以及植保所肖彤斌、谢圣华等9名职工代表共13人对陈绵才同志的表现谈了看法,大家普遍认为陈绵才同志爱岗敬业,学术水平高;关心职工,重视干部培养,努力为干部谋福利;他所领导的农业环境与植物保护研究所各项制度健全,职工凝聚力强,科研立项多,科研平台建设齐全,科研成果显著,职工福利好。 座谈会后,省直工委领导就推荐陈绵才同志为“海南省先进工作者”事宜征求了我院党委钟鸣明书记的意见,钟书记充分肯定了陈绵才同志的工作,并对其本人给予了高度评价。钟书记表示,推荐陈绵才同志为“海南省先进工作者”人选,广大职工的意见和院党委的意见相符,希望最终能够得到上级表彰,以激发我院广大科技工作者工作热情,为海南农业进步做更大贡献。
  • [专利] 一种​玫瑰​的​种植​方法
    (CN106386035) 本​发明​涉及​种​玫瑰​的​种植​方法,属于​花卉​种植​领域,具体​包括​以下​步骤:首先,选择​适宜​种植​玫瑰​的​土地,建造​大棚,将​土地​施以​由​自制​有机肥、磷肥、镁​肥​制得​的​自制​基肥​并​整​墒,然后​移栽​玫瑰​植株;每年​冬季​使用​由​自制​有机肥、磷肥、钾肥、镁​肥​制得​的​自制​复合​有机肥;日常​勤​施​薄​肥,间隔​定时间​喷淋​由​自制​有机肥、磷肥、钾肥​制成​的​营养液;其中​所​述​自制​有机肥​是​由​玫瑰​腐​枝、豆粕、花生​渣、柚子​皮、鱼骨、蟹壳、人粪尿​按照​特定​比例​发酵​制成;最后​注意​剪枝​及​灭虫。本​发明​提出​的​整体​种植​方法​使​玫瑰​植株​成活率​高,还能​防止​病虫害,节约​肥料,降低​生产成本,提高​作物​亩产量,所得​玫瑰花​质量​较好,本​方法​适用于​大规模​系统化​繁殖,实际​操作​性强。
  • [专利] 一种​皮带​压​边​机
    (CN203653577U) 本​实用​新型​提供​了​一种​皮带​压​边​机,包括:机架、电机、轴承​架,所​述​的​机架​上​设置​有​电机、轴承​架、传动轴,所​述​的​传动轴​一端​设置​在​机架​与​轴承​架​交接处,且​另一​端上​设置​有主​传动轮、大​齿轮,所​述​的​电机​上​设置​有​离合器、转轴、传动轮,所​述​的​传动轮​通过​皮带​与​主​传动轮​连接,所​述​的​轴承​架上​设置​有​轴承​座、压​边​辊,所​述​的​压​边​辊​的​两端​穿在​轴承​座上,且​一端​安装​有小​齿轮,所​述​的​小齿轮​与​大​齿轮​啮合,所​述​的​离合器​设置​有​离合​开关,所​述​的​离合​开关​的​一端​设置​有​踏板。本​实用​新型​具有​结构​简单、便于​使用​的​优点。
  • [期刊] Correlation of the Debye sheath thickness and (Cr,Al)N coating properties for HPPMS, dcMS, CAE and PCAE processes
    AbstractPhysical vapor deposited (PVD) coatings are widely-used in tool and component applications, where the predominant aims are the enhancement of the lifetime and an improvement of the economic efficiency. The achievement of these aims amongst others strongly depends on a homogeneous distribution of the coating properties with respect to the entire functional surface, in particular on complex-shaped tools. In order to obtain a sufficient coating homogeneity, pulsed high power plasma processes such as the high power pulsed magnetron sputtering (HPPMS) or the pulsed cathodic arc evaporation (PCAE) has to be chosen. In order to characterize the influence of both technologies on the coating homogeneity, the Debye sheath thickness sDat the substrate side was determined, which is expected to strongly correlate with the coating homogeneity on complex surfaces, since it is a measure for the shielding of charged coating atoms. Measurements with varying pulse parameters were performed. In addition, as reference a direct current magnetron sputtering (dcMS) and cathodic arc evaporation (CAE) process were conducted, respectively. As it is widely used as protective coating for tools in many applications, the coating system (Cr,Al)N was chosen. In the first step, the Debye sheath thickness was determined by means of Langmuir probe. A Debye sheath thickness from sD=430μm to sD=48μm was found for the different processes and parameters. In the second step, the (Cr,Al)N coatings were deposited with selected process parameters on structured tungsten carbide substrates. The coating morphology, coating thickne
  • [专利] Process for producing a nanofibrillar cellulose hydrogel
    (WO2016193548) A process for producing a nanofibrillar cellulose hydrogel comprises obtaining bleached cellulose pulp fibers and providing an aqueous suspension thereof; and subjecting the cellulose pulp fibers in the aqueous suspension to at least 2 cycles of high pressure mechanical disintegration to obtain a nanofibrillar cellulose hydrogel and thereby reducing the number of viable microorganisms present in the suspension by a factor of at least 102; wherein all steps of the process after obtaining the bleached cellulose pulp fibers are performed under conditions of ISO 8 of ISO 14644-1 cleanroom standards or stricter. A nanofibrillar cellulose hydrogel, a system for producing the same and the use of a disintegrating apparatus are also disclosed.
  • [资讯] 力争破解城市地下管网建设落后局面
    8月28日,由湖北兴欣科技股份有限公司、武汉理工大学、浙江大学和湖北省标准化与质量研究院等7家单位共同起草的湖北省地方标准《多重增强钢塑复合压力管》顺利通过专家评审。据悉,该标准填补了我国大口径钢塑复合压力管行业空白,将使我国城市地下管网建设落后,渍水严重局面彻底改观。 目前,我国城市的市政水利工程大多使用球墨铸铁管、钢管、钢筋混凝土管、聚乙烯管等传统管材,这几种管材抗内压低,管体笨重,口径小,易腐蚀,易污染水质,环保性能差,不能承受高压力,而且每年仅腐蚀等原因造成的泄漏量就超过20%,并容易造成水的二次污染,是我国城市每到夏季汛期就排水不畅、渍水严重的主要原因之一。 “十三五”期间,我国将大力发展塑料管道行业,加大绿色环保、节约能源的塑料管道产品推广与应用。2014年,国务院发出《关于加强城市地下管线建设管理的指导意见》,明确提出,力争用5年时间,完成城市地下老旧管网改造,用10年左右时间,建成较为完善的城市地下管线体系,并提出在36个大中城市开展地下管廊试点工程。2015年4月,国务院发布《水污染防治行动计划》,再次要求全面加强配套管网建设,加快实施雨污分流改造,对使用年限超过50年和管质落后的供水管网进行更新改造(2020年前更新改造9.23万公里,新建管网18.53万公里)。到2017年,全国公共供水管网漏损率控制在12%以内,到2020年,漏损率控制在10%以内。 多重增强钢塑复合压力管是以高密度聚乙烯塑料与碳素结构钢冷轧钢带及优质碳素结构钢钢网为原料,通过连续挤出方式加工成复合带材后,再经过缠绕、塑料焊接加工而成的一种缠绕管道,主要用于城镇水源、海水淡化、市政给水、排水及水利工程。该管材兼具PE管防腐蚀性能好,可减少因腐蚀导致的渗透及二次水污染,并且由于加入了高强度的钢丝和钢带,极大增强了原有管材的环钢度,能获得更高的耐压等级,更难能可贵的是该管材口径可高达2600mm,实现了我国管道行业口径质的飞跃,是目前国内口径最大的钢塑复合压力管。 该管材的成功研制不仅解决了我国目前只有小口径管材的难题,也提高了管材的耐高温、承压、耐压能力。因其良好的高强度、低线性膨胀系数和抗蠕变性、耐腐蚀性能以及优异的水力特性及抗冲击性,产品一经面世,便受到管道行业的称赞和市场的青睐。 专家组一致认为,该标准符合国家相关法规规范和产业发展政策要求,结合湖北省实际情况,提出了多重增强钢塑复合压力管标准,对市政工程、水利工程、海水淡化工程等建设的发展与规范具有重要的指导作用,尤其在改变我国城市管廊建设落后、城市道路遇大雨即渍水的窘迫现状方面,将发挥巨大作用。同时,专家组并建议在地标工程应用基础上,将该标准进一步提升为行标和国标。 评审专家组由来自湖北大学、湖北省建材协会、中信建筑设计研究总院、中南建筑设计院、湖北省水利水电科学研究院、武汉市给排水工程设计院和湖北工业大学的7位专家教授组成。 编辑:徐冰冰
  • [期刊] Convenient synthesis of N-substituted beta-lactam-4-carboxylates
    When simple beta-amino esters were treated with cyanate ion, dihydrouracils were formed. However, the presence of the alpha-carboxylate group in aspartic ester substrates hinders the formation of the pyrimidine ring. Instead, treatment of aspartic esters with carbonate bases yields N-substituted beta-Flactam-4-carboxylates in excellent yields, representing a green, convenient, and efficient synthesis of these biologically interesting molecules. (C) 2018 Elsevier Ltd. All rights reserved.
  • [会议] Support of VSC-HVDC to the restoration of weakly connected systems: the Sardinia case
    Power system restoration following large blackouts critically relies on the activation of black start units and/or the availability of restoration paths from alive neighbouring networks. Moreover, operating constraints on voltage and frequency are more difficult to meet than in normal conditions, due to the weakness of the grid and the lack of control resources. The speed and reliability of the process depend on the resources that are involved, the number of manoeuvres needed, and the performances of the control systems. Redundancy of solutions and resources enhances the probability of an efficient restoration. The present paper intends to illustrate the potential benefits of a VSC-HVDC system in the restoration of the Sardinian power system in a 2020 scenario. The power system of Sardinia island is a relatively small one, connected to the continental European system via two HVDC links, one of which has a third terminal in Corsica island. Connection to Corsica is also assured by an AC line. In particular, the paper envisages the upgrade of the existing SACOI (Sardinia-Corsica-Italy) HVDC link by adopting VSC technology, and it compares a conventional restoration scenario of Sardinia against scenarios where the VSC-based SACOI supports the restoration process, acting either as a black start unit or as a reactive power support device (STATCOM). The VSC allows to achieve advantages such as greater flexibility in the restoration process and stable control of the operating quantities. The work herein reported has been carried out in the context of Demo 3 of the Best Paths EU research project.
    关键词: High Voltage Direct Current;Restoration;Voltage Source Converter
  • [期刊] 大学生社会责任感教育中的协同育人路径探究
    加强大学生社会责任感教育工作,是现代德育的重要内容,是一项重大的教育任务和战略工程.根据大学生社会责任感缺失的具体表现及多方原因,在厘清大学生社会责任感教育重要性与协同育人必要性的基础上,分析高校、社会、家庭和个人四方育人主体角色定位和功能,从树立理念、搭建平台、保障机制和环境氛围四个维度,提出大学生社会责任感教育主体协同育人路径,为高校德育有效开展提供依据与参考.
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