416 research outputs found
Development of Silica Aerogel Production Technology
二氧化硅气凝胶,因其在孔结构等多方面的优异性能,在许多领域具有重要的应用,如高端保温材料。虽然其可大规模用作涂料消光剂、催化剂载体、医药负载、食品营养元素负载、香料缓释剂等,然而由于规模化生产的技术问题及生产成本,目前二氧化硅气凝胶实际尚未大规模应用。以水玻璃为硅源制备二氧化硅,其来源广泛、成本低廉,已成为产量最高的生产工艺。但目前行业中以该方法制备的二氧化硅性能低下,污水排放严重。为此,本研究在课题组前期以水玻璃为硅源的间歇加压碳化法、间歇及连续超临界二氧化碳干燥法研究制备二氧化硅气凝胶的基础上,开发连续的加压碳化反应以及新的连续超临界干燥方法和装置。通过这两个连续工艺的创新,解决硫酸法的污...Silica aerogel has potential applications in wide areas due to its specific properties, for example, it has been used as a super thermal insulation material. It can also be used as the matting agent, catalyst, carriers for catalyst, flavors and fragrances, food, and so on, but the uses have been limited due to the technical and cost problems. The production of silica powders with sodium silicate h...学位:工学硕士院系专业:化学化工学院_工程硕士(化学工程)学号:2062014115144
The role of insulin-like growth factor 2 mRNA binding protein 2 (IGF2BP2) in the development of lung cancer
背景:当今世界,癌症成为威胁人类健康的头号杀手,其中肺癌更是最常见的恶性肿瘤之一,由于其早期症状不明显,恶性程度高,发现时往往已是中晚期,其每年发病率和死亡率均位于所有癌症的前列。尽管手术方式和化学药物不断更新,但均不能达到较好的治疗效果,肺癌的发病率和死亡率仍没有降低的趋势。因此,早期发现、早期治疗成为治愈肺癌的关键。随着分子生物学的进展,肿瘤相关抗原(TAA)逐渐成为了现代医学的关注热点,因为它不仅能使肿瘤患者早期得到诊断,而且也为分子靶向治疗提供了分子基础。类胰岛素生长因子2mRNA结合蛋白(IGF2BP2)是一种细胞质蛋白,被证明和多种肿瘤的发生发展有关,如肝癌、乳腺癌、神经胶质瘤、食...Background: At present, cancer has become the leading threat to the health of mankind. The lung cancer is one of the most common malignant tumors worldwide. For the hidden symptoms and high malignant of initial lung cancer, it is always late when the disease is diagnosed and the morbidity and mortality rates are always at the top. Despite of continuous development of surgery and chemical drugs, th...学位:医学硕士院系专业:医学院_外科学学号:2452014115354
Resume: LIU Da Hong
This resume is scripted in Chinese; a brief introduction of the artist is also included in the file. A copy of the artist\u27s business card is attached also to this document entry. (Jerry Wu\u2723).https://digital.kenyon.edu/zhoudocs/1169/thumbnail.jp
Bibliography and Artist Statement: LIU Da Hong
This bibliography + artist statement is scripted in Chinese. It was published in Fine Art Literature (美术文献) in December 1996. (Jerry Wu\u2723).https://digital.kenyon.edu/zhoudocs/1170/thumbnail.jp
Artist Statement: LIU Da Hong
This artist note is scripted majorly in Chinese. (Jerry Wu\u2723).https://digital.kenyon.edu/zhoudocs/1172/thumbnail.jp
Correspondence: LIU Da Hong to ZHOU Yan on the Submission of Artworks to the Guggenheim Exhibition
This letter is scripted in Chinese. (Jerry Wu\u2723).https://digital.kenyon.edu/zhoudocs/1171/thumbnail.jp
Reach on the Emotional Music Aesthetics
音乐是人的创造物,情感是人的内在生命力最直接的表现,情感也必定以人的存在为本原。情感论音乐美学自有音乐美学思想产生伊始就占据了重要的历史地位。在西方音乐美学史上,可以说,在不同的历史时期、不同的学术流派、不同的理论体系之中,都渗透有情感论音乐美学的影响。千百年来,情感论音乐美学思想不断被阐释、丰富、反对、攻击;在艺术实践领域中发展、充实、受冲击、进一步发展、深化,虽有起落但总体上长盛不衰。十九世纪之前,从古希腊发端,到文艺复兴,到十八世纪启蒙运动时期,再到十九世纪浪漫主义时期,情感论音乐美学思想以绝对的优势主导着西方音乐美学思想,直至十九世纪后期自律论音乐美学出现,对之产生巨大的冲击。但是,也...Music is person's creation, emotion is the most direct intrinsic vitality of the performance, and it also surely takes person's existence as a source. From the beginning of music aesthetics, the emotional music aesthetics have occupied an important position .It can be said ,in the history of Western music aesthetics, Emotional music aesthetics permeated in different theory of different historical ...学位:文学硕士院系专业:人文学院中文系_艺术学学号:2005130007
he Design and Implementation of the Public Security Information System Based on Components
近年来,随着公安信息化应用的快速发展和“金盾工程”建设的全面推进,围绕实战决策对情报研判和信息共享的需求,出现了各种警务机制的创新,但也存在着因资源缺乏整合、信息缺乏共享,造成在各警种、部门在情报信息工作方面各自为政、粗放经营、低水平运转的现象,不仅使有限的经费投入得不到充分利用,而且导致情报信息传递渠道不畅、研判水平不高、综合效益不好。 组件是对数据和方法的简单封装。在公安情报信息系统中,组件是由构件+业务逻辑封装的业务工具,是应用功能的一个基本组成部分,通过组件模型、组件方法可以完成一个相对独立的业务处理逻辑,并能与其他组件松散耦合完成相应完整的业务功能。通过对公安业务逻辑的分析,归纳出...In recent years, as the fast developments of the application of police informatization and the full-scale establishment of the "Golden Shield" project, lots of creations about police system have been carried out, center on the actual decisions about the needs of intelligence analysis and sharing of information. However, there are problems of isolation,waste and low efficiency among categories and ...学位:工程硕士院系专业:软件学院_工程硕士(软件工程)学号:X200623010
Design and Implementation of Training Management System for Drug Rehabilitation Center
目前,全国查获的吸毒人员已超过百万人次,戒毒所也面临了巨大挑战。随着各种新型毒品的出现,强制戒毒的方法和技能也要随之做出调整。戒毒所的工作人员需要不断的学习新的戒毒模式,心理健康知识等方面的知识以提升工作能力。 为了更好地进行工作人员培训,本文设计和实现一款针对戒毒所工作人员的培训管理系统。该系统是一套用于实现戒毒所培训管理智能化和规范化,提高培训工作质量和效率的系统。系统采用B/S架构,以Asp为开发平台,结合SQL数据库和Web技术进行开发。本项目将业务需求归纳为六个功能,具体包括:系统管理、培训管理、培训流程管理、帮扶管理、档案管理和报表管理等等。系统清晰地体现了各项功能的层次关系,它...At present, China has more than one million people seized drug addicts, Drug rehabilitation center is also facing a huge challenge. With the emergence of a variety of new drugs, compulsory drug treatment methods and skills should be adjusted. The staff of drug rehabilitation center need to learn new methods and mental health knowledge to enhance the competence at work. This dissertation designs a...学位:工程硕士院系专业:软件学院_工程硕士(软件工程)学号:X201323104
TNF-α对成骨细胞程序性坏死的影响及相关机制的研究
目的分析TNF-α对成骨细胞程序性坏死的影响并分析其机制。方法分离并常规培养小鼠乳鼠成骨细胞,采用TNF-α干预诱导细胞程序性坏死,Nec-1干预抑制细胞坏死。并采用正常培养的成骨细胞为正常对照组。MTT法检测细胞增殖情况;Tunel和Caspase 3双染法检测细胞的程序性坏死情况;Western blot检测细胞RIP1、RIP3、MLKL蛋白表达水平。结果与正常对照组比较,TNF-α组增殖活性降低,程序性坏死数量增加(P<0.05);与TNF-α组比较,TNF-α+Nec-1组增殖活性显著增加,程序性坏死数量降低(P<0.05);随着时间延长,各组之间的差异更加显著(P<0.05)。与正常对照组比较,TNF-α组RIP3、MLKL蛋白表达降低(P<0.05);TNF-α+Nec-1组RIP3、MLKL蛋白表达高于TNF-α组(P<0.05)。结论 TNF-α能够抑制成骨细胞增殖,促进细胞发生程序性坏死,这可能是通过降低成骨细胞的RIP3、MLKL蛋白表达来完成的。福建省科技厅科技平台建设项目(2015Y2001);;福建省福州市科技计划项目(2017-S-130-6
- …