检索结果-南通市图书馆

改善剩余污泥厌氧消化产甲烷性能的新策略:导电材料介导微生物种间直接电子传递

在线全文

学校读者我要写书评

暂无评论

应用化工 2024年第4期53卷 918-924页

作者：罗进财王欣芸孙鸿董姗燕田帅朱易春江西理工大学土木与测绘工程学院江西赣州341000 江西理工大学资源与环境工程学院江西赣州341000 赣江流域水质安全保障工程技术研究中心江西赣州341000

综述了近年来关于碳基和铁基导电材料促进DIET产甲烷的研究进展,归纳了直接种间电子传递的机制,总结了碳基和铁基导电材料的结构特征、电子传递机理和强化剩余污泥厌氧产甲烷效果。指出了当前研究存在的不足,并对未来的研究方向做出了... 详细信息

综述了近年来关于碳基和铁基导电材料促进DIET产甲烷的研究进展,归纳了直接种间电子传递的机制,总结了碳基和铁基导电材料的结构特征、电子传递机理和强化剩余污泥厌氧产甲烷效果。指出了当前研究存在的不足,并对未来的研究方向做出了展望。

关键词：剩余污泥厌氧消化直接种间电子传递导电材料

Active-fault-alarm enabled pre-protection scheme in 10G-EPON for smart power grid

在线全文

学校读者我要写书评

暂无评论

The Journal of China Universities of Posts and Telecommunications 2012年第4期19卷 106-109页

作者： BAI Hui-feng wang Bo-tao wang dong-shan LI Ming-wei Communication and Power Utilization Technology Branch Company State Grid Electric Power Research InstituteBeijing 100192China

The active-fault-alarm （AFA） has been developed to achieve fast recovery of various network services, but the false-alarm still exists when applied to 10 Gigabit ethernet positive optical network （10G-EPON） in power grid. To solve this problem, an active fault alarm based pre-protection （AFA-PP） scheme in 10G-EPON system for power grid is proposed in this paper. The AFA-PP scheme takes full advantage of the AFA technologies, and allows conducting pre-protection operation in advance. Analytical and experimental results suggest the better performances of the new mechanism and show that the AFA-PP can solve the false-alarm problem efficiently.

关键词： active fault alarm protection IOG-EPON

Role of Mutant TBP in Regulation of Myogenesis on Muscle Satellite Cells

在线全文

学校读者我要写书评

暂无评论

Current Medical Science 2019年第5期39卷 734-740页

作者： dong-ming ZHAO Sui-qiang ZHU Fu-rong wang shan-shan HUANG Department of Orthopedics Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China Department of Neurology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China

In polyglutamine(PolyQ)diseases,mutant proteins cause not only neurological problems but also peripheral tissue *** all systemic damages,skeletal muscle dystrophy is the *** by studying knock-in(KI)mouse models of spinal cerebellar ataxia 17(SCA17),it was found that mutant TATA box binding protein(TBP)decreases its interaction with myogenic differentiation antigen,thus reducing the expression of skeletal muscle structural proteins and resulting in muscle *** this paper,the role of mutant TBP in myogenesis was *** myofibers were isolated from tibialis anterior muscles of wild type(WT)and SCA17KI *** 1TBP18 staining confirmed the expression of mutant TBP in muscle satellite cells in SCA17Ki *** the BaCl2-induced TA muscle injury,H&E cross-section staining showed no significant change in myofibril size before and after BaCl2 treatment,and there was no significant difference in centralized nuclei between WT and SCA17KI mice,suggesting that mutant TBP had no significant effect on muscle *** the cultured primary myoblasts from WT and SCA17KI mice in vitro,representative BrdU immunostaining showed no significant difference in proliferation of muscle satellite *** primary myoblasts were then induced to differentiate and immunostained for eMyHC,and the staining showed there was no significant difference in differentiation of primary myoblasts between WT and SCA1KI *** findings confirmed that mutant TBP had no significant effect on myogenesis.

关键词： TATA box binding protein spinocerebellar ataxia 17 myoblast myogenesis

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

行为导向教学法在骨科临床带教中的应用研究

中国卫生产业 2024年第11期21卷 205-208页

作者：董超王艳群枣庄市峄城区峨山镇中心卫生院外科山东枣庄277312 枣庄市峄城区峨山镇中心卫生院护理部山东枣庄277312

目的分析行为导向教学法在骨科临床带教中的应用效果。方法选取2021年1—2023年12月枣庄市峄城区峨山镇中心卫生院的50名医学生为研究对象,按照教学方法不同分为对照组和观察组,各25名,分别进行常规临床带教和行为导向教学法。比较两组... 详细信息

目的分析行为导向教学法在骨科临床带教中的应用效果。方法选取2021年1—2023年12月枣庄市峄城区峨山镇中心卫生院的50名医学生为研究对象,按照教学方法不同分为对照组和观察组,各25名,分别进行常规临床带教和行为导向教学法。比较两组实践行为评分、自主学习能力及自我效能评分、理论知识评分、教学满意度。结果教学前,两组实践行为、自主学习能力及自我效能、理论知识、教学满意度评分比较,差异无统计学意义(P均>0.05);教学后,观察组实践行为、自主学习能力及自我效能、理论知识、教学满意度评分均高于对照组,差异有统计学意义(P均<0.05)。结论在骨科临床带教中采用行为导向教学法,可以促进对医学生实践行为能力的培养,同时提升其自主学习能力及自我效能,深化理论知识掌握度,且医学生满意度较高。

关键词：行为导向教学法骨科临床带教实践行为能力理论知识自主学习

维普期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

浅谈商用车发动机缸盖的芯盒工艺设计

现代铸铁 2024年第4期44卷 41-48页

作者：吴晓栋王峰李连杰吕姗姗一汽铸造有限公司无锡分公司江苏无锡214177

通过实际生产案例,介绍了芯盒工艺设计对铸件质量、生产效率及芯盒减重的影响,最后指出:(1)芯盒模具设计时需要考虑生产过程中的质量、效率、成本多方面因素;(2)芯盒的分型面、排气、射砂机构、砂芯出气针、冷铁工艺设计均对砂芯质量有... 详细信息

通过实际生产案例,介绍了芯盒工艺设计对铸件质量、生产效率及芯盒减重的影响,最后指出:(1)芯盒模具设计时需要考虑生产过程中的质量、效率、成本多方面因素;(2)芯盒的分型面、排气、射砂机构、砂芯出气针、冷铁工艺设计均对砂芯质量有比较大的影响,设计时应充分考虑工艺性;(3)灵活运用活块,合理设计砂芯分芯面,热芯盒根据砂芯结构布置电热棒,可以有效提高生产效率;(4)厚大砂芯需进行减重设计,起模方便的情况下可直接减薄厚大部分,起模不便的情况下可采用抽芯工艺进行减薄。

关键词：缸盖铸造模具工艺设计

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

不同窖龄窖池酿造浓香型基酒的风味差异分析

食品科学 2024年第19期45卷 104-111页

作者：敖灵曾珊沈才洪张宿义董蔚秦辉杨艳孙啸涛北京工商大学食品质量与安全北京实验室中国轻工业酿酒分子工程重点实验室北京100048 泸州老窖股份有限公司四川泸州646000

为探究不同窖龄窖池酿造浓香型基酒的物质构成和含量分布规律,采用直接进样、液液萃取、表面活性剂/涡旋辅助液液微萃取结合气相色谱、气相色谱-质谱技术对3个不同窖龄窖池生产的18种浓香型基酒中的风味成分进行定性、定量分析;引入主... 详细信息

为探究不同窖龄窖池酿造浓香型基酒的物质构成和含量分布规律,采用直接进样、液液萃取、表面活性剂/涡旋辅助液液微萃取结合气相色谱、气相色谱-质谱技术对3个不同窖龄窖池生产的18种浓香型基酒中的风味成分进行定性、定量分析;引入主成分分析、偏最小二乘判别分析以及Spearman相关系数法等化学计量方法解构不同基酒酒样间的风味差异。结果表明:在新窖池、30 a以上窖龄窖池、100 a以上窖龄窖池3类不同窖龄窖池生产的18个基酒中分别定性出151、154种和159种挥发性化合物,其中相同类型化合物共148种,占全部已测出化合物总数的93.1%;对其中61种重要风味化合物进行定量分析,己酸乙酯、丁酸乙酯、己酸、丁酸和乙酸在3个不同窖龄窖池酒样中的质量浓度均超过100 mg/L,其中己酸乙酯的质量浓度最高,为1156.4~2142.2 mg/L;化学计量学结果显示,相较于100 a以上窖龄窖池酿造的基酒,新窖池与30 a以上窖龄窖池酿造的2种基酒中风味化合物间的相似度更高,相关研究结果为行业对浓香型白酒窖龄影响酒体风味惯有经验认知提供了一定的数据支撑和进一步验证。

关键词：浓香型基酒风味物质液液萃取气相色谱-质谱法化学计量学

在线全文

学校读者我要写书评

暂无评论

天然气井井筒解堵工作液的研究进展

应用化工 2024年第1期53卷 238-241页

作者：李善建杜进繁贺建英孙冬乔林胜王帅西安石油大学陕西省油气田环境污染控制技术与储层保护重点实验室陕西西安710065 西安石油大学油气田化学陕西省高校工程研究中心陕西西安710065 陕西延长石油有限责任公司延长气田采气二厂陕西延安716000

通过文献调研,分析了各种井筒解堵工作液的解堵机理,综述了各类型常用井筒解堵工作液的应用进展及优缺点;介绍了有机解堵工作液、有机缓释微乳酸解堵工作液、复合型解堵工作液等新型解堵工作液的研究进展;分析了解堵工作液在制备与实际... 详细信息

通过文献调研,分析了各种井筒解堵工作液的解堵机理,综述了各类型常用井筒解堵工作液的应用进展及优缺点;介绍了有机解堵工作液、有机缓释微乳酸解堵工作液、复合型解堵工作液等新型解堵工作液的研究进展;分析了解堵工作液在制备与实际应用过程中存在的问题,并提出了未来解堵工作液的发展趋势。

关键词：解堵工作液井筒堵塞解堵发展趋势

Mechanism of perturbation-combined active control technique for asymmetric vortex flow over slender body at high angle of attack

在线全文

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2011年第10期54卷 2665-2673页

作者： wang YanKui shan JiXiang TIAN Wei DENG XueYing dong JinGang TIAN Xiao Key Laboratory of Fluid Mechanics (Beihang University) Ministry of Education BUAA Beijing 100191 China

Based on the determinability of asymmetric vortices flow over slender body under changeless round grain at high angle of attack,the effect of microblowing set in special position on the behaviors of asymmetric flow is discussed in this paper,including blowing momentum and circumferential locations of the microblowing hole of 0.5 mm in diameter on nose tip.A new kind of active control technique,named perturbation-combined active control technique,which combines the micro-grain and micro-blowing perturbation,was proposed on the basis of the *** control technique can not only change the sign of side force of slender body arbitrarily through changing the vortices positions between yaw-left and yaw-right configuration,but also can make the magnitude of side force variable gradually even at bistable state of asymmetric ***,the interferential mechanism of the perturbation-combined active control technique has also been concluded from this *** tests have been conducted at low speed wind tunnel with subcritical Reynolds number of 1.05×10~5 at angle of attack α=50° in Beihang University,Beijing,China.

关键词： asymmetric vortex perturbation-combined active flow control high angle of attack aerodynamics slender body

Comparative genetic analysis of Arabidopsis purple acid phosphatases AtPAP10, AtPAP12, and AtPAP26 provides new insights into their roles in plant adaptation to phosphate deprivation

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Plant Biology 2014年第3期56卷 299-314页

作者： Liangsheng wang shan Lu Ye Zhang Zheng Li Xiaoqiu Du dong Liu MOE Key Laboratory of Bioinformatics Center for Plant Biology School of Life Sciences Tsinghua University

Induction and secretion of acid phosphatases （APases） is thought to be an adaptive mechanism that helps plants survive and grow under phosphate （Pi） deprivation, in Arabidopsis, there are 29 purple acid phosphatase （AtPAP） genes. To systematically investigate the roles of different AtPAPs, we first identified knockout or knock-down T-DNA lines for all 29 AtPAP genes. Using these atpap mutants combined with in-gel and quantitative APase enzyme assays, we demonstrated that AtPAP12 and AtPAP26 are two major intracellular and secreted APases in Arabidopsis while AtPAPlo is mainly a secreted APase. On Pi-deficient （P-） medium or P- medium supplemented with the organophosphates ADP and fructose-6-phosphate （Fru-6-P）, growth of atpaplo was significantly reduced whereas growth of atpap12 was only moderately reduced, and growth of atpap26 was nearly equal to that of the wild type （WT）. Overexpression of the AtPAP12 or AtPAP26 gene, however, caused plants to grow better on P- or P- medium supplemented with ADP or Fru-6-P. Interest-ingly, Pi levels are essentially the same for the WT and overexpressing lines, although these two types of plants have significantly different growth phenotypes. These results suggest that the APases may have other roles besides enhancing internal Pi recycling or releasing Pi from external organophosphates for plant uptake.

关键词： Phosphate starvation responses acid phosphatase activity atpap mutants~ AtPAP overexpression~ tolerance to phosphatedeprivation