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纸浆漂白用木聚糖酶选择性合成的研究现状

中国造纸学报 2006年第2期21卷 82-87页

作者：毛连山余世袁南京林业大学化学工程学院江苏南京210037

对纸浆漂白用木聚糖酶选择性合成的研究现状进行了较全面的总结和评述。系统地介绍了木聚糖酶的酶源和木聚糖酶的多样性以及碳源、培养温度、pH值和碳氮比等培养条件对合成木聚糖酶和纤维素酶的影响,提出了调控这些培养条件选择性合成... 详细信息

对纸浆漂白用木聚糖酶选择性合成的研究现状进行了较全面的总结和评述。系统地介绍了木聚糖酶的酶源和木聚糖酶的多样性以及碳源、培养温度、pH值和碳氮比等培养条件对合成木聚糖酶和纤维素酶的影响,提出了调控这些培养条件选择性合成低纤维素酶活的木聚糖酶,以使木聚糖酶更好地在纸浆漂白中应用。

关键词：木聚糖酶纤维素酶选择性合成纸浆漂白

行政部门非经营性国有资产管理的理论基础分析

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财经论丛（浙江财经学院学报） 2006年第2期 48-53页

作者：庄序莹毛程连上海财经大学公共经济与管理学院上海200433

本文试图用现代经济学理论探讨我国行政部门非经营性国有资产管理问题,并找到有效解决问题的方法,认为,行政部门应结合各级政府机关主管部门已有的经验数据,提供质量和配置标准统一的非经营性国有资产,必要时引入数量分析模型。此外,建... 详细信息

本文试图用现代经济学理论探讨我国行政部门非经营性国有资产管理问题,并找到有效解决问题的方法,认为,行政部门应结合各级政府机关主管部门已有的经验数据,提供质量和配置标准统一的非经营性国有资产,必要时引入数量分析模型。此外,建立基于公共利益而非商业利益为基础的恰当的绩效指标体系是搞好管理的重要一环。

关键词：行政部门非经营性资产管理

GB7 acetate,a novel galbulimima alkaloid from Galbulimimabelgraveana,inhibits migration and invasion in colorectal cancer cells

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GB7 acetate,a novel galbulimima alkaloid from Galbulimimabel...

中国毒理学会第九次全国毒理学大会

作者： LI Zi-yin mao lian-zhi YANG Xing-fen SUN Su-xia Department of Nutrition and Food Hygiene Guangdong Provincial Key Laboratory of Tropical Disease Research School of Public HealthSouthern Medical University Food safety and health research center School of Public Health Southern Medical University

GB7 acetate is a natural compound first studied in G. belgraveana, but its activities remain unclear. This research aimed to identify the structure of GB7 acetate, evaluate its effect on colorectal cancer cells, and further demonstrate the underlying associated mechanisms. MTT and colony formation assays revealed GB7 acetate inhibited the proliferation and colony formation of colorectal cancer cells. Wound-healing and transwell assays showed that GB7 acetate inhibited the metastasis capabilities of colorectal cancer cells. Additionally, the production of MMP 2/MMP 9 significantly decreased,whereas the expression of E-cad increased in the presence of GB7 acetate. Furthermore, GB7 acetate considerably reduced the mitochondrial OXPHOS and glycolysis. In summary, GB7 acetate exerted antiproliferative effect on colorectal cancer cells and reduced their cell invasion and migration capacities by downregulating the production of MMP 2 and MMP 9, upregulating the expression E-cad, and inhibiting the cellular energy metabolism. The suppression of cancer cells metastasis by GB7 acetate might provide a new insight into cancer treatment efficacy or cancer chemoprevention.

关键词： Colorectal cancer GB7 acetate Metastasis Energy metabolism MMP E-cad

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发放消费券对扩大内需的影响效应分析

财经理论与实践 2010年第1期31卷 74-77页

作者：薛菁毛程连上海财经大学公共经济与管理学院上海200433

从消费者的角度研究消费券对扩大内需的影响效应,通过问卷调查方式获取消费者对消费券看法的基础数据,运用因子分析、方差分析、logistic回归等方法对消费券的使用效应进行分析。结论显示:发放消费券对扩大内需作用有限,从长期看,增加... 详细信息

从消费者的角度研究消费券对扩大内需的影响效应,通过问卷调查方式获取消费者对消费券看法的基础数据,运用因子分析、方差分析、logistic回归等方法对消费券的使用效应进行分析。结论显示:发放消费券对扩大内需作用有限,从长期看,增加就业和完善社会保障制度仍是拉动内需的关键,政府投资是短期内扩大内需的有效措施。

关键词：消费券内需影响效应

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四指马鲅人工繁殖技术

水产科技情报 2009年第6期36卷 275-278页

作者：毛连环闽东水产研究所福建宁德352100

介绍了四指马鲅人工繁殖的技术流程,包括产卵、受精卵孵化、饵料培养及仔鱼的后期培养管理,重点阐述了饵料的营养对四指马鲅鱼苗存活率和存活质量的影响,以期为我国四指马鲅人工繁殖的发展提供理论依据。

关键词：四指马鲅人工繁殖饵料培养环境因子

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广西中平河流域水文特性

桂林工学院学报 2005年第4期25卷 442-445页

作者：田茂连广西水文水资源柳州分局

中平河流域为一个小流域,地处暴雨高值区,站点最大的年降水量达2 742.1 mm.降水空间分布不均匀,上游地区为山区,降水量大,其余地区降水量较小.流域周围地区的地势比较开阔,水蒸汽易于散发,蒸发量比较大,最大的年蒸发量达1 022.4 mm;多... 详细信息

中平河流域为一个小流域,地处暴雨高值区,站点最大的年降水量达2 742.1 mm.降水空间分布不均匀,上游地区为山区,降水量大,其余地区降水量较小.流域周围地区的地势比较开阔,水蒸汽易于散发,蒸发量比较大,最大的年蒸发量达1 022.4 mm;多年平均最大蒸发量为7月份,达167.4 mm.洪水涨落迅速,小流域的洪水特性非常明显.多年平均最大径流量发生在6月份,达1.06亿m3,多年平均最小径流量是1月份,仅为0.143亿m3.

关键词：中平河流域水文特性降水量蒸量径流广西

Comparative studies on Fenton-like reactions catalyzed by Fe_(3)O_(4) loaded inside and outside halloysite nanotubes for the removal of organic pollutants

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Frontiers of Materials Science 2024年第1期18卷 15-28页

作者： Yang Li Jia-Qi Zhou Huan-Yan Xu Li-Min Dong mao-Chang Cao lian-Wei Shan Li-Guo Jin Xiu-Lan He Shu-Yan Qi Heilongjiang Provincial Key Laboratory of CO_(2) Resource Utilization and Energy Catalytic Materials School of Materials Science and Chemical EngineeringHarbin University of Science and TechnologyHarbin 150040China

In this work,Fe_(3)O_(4) nanoparticles(NPs)loaded inside and outside halloysite nanotubes(HNTs)were prepared and developed as the heterogeneous Fenton-like catalysts for the removal of representative organic *** results indicated that the samples with Fe_(3)O_(4) NPs loaded outside the HNTs lumen(Fe_(3)O_(4)/HNTs)and inside the HNTs lumen(Fe_(3)O_(4)@HNTs)were successfully *** samples had typical magnetic hysteresis loops,while Fe_(3)O_(4)@HNTs exhibited higher magnetization *** comparative experiments showed that Fe_(3)O_(4)@HNTs had better Fenton-like catalytic ability than that of Fe_(3)O_(4)/HNTs in the degradation of various organic *** Rhodamine B(RhB)as an example,the adsorption thermodynamics and kinetics of RhB onto Fe_(3)O_(4)/HNTs and Fe_(3)O_(4)@HNTs were also *** comparative results demonstrated that the adsorption ability of Fe_(3)O_(4)/HNTs was better than that of Fe_(3)O_(4)@***,the dissolved concentration of Fe^(2+)and production amount of hydroxyl radical(·OH)in the Fe_(3)O_(4)@HNTs-H_(2)O_(2) system were significantly higher than those in the Fe_(3)O_(4)/HNTs-H_(2)O_(2) *** on aforementioned comparison,the nano-confinement effect in the Fe_(3)O_(4)@HNTs-H_(2)O_(2) system was *** work provides meaningful guidance for the cheap and convenient design of nanoreactors for Fenton-like applications.

关键词： Fe_(3)O_(4) halloysite nanotube adsorption Fenton-like reaction mechanism

Research on Strategies to Promote the Integration of Industrial Chain,Innovation Chain,and Supply Chain in the Beijing-Tianjin-Hebei Region

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Proceedings of Business and Economic Studies 2024年第4期7卷 166-171页

作者： Chengguo E Ahui mao Xiuyan Huang lian lian Kun Yi Hebei University of Environmental Engineering Qinhuangdao 066102China Qinhuangdao Transportation Comprehensive Administrative Law Enforcement Detachment Qinhuangdao 066000China Qinhuangdao Rural Highway Development Center Qinhuangdao 066000China

With the rapid development of international economic integration,industrial competition has gradually evolved from a competition of enterprise capabilities and resources to a game of comprehensive system collaboration capabilities among all participating *** is,the competition in the current international economy has evolved into an interactive and collaborative competition among the“three chains”of industry chain,capital chain,and innovation *** on analyzing the current situation of the integration of the industrial chain,innovation chain,and supply chain,this article deeply analyzes the geographical advantages of the three chains in the Beijing-Tianjin-Hebei *** the perspective of scientific and technological innovation and talent cooperation synergy,it proposes the integration strategy of the three chains in the Beijing-Tianjin-Hebei region.

关键词： Industrial chain Innovation chain Supply chain Beijing-Tianjin-Hebei Spatial distribution

Recent progress of photodetector based on carbon nanotube film and application in optoelectronic integration

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Nano Research Energy 2023年第2期2卷 182-199页

作者： Xiang Cai Sheng Wang lian-mao Peng Key Laboratory for the Physics and Chemistry of Nanodevices and Center for Carbon-Based Electronics School of ElectronicsPeking UniversityBeijing 100871China State Key Laboratory of Advanced Optical Communication System and Networks School of ElectronicsPeking UniversityBeijing 100871China

Due to its remarkable electrical and optical capabilities,optoelectronic devices based on the semiconducting single-walled carbon nanotube(s-SWCNT)have been studied extensively in the last two ***,s-SWCNT is a direct bandgap semiconductor with a high infrared absorption coefficient and high electron/hole *** addition,as a typical one-dimensional material,there is no lattice mismatch between s-SWCNT and any *** advantage is that the optoelectronic devices of s-SWCNT can be processed at low temperatures.s-SWCNT has intriguing potential and applications in solar cells,light-emitting diodes(LEDs),photodetectors,and three-dimensional(3D)optoelectronic *** recent years,along with the advancement of solution purification technology,the high-purity s-SWCNTs film has laid the foundation for constructing large-area,homogenous,and high-performance optoelectronic *** this review,optoelectronic devices based on s-SWCNTs film and related topics are reviewed,including the preparation of high purity s-SWCNTs film,the progress of photodetectors based on the s-SWCNTs film,and challenges of s-SWCNTs film photodetectors.

关键词： carbon nanotube high purity semiconducting single-walled carbon nanotubes(s-SWCNTs)film photodetectors optoelectronic integration