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染料木黄酮对骨形成的促进作用研究

营养学报 2005年第1期27卷 34-37页

作者：余增丽韩萍李文杰郑州大学公共卫生学院郑州450052

目的:用成年人成骨细胞体外培养的方法,观察染料木黄酮(genistein,GS)对骨形成的影响。方法:将生长状态良好的第三代成骨细胞用PBS洗涤后接种于无酚红高糖DMEM培养液中(含5%经活性碳-葡聚糖苷处理的胎牛血清),实验设二甲基亚砜溶剂对照... 详细信息

目的:用成年人成骨细胞体外培养的方法,观察染料木黄酮(genistein,GS)对骨形成的影响。方法:将生长状态良好的第三代成骨细胞用PBS洗涤后接种于无酚红高糖DMEM培养液中(含5%经活性碳-葡聚糖苷处理的胎牛血清),实验设二甲基亚砜溶剂对照、雌二醇对照(E2)、抗雌激素它莫西芬对照(TAM)及三个GS剂量组,观察指标包括细胞增殖,碱性磷酸酶活性及细胞骨钙蛋白合成量。结果:与溶剂对照组相比,10-8mol/L E2、10-7mol/L GS和10-6mol/L GS对人成骨细胞处理48h,能够明显促进成骨细胞的增殖作用,使细胞骨钙蛋白合成量显著增加,细胞内碱性磷酸酶活性明显提高;同时,GS可保护因雌激素耗尽所造成的成骨细胞内Ⅰ型胶原蛋白降低。10-7mol/L TAM可拮抗GS对成骨细胞所产生的这些生物学效应。结论:GS具有雌激素效应,可模拟E2而刺激骨形成并保护成骨细胞因雌激素缺乏所造成的细胞内Ⅰ型胶原蛋白降低。由于这一效应可被TAM拮抗,此结果提示,GS的促进骨形成作用是通过与雌激素受体结合产生的。

关键词： GS 骨形成成骨细胞染料木黄酮雌激素对照 Ⅰ型胶原蛋白生长状态红高碱性磷酸酶活性

Fast prediction for multi-parameters(concentration,temperature and humidity)of indoor environment towards the online control of HVAC system

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Building Simulation 2021年第3期14卷 649-665页

作者： Hao-Cheng Zhu Chen Ren Shi-jie Cao School of Architecture Southeast University2 SipailouNanjing27009China Global Centre for Clean Air Research(GCARE) Department of Civil and Environmental EngineeringFaculty of Engineering and Physical SciencesUniversity of SurreyGuildfordSurreyUK Academy of Building Energy Efficiency School of Civil EngineeringGuangzhou UniversityGuangzhou 570006China

Heating,ventilation and air conditioning(HVAC)systems are the most energy-consuming building implements for the improvement of indoor environmental quality(IEQ).We have developed the optimal control strategies for HVAC system to respectively achieve the optimal selections of ventilation rate and supplied air temperature with consideration of energy conservation,through the fast prediction methods by using low-dimensional linear ventilation model(LLVM)based artificial neural network(ANN)and low-dimensional linear temperature model(LLTM)based contribution ratio of indoor climate(CRI_((T))).To be continued for integrated control of multi-parameters,we further developed the fast prediction model for indoor humidity by using low-dimensional linear humidity model(LLHM)and contribution ratio of indoor humidity(CRI_((H))),and thermal sensation index(TS)for *** was used to construct the prediction database for CO_(2),temperature and ***-dimensional linear models(LLM),including LLVM,LLTM and LLHM,were adopted to expand database for the sake of data storage ***,coupling with ANN,CRI_((T)) and CRI_((H)), the distributions of indoor CO_(2) concentration,temperature,and humidity were rapidly predicted on the basis of LLVM-based ANN,LLTM-based CRIm and LLHM-based CRM ***,according to the self-defined indices(i.e.,E_(V),E_(T),E_(H)),the optimal balancing between IEQ(indicated by CO_(2) concentration,PMV and TS)and energy consumption(indicated by ventilation rate,supplied air temperature and humidity)were synthetically *** total HVAC energy consumption could be reduced by 35%on the strength of current control *** work can further contribute to development of the intelligent online control for HVAC systems.

关键词： HVAC system indoor air pollution thermal comfort indoor humidity control

城市化路径的实践与反思:从就地城镇化到激进城市化

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西北农林科技大学学报（社会科学版） 2015年第4期15卷 129-134页

作者：曾红萍中国农业大学人文与发展学院北京100193

苏南地区正在经历城市化路径转变,即从相对保守的就地城镇走向激进的城市化。通过对苏南A镇城市化路径分析,揭示了两种城市化路径不同的实践逻辑。研究发现,就地城镇化是村社主导的、以村庄规划为手段、以适应工业化和改善生活条件为目... 详细信息

苏南地区正在经历城市化路径转变,即从相对保守的就地城镇走向激进的城市化。通过对苏南A镇城市化路径分析,揭示了两种城市化路径不同的实践逻辑。研究发现,就地城镇化是村社主导的、以村庄规划为手段、以适应工业化和改善生活条件为目标的渐进的城市化;激进城市化则是地方政府主导、以"撤村并居"为手段、以土地指标和城市化率为目标的激进的城市化。政府推动的激进城市化打破了城乡二元结构制度,实现了城乡一体化。但因其与地方经济社会结构不相匹配,从而面临资金、政治社会稳定、社区文化再造的困境。

关键词：就地城镇化激进城市化城乡一体化 “撤村并居”

Ultrasonic assisted dyeing:Dyeing of wool fabrics as Dioscorea Cirrhosa Lour. a natural dye

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科技信息 2013年第7期 276-277页

作者： ZHANG Gang-qiang ZHU ping LIU jie LV ping-ping DONG Zhao-hong ZHANG Lin Qingdao University Qingdao Shandong266071 China Wuhan Textile University Wuhan Hubei430073China

The use of Dioscorea cirrhosa *** the dyeing of leather and silk have been some 2000 years in China as the natural *** ultrasound has been explored in the textile *** article aimed at researching the ultrasonic efficiency for dyeing wool fabric with Dioscorea cirrhosa *** in comparison with conventional *** get a significant improvement in the color strength values(K/S) at the same *** fastness and extent properties of the fabrics treated by ultrasonic were better than those obtained when treated by conventional heating.

关键词：英语学习学习方法阅读知识阅读材料

A Hand Gesture Based Interactive Presentation System Utilizing Heterogeneous Cameras

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Tsinghua Science and Technology 2012年第3期17卷 329-336页

作者： Bobo zeng Guijin Wang Xinggang Lin Department of Electronic Engineering Tsinghua UniversityBeijing 100084China

In this paper, a real-time system that utilizes hand gestures to interactively control the presentation is proposed. The system employs a thermal camera for robust human body segmentation to handle the complex background and varying illumination posed by the projector. A fast and robust hand localization al- gorithm is proposed, with which the head, torso, and arm are sequentially localized. Hand trajectories are segmented and recognized as gestures for interactions. A dual-step calibration algorithm is utilized to map the interaction regions between the thermal camera and the projected contents by integrating a Web cam- era. Experiments show that the system has a high recognition rate for hand gestures, and corresponding interactions can be performed correctly.

关键词： hand gesture detection gesture recognition thermal camera interactive presentation

New Strategy for Boosting Cathodic Performance of Protonic Ceramic Fuel Cells Through Incorporating a Superior Hydronation Second Phase

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Energy & Environmental Materials 2024年第4期7卷 83-92页

作者： Chuan Zhou Xixi Wang Dongliang Liu Meijuan Fei jie Dai Daqin Guan Zhiwei Hu Linjuan Zhang Yu Wang Wei Wang Ryan O'Hayre San ping Jiang Wei Zhou Meilin Liu Zongping Shao State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing 210009China Max Planck Institute for Chemical Physics of Solids NEothnitzer Strasse 40Dresden 01187Germany Key Laboratory of Interfacial Physics and Technology Shanghai Institute of Applied PhysicsChinese Academy of SciencesShanghai 201800China Department of Metallurgical and Materials Engineering Colorado School of MinesGolden COUSA WA School of Mines:Minerals Energy and Chemical Engineering(WASMMECE)Curtin UniversityPerth WA 6102Australia Suzhou Laboratory Suzhou 215000China School of Materials Science and Engineering Georgia Institute of TechnologyAtlantaGA 30332-0245USA

For protonic ceramic fuel cells,it is key to develop material with high intrinsic activity for oxygen activation and bulk proton conductivity enabling water formation at entire electrode ***,a higher water content which benefitting for the increasing proton conductivity will not only dilute the oxygen in the gas,but also suppress the O_(2)adsorption on the electrode ***,a new electrode design concept is proposed,that may overcome this *** introducing a second phase with high-hydrating capability into a conventional cobalt-free perovskite to form a unique nanocomposite electrode,high proton conductivity/concentration can be reached at low water content in *** addition,the hydronation creates additional fast proton transport channel along the two-phase *** a result,high protonic conductivity is reached,leading to a new breakthrough in performance for proton ceramic fuel cells and electrolysis cells devices among available air electrodes.

关键词： cathode high-hydrating capability proton conductivity protonic ceramic fuel cells

Simulation study on cooperation behaviors and crowd dynamics in pedestrian evacuation

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Chinese Physics B 2020年第3期29卷 488-495页

作者： Ya-ping Ma Hui Zhang China Research Center for Emergency Management Wuhan University of TechnologyWuhan 430070China School of Safety Science and Emergency Management Wuhan University of TechnologyWuhan 430070China Institute of Public Safety Research Department of Engineering PhysicsTsinghua UniversityBeijing 100084China

Pedestrian evacuation is actually a process of behavioral evolution. Interaction behaviors between pedestrians affect not only the evolution of their cooperation strategy, but also their evacuation paths-scheduling and dynamics features. The existence of interaction behaviors and cooperation evolution is therefore critical for pedestrian evacuation. To address this issue, an extended cellular automaton(CA) evacuation model considering the effects of interaction behaviors and cooperation evolution is proposed here. The influence mechanism of the environment factor and interaction behaviors between neighbors on the decision-making of one pedestrian to path scheduling is focused. Average payoffs interacting with neighbors are used to represent the competitive ability of one pedestrian, aiming to solve the conflicts when more than one pedestrian competes for the same position based on a new method. Influences of interaction behaviors, the panic degree and the conflict cost on the evacuation dynamics and cooperation evolution of pedestrians are discussed. Simulation results of the room evacuation show that the interaction behaviors between pedestrians to a certain extent are beneficial to the evacuation efficiency and the formation of cooperation behaviors as well. The increase of conflict cost prolongs the evacuation time. Panic emotions of pedestrians are bad for cooperation behaviors of the crowd and have complex effects on evacuation time. A new self-organization effect is also presented.

关键词： pedestrian evacuation evacuation time interaction behaviors cooperation

Remediation of nutrient-rich waters using the terrestrial plant, Pandanus amaryllifolius Roxb.

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Journal of Environmental Sciences 2014年第2期26卷 404-414页

作者： ping HAN Prakash Kumar Bee-Lian Ong Singapore Delft Water Alliance National University of Singapore Department of Biological Sciences National University of Singapore

Effective control of eutrophication is generally established through the reduction of nutrient loading into waterways and water bodies. An economically viable and ecologically sustainable approach to nutrient pollution control could involve the integration of retention ponds, wetlands and greenways into water management systems. Plants not only play an invaluable role in the assimilation and removal of nutrients, but they also support fauna richness and can be aesthetically pleasing. Pandanus amaryllifolius, a tropical terrestrial plant, was found to establish well in hydrophytic conditions and was highly effective in remediating high nutrient levels in an aquatic environment showing 100% removal of NO^-N up to 200 mg/L in 14 days. Phosphate uptake by the plant was less efficient with 64% of the PO4-P removed at the maximum concentration of 100 mg/L at the end of 6 weeks. With its high NO^-N and PO43--P removal efficiency, P. amaryllifolius depleted the nutrient-rich media and markedly contained the natural colonization of algae. The impediment of algal growth led to improvements in the water quality with significant decreases in turbidity, pH and electrical conductivity. In addition, the plants did not show stress symptoms when grown in high nutrient levels as shown by the changes in their biomass, total soluble proteins and chlorophyll accumulation as well as photochemical efficiency. Thus, P. amaryUifolius is a potential candidate for the mitigation of nutrient pollution in phytoremediation systems in the tropics as the plant requires low maintenance, is tolerant to the natural variability of weather conditions and fluctuating hydro-periods, and exhibit good nutrient removal capabilities.

关键词： chlorophyll fluorescence nitrate and phosphate removal Pandanus amaryllifolius water quality

Calculation of Hugoniot properties for shocked nitromethane based on the improved Tsien's EOS

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Acta Mechanica Sinica 2010年第3期26卷 365-370页

作者： Bo Zhao Ji-ping Cui Jing Fan Key Laboratory of High Temperature Gas Dynamics Institute of Mechanics Chinese Academy of SciencesBeijing 100190 China

We have calculated the Hugoniot properties of shocked nitromethane based on the improved Tsien＇s equa- tion of state （EOS） that optimized by ＂exact＂ numerical molecular dynamic data at high temperatures and pressures. Comparison of the calculated results of the improved Tsien＇s EOS with the existed experimental data and the direct simu- lations show that the behavior of the improved Tsien＇s EOS is very good in many aspects. Because of its simple analytical form, the improved Tsien＇s EOS can be prospectively used to study the condensed explosive detonation coupling with chemical reaction.

关键词： Equation of state High pressures andtemperatures Shocked nitromethane Hugoniot properties