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多旋翼无人机串联混合动力系统能量管理仿真

航空动力学报 2024年第6期39卷 216-227页

作者：徐楷王步宇帅石金清华大学航空发动机研究院北京100084

以最大输出功率为14.9 kW、功质比为2.8的活塞发动机作为主动力源搭建了多旋翼无人机准静态飞行串联混合动力系统功率模型,针对最大起飞质量80 kg级的多旋翼无人机进行了飞行性能模拟计算,重点比较不同能量管理策略的节油效果,并进一步... 详细信息

以最大输出功率为14.9 kW、功质比为2.8的活塞发动机作为主动力源搭建了多旋翼无人机准静态飞行串联混合动力系统功率模型,针对最大起飞质量80 kg级的多旋翼无人机进行了飞行性能模拟计算,重点比较不同能量管理策略的节油效果,并进一步探索多旋翼无人机起飞电池容量和燃油量对经济性和续航能力的影响。结果表明:在荷电状态保持约束下,减少电池上的能量损耗能够降低混动无人机油耗,且最小等效能量消耗策略表现较好;短航时条件下一定比例的电池容量有利于节油,但长航时条件下所用电池能量比例越大,油耗越大,系统经济性越差;载质量越大,任务时间越短,则系统的燃油经济性越好。

关键词：串联混动多旋翼无人机最小等效能量消耗策略能量管理动态规划

Pathogenicity of Escherichia coli O_(123) from Rex Rabbit on White Mice

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Animal Husbandry and Feed Science 2014年第4期6卷 216-217页

作者： Wang Yanping Guo shijin Yang Limei Dong Lin xu Qianqian Shen Zhiqiang Shandong Binzhou Animal Science and Veterinary Medicine Academy Shandong Lvduante Veterinary Drug Industry Co. Ltd.

[Objective]The paper was to analyze the pathogenesis of Escherichia coli O123 from rex rabbit. [Method]E. coli O123 isolated from rabbit liver with diarrhea symptom in scale rex rabbit farm was intraperitoneally injected into 18- 22 g Kunming mice,and its pathogenicity was determined by clinical symptoms and pathological examination. [Result]When the inoculation concentration was about 8. 5 × 107 CFU /mL,Kunming mice appeared the clinical symptoms of drooping spirit,diarrhea and gathering,and the mortality reached 50%. Anatomical examination found that intestinal wall was thinning and intestinal mucosa was bleeding. [Conclusion]E. coli from rex rabbit has strong pathogenicity,and establishing animal model with Kunming mice to study its pathogenesis is of great reference significance for diagnosis and prevention of E. coli disease of rex rabbit.

关键词： Scale rex rabbit farm E.coli from rex rabbit Pathogenicity

Determination of Berberine Hydrochloride Content in Qingwen Baidu Granule by HPLC

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Animal Husbandry and Feed Science 2014年第1期6卷 27-30页

作者： Guo shijin Wang Yanping Fu Shijun Zhang Zhimei xu Qianqian Shen Zhiqiang Shandong Binzhou Animal Science and Veterinary Medicine Academy Shandong Lvdu Ante Veterinary Drug Co. Ltd.

The paper was to establish a simple and sensitive HPLC method for determination of berbefine hydrochloride content in Qingwen Baidu granule. The HPLC system consisted of Stable Bond - C18 column （4.6 × 150 mm, 5um） and with a mobile phase of acetonitrile -0.05mol/L potassium dihydrogen phosphate solution （50：50,v：v） mixture. Berberine hydrochloride was detected at the wavelength of 345 nm, with a flow rate of 1.0 ml/min and a column temperature of 30 ℃. The excipients and solvents in the granule could be well separated from the drug under such a designated chromatogram condition and did not interfere with the assay. A good linear relationship was found between peak area and the concentration of berberine hydrochloride in the range of 16.0 -48.0 I^g/mL. The average recovery of berberine hydrochloride was 99.09%. The established approach was specific, accurate, reliable, prompt, sensitive and applicable, and could be used to control the quality of Qingwen Baidu granule.

关键词： Berberine hydrochloride HPLC Qingwen baidu granule

加热、冷却下变物性梯度功能材料板瞬态热应力

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机械强度 2005年第4期27卷 510-517页

作者：许杨健涂代惠马士进河北工程学院土木工程学院邯郸056038 河北工程学院理学院邯郸056038

用非线性有限元法分析由ZrO2和Ti6Al4V组成的变物性梯度功能材料板在加热、冷却过程中的瞬态热应力问题,检验方法的正确性,给出不同力学边界条件下该材料板的瞬态热应力场分布,并与常物性时的结果进行比较。结果表明,考虑变物性比常物... 详细信息

用非线性有限元法分析由ZrO2和Ti6Al4V组成的变物性梯度功能材料板在加热、冷却过程中的瞬态热应力问题,检验方法的正确性,给出不同力学边界条件下该材料板的瞬态热应力场分布,并与常物性时的结果进行比较。结果表明,考虑变物性比常物性时的最大拉应力减少26%,最大压应力减少23.2%;在冷却初瞬时,陶瓷侧出现很大拉应力;此外,材料组分的分布形状系数M的变化和力学边界条件对该材料板的加热、冷却瞬态热应力场分布的影响显著。此结果为该材料的设计、制备提供了准确的理论计算依据。

关键词：梯度功能材料板变物性瞬态热应力加热冷却力学边界非线性有限元法

Identification of Coptis chinensis and Forsythia sus-pensa from Qingwen Baidu Granules by TLC

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Animal Husbandry and Feed Science 2016年第1期8卷 24-26页

作者： Guo shijin Fu Shijun Wang Yanping Zhang Zhimei xu Qianqian Shen Zhiqiang Shandong Binzhou Animal Science and Veterinary Medicine Academy Binzhou 256600China Shandong Lvdu Ante Veterinary Drug Co. Ltd.Binzhou 256600China

[ Objective] The paper was to establish the identification method of Coptis chinensis and Forsythia suspensa in Qingwen baidu granules. [ Method ] With benzene-ethyl acetate-methanol-isopropanol-cancentrated ammonium liquid （ 12：6：3：3：1 ） as the developer, the samples were outspread in the cylinder with sat- urated ammonia steam by thin layer chromatography （TLC）, and the existence of C. chinensis and berberine hydrochloride was checked under UV lamp. With tri- chloromethane-methanol （5：1） as the developer and 10% sulfuric acid ethanol solution as the chromogenic reagent, the samples were heated at 105 ℃ for 5 min to check the existence of F. suspense under natural light. [Result] Qingwen baidu granules had the same spots with C. chinensis control and berberine hydrochloride at the same Rf value under 365 nm UV lamp; Qingweu baidu granules had the same spots with F. suspensa control at the same Rfvalue under natural light. [ Condusion] A TLC method detecting C. chinensis and F. suspensa in Qingwen baidu granules was established, which had good specificity and repeatability, suitable for rapid detection of C. chinensis and F. suspensa. It could be well applied to control the quality of Qingwen baidu granule.

关键词： Qingwen baidu granule C. chinensis F. suspensa TLC identification

Determination of Pulchinenoside B4 in Compound Radix Pulsatillae Granule

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Animal Husbandry and Feed Science 2016年第5期8卷 266-268,280页

作者： Zhang Ying Yang Limei xu Qianqian Wang Yanping Guo shijin Shen Zhiqiang Shandong Binzhou Animal Science and Veterinary Medicine Academy Binzhnu 256600 China Shandong Lvdu Ante Veterinary Drug Co. Ltd. Binzhou 256600 China

The determination method of pulchinenoside B4 in compound Radix Pulsatillae granule was established in the paper. The results laid a foundation for quality control of compound Radix Pulsatillae granule.

关键词： Pulchinenoside B4 Compound Radix Pulsatillae Granule Quality control

美、英两国土壤污染防治立法及其对我国的借鉴

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农业考古 2007年第6期 81-85页

作者：王世进许珍江西理工大学环境资源法研究中心江西理工大学

土壤污染已成为世界环境问题。随着我国经济社会的快速发展,土壤污染问题也日趋严重。美国和英国在土壤污染防治立法方面有许多值得肯定之处,我国应借鉴美英国家立法经验,对我国土壤污染防治立法进行完善。

关键词：美国英国土壤污染防治立法借鉴

Advances in emission control of diesel vehicles in China

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Journal of Environmental Sciences 2023年第1期123卷 15-29页

作者： Guangyan xu Wenpo Shan Yunbo Yu Yulong Shan Xiaodong Wu Ye Wu Shaojun Zhang Liqiang He shijin Shuai Hailong Pang xuefeng Jiang Heng Zhang Lei Guo Shufen Wang Feng-Shou Xiao Xiangju Meng Feng Wu Dongwei Yao Yan Ding Hang Yin Hong He Research Center for Eco-Environmental Sciences Chinese Academy of SciencesBeijing 100085China Institute of Urban Environment Chinese Academy of SciencesXiamen 361021China Tsinghua University Beijing 100084China Army Military Transportation University Tianjin 300161China Dongfeng Motor Corporation Wuhan 430101China China National Heavy Duty Truck Group Company Limited Jinan 250000China Zhejiang University Hangzhou 310027China Chinese Research Academy of Environmental Sciences Beijing 100012China

Diesel vehicles have caused serious environmental problems in ***,the Chinese government has launched serious actions against air pollution and imposed more stringent regulations on diesel vehicle emissions in the latest China VI *** fulfill this stringent legislation,two major technical routes,including the exhaust gas recirculation(EGR)and high-efficiency selective catalytic reduction(SCR)routes,have been developed for diesel ***,complicated aftertreatment technologies have also been developed,including use of a diesel oxidation catalyst(DOC)for controlling carbon monoxide(CO)and hydrocarbon(HC)emissions,diesel particulate filter(DPF)for particle mass(PM)emission control,SCR for the control of NOx emission,and an ammonia slip catalyst(ASC)for the control of unreacted *** to the stringent requirements of the China VI standard,the aftertreatment system needs to be more deeply integrated with the engine *** the future,aftertreatment technologies will need further upgrades to fulfill the requirements of the near-zero emission target for diesel vehicles.

关键词： Diesel vehicles Legislation Emission control Aftertreatment system Nitrogen oxides Particulate matter

Effect of Shuanghuanglian Propolis Oral Liquid on Immune Function of Broilers

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Animal Husbandry and Feed Science 2016年第1期8卷 29-30页

作者： Yang Limei Ma Li Guo shijin xu Qianqian Shen Zhiqiang Wang Yanping Zhang Ying Shandong Binzhou Animal Science and Veterinary Medicine Academy Binzhou 256600China Shandong Lvdu Ante Veterinary Drug Co. Ltd.Binzhou 256600China

The effects on immune function of broilers was studied by adding different doses of Shuanghuanglian propolis oral liquid in drinking water, to provide a theoretical basis for application and promotion of Shuanghuanglian propolis oral liquid. Ninety one-day-old broilers were randomly divided into three groups ： group I was designed as control; groups Ⅱ and Ⅲ were added with 0.5 and 1.0 mL/L Shuanghuanglian propolis oral liquid in drinking water, respectively. Compared with group I, all tested indicators in groups Ⅱ and Ⅲ were increased at varying degrees as follows ： bursa of fabricius index increased by 5.74% （P 〈 0.05 ） and 7.66% （P 〈 0.05 ） ; thymus index increased by 1.47% （P 〉 0.05 ） and 2.06% （P 〈 0.05 ） ; spleen index increased by 5.88% （P 〉 0.05 ） and 7.84% （ P 〈 0.05 ） ; Newcastle disease virus （NDV） antibody titer increased by 11.99% （P 〈 0.05 ） and 16.94% （P 〈 0.05 ） ; IL-2 content increased by 2.71% （P 〉 0.05） and 4.52% （P 〈 0.05 ） ; IL -6 content increased by 4.04% （P 〉 0.05 ） and 7.26% （ P 〈 0.05 ）, respectively. The results showed that adding 0.5 and 1.0 mL/L Shuanghuangllan propolis oral liquid in drinking water could improve the immune function of broiler and immune effect of ND vaccine.

关键词： Shuanghuanglian propolis oral liquid Immune organ index Antibody titer Cytokines Immune function