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| 1 | Optimization of variables for maximizing efficacy and efficiency in aerial spray application to cotton using unmanned aerial systems显示文摘Aerial spraying can support efficient defoliation without crop contact.With the recent introduction to unmanned aerial system(UAS)for aerial spraying in China,there is a need to determine the optimum application variables to achieve high efficacy and efficiency with low costs.The present research involved field studies across two annual cotton production seasons in North Xinjiang,China.Four factors,including volume rate(A),tank mix including spray adjuvants(B),flight altitude(C),flight speed(D)and three levels of L9(3^(4))orthogonal arrays were carried out to optimize the application parameters for three types of UASs.These included different numbers of rotors as follows:four-rotors,six-rotors and eight-rotors.Spray coverage,distribution uniformity(coefficient of variation(CV)of droplet coverage),rates of cotton defoliation and boll opening,application efficiency and cost were measured and assessed.Results showed that:(1)the rates of defoliation and boll opening by aerial cotton defoliant application could meet the requirement of cotton mechanized harvesting;(2)the optimal scenario for the three UASs was A_(3)B_(2)C_(1)D_(3),Volume rate(A3):48 L/hm^(2);Tank mix and concentration(B_(2)):(Tuotulong 225+Sujie 750+Ethephon 2250)mL/hm^(2),Flight altitude(C_(1)):1.5 m,and Flight speeds(D_(3))for unmanned helicopters with four-rotors,six-rotors and eight-rotors were 3.12 m/s,2.51 m/s and 3.76 m/s,respectively.These results can provide guidance for cotton defoliant aerial spraying in China using UAS. | Juan Liao Ying Zang Xiwen Luo Zhiyan Zhou Yubin Lan Yu Zang Xiuyan Gu Weiming Xu Andrew John Hewitt | 2019 | International Journal of Agricultural and Biological Engineering2019，12，2： | 6 |
| 2 | Polar, catalytic, and conductive CoSe2/C frameworks for performance enhanced S cathode in Li–S batteries显示文摘Lithium-sulfur battery(Li-S)is considered as one of the new-generation rechargeable batteries with high performance because of its extremely high theoretical capacity,energy density,environmental harmony and low cost.However,low electrical and ionic conductivity of sulfur,safety concerns and parasitic reaction generated by the dissolved polysulfide species in electrolyte hinder the commercialization of Li-S battery.Herein,we report a polyhedral porous structure comprising of carbon coating metal selenide nanoparticles(CoSe2/C),which could not only host sulfur for Li-S battery owing to its porous and conductive structure,but also mitigate the shuttle phenomenon by polysulfides adsorption and catalytic acceleration of redox kinetics.As a result,a performance enhanced CoSe2/C-S electrode for Li-S battery is achieved. | Bo Yuan Di Hua Xingxing Gu Yu Shen Li-Chun Xu Xiuyan Li Bing Zheng Jiansheng Wu Weina Zhang Sheng Li Fengwei Huo | 2020 | Journal of Energy Chemistry2020，29，9： | 5 |
| 3 | Self-template formation of porous yolk-shell structure Mo-doped NiCo2O4 toward enhanced lithium storage performance as anode material显示文摘Hollow ternary metal oxides have shown enormous potential in lithium-ion batteries(LIBs),which is ascribed to their complex chemical composition,abundant active defect sites,and the synergy effect be-tween metals.In this work,we synthesized Mo-doped NiCo_(2)O_(4) porous spheres with yolk-shell structure by using a simple self-templating method.Surprisingly,other than the yolk-shell structure we had ob-tained,the inner core of the yolk-shell was also porous,which could fully enhance the electrolyte infil-tration and promote the transmission of lithium ions(Li+)and electrons(e−).The diameter of the porous core in the yolk-shell sphere was about 530 nm,and the outer shell’s thickness was up to 110 nm.In addition,the unique pores in the core appeared in the diameter of about 85 nm.With this structure,the volume expansion of the anode could be well inhibited during charge/discharge.It exhibited prominent electrochemical performance with high reversible capacity(1338 mA h g^(−1) at 100 mA g^(−1)),satisfactory cycle life(1360 mA h g^(−1) after 200 cycles at 100 mA g^(−1)),and exceptional rate capability(820 mA h g^(−1) at 2000 mA g^(−1))as anode material in LIBs. | Yongqiang Ren Xiuyan Li Yinan Wang Qinghua Gong Shaonan Gu Tingting Gao Xuefeng Sun Guowei Zhou | 2022 | Journal of Materials Science & Technology2022，，7： | 3 |
| 4 | Comparison of cellular responses across multiple passage numbers in Ba/F3-BCR-ABL cells induced by silver nanoparticles显示文摘With the rapid development of nanotechnology and increasingly broad bio-application of engineered nanomaterials, their biohazards have become a serious public concern. It is believed that the chemical nature, particle size, morphology, and surface chemistry of nanomaterials are key parameters that influence their toxicity. Although cultured cells have been widely used to evaluate nanomaterial toxicity, it remains unclear whether the passage of these cells affects the evaluation results. In the present study, Ba/F3 cells transfected with the BCR-ABL gene were subcultured to study the effect of passage number on cell stability and their cellular responses upon exposure to nanomaterials. The results demonstrated that proliferation, cellular senescence, BCR-ABL gene expression, cell cycle and apoptosis were stable across multiple passages. Senescence and BCR-ABL gene expression of cells from different passage cells were unchanged when treated with silver nanoparticles (AgNPs). In addition, the cells at multiple passage numbers were all arrested in the G 2 /M phase and apoptosis was induced by the AgNPs. These nanoparticles could enter cells via endocytosis and localize in the endosomes, which were also not influenced by passage number. These data suggest that short-term passage would not affect cultured cell stability and toxicity assessment using these cells would be consistent when maintained appropriately. | GUO DaWei ZHANG XiuYan HUANG ZhiHai ZHOU XueFeng ZHU LingYing ZHAO Yun GU Ning | 2012 | Science China(Life Sciences)2012，55，10： | 2 |
| 5 | Design and anti-sway performance testing of pesticide tanks in spraying UAVs显示文摘Anti-sway performance is one of the most important factors that affect the stability of unmanned aerial vehicles(UAVs).In this study,an anti-sway performance testing method and an evaluation formula for pesticide tanks were developed,which could facilitate the design and application of pesticide tank.The detection device mainly comprises a testing stand,a mounting and testing part,and a driving and control part.In the testing method,P(maximum pressure)measured by a barometer and t(fluctuation recovery time)measured by a high-speed camera were used as evaluation indexes.With the aim to determine the optimal position of the pressure detection device and the optimal filling ratio,four representative pesticide tanks were involved in this study.The results showed that the optimal position of the pressure detection device was at the middle position on the tank wall,halfway up from the bottom,and the optimal filling ratio was 0.8.Using P and t as evaluation indexes,a comprehensive evaluation formula was developed based on these tests:S=0.7Pi+0.3ti.Anti-sway performance of pesticide tanks was evaluated by a comprehensive score.A disk pesticide tank with a baffle was determined to be the best among the four types of pesticide tanks,showing a score of 1.The scores of the other three pesticide tanks were 0.500,0.428 and 0.612,respectively.These results indicated that the baffle structure in the pesticide tank and the radian design of the tank wall can effectively improve the anti-sway performance of a pesticide tank.The proposed detection device and test method are simpler and more intuitive compared to other approaches in evaluating the anti-sway performance of pesticide tanks in spraying UAVs,and they can be used as a reference to guide the design of pesticide tanks and the stability evaluation of spraying UAVs. | Yu Zang Ying Zang Zhiyan Zhou Xiuyan Gu Rui Jiang Lingxi Kong Xingang He Xiwen Luo Yubin Lan | 2019 | International Journal of Agricultural and Biological Engineering2019，12，1： | 2 |
| 6 | Anti-leukemia activity of PVP-coated silver nanoparticles via generation of reactive oxygen species and release of silver ions显示文摘 | Dawei Guo Lingying Zhu Zhihai Huang Haixia Zhou Yue Ge Wenjuan Ma Jie Wu Xiuyan Zhang Xuefeng Zhou Yu Zhang Yun Zhao Ning Gu | 2013 | Biomaterials2013，，： | 1 |
| 7 | Hyperbaric oxygen treatment induces dynamic ATPase activity changes in the rat brain following transient global cerebral ischemia-reperfusion显示文摘BACKGROUND:Energy depletion,induced by ischemia or hypoxia,is one of the first events in neuronal injury.OBJECTIVE:To investigate the dynamic changes of Na+-K+-ATPase and Ca2+-ATPase activity in the rat brain following transient global cerebral ischemia-reperfusion(IR),as well as the effects of hyperbaric oxygen(HBO) treatment.DESIGN,TIME AND SETTING:A randomized and controlled animal study was performed in the Department of Biochemistry and Molecular Biology,Capital Medical University between February and December 2006.MATERIALS:Clean-grade,female,Sprague Dawley rats were provided by the Animal Research Department of Capital Medical University(License number:SYXK11-00-0047).Na+-K+-ATPase and Ca2+-ATPase kits were provided by Nanjing Jiancheng Bioengineering Institute(Nanjing,China).A hyperbaric oxygen chamber(DWC150-300) was supplied by Shanghai 701 Medical Oxygen Chamber Factory(Shanghai,China).METHODS:Sixty-three rats were randomly divided into nine groups:sham operated group(sham-O) as control,groups of IR,and groups treated with hyperbaric oxygen(HBO) after IR.Animal from the IR and HBO groups were sacrificed after four different survival intervals of 6,24,48 and 96 hours,respectively.Each group consisted of seven rats.The rats of HBO groups were placed into the hyperbaric chamber.The HBO chamber was flushed with pure oxygen for 5 minutes,followed by a gradual rise in pressure over 5 minutes and stabilization at 0.2 MPa.Then,pure oxygen was supplied for 45 minutes in stabilized pressure,followed by gradually reduced pressure over 15 minutes.The rats of the 6-h HBO group were placed into the HBO chamber following reperfusion for 3 hours on the first day,which was repeated on three consecutive days,always at the same time.Rats in the sham-O group and IR group remained under normal atmospheric pressure.MAIN OUTCOME MEASURES:The Na+-K+-ATPase and Ca2+-ATPase activity in rat brain homogenate was detected by the ammonium molybdate assay method.RESULTS:All 63 rats were included in the final analysis.After 6 hours,Na+-K+-ATPase activity was significantly greater in HBO animals,compared with IR animals(P < 0.05) and sham-O controls(P < 0.01).In both,the HBO group and IR group,Na+-K+-ATPase activity returned to normal levels after 24 hours(P > 0.05).At 48 and 96 hours,Na+-K+-ATPase activity was significantly greater in HBO and IR animals,compared with sham-O animals(P < 0.05).Ca2+-ATPase activity was significantly greater in the HBO group after 6 hours,compared with the sham-O group(P < 0.01),and returned to normal levels at 24 and 96 hours(P > 0.05).In the IR group,Ca2+-ATPase activity was significantly higher after 6 hours than in the sham-O group(P < 0.01),and returned to normal levels after 24 hours(P > 0.05).CONCLUSION:The Na+-K+-ATPase and Ca2+-ATPase activity in IR groups increased during the acute and the delayed phase following transient global cerebral IR.HBO treatment not only increased Na+-K+-ATPase activity at the acute stage,but also induced a faster recovery of Ca2+-ATPase activity. | Shiming Xu Hongjuan Wang Tongnan Gu Xiuyan Zhou Rui Chen | 2008 | Neural Regeneration Research2008，3，9： | 1 |
| 8 | Review of tensairity and its applications in agricultural aviation显示文摘In recent years,the unmanned aerial vehicle(UAV)has undergone rapid development in field of agricultural plant protection;however,the payload and max-endurance are bottlenecks that limit its further development.Tensairity is a new structure consisting of a bag filled with low-pressure gas,an upper rigid rod and a lower flexible cable.It puts tension pressure on the whole structure through internal gas pressure,provides continuous support to the upper rigid rod,and that is to say,the tensairity improves the stability of the structure in some way.And also,tensairity is a self-supporting and self-balancing system,which means it is a simple,lightweight structure with small storage volume,strong bearing capacity,and low engineering cost.It also has the advantages of gasbag and BSS(beam string structure).The main objective of this research was to introduce the theoretical basis of tensairity and then discussed its development and applications.Moreover,the advantages and disadvantages of tensairity were summarized,and development prospects of tensairity in agricultural aviation were presented.At last,it can be concluded that tensairity has potentials in agricultural aviation.If tensairity is applied in agricultural UAVs,it will solve the two major problems of payload and max-endurance better,and help promoting the development of agricultural aviation technology in agricultural aviation administration and application.Also,it will help with meeting the aerial application requirements of high efficiency and maximal environmental protection.This research will provide a reference for improving working efficiency and economic benefits of UAVs in agricultural plant protection. | Zang Ying Gu Xiuyan Zhou Zhiyan Luo Xiwen Zang Yu Qi Xingyuan Liu Wulan Yang Cheng | 2016 | International Journal of Agricultural and Biological Engineering2016，9，3： | 0 |
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