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Detoxification of insecticides, allechemicals and heavy metals by glutathione S-transferase SIGSTE1 in the gut of Spodoptera litura

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Insect Science 2015年第4期22卷 503-511页

作者： zhi-bin xu Xiao-Peng Zou Ni Zhang Qi-Li Feng Si-Chun Zheng Laboratory of Molecular and Developmental Entomology Guangdong Provincial Key Laboratory of Biotechnology for Plant Development School of Life Sciences South China Normal University Guangzhou 510631 China

Insect glutathione S-transferases （GSTs） play important roles in detoxifying toxic compounds and eliminating oxidative stress caused by these compounds. In this study, detoxification activity of the epsilon GST S1GSTE1 in Spodoptera litura was analyzed for several insecticides and heavy metals. S1GSTE1 was significantly up-regulated by chlor- pyrifos and xanthotoxin in the midgut of S. litura. The recombinant S1GSTE1 had Vmax （reaction rate of the enzyme saturated with the substrate） and Km （michaelis constant and equals to the substrate concentration at half of the maximum reaction rate of the enzyme） values of 27.95 ± 0.88μmol/min/mg and 0.87 ± 0.028 mmol/L for glutathione, respec- tively, and Vmax and Km values of 22.96 ± 0,78μmol/min/mg and 0.83 ± 0.106 mmol/L for 1-chloro-2,4-dinitrobenzene, respectively. In vitro enzyme indirect activity assay showed that the recombinant S1GSTE 1 possessed high binding activities to the insecticides chlor- pyrifos, deltamethrin, malathion, phoxim and dichloro-diphenyl-trichloroethane （DDT）. S1GSTE1 showed higher binding activity to toxic heavy metals cadmium, chromium and lead than copper and zinc that are required for insect normal growth. Western blot analysis showed that S1GSTE1 was induced in the gut of larvae fed with chlorpyrifos or cadmium. S1GSTE1 also showed high peroxidase activity. All the results together indicate that S1G- STE1 may play an important role in the gut orS. litura to protect the insect from the toxic effects of these compounds and heavy metals.

关键词： glutathioneS-transferase heavy metal insecticide midgut Spodoptera litura

Amination of electron deficient aryl chlorides promoted by nano sized Mg(OH)_2 under transition metals free condition

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Chinese Chemical Letters 2012年第2期23卷 137-140页

作者： zhi Hao Cui Zi Hui Meng Yan Qing Mi Peng Wang Qi Wang Lin Man Zhao Ke Jian Cui Fang Yu zhi bin xu Department of Applied Chemistry and Pharmaceuticals Beijing Institute of TechnologyBeijing 100081China

This paper presents the amination reactions of electron deficient aryl chlorides promoted by Mg（OH）_2 without transition metals. Only using stoichiometric amount of nano sized Mg（OH）_2,good to moderate isolated yi... 详细信息

关键词： Anination Electron deficient aryl chloride Cyclic secondary amines Nano sized Magnesium hydroxide

Unsteady-State Grinding Technology (II) Experimental Studies of Grinding Forces and Force Ratio

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厦门大学学报（自然科学版） 2002年第S1期41卷 53-54页

作者： LI zhi-chao, LIN bin, xu Yan-shen, HU Jun (The State Education Ministry Key Laboratory of High Temperature Structure Ceramics and Machining Technology of Engineering Ceramics, Tianjin University, Tianjin 300072, China)

As is known to all, grinding force is one of the most important parameters to evaluate the whole process of grinding. Generally, the grinding force is resolved to three component forces, namely, normal grinding force F n, tangential grinding force F t and a component force acting along the direction of longitudinal feed which is usually neglected because of insignificance. The normal grinding force F n has influence upon surface deformation and roughness of workpiece, while the tangential grinding force F t mainly affect power consumption and service life of grinding wheel. In order to study deep into the process of the unsteady state grinding, we set up a measurement system to monitor the change of grinding force during the course of grinding and try to find some difference in the change of grinding force between the steady state grinding and unsteady state grinding. In the test, the normal and tangential grinding forces, F n and F t were measured by using a set of equipments including sensor, amplifier, oscilloscope and computer monitor. From the results, we can conclude that: 1) In the unsteady state grinding process, the values of the grinding forces are much lower than those of the steady state grinding process and the grinding force ratio showed a nonlinear fluctuation. 2) The tendency of the grinding forces in the process of the unsteady state grinding proved the existence of the cutting and micro-cutting actions. 3) Because the grinding force signals of the unsteady state grinding are much weaker than those of the steady state grinding, to obtain accurate value of the grinding forces, wave filtering is needed to be done. The whole process to filter the perturbation wave can be separated into three steps in order, changing the grinding force signals from analog signals into digital signals, FFT (fast Fourier transform) treatment to the digital signals, and IFFT(inversion fast Fourier transform) treatment to the digital signals after spectrum limitation.

关键词： unsteady state grinding theory grinding force grinding force ratio ceramics common abrasive wheel

A mechanical reinforced and antifreezing polyacrylate hydrogel electrolyte for high-performance zinc-ion batteries

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Nano Research 2025年第1期18卷 341-350页

作者： Zili Zhang Ruolin Wang Hongfei Lu Di Zhang Yu Zhao Jing xu bin Sun zhi-Min Dang Yang Jin School of Electrical and Information Engineering Zheng Zhou UniversityZhengzhou 450001China State Key Lab of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China

The operation of aqueous zinc-ion batteries in flexible energy storage field is plagued by the uncontrollable growth of Zn-dendrite and inevitable freeze of water below 0 ℃.Therefore,it is necessary to design a hydrogel electrolyte with good mechanical property and freezing resistance to uniform the Zn-deposition and resist flexibility loss at low *** find that the mechanical property(strength and toughness)of hydrogel electrolyte has a significant impact on the suppression of dendrite growth and the uniform deposition of zinc ***,a polyacrylate hydrogel is prepared in one step by ultraviolet(UV)curing method with Zn(CF_(3)SO_(3))_(2)salt and polyvinyl alcohol(PVA)addition to increase the antifreezing ability and mechanical *** adsorption of water molecules by 2-hydroxyethyl acrylate(HEA)and PVA reduces the freezing point of the hydrogel,which is beneficial for enhancing the electrochemical stability at low *** this basis,the Zn-symmetrical battery with hydrogel electrolyte has a long lifespan of 4710 h at 0.5 mA·cm^(-2)and 0.5 mAh·cm^(-2)at room ***,the hydrogel electrolyte exhibits an outstanding stability at low temperature of^(-2)0 ℃,the lifespan of symmetrical battery reaches to 4000 h at 0.5 mA·cm^(-2)and 0.5 mAh·cm^(-2).The assembled full cell with NaV3O8·1.5H_(2)O(NVO)cathode and hydrogel electrolyte possesses a high capacity retention ratio of 77%after 10,000 cycles at^(-2)0 ℃.The flexible cell can power light-emitting diode(LED)lamp under bending,warping and cutting without liquid leakage and an electronic watch at the operating temperature of^(-2)0 ℃.

关键词： zinc ion battery hydrogel electrolyte mechanical enhancement freezing resistance

Overview of in-situ oxygen production technologies for lunar resources

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 233-255页

作者： Youpeng xu Sheng Pang Liangwei Cong Guoyu Qian Dong Wang Laishi Li Yusheng Wu zhi Wang College of Materials Science and Engineering Shenyang University of TechnologyShenyang 110870China CAS Key Laboratory of Green Process and Engineering National Engineering Research Center for Green Recycling of Strategic Metal ResourcesInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China Innovation Academy for Green Manufacture Chinese Academy of SciencesBeijing 100190China School of Chemical Engineering University of Chinese Academy of SciencesBeijing 100049China

The rich resources and unique environment of the Moon make it an ideal location for human expansion and the utilization of extraterrestrial ***,crucial for supporting human life on the Moon,can be extracted from lunar regolith,which is highly rich in oxygen and contains polymetallic *** oxygen and metal extraction can be achieved using existing metallurgical ***,the ample reserves of water ice on the Moon offer another means for oxygen *** paper offers a detailed overview of the leading technologies for achieving oxygen production on the Moon,drawing from an analysis of lunar resources and environmental *** delves into the principles,processes,advantages,and drawbacks of water-ice electrolysis,two-step oxygen production from lunar regolith,and one-step oxygen production from lunar *** two-step methods involve hydrogen reduction,carbothermal reduction,and hydrometallurgy,while the one-step methods encompass fluorination/chlorination,high-temperature decomposition,molten salt electrolysis,and molten regolith electrolysis(MOE).Following a thorough comparison of raw materials,equipment,technology,and economic viability,MOE is identified as the most promising approach for future in-situ oxygen production on the *** the corrosion characteristics of molten lunar regolith at high temperatures,along with the Moon's low-gravity environment,the development of inexpensive and stable inert anodes and electrolysis devices that can easily collect oxygen is critical for promoting MOE technology on the *** review significantly contributes to our understanding of in-situ oxygen production technologies on the Moon and supports upcoming lunar exploration initiatives.

关键词： lunar resources in-situ oxygen production space metallurgy molten lunar regolith electrolysis

MMC与5-FU联合可调整缝线的小梁切除术治疗青光眼的疗效比较

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国际眼科杂志 2018年第10期18卷 1906-1908页

作者：陈晓莉宾莉徐智科中国四川省乐山市人民医院眼科 614000

目的:对比分析青光眼患者联合可调整缝线的小梁切除术中使用丝裂霉素C(mitomycin C,MMC)与5-氟尿嘧啶(5-fluorouracil,5-FU)的临床预后及并发症。方法:回顾性病例系列研究。选取本院2016-06/2017-10的71例71眼青光眼(包括原发性开角型... 详细信息

目的:对比分析青光眼患者联合可调整缝线的小梁切除术中使用丝裂霉素C(mitomycin C,MMC)与5-氟尿嘧啶(5-fluorouracil,5-FU)的临床预后及并发症。方法:回顾性病例系列研究。选取本院2016-06/2017-10的71例71眼青光眼(包括原发性开角型青光眼和原发性慢性闭角型青光眼)患者,分为两组,其中MMC组36例,5-FU组35例,均给予联合可调整缝线的小梁切除术,分别使用MMC、5-FU抗瘢痕治疗,术后随访6mo,比较两组患者的临床眼压控制疗效、滤过泡形态及并发症发生率。结果:MMC组患者术后眼压控制低于5-FU组,差异有统计学意义(P0. 05),MMC组功能性滤过泡形成率高于5-FU组,MMC组非功能性滤过泡形成率低于5-FU组,差异有统计学意义(P 0. 05)。结论:MMC及5-FU作为抗瘢痕药均能提高青光眼小梁切除手术的成功率,MMC能将眼压降到更低,形成功能性滤过泡方面MMC优于5-FU,根据患者制定个性化的手术方案MMC与5-FU的并发症发生率无明显差异,使用5-FU时需术后多次分离滤过泡及结膜下再次注射5-FU。

关键词：青光眼可调整缝线小梁切除术丝裂霉素C 5-氟尿嘧啶预后

Comparative study of standard and mini-perc renal access in percutaneous nephrolithotomy

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Comparative study of standard and mini-perc renal access in ...

ComParative study of standard and mini-Perc renal access in Percutaneous nePhrolithotomy

第十五届全国泌尿外科学术会议

作者： Jian-Ming GUO, Guo-Min WANG, zhi-bin xu Dept. of Urology, Zhongshan Hospital, Fudan University. SHANGHAI,CHINA, 200032

Objective:To Compare the efficacy and safety of standard and mini-perc renal access in percutaneous nephrolithotomy. Methods :From Feb 2006 to Jan 2008, 200 patients were enrolled into two procedures, standard or mini...

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ComParative study of standard and mini-Perc renal access in ...

The response of oridonin on renal cell carcinoma

第十六届全国泌尿外科学术会议

作者： Jian-Ming GUO,Guo-Min WANG,zhi-bin xu, Yuan-Feng YANG DePt of Urology,Zhongshan HosPital,Fudan University, SHANGHAI,CHINA 200032

Introduction and Objective:To ComPare the efficacy and safety of standard and mini-Perc renal access in Percutaneous *** and Methods: From Dec 2006 to Dec 2008,228 consecutive Patients were randomly enrolled into two ...

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The response of oridonin on renal cell carcinoma