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Tailoring morphology and bulk density of magnesium ethoxide particles by adding n-hexane and silicone oil

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Particuology 2020年第6期18卷 168-174页

作者： zhou Lan Yangcheng lu State Key Laboratory of Chemical Engineering Department of Chemical EngineeringTsinghua UniversityBeijing 100084China

In this work,we used the in ert substances silic one oil a nd n-hexane to modulate the solve nt environ ment,and in so doing tailor the preparation of magnesium ethoxide(Mg(0Et)2)*** found the following:(1)non polar n-hexane mainly modulates the polarity of the solvent to control the precipitation rate and size of the Mg(OEt)2 seeds,thereby triggering accelerated nucleation to form small primary particles;and(2)silicone oil(relatively high polarity and viscosity)facilitates the growth and agglomeration stage,to improve inter-particle dispersion and obtain relatively uniform Mg(OEt)2 *** summarized these findings in a comm on mechanism for preparing Mg(OEt)2 particles with uniform morphology,small size,and high bulk density as per the synergistic effect of n-hexane and silicone *** ratios of silicone oil end n-hexane are flexible,and afford various regular and well-dispersed Mg(OEt)2 particles that are 5-30μm in size and 0.2-0.7 g/cm^3 in bulk *** nanoparticles thus have the potential to serve in diverse applications such as catalysis.

关键词： Magnesium ethoxide Silicone oil n-Hexane Synergic effect

An exo Probe-based Reverse Transcription and Recombinase Polymerase Amplification for Rapid Detection of Feline Calicivirus in Cats

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Biomedical and Environmental Sciences 2024年第3期37卷 325-330页

作者： MU hong Yun zhou hong Lei JING Zheng lu Wei ZHANG Jian Wei Jiangsu Agri-animal Husbandry Vocational College Taizhou 225300JiangsuChina Boehringer Ingelheim Animal Health(Shanghai)Co. LTD.Shanghai 200040China

Feline calicivirus(FCV)was a highly prevalent RNA virus causing upper respiratory tract infections in cats through the mouth and nose around the world,result in the death of cats especially under 1 year old with upper respiratory tract disease(URTD)and virulent systemic disease(FCV-VSD)[1].Infected cats usually presented with mouth ulcers,salivation and ***,both recovered cats and asymptomatic carriers can still carry and spread the FCV virus for extended periods of time,contributing to the potential for *** presented a significant threat to the health and lives of cats,and rare wildlife and took a heavy financial loss on the pet industry,making the prevention and control of the virus ***,rapid identification of FCV in clinical samples was necessary to prevent the spread of FCV and avoid financial loss.

关键词： prevention respiratory Probe

Endonuclease-rolling circle amplification-based method for sensitive analysis of DNA-binding protein

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Chinese Chemical Letters 2009年第11期20卷 1315-1318页

作者： Min Li Li Dong Rui zhou hong Zhao Jin Ke Wang Zu hong lu The State Key Laboratory of Bioelectronics Southeast University Nanjing 210096 China Key Laboratory of Child Development and Learning Science Ministry of Education Southeast University Nanjing 210096 China

A sensitive approach for the qualitative detection of DNA-binding protein on the microarray was developed. DNA complexes in which a partial duplex region is formed from a biotin-primer and a circle single strand DNA （ssDNA） were spotted on a microarray. The endonuclease recognition site （ERS） and the DNA-binding sites （DBS） were arranged side by side within the duplex region. The working principle of the detection system is described as follows： when the DNA-binding protein capture the DBS, the endonuclease could not attach to the ERS, and the immobilized primer in the DNA complex could be extended along the circle ssDNA by rolling circle amplification （RCA）. When no protein protects the DBS, the ERS could be attacked by the endonuclease and subsequently no rolling circle amplification occurs. Thereby we can detect the sequence specific DNA-binding activity with high-sensitivity due to the signal amplification of RCA.

关键词： Rolling circle amplification DNA-binding protein Microarray

Hepatitis B virus X protein up-regulates tumor necrosis factor-α expression in cultured mesangial cells via ERKs and NF-κB pathways

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Asian Pacific Journal of Tropical Biomedicine 2013年第3期3卷 217-222页

作者： hong-Zhu lu Jian-Hua zhou Deptartment of Pediatrics Clinical Medical CollegeYangtze University Deptartment of Pediatrics Tongji HospitalTongji Medical CollegeHuazhong University of Science and Technology

Objective:To investigate the effects of hepatitis B virus(HBV)X protein(HBx)on the expression of tumor necrosis factor-α(TNF-α)in glomerular mesangial cells(GMCs)and the underlying intracellular signal ***:The plasmid pCI-neo-X that carries the X gene of hepatitis B virus was transfected into cultured *** expression in the transfected GMCs was assessed by ***-αprotein and mRNA were assessed by ELISA and semi-quantitative RT-PCR,*** kinase inhibitors-U0126,an inhibitor of extracellular signal-regulated kinases(ERKs);lactacvstin,an inhibitor of nuclear factor-κB(NF-κB);and SB203580,a selective inhibitor of p38 MAP kinase(p38 MAPK)were used to determine which intracellular signal pathways may underlie the action of HBx on TNF-αexpression in transfected ***:A significant increase in HBx expression in pCI-neo-X transfected GMCs was detected at 36 h and 48 h,which was not affected by any of those kinase inhibitors mentioned above.A similar increase in the expression of both TNF-αprotein and mRNA was also observed at 36 h and 48 h,which was significantly decreased in the presence of U0126 or lactacytin,but not ***:HBx upregulates TNF-αexpression in cultured GMCs,possibly through ERKs and NF-κB pathway,but not p38 MAPK pathway.

关键词： Heptitis B virus X protein Nuclear factor-κB Tumor necrosis factor-α Glomerulonephritis Extracellular signal-regulated kinase

Deformation characteristic of semi-solid ZCuSn10 copper alloy during isothermal compression

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Rare Metals 2016年第8期35卷 620-626页

作者： Jia Wang Han Xiao Long-Biao Wu Hai-Lian Hu De-hong lu Rong-Feng zhou Rong zhou College of Materials Science and Engineering KunmingUniversity of Science and TechnologyKunming 650093China College of Mechanical Engineering Sichuan University ofScience and EngineeringZigong 643000China

The compression tests were carried out by Gleeble-1500 thermo-mechanical simulator with samples of semi-solid ZCuSnl0 alloy prepared by strain-induced melt activation （SIMA） process. The original microstruc- ture and the deformation temperature of semi-solid ZCuSnl0 alloy are different. The strain is 0.2, and the strain rate is 1 s-1 for the compression test. The results show that when the semi-solid ZCuSnl0 alloy was pre- pared by SIMA process, the liquid fraction of semi-solid microstructure increases, and the solid grain is smaller, more uniform and more inclined to be round as the roiling pre-deformation increasing. The results also indicate that the deformation resistance of ZCuSnl0 alloy in semi-solid state decreases with the deformation temperature increas- ing or the solid fraction of original microstructure de- creasing. The stress-strain curves of the isothermal compression can be divided into quasi-elastic deformation stage and plastic deformation stage, and there are three deformation zones in the samples after isothermal com- pression, namely the difficult deformation zone, the large deformation zone and the free deformation zone. In the three deformation zones, the main deformation mechanism is flow of liquid incorporating solid particles （FLS） mechanism, plastic deformation of solid particles （PDS） mechanism and liquid flow （LF） combining with FLS mechanism, respectively.

关键词： ZCuSn10 copper alloy Semi-solid Isothermal compression Deformation characteristic

Study of damage to a high concrete dam subjected to underwater shock waves

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Earthquake Engineering and Engineering Vibration 2014年第2期13卷 337-346页

作者： lu lu Li Xin zhou Jing Faculty of Architecture and Civil Engineering Huaiyin Institute of Technology The State Key Laboratory of Coastal and Offshore Engineering Dalian University of Technology

To study the effect of a strong underwater shock wave on a concrete dam, this research aims to improve hammer impact methods in model tests. Six 1:200 scale models were designed and tested under distributed impact loads. A device was deployed for a direct measurement of the impact force at the upstream face of the dams. The model dam bases were anchored to prevent displacement. The experimental results indicate that the top part of the concrete dam is a weak zone, and the impact failure initiates with a fracture on the top of the dam. The peak value of impact stress increases when the second crack appears in the concrete dam from the upstream face to the downstream face. And, the level of the second crack in the dam body is lower as the peak value of impact stress increases. In this study, dynamic analysis was conducted by calculating the results to verify the effectiveness of a device to directly measure the impact force. This method may be used to approximately forecast the damage of concrete dam and may also be useful in other engineering applications.

关键词： underwater shock wave hammer impact impact force high concrete gravity dam forecast damage

Iron-based biochar as efficient persulfate activation catalyst for emerging pollutants removal:A review

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Chinese Chemical Letters 2023年第11期34卷 74-81页

作者： Jinjie lu Qinwei lu lu Di Yi zhou Yanbo zhou State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process East China University of Science and TechnologyShanghai 200237China School of Carbon Neutrality Future Technology East China University of Science and TechnologyShanghai 200237China

In recent years,biochar(BC)as a low-cost,easily available biomass product,is widely applied in sulfate radical-based advanced oxidation processes(SR-AOPs)for emerging pollutants ***,a state-of-art review of iron-based biochar catalysts is currently available in SR-AOPs application.A general summary of the development of biochar and the catalytic properties of biochar is ***,the synthetic strategies of different types of iron-based biochar catalysts are ***,the theoretical calculation to interpret the interaction between biochar and iron species is discussed to explore the activation *** the regeneration methods of biochar-based catalyst are *** unresolved challenges of the existent biochar-based SR-AOPs are pointed out,and the outlooks of future research directions are proposed.

关键词： Biochar Persulfate Emerging pollutants

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3S技术在我国农业生产中的应用

吉林农业科学 2009年第6期34卷 58-59,62页

作者：杨微周宏璐韩成伟高敬伟孙成东吉林省农业科学院农业经济与信息服务中心长春130033

近年来3S技术在全球发展迅速,农业是3S技术的重要应用领域。在我国,3S技术作为精确农业发展的重要技术支撑同样取得了长足的进步。本文对3S技术特点以及在我国农业上的应用现状进行了综述,并对3S技术应用前景进行了讨论。

关键词： 3S技术精确农业信息农业

Oxidative stress mediates CoCl2-induced prostate tumor cell adhesion:role of PKC and p38 MAPK

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Oxidative stress mediates CoCl2-induced prostate tumor cell ...