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Constructing mild expanded graphite microspheres by pressurized oxidation combined microwave treatment for enhanced lithium storage

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Rare Metals 2021年第4期40卷 837-847页

作者： Can-Liang Ma zhen-Hui Hu Ning-Jing Song Yun Zhao yan-zhen liu Hui-Qi Wang Key Laboratory of Materials for Energy Conversion and Storage of Shanxi Province Institute of Molecular ScienceShanxi UniversityTaiyuan 030006China College of Chemistry and Chemical Engineering Jinzhong UniversityJinzhong 030619China CAS Key Laboratory of Carbon Materials Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001China School of Energy and Power Engineering School of Material Science and EngineeringNorth University of ChinaTaiyuan 030051China

The modified graphite anode materials have some prominent advantages over other anode materials in the industrial applications.A novel simple and gentle method is proposed to synthesize the mild expanded graphite microspheres(MEGMs) from flake graphite spheres through a combined modified pressurized oxidation combined with the microwave *** microstructural results demonstrate that moderately expanded MEGMs with an expansion volume between 4 and 10 ml·g^(-1)exhibit a highly microporous structure with an enlarged interlayer spacing,a decreased microcrystalline size,as well as an increased number of functional groups on the surface,resulting in the increased storage sites and spaces for lithium ions and the enhanced diffusion rate of lithium *** used as the anode material for lithium-ion batteries,the MEGM-T75t30 obtained by oxidation treatment at 75℃ for 30 min followed by microwave irradiation for expansion displays a high reversible capacity of 446.7 mAh·g^(-1) at 100 mA·g^(-1) after 100 cycles and excellent rate performance(330 and 116 mAh·g^(-1) at 800 and 3200 mA·g^(-1),respectively).Therefore,the MEGMs prepared by this convenient and mild method show excellent electrochemical properties and good application potential.

关键词： Pressurized oxidation Microwave treatment Mild expanded graphite microspheres Microstructure Graphitic anode material Lithium-ion battery

Preparation and Characterization of Multi-layer Poly(arylene sulfide sulfone) Nanofibers Membranes for Liquid Filtration

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Chinese Journal of Polymer Science 2019年第12期37卷 1248-1256,I0006页

作者： zhen-yan liu Zhi-Mei Wei Xiao-Jun Wang Gang Zhang Sheng-Ru Long Jie yang College of Polymer Science and Engineering Sichuan UniversityChengdu 610065China Analytical&Testing Center Sichuan UniversityChengdu 610064China State Key Laboratory of Polymer Materials Engineering Sichuan UniversityChengdu 610065China

Owing to the excellent filtration performance and low energy cost,polymeric nanofibers microfiltration(MF)membranes have attracted increasing ***(arylene sulfide sulfone)(PASS),as one of the structurally modified polymers based on poly-(phenylene sulfide)(PPS),has been selected as the raw material to fabricate nanofibers MF membranes via electrospun *** effects of PASS solution and the electrospinning processing parameters on the structural morphology of nanofibers were investigated in *** average diameter of PASS nanofibers was(296±46)nm under the optimal condition:polymer concentration of 0.27 g·m L^–1 PASS/DMI,applied voltage of 20 kV,and speed of collector drum of 300 r·min^–*** then the multi-layer PASS nanofibers MF membranes were fabricated from cold-pressing the optimized PASS nanofibers(as-prepared PASS nanofibers)*** morphology,porosity,pore size,mechanical properties,and surface wettability of the multi-layer PASS nanofibers MF membranes could be tuned by the layers of as-prepared nanofibers *** results demonstrated that the membrane with 6 layers(marked as PASS-6)exhibited the smallest porosity,smallest pore size,highest mechanical property,and best surface ***,the multi-layer PASS nanofibers MF membranes showed that the rejection ratio gradually increased,while the pure water flux decreased with increasing membranes *** PASS-6 membrane exhibited large water flux of 747.76 L·m^–2·h^–1 and high separation efficiency of 99.9%to 0.2μm particles,making it a promising candidate for microfilter.

关键词： Poly(arylene sulfide sulfone) Electrospinning Nanofibers membranes Microfiltration

The Fate of Mitochondria in Ibex-hirus Reconstructed Early Embryos

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Acta Biochimica et Biophysica Sinica 2004年第5期36卷 371-374页

作者： yan JIANG, Shu-zhen liu, yan-Ling ZHANG, Man-Xi JIANG, Qing-Yuan SUN, and Da-Yuan CHEN* State Key Laboratory of Reproductive Biology, Institute of Zoology, the Chinese Academy of Sciences, Beijing 100080, China State Key Laboratory of Reproductive Biology Institute of Zoology the Chinese Academy of Sciences Beijing 100080 China

Inter-species nuclear transfer could be used to preserve North Goat (Capra ibex), an endan- gered species. We established the culture conditions for ibex-hirus reconstructed embryos and optimized the method for DNA extractions of a single cell and early cloned embryo. By using mitochondria-specific probes of ibex and hirus respectively we found that mitochondria of donor cells can co-exist with recipients in 1-cell and 2-cell stages of the reconstructed embryos but not in the following developmental stages.

关键词： Capra ibex cloned embryos nuclear transfer mitochondria PCR

Genetic polymorphisms in cytochrome P4502E1, alcohol and aldehyde dehydrogenases and the risk of esophageal squamous cell carcinoma in Gansu Chinese males

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World Journal of Gastroenterology 2008年第9期14卷 1444-1449页

作者： yan-Mei Guo Qin Wang yan-zhen liu Huei-Min Chen Zhi Qi Qing-Hong Guo Department of Clinical Medicine Gansu College of Traditional Chinese Medicine Lanzhou 730000 Gansu Province China Department of Gastroenterology First Hospital of Lanzhou University Lanzhou 730000 Gansu Province China Matheson Library Library Monash University Victoria 3800 Australia

AIM:To evaluate the association between genetic polymorphisms in CYP2E1, ALDH2 and ADH1B and the risk of esophageal squamous cell carcinoma (ESCC) in a high risk area of Gansu Province, in Chinese males. METHODS: A case-control study was conducted to investigate the genetic polymorphisms of these enzymes (CYP2E1 *c1/*c2, ALDH2 *1/*2 and ADH1B *1/*1 genotypes). A total of 80 esophageal cancer cases and 480 controls were recruited. RESULTS: Compared with controls, cases had a greater prevalence of heavier alcohol consumption (53.8% vs 16.2%) and a higher proportion of alcohol drinkers with > 30 drink-years (28.8% vs 13.5%). Heavier alcohol consumption and alcohol drinking with > 30 drink- years increased the risk of ESCC, with ORs (95% CI) of 3.20 (1.32-9.65) and 1.68 (0.96-3.21). CYP2E1 (*c1/*c1), ALDH2 (*1/*2) and ADH1B (*1/*1) genotype frequencies were higher among patients with squamous cell carcinomas, at a level close to statistical significance (P = 0.014; P = 0.094; P = 0.0001 respectively). There were synergistic interactions among alcohol drinking and ALDH2, ADH1B and CYP2E1 genotypes. The risk of the ESCC in moderate-to-heavy drinkers with an inactive ALDH2 encoded by ALDH2 *1/*2 as well as ADH1B encoded by ADH1B *1/*1 and CYP2E1 encoded by CYP2E1 *c1/*c1 was higher than that in the never/rare-to-light drinkers with an active ALDH2 (*1/*1 genotype) as well as ADH1B (*1/*2 + *2/*2) and CYP2E1 (*c1/*c2 + *c2/*c2) genotypes, with a statistically significant difference; ORs (95% CI) of 8.58 (3.28-22.68), 27.12 (8.52-70.19) and 7.64 (2.82-11.31) respectively. The risk of the ESCC in moderate-to-heavy drinkers with ALDH2 (*1/*2) combined the ADH1B (*1/*1) genotype or ALDH2 (*1/*2) combined the CYP2E1 (*c1/*c1) genotype leads to synergistic interactions, higher than drinkers with ALDH2 (*1/*1) + ADH1B (*1/*2 + *2/*2), ALDH2 (*1/*1) + CYP2E1 (*c1/*c2 + *c2/*c2) respectively , ORs (95% CI) of 7.46 (3.28-18.32) and 6.82 (1.44-9.76) respectively. Individuals with the

关键词： Esophageal squamous cell carcinoma Cytochromes P4502E1 Alcohol dehydrogenases Aldehyde dehydrogenases Genetic polymorphisms

Primary spinal melanoma： a case report and literature review

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Chinese Medical Journal 2012年第22期125卷 4138-4141页

作者： yan Liang CHANG zhen liu yang HE Bao-rong HAO Ding-jun Xi An Jiao Tong Univ Coll Med Hong Hui Hosp Xian 710054 Shaanxi Peoples R China

This case report describes a 44-year-old woman with primary spinal cord malignant melanoma localized in the lumbar region. This is a very rare lesion. The patient presented with back pain and slight weakness in her lower extremities. Magnetic resonance imaging showed hyperintense signals on Tl-weighted images and hypointense signals on T2-weighted images. The entire tumor was removed surgically. The patient＇s postoperative clinical examination revealed mild neurological improvements. Histopathological investigations confirmed the tumor was a malignant melanoma. When treating common lesions of the lumbar spinal cord with a benign appearance, surgeons should be aware of the potential for malignant tumors.

关键词： spinal melanoma primary

SURFACE ENHANCED RAMAN SPECTRA OF PHENYLMERCAPTOTETRAZOLE AND MERCAPTOBENZOTHIAZOLE ON SILVER

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Chinese Chemical Letters 1992年第7期3卷 539-542页

作者： Chun yan liu, zhen Zong ZHANG and Xin Min REN The Center of Photoelectrochemistry, institute of Photographic Chemistry, Academia Sinica, Beijing 100101

Normal Haman Spectra(NRS) of solid PMT (1-phenyl-5-mercaptotetrazole) and MBT (2-mercaptobenzothiazole) and their surface enhanced Raman spectra (SERS) adsorbed on the surface of the silver subcolloidal particles are reported and compared. It is supposed that PMT adsorbed on silver with both N and S atoms whereas MBT may be adsorbed on silver through S atom.

关键词： MBT SERS SURFACE ENHANCED RAMAN SPECTRA OF PHENYLMERCAPTOTETRAZOLE AND MERCAPTOBENZOTHIAZOLE ON SILVER PMT

THE CHARACTERIZATION OF SILVER SUBCOLLOID USED IN SURFACE ENHANCED RAMAN SPECTROSCOPY

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Chinese Chemical Letters 1992年第7期3卷 543-546页

作者： Chun yan liu zhen Zong ZHANG Xin Min REN The Center of Photoelectrochemistry, Institute of Photographic Chemistry, Academia Sinica, Beijing, 100101

A clear light-yellow silver sol which has the visible spectral absorption at 390 nm, when adsorbed phenylmercaptotetrazole(PMT) or mercaptobenzothiazole(MBT), has a new absorption at 510-550 nm. It was found that the adsorption of halide ions competes with PMT and MBT. However, halide ions have a completely different influence from PMT and MBT on the spectral absorption of the silver sol. The differences may result from the change of the properties of the surface of the silver subcolloidal particles and from the bond forms combining adsorbates with the substrates.

关键词： MBT THE CHARACTERIZATION OF SILVER SUBCOLLOID USED IN SURFACE ENHANCED RAMAN SPECTROSCOPY PMT

Kinetics of low level chemiluminescence from plant leaf smoked by air pollutants

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Journal of Environmental Sciences 1998年第1期10卷 45-50页

作者： Wang Ying yan, Wang Jin guang Beijing Municipal Research Institute of Environmental Protection,Beijing 100037,China Ma Yu qin, Su zhen, Zhao Kai jian, Zhang Zhong lun, zheng yan zhen, liu Cheng xian Institute of Biophysics,Chinese Academy of Scie

The kinetics of low level chemiluminescence from Chinese white polpar leaf smoked by CO and two gaseous mixture of SO 2 and CO or SO 2, NO x and CO, and their luminescence intensity formula were described. The comparison of the results indicated that three kinds of the gaseous compounds could cause no changes of the substantial nature of foliar biophoton emission. However, they made the luminescence intensity, including I o (1) and I o (2) , altered in a certain degree, and the changes caused by the fumigation of CO and the mixed gas of SO 2 and CO were different from that made by the gaseous mixture of SO 2, NO x and CO in τ′ and τ″ of the photo induced luminescence from plant leaf.

关键词： kinetics low level chemiluminescence plant leaf air pollutants.

Effect of Gingko Injection on the Expression of NF-κB in Pulmonary Vessels of Rats with Portal Hypertension

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生物医学工程学杂志 2005年第S1期22卷 107-108页

作者： Chao WANG Juan HAN Zhong yan liu zhen yanG (Department of Integrative Surgery, Tongji Hospital, Tong ji Medical College, Hua Zhong University of Science and Technology, Wuhan 430030, China) Department of Integrative Surgery Tongji Hospital Tong ji Medical College Hua Zhong University of Science and Technology Wuhan 430030 China

1 IntroductionDomestic scholars have originated the conception of'portal hypertensive vasculopathy ( PHV)', which concerns multiple organ vasculopathies in portal hypertensive patients. Portal hypertensive pulmonary vasculopathy is also a kind of internal organ vasculopathy. The transcription factor nuclear factor κB (NF-κB) regulates the expressions of genes that contribute to acute inflammatory reactions in endothelium. Few have reported about the expression of NF-κB in pulmonary vessels of rats related with portal hypertension (PH). Firstly we detected the expression of NF-κB in pulmonary vessels of rats with PH induced by biliary cirrhosis. Then through injecting of gingko (GI) into abdominal cavity, we found that NF-κB's expression was inhibited. We propose that NF-κB may play an important role in the pathogenesis of PHV and GI can hinder the improvement of PHV through inhibiting the expression of NF-κB. This outcome may provide certain theoretic basis for a novel therapy of portal hypertension.

关键词： Effect of Gingko Injection on the Expression of NF GI B in Pulmonary Vessels of Rats with Portal Hypertension