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Quadratic Lie Superalgebras Generalized by Balinsky–Novikov Superalgebras

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Acta Mathematica Sinica,English Series 2019年第2期35卷 213-226页

作者： Yi TAO zhi qi chen Yan WANG Chern Institute of Mathematics Nankai University School of Mathematical Science & LPMC Nankai University School of Mathematics Tianjin University

Balinsky–Novikov superalgebras were introduced by Balinsky for constructing super-Virasoro type Lie superalgebras. In this paper, we give sufficient and necessary conditions for a Lie superalgebra generalized by a Ba... 详细信息

关键词： Balinsky-Novikov superalgebra Lie superalgebra quadratic Lie superalgebra

Experimental investigation of an adjustable ejector for CO_2 heat pump water heaters

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2009年第11期10卷 1678-1682页

作者： Guang-ming chen Li-xia LIANG Li-ming TANG Xiao-xiao XU zhi-jiang ZHU qi chen State Key Laboratory of Clean Energy Utilization Institute of Refrigeration and Cryogenics Zhejiang University Hangzhou 310027 China

An adjustable ejector expansion device for a CO2 heat pump water heater (HPWP) is proposed to improve the system performance. It has been designed to investigate experimentally the effects of the motive nozzle throat area of the ejector, entrained flow pressure, back pressure and primary flow pressure on the entrainment ratio. Experiments based on different motive nozzle throat areas were conducted and the results of the prototype ejector using CO2 as working fluid are presented. The results show that an adjustable ejector can achieve high performance and work well in a wide range of working conditions.

关键词： Adjustable elector System nerformance CO2 heat oumo water heater (HPWH) Entrainment ratio

Changes in Schlemm’s canal,trabecular meshwork,and relevant parameters in the early stage after SMILE of myopia patients

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International Journal of Ophthalmology(English edition) 2022年第2期15卷 291-298页

作者： Dan-Dan Yang zhi-qi chen Wei chen He Yin Jing-Kai Peng Jun-Ming Wang Department of Refractive Surgery Wuhan Eye Good Ophthalmic HospitalWuhan 430014Hubei ProvinceChina Department of Ophthalmology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030Hubei ProvinceChina

AIM:To observe the changes in Schlemm’s canal(SC),trabecular meshwork(TM),and anterior chamber relevant parameters after small incision lenticule extraction(SMILE) of myopia ***:A total of 58 eyes from 30 patients who underwent SMILE were divided into a low and moderate myopia group(group A,32 eyes) and a high myopia group(group B,26 eyes).The diameter and area of the SC,the width and thickness of TM obtained by CIRRUS HD-OCT5000,and the related anterior chamber parameters obtained by Pentacam anterior segment analysis system,accommodation amplitude(AMP) were observed pre-and *** preoperative intraocular pressure(IOP) and postoperative correction of intraocular pressure(IOPcc) were ***:The diameter and area of the SC in the two groups were significantly increased postoperatively(all P0.05).The corneal curvature,central anterior chamber depth,and anterior chamber volume decreased after SMILE surgery(all P<0.01).There was a weak negative correlation between the SC area change and AMP change in group A(r=-0.362,P<0.01).The postoperative IOP decreased after correction by Shah formula(P<0.05).CONCLUSION:SC and TM in myopia patients change in the early postoperative stage of SMILE and the IOP is decline.

关键词： Schlemm’s canal trabecular meshwork intraocular pressure myopia small incision lenticule extraction

In vivo quantification of human aqueous veins by enhanced depth imaging optical coherence tomography and optical coherence tomography angiography images

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International Journal of Ophthalmology(English edition) 2023年第9期16卷 1482-1488页

作者： zhi-qi chen Wei chen Chao-Hua Deng Jing-Min Guo Hong Zhang Jun-Ming Wang Department of Ophthalmology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030Hubei ProvinceChina

AIM:To investigate the aqueous vein in vivo by using enhanced depth imaging optical coherence tomography(EDI-OCT)and optical coherence tomography angiography(OCTA).METHODS:In this cross-sectional comparative study,30 healthy participants were *** of the aqueous and conjunctival veins were captured by EDI-OCT and OCTA before and after water *** area,height,width,location depth and blood flow of the aqueous vein and conjunctival vein were measured by Image J ***:In the static state,the area of the aqueous vein was 8166.7±3272.7μm^(2),which was smaller than that of the conjunctival vein(13690±7457μm^(2),P<0.001).The mean blood flow density of the aqueous vein was 35.3%±12.6%,which was significantly less than that of the conjunctival vein(51.5%±10.6%,P<0.001).After water loading,the area of the aqueous vein decreased significantly from 8725.8±779.4μm^(2)(baseline)to 7005.2±566.2μm^(2)at 45min but rose to 7863.0±703.2μm^(2)at 60min(P=0.032).The blood flow density of the aqueous vein decreased significantly from 41.2%±4.5%(baseline)to 35.4%±3.2%at 30min but returned to 45.6%±3.6%at 60min(P=0.021).CONCLUSION:The structure and blood flow density of the aqueous vein can be effectively evaluated by OCT and *** may become biological indicators to evaluate aqueous vein changes and aqueous outflow resistance under different interventions in glaucoma patients.

关键词： aqueous vein optical coherence tomography optical coherence tomography angiography water drinking test

Analogs of microgravity: the function of Schlemm's canal, intraocular pressure and autonomic nervous during the head-down tilt test in healthy subjects

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International Journal of Ophthalmology(English edition) 2021年第9期14卷 1419-1423页

作者： Wei chen zhi-qi chen Yan Xiang Chao-Hua Deng Hong Zhang Jun-Ming Wang Department of Ophthalmology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030Hubei ProvinceChina

AIM:To evaluate the ocular outcomes and to elucidate possible mechanisms underlying intraocular pressure(IOP)change following the head-down tilt(HDT)***:The study included 21 participants at the Department of Ophthalmology of Tongji *** received the test of I-care tonometry,enhanced depth imaging optical coherence tomography and heart rate variability(HRV)analysis before and after 15 min HDT *** lumen area of Schlemm’s canal(SCAR),IOP,HRV were ***:IOP increased significantly after 20°head down position from 14.0±3.0 to 17.0±3.3 mm Hg(P<0.001).SCAR decreased from 13449.0±5454.9μm^(2) at sitting condition to 9576.6±4130.9μm^(2) post 15 min HDT *** frequency(HF)indices increased significantly from 1462±865 Hz at baseline to 2128±824 *** rate(HR)decreased significantly from 76±11.48 to 70±11.52 bpm after the *** linear regression analysis showed that the difference of HF and SCAR significantly correlated with each other during the HDT(R^(2)=20%,P=0.04).CONCLUSION:These outcomes perform the first evidence of the activation of autonomic nervous system of HDT may cause the collapse of Schlemm’s canal lumen,which in turn leading to the increased IOP.

关键词： head-down tilt aqueous humor Schlemm’s canal autonomic nervous system intraocular pressure

Cystamine ameliorates liver fibrosis induced by carbon tetrachloride via inhibition of tissue transglutaminase

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World Journal of Gastroenterology 2007年第32期13卷 4328-4332页

作者： Jiang-Feng qiu zhi-qi Zhang Wei chen zhi-Yong Wu Department of General Surgery Renji Hospital Shanghai Jiaotong University School of Medicine Shanghai 200127 China

AIM： To investigate the anti-fibrosis effect of the tissue transglutarninase （tTG） specific inhibitor cystarnine on liver fibrosis. METHODS： Sixty-eight male Sprague Dawley rats were divided into three groups： normal control, liver fibrosis control and cystamine-treated group. Liver fibrosis was induced by intraperitoneal injection of carbon tetrachloride （CCl4）, and Cystarnine was administrated by intraperitoneal injection starting 2 d before the first administration of CCl4. Animals in each group were further divided into 2 subgroups according to two time points of 4 wk and 8 wk after treatment. Hepatic function, pathological evaluation （semi-quantitative scoring system, SSS） and liver hydroxyproline （Hyp） content were examined. Real-time PCR was used to detect the expression of tTG, smooth muscle alpha actin （α-SMA）, tissue inhibitor of metalloproteinase 1 （TIMP-1） and collagen-1 mRNA. The expressions of tTG and α-SMA protein were detected by Western Blotting. RESULTS： Eight weeks after treatment, the SSS score of liver was significantly less in the cystamine group than that in the fibrosis control group （P 〈 0.01）. The levels of alanine arninotransferase （ALT） and total bile acid （TBA） at the 4 wk and 8 wk time points were decreased in the cystamine group compared with those in fibrosis controls （P 〈 0.01）. Liver hydroxyproline content at the 4 wk and 8 wk time points showed a substantial reduction in the cystamine group compared to fibrosis controls （P 〈 0.01）. The expression of tTG, α-SMA, collagen-1, TIMP-1 mRNA and tTG, as well as α-SMA protein was downregulated in the cystamine group compared to fibrosis controls. CONCLUSION： Cystamine can ameliorate CCl4 induced liver fibrosis and protect hepatic function. The possible mechanism is related to the reduced synthesis of the extracellular matrix （ECM） caused by the inhibition of hepatic stellate cell activation and decreased expression of TIMP-1.

关键词： Tissue transglutaminase Cystamine Liver fibrosis Cross linking Extracellular matrix

Ocular biometry in the adult population in rural central China: a population-based, cross-sectional study

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International Journal of Ophthalmology(English edition) 2015年第4期8卷 812-817页

作者： Ting Fu Yin-Wei Song zhi-qi chen Jun-Wen He Kun qiao Xu-Fang Sun Hong Zhang Jun-Ming Wang Department of Ophthalmology Tongji Hospital Tongji Medical College Huazhong University of Science and Technology

·AIM: To describe the distribution and determinants of ocular biometric parameters and to ascertain the relative importance of these determinants in a large population of adults in rural central China.·METHODS: A population-based, cross-sectional study performed in rural central China included 1721 participants aged 40 or more years. Ocular biometrical parameters including axial length(AL), anterior chamber depth(ACD), radius of corneal curvature(K) and horizontal corneal diameter [white-to-white(WTW)distance] were measured using non-contact partial coherence interferometry [intraocular lens(IOL)-Master].·RESULTS: Ocular biometric data on 1721 participants with a average age of 57.0 ±8.7y were analyzed at *** general mean AL, ACD, mean corneal curvature radius(MCR), WTW were 22.80±1.12, 2.96±0.36, 7.56±0.26 and 11.75 ±0.40 mm, respectively. The mean values of each parameter in 40 to 49, 50 to 59, 60 to 69, and 70 to91 years age groups were as follows: AL, 22.77 ±0.87,22.76 ±1.06, 22.89 ±1.41, 22.92 ±0.80 mm; ACD, 3.10 ±0.32,2.98 ±0.34, 2.86 ±0.36, 2.77 ±0.35 mm; MCR, 7.58 ±0.25,7.54 ±0.26, 7.55 ±0.26, 7.49 ±0.28 mm; WTW, 11.79 ±0.38,11.75 ±0.40, 11.72 ±0.41, 11.67 ±0.41 mm. The AL, ACD,MCR and WTW were correlated with age and the AL was correlated with height and weight.·CONCLUSION: Our findings can serve as an important normative reference for multiple purposes and may help to improve the quality of rural eye care.

关键词： epidemiological investigation axial length anterior chamber depth Chinese population

Performance gain with variable chunk size in GFS-like file systems

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通讯和计算机（中英文版） 2008年第6期5卷 54-60页

作者： YANG zhi-feng TU qi-chen FAN Kai ZHU Lei chen Ri-shan PENG Bo Networks Lab Peking University Beijing 100871 China

Community nurses＇ knowledge need toward traditional chinese medicine and related factors in China： A cross-sectional survey

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TMR Integrative Nursing 2018年第2期2卷 87-93页

作者： Yu Li zhi-qi chen Dong-qin Kang qi Liu Zi-Pan Wang Jing Wang Shu-Jin Yue Nursing School Beijing University of traditional Chinese Medicine Beijing China

Purpose：The aim of the study was to examine the knowledge need toward Traditional Chinese Medicine （TCM） in nurses who worked in Community Health Centers, and to explore the related factors in the current situation of China. Subject and setting： Participants worked in five community health centres across Chaoyang Beijing, and each com- munity health centre includes 4-7 health stations. A questionnaire survey was administered to 218 registered commu- nity nurses using cluster sampling. The investigation was conducted after obtaining informed consent from each par- ticipant. Design： A descriptive cross-sectional design was used to gather data in this study. Instruments： The survey tool was a 5-point Likert-type questionnaire designed by experts in TCM and related fields, which had good face va- lidity and internal consistency. Results： The nursing technology of TCM scored highest score in our research （42.87±5.74）. Next came disease prevention in TCM （21.02±2.67）. The lowest mean score was for the usage of Chinese herbal medicine （15.03±2.77）. The significant related factors for nurses＇ knowledge need towards TCM were educa- tional background （P 〈 0.05）, working unit （P 〈 0.01）, ＂on-the-job training on TCM＂（P 〈 0.01） and ＂have studied lit- erature on Chinese medicine＂（P 〈 0.05）. Conclusion： This results suggest nurses working in community care would like to learn more about TCM. Improving community nurses＇ understanding and learning of TCM can promote the application and promotion of TCM nursing technology in the community. Therefore, we could adopt targeted education for community nurses, in order to meet their knowledge needs, and to promote the application of traditional Chinese medicine knowledge to the community.

关键词： Community nurses Traditional Chinese medicine Knowledge need