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Searching for Variable Stars in the Field of NGC 7789

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Chinese Journal of Astronomy and Astrophysics 2003年第2期3卷 151-165页

作者： xiao-bin zhang, Li-Cai Deng, Yu Xin and Xu ZhouNational Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012 CAS-PKU Joint Beijing Astrophysics Center, Beijing 100871 National Astronomical Observatories CAS NAOC Beijing 100012 China CAS-PKU Joint Beijing Astrophysics Center Beijing 100871

We present the results of a time-series CCD photometric survey of variable stars in the field of the open cluster NGC 7789. In a field of about one degree centering on the cluster, a total of 28 new variable stars are discovered (14 W UMa systems, nine EA-type eclipsing binaries, one RR Lyr star, and four unclassified). In addition, we recovered 11 old variables previously discovered by other authors. Preliminary parameters are given for some of these variables.

关键词： open clusters: individual (NGC 7789) - stars: variables (general) - binaries: general

Flow-induced vibration characteristics of the U-type Coriolis mass flowmeter with liquid hydrogen

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2022年第6期23卷 495-504页

作者： Xiang-xiang PEI Xiang LI Hao-hao XU Xuan-hong YE xiao-bin zhang Institute of Refrigeration and Cryogenics Zhejiang UniversityHangzhou 310027China Zhejiang Energy Technology Research Institute Co. Ltd.Hangzhou 310003China

Compared with liquid nitrogen(LN_(2))and water,the density of liquid hydrogen(LH_(2))is more than one order of magnitude smaller,which leads to significantly different flow-induced vibration characteristics in the coriolis mass flowmeter(CMF).Based on the Euler beam theory,the complex set of equations of fluid-solid interactions for the U-type pipe Coriolis flowmeter with LH_(2)is *** calculation results are firstly validated by comparing the dimensionless frequency,displacement,and twist mode shape with the theoretical and experimental results in the other publications with water and kerosene as the working ***,the results of dimensionless frequency,phase difference,and time lag for LH_(2)are compared with those for LN_(2)and water,and the effects of the dimensionless flow velocity,sensor position,and the radius of the curved pipe are analyzed in detail for LH_(2).Results show that the time lag of LH_(2)is an order of magnitude smaller than that for LN_(2)or *** excitation frequency for LH_(2)is much larger than that for LN_(2).Effects of geometric parameters on the time lag are also analyzed for the three fluids and the results contribute to the design optimization of a CMF for LH_(2).

关键词： Coriolis mass flowmeter(CMF) Liquid hydrogen(LH_(2)) Cryogenic fluid Flow-induced vibration

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中国大规模空分研究进展（英文）

Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2014年第5期15卷 309-322页

作者： xiao-bin zhang Jian-ye CHEN Lei YAO Yong-hua HUANG Xue-jun zhang Li-min QIU Institute of Refrigeration and Cryogenics Zhejiang University Hangzhou Hangyang Co. Ltd. Institute of Refrigeration and Cryogenics Shanghai Jiao Tong University

中国钢铁、化工等行业对工业气体需求的快速增长，极大地促进了大规模空分技术的发展。目前，中国生产的单套空分设备最大氧产量达到了120000Nm^3／h，单位能耗为0．38kWh／m^3。本文介绍了中国大规模空分技术发展水平，回顾了中国大规... 详细信息

中国钢铁、化工等行业对工业气体需求的快速增长，极大地促进了大规模空分技术的发展。目前，中国生产的单套空分设备最大氧产量达到了120000Nm^3／h，单位能耗为0．38kWh／m^3。本文介绍了中国大规模空分技术发展水平，回顾了中国大规模空分工业的发展历史。以成熟的60000Nm^3／h空分系统为例，详细介绍了分子筛吸附器、空压机、板翅换热器、透平膨胀机和精馏塔等主要设备的技术参数。然后介绍了中国正在发展中的80000～120000Nm^3／h空分工艺和装备。最后讨论了中国大规模空分技术存在的主要问题及未来发展方向。

关键词：空分深低温大规模装置技术发展

Neuropathological characteristics of abnormal white matter functional signaling in adolescents with major depression

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World Journal of Psychiatry 2024年第2期14卷 276-286页

作者： Xin-Lin Huang Ju Gao Yong-Ming Wang Feng Zhu Jing Qin Qian-Nan Yao xiao-bin zhang Hong-Yan Sun Imaging and Nuclear Medicine Jiamusi UniversityJiamusi 154000Heilongjiang ProvinceChina Department of Psychiatry The Affiliated Guangji Hospital of Soochow UniversitySuzhou 215137Jiangsu ProvinceChina School of Biology&Basic Medical Sciences Medical College of Soochow UniversitySuzhou 215137Jiangsu ProvinceChina Department of Radiology Shanghai Anting HospitalShanghai 20000China Department of Radiology The Affiliated Guangji Hospital of Soochow UniversitySuzhou 215137Jiangsu ProvinceChina

BACKGROUND Major depression disorder(MDD)constitutes a significant mental health *** surveys indicate that the lifetime prevalence of depression in adolescents is much higher than that in adults,with a corresponding increased risk of *** studying brain dysfunction associated with MDD in adolescents,research on brain white matter(WM)is *** researchers even mistakenly regard the signals generated by the WM as noise *** fact,studies have shown that WM exhibits similar blood oxygen level-dependent signal *** alterations in WM signals and their relationship with disease severity in adolescents with MDD remain *** To explore potential abnormalities in WM functional signals in adolescents with *** This study involved 48 adolescent patients with MDD and 31 healthy controls(HC).All participants were assessed using the Patient Health Questionnaire-9 Scale and the mini international neuropsychiatric interview(MINI)suicide *** addition,a Siemens Skyra 3.0T magnetic resonance scanner was used to obtain the subjects'image *** DPABI software was utilized to calculate the WM signal of the fractional amplitude of low frequency fluctuations(fALFF)and regional homogeneity,followed by a two-sample t-test between the MDD and HC *** component analysis(ICA)was also used to evaluate the WM functional ***’s correlation was performed to assess the relationship between statistical test results and clinical *** Compared to HC,individuals with MDD demonstrated a decrease in the fALFF of WM in the corpus callosum body,left posterior limb of the internal capsule,right superior corona radiata,and bilateral posterior corona radiata[P<0.001,family-wise error(FWE)voxel correction].The regional homogeneity of WM increased in the right posterior limb of internal capsule and left superior corona radiata,and decreased in the left superior longitudinal fasciculus(P<0.001,FWE voxel corre

关键词： White matter Regional homogeneity The fractional amplitude of low-frequency fluctuations Independent component analysis Adolescents Major depression disorders

Cavitation evolution and damage by liquid nitrogen in a globe valve

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2022年第2期23卷 101-117页

作者： Xia ZHOU xiao-qin ZHI Xu GAO Hong CHEN Shao-long ZHU Kai WANG Li-min QIU xiao-bin zhang Institute of Refrigeration and Cryogenics Zhejiang UniversityHangzhou 310027China State Key Laboratory of Technologies in Space Cryogenic Propellants Beijing 100028China

Valves are key components of the safety of fluid transportation systems because of induced disturbance and cavitation damage in *** this study,a 2D model of a cryogenic globe valve with liquid nitrogen(LN_(2))as working fluid was established by Fluent,and thermal effects were specially considered in the *** validity of the LN_(2) cavitation model was verified by the experimental data of hydrofoil LN_(2) cavitation from earlier studies by *** characteristics of LN2 in the cryogenic globe valve under three typical working conditions were *** average pressure and pressure pulse at different positions of the wall were further studied to reveal cavitation risks from fatigue and *** show that with similar valve structure and openings,the pressure pulsation frequencies of LN_(2) are lower than those of water,and the shape and location of the cavitation clouds also show significant *** LN_(2) cavitation,an extended period of valve opening at 66% should be avoided since its pressure pulse peak is the largest compared to openings of 33% and 100%,and reaches 5×10^(7) *** opening of 33% should also be monitored because of the large torque caused by the pressure difference between the two sides of the valve *** prevent resonance,a critical state for the valve opening and the connecting pipe length is *** predictions of cryogenic cavitation in the globe valve are helpful for the safe and reliable operation of cryogenic fluid transport systems.

关键词： Cavitation Thermal effect Cryogenic liquids Cryogenic globe valve

Effect and Safety of Peroral Endoscopic Cardial Constriction for Gastroesophageal Reflux Disease

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Chinese Medical Journal 2017年第14期130卷 1749-1750页

作者： Xue Li xiao-bin zhang Hai-Qing Hu Hui-Kai Li xiao-xiao Wang En-Qiang Linghu Department of Radiology Nanlou Clinic The General Hospital of the People&#39 s Liberation Army Beijing 100853 China Department of Gastroenterology The General Hospital of the People&#39 s Liberation Army Beijing 100853 China

Gastroesophageal reflux disease （GERD） is a common digestive system disease,characterized by series of discomfort symptoms,which are caused by stomach or duodenal contents refluxing to the *** is now widely prevalent around the *** epidemiological studies have demonstrated that the incidence of GERD is 10-20% in Western countries and it has also risen to 10.5% in Asian countries in recent years.

关键词： Effect Endoscopy Gastroesophageal Reflux Disease Peroral Endoscopic Cardial Constriction Safety

NSVS 1908107, an EB-type eclipsing binary in the open cluster NGC 869

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Research in Astronomy and Astrophysics 2016年第7期16卷 77-82页

作者： Yang Pan Zhi-Quan Luo xiao-bin zhang Li-Cai Deng Kun Wang Yang-Ping Luo Wei-Jing Fang Yin-Jiang Peng Jin-Jiang Sun Qi-Li Liu Qiang Zhou Physics and Space Science College China West Normal University Key Laboratory of Optical Astronomy National Astronomical Observatories Chinese Academy of Sciences Purple Mountain Observatory Chinese Academy of Sciences

We present a time-series BV CCD photometry for an EB-type eclipsing binary NSVS 1908107, a member of the young open cluster NGC 869. The photometric solution was obtained by using the 2003 version of the Wilson-Devinney code. It reveals that the system is a semi-detached binary with the secondary component filling its Roche lobe. The mass ratio was determined to be 0.059±0.001. With the physical parameters of the cluster, the masses, radii and luminosities of the two components of NSVS 1908107 are estimated to be M1 = 10.34±2.29 M⊙, R1 = 4.65re±0.34 Rspectivel⊙, L1 = 8076 y. The results s±371 L = 2.40 how tha⊙and M2 = 0.61 t the secondary co±0.13M⊙, R2±0.17 R⊙, L2 = 1054±48 L⊙mponent could be a giant or subgiant star with the outer envelope being stripped.

关键词： binaries eclipsing binaries semi-detached stars giant stars individual(NSVS 1908107)

Investigation of long-term implantation of BuMA stent in a porcine coronary model

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Chinese Medical Journal 2012年第22期125卷 4083-4087页

作者： CHEN Ming WANG Xin-gang ZHENG Bo PENG Hong-yu zhang xiao-yan zhang bin HUO Yong Peking Univ Hosp 1 Dept Cardiol Beijing 100034 Peoples R China Beijing Anzhen Hosp Dept Cardiol Beijing 100029 Peoples R China Peking Univ Dept Cardiol Shougang Hosp Beijing 100144 Peoples R China

Background Stent-based delivery of sirolimus has been shown to reduce neointimal hyperplasia significantly. However, the long-term effect of the polymer is thought to initiate and sustain an inflammatory response and contribute to the occurrence of late complications. Our study aimed to evaluate the efficacy and safety of the BuMA biodegradable drug-coated sirolimus-eluting stent （BSES） for inhibiting neointimal hyperplasia in a porcine coronary model. Methods Four types of stents were implanted at random in different coronary arteries of the same pig： BSES （n=24）, bare metal stent （BMS）（n=24）, biodegradable polymer coated stent without drug （PCS）（n=24） and only poly （n-butyl methacrylate） base layer coated stent （EGS）（n=23）. In total, 26 animals underwent successful random placement of 95 oversized stents in the coronary arteries. Coronary angiography was performed after 28 days, 90 days and 240 days of stent implantation. After 14 days, 28 days, 90 days and 240 days, 6 animals at each timepoint were sacrificed for histomorphologic analysis. Results The 28-day, 90-day and 240-day results of quantitative coronary angiography （QCA） showed reduction in luminal loss （LL） in the BSES group when compared with the BMS group; （0.20±0.35） mm vs. （0.82±0.51） mm （P=-0.035）, （0.20±0.30） mm vs. （0.93±0.51） mm （P=-0.013）, and （0.18±0.16） mm vs. （0.19±0.24） mm （P=0.889）, respectively. By 28-day, 90-day and 240-day histomorphomeric analysis results, there was also a corresponding significant reduction in neointimal tissue proliferation with similar injury scores of BSES compared with the BMS control; average neointimal area （0.90±0.49） mm2 vs. （2.16±1.29） mm2 （P=0.049）, （1.53±0.84） mm2 vs. （3.41±1.55） mm2 （P=-0.026）, and （2.43±0.95） mm2 vs. （3.12±1.16） mm2 （P=0.228）, respectively. High magnification histomorphologic examination revealed similar inflammation scores and endothelialization scores in both the BSES and BMS groups. Conclusions The BuMA biodegradable drug-coated sirol

关键词： biodegradable polymer electro-grafting base layer drug-eluting stent porcine coronary model

Major depressive disorder is associated with mitochondrial ND6 T14502C mutation in two Han Chinese families

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World Journal of Psychiatry 2024年第11期14卷 1746-1754页

作者： Pan Jing Hai-Hang Yu Ting-Ting Wu Bi-Hua Yu Ming Liang Ting-Ting Xia Xue-Wen Xu Ting Xu Ling-Jiang Liu xiao-bin zhang Suzhou Medical College Soochow UniversitySuzhou 215123Jiangsu ProvinceChina Department of Psychiatry Affiliated Kangning Hospital of Ningbo UniversityNingbo Kangning HospitalNingbo 315201Zhejiang ProvinceChina Department of Psychiatry Xiangshan Third People’s HospitalNingbo 315700Zhejiang ProvinceChina Department of Psychiatry Suzhou Guangji HospitalThe Affiliated Guangji Hospital of Soochow UniversitySuzhou 215137Jiangsu ProvinceChina

BACKGROUND Globally,the World Health Organization ranks major depressive disorder(MDD)as the leading cause of ***,MDD molecular etiology is still poorly *** To explore the possible association between mitochondrial ND6 T14502C mutation and *** Clinical data were collected from two pedigrees,and detailed mitochondrial genomes were obtained for the two proband *** assessment of the resulting variants included an evaluation of their evolutionary conservation,allelic frequencies,as well as their structural and functional *** mitochondrial whole genome analysis,phylogenetic,and haplotype analysis were performed on the *** Herein,we reported the clinical,genetic,and molecular profiling of two Chinese families afflicted with *** Chinese families exhibited not only a range of onset and severity ages in their depression but also extremely low penetrances to *** analyses of mitochondrial genomes from these pedigrees have resulted in the identification of a homoplasmic T14502C(I58V)*** polymorphism is located at a highly conserved isoleucine at position 58 of ND6 and distinct mitochondrial DNA(mtDNA)polymorphisms originating from haplogroups M10 and *** Identifying the T14502C mutation in two individuals with no genetic relation who exhibit symptoms of depression provides compelling evidence that this mutation may be implicated in MDD ***,the two Chinese pedigrees that carried the T14502C mutation did not exhibit any functionally significant mutations in their ***,the phenotypic expression of the T14502C mutation related to MDD may be influenced by the nuclear modifier gene(s)or environmental factors.

关键词： Major depressive disorder Mitochondrial DNA ND6 T14502C Mutation Haplogroup Chinese