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Itinerant ferromagnetism entrenched by the anisotropy of spin-orbit coupling in a dipolar Fermi gas

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Frontiers of physics 2023年第5期18卷 227-235页

作者： Xue-Jing Feng Jin-Xin Li Lu Qin Ying-Ying Zhang ShiQiang Xia Lu Zhou ChunJie Yang ZunLue zhu Wu-Ming Liu xing-Dong Zhao School of Physics Henan Normal UniversityXinxiang 453000China Department of Physics School of Physics and Electronic ScienceEast China Normal UniversityShanghai 200241China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China

We investigate the itinerant ferromagnetism in a dipolar Fermi atomic system with the anisotropic spin–orbit coupling(SOC),which is traditionally explored with isotropic contact *** first study the ferromagnetism transition boundaries and the properties of the ground states through the density and spin-flip distribution in momentum space,and we find that both the anisotropy and the magnitude of the SOC play an important role in this *** propose a helpful scheme and a quantum control method which can be applied to conquering the difficulties of previous experimental observation of itinerant *** further study reveals that exotic Fermi surfaces and an abnormal phase region can exist in this system by controlling the anisotropy of SOC,which can provide constructive suggestions for the research and the application of a dipolar Fermi ***,we also calculate the ferromagnetism transition temperature and novel distributions in momentum space at finite temperature beyond the ground states from the perspective of experiment.

关键词： itinerant ferromagnetism spin-orbit coupling cold atom quantum simulation dipolar Fermi gas dipole-dipole interaction

Effects of LPA on the development of sheep in vitro fertilized embryos and attempt to establish sheep embryonic stem cells

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Journal of Integrative Agriculture 2023年第4期22卷 1142-1158页

作者： ZHANG Xue-min HUANG Xiang-hua WANG Jing xing Ying LIU Fang XIANG Jin-zhu WANG Han-ning YUE Yong-li LI Xue-ling State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock School of Life SciencesInner Mongolia UniversityHohhot 010020P.R.China Department of Urology Inner Mongolia Autonomous Region People’s HospitalHohhot 010017P.R.China

Lysophosphatidic acid(LPA)is a small molecule glycerophospholipid,which regulates multiple downstream signalling pathways through G-protein-coupled receptors to achieve numerous functions on oocyte maturation and embryo *** this study,sheep in vitro fertilized embryos were applied to investigate the effects of LPA on early embryos development and embryonic stem cell *** first,the maturation medium containing estrus female sheep serum and synthetic oviduct fluid(SOF)were optimized for sheep IVF,and then the effects of LPA were *** 0.1 to 10μmol L^(–1),LPA had no significant effect on the cleavage rate(P>0.05),but the maturation rate and blastocyst rate increased dependently with LPA concentration(P<0.05),and the blastocyst morphology was *** the LPA concentration was 15μmol L^(–1),the maturation rate,cleavage rate and blastocyst rate decreased significantly(P<0.05),and the blastocyst exhibited abnormal morphology and could not develop into highquality ***,the exogenous LPA increases the expression of LPAR2,LPAR4,TE-related gene CDX-2and pluripotency-related gene OCT-4 in sheep early IVF embryos with the raise of LPA concentration from 0.1 to 10μmol L^(–1).The expression of LPAR2,LPAR4,CDX-2 and OCT-4 from the LPA-0.1μmol L^(–1)to LPA-10μmol L^(–1)groups in early embryos were extremely significant(P<0.05),while the expression of these genes significantly decreased in 15μmol L^(–1)LPA-treated embryos compared with LPA-10μmol L^(–1)group(P<0.05).The inner cell mass in 15μmol L^(–1)LPA-treated embryos was also disturbed,and the blastocysts formation was ***,the sheep IVF blastocysts were applied to establish embryonic stem *** results showed that LPA made the blastocyst inoculated cells grow towards TSC-like *** enhanced the fluorescence intensity and mRNA abundance of OCT-4 and CDX-2 as the concentration increased from 0 to 10μmol L^(–1),while 15μmol L^(–1)LPA decreased OCT-4 and CDX

关键词： sheep in vitro fertilization LPA LPARs embryonic stem cells

太湖新银鱼种群摄食对小江浮游动物群落结构的影响

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水生态学杂志 2024年第3期45卷 138-147页

作者：张三峰沈建忠万成炎吉芬芬胡莲邱龙辉彭乐根朱稳华中农业大学水产学院湖北武汉430070 水利部中国科学院水工程生态研究所水利部水工程生态效应与生态修复重点实验室湖北武汉430079

明晰太湖新银鱼(Neosalanx taihuensis)种群生长与浮游动物群落结构的动态变化关系,可为小江水华暴发的控制与水生态健康管理提供理论依据。2019年逐月对小江太湖新银鱼与浮游动物样品进行采集,并分析太湖新银鱼胃含物组成与浮游动物群... 详细信息

明晰太湖新银鱼(Neosalanx taihuensis)种群生长与浮游动物群落结构的动态变化关系,可为小江水华暴发的控制与水生态健康管理提供理论依据。2019年逐月对小江太湖新银鱼与浮游动物样品进行采集,并分析太湖新银鱼胃含物组成与浮游动物群落结构特征。结果表明:(1)太湖新银鱼的饵料生物主要为桡足类,其次为枝角类,轮虫占比较少;(2)3月至6月(太湖新银鱼春群繁殖期)太湖新银鱼生物量迅速上升,而浮游动物群落结构在此期间呈小型化趋势,生物量由28.93 mg/L下降至1.13 mg/L,密度由21173.39个/L增加至26808.23个/L;7月小江禁捕结束,太湖新银鱼生物量开始急剧下降,小江浮游动物中桡足类和枝角类的密度与生物量迅速升高,于8月达到全年最高;(3)由于太湖新银鱼对枝角类和桡足类具有较强的选择性,故在其生物量较高的时期(5、6月),水体中枝角类和桡足类生物量占比显著低于其他时期(P<0.05)。由此认为,太湖新银鱼生物量与浮游动物群落结构变化存在较强的关联性,太湖新银鱼种群摄食的下行效应可能是小江浮游动物生物量下降及群落结构小型化的关键原因。

关键词：太湖新银鱼选择性摄食浮游动物下行效应三峡水库小江

Multiple imaging techniques in the diagnosis of ampullary carcinoma

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Hepatobiliary & Pancreatic Diseases International 2008年第6期7卷 649-653页

作者： Chen, Wei-xing Xie, Qi-Gui Zhang, Wei-Fang Zhang, Xian Hu, Tian-Tian Xu, Ping Gu, zhu-Ying Zhejiang Univ Sch Med Affiliated Hosp 1 Surg Intens Care Unit Hangzhou 310003 Zhejiang Peoples R China Zhejiang Univ Sch Med Affiliated Hosp 1 Dept Gastroenterol Hangzhou 310003 Zhejiang Peoples R China

BACKGROUND: Ampullary carcinoma is a neoplasia with a good prognosis compared to pancreatic cancer. But it is difficult to early diagnose because it lacks clear clinical symptoms. This study aimed to evaluate the efficacy of abdominal ultrasonography (US), enhanced computed tomography (CT), magnetic resonance cholangiopancreatography (MRCP) and endoscopic retrograde cholangiopancreatography (ERCP) in detecting ampullary carcinoma. METHODS: Forty-one patients with ampullary carcinoma who had been confirmed pathologically among the inpatients at the First Affiliated Hospital of Zhejiang University School of Medicine from February 2003 to March 2007 were analyzed retrospectively. The accuracy of US, CT, MRCP and ERCP were compared in the diagnosis of ampullary carcinoma. RESULTS: The accurate rate for detection of ampullary carcinoma with US was 26.83%. The accuracy of CT and ERCP in detection of ampullary tumors was 84.62% and 100%, respectively, which were significantly higher than that of US (P<0.05). The accuracy of MRCP in detection of ampullary tumors was similar to that of US in spite of visualization of obstruction and dilatation of the pancreaticobiliary duct with MRCP. CONCLUSIONS: Because of the obscure and late onset of symptoms, ampullary carcinoma is difficult to diagnose early. Multiple imaging techniques should be carried out appropriately in order to early diagnose the disease and improve the prognosis.

关键词： ampullary carcinoma abdominal ultrasonography computed tomography magnetic resonance cholangiopancreatography endoscopic retrograde cholangiopancreatography

Signal processing for noncoherent underwater acoustic communication approaching channel capacity

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Chinese Journal of Acoustics 2014年第4期33卷 337-347页

作者： WU Yanbo zhu Min zhu Weiqing xing Zeping Lab.of Ocean Acoustic Tech Institute of Acoustics Chinese Academy of Sciences State Key Laboratory of Acoustics Institute of Acoustics Chinese Academy of Sciences

Noncoherent underwater acoustic communication channel in adverse conditions is modeled as a phase-random Rayleigh fading channel,and its capacity curve is *** approach the channel capacity curve,the concatenated code of the nonbinary LDPC code and the constant weight code is proposed for noncoherent communication which can late be iteratively decoded in the probability *** information of channel amplitude or phase in the receiver,statistic parameters of the respective signal and noise bins were estimated based on the moment estimation method,the posterior probabilities of the constant weight code words were further calculated,and the nonbinary LDPC code was decoded with the nonbinary factor graph *** is verified by simulations that by utilizing the proposed concatenated code and its processing algorithm,gap to channel capacity curve is reduced by 3 dB when compared to the existing *** communication experiments were carried out in both deep ocean（vertical communication,5 km）and shallow lake（horizontal communication,near 3 km,delay spread larger than 50 ms）,in which the signal frequency band was 6 kHz to10 kHz,and the data transmission rate Was 357 *** proposed scheme can work properly in both experiments with a signal-to-noise ratio threshold of 2 *** performance of the proposed algorithm Was well verified by the experiments.

关键词： LDPC code Signal processing for noncoherent underwater acoustic communication approaching channel capacity OOK

An Optoelectronic thermometer based on microscale infrared-to-visible conversion devices

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Light(Science & Applications) 2022年第6期11卷 1158-1165页

作者： He Ding Guoqing Lv Xue Cai Junyu Chen Ziyi Cheng Yanxiu Peng Guo Tang Zhao Shi Yang Xie Xin Fu Lan Yin jian Yang Yongtian Wang xing Sheng Beijing Engineering Research Center of Mixed Reality and Advanced Display School of Optics and PhotonicsBeijing Institute of TechnologyBeijing 100081China Department of Electronic Engineering Beijing National Research Center for Information Science and TechnologyInstitute for Precision MedicineCenter for Flexible Electronics Technologyand IDG/McGovern Institute for Brain ResearchTsinghua UniversityBeijing 100084China School of Materials Science and Engineering Tsinghua UniversityBeijing 100084China

Thermometric detectors are crucial in evaluating the condition of target objects spanning from environments to the human ***-based thermal sensing tools have received extensive attention,in which the photon upconversion process with low autofluorescence and high tissue penetration depth is considered as a competent method for temperature monitoring,particularly in biomedical ***,we present an optoelectronic thermometer via infrared-to-visible upconversion,accomplished by integrated light receiving and emission *** fabricated thin-film,microscale devices present temperature-dependent light emission with an intensity change of 1.5%℃^(-1) and a spectral shift of 0.18 nm℃^(-1).The sensing mechanism is systematically characterized and ascribed to temperature dependent optoelectronic properties of the semiconductor band structure and the circuit operation *** device arrays showcase the capability for spatially resolved temperature ***,in vitro and in vivo experiments implemented with integrated fiber-optic sensors demonstrate real-time thermal detection of dynamic human activity and in the deep brain of animals,respectively.

关键词： visible optoelectronic thermal

首发未用药精神分裂症患者血清CRP、MT、IGF-1与氧化应激指标和认知功能的相关性研究

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现代生物医学进展 2024年第17期24卷 3381-3385页

作者：沈青峰朱永兴代荣荣李昱萱靳自斌徐州医科大学附属徐州东方医院精神科

目的：研究首发未用药精神分裂症（SP）患者血清C反应蛋白（CRP）、褪黑素（MT）、胰岛素样生长因子-1(IGF-1)与氧化应激指标和认知功能的相关性。方法：选择从2021年1月到2023年6月在徐州医科大学附属徐州东方医院接受治疗的首发未用... 详细信息

目的：研究首发未用药精神分裂症（SP）患者血清C反应蛋白（CRP）、褪黑素（MT）、胰岛素样生长因子-1(IGF-1)与氧化应激指标和认知功能的相关性。方法：选择从2021年1月到2023年6月在徐州医科大学附属徐州东方医院接受治疗的首发未用药SP患者140例作为观察组，按照阳性与阴性症状量表(PANSS)评分将患者分为高分组（≥70分）57例和低分组（<70分）83例。另选同期在我院接受健康体检的志愿者140例作为对照组。检测血清氧化应激指标、CRP、MT及IGF-1水平，采用MATRICS认知评估系统(MCCB)评分评估患者认知功能障碍。分析血清CRP、MT、IGF-1与PANSS评分、血清氧化应激指标、MCCB各项评分和总分的相关性。结果：观察组血清CRP较对照组更高，MT及IGF-1较对照组更低（P<0.05）。高分组血清CRP较低分组更高，MT及IGF-1较低分组更低（P<0.05）。高分组血清SOD及GSH-Px较低分组更低，而NO较低分组更高（P<0.05）。高分组MCCB各项评分及总分均较低分组更低，PANSS评分较低分组更高（P<0.05）。Pearson相关性发现，血清CRP与PANSS评分及NO呈正相关，与SOD、GSH-Px及MCCB各项评分和总分呈负相关（P<0.05）；血清MT和IGF-1与PANSS评分及NO呈负相关，与SOD、GSH-Px及MCCB各项评分和总分呈正相关（P<0.05）。结论：首发未用药SP患者血清CRP水平升高，MT及IGF-1水平降低，三者均与氧化应激指标和认知功能之间有明显的相关性。

关键词：精神分裂症 CRP MT IGF-1 氧化应激认知功能相关性

Analysis of stability of coal pillars with multi-coal seam strip mining

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中国有色金属学会会刊：英文版 2011年第S3期21卷 549-555页

作者： ZHANG Li-ya, DENG Ka-zhong, zhu Chuan-guang, xing Zheng-quan jiangsu Key Laboratory of Resources and Environmental Information Engineering, China University of Mining and Technology, Xuzhou 221116, China jiangsu Key Laboratory of Resources and Environmental Information Engineering China University of Mining and Technology Xuzhou 221116 China

Strip mining is one of the efficient measures to control surface subsidence and mining damage. However, the researches on the laws of the geological mining factors to upper and lower pillar's stability are still deficient in multi-coal seam strip mining at present. Based on the three dimension fast Lagrangian analysis of continua (short for FLAC3D) numerical simulation software, the laws of the stress increasing coefficient on the coal pillar and its stability were systematically studied for different depths, different mining widths, different interlayer spacings, different mining thicknesses, different properties of interstratified rock and the spacial relations of the upper and lower pillars in vertical alignment in multi-coal seam strip mining. The function relation between the stress increasing coefficient of upper and lower pillars with the mining depth, mining widths, interlayer spacing, mining thickness, property of interstratified rock and the spatial relationship were obtained.

关键词： multi-coal seam strip mining FLAC3D numerical simulation stability of coal pillar

Selective Reduction of 7-Demethylsinomenine

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Chemical Research in Chinese Universities 2008年第5期24卷 557-560页

作者： LI Yu-feng BU Qing-min QIAN Yi PAN Yi LI jian-xin HUANG Le-qun zhu Hong-jun School of Science Nanjing University of Technology Nanjing 210009 P. R. China Department of Chemistry School of Chemistry and Chemical Engineering School of Medicine Nanjing University Nanjing 210093 P. R. China

Several borohydride reagents： sodium borohydride, sodium cyanoborohydride, soudium acetoxyborohydride and soudium triacetoxyborohydride were screened, respectively, for the reduction of 7-demethylsinomenine, which was an α,β-dicarbonyl compound derived from sinomenine. Highly regio-and stereo-selectivity was acquired when sodium cyanoborohydride or NaBH（OAc）3 was used. The product was structurally confirmed as 7R configuration by NMR, X-ray crystal diffraction analysis. Some preliminary discussion was also made on the mechanism of the selective reduction.

关键词： 7-Demethylsinomenine Regioselective reduction Stereoselective reduction Borohydride reagents