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Magic Wavelength of an Optical Clock Transition of Barium

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Chinese Physics Letters 2011年第7期28卷 93-96页

作者： YU geng-Hua ZHONG jia-Qi LI Run-Bing WANG Jin ZHAN Ming-Sheng State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics and MathematicsChinese Academy of SciencesWuhan 430071 Center for Cold Atom Physics Chinese Academy of SciencesWuhan 430071 Graduate University Chinese Academy of SciencesBeijing 100049

Similar to most of the other alkaline earth elements,barium atoms can be candidates for optical clocks,thus the magic wavelength for an optical lattice is important for the clock *** calculate the magic wavelength of a possible clock transition between 6s21S0 and 6s5d3D2 states of barium *** theoretical result shows that there are three magic wavelengths 615.9 nm,641.2 nm and 678.8 nm for a linearly polarized optical lattice laser for barium.

关键词： transition barium Magic

Clinicopathological and prognostic analysis of 429 patients with intrahepatic cholangiocarcinoma

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World Journal of Gastroenterology 2009年第47期15卷 5976-5982页

作者： Wei-Feng Shen Wei Zhong Feng Xu Tong Kan Li geng Feng Xie Cheng-Jun Sui jia-Mei Yang Department of Special Treatment Eastern Hepatobiliary Surgery Hospital Second Military Medical University 225 Changhai Road Shanghai 200438 China Department of Gastroenterology Changzheng Hospital Second Military Medical University 415 Fengyang Road Shanghai 200003 China

AIM:To understand the clinicopathological characteristics and treatment selections and improve survival and provide valuable information for patients with intrahepatic cholangiocarcinoma(ICC). METHODS:We retrospectively evaluated 5311 liver cancer patients who received resection between October 1999 and December *** these,429(8.1%)patients were diagnosed with ICC,and their clinicopathological, surgical,and survival characteristics were analyzed. RESULTS:Upper abdominal discomfort or pain(65.0%), no symptoms(12.1%),and hypodynamia(8.2%)were the major causes for medical *** tests showed 198(46.4%)patients were HBsAg positive, 90(21.3%)hadα-fetoprotein>20μg/L,50(11.9%) carcinoembryonic antigen>10μg/L,and 242(57.5%) carbohydrate antigen 19-9(CA19-9)>37 U/*** data was available for 329(76.7%)patients and their mean survival time was 12.4 *** overall survival of the patients with R0,R1 resection and punching exploration were 18.3,6.6 and 5.6 mo,respectively. Additionally,CA19-9>37 U/mL was associated with lymph node metastases,but inversely associated *** analysis indicated that radical resection,lymph node metastases,macroscopic tumor thrombi and size,and CA19-9 were associated with prognosis. CONCLUSION:Surgical radical resection is still the most effective means to cure *** laboratory tests(such as CA19-9)can effectively predict the survival of the patients with ICC.

关键词： Intrahepatic cholangiocarcinoma Diagnosis Pathology Surgery Survival

Development of high-performance dry-pressed anisotropic permanent ferrite for La-Ca-Sr-Co system

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Rare Metals 2020年第1期39卷 89-94页

作者： Dai-Man Zhu Zhao-Wen geng Rong-Ming Liu Xiao-Wen Zhou Li-Ying jia Guo-Hui Hu Qian Wang Bing-Shan Li National Engineering Technology Research Center for Magnetic Materials BGRIMMBeijing102600China BGRIMM Magnetic Materials and Technology(Fuyang)Co. Ltd.Fuyang236000China

In this work,the BMS-12 pre-sintered material was used as the basic material,and the optimal secondary additive addition amount was found by the wet pressing ***,the anisotropic ferrite material was prepared by dry-pres sing method,and the effects of camphor adhesives,calcium stearate lubricant and powder particle size on the magnetic properties were *** experimental results show that the appropriate addition amount of camphor adhesive and calcium stearate lubricant is 0.6 wt%and 0.8 wt%,*** remanence and coercivity can be obtained for particle size of 0.85-1.00μ*** dry-pressed magnet ferrite was prepared with typical properties of magnetic induction intensity of Br=421 mT,induction coercivity of Hcb=296 kA·m-1,intrinsic coercivity of Hcj=369 kA·m-1 and maximum energy product of(BH)max=33.3 kJ·m-3,which have reached the level of TDK corporation product of FB5 *** shows that the dry-pressed magnet of La-Ca-Sr-Co system has higher remanence and intrinsic coercivity than the traditional wetpressed Sr-ferrite.

关键词： Dry-press molding Permanent magnetic ferrite La-Ca-Sr-Co system Magnetic properties

Dual Fluorescent Protein(yEGFP/DsRed-Express-2) Bioassay System for Rapid Screening for Chemical Mutagens Based on RNR3 Regulation in Saccharomyces Cerevisiae

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Biomedical and Environmental Sciences 2021年第5期34卷 421-424页

作者： LIU Xing CHEN geng LU Gang Yu YAO jia ZHU Fang Yu XU Jun LI Xiang Ming Preventive Medicine Department of Yangzhou Medical College Yangzhou UniversityYangzhou 225001JiangsuChina Institute of Translational Medicine Medical CollegeYangzhou UniversityYangzhou 225001JiangsuChina Institute of Toxicology and Risk Assessment Jiangsu Provincial Center for Disease Control and PreventionNanjing 210009JiangsuChina jiangsu Key Laboratory of Experimental and Translational Non-coding RNA Research Yangzhou 225001JiangsuChina

Over the past several years,the most widely used in vitro tests for mutagenicity have been those performed on *** include the Ames test,SOS,and SOS/umu chromotest[1,2].The Ames test is the most commonly used system,bu... 详细信息

关键词： SOS/umu automata Ames

Dicobalt Complex with Metal-metal Interaction of a Naphthyridine and Pyrazine Amine Ligand

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Chinese Journal of Structural Chemistry 2017年第6期36卷 1011-1019页

作者： geng Shu-Bo WANG Wen-Zhen LI Lei-Lei jia Xin-Gang LIU Shuang Gene-Hsiang Lee Shie-Ming Peng School of Chemistry and Chemical Engineering Xi'an Shiyou University Department of Chemistry National Taiwan University

Molecular structure of a naphthyridine and pyrazine amine ligand, N2,N7-di（pyrazin-2-yl）-1,8-naphthyri-dine-2,7-diamine（H2dpznda 1） was studied, and a three-dimensional supramolecular network with a double helix chain structure through intermolecular hydrogen bonds and π-π interactions between the naphthyridine and pyrazine rings was depicted. Through ligand 1, [Co2（μ2-dpznda）2（μ2-CH3OH）2]（2） was obtained and two ligands coordinate to two Co2＋）as tetradentate bridging ligands. Single crystal and magnetism study on 2 revealed that the complex exhibited weak yet significant metal-metal interaction.

关键词： metal-metal interaction cobalt-cobalt bond hydrogen bonds π-π interaction,magnetic property

Pure Metal Clusters with Atomic Precision for Nanomanufacturing

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Nanomanufacturing and Metrology 2022年第3期5卷 230-239页

作者： Haiming Wu Hanyu Zhang Lijun geng Yuhan jia Benben Huang Mengzhou Yang Baoqi Yin Xin Lei Zhixun Luo Beijing National Laboratory for Molecular Sciences(BNLMS)and State Key Laboratory for Structural Chemistry of Unstable and Stable Species Institute of ChemistryChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China

Advances in cluster science have enabled the preparation of atomically precise metal clusters with one to a hundred atoms under controllable expansion *** introducing typical gas-phase cluster preparation and reaction apparatuses,this work summarized recent progress in preparing pure metal clusters of single-atom resolution,including neutral and ionic ones,with typical examples of Al,V,Nb,Fe,Co,Ni,Rh,Pt,Ag,Cu,and *** the development of soft-landing deposition technology,the size-selective pure metal clusters with strict atomic precision and predictive property will benefit nanomanufacturing down to atomic and near-atomic *** work serves as a modest motivation to stimulate the interest of scientists focusing on interdisciplinary subjects.

关键词： Metal cluster Gas phase Cluster assembly Deposition Printing

Muscle RING-finger protein-1 (MuRFl) functions and cellular localization are regulated by SUMOl post-translational modification

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Journal of Molecular Cell Biology 2019年第5期11卷 356-370页

作者： Gabriel Heras Arvind Venkat Namuduri Leonardo Traini Ganna Shevchenko Alexander Falk Sara Bergstrom Lind Mi jia geng Tian Stefano Gastaldello Department of Physiology and Pharmacology Karolinska Institutet Solnavagen 9 Quarter B5 Stockholm SE-17177 Sweden Department of Chemistry-BMC Analytical Chemistry Uppsala University Box 599 Uppsala SE-75124 Sweden Precision Medicine and Pharmacy Research Center Binzhou Medical University Yantai 264003 China

The muscle RING-finger protein-1 (MuRFl) is an E3 ubiquitin ligase expressed in skeletal and cardiac muscle tissues and it plays important roles in muscle remodeling. Upregulation of MuRFl gene transcription participates in skeletal muscle atrophy, on contrary downregulation of protein expression leads to cardiac hypertrophy. MuRFl gene point mutations have been found to generate protein aggregate myopathies defined as muscle disorder characterized by protein accumulation in muscle fibers. We have discovered that MuRFl turned out to be also a target for a new post-translational modification arbitrated by conjugation of SUM01 and it is mediated by the SUMO ligases E2 UBC9 and the E3 PIASy/4. SUMOylation takes place at lysine 238 localized at the second coiled-coil protein domain that is required for efficient substrate interaction for polyubiquitination. We provided evidence that SUMOylation is essential for MuRFl nuclear translocation and its mitochondria accumulation is enhanced in hyper? glycemic conditions delivering a stabilization of the overall SUMOylated proteins in cultured myocytes. Thus, our findings add this SUM01 post-translational modification as a new concept to understand muscle disorders related to the defect in MuRFl activity.

关键词： TRIM63/MuRFl muscle remodeling SUMO protein degradation hyperglycemia

Formation of G-phase in 20Cr32Ni1Nb Stainless Steel and its Effect on Mechanical Properties

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Acta Metallurgica Sinica(English Letters) 2017年第9期30卷 829-839页

作者： Xiao-Feng Guo Ying-Ying Ni jian-Ming Gong Lu-Yang geng jian-Qun Tang Yong jiang Xian-Kai jia Xin-Yu Yang School of Mechanical and Power Engineering Nanjing Tech UniversityNanjing 211816China Key Lab of Design and Manufacture of Extreme Pressure Equipment Nanjing 210037China

A series of tensile tests, Charpy impact tests, optical microscopy observations, and field emission-scanning electron microscopy examinations, were carded out to investigate the mechanical properties and microstructural evolution of 20Cr32NilNb steel. Experimental results indicate that the as-cast microstructure of the steel typically consists of a supersaturated solid solution of austenite matrix with a network of interdendritic primary carbides （NbC and M23C6）. In the ex-service samples, large amounts of secondary carbides precipitate within austenite matrix. Besides the growth and coarsening of NbC and M23C6 carbides during service condition, the Ni-Nb silicides known as G-phase （Nil6Nb6Si7） are formed at the interdendritic boundaries. The microstructural evolution results in the degradation of the mechanical properties of the ex-service steel. In addition, the precipitate rate of G-phase, depending in part on Si content, varies greatly for the 20Cr32NilNb steel, which plays a key role in the long-term microstructural stability of the steel. Based on the X-ray diffraction data, time-temperature-transformation curve for the steel is obtained from the aged specimens.

关键词： 20Cr32NilNb Embrittlement G-phase TTT dial, ram

A mixed culture of Propionibacterium freudenreichii and Lactiplantibacillus plantarum as antifungal biopreservatives in bakery product

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Food Bioscience 2022年第3期47卷 413-420页

作者： Qiong Ran Fan Yang Min geng Lujie Qin Zhongyi Chang Hongliang Gao Deming jiang Chunjing Zou Caifeng jia School of Life Sciences East China Normal UniversityShanghai200241China

In this study,15 strains of Lactic acid bacteria(Allata et al.)and 6 strains of propionic acid bacteria(PAB)were firstly tested for their antifungal activity against three spoilage fungi,Aspergillus niger,Penicillium crustosum and Aspergillus *** strains of LAB and PAB were selected and assessed,alone or paired,for their abilities to inhibit the most resistant mold,Aspergillus niger.A mixed culture of *** D6 and *** L9 was found to be the most active and their optimal inoculum was 1×10^(8) and 1×10^(6) CFU/mL,***,the in situ antifungal effect of the mixed culture was evaluated against bakery product spoilage *** was found that the growth of airborne fungi was delayed for up to 7 *** cell number of *** L9 was slightly increased by the presence of *** *** of three main acids(propionic,lactic and acetic acid)produced by the protective cultures suggested that acetic acid was mainly responsible for the antifungal *** conclusion,the mixed culture of *** and *** may be exploited as biopreservatives in bakery products.

关键词： Lactic acid bacteria Propionibacterium freudenreichii Antifungal activity Bread