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Geometric Realization of Adams Maps

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Acta Mathematica Sinica,English Series 2011年第5期27卷 863-870页

作者： Xian zu LIN Institute of Mathematics Chinese Academy of Sciences Beijing 100190 P. R. China

Let 6/P be a homogenous space with G a compact connected Lie group and P a connected subgroup of G of equal rank. As the rational cohomology ring of G/P is concentrated in even dimen- sions, for an integer k we can define the Adams map of type k to be lk ： H^＊（G/P,Q）→ H^＊（G/P,Q）, lk（u） = k^iu, u ∈ H^2i（G/P,Q）. We show that if k is prime to the order of the Weyl group of G2 then lk can be induced by a self map of G/P. We also obtain results which imply the condition that k is prime to the order of the Weyl group of G is necessary.

关键词： Homogenous space self map Adams map

GenomeSyn:a bioinformatics tool for visualizing genome synteny and structural variations

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Journal of Genetics and Genomics 2022年第12期49卷 1174-1176页

作者： zu-Wen Zhou Zhi-Guang Yu Xiao-Ming Huang Jin-Shen Liu Yi-Xiong Guo ling-ling Chen Jia-Ming Song State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources College of Life Science and TechnologyGuangxi UniversityNanningGuangxi 530004China College of Stomatology Guangxi Medical UniversityNanningGuangxi 530021China National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural UniversityWuhanHubei 430070China

Advances in the next-generation and long-read sequencing technologies have promoted the development of genome-wide comparative genomics analysis,and constructing pangenomes and identifying structural variations(SVs)are becoming the frontier of *** genomics is of critical importance for determining the gene function and the evolutionary basis of traits.

关键词： traits Genome structural

A class of estimators of the mean survival time from interval censored data with application to linear regression

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Applied Mathematics(A Journal of Chinese Universities) 2008年第4期23卷 377-390页

作者： ZHENG zu-kang Dept. of Statist. School of Management Fudan Univ. Shanghai 200433 China

A class of estimators of the mean survival time with interval censored data are studied by unbiased transformation method. The estimators are constructed based on the observations to ensure unbiasedness in the sense that the estimators in a certain class have the same expectation as the mean survival time. The estimators have good properties such as strong consistency （with the rate of O（n^-1/1 （log log n）^1/2）） and asymptotic normality. The application to linear regression is considered and the simulation reports are given.

关键词： interval censored data linear regression

Role of texture before rolling: a research based on texture and magnetic properties of 4.5 wt.% Si non-oriented electrical steel

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Journal of Iron and Steel Research International 2024年第8期31卷 1973-1986页

作者： Yu-fan Wang Guo-qing zu Shi-cheng Sun ying Han Wei-wei Zhu Hui Wu Yu Zhao Xu Ran Key Laboratory of Advanced Structural Materials of Ministry of Education Changchun University of TechnologyChangchun 130012JilinChina CRRC Changchun Railway Vehicles Co. Ltd.Changchun 130000JilinChina School of Metallurgy Northeastern UniversityShenyang 110819LiaoningChina School of Mechanical MaterialsMechatronic and Biomedical EngineeringUniversity of WollongongWollongongNSW 2522Australia

The evolution of microstructure,texture,and magnetic properties with random texture,near-copper texture,weak near-cube texture,and strong λ fiber(/ND(normal direction))before rolling of non-oriented electrical steel was *** recrystallized hot bands with different textures but similar grain sizes were prepared by pre-annealing at low-temperature and high-temperature normalization *** was observed that the final annealed products exhibited similar recrystallized *** contrast,the final annealed product with more 2 fiber before rolling exhibited a stronger cube *** the fiber before rolling becoming stronger,the proportion of(111)deformed matrices became larger,which could be observed in the early recrystallization *** overwhelmingly dominant 2 orientation nuclei are formed in the(111)deformed matrix and become the dominant ***,the best magnetic properties are obtained in the products with strong 2 fiber before rolling,corresponding to the strong cube texture and low anisotropyparameter.

关键词： Texture before rolling Non-oriented electrical steel-Nucleation Grain growth Magnetic property

Pedicled greater omentum flap for preventing bile leak in liver transplantation patients with poor biliary tract conditions

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Hepatobiliary & Pancreatic Diseases International 2007年第5期6卷 470-473页

作者： Ye, Qi-Fa Niu, ying She, Xing-Guo Ming, ying-Zi Cheng, Ke Ma, Yin Ren, zu-Hai Cent S Univ Xiangya Hosp 3 Res Ctr Natl Hlth Minist Transplantat Med Engn & Technol Changsha 410013 Peoples R China

BACKGROUND: Bile leak remains a main complication in liver transplantation patients with poor biliary tract conditions, mainly caused by an insufficient blood supply or dysplasia of the biliary tract. Although Roux-en-Y modus operandi can be adopted, the risk of other complications of the biliary tract such as infection increases. Using pedicled greater omentum flaps to wrap the anastomotic stoma, which increases the biliary tract blood supply, may reduce the incidence of bile leak. METHODS: Fourteen patients undergoing piggy-back liver transplantation and having poor biliary tract conditions were treated with pedicled greater omentum flaps to wrap the anastomotic stoma of the biliary tract. Their clinical data were analyzed retrospectively. RESULTS: Of the 14 patients, only one (7.1%) had a mild bile leak on the 8th day post-operation and fully recovered after symptomatic treatment. The other patients had no biliary complications. CONCLUSIONS: Using pedicled greater omentum flaps to wrap the anastomotic stoma of the biliary tract is an effective way to prevent bile leak in liver transplantation patients, especially those with poor biliary tract conditions. However, experience with this surgical technique still needs to be further explored.

关键词： liver transplantation bile leak greater omentum flap

The Effect of Nimesulide on the Expression of NF-κB,Bcl-2 and Bax in the Human Gastric Cancer SGC-7901 Cell Line

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Chinese Journal of Clinical Oncology 2006年第3期3卷 196-201页

作者： zu＇an Zhu ying Liu Tao Cui Sujuan Fei Department of Radiotherapy Xuzhou No.4 People＇s Hospital Xuzhou 221002China. Department of Pathology of Xuzhou Medical College Xuzhou 221002 China. Department of Gastroenterology Affiliated Hospital of Xuzhou Medical CollegeXuzhou 221002 China.

OBJECTIVE To investigate whether nimesulide can suppress tumor growth and induce apoptosis in SGC-7901 gastric cancer cells and to explore the molecular mechanism involved. METHODS SGC-7901 cells were cultured in RPMI 1640 medium containing different concentrations of nimesulide （0,12.5, 50, 100, 200, 400 μmol/L）. The MTT assay, morphological observation, electron microscopy （EM）, immunohistochemical analysis and Western blot analysis were employed to investigate the effects of nimesulide on the SGC-7901 cells and to explore possible related molecular mechanisms. RESULTS Nimesulide inhibited the growth of SGC-7901 cells and elicited typical apoptotic morphologic changes. Nimesulide also decreased NF-κB and Bcl-2 expression, but increased the level of the Bax protein. The positive rate of Bcl-2 protein expression at 0, 50, 100 and 200 μmol/L of nimesulide was 58.3±14.0%, 50.2±9.9%, 32.8±5.0% and 22.7±5.5% respectively based on immunohistochemical staining. The positive rate of Bax protein expression was 22.0±5.7%, 29.2±6.5%, 42.7±5.9% and 74.5±9.1% and the NF-κB expression was 74.2±10.9%, 61.8±7.6%, 36.7±10.9% and 17.5±12.3%, Significant differences were found between so μmol/L and 100 μmol/L and 200μmol/L. Western blot analysis also showed that the expression of NF-κB was decreased. CONCLUSION Nimesulide suppresses tumor growth and induces apoptosis by inhibiting NF-κB expression, which may be related to the overexpression of Bax relative to Bcl-2 expression.

关键词： nimesulicle apoptosis SGC-7901 gastric cancer cells NF-κB Bcl-2 Bax.

MicroRNA Primary Transcripts and Promoter Elements Analysis in Soybean (Glycine max L. Merril.)

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Journal of Integrative Agriculture 2013年第9期12卷 1522-1529页

作者： LI Jing LIU Yong-xin HAN ying-peng LI Yong-guang GUO Mao-zu LI Wen-bin Key Laboratory of Soybean Biology Ministry of Education/Northeast Agricultural University Department of Computer Science and Technology Harbin Institute of Technology

The importance of microRNA （miRNA） at the post-transcriptional regulation level has recently been recognized in both animals and plants. In recent years, many studies focused on miRNA target identification and functional analysis. However, little is known about the transcription and regulation of miRNAs themselves. In this study, the transcription start sites （TSSs） for 11 miRNA primary transcripts of soybean from 11 miRNA loci （of 50 loci tested） were cloned by a 5＂ rapid amplification of cDNA ends （5＂ RACE） procedure using total RNA from 30-d-old seedlings. The features consistent with a RNA polymerase II mechanism of transcription were found among these miRNA loci. A position weight matrix algorithm was used to identify conserved motifs in miRNA core promoter regions. A canonical TATA box motif was identified upstream of the major start site at 8 （76%） of the mapped miRNA loci. Several cis-acting elements were predicted in the 2 kb 5＂ to the TSSs. Potential spatial and temporal expression patterns of the miRNAs were found. The target genes for these miRNAs were also predicted and further elucidated for the potential function of the miRNAs. This research provides a molecular basis to explore regulatory mechanisms of miRNA expression, and a way to understand miRNA-mediated regulatory pathways and networks in soybean.

关键词： soybean miRNA primary transcript RACE TATA box motif promoter cis-acting element

Exosomes Derived from Hydroquinone-transformed Human Bronchial Epithelial Cells Inhibited Recipient Cell Apoptosis by transferring miR-221

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Biomedical and Environmental Sciences 2021年第7期34卷 520-527页

作者： XIAN Hong Yi CHEN ying ZHANG Jia ying TANG Mei Lin LIAN Zhen Wei JIANG Ran HU zu Qing LI Yan Feng HU Da Lin Department of Environmental Health Guangdong Provincial Key Laboratory of Tropical Disease ResearchSchool of Public HealthSouthern Medical UniversityGuangzhou 510515GuangdongChina Grade 2017 Undergraduate Student Majoring in Preventive Medicine School of Public HealthSouthern Medical UniversityGuangzhou 510515GuangdongChina Grade 2018 Undergraduate Student Majoring in Clinical Medicine Department of Clinical MedicineJiamusi UniversityJiamusi 154007HeilongjiangChina

Objective Although benzene is a confirmed environmental carcinogen,the mechanism of its carcinogenicity remains largely *** suggested oncogene,miR-221,is elevated and plays important roles in various tumors,but its role in benzene-induced carcinogenesis remains *** In the present study,we constructed hydroquinone(HQ,a representative metabolite of benzene with biological activity)-transformed malignant cell line(16 HBE-t)and analyzed the level of miR-221 in it with *** from 16 HBE-t cells incubated with or without an miR-221 inhibitor were isolated by ultracentrifugation,characterized by transmission electron microscopy and laser scanning confocal microscope,and then transfected into 16 HBE *** effects of exosomal miR-221 on apoptosis induced by HQ in recipient cells were determined using flow *** The amount of miR-221 in 16 HBE-t was significantly increased compared with *** recipient cells ingested exosomes derived from 16 HBE-t,miR-221 was increased,and apoptosis induced by HQ was *** miR-221 in 16 HBE-t using an inhibitor did not significantly alter miR-221 or apoptosis in recipient *** Exosomal miR-221 secreted by 16 HBE-t inhibits apoptosis induced by HQ in normal recipient cells.

关键词： Benzene Toxic mechanism Apoptosis Exosomes miR-221 Intercellular communications

Unified Explanation of Quark-Lepton Mass Spectra in q-Deformed Quantum Mechanics

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Chinese Physics Letters 2000年第2期17卷 91-93页

作者： ZHANG Jian-zu School of Science East China University of Science and TechnologyShanghai 200237

The quark-lepton mass spectra in q-deformed quantum mechanics are investigated. The theoretical formula of the spectrum includes two new quantum numbers: the q-exciting number n describing generations and the scaling indexes Mi describing families. This formula shows two exponential increases in the mass distribution as generation n increases, the intervals of masses in a given family exponentially increase, and the mass splittings among different members in a generation also exponentially increase. The theoretical values of masses of quarks and leptons reasonably agree with the experimental data except for the electron mass which is one order larger.

关键词： quark exponentially quantum