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A Hu sheep genome with the first ovine Y chromosome reveal introgression history after sheep domestication

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Science China(Life Sciences) 2021年第7期64卷 1116-1130页

作者： Ran Li Peng Yang Ming Li Wenwen Fang Xiangpeng Yue Hojjat Asadollahpour Nanaei Shangquan Gan duo du Yudong Cai Xuelei Dai Qimeng Yang Chunna Cao Weidong Deng Sangang He Wenrong Li Runlin Ma Mingjun Liu Yu Jiang Key Laboratory ofAnimal Genetics Breeding and Reproduction of Shaanxi ProvinceCollege of Animal Science and TechnologyNorthwest A&F UniversityYangling 712100China State Key Laboratory of Grassland Agro-ecosystems Key Laboratory of Grassland Livestock Industry InnovationMinistry of Agriculture and Rural AffairsEngineering Research Center of Grassland IndustryMinistry of EducationCollege of Pastoral Agriculture Science and TechnologyLanzhou UniversityLanzhou 730020China State Key Laboratory of Sheep Genetic Improvement and Healthy Production Xinjiang Academy of Agricultural and Reclamation SciencesShihezi 832000China Faculty of Animal Science and Technology Yunan Agricultural UniversityKunming 650201China Key Laboratory of Genetics Breeding and Reproduction of Grass feeding Livestock Ministry of AgricultureAnimal Biotechnology Research InstituteXinjiang Academy of Animal ScienceUrumqi 830026China State Key Laboratory of Molecular Developmental Biology Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China

The Y chromosome plays key roles in male fertility and reflects the evolutionary history of paternal ***,we present a de novo genome assembly of the Hu sheep with the first draft assembly of ovine Y chromosome(o MSY),using nanopore sequencing and Hi-C *** o MSY that we generated spans 10.6 Mb from which 775 Y-SNPs were identified by applying a large panel of whole genome sequences from worldwide sheep and wild Iranian *** major paternal lineages(HY1a,HY1b and HY2)were defined across domestic sheep,of which HY2 was newly ***,HY2 forms a monophyletic clade with the Iranian mouflons and is highly divergent from both HY1a and *** analysis of Y chromosomes,mitochondrial and nuclear genomes confirmed that HY2 and the maternal counterpart of lineage C represented a distinct wild mouflon population in Iran that diverge from the direct ancestor of domestic sheep,the wild mouflons in Southeastern *** results suggest that wild Iranian mouflons had introgressed into domestic sheep and thereby introduced this Iranian mouflon specific lineage carrying HY2 to both East Asian and Africa sheep populations.

关键词： Y chromosome sheep paternal lineage introgression de novo assembly

粮食主产区农业用水绿色效率区域差异及影响因素研究

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节水灌溉 2023年第6期 19-26页

作者：杨兴洪堵朵贵州大学经济学院贵阳550025

探究农业用水绿色效率的区域差异及影响因素,为农业水资源可持续利用、推进农业绿色转型提供决策参考。采用SE-SBM模型测度2006-2020年粮食主产区13省份的农业用水绿色效率水平,在此基础上通过Dagum基尼系数考察区域差异及来源,并运用... 详细信息

探究农业用水绿色效率的区域差异及影响因素,为农业水资源可持续利用、推进农业绿色转型提供决策参考。采用SE-SBM模型测度2006-2020年粮食主产区13省份的农业用水绿色效率水平,在此基础上通过Dagum基尼系数考察区域差异及来源,并运用面板数据模型检验其影响因素。研究发现:粮食主产区农业用水绿色效率整体呈现波动下降态势,多年均值为0.922,且不同流域具有鲜明的异质性特征;粮食主产区农业用水绿色效率空间非均衡性显著,区域差异贡献率呈现超变密度(47.760%)>区域内差异(32.097%)>区域间差异(20.043%),超变密度成为总体差异的主要来源;农业用水绿色效率受多因素共同影响,其中水资源禀赋、经济发展水平和农业对外开放对农业用水绿色效率存在显著正向影响,而产业结构、财政支农政策及有效灌溉水平的影响作用显著为负。粮食主产区各流域应根据资源禀赋与生产条件因地施策,探索农业水资源绿色高效利用的路径,推动农业用水绿色效率的区域协同发展。

关键词：农业用水绿色效率区域差异粮食主产区 SE-SBM模型 Dagum基尼系数

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基于粒子群优化的频域多信道干扰对齐算法

北京邮电大学学报 2016年第3期39卷 22-26页

作者：邹卫霞王多万杜光龙北京邮电大学泛网无线通信教育部重点实验室北京100876 东南大学毫米波国家重点实验室南京210096

针对频域干扰对齐系统解空间的多峰值特性,提出了一种基于粒子群优化,以系统网络和速率为优化目标函数的干扰对齐全局搜索算法.该算法通过对速度向量在位置向量的法平面上做投影以加强全局搜索能力,并在粒子群标准位置更新的基础上增加... 详细信息

针对频域干扰对齐系统解空间的多峰值特性,提出了一种基于粒子群优化,以系统网络和速率为优化目标函数的干扰对齐全局搜索算法.该算法通过对速度向量在位置向量的法平面上做投影以加强全局搜索能力,并在粒子群标准位置更新的基础上增加沿目标函数梯度方向的学习搜索来提高算法收敛速度和趋向全局最优值的能力.数值仿真结果表明,该算法可以获得比现有算法更好的网络和速率性能.

关键词：干扰对齐频域多信道自由度粒子群优化梯度网络和速率

Frequent RNF43 mutation contributes to moderate activation of Wnt signaling in colorectal signet-ring cell carcinoma

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Protein & Cell 2020年第4期11卷 292-298页

作者： Yaqi Li Jian Li Renjie Wang Long Zhang Guoxiang Fu Xueying Wang Yebin Wang Chuantao Fang Dandan Zhang duo du Xiaoji Ma Mengxue Pan Qiang Guo Xiaoya Xu Xiang Hu Yi Zhou Shaobo Mo Huijun Wang Jianjun Gao Shenglin Huang Yun Liu Sanjun Cai Guoqiang Hua Junjie Peng Fa-Xing Yu Department of Colorectal Surgery Fudan University Shanghai Cancer CenterShanghai 200032China Department of Oncology Shanghai Medical CollegeFudan UniversityShanghai 200032China Institute of Pediatrics Children's Hospital of Fudan UniversityShanghai 200032China Key Laboratory of Medical Epigenetics and Metabolism Institutes of Biomedical SciencesFudan UniversityShanghai 200032China Cancer Institute Fudan University Shanghai Cancer CenterFudan UniversityShanghai 200032China Institute of Radiation Medicine Fudan UniversityShanghai 200032China MOE Key Laboratory of Metabolism and Molecular Medicine Department of Biochemistry and Molecular BiologySchool of Basic Medical SciencesFudan UniversityShanghai 200032China Fudan University Shanghai Cancer Center and Institutes of Biomedical Sciences Shanghai Medical CollegeFudan UniversityShanghai 200032China Institute of Radiation Medicine and Fudan University Shanghai Cancer Center Shanghai Medical schoolFudan UniversityShanghai 200032China

Dear Editor,Signet-ring cell carcinoma(SRCC)is a rare subtype of colorectal cancer(CRC)characterized histologically by the accumulation of mucins in the cytoplasm and displacement of nuclei to the cellular periphery,accounting for about 1%CRC(Fig.S1A)(Borger et al.,2007).Compare to common subtypes of CRC,such as adenocarcinoma(AC)and mucinous adenocarcinoma(MAC),SRCC is associated with aggressive behaviors and younger age at presentation(Kang et al.,2005;Sung et al.,2008;Nitsche et al.,2013;Hugen et al.,2014;Inamura et al.,2015).A retrospective analysis of CRC patient's data at Fudan University Shanghai Cancer Center(FUSCC)also indicated a worse overall and disease-free survival of SRCC patients(Fig.S1B and S1C,Table S1).

关键词： al. colorectal adenocarcinoma

Recent Advances in Fibrous Materials for Hydroelectricity Generation

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Nano-Micro Letters 2025年第2期17卷 109-133页

作者： Can Ge duo Xu Xiao Feng Xing Yang Zheheng Song Yuhang Song Jingyu Chen Yingcun Liu Chong Gao Yong du Zhe Sun Weilin Xu Jian Fang College of Textile and Clothing Engineering Soochow UniversitySuzhou 215123People’s Republic of China National Engineering Laboratory for Modern Silk Soochow UniversitySuzhou 215123People’s Republic of China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan 430200People’s Republic of China Institute of Functional Nano&Soft Materials(FUNSOM) Soochow UniversitySuzhou 215123People’s Republic of China Department of Electrical and Computer Engineering University of MassachusettsAmherstMA 01003USA Department of Materials Imperial College LondonSouth Kensington CampusLondon SW72AZUK College of Textile Science and Engineering Zhejiang Sci-Tech UniversityHangzhou 310018People’s Republic of China School of Materials Science and Engineering Shanghai Institute of Technology100 Haiquan RoadShanghai 201418People’s Republic of China

Depleting fossil energy sources and conventional polluting power generation pose a threat to sustainable *** generation from ubiquitous and spontaneous phase transitions between liquid and gaseous water has been considered a promising strategy for mitigating the energy *** materials with unique flexibility,processability,multifunctionality,and practicability have been widely applied for fibrous materials-based hydroelectricity generation(FHG).In this review,the power generation mechanisms,design principles,and electricity enhancement factors of FHG are first ***,the fabrication strategies and characteristics of varied constructions including 1D fiber,1D yarn,2D fabric,2D membrane,3D fibrous framework,and 3D fibrous gel are ***,the advanced functions of FHG during water harvesting,proton dissociation,ion separation,and charge accumulation processes are analyzed in ***,the potential applications including power supply,energy storage,electrical sensor,and information expression are also ***,some existing challenges are considered and prospects for future development are sincerely proposed.

关键词： Hydroelectricity Fibrous material Streaming potential Ion diffusion

正六棱型MoO_(3-x)微米柱光催化剂的制备及性能

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应用化学 2021年第1期38卷 92-98页

作者：唐飞杜多勤谭芸妃秦莉晓重庆大学化学化工学院重庆401331 重庆斯泰克瑞登梅尔材料技术有限公司重庆401221

首先采用低温水相合成法制备了正六棱型MoO_(3)微米柱,然后以抗坏血酸为还原剂一步还原法制备了一种表面氧空位可控的MoO_(3-x)光催化材料。MoO_(3-x)具有较窄的禁带宽度和较大的光吸收范围。以罗丹明B为模拟污染物的光催化降解实验表明... 详细信息

首先采用低温水相合成法制备了正六棱型MoO_(3)微米柱,然后以抗坏血酸为还原剂一步还原法制备了一种表面氧空位可控的MoO_(3-x)光催化材料。MoO_(3-x)具有较窄的禁带宽度和较大的光吸收范围。以罗丹明B为模拟污染物的光催化降解实验表明,随着氧空位的增加,MoO_(3-x)的催化活性明显增加。对于Mo^(5+)摩尔分数为20.1%的MoO2.799样品,降解90%的初始质量浓度为10 mg/L的罗丹明溶液只需要60 min。本研究为高性能半导体光催化材料的制备提供了一种新思路。

关键词： MoO_(3-x) 正六棱型MoO_(3)微米柱氧空位光催化

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叉流式新风换热器数值模拟

低温与超导 2019年第1期47卷 66-71页

作者：王晓波姬爱民刘东杜铎华北理工大学冶金与能源学院唐山063009

换热器是新风系统的核心部件,以某品牌新风换热器为模型,对该换热器进行数值模型,分析换热过程中换热和流动特性,以及流速、流道高度对换热性能的影响。建立不同流道高度时新风侧温差、压差、努塞尔数、阻力系数、综合传热性能因子随速... 详细信息

换热器是新风系统的核心部件,以某品牌新风换热器为模型,对该换热器进行数值模型,分析换热过程中换热和流动特性,以及流速、流道高度对换热性能的影响。建立不同流道高度时新风侧温差、压差、努塞尔数、阻力系数、综合传热性能因子随速度的变化关系。发现在换热器内存在"换热死区",随速度增加"换热死区"范围增大,在流速0.5m/s～1.6m/s、流道高度3mm～5mm范围内,增加流速可提高换热能力、减小阻力系数,但压降同样增加;相同速度时,提高流道高度不仅提高了换热性能,还减小了压降。

关键词：新风换热器传热数值模拟双流道

Hydrothermal Etching of Barium Titanate Nanocubes

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Hydrothermal Etching of Barium Titanate Nanocubes

第15届全国晶体生长与材料学术会议

作者： Shubin Qin, duo Liu, Guojun du, Feifei Zheng, Zhiyuan Zuo, Hong Liu State Key Laboratory of Crystal Materials, Shandong University, 27 South Shanda Road, Jinan, Shandong 250100, P. R. China

We report here the hydrothermal etching process of BaTiO3 nanocubes in highly acidic solution. Orientation dependent etching and dislocation assisted etching behaviors are discussed. The preferential etching which induces interesting structures such as nanosized cavities is investigated. The etching experiments indicate that BaTiO3 nanocubes can be totally dissolved in the acidic hydrothermal environment. The final etching product is spindled titania which can be formed during the etching process through phase transition. A mechanism is discussed to account for the chemical etching of BaTiO3 nanocubes, that the etching process is mainly controlled by thermodynamic stability of well defined crystal facets and defect structures in the nanocubes.

关键词：

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基于三种算法的瓜子壳热解动力学分析

生物质化学工程 2021年第5期55卷 30-34页

作者：李若晗姬爱民杜铎华北理工大学冶金与能源学院河北唐山063200 唐山市环境规划科学研究院河北唐山063000

采用热失重法研究瓜子壳在氮气气氛中的热解过程,结果显示:瓜子壳在50℃/min的升温速率下主要热失重区间为167~427℃,最大失重速率发生在354.42℃,达42.9%/min。将瓜子壳参与反应的物质分为伪纤维素、伪半纤维素和伪木质素,假设瓜子壳... 详细信息

采用热失重法研究瓜子壳在氮气气氛中的热解过程,结果显示:瓜子壳在50℃/min的升温速率下主要热失重区间为167~427℃,最大失重速率发生在354.42℃,达42.9%/min。将瓜子壳参与反应的物质分为伪纤维素、伪半纤维素和伪木质素,假设瓜子壳在热解过程中由3个独立互不影响的平行反应而成,分别运用遗传算法(GA)、非线性最小二乘法(NLS)、高斯拟合-遗传算法(GGA)建立瓜子壳热解动力学模型,对瓜子外壳在热解过程中的动力学参数求解。结果表明:GGA算法性能最优,模拟DTG曲线与实验数据偏离度最小,仅为1.12%;与GA相比,其迭代次数少且计算稳定;与NLS相比,其计算快、对初始值要求不高。

关键词：热重实验平行反应算法模型