检索结果-南通市图书馆

Transcriptome and genome analysis to identify C2H2 genes participating in low-temperature conditioning-alleviated postharvest chilling injury of peach fruit

在线全文

学校读者我要写书评

暂无评论

Food Quality and Safety 2022年第4期6卷 500-509页

作者： Yaqin Zheng Zhenning liu Hui Wang Wenna Zhang shuaijie li Meng Xu College of Agriculture and Forestry Sciences Linyi UniversityLinyiChina Shandong(linyi)Institute of Modern Agriculture Zhejiang UniversityLinyiChina

Objectives:This work intended to identify candidate C2H2 genes participating in low-temperature conditioning(LTC)-alleviated postharvest chilling injury of peach *** and Methods:For LTC treatment,fruit were pre-stored at 10℃for 5 d and then transferred to 0℃*** firmness was measured by a hardness tester.H_(2)O_(2)content was determined by luminosity measurement model using a multifunctional enzyme *** of C2H2 family members was performed by HMMSCAN according to peach *** cis-acting element of gene promoters was analyzed using the Plant CARE *** gene coexpression network analysis(WGCNA)was performed by the WGCNA package in the BMK Cloud ***:LTC treatment decreased flesh browning rate and H_(2)O_(2)production of‘Beijing No.9’*** factor identification of differentially expressed genes in 0℃and the LTC treatment indicated that peach C2H2 participated in the regulation of chilling injury.A total of 47 C2H2 genes were identified based on peach ***-time quantitative polymerase chain reaction(qRT-PCR),phylogenetic analysis and promoter cis-acting element analysis revealed that ZFP21 was involved in the regulation of LTC-alleviated chilling injury in *** and dual luciferase assay suggested that ZFP21 participated in LTC-alleviated chilling injury by downregulating the expression of reactive oxygen species-related genes ***:Our investigation,based on genome and RNA-seq,revealed that ZFP21 was involved in LTC treatment-alleviated chilling injury of peach *** work is useful for the identification of peach cold tolerance-related genes and the study of C2H2 family in peach.

关键词： Peach fruit low-temperature conditioning chilling injury C2H2 cold storage

Potential of octant degeneracy resolution in JUNO

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics C 2019年第3期43卷 17-21页

作者： M.V.Smirnov Zhoujun Hu shuaijie li Jiajie ling Department of physics Sun Yat-Sen UniversityGuangzhou 510275China

This work extends the idea of using a cyclotron-based antineutrino source for purposes of neutrino *** baseline experiments suffer from degeneracies and correlations between Θ_(23), δ_(CP) and the mass ***, the combination of a superconducting cyclotron and a big liquid scintillator detector like JUNO in a medium baseline experiment, which does not depend on the mass hierarchy, may allow to determine whether the position of the mixing angle Θ_(23) is in the lower octant or the upper octant. Such an experiment would improve the precision of the Θ_(23) measurement to a degree which depends on the CP-phase.

关键词： neutrino oscillations octant mixing angle JUNO

在线全文

学校读者我要写书评

暂无评论

自催化邻苯二甲腈树脂的研究进展

中国胶粘剂 2024年第7期33卷 13-21页

作者：李帅杰刘彩召孙明明张绪刚李坚辉张斌黑龙江省科学院石油化学研究院黑龙江哈尔滨150040

邻苯二甲腈树脂是一类具有优异综合性能的热固性树脂,在航空航天、船舶制造、电子封装等使用环境苛刻的领域中有着广泛的应用需求。然而邻苯二甲腈树脂本身固化非常缓慢,设计合成自催化邻苯二甲腈树脂分子结构是一种有效的解决方式。本... 详细信息

邻苯二甲腈树脂是一类具有优异综合性能的热固性树脂,在航空航天、船舶制造、电子封装等使用环境苛刻的领域中有着广泛的应用需求。然而邻苯二甲腈树脂本身固化非常缓慢,设计合成自催化邻苯二甲腈树脂分子结构是一种有效的解决方式。本文将自催化邻苯二甲腈归纳为酚羟基、氨基、仲胺、席夫碱、咪唑、苯并噁嗪、烷烃、马来酰亚胺和自由基等九大类,分别综述了不同类型树脂近几年的研究进展情况,并对自催化邻苯二甲腈树脂今后的发展趋势进行了展望。

关键词：自催化邻苯二甲腈树脂分子结构固化机理

Measurement of solar pp neutrino flux using electron recoil data from PandaX-4T commissioning run

在线全文

学校读者我要写书评

暂无评论

CHINESE PHYSICS C 2024年第9期48卷 1-7,300页

作者： Lu, Xiaoying Abdukerim, Abdusalam Bo, Zihao Chen, Wei Chen, Xun Chen, Yunhua Cheng, Chen Cheng, Zhaokan Cui, Xiangyi Fan, Yingjie Fang, Deqing Geng, lisheng Giboni, Karl Guo, Xuyuan Han, Chencheng Han, Ke He, Changda He, Jinrong Huang, Di Huang, Junting Huang, Zhou Hou, Ruquan Hou, Yu Ji, Xiangdong Ju, Yonglin li, Chenxiang li, Jiafu li, Mingchuan li, shuaijie li, Tao lin, Qing liu, Jianglai Lu, Congcong Luo, lingyin Luo, Yunyang Ma, Wenbo Ma, Yugang Mao, Yajun Meng, Yue Ning, Xuyang Pang, Binyu Qi, Ningchun Qian, Zhicheng Ren, Xiangxiang Shaheed, Nasir Shang, Xiaofeng Shao, Xiyuan Shen, Guofang Shen, Manbin Si, lin Tao, Yi Wang, Anqing Wang, Meng Wang, Qiuhong Wang, Shaobo Wang, Siguang Wang, Wei Wang, Xiuli Wang, Xu Wang, Zhou Wei, Yuehuan Wu, Mengmeng Wu, Weihao Wu, Yuan Xiao, Mengjiao Xiao, Xiang Xiong, Kaizhi Yan, Binbin Yan, Xiyu Yang, Yong Yuan, Ying Yuan, Zhe Yun, Youhui Zeng, Xinning Zhang, Minzhen Zhang, Peng Zhang, Shibo Zhang, Shu Zhang, Tao Zhang, Wei Zhang, Yang Zhang, Yingxin Zhang, Yuanyuan Zhao, li Zhou, Jifang Zhou, Ning Zhou, Xiaopeng Zhou, Yubo Zhou, Zhizhen Shandong Univ Inst Frontier & Interdisciplinary Sci Res Ctr Particle Sci & Technol Qingdao 266237 Peoples R China Shandong Univ Key Lab Particle Phys & Particle Irradiat Minist Educ Qingdao 266237 Peoples R China Shanghai Jiao Tong Univ Sch Phys & Astron Shanghai Key Lab Particle Phys & Cosmol Key Lab Particle Astrophys & Cosmol MOE Shanghai 200240 Peoples R China Shanghai Jiao Tong Univ Tsung Dao Lee Inst New Cornerstone Sci Lab Shanghai 200240 Peoples R China Shanghai Jiao Tong Univ Sichuan Res Inst Chengdu 610213 Peoples R China Jinping Deep Underground Frontier Sci & Dark Matt Liangshan 615000 Peoples R China Yalong River Hydropower Dev Co Ltd 288 Shuanglin Rd Chengdu 610051 Peoples R China Shanghai Jiao Tong Univ SJTU Paris Elite Inst Technol Shanghai 200240 Peoples R China Shanghai Jiao Tong Univ Sch Mech Engn Shanghai 200240 Peoples R China Sun Yat Sen Univ Sch Phys Guangzhou 510275 Peoples R China Sun Yat Sen Univ Sino French Inst Nucl Engn & Technol Zhuhai 519082 Peoples R China Yantai Univ Dept Phys Yantai 264005 Peoples R China Fudan Univ Inst Modern Phys Key Lab Nucl Phys & Ion Beam Applicat MoE Shanghai 200433 Peoples R China Beihang Univ Sch Phys Beijing 102206 Peoples R China Beihang Univ Beijing Key Lab Adv Nucl Mat & Phys Beijing 102206 Peoples R China Beihang Univ Peng Huanwu Collaborat Ctr Res & Educ Beijing 100191 Peoples R China Chinese Acad Sci Inst Modern Phys Southern Ctr Nucl Sci Theory SCNT Huizhou 516000 Peoples R China Univ Maryland Dept Phys College Pk MD 20742 USA Univ Sci & Technol China State Key Lab Particle Detect & Elect Hefei 230026 Peoples R China Univ Sci & Technol China Dept Modern Phys Hefei 230026 Peoples R China Peking Univ Sch Phys Beijing 100871 Peoples R China Nankai Univ Sch Phys Tianjin 300071 Peoples R China Sun Yat Sen Univ Sch Phys & Astron Zhuhai 519082 Peoples R China

The proton-proton (pp) fusion chain dominates the neutrino production in the Sun. The uncertainty of the predicted pp neutrino flux is at the sub-percent level, whereas that of the best measurement is O(10%). In this study, for the first time, we measure solar pp neutrinos in the electron recoil energy range from 24 to 144 keV using the PandaX-4T commissioning data with 0.63 tonne x year exposure. The pp neutrino flux is determined as, (8.0 +/- 3.9 (stat) +/- 10.0 (syst) x 10(10) s(-1) cm(-2) which is consistent with the Standard Solar Model and existing measurements, corresponding to an upper flux limit of 23.3 x 10(10) at 90% C.L..

关键词： solar pp neutrino flux PandaX-4T electron recoil spectrum GENERATION

Research on Leading Edge Erosion and Aerodynamic Characteristics of Wind Turbine Blade Airfoil

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Fluid Dynamics & Materials Processing 2024年第9期20卷 2045-2058页

作者： Xin Guan Yuqi Xie shuaijie Wang Mingyang li Shiwei Wu School of New Energy Shenyang Institute of EngineeringShenyang110136China

The effects of the erosion present on the leading edge of a wind turbine airfoil(DU 96-W-180)on its aerodynamic performances have been investigated numerically in the framework of a SST k–ωturbulence model based on the Reynolds Averaged Navier-Stokes equations(RANS).The results indicate that when sand-induced holes and small pits are involved as leading edge wear features,they have a minimal influence on the lift and drag coefficients of the ***,if delamination occurs in the same airfoil region,it significantly impacts the lift and resistance characteristics of the ***,as the angle of attack grows,there is a significant decrease in the lift coefficient accompanied by a sharp increase in the drag *** wear intensifies,these effects gradually ***,the leading edge wear can exacerbate flow separation near the trailing edge suction surface of the airfoil and cause forward displacement of the separation point.

关键词： Wind energy wind turbine erosion airfoil leading edge erosion characteristics aerodynamic performance numerical simulation

穴居植物湖南报春苣苔大小孢子发生及雌雄配子体发育研究

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国野生植物资源 2024年第4期43卷 39-44页

作者：陈灵灵李帅杰邹雅吴尧晶许海霞蔡秀珍湖南师范大学生命科学学院湖南长沙410081 中国科学院武汉植物园湖北武汉430074 长沙市北雅中学湖南长沙410008 怀化师范高等专科学校湖南怀化418000

目的:湖南报春苣苔(Primulina hunanensis)为我国特有的极具观赏价值的岩溶洞穴野生植物,具耐荫、耐贫瘠等特性,但其自然分布范围狭窄、野生种群规模小。胚胎发育是植物生活史中的关键环节,研究湖南报春苣苔的胚胎发育特征,为苦苣苔科(G... 详细信息

目的:湖南报春苣苔(Primulina hunanensis)为我国特有的极具观赏价值的岩溶洞穴野生植物,具耐荫、耐贫瘠等特性,但其自然分布范围狭窄、野生种群规模小。胚胎发育是植物生活史中的关键环节,研究湖南报春苣苔的胚胎发育特征,为苦苣苔科(Gesneriaceae)植物的栽培育种提供新思路。方法:以湖南报春苣苔为材料,运用经典石蜡切片技术,对大、小孢子发生及雌、雄配子体发育过程进行解剖学观察。结果:湖南报春苣苔花药4室,花药壁由外到内依次为表皮、药室内壁、中层和腺质型绒毡层;小孢子母细胞减数分裂时的胞质分裂为同时型,四分体偶为交叉(十字)形,多为四面体形,花粉为二细胞型;倒生胚珠,单珠被,薄珠心,胚囊发育方式为蓼型。湖南报春苣苔花粉粒发育不同步,存在花粉败育、雌雄配子体异熟现象。结论:研究为报春苣苔属(Primulina)植物积累了基础的胚胎学资料,对于揭示苦苣苔科植物生殖机制及改良植物繁殖育种方式具有重要意义。

关键词：湖南报春苣苔大孢子发生小孢子发生雌配子体雄配子体

Spontaneous immunomodulation and regulation of angiogenesis and osteogenesis by Sr/Cu-borosilicate glass (BSG) bone cement to repair critical bone defects

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

生物活性材料(英文) 2023年第5期23卷 101-117页

作者： shuaijie li liyan Zhang Chunyu liu Jua Kim Kun Su Tingli Chen limin Zhao Xiaomei Lu Hao Zhang Yinglin Cui Xu Cui Feng Yuan Haobo Pan Department of Orthopedics Tongji HospitalSchool of MedicineTongji UniversityShanghai200065China Center for Human Tissues and Organs Degeneration Shenzhen Institute of Advanced TechnologyChinese Academy of ScienceShenzhen518055China Key Laboratory of Industrial Fermentation Microbiology of the Ministry of Education and Tianjin College of BiotechnologyTianjin University of Science and Technology300457China Shenzhen Longhua District Central Hospital/the Affiliated Central Hospital of Shenzhen Longhua District Guangdong Medical UniversityShenzhen518110China Department of Orthopedics Shanxi Bethune HospitalTaiyuan030032China Shenzhen Key Laboratory of Marine Biomaterials Shenzhen Institute of Advanced TechnologyChinese Academy of ScienceShenzhen518055China

Injectable bone biomaterials like bone cement should be designed and fabricated with certain biological criteria,which include:1)recruitment and polarization of the macrophages from M1(pro-inflammatory)to M2(anti-inflammatory)phenotype,2)enhance vascularization,and 3)activate osteogenic differentiation of bone marrow-derived stem cells to promote bone *** far,no injectable biomaterials could spontaneously regulate the entire bone healing process that involves inflammation,angiogenesis,and ***,in this study,we designed bone cement comprised of strontium and copper-incorporated borosilicate glass(Sr/Cu-BSG)in the liquid phase of chitosan to modulate bone *** vitro studies showed that the controlled release of Sr and Cu ions up-regulated anti-inflammatory genes(IL-1Ra and TGF-β1)while down-regulating pro-inflammatory genes(IL-1βand IL-6)in macrophages at 3 *** and Cu ions also increased the expressions of angiogenic genes(VEGF and bFGF)in HUVECs at 5 days and osteogenic genes(Runx-2,OCN,and OPN)in hBMSCs at 7,14,and 21 days.5Sr3Cu-BSG bone cement exhibited the best anti-inflammatory,angiogenic,and osteogenic properties among the bone cement groups with different Sr and Cu ***-term and long-term implantation of Sr/Cu-BSGs in femoral condylar bone defects of rats and rabbits confirmed the in vitro results,where the degradation rate of Sr/Cu-BSG matched the bone healing *** to in vitro,the 5Sr3Cu-BSG group also showed the highest bone formation in *** physical and chemical properties,along with its bone repairing ability,make the Sr/Cu-BSG bone cement a good candidate biomaterial for treating bone defects.

关键词： Borosilicate glass bone cement Immunomodulation Angiogenesis Osteogenesis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

湖南报春苣苔的花部特征及其繁育系统研究

园艺学报 2020年第3期47卷 492-502页

作者：李帅杰蔡秀珍湖南师范大学生命科学学院长沙410081

为揭示湖南报春苣苔(Primulina hunanensis)花部特征和繁育系统对有性繁殖过程的影响,合理开发利用其野生种质资源,对其开花物候、花部特征以及访花昆虫类型进行了野外定点观测,测量和分析了花粉活力及柱头可授性、花粉胚珠比值、杂交指... 详细信息

为揭示湖南报春苣苔(Primulina hunanensis)花部特征和繁育系统对有性繁殖过程的影响,合理开发利用其野生种质资源,对其开花物候、花部特征以及访花昆虫类型进行了野外定点观测,测量和分析了花粉活力及柱头可授性、花粉胚珠比值、杂交指数,并结合人工辅助授粉试验对其繁育系统进行了检测。结果表明,(1)湖南报春苣苔花期在5-7月,长约40 d,单花周期3~8 d;雌雄异熟,开放当天花粉活力最强(>90%),柱头无活性;雌雄异位,开放后雄蕊几乎不再生长,而雌蕊继续伸长。(2)花粉胚珠比值为518.36,杂交指数为5,繁育系统以异交为主,部分自交亲和,需要传粉者;去雄不授粉套袋结实率为0,不存在无融合生殖。(3)开花期间存在多种传粉者,熊蜂与其花部特征相适应,为最有效传粉者。(4)自然状态下结实率较高;存在无性繁殖,作为生殖补偿机制维持种群的数量。

关键词：湖南报春苣苔传粉生物学繁育系统花部特征熊蜂

在线全文

学校读者我要写书评

暂无评论

基于自适应TV_p正则化图像恢复方法

中山大学学报（自然科学版） 2016年第5期55卷 8-13页

作者：李率杰冯兆永河南科技大学数学与统计学院河南洛阳471023 中山大学数学学院广东广州510275

为了解决图像恢复时所引起的阶梯效应和边缘模糊问题,定义可变TV_p范数,提出一个自适应TV_p(Adaptive TV_p,ATV_p)正则恢复模型,并结合AOS数值计算方法,给出完整的ATV_p正则恢复算法,其中p可以自动区分图像中的边缘和平坦区域,自适应选... 详细信息

为了解决图像恢复时所引起的阶梯效应和边缘模糊问题,定义可变TV_p范数,提出一个自适应TV_p(Adaptive TV_p,ATV_p)正则恢复模型,并结合AOS数值计算方法,给出完整的ATV_p正则恢复算法,其中p可以自动区分图像中的边缘和平坦区域,自适应选择不同的数值,使得新模型在恢复的同时不仅能够自适应的对图像中目标边缘进行有效的保护,而且可以避免出现阶梯效应。实验表明,和主要的一些正则模型相比,本恢复算法对模糊图像的恢复无论在视角效果还是定量指标上都有了明显的改进。

关键词：图像恢复 ATVp正则 AOS数值计算