检索结果-南通市图书馆

Origin and evolution of a new tetraploid mangrove species in an intertidal zone

在线全文

学校读者我要写书评

暂无评论

Plant Diversity 2024年第4期46卷 476-490页

作者： Hui Feng Achyut Kumar Banerjee Wuxia Guo Yang Yuan Fuyuan Duan Wei lun ng Xuming Zhao Yuting liu Chunmei li Ying liu linfeng li Yelin Huang State Key laboratory of Biocontrol and Guangdong Provincial Key laboratory of Plant Resources School of Life SciencesSun Yat-sen UniversityGuangzhou 510275GuangdongChina Department of Bioengineering Zhuhai Campus of Zunyi Medical UniversityZhuhai 519041GuangdongChina China-ASEAN College of Marine Sciences Xiamen University MalaysiaSepang 43900SelangorMalaysia School of Agriculture Sun Yat-sen UniversityShenzhen 518107GuangdongChina School of Ecology Sun Yat-sen UniversityShenzhen 518107GuangdongChina

Polyploidy is a major factor in the evolution of plants,yet we know little about the origin and evolution of polyploidy in intertidal *** study aimed to identify the evolutionary transitions in three truemangrove species of the genus Acanthus distributed in the Indo-West Pacific *** this purpose,we took an integrative approach that combined data on morphology,cytology,climatic niche,phylogeny,and biogeography of 493 samples from 42 geographic *** results show that the Acanthus ilicifolius lineage distributed east of the Thai-Malay Peninsula possesses a tetraploid karyotype,which is morphologically distinct from that of the lineage on the west *** haplotype networks and phylogenetic trees for the chloroplast genome and eight nuclear genes reveal that the tetraploid species has two sub-genomes,one each from *** and ***,the paternal and maternal parents,*** structure analysis also supports the hybrid speciation history of the new tetraploid *** two sub-genomes of the tetraploid species diverged from their diploid progenitors during the *** niche models revealed that the tetraploid species not only occupied the near-entire niche space of the diploids,but also expanded into novel *** findings suggest that *** species distributed on the east side of the Thai-Malay Peninsula should be regarded as a new species,***,which originated from hybridization between *** and ***,followed by chromosome *** is the first report of a true-mangrove allopolyploid species that can reproduce sexually and clonally reproduction,which explains the long-term adaptive potential of the species.

关键词： Acanthus Allopolyploid Biogeography Evolution Hybridization Polyploidy

low-rank matrix recovery with total generalized variation for defending adversarial examples

在线全文

学校读者我要写书评

暂无评论

Frontiers of Information Technology & Electronic Engineering 2024年第3期25卷 432-445页

作者： Wen lI Hengyou WAng lianzhi HUO Qiang HE linlin CHEN Zhiquan HE Wing W.Y.ng School of Science Beijing University of Civil Engineering and ArchitectureBeijing 100044China School of Computer Science and Engineering South China University of TechnologyGuangzhou 510006China Aerospace Information Research Institute Chinese Academy of SciencesBeijing 100094China Guangdong Key laboratory of Intelligent Information Processing Shenzhen 518060China Institute of Big Data Modeling and Technology Beijing University of Civil Engineering and ArchitectureBeijing 100044China

low-rank matrix decomposition with first-order total variation(TV)regularization exhibits excellent performance in exploration of image *** advantage of its excellent performance in image denoising,we apply it to improve the robustness of deep neural ***,although TV regularization can improve the robustness of the model,it reduces the accuracy of normal samples due to its *** our work,we develop a new low-rank matrix recovery model,called lRTGV,which incorporates total generalized variation(TGV)regularization into the reweighted low-rank matrix recovery *** the proposed model,TGV is used to better reconstruct texture information without *** reweighted nuclear norm and li-norm can enhance the global structure ***,the proposed lRTGV can destroy the structure of adversarial noise while re-enhancing the global structure and local texture of the *** solve the challenging optimal model issue,we propose an algorithm based on the alternating direction method of *** results show that the proposed algorithm has a certain defense capability against black-box attacks,and outperforms state-of-the-art low-rank matrix recovery methods in image restoration.

关键词： Total generalized variation low-rank matrix Alternating direction method of multipliers Adversarial example

Cardiovascular health awareness,risk perception,behavioural intention and INTERHEART risk stratification among middle-aged adults in Malaysia

在线全文

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Medicine 2024年第2期17卷 61-70页

作者： Siew-Keah lee Ang-lim Chua Clement Heng Yew Fong Ban Hao Brian Cong Wen ling ng Jing Feng Kong Yik-ling Chew Kai Bin liew Yang Shao M.Kandiah Faculty of Medicine and Health Sciences Universiti Tunku Abdul RahmanMalaysia Faculty of Medicine Universiti Teknologi MARAMalaysia Faculty of Pharmaceutical Sciences UCSI UniversityMalaysia Faculty of Pharmacy University of CyberjayaMalaysia The First Affiliated Hospital of Hainan Medical University China

Objective:To investigate the interrelationship between cardiovascular health awareness,risk perception,behavioural intention,and INTERHEART risk stratification in a middle-aged adult population in ***:A cross-sectional survey with convenience sampling was conducted during November 2022 and January *** completed validated questionnaires assessing cardiovascular health awareness,risk perception of cardiovascular diseases,behavioural intention towards adopting healthy habits,and INTERHEART risk stratification score(IHRS)based on established risk factors.A total of 602 respondents were included in the final *** were analysed with independent t-test/one-way ANOVA or Mann-Whitney/Kruskal-Wallis to test the differences,Pearson correlation or linear regression test to analyze the association of independent and dependent ***:There was a significant positive correlation between medical knowledge related to cardiovascular disease(CVD)and knowledge related to CVD risk prevention,risk perception,behavioural intention and IHRS(Plation).Notably,individuals with higher IHRS tended to have lower knowledge related to CVD and CVD risk prevention,risk perception,and behavioural ***,laborers,active/former smokers,individuals with lower household income and educational levels,those involved in occupations not related to the healthcare sector,and those who did not receive the CVD health brochure or are unaware of health self-assessment tools are likely to have lower levels of knowledge,risk perception,and poorer behavioural intention regarding cardiovascular health(Ple educational level,smoking status,awareness about CVD poster,self-assessment tools were repeatedly significantly associated with knowledge related to CVD and CVD risk prevention,risk perception,behavioral intention and/or IHRS(Plinear regression).Conclusions:These findings underscore the importance of promoting car

关键词： Cardiovascular risk Knowledge Risk perception Behavioural intention INTERHEART Middle-aged lifestyle Physical activity Psychosocial stress

Treating acute low back pain with acupuncture:A randomized controlled study protocol to compare the effectiveness between distal and local acupoints

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Traditional Chinese Medical Sciences 2024年第3期11卷 351-356页

作者： Singleung Chan Shukyan lam Sinyin Ho Wanyi Au Poyi lin Waiming Chan Taking Yu Shungchi Tam Bacon F.l.ng linda l.D.Zhong Pok Oi Hospital Hong Kong Baptist University Chinese Medicine Clinic Cum Training and Research CentreHong Kong 999077China Chinese Medicine Department Hong Kong Hospital AuthorityHong Kong 999077China School of Chinese Medicine Hong Kong Baptist UniversityHong Kong 999077China School of Biological Sciences Nanyang Technological University637551Singapore

Objective To compare the efficacy of using“distal acupoints only”vs.“local acupoints mainly combined with distal acupoints”in cases of acute low back pain(AlBP).Methods A total of 102 eligible patients aged 18–65 years with AlBP lasting less than 6 weeks will be randomized in a 1:1 ratio to the distal acupoints only group(DPOG)and the local acupoints mainly combined with the distal acupoints group(lPMG).During a 4-week treatment period,patients in the DPOG will receive acupuncture at distal acupoints only(Houxi[SI 3]and Yaotongxue[EX-UE 7])twice a week,while those in the lPMG group will receive acupuncture at local acupoints(mainly Shenshu[Bl 23]and Dachangshu[Bl 25])combined with distal points(Weizhong[Bl 40]).The patients in both groups will be evaluated at every session of treatment,and the follow-up will be performed for 3 *** primary outcome measure will be the change in AlBP intensity,assessed using visual analogue scale scores before and after *** secondary outcome measure will be the evaluation of functional disability using the Oswestry Disability *** This study compares the DPOG and lPMG to explore the feasibility of the DPOG in the treatment of AlBP.

关键词： Acupuncture Acute low back pain Motion style acupuncture Activating qi acupuncture Distal acupoints local acupoints

不同年龄功能性语音障碍儿童的辅音语音错误特征研究

在线全文

学校读者我要写书评

暂无评论

听力学及言语疾病杂志 2024年第5期32卷 417-421页

作者：彭静吴民华邹密杨硕谭洁中南大学湘雅三医院康复医学科长沙410013 香港大学教育学院中国湖南中医药大学

目的研究不同年龄功能性语音障碍儿童(speech sound disorders,SSD)的语音障碍严重程度是否存在区别,并探讨其辅音语音错误特征。方法以2019年7月~2022年11月于中南大学湘雅三医院康复医学科就诊的172例SSD患儿为研究对象,其中4岁97例(... 详细信息

目的研究不同年龄功能性语音障碍儿童(speech sound disorders,SSD)的语音障碍严重程度是否存在区别,并探讨其辅音语音错误特征。方法以2019年7月~2022年11月于中南大学湘雅三医院康复医学科就诊的172例SSD患儿为研究对象,其中4岁97例(男63例,女34例),5岁45例(男36例,女9例),6岁30例(男22例,女8例)。以图片命名法对单词水平进行语音评估,记录辅音的语音错误类型,并计算辅音正确百分比(percentage consonants correct,PCC)和不同构音方式辅音(塞音化、塞擦音化、摩擦音化、鼻音化以及边音化)的错误比例。结果①三组间PCC差异无统计学意义(P>0.05);②三组间省略错误存在显著差异(Z=6.531,P=0.0380.05);③三组儿童省略错误中均以边音/l/省略为主;④三组儿童均存在较多的塞音化、塞擦音化和摩擦音化,但三组不同构音方式(塞音化、鼻音化、塞擦音化、摩擦音化和边音化)的辅音错误占比无差异(P>0.05)。结论不同年龄SSD儿童的语音障碍严重程度无明显差别,但省略错误分布存在明显差异,构音方式存在相似的语音错误特征。

关键词：功能性语音障碍辅音语音错误辅音正确百分比省略错误

同方期刊数据库

An update on hormonal regulation of early embryo-fallopian tube interactions: insights for improvements of assisted reproductive technology outcomes

在线全文

学校读者我要写书评

暂无评论

Reproductive and Developmental Medicine 2024年第1期8卷 39-49页

作者： Suranga P.Kodithuwakku Ernest H.Y.ng William S.B.Yeung Kai-Fai lee Department of Obstetrics and Gynaecology LKS Faculty of MedicineThe University of Hong KongHong Kong SAR 999077China Department of Animal Science Faculty of AgricultureUniversity of PeradeniyaPeradeniya 20400Sri Lanka Shenzhen Key laboratory of Fertility Regulation.The University of Hong Kong-Shenzhen Hospital Shenzhen 518053China

Human fallopian tubes(FTs)play important roles in the whole reproductive *** are the site for the final maturation of gametes,fertilization,transport of preimplantation embryos,and early embryonic development before entering the *** these functions are critical in the establishment of a successful *** the embryo is in transit through the FT,the FT microenvironment changes through endocrine,paracrine,autocrine,and juxtacrine mechanisms which involve various hormones and bioactive substances mainly from the neighboring ***,the interactions between the embryo and the FT may be the earliest embryo-maternal communications that are essential for the establishment of *** review critically discusses the evidence of various hormonal and bioactive mediated control of the microenvironment in the FTs during the earliest embryo-maternal ***,we highlight existing gaps in the knowledge and the importance of exploring more of the physiology of FTs which will hold the key to producing high-quality embryos for patients seekingin vitro fertilization(IVF)treatments.

关键词： Fallopian tube Embryo Maternal-embryo communication Hormonal control

在线全文

学校读者我要写书评

暂无评论

基于TTC染色的水稻种子活力定量分析

种子 2024年第10期 135-141页

作者：乔菊香冯明春杨晓洪 Hoàng Minh Tú 王世敏刘艳芳云南省农业科学院质量标准与检测技术研究所农业农村部植物新品种测试(昆明)分中心昭通学院农学与生命科学学院越南国家植物种子和农产品检测中心

为了揭示种子活力与TTC染色之间的定量关系，本研究以水稻种子CY-150为试验材料，经人工加速老化处理和TTC染色后，利用体视镜获取种子胚部纵切面的RGB图像，并用农业农村部植物新品种测试（昆明）分中心建立的图像分析软件分析图像的CI... 详细信息

为了揭示种子活力与TTC染色之间的定量关系，本研究以水稻种子CY-150为试验材料，经人工加速老化处理和TTC染色后，利用体视镜获取种子胚部纵切面的RGB图像，并用农业农村部植物新品种测试（昆明）分中心建立的图像分析软件分析图像的CIElab值，计算单位面积染色强度。结果表明，发芽率、TTC染色率和活力指数之间呈显著正相关。其中，发芽率和活力指数、发芽率和染色率、染色率和活力指数之间的相关系数分别为0.997 6、0.971 8和0.963 1。此外，CIElab值与发芽率、染色率和活力指数之间显著相关，其中，l*和a*分别呈负相关和正相关，相关系数分别为-0.974 9、-0.976 1、-0.972 1、0.973 7、0.991 5和0.967 8。利用种子活力指数与CIElab值建立了种子活力方程。通过随机选取4个水稻品种对方程进行验证，结果显示，4个品种的活力指数真实值略高于预测值。研究表明，TTC染色不仅可用于水稻种子活力快速定性分析，而且通过种胚RGB图像可以实现种子活力的定量分析，为进一步普及水稻种子活力快速检测提供参考。

关键词：水稻种子活力 TTC染色定量分析

The Consistency of lSE Estimators in Partial linear Regression Models under Mixing Random Errors

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2024年第5期40卷 1244-1272页

作者： Yun Bao YAO Yu Tan lÜ Chao lU Wei WAng Xue Jun WAng School of Mathematical Sciences Anhui UniversityHefei 230601P.R.China School of Big Data and Artificial Intelligence Chizhou UniversityChizhou 247000P.R.China School of Big Data and Statistics Anhui UniversityHefei 230601P.R.China

In this paper,we consider the partial linear regression model y_(i)=x_(i)β^(*)+g(ti)+ε_(i),i=1,2,...,n,where(x_(i),ti)are known fixed design points,g(·)is an unknown function,andβ^(*)is an unknown parameter to be estimated,random errorsε_(i)are(α,β)-mix_(i)ng random *** p-th(p>1)mean consistency,strong consistency and complete consistency for least squares estimators ofβ^(*)and g(·)are investigated under some mild *** addition,a numerical simulation is carried out to study the finite sample performance of the theoretical ***,a real data analysis is provided to further verify the effect of the model.

关键词： (α,β)-mixing random variables partial linear regression model least squares estimator consistency

RATIONAl GENERAl SOlUTIONS OF HIGHER ORDER AlGEBRAIC ODES

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Science & Complexity 2013年第2期26卷 261-280页

作者： HUAng Yanli ng l X Chu WINKlER Franz School of Computer Science and Software Engineering Tianjin Polytechnic University Research Institute for Symbolic Computation(RISC) Johannes Kepler University Department of Mathematics Quy Nhon University

This paper generalizes the method of ng6 and Winkler （2010, 2011） for finding rational general solutions of a first order non-autonomous algebraic ordinary differential equation （AODE） to the case of a higher order AODE, provided a proper parametrization of its solution hypersurface. The authors reduce the problem of finding the rational general solution of a higher order AODE to finding the rational general solution of an associated system. The rational general solutions of the original AODE and its associated system are in computable 1-1 correspondence. The authors give necessary and sufficient conditions for the associated system to have a rational solution based on proper reparametrization of invariant algebraic space curves. The authors also relate invariant space curves to first integrals and characterize rationally solvable systems by rational first integrals.

关键词： Algebraic ODE associated system invariant algebraic space curve rational first integral rational general solution.