检索结果-南通市图书馆

Citrus Pan-Genome to Breeding Database(CPBD):A comprehensive genome database for citrus breeding

在线全文

学校读者我要写书评

暂无评论

Molecular Plant 2022年第10期15卷 1503-1505页

作者： Hanmingzi Liu Xia Wang Shengjun Liu Yue Huang Yi-Xiong Guo Wen-Zhao Xie Hao Liu Muhammad Tahir ul qamar Qiang Xu Ling-Ling Chen College of Informatics Huazhong Agricultural UniversityWuhan 430070China Key Laboratory of Horticultural Plant Biology of Ministry of Education Huazhong Agricultural UniversityWuhan 430070China State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources College of Life Science and TechnologyGuangxi UniversityNanning 530004China Hubei Hongshan Laboratory Wuhan 430070China

Dear Editor,The genus Citrus comprises more than 30 species worldwide(Swingle,1943).However,citrus genetics and traditional breeding are hindered due to asexual reproduction,long generation time,and empirical utilization of the *** whole-genome information of different citrus species accelerates the genetic studies and improves the breeding efficiency by high-density markers.

关键词： breeding citrus Citrus

Molecular hallmarks of long non-coding RNAs in aging and its significant effect on aging-associated diseases

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

Neural Regeneration Research 2023年第5期18卷 959-968页

作者： Syed Aoun Mehmood Sherazi Asim Abbasi Abdullah Jamil Mohammad Uzair Ayesha Ikram Shanzay qamar Adediji Ayomide Olamide Muhammad Arshad Peter J.Fried Milos Ljubisavljevic Ran Wang Shahid Bashir Department of Biological Sciences Faculty of Basic&Applied SciencesInternational Islamic UniversityIslamabadPakistan Department of Biological Sciences University of ArkansasFayettevilleARUSA Department of Pharmacology Government College UniversityFaisalabadPakistan Department of Bioinformatics and Biotechnology Government College UniversityFaisalabadPakistan Department of Chemistry Chulalongkorn UniversityThailand Department of Neurology Berenson-Allen Center for Noninvasive Brain Stimulation and Division of Cognitive NeurologyBeth Israel Deaconess Medical Center(KS 158)Harvard Medical SchoolBostonMAUSA Department of Physiology College of Medicine and Health SciencesUnited Arab Emirates UniversityAl AinUnited Arab Emirates Department of Psychiatry The First Hospital of Hebei Medical UniversityShijiazhuangHebei ProvinceChina Mental Health Institute of Hebei Medical University ShijiazhuangHebei ProvinceChina Neuroscience Center King Fahad Specialist HospitalDammamSaudi Arabia

Aging is linked to the deterioration of many physical and cognitive abilities and is the leading risk factor for Alzheimer’s disease. The growing aging population is a significant healthcare problem globally that researchers must investigate to better understand the underlying aging processes. Advances in microarrays and sequencing techniques have resulted in deeper analyses of diverse essential genomes(e.g., mouse, human, and rat) and their corresponding cell types, their organ-specific transcriptomes, and the tissue involved in aging. Traditional gene controllers such as DNA-and RNA-binding proteins significantly influence such programs, causing the need to sort out long non-coding RNAs, a new class of powerful gene regulatory elements. However, their functional significance in the aging process and senescence has yet to be investigated and identified. Several recent researchers have associated the initiation and development of senescence and aging in mammals with several well-reported and novel long non-coding RNAs. In this review article, we identified and analyzed the evolving functions of long non-coding RNAs in cellular processes, including cellular senescence, aging, and age-related pathogenesis, which are the major hallmarks of long non-coding RNAs in aging.

关键词： aging Alzheimer’s disease DNA sequence epigenetics immune non-coding RNA oligonucleotides telomere-associated

IPv6 Cryptographically Generated Address:Analysis,Optimization and Protection

在线全文

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2021年第7期68卷 247-265页

作者： Amjed Sid Ahmed Rosilah Hassan Faizan qamar Mazhar Malik Department of Computing and Information Technology Global College of Engineering and TechnologyRuwi112Sultanate of Oman Faculty of Information Science and Technology Center for Cyber SecurityUniversiti Kebangsaan MalaysiaBangi43600Malaysia Faculty of Information Science and Technology Universiti Kebangsaan Malaysia43600BangiMalaysia

In networking,one major difficulty that nodes suffer from is the need for their addresses to be generated and verified without relying on a third party or public authorized *** resolve this issue,the use of selfcertifying addresses have become a highly popular and standardized method,of which Cryptographically Generated Addresses(CGA)is a prime *** was primarily designed to deter the theft of IPv6 addresses by binding the generated address to a public key to prove address *** though the CGA technique is highly effective,this method is still subject to several vulnerabilities with respect to security,in addition to certain limitations in its *** this study,the authors present an intensive systematic review of the literature to explore the technical specifications of CGA,its challenges,and existing proposals to enhance the *** that CGA generation is a time-consuming process,this limitation has hampered the application of CGA in mobile environments where nodes have limited energy and *** Hash2 conditions in CGA is the heaviest and most timeconsuming part of *** improve the performance of CGA,we replaced the Secure Hash Algorithm(SHA1)with the Message Digest(MD5)hash ***,this study also analyzes the possible methods through which a CGA could be *** conducting this analysis,Denial-of-Service(DoS)attacks were identified as the main method of attack toward the CGA verification process,which compromise and threaten the privacy of ***,we propose some modifications to the CGA standard verification algorithm to mitigate DoS attacks and to make CGA more security conscious.

关键词： IPv6 GCA SEND DoS attacks RSA SHA-1

In-situ copolymerization of aniline with alkyl amine by APS:Kinetics and application

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

Chinese Chemical Letters 2008年第11期19卷 1358-1362页

作者： M.Rashid Shams qamar Usmani Suhail Sabir Polymer Research Laboratory Department of ChemistryAligarh Muslim UniversityAligarh 202002India

The kinetic study of in-situ eopolymerization of aniline with o- and p-methylaniline by ammonium persulfate （APS） has been carried out. UV-vis spectroscopic method was used to investigate the course of copolymerization. Structural characterization was studied by PT-IR spectral analysis. The electronic spectra of the copolymers poly（aniline-co-p-toluidine） and poly（aniline-co-o- toluidine） show blue shift. The shift has been observed in the bands corresponding to π→π^＊ transition as well as in the exciton transition. The increase in absorbance recorded during the reaction for different concentration of aniline, o- and p-toluidine at various intervals of time of polymerization reaction indicates a growth in the polymer formation. The resulting first-order rate constant was used to calculate the rate of copolymer formation using the rate equation -d[A]/dt = kc^n.

关键词： Copolymerization Corrosion inhibition Electronic and vibrational spectra

Qualitative properties and bifurcations of discrete-time Bazykin–Berezovskaya predator–prey model

在线全文

学校读者我要写书评

暂无评论

International Journal of Biomathematics 2020年第6期13卷 23-51页

作者： A.A.Elsadany qamar Din S.M.Salman Department of Mathematics College of Science and Humanities in Al-Kharj Prince Sattam bin Abdulaziz University Al-Kharj 11942Saudi Arabia Department of Basic Science Faculty of Computers and Informatics IsmailiaSuez Canal UniversityEgypt Department of Mathematics The University of Poonch Rawalakot Hawalakot 12350Pakistan Department of Mathematics Faculty of EducationAlexandria University AlexandriaEgypt

The positive connection between the total individual fitness and population density is called the demographic Allee effect.A demographic Allee effect with a critical population size or density is strong Allee *** this paper,discrete counterpart of Bazykin–Berezovskaya predator–prey model is introduced with strong Allee *** steady states of the model,the existence and local stability are ***,proposed discrete-time Bazykin–Berezovskaya predator–prey is obtained via implementation of piecewise constant method for differential *** model is compared with its continuous counterpart by applying higher-order implicit Runge–Kutta method(IRK)with very small step *** comparison yields that discrete-time model has sensitive dependence on initial *** implementing center manifold theorem and bifurcation theory,we derive the conditions under which the discrete-time model exhibits flip and Niemark–Sacker ***,numerical simulations are provided to validate the theoretical results.

关键词： Bazykin-Berezovskaya model period-doubling bifurcation Niemark-Sacker bifurcation transcritical bifurcation Chaotic dynamics

Genome editing opens a new era of genetic improvement in polyploid crops

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

The Crop Journal 2019年第2期7卷 141-150页

作者： qamar U.Zaman Chao Li Hongtao Cheng Qiong Hu Oil Crops Research Institute Chinese Academy of Agricultural Sciences/Key Laboratory of Biology and Genetic Improvement of Oil CropsMinistry of Agriculture Graduate School of Chinese Academy of Agricultural Sciences

Sequence-specific nucleases(SSN) that generate double-stranded DNA breaks(DSBs) in genes of interest are the key to site-specific genome editing in plants. Genome editing has developed into one method of reducing undesirable traits in crops by the induction of knockout mutations. Different SSN-mediated genome-editing systems, including LAGLIDADG homing endonucleases or meganucleases, zinc-finger nucleases, transcription activator-like effector nucleases and clustered regularly interspaced short palindromic repeats, are emerging as robust tools for introducing functional mutations in polyploid crops including citrus, wheat, cotton, soybean, rapeseed, potato, grapes, Camelina sativa,dandelion, and tobacco. The approach utilizes knowledge of biological mechanisms for targeted induction of DSBs and their error-prone repair, allowing highly specific changes at designated genome loci. In this review, we briefly describe genome-editing technologies and their application to genetic improvement of polyploid crops.

关键词： Genome editing CRISPR Site-specific mutagenesis Polyploid Crop improvement

Length-weight relationship of eleven species of marine catfishes from the northern Arabian Sea coast of Pakistan

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Oceanology and Limnology 2017年第5期35卷 1218-1220页

作者： Noureen FAROOQ Nazia qamar Shahnaz RASHID Sher Khan PANHWAR Center of Excellence in Marine Biology University of Karachi Sindh Pakistan

This study records length-weight relationships(LWRs)for eleven commercially important marine catfi sh species of the family Ariidae(sea catfi shes)and Plotosidae(eel catfi shes)from the northern Arabian Sea coast of *** specimens were sampled from December 2014 to November 2015,using bottom trawls with various mesh sizes by commercial *** species were Nemapteryx caelatus,Sciades sona,Arius gagora,Batrachocephalus mino,Netuma thalassina,***,Osteogeneiosus militaris,Plicofollis dussumieri,***,Plotosus limbatus,and *** the eleven species,two species *** and *** were recorded for the fi rst time and LWRs for four species ***,***,***,and *** still have no data in the Fish Base *** addition,new maximum length for each of the three species ***,*** and B.m ino was also found.

关键词：海岸海洋阿拉伯海巴基斯坦鲶鱼体重轻水反应堆体长商业价值

Hot corrosion of surface-modified Sm_(2)Co_(17) high-temperature magnet with Ni and Ni/Cr bilayer coatings in 75 wt% Na_(2)SO_(4)–NaCl mixture

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2021年第9期40卷 2494-2500页

作者： Saira Bibi Jing-Min Wang Tariq Mehmood Waheed qamar Khan Cheng-Bao Jiang Key Laboratory of Aerospace Materials and Performance(Ministry of Education) School of Materials Science and EngineeringBeihang UniversityBeijing 100191China Institute of Advanced Materials Bahauddin Zakariya UniversityMultan 60800Pakistan School of Space and Environment Beihang UniversityBeijing 100191China

Hot corrosion behavior of Sm_(2)(Co, Fe, Cu,Zr)17-type high-temperature magnetic alloy without and with a protective coating of Ni and Ni/Cr bilayer at 500 ℃ in a corrosive mixture of 75 wt% Na_(2)SO_(4)–NaCl for 100 h was reported in this paper. The obtained results of timedependent weight change established the parabolic growth of oxidized surface of bare magnets(8.87 mg·cm^(-2)),which caused a rapid loss of magnetic properties measured both at room and high temperatures(500 ℃). X-ray diffraction(XRD) analysis revealed the growth of oxides for bare magnet and Cr–oxides(Cr_(2) O_(3)), top layer of Ni/Cr bilayer coating, but in the case of single coating, Ni–sulfides formation indicated penetration of sulfur, which is further verified by electron probe microanalysis with energy dispersive spectroscopy(EPMA/EDS) *** showed that bilayer-coated samples(Ni/Cr) performed better than Ni-coated and bare samples.

关键词： Hot corrosion SmCo-based alloys Oxidation Coatings

Global transmission diagrams for evanescent waves in a nonlinear hyperbolic metamaterial

在线全文

学校读者我要写书评

暂无评论

Chinese Optics Letters 2015年第9期13卷 1-5页

作者： Munazza Zulfiqar Ali Ashfaq Ahmad Bhatti qamar ul Haque Shahzad Mahmood Physics Department Punjab University Theoretical Physics Division PINSTECH

A theoretical model of a nonlinear hyperbolic metamaterial is presented in the form of a stack of subwavelength layers of linear plasmonic and nonlinear dielectric materials. A broad picture of the properties of evanescent waves （high-k modes） in this stack is investigated by plotting global transmission diagrams. The presence of nonlinearity strongly modifies these diagrams. The emergence and modification of nonlinear evanescent waves is observed. Some signatures of nonlinear phenomenon such as formation of orbits and trajectories around fixed points are also seen in our work.

关键词： Global transmission diagrams for evanescent waves in a nonlinear hyperbolic metamaterial