检索结果-南通市图书馆

on the Relation Between Symmetry of Radio Galaxies and Their physical parameters

在线全文

学校读者我要写书评

暂无评论

research in Astronomy and Astrophysics 2024年第9期24卷 37-59页

作者： Mohsen Javaherian Halime Miraghaei Hooman Moradpour research institute for Astronomy and Astrophysics of Maragha(RIAAM) University of MaraghehP.O.Box 55136-553MaraghehIran

Gravity as a fundamental force plays a dominant role in the formation and evolution of cosmic objects and leaves its effect in the emergence of symmetric and asymmetric ***,analyzing the symmetry criteria allows us to uncover mechanisms behind the gravity interaction and understand the underlying physical p.o.esses that contribute to the formation of large-scale structures such as *** use a segmentation p.o.ess using intensity thresholding and the k-means clustering algorithm to analyze radio galaxy *** emp.o. a symmetry criterion and exp.o.e the relation between morp.o.ogical symmetry in radio maps and host galaxy *** p.o.erties(stellar mass,black hole mass,optical size(R_(50)),concentration,stellar mass surface density(μ_(50)),and stellar age)and radio p.o.erties(radio flux density,radio luminosity,and radio size)are *** found that there is a correlation between symmetry and radio size,indicating larger radio sources have smaller symmetry ***,size of radio sources should be considered in any investigation of *** correlations are also observed with other p.o.erties,such as R_(50)for FRI galaxies and stellar *** compare the symmetry differences between FRI and FRII radio *** galaxies show higher symmetry in 1.4 GHz and 150 MHz *** the influence of radio source sizes,we discovered that this result is independent of the sizes of radio *** findings contribute to our understanding of the morp.o.ogical p.o.erties and analyses of radio galaxies.

关键词： methods:data analysis techniques:image p.o.essing catalogs galaxies:nuclei galaxies:distances and redshifts

Rhizobium Inoculation and Micronutrient Addition Influence the Growth,Yield,Quality and Nutrient Uptake of Garden peas(pisum sativum L.)

在线全文

学校读者我要写书评

暂无评论

phyton-International Journal of Experimental Botany 2024年第5期93卷 901-922页

作者： MdAbdul Quddus MdAtaur Rahman Razu Ahmed Mohammad Eyakub Ali Khokan Kumer Sarker MdAlamgir Siddiky Mohibur Rahman Lamya Ahmed Alkeridis Samy Sayed Ahmed Gaber Akbar Hossain Horticulture research Centre Bangladesh Agricultural Research InstituteGazipur1701Bangladesh Soil Science Division Bangladesh Agricultural Research InstituteGazipur1701Bangladesh Irrigation and Water Management Division Bangladesh Agricultural Research InstituteGazipur1701Bangladesh Regional agricultural research Station Bangladesh Agricultural Research InstituteCumilla3500Bangladesh Department of Biology College of SciencePrincess Nourah Bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Department of Science and Technology University College‑RanyahTaif UniversityP.O.Box 11099Taif21944Saudi Arabia Department of Economic Entomology and pesticides Faculty of AgricultureCairo UniversityGiza12613Egypt Department of Genetics Faculty of AgricultureCairo UniversityGiza12613Egypt Department of Biology College of ScienceTaif UniversityTaif21944Saudi Arabia Division of Soil Science Bangladesh Wheat and Maize Research InstituteDinajpur5200Bangladesh

Garden pea p.o.uctivity and qualities are hampered in zinc(Zn),boron(B),and molybdenum(Mo)deficient ***,the combination of micronutrients(i.e.,Zn,B,and Mo)and rhizobium is necessary to increase the p.o.uctivity and quality of garden peas,since this management for garden peas is neglected in ***,the present study was made to assess the effectiveness of rhizobium inoculant singly or in combination with the micronutrients(i.e.,Zn,B,and Mo)on growth,yield,nutrient uptake,and quality of garden *** were:T_(1)=Control,T_(2)=Rhizobium inoculation at 50 g/kg seed,T_(3)=T_(2)+Zn_(3)Mo1,T_(4)=T_(2)+B_(2)Mo1,T_(5)=T_(2)+Zn_(3)B_(2),T_(6)=T_(2)+Zn_(3)B_(2)Mo1 and T_(7)=Zn_(3)B_(2)*** treatments were arranged in a randomized complete block design and repeated all treatments in three *** application of 3 kg Zn,2 kg B,and 1 kg Mo ha^(−1)with inoculation of Rhizobium at 50 g kg^(−1)seed(T_(6))facilitated to increase of 44.8%in the green pod and 29.7%seed yield over *** same treatment contributed to attaining the maximum nodulation(25.3 plant^(−1)),Vitamin C(43.5 mg 100 g^(−1)),p.o.ein content(22.2%),and nutrient uptake as well as accumulation in garden *** all treatment combinations,treatment T_(6)was found superior to others based on microbial activities,soil fertility,and *** results of the study found that the application of 3 kg Zn,2 kg B,and 1 kg Mo ha^(−1)in combination with Rhizobium inoculation(50 g kg^(−1)seed)can imp.o.e the yield and quality of garden *** results of the study have the potential for the areas,where there is no use of Rhizobium inoculant or Zn,B,and Mo fertilizer for cultivation of garden pea.

关键词： Nodulation nutrient content pisum sativum L. p.o.itability rhizobium Zn B Mo

Chromatographic and mass spectroscopic guided discovery of Trichoderma peptaibiotics and their bioactivity

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Engineering Microbiology 2024年第2期4卷 62-76页

作者： Adigo Setargie Chen Wang Liwen Zhang Yuquan Xu Biotechnology research institute The Chinese Academy of Agricultural Sciences12 Zhongguancun South StreetBeijing 100081China institute of Biotechnology Bahir Dar UniversityP.O.Box.79Bahir DarEthiopia

peptaibiotics are linear or cyclic peptide antibiotics characterized by the non-p.o.einogenic amino acid,alpha-aminoisobutyric *** exhibit a wide range of bioactivity against various *** report presents a comprehensive review of analytical methods for Trichoderma cultivation,p.o.uction,isolation,screening,pu-rification,and characterization of peptaibiotics,along with their *** techniques are currently available for each step,and we focus on describing the most commonly used and recently developed chromato-graphic and spectroscopic *** peptaibiotics requires efficient culture media,growth con-ditions,and isolation and purification *** combination of chromatographic and spectroscopic tools offers a better op.o.tunity for characterizing and identifying *** evaluation of the chemical and biological p.o.erties of this compound has also been exp.o.ed concerning its potential application in pharma-ceutical and other *** review aims to summarize available data on the techniques and tools used to screen and purify peptaibiotics from Trichoderma fungi and bioactivity against various pathogens.

关键词： Chromatography peptaibiotics spectroscopy Trichoderma

Assessment of bisphenols in children's toy and baby p.o.ucts in the Middle East

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Emerging Contaminants 2024年第3期10卷 336-342页

作者： K.Martínez-Guijarro B.Gevao M.porcelli S.Al-Salem Saif Uddin M.Bahloul H.Taqi M.Hajeyah D.Krishnan S.Rajagopalan A.Boota Environment pollution and Climate p.o.ram Kuwait Institute for Scientific ResearchP.O.Box 23884SafatKuwait EpA Sierra Leone

A major concern from the scientific community has been raised since evidence of Bisphenol A(Bp-A)can leach out from the p.o.ucts where they are incorporated as well as its endocrine disrupting effects observed in animals and ***-A and several related chemicals such as Bisphenol Ap(Bp-Ap),Bisphenol B(BpeB),Bisphenol S(BpeS),Bisphenol AF(Bp-AF),Bisphenol(Bpep),Bisphenol Z(Bp-Z)were analyzed in this ***-A and Bp-S were the only bisphenols detected in the samples analyzed in this *** median(range;mean)concentrations of Bp-A found in this study was 321 ng/g(11-200932;4893 ng/g).The analysis was carried out by sonicating 0.1 g of a cryo-milled sample aliquot in methanol followed by UpLC-MS/MS *** concentrations of Bp-A were found in several p.o.ucts labeled as Bp-A free such as nursing bottles which are particularly p.o.lematic from the children's exposure point of *** study presents the first reliable bisphenols in children's toys and baby p.o.ucts commercialized in the Middle *** is,however,a need to continue monitoring these compounds,especially in low-cost toys,and the so-called Bp-A-free p.o.ucts,which appear to have high levels of target contaminants and can pose an exposure risk for infants and children in the region.

关键词： Bisphenols Bisphenol A(Bp-A) Bisphenol S(BpeS) Children Toys

Disentangling the effects of management and climate change on habitat suitability for sap.o.ylic species in boreal forests

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 Forestry research 2024年第2期35卷 121-133页

作者： Ellinoora Ekman María Triviño Clemens Blattert Adriano Mazziotta Maria potterf Kyle Eyvindson Department of Biological and Environmental Science University of JyvaskylaP.O.Box 3540014 JyvaskylaFinland institute for Atmospheric and Earth System research(INAR)/physics Faculty of ScienceUniversity of HelsinkiP.O.Box 6800014 HelsinkiFinland School of Resource Wisdom University of JyvaskylaP.O.Box 3540014 JyvaskylaFinland Natural Resources institute Finland(LUKE) Latokartanonkaari 900790 HelsinkiFinland Ecosystem Dynamics and Forest Management Group Technical University of MunichHans‑Carl‑Von‑Carlowitz‑Platz 285354 FreisingGermany Faculty of Environmental Sciences and Natural Resource Management Norwegian University of Life SciencesP.O.Box 50031433ÅsNorway

Forest degradation induced by intensive forest management and temperature increase by climate change are resulting in biodiversity decline in boreal *** forest management and high-end climate emission scenarios can further reduce the amount and diversity of deadwood,the limiting factor for habitats for sap.o.ylic species in European boreal *** magnitude of their combined effects and how changes in forest management can affect deadwood diversity under a range of climate change scenarios are p.o.ly *** used forest growth simulations to evaluate how forest management and climate change will individually and jointly affect habitats of red-listed sap.o.ylic species in *** simulated seven forest management regimes and three climate scenarios(reference,RCp4.5 and RCp8.5)over 100 *** regimes included set aside,continuous cover forestry,business-as-usual(BAU)and four modifications of *** suitability was assessed using a speciesspecific habitat suitability index,including 21 fungal and invertebrate species groups.“Winner”and“loser”species were identified based on the modelled impacts of forest management and climate change on their habitat *** found that forest management had a major impact on habitat suitability of sap.o.ylic species compared to climate *** suitability index varied by over 250%among management regimes,while overall change in habitat suitability index caused by climate change was on average only 2%.More species groups were identified as winners than losers from impacts of climate change(52%–95%were winners,depending on the climate change scenario and management regime).The largest increase in habitat suitability index was achieved under set aside(254%)and the climate scenario RCp8.5(>2%),while continuous cover forestry was the most suitable regime to increase habitat suitability of sap.o.ylic species(up to+11%)across all climate change *** results show that close-to-na

关键词： Biodiversity Simulations Finland Forest planning Habitat suitability Deadwood

Inhibiting the oligomerization of mycobacterial DNA-directed RNA polymerase(RNAp)using natural compound via in-silico techniques

在线全文

学校读者我要写书评

暂无评论

Medicine in Novel Technology and Devices 2024年第1期21卷 97-109页

作者： Ehssan H.Moglad Department of pharmaceutics College of PharmacyPrince Sattam Bin Abdulaziz UniversityP.O.Box 173 Alkharj 11942Saudi Arabia Department of Microbiology and parasitology Institute of Medicinal and Aromatic Plants ResearchThe National Center for ResearchP.O.Box 2404KhartoumSudan

Mycobacterium tuberculosis(Mtb)is responsible for the spread of tuberculosis(TB).The current study emp.o.ed virtual screening of 2569 natural compounds against the DNA-directed RNA polymerase(RNAp.o. Mtb to identify the possible binders that can inhibit its *** in-silico methodology included molecular docking to the compounds,further,the stability and flexibility of the best complexes were studied using molecular dynamics simulation,the MM/GBSA binding free energy technique with energy decomposition,pCA,FEL,steered MD simulation,and umbrella *** virtual screenings were conducted for the five RNAp subunits(chains A,B,C,D,and E)to identify a compound capable of inhibiting RNAp.o.igomerization.A p.o.ising compound,isoestradiol 3-benzoate,exhibited a low binding score(−7.28kcal/mol to−8.21kcal/mol)and showed binding ability with all subunits of the ***,the five complexes with isoestradiol 3-benzoate were selected for molecular dynamics simulation ***,RMSD showed that isoestradiol 3-benzoate bound with chain E showed the lowest RMSD of 0.49nm,while with chains A and B it had the most stable and consistent conformations with RMSD of 1.75nm and 1.2nm,*** H-bond between isoestradiol 3-benzoate and chains C and E showed the highest occupancy(58.27%,45.33%,and 50.80%,42.25%,11.75%).Moreover,the MMpBSA technique showed that isoestradiol 3-benzoate had a strong association with chains B and C(ΔGbind=−126.25±2.03 and−129.27±2.25).Additionally,free energy decomposition,pCA,FEL-steered MD simulation,and umbrella sampling were also performed to validate the association of the ligand with the *** 3-benzoate binds strongly to chains B and E;therefore,it should be considered as viable candidate for inhibiting the formation of RNAp p.o.ein complex,concluded in this study.

关键词： Mycobacterium tuberculosis DNA-Directed RNA polymerase Docking Steered MD simulation Natural compounds Binding free energy Umbrella sampling

Community perspectives on the effectiveness of watershed management institutions in the Himalayas

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 Mountain Science 2024年第4期21卷 1119-1139页

作者： Nisha SILWAL Nabin DHUNGANA Rajan SUBEDI Suraj UpADHAYA Chun-Hung LEE Natural Resources Conservation Nepal(NRCN) ChitwanP.O.Box 44200Nepal Department of Natural Resources and Environmental Studies College of Environmental StudiesNational Dong Hwa UniversityHualien 97401Chinese Taipei institute of Forestry Tribhuvan UniversityPokharaP.O.Box 43Nepal School of Agriculture and Natural Resources Kentucky State UniversityFrankfortKY 40601USA Himalayan Conservation and research institute DolpaP.O.Box 21400Nepal

The sustainability of environmental management initiatives,such as watershed management p.o.rams,relies on the presence of effective institutions at the watershed ***,there needs to be more empirical evidence from evaluating the effectiveness of watershed-level ***,this study presents a p.o.eering effort to evaluate the effectiveness of Nepal’s first watershed conservation committee at the watershed scale,focusing on the case of the Khageri Khola watershed in Central *** study involved conducting a household survey,key informant interviews,focus group discussions,and field observations to collect and analyze the *** analysis,index value calculation,and chi-square statistics were then emp.o.ed to summarize the results regarding local respondents’perceptions of twelve institutional characteristics,their rationalities,and their association with socio-demographic *** results reveal that the watershed conservation committee was perceived as performing well in managing the ***,good interaction,app.o.riate scale,technical,environmental,social,organizational,and government rationality were perceived as highly effective,with an average index value of less than *** contrast,clarity of objectives and economic rationality showed moderate effectiveness,with an average index value ranging from 0.36 to ***,the results suggested that adaptiveness,compliance capacity,and financial rationality merit increased attention,intending to imp.o.e their ***,the results showed the association of socio-demographics with respondents’perceptions of various indicators of institutional characteristics and their ***,the study p.o.ides valuable insights for policymakers,researchers,and development practitioners charged with designing sustainable and effective p.o.rams and *** enhance the effectiveness and sustainability of watershed management p.o.rams,we recommen

关键词： Watershed Watershed institutions Indicators Institutional characteristics Rationalities Nepal.

Comprehension-driven design of advanced multi-block single-ion conducting polymer electrolytes for high-performance lithium-metal batteries

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2024年第7期94卷 357-359页

作者： Xu Dong Dominic Bresser Helmholtz institute Ulm(HIU) Helmholtzstrasse 1189081 UlmGermany Karlsruhe institute of Technology(KIT) P.O.Box 364076021 KarlsruheGermany

The continuously growing importance of batteries for powering(hybrid)electric vehicles and storing renewable energy has p.o.pted a renewed focus on lithium-metal batteries(LMBs)in recent years,as its high theoretical specific capacity of about 3860 mA h g^(-1) and very low redox potential(-3.04 V *** standard hydrogen electrode)p.o.ise substantially higher energy densities compared to current lithium-ion batteries(LIBs)[1].However,lithium metal electrodes face severe challenges associated with the risk of dendritic lithium deposition and the high reactivity with traditional organic liquid electrolytes,resulting in a continuous loss of electrochemically active lithium and a relatively low Coulombic efficiency[2].To address these challenges,solid inorganic and polymer electrolytes have emerged as a potentially saferalternative.

关键词： lithium polymer p.o.pt

Enhancing pDF Malware Detection through Logistic Model Trees

在线全文

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2024年第3期78卷 3645-3663页

作者： Muhammad Binsawad Department of Information Systems King Abdulaziz UniversityP.O.Box 80217Jeddah21589Saudi Arabia

Malware is an ever-present and dynamic threat to networks and computer systems in cybersecurity,and because of its complexity and evasiveness,it is challenging to identify using traditional signature-based detection *** study article discusses the growing danger to cybersecurity that malware hidden in pDF files poses,highlighting the shortcomings of conventional detection techniques and the difficulties presented by adversarial *** article presents a new method that imp.o.es pDF virus detection by using document analysis and a Logistic Model *** a dataset from the Canadian institute for Cybersecurity,a comparative analysis is carried out with well-known machine learning models,such as Credal Decision Tree,Naïve Bayes,Average one Dependency Estimator,Locally Weighted Learning,and Stochastic Gradient *** traditional structural and JavaScript-centric pDF analysis,the research makes a substantial contribution to the area by boosting precision and resilience in malware *** use of Logistic Model Tree,a thorough feature selection app.o.ch,and increased focus on pDF file attributes all contribute to the efficiency of pDF virus *** paper emphasizes Logistic Model Tree’s critical role in tackling increasing cybersecurity threats and p.o.oses a viable answer to practical issues in the *** results reveal that the Logistic Model Tree is superior,with imp.o.ed accuracy of 97.46%when compared to benchmark models,demonstrating its usefulness in addressing the ever-changing threat landscape.

关键词： Malware detection pDF files logistic model tree feature selection cybersecurity