检索结果-南通市图书馆

Estimation of aerosol optical depth in relation to meteorological parameters over eastern and western routes of China Pakistan economic corridor

引用

Journal of Environmental Sciences 2021年第1期33卷 28-39页

作者： Bushra Khalid Ayesha Khalid Sidra Muslim Ammara Habib Kishwar khan Debora Souza Alvim Sehrish Shakoor Sonia Mustafa Sana Zaheer Momel Zoon azmat hayat khan Sana Ilyas Bin Chen Institute of Geographic Sciences and Natural Resources Research Beijing 100101China University of Chinese Academy of Sciences Beijing 100049 China Department of Enuironmental Science International Islamic UniversityIslamabadPakistan The Abdus Salam International Centre for Theoretical Physics TriesteItaly Institute of Atmospheric Physics Chinese Academy of SciencesBeijing 100029China Competition Commission of Pakistan IslamabadPakistan Center of Natural Sciences and Humanities Federal University of ABCSanto AndreSPBrazil Pakistan Meteorological Department IslamabadPakistan Collaborative Innouation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University ofInformation Science&TechnologyNanjing 210044China

This study finds out seasonal and monthly variations in Aerosol Optical Depth(AOD)over eastern and western routes of China Pakistan Economic Corridor(CPEC)and the relationship between AOD and meteorological parameters(i.e.,temperature,rainfall and wind speed).The Moderate Resolution Imaging Spectroradiometer(MODIS)and Multi-angle Imaging Spectroradiometer(MISR)data was used from the terra satellite for the period of *** study aims to overtake the conventional view of the purpose of using the satellite *** study takes on to the concept that validated satellite data sets rather should be used for the analysis instead of just validation specifically for our study ***,after comparing MODIS AOD with MISR AOD,only MISR AOD dataset is used for further *** results show a decreasing trend of AOD in summer season,a positive relationship between temperature and AOD during winter and spring seasons whereas a positive relationship between wind speed and AOD in winter and spring seasons over eastern and western *** analysis of MODIS AOD and MISR AOD depicts May-Aug as the peak period of aerosol concentration over central *** inter-annual analysis shows the aerosol trend remained higher during summer season however rainfall shows the washout *** route has higher standard deviation and larger values for aerosol prevalence as compared to western *** trajectory analysis using the HYSPLIT model suggests the bias of air mass trajectory caused deviation in the aerosol trend in the year 2014.

关键词： Aerosol optical depth China-Pakistan economic corridor Meteorology Pollution development Seasonal analysis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Characteristics of Central Southwest Asian Water Budgets and Their Impacts on Regional Climate

引用

Atmospheric and Climate Sciences 2013年第2期3卷 259-268页

作者： Khalid M. Malik Peter A. Taylor Kit Szeto azmat hayat khan Climate Research Division Environment Canada Gatineau Canada National Agromet Center Pakistan Meteorological Department Islamabad Pakistan National Drought Monitoring Center Pakistan Meteorological Department Islamabad Pakistan York University Toronto Canada

Water budgets terms, evapotranspiration (E), precipitation (P), runoff (N), moisture convergence (MC) and both surface as well as atmospheric residual terms have been computed with National Centers for Environmental Prediction (NCEP) (1948-2007) and European Centre for Medium-Range Weather Forecasts (ECMWF) ERA-40 (1958-2001) reanalysis data sets for Central Southwest Asia (CSWA).The domain of the study is 45° - 75°E & 25° - 40°N. Only the land area has been used in these calculations. It is noted in the comparison of both reanalysis data sets with Global Precipitation Climatology Centre (GPCC) that all three data sets record different precipitation before 1970. The maximum is from NCEP and the minimum with ERA-40. However, after 1970 all the data sets record almost the same precipitation. ERA-40 computes two phases of MC. Before 1975, the domain acts as a moisture source, whereas after 1975 it behaves as a moisture sink. The region CSWA is divided into six sub areas with rotational principle factor analysis and we distinguish them by different approached weather systems acting on each area. Finally, NCEP yearly precipitation is further divided into seasons;winter (November to April) and summer (May to October) and two phases have been noted. The variation in winter precipitation is more than summer during last 60-year analysis.

关键词： Water Budgets Drought over Central Southwest Asia Moisture Flux Convergence Principle Component Analysis Climate Change

来源：

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

LDH-based nanomaterials for photocatalytic applications:A comprehensive review on the role of bi/trivalent cations, anions,morphology, defect engineering, memory effect, and heterojunction formation

引用

Journal of Energy Chemistry 2023年第9期84卷 242-276页

作者： azmat Ali khan Muhammad Tahir Nazish khan Baluchistan University of Information Technology Engineering and Management Sciences(BUITEMS)P.O.Box 87100QuettaPakistan Chemical and Petroleum Engineering Department UAE UniversityP.O.Box 15551Al AinUnited Arab Emirates The University of Agriculture Swat P.O.Box 19040Pakistan

Using sunlight to drive chemical reactions via photocatalysis is paramount for a sustainable *** several photocatalysts,employing layered double hydrides(LDH) for photocatalytic application is most straightforward and desirable owing to their distinctive two-dimensional(2D) lamellar structure and optical *** article reviews the advancements in bimetallic/trimetallic LDHs and various strategies to achieve high efficiency toward an outstanding performing ***,the tuning of LDH components that control the electro nic and structural properties is *** tu ning obtained through the adoption,combination,and incorporation of different cations and anions is also *** progress of modification methods,such as the adoption of different morphologies,delamination,and defect engineering towards enhanced photocatalytic activities,is discussed in the *** band engineering,structural characteristics,and redox tuning are further deliberated to maximize solar energy harvesting for different photocatalytic ***,the progress obtained in forming hierarchical heterostructures through hybridization with other semiconductors or conducting materials is systematically disclosed to get maximum photocatalytic ***,the structural changes during the in-situ synthesis of LDH and the stability of LDH-based photocatalysts are *** review also summarizes the improvements in LDH properties obtained through modification tactics and discusses the prospects for future energy and environmental applications.

关键词： LDH Properties Potential photocatalyst Photocatalytic application Photocatalytic properties Improvement strategies

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Exploring the nano-fungicidal efficacy of green synthesized magnesium oxide nanoparticles(MgO NPs)on the development,physiology,and infection of carrot(Daucus carota L.)with Alternaria leaf blight(ALB):Molecular docking

引用

Journal of Integrative Agriculture 2023年第10期22卷 3069-3080页

作者： Lukman AHAMAD azmat ALI khan Masudulla khan Orudzhev FARID Mahboob ALAM Plant Pathology/Nematology Laboratory Department of BotanyAligarh Muslim UniversityAligarh 202002India Regional Plant Quarantine Station Salt LakeKolkata 700097India Pharmaceutical Biotechnology Laboratory Department of Pharmaceutical ChemistryCollege of PharmacyKing Saud UniversityRiyadh 11451Saudi Arabia Botany Section Women’s CollegeAligarh Muslim UniversityAligarh 202002India Amirkhanov Institute of Physics Dagestan Federal Scientific CenterRussian Academy of SciencesMakhachkala 367003Russia Department of Safety Engineering Dongguk UniversityGyeongju-si 780714Republic of Korea

In this research,green synthesized magnesium oxide nanoparticles(MgO NPs)from lemon fruit extracts and their fungicidal potential was evaluated against Alternaria dauci infection on carrot(Daucus carota L.)under greenhouse *** scanning and transmission electron microscopy(SEM and TEM)and ultra-violet(UV)visible spectroscopy were used to validate and characterize MgO *** crystalline nature of MgONPs was determined using selected area electron diffraction(SAED).MgO NPs triggered substantial antifungal activity against *** when exposed to 50 and 100 mg L^(–1)concentrations but the higher antifungal potential was noticed in 100 mg L^(–1)under invitro *** fungal inoculated plants,a marked decrease in growth,photosynthetic pigments,and an increase in phenol,proline contents,and defense-related enzymes of carrot were seen over control(distilled water).However,foliar application of MgO NPs at 50 and 100 mg L^(–1)resulted in significant improvement of plant growth,photosynthetic pigments,phenol and proline contents,and defense enzymes activity of carrots with and without *** *** of MgO NPs at 100 mg L^(–1)had more plant length(17.11%),shoot dry weight(34.38%),plant fresh weight(20.46%),and root dry weight(49.09%)in carrots when challenged with *** over inoculated *** leaf blight indices and percent disease severity were also reduced in *** inoculated plants when sprayed with MgO *** non-bonding interactions of Alternaria genus protein with nanoparticles were studied using molecular docking.

关键词： green synthesis MgO nanoparticles alternaria leaf blight photosynthetic pigments defense enzymes carrot

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Comprehensive screening and selection of okra (Abelmoschus esculentus) germplasm for salinity tolerance at the seedling stage and during plant ontogeny

引用

Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2012年第7期13卷 533-544页

作者： Ikram-ul-HAQ Asif Ali khan Iqrar Ahmad khan Muhammad Abubakkar azmat Department of Plant Breeding and Genetics University of AgricultureFaisalabadPakistan Institute of Horticultural Sciences University of AgricultureFaisalabadPakistan

The okra germplasm was screened for salinity tolerance at the seedling stage and during plant ontogeny. Substantial variation existed in okra for salinity tolerance at the seedling stage. An 80 mmol/L NaCI concentration was suitable for discriminating tolerant and non-tolerant okra genotypes. The pooled ranking of the genotypes, based on individual rankings for each trait （root and shoot length, germination percentage, and relative Na^＋ and K%＋） in individual NaCI concentrations, was effective for selecting tolerant genotypes. Genotypes selected at the seedling stage maintained their tolerance to NaCI during plant ontogeny, suggesting that screening of the germplasm entries and advanced breeding materials for salt tolerance at the seedling stage is effective. Among 39 okra genotypes, five were identified as the most tolerant genotypes and showed potential for use in breeding programs that focus on the development of salt-tolerant, high-yield okra cultivars.

关键词： Salinity tolerance Okra Growth stage Genetic variation Mechanism Potassium to sodium ion ratio (K^+/Na^+)

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Meteorological impacts on evapotranspiration in different climatic zones of Pakistan

引用

Journal of Arid Land 2017年第6期9卷 938-952页

作者： Shahzada ADNAN Kalim ULLAH azmat H khan GAO Shouting Department of Meteorology COMSATS Institute of Information Technology Islamabad 44000 Pakistan Pakistan Meteorological Department Islamabad 44000 Pakistan State key Laboratory of Cloud-Precipitation Physics and SevereStorms Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China

Arid regions are highly vulnerable and sensitive to drought. The crops cultivated in arid zones are at high risk due to the high evapotranspiration and water demands. This study analyzed the changes in seasonal and annual evapotranspiration（ET） during 1951–2016 at 50 meteorological stations located in the extremely arid, arid, and semi-arid zones of Pakistan using the Penman Monteith（PM） method. The results show that ET is highly sensitive and positively correlated to temperature, solar radiation, and wind speed whereas vapor pressure is negatively correlated to ET. The study also identifies the relationship of ET with the meteorological parameters in different climatic zones of Pakistan. The significant trend analysis of precipitation and temperature（maximum and minimum） are conducted at 95% confidence level to determine the behaviors of these parameters in the extremely arid, arid, and semi-arid zones. The mean annual precipitation and annual mean maximum temperature significantly increased by 0.828 mm/a and 0.014℃/a in the arid and extremely arid zones, respectively. The annual mean minimum temperature increased by 0.017℃/a in the extremely arid zone and 0.019℃/a in the arid zone, whereas a significant decrease of 0.007℃/a was observed in the semi-arid zone. This study provides probabilistic future scenarios that would be helpful for policy-makers, agriculturists to plan effective irrigation measures towards the sustainable development in Pakistan.

关键词： evapotranspiration meteorological parameters climatic zone Penman Monteith method Pakistan

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Recent advances in titanium carbide MXene-based nanotextures with influential effect of synthesis parameters for solar CO_(2)reduction and H_(2)production:A critical review

引用

Journal of Energy Chemistry 2023年第1期76卷 295-331,I0008页

作者： Muhammad Tahir azmat Ali khan Sehar Tasleem Rehan Mansoor Areen Sherryna Beenish Tahir Chemical and Petroleum Engineering Department UAE UniversityP.0.Box 15551Al AinUnited Arab Emirates Balochistan University of Information Technology Engineering and Management Sciences(BUITEMS)QuttaBalochistanPakistan Department of Chemical Engineering School of Chemical and Energy EngineeringUniversiti Teknologi Malaysia81310UTM.Johor BahruJohorMalaysia Civil and Environmental Engineering Department UAE UniversityP.o.Box 15551Al AinUnited Arab Emirates

Photocatalytic solar to energy conversion is considered an attractive approach for overcoming energy crises and environmental ***,titanium carbide(Ti_(3)C_(2))MXenes have been recognized as promising cocatalysts based on their metallic conductivity,excessive active reaction sites,and enlarged surface *** current review focuses on the properties and applications of Ti_(3)C_(2)MXenes useful in the field of *** specifically,surface modification of Ti_(3)C_(2)MXenes by varying synthesis parameters to get pure materials and also composites with the role of functional groups towards solar energy conversion applications is highlighted in this *** effect of etching and oxidizing pathways to get an efficient cocatalyst has been discussed in *** the significant effect of parameters,optimum synthesis conditions such as etchant type,concentration,time and type of intercalant in both the Ti_(3)C_(2)synthesis approaches for improved photoactivity are ***,the surface modification of Ti_(3)C_(2)through oxidation for TiO2growth on its surface is deliberated with a detailed discussion on etchant type,concentration,etching time,and environmental *** optimum oxidation condition,including temperature,time,and environment for thermal treatment of Ti_(3)C_(2),were also ***,the review summarizes the conclusion and future perspectives for solar energy conversion applications.

关键词： Solar to energy conversion Ti_(3)C_(2)nanomaterials Termination groups MXene cocatalyst Synthesis parameters

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Extraction of DNA suitable for PCR applications from mature leaves of Mangifera indica L.

引用

Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2012年第4期13卷 239-243页

作者： Muhammad Abubakkar azmat Iqrar Ahmad khan Hafiza Masooma Naseer CHEEMA Ishtiaq Ahmad RAJWANA Ahmad Sattar khan Asif Ali khan Centre of Agricultural Biochemistry and Biotechnology University of AgricultureFaisalabadPakistan Department of Plant Breeding and Genetics University of Agricul-tureFaisalabadPakistan University College of Agriculture Bahauddin Zakariya UniversityMultanPakistan Institute of Horticultural Sciences University of AgricultureFais-alabadPakistan

Good quality deoxyribonucleic acid （DNA） is the pre-requisite for its downstream applications. The presence of high concentrations of polysaccharides, polyphenols, proteins, and other secondary metabolites in mango leaves poses problem in getting good quality DNA fit for polymerase chain reaction （PCR） applications. The problem is exacerbated when DNA is extracted from mature mango leaves. A reliable and modified protocol based on the cetyl trimethylammonium bromide （CTAB） method for DNA extraction from mature mango leaves is described here. High concentrations of inert salt were used to remove polysaccharides; Polyvinylpyrrolidone （PVP） and 13-mercaptoethanol were employed to man＇age phenolic compounds. Extended chloroform-isoamyl alcohol treatment followed by RNase treatment yielded 950-1050 pg of good quality DNA, free of protein and RNA. The problems of DNA degradation,contamination, and low yield due to irreversible binding of phenolic compounds and coprecipitation of polysaccharides with DNA were avoided by this method, The DNA isolated by the modified method showed good PCR amplification using simple sequence repeat （SSR） primers, This modified protocol can also be used to extract DNA from other woody plants having similar problems.

关键词： Extraction buffer Mango Polyphenols DNA isolation Simple sequence repeat (SSR) Secondary metabotites

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

急性白血病病人化疗后的血液学及生化变化

引用

中国药理学报 1996年第3期17卷 207-208页

作者： azmat RASHEED, Asif IQTIDAR, Shahbaz khan ( Pharmacology Section, Faculty of Pharmacy, University of Punjab, Old Campus, Lahore, Pakistan ) University of Punjab 巴基斯坦

急性白血病病人化疗后的血液学及生化变化ＡｚｍａｔＲＡＳＨＥＥＤ，ＡｓｉｆＩＱＴＩＤＡＲ，ＳｈａｈｂａｚＫＨＡＮ（ＰｈａｒｍａｃｏｌｏｇｙＳｅｃｔｉｏｎ，ＦａｃｕｌｔｙｏｆＰｈａｒｍａｃｙ，ＵｎｉｖｅｒｓｉｔｙｏｆＰｕ... 详细信息

急性白血病病人化疗后的血液学及生化变化ＡｚｍａｔＲＡＳＨＥＥＤ，ＡｓｉｆＩＱＴＩＤＡＲ，ＳｈａｈｂａｚＫＨＡＮ（ＰｈａｒｍａｃｏｌｏｇｙＳｅｃｔｉｏｎ，ＦａｃｕｌｔｙｏｆＰｈａｒｍａｃｙ，ＵｎｉｖｅｒｓｉｔｙｏｆＰｕｎｊａｂ，ＯｌｄＣａｍｐｕｓ，Ｌａ...

关键词：淋巴细胞性白血病髓细胞性抗肿瘤药血液化学

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：