检索结果-南通市图书馆

reduced tillage with residue retention improves soil labile carbon pools and carbon lability and management indices in a seven-year trial with wheat-mung bean-rice rotation

引用

Pedosphere 2022年第6期32卷 916-927页

作者： rafeza BEGUm mohammad m.r.jahangir mohammad JAHIrUDDIN mohammad rafiqul ISLAm Shaikh m.BOKHTIAr Khandakar r.ISLAm Department of Soil Science Bangladesh Agricultural UniversityMymensingh 2202(Bangladesh) Soil resource Development Institute Dhaka 1215(Bangladesh) South Asian Association for regional Cooperation(SAArC)Agriculture Center Dhaka 1215(Bangladesh) The Ohio State University Columbus OH 43235(USA)

Soil total organic carbon(TOC)is a composite indicator of soil quality with implications for crop production and the regulation of soil ecosystem *** reports on the dynamics of TOC as a consequence of soil management practices in subtropical climatic conditions,where microbial carbon(C)loss is high,are very *** objective of our study was to evaluate the impact of seven years of continuous tillage and residue management on soil TOC dynamics(quantitative and qualitative)with respect to lability and stratification under an annual wheat-mung bean-rice cropping *** soil samples were collected at 0-15 and 15-30 cm depths from a three-replicate split-plot experiment with tillage treatment as the main plots and crop residue levels as the *** tillage treatments included conventional tillage(CT)and strip tillage(ST).residue levels were high residue level(Hr),30%of the plant height,and low residue level(Lr),15%.In addition to TOC,soil samples were analyzed for particulate organic C(POC),permanganate oxidizable C(POXC),basal respiration(Br),specific maintenance respiration rate(qCO_(2)),microbial biomass C(mBC),potentially mineralizable C(PmC),and TOC lability and management *** ST treatment significantly increased the TOC and labile C pools at both depths compared with the CT treatment,with the effect being more pronounced in the surface *** Hr treatment increased TOC and labile C pools compared with the Lr *** ST+Hr treatment showed significant increases in mBC,metabolic quotient(qr),C pool index(CPI),C lability index(CL_(I)),and C management index(CmI),indicating improved and efficient soil biological activities in such systems compared with the CT ***,the stratification values,a measure of soil quality improvement,for POC and mBC were>2,indicating improved soil quality in the ST+Hr treatment compared with the CT *** ST+Hr treatment not only significantly increased the contents o

关键词： basal respiration carbon management index carbon stratification particulate organic carbon permanganate oxidizable carbon total organic carbon

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

The sol-gel derived Co-mn/TiO_2 catalysts for light olefins production

引用

燃料化学学报 2014年第2期42卷 212-218页

作者： mohammad mehdi Khodaei mostafa Feyzi jahangir Shahmoradi mohammad Joshaghani Faculty of Chemistry Razi University

在这个研究工作，二 30%(Co-mn )/TiO2 催化剂用大音阶的第五音胶化(催化剂 A ) 和一起沉淀(催化剂 B ) 被准备方法。到在 Fischer-Tropsch 合成(英尺) 的 C24 轻石蜡的活动和选择在不同运作的条件下面在一个改正床反应堆被学习了。这... 详细信息

在这个研究工作，二 30%(Co-mn )/TiO2 催化剂用大音阶的第五音胶化(催化剂 A ) 和一起沉淀(催化剂 B ) 被准备方法。到在 Fischer-Tropsch 合成(英尺) 的 C24 轻石蜡的活动和选择在不同运作的条件下面在一个改正床反应堆被学习了。这些运作的条件是：温度

关键词： Fischer-Tropsch synthesis light olefins characterization

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

risk factors for congenital nasolacrimal duct obstruction in children under two years of age

引用

国际眼科杂志 2025年第1期25卷 17-23页

作者： rozhin Kasiri Gholamreza Khataminia Ali Kasiri mohammad Sadegh mirdehghan mohammad Armin Kasiri Infectious Ophthalmologic research Center Ahvaz Jundishapur University of Medical SciencesAhvaz ***Iran Islamic Azad University Tehran medical Sciences Tehran ***Iran

·AIm:To identify various risk factors that may play a significant role in the development of congenital nasolacrimal duct obstruction(CNLDO).·mETHODS:This observational case-control study included a case group of 122 children less than two years of age with CNLDO who underwent probing and irrigation treatment at the ophthalmology department of Imam Khomeini Hospital in Ahvaz,Iran,from June 2022 to June2024.A control group of 122 age-matched children without CNLDO was also included for *** was collected from the children's medical records.·rESULTS:The study found a significant correlation between the occurrence of CNLDO and several maternal factors,such as preeclampsia,the use of levothyroxine,hypothyroidism,having more than three pregnancies(gravidity>3),natural pregnancy,and gestational diabetes ***,in children,factors,such as oxygen therapy,anemia,reflux,jaundice,and a family history of CNLDO in first-degree relatives were associated with CNLDO,and maternal preeclampsia and hypothyroidism were found to significantly increase the risk of developing CNLDO in children.·CONCLUSION:Given that CNLDO affects both premature and full-term children,the present findings may potentially facilitate the early identification of children and infants at risk of nasolacrimal duct obstruction,thereby preventing the onset of chronic dacryocystitis.

关键词： risk factors congenital nasolacrimal duct obstruction children

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

Evaluation of rabbit antibody response against 8 and 16 kDa recombinant subunits of antigen B from Echinococcus granulosus

引用

Asian Pacific Journal of Tropical medicine 2012年第5期5卷 355-357页

作者： jahangir Abdi Bahram Kazemi mohammad Hasan Karimfar mohammad Bagher rokni Department of medical Parasitology and mycology School of ParamedicineIlam University of Medical SciencesHornIran Cellular and molecular Biology research Centre Shahid Reheshti University(Medical Campus)Tehran.Iran Department of medical Parasitology and mycology School of ParamedicineIlam University of Medical SciencesIlam.Iran Department of medical Parasitology and mycology School of Public HealthTehran University of Medical SciencesTehranIran

Objective:To immunize rabbits with 12 and 16 kDa recombinant subunits of antigen B from Echinococcus granulosus(***) and measuring polyclonal antibody and humoral immune response using ELISA and gel ***:Two mentioned antigens were cloned and expressed in expression vector and purified by affinity *** young rabbits were selected and challenged intradermallt with yielded recombinant ***’ sera were collected post infection and were tested using ELISA and gel diffusion for polyclonal antibody detection 10 days after last ***:The specific antibody against the recombinant peptides was efficiently produced within 4 weeks post ***: Produced recombinants proteins could induce the immune response of the rabbits successfully. This process might improve the clarification of diagnosis and vaccination as regards hydatidosis.

关键词： Cystic echinococcosis Hydatidosis Polyclonal antibody

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

Heterogeneity of mature oligodendrocytes in the central nervous system

引用

Neural regeneration research 2025年第5期20卷 1336-1349页

作者： Chao Weng Adam m.r.Groh moein Yaqubi Qiao-Ling Cui Jo Anne Stratton G.r.Wayne moore Jack P.Antel Neuroimmunology Unit Montreal Neurological Institute-HospitalDepartment of Neurology and NeurosurgeryMcGill UniversityMontrealQCCanada Department of Neurology Renmin Hospital of Wuhan UniversityWuhanHubei ProvinceChina

mature oligodendrocytes form myelin sheaths that are crucial for the insulation of axons and efficient signal transmission in the central nervous *** evidence has challenged the classical view of the functionally static mature oligodendrocyte and revealed a gamut of dynamic functions such as the ability to modulate neuronal circuitry and provide metabolic support to *** the recognition of potential heterogeneity in mature oligodendrocyte function,a comprehensive summary of mature oligodendrocyte diversity is *** delve into early 20th-century studies by robertson and río-Hortega that laid the foundation for the modern identification of regional and morphological heterogeneity in mature ***,recent morphologic and functional studies call into question the long-assumed homogeneity of mature oligodendrocyte function through the identification of distinct subtypes with varying myelination ***,modern molecular investigations,employing techniques such as single cell/nucleus rNA sequencing,consistently unveil at least six mature oligodendrocyte subpopulations in the human central nervous system that are highly transcriptomically diverse and vary with central nervous system *** and disease related mature oligodendrocyte variation denotes the impact of pathological conditions such as multiple sclerosis,Alzheimer's disease,and psychiatric ***,caution is warranted when subclassifying mature oligodendrocytes because of the simplification needed to make conclusions about cell identity from temporally confined *** studies leveraging advanced techniques like spatial transcriptomics and single-cell proteomics promise a more nuanced understanding of mature oligodendrocyte *** research avenues that precisely evaluate mature oligodendrocyte heterogeneity with care to understand the mitigating influence of species,sex,central nervous system region,age,and disease,

关键词： aging central nervous system diseases electron microscopy heterogeneity immunohistochemistry myelin sheath natural history neuroglia oligodendroglia single-cell gene expression 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

A rULE-BASED APPrOACH TO FArSI LANGUAGE TEXT-TO-PHONEmE CONVErSION

A RULE-BASED APPROACH TO FARSI LANGUAGE TEXT-TO-PHONEME CONV...

引用

6～(th) International Conference on Spoken Language Processing

作者： m.r.Sadigh H.Sheikhzadeh m.r.jahangir A.Farzan Dept. of Elect. Eng. Amirkabir Univ. of Tech. (Tehran Polytechnic Tehran and PSA co. Ltd. Tehran. Dept. of Elect. Eng. Amirkabir Univ. of Tech. (Tehran Polytechnic Tehran Dept. of Elect. Eng. Amirkabir Univ. of Tech. (Tehran Polytechnic Tehran and PSA co. Ltd. Tehran. PSA co. Ltd. Tehran

＜正＞A conversion from orthographic （written） form to a phonetic transcription is the first stage in a text-to-speech system. In this study, algorithms are presented to facilitatc the text-to-phoneme （TTP） conversion for the Farsi language. Using a lexicon of about 15000 base morphemes, word formation rules are investigated and implemented. moreover, a word segmentation of the written sentence has to be done prior to any phonetic

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

A Voltage-supportive Controller for Ultra-fast Electric Vehicle Chargers in Islanded DC microgrids

引用

Journal of modern Power Systems and Clean Energy 2023年第3期11卷 896-906页

作者： Noushin Poursafar Seyedfoad Taghizadeh m.jahangir Hossain masoud Karimi-Ghartemani School of Engineering Macquarie UniversitySydneyNSW 2109Australia School of Electrical and Data Engineering University of Technology SydneySydneyNSW 2007Australia Department of Electrical and Computer Engineering Mississippi State UniversityMississippiMS 39762USA IEEE

This paper presents a controller for fast and ultrafast electric vehicle(EV)charging *** affecting the charging efficiency,the proposed controller enables the charger to provide support to the interconnection voltage to counter and damp its *** solutions are either hardware-based such as using supercapacitors and flywheels which increase the cost and bulkiness of the charging station,or software-based such as P/V droop methods which are still unable to provide a robust and strong voltage *** paper proposes an emulated supercapacitor concept in the control system of the ultra-fast EV charger in an islanded DC ***,it converts the EV from a static load to a bus voltage supportive load,leading to reduced bus voltage oscillations during single and multiple ultra-fast EV charging operations,and rides through and provides supports during extreme external *** analysis and design guidelines of the proposed controller are presented,and its effectiveness and improved performance compared with conventional techniques are shown for different case studies.

关键词： Electric vehicle(EV) charging station ultrafast charging DC microgrid voltage support capacitor emulation

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

Genetic Diversity Analysis of rice Germplasm in Tripura State of Northeast India Using Drought and Blast Linked markers

引用

rice science 2017年第1期24卷 10-20页

作者： Alpana ANUPAm jahangir ImAm Syed mohammad QUATADAH Anantha SIDDAIAH Shankar Prasad DAS mukund VArIAr Nimai Prasad mANDAL Central rainfed Upland rice research Station ICAr research Complex for North Eastern Hill region Tripura Centre

We genotyped 74 rice germplasms including Tripura＇s local landraces, improved varieties, cultivars and breeding lines and other rice varieties using molecular markers for genetic diversity, drought QTLs, and blast resistance genes. The number of alleles per locus ranged from 2 to 5 with an average of 2.9. The polymorphic information content value per locus ranged from 0.059（rm537） to 0.755（rm252） with an average of 0.475. Cluster analysis based on 30 simple sequence repeat markers revealed 5 clusters and also indicated the presence of variability within the rice accessions. The drought QTL q DTY2.1 was found in 56.0% of germplasms and q DTY1.1 was detected in only 6.8% of the germplasms. Out of seven rice blast resistance genes screened, only two rice varieties, rCPL-1-82 and Buh Vubuk（Lubuk）, were positive for four blast resistance genes while only releng possessed two blast resistance genes. Among 74 rice germplasms, only three accessions, releng, rCPL1-82 and Buh Vubuk（Lubuk）, possessed both drought-related QTLs and blast resistance genes. Overall, the 74 indigenous rice genotypes showed low level of genetic diversity, which is in contrast to high level of genetic diversity among rice varieties in northeast India, where highlights the good farming practice, conservation of germplasms and the limitation of molecular markers employed in this study. The presence of both drought related QTLs and blast resistance genes in some of the germplasms can be useful in future breeding programmes.

关键词： drought blast alleles breeding ranged polymorphic Northeast screened upland germplasm

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

Generation of a long-term daily gridded precipitation dataset for the rTjSj-Upper Indus Basin(UIB)through temporal reconstruction,Correction I sag&Informed regionalization-“reCIr”

引用

International Soil and Water Conservation research 2021年第3期9卷 445-460页

作者： Asim jahangir Khan manfred Koch Department of Geohydraulics and Engineering Hydrology University of Kassel34125KasselGermany

This study attempted to generate a long-term(1961-2010)daily gridded precipitation dataset for the Upper Indus Basin(UIB)with orographic adjustments so as to generate realistic precipitation estimates,enabling hydrological and water resource investigations that can close the water balance,that is difficult,if not impossible to achieve with the currently available precipitation data products for the *** procedure includes temporal reconstruction of precipitation series at points where data were not recorded prior to the mid-nineties,followed by a regionalization of the precipitation series to a smaller scale across the basin(0.125°x 0.125°),while introducing adjustments for the orographic effect and changes in glacier *** reconstruction process involves interpolation of the precipitation at virtual locations of the current(1995-)dense observational network,followed by corrections for frequency and intensity and adjustments for temporal trends at these virtual *** data generated in this way were further validated for temporal and spatial representativeness through evaluation of SWAT-modelled streamflow responses against observed flows across the *** results show that the calibrated SWAT-simulated daily discharge at the basin outlet as well as at different sub-basin outlets,when forcing the model with the reconstructed precipitation of years 1973—1996,is almost identical to that when forcing it with the reference precipitation data(1997-2008).Finally,the spatial distribution pattern of the reconstructed(1961—1996)and reference(1997—2008)precipitation were also found consistent across the UIB,reflecting well the large-scale atmospheric-circulation pattern in the region.

关键词： Precipitation Temporal reconstruction Orographic correction factor(OCF) Soil and water assessment tool(SWAT) Glacier/water mass balance Upper indus basin(UIB)

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

Annual growth of Fagus orientalis is limited by spring drought conditions in Iran’s Golestan Province

引用

Journal of Forestry research 2024年第1期35卷 128-142页

作者： Khalil Ghorbani jahangir mohammadi Laleh rezaei Ghaleh Department of Water Engineering Faculty of Water and Soil EngineeringGorgan University of Agricultural Sciences and Natural ResourcesGorganIran Department of Forestry Gorgan University of Agricultural Sciences and Natural ResourcesGorganIran Department of Water Engineering Faculty of AgricultureUrmia UniversityUrmiaIran

Due to the lack of a uniform and accurate defi-nition of‘drought’,several indicators have been introduced based on different variables and methods,and the efficiency of each of these is determined according to their relationship with *** relationship between two drought indices,SPI(standardized precipitation index)and SPEI(standard-ized precipitation-evapotranspiration index)in different sea-sons was investigated using annual rings of 15 tree samples to determine the effect of drought on the growth of oriental beech(Fagus orientalis Lipsky)in the Hyrcanian forests of northern *** different evapotranspiration calcula-tion methods were evaluated on SPEI efficiency based on Hargreaves-Samani,Thornthwaite,and Penman-monteith methods using the step-by-step m5 decision tree regression *** results show that SPEI based on the Penman-monteith in a three-month time scale(spring)had similar temporal changes and a better relationship with annual tree rings(r^(2)=0.81)at a 0.05 significant *** change and a decreasing trend in the time series of annual tree rings are similar to the variation in the SPEI based on the Penman-monteith *** affecting evapotranspiration,temperature,wind speed,and sunshine hours(used in the Penman-monteith method),increased but precipitation *** non-linear modeling methods,SPEI based on Penman-monteith best illustrated climate changes affecting tree growth.

关键词： Climate change Drought index Hyrcanian forests SPEI'Annual growth rings Fagus orientalis

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

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

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：