检索结果-南通市图书馆

Assessing the Efficacy of Wheat-Soybean Based Intercropping System at Different Plant Densities in Bambili, Cameroon

引用

American Journal of Plant Sciences 2024年第4期15卷 235-251页

作者： Lendzemo E. Tatah Jeazet K. Teitiogo Oben Tom Tabi Tange D. Achiri Njualem D. Khumbah chi christopher tamu Department of Crop Production Technology College of Technology University of Bamenda Bambili Cameroon Department of Agronomic and Applied Molecular Sciences Faculty of Agriculture and Veterinary Medicine University of Buea Buea Cameroon School of Tropical Agriculture and Natural Resource Catholic University of Cameroon Bamenda Cameroon Department of Agricultural and Environmental Engineering College of Technology University of Bamenda Bambili Cameroon

Wheat is one of the most important cereals in the world, serving as a staple for millions globally. In the wake of the geopolitical crisis between Russia and Ukraine, it has become incumbent for many countries to invest in wheat production. Improving cropping systems for wheat production is paramount. Intercropping cereals with legumes has tremendous advantages. Therefore, this study was designed to optimize wheat production by intercropping it with soybean at different densities. Between March and August 2023, a randomized complete block design trial was conducted in Bambili, North West of Cameroon with treatments T1 (wheat monocrop at 200,000 plants ha−1), T2 (soybean monocrop at 250,000 plants ha−1), T3 (200,000 wheat and 125,000 soybean ha−1), T4 (100,000 wheat and 250,000 soybean ha−1), T5 (200,000 wheat and 250,000 soybean ha−1) and T6 (100,000 wheat and 125,000 soybean ha−1). Results revealed that growth parameters of wheat were not significantly influenced by monocrop or intercrop. The yield of wheat was significantly higher in the monocrop than the intercrop treatments, with slight variation amongst the intercrop treatments. Soybean yield was higher in the monocrop than in the intercrop, with no variations amongst the intercrop treatments. Only the land equivalence ratio (LER) for T5 was greater than 1.0. The competitive ratio for T5 was 0.54 for wheat and 1.90 for soybean, comparatively lower than the other monocrop treatments. Intercropping wheat and soybean at 200,000:250,000 ratio is recommended.

关键词： Competitive Ration Land Equivalence Ration Intercrop Soybean Wheat

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

Germination and Survival of Maize and Beans Seeds: Effects of Irrigation with NaCl and Heavy Metals Contaminated Water

引用

Open Journal of Applied Sciences 2022年第5期12卷 769-792页

作者： Cornelius Tsamo Sendze Martinien Alanyuy Eric Fru Zama chi christopher tamu Department of Agricultural and Environmental Engineering College of Technology University of Bamenda Bambili Cameroon Department of Chemistry Higher Teachers’ Training College University of Maroua Maroua Cameroon

Metal toxicity and soil salinity at excessive levels in soils are toxic to plants. The main objective of this study was to demonstrate the effects of water salinity (NaCl) and heavy metal concentration on germination and seedling characteristics of maize and beans seeds. Different concentrations of NaCl (0 to 35000 mg/L) and Zn2+, Cu2+ and Pb2+ with concentrations 0 to 600 μmol/L each were used separately. These solutions were used to irrigate maize and bean seeds for 30 days. Data was taken daily for the following parameters;“the number of germinated seeds, shoot length, shoot circumference, leaf area index, leaf colors, senescence, and disease occurrences.” The crops were uprooted at the end of the 30 days and their wet masses were measured and recorded. Results indicated that seed germination reduced with an increase in the concentration of NaCl for both maize and beans with 0% germination recorded in concentrations > 5000 mg/L. The same trends were observed for other parameters, the shoot length, the leaf area index, and the shoot circumference. “For heavy metals, the trends were similar. Beans growth was more affected by Zn and Cu but maize growth was more affected by Pb.” The dry masses and wet masses of the crops with higher concentrations of metals and salts were very low compared to the control experiments. For the effects of salinity and heavy metals on beans and maize seeds, there was a significant difference (P ≤ 0.001) between all tested concentrations and the control for all growth parameters monitored. It was concluded from the results that salinity and heavy metals affect the germination and seedling characteristics of maize and beans;though some metals are essential, their presence in higher concentrations instead cause harm.

关键词： Salinity Heavy Metals Pollution Seedling Characteristics Irrigation

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

Germination and Survival of Maize and Beans Seeds: Effects of Irrigation with NaCl and Heavy Metals Contaminated Water

引用

Open Journal of Applied Sciences（应用科学） 2022年第5期

作者： cornelius tsamo sendze martinien alanyuy eric fru zama chi christopher tamu

来源：博看期刊评论

在线全文

博看期刊

学校读者我要写书评

暂无评论

The Many Facets of History:A Study on the Accounts of the Dunkirk Evacuation

引用

Journal of Literature and Art Studies 2024年第6期14卷 404-409页

作者： DU Xing-chi Faculty of English Language and Culture Guangdong University of Foreign StudiesGuangzhouChina

This paper adopts a New Historicism approach to examine the shaping of the history of the Dunkirk evacuation through an analysis of Winston Churchill’s historic speech We Shall Fight on the Beaches,Ian McEwan’s novel Atonement,and christopher Nolan’s film *** research reveals that by uncovering and representing the neglected stories of marginalized groups in Atonement and Dunkirk,new evidentiary threads both enrich and contest the History embodied in Churchill’s ***,these alternative accounts both challenge and complement the prevailing historical discourse.

关键词： Dunkirk evacuation The History histories

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

Macroscopic analysis of time dependent plasticity in Ti alloys

引用

Journal of Materials Science & Technology 2022年第29期124卷 135-140页

作者： Yi Xiong Phani S.Karamched chi-Toan Nguyen David M.Collins christopher M.Magazzeni Edmund Tarleton Angus J.Wilkinson Department of Materials University of OxfordParks RoadOxford OX13PHUnited Kingdom Department of Materials and Processes Safran SASafran TechMany-les-Hameaux 78772France School of Metallurgy and Materials University of BirminghamEdgbastonBirmingham B152TTUnited Kingdom Department of Engineering Science University of OxfordParks RoadOxford OX13PJUnited Kingdom

Cold dwell fatigue is the critical technological issue in Ti alloys used in the cooler front sections of aerospace jet *** subjected to a sustained load(stress dwell),the lifetime of these Ti components can be drastically reduced by as much as an order of magnitude[1–4].Without a clear understanding of the effect,safety concerns are raised.

关键词： alloys fatigue lifetime

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

Sensitivity of precipitation statistics to urban growth in a subtropical coastal megacity cluster

引用

Journal of Environmental Sciences 2017年第9期29卷 6-12页

作者： christopher Claus Holst Johnny C.L.Chan chi-Yung Tam School of Energy and Enuironment City Uniuersity of liong KongHong KongChina Guy Carpenter Asia-Pacific Climate Impact Centre City Uniuersity of Hong KongHong KongChina Earth System Science Programme The Chinese Uniuersity of Hong KongHong KongChina

This short paper presents an investigation on how human activities may or may not affect precipitation based on numerical simulations of precipitation in a benchmark case with modified lower boundary conditions, representing different stages of urban development in the model. The results indicate that certain degrees of urbanization affect the likelihood of heavy precipitation significantly, while less urbanized or smaller cities are much less prone to these effects. Such a result can be explained based on our previous work where the sensitivity of precipitation statistics to surface anthropogenic heat sources lies in the generation of buoyancy and turbulence in the planetary boundary layer and dissipation through triggering of convection. Thus only mega cities of sufficient size, and hence human-activity-related anthropogenic heat emission, can expect to experience such effects. In other words, as cities grow, their effects upon precipitation appear to grow as well.

关键词： Urban precipitation Micro climate sensitivity Urbanization

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

Glial cells and glaucomatous neuropathy

引用

chinese Medical Journal 2007年第4期120卷 326-335页

作者： ZHONG Yi-sheng christopher Kai-shun Leung chi-pui Pang Department of Ophthalmology Ruijin Hospital Shanghai JiaotongUniversity Shanghai 200025 China Department of-Ophthalmology and Visual Sciences ChineseUniversity of Hong Kong Hong Kong China

Glaucomatous optic neuropathy is characterized by progressive loss of retinal ganglion cells associated with visual functional deficits. As the ganglion cells die in glaucoma, there is a progressive thinning of the nerve fibre layer （NFL）.l The underlying pathophysiological mechanisms, however, remain unclear. Many mechanisms are involved in the initiation and process of irreversible ganglionic cell death in glaucoma. These include reduced axoplasmic transport, accumulation of toxic levels of neurotransmitter, increased nitric oxide and endothelin syntheses, and remodelling of the extracellular matrix, among others.

关键词： OPTIC-NERVE HEAD RETINAL GANGLION-CELLS NITRIC-OXIDE SYNTHASE NECROSIS-FACTOR-ALPHA OPEN-ANGLE GLAUCOMA CILIARY NEUROTROPHIC FACTOR ASTROCYTE PRECURSOR CELLS MULLER CELLS IN-VITRO REACTIVE ASTROCYTES

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

Short-course or long-course radiation therapy as a part of a neoadjuvant regimen for stage Ⅱ & Ⅲ rectal adenocarcinoma?

引用

chinese Journal of Cancer Research 2019年第6期31卷 849-852页

作者： Nan Zhao christopher J Lin Fei Wang chi Lin Department of Radiation Oncology University of Nebraska Medical Center OmahaNE 68198USA University of Southern California Los Angeles CA 90007USA

The aim of this mini-review is to compare and contrast the pros and cons of short-course and long-course neoadjuvant chemoradiation therapy regimens for stageⅡ&Ⅲrectal *** trials have demonstrated the equal efficacy and safety of short-course and long-course radiation therapy as a part of neoadjuvant *** data also shows that total neoadjuvant therapy could be more successful than neoadjuvant chemoradiation followed by adjuvant *** review points out future research directions for patients with locally advanced rectal adenocarcinoma such as comparing total neoadjuvant therapy that contains a short-course of radiation therapy to the standard of care,and evaluating how the sequence of short-course radiation therapy and chemotherapy in the total neoadjuvant therapy impacts the pathological complete response(pCR)rate,local control,and survival outcomes.

关键词： Short-course long-course radiation therapy rectal cancer

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 novel radiomics signature based on T2-weighted imaging accurately predicts hepatic inflammation in individuals with biopsy-proven nonalcoholic fatty liver disease:a derivation and independent validation study

引用

Hepatobiliary Surgery and Nutrition 2022年第2期11卷 212-226,I0008-I0010页

作者： Zhong-Wei Chen Huan-Ming Xiao Xinjian Ye Kun Liu Rafael S.Rios Kenneth I.Zheng Yi Jin Giovanni Targher christopher D.Byrne Junping Shi Zhihan Yan Xiao-Ling chi Ming-Hua Zheng Department of Radiology the First Affiliated Hospital of Wenzhou Medical UniversityWenzhouChina Department of Hepatology Guangdong Provincial Hospital of Chinese Medicinethe Second Affiliated Hospital of Guangzhou University of Chinese MedicineGuangzhouChina Department of Radiology the Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical UniversityWenzhouChina NAFLD Research Center Department of Hepatologythe First Affiliated Hospital of Wenzhou Medical UniversityWenzhouChina Department of Pathology the First Affiliated Hospital of Wenzhou Medical UniversityWenzhouChina Section of Endocrinology Diabetes and MetabolismDepartment of MedicineUniversity and Azienda Ospedaliera Universitaria Integrata of VeronaVeronaItaly Southampton National Institute for Health Research Biomedical Research Centre University Hospital SouthamptonSouthampton General HospitalSouthamptonUK Department of Hepatology The Affiliated Hospital of Hangzhou Normal UniversityHangzhouChina Institute of Hepatology Wenzhou Medical UniversityWenzhouChina Key Laboratory of Diagnosis and Treatment for The Development of Chronic Liver Disease in Zhejiang Province WenzhouChina

Background:Currently,there are no effective methods for assessing hepatic inflammation without resorting to histological examination of liver tissue obtained by biopsy.T2-weighted images(T2WI)are routinely obtained from liver magnetic resonance imaging(MRI)scan *** aimed to establish a radiomics signature based on T2WI(T2-RS)for assessment of hepatic inflammation in people with nonalcoholic fatty liver disease(NAFLD).Methods:A total of 203 individuals with biopsy-confirmed NAFLD from two independent chinese cohorts with liver MRI examination were enrolled in this *** hepatic inflammatory activity score(IAS)was calculated by the unweighted sum of the histologic scores for lobular inflammation and *** thousand and thirty-two radiomics features were extracted from the localized region of interest(ROI)in the right liver lobe of T2WI and,subsequently,selected by minimum redundancy maximum relevance and least absolute shrinkage and selection operator(LASSO)*** T2-RS was calculated by adding the selected features weighted by their ***:Eighteen radiomics features from Laplacian of Gaussian,wavelet,and original images were selected for establishing *** T2-RS value differed significantly between groups with increasing grades of hepatic inflammation(P<0.01).The T2-RS yielded an area under the receiver operating characteristic(ROC)curve(AUROC)of 0.80[95%confidence interval(CI):0.71-0.89]for predicting hepatic inflammation in the training cohort with excellent *** AUROCs of T2-RS in the internal cohort and external validation cohorts were 0.77(0.61-0.93)and 0.75(0.63-0.84),***:The T2-RS derived from radiomics analysis of T2WI shows promising utility for predicting hepatic inflammation in individuals with NAFLD.

关键词： Nonalcoholic fatty liver disease(NAFLD) inflammation activity radiomics magnetic resonance imaging(MRI)

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

A comprehensive study of an ICME and SIR interaction in the heliosphere using Stereo spacecraft

A comprehensive study of an ICME and SIR interaction in the ...

引用

2022年中国地球科学联合学术年会

作者： Yutian chi christopher Scott Chenglong Shen Mengjiao Xu Luke Barnard Mathew Owens Jie Zhang Yuming Wang Mike Lockwood CAS Key Laboratory of Geospace Environment Department of Geophysics and Planetary SciencesUniversity of Science and Technology Department of Meteorology University of Reading Department of Physics and Astronomy George Mason University

In this work, we use multi-viewpoint data from remote and in-situ observations, combined with modeling studies, to present a comprehensive study of an Earth-directed coronal mass ejection (CME) that erupted on 3 April 2010, and its interaction with a stream Interaction Region (SIR). By connecting the HI images with the in-situ observations, we provide an explanation of the multiple fronts of the CME detected in HI images which, in this case, suggest that the outer feature detected by the HI-1 field of view is connected with a plasma parcel entrained in the SIR.

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

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：