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

Effect of weld line positions on the tensile deformation of two-component metal injection moulding

引用

International Journal of Minerals,Metallurgy and Materials 2017年第12期24卷 1384-1393页

作者： Anchalee Manonukul Sukrit Songkuea Pongporn Moonchaleanporn Makiko tange National Metal and Materials Technology Center(MTEC) National Science and Technology Development Agency(NSTDA)114 Thailand Science ParkPaholyothin RoadKlong 1Klong LuangPathumthani 12120Thailand Taisei Kogyo(Thailand)Co. Ltd.Room INC2D-409Innovation Cluster 2 BuildingTower D141 Thailand Science ParkPaholyothin RoadKlong 1Klong Luang Pathumthani 12120Thailand

Knowledge of the mechanical properties of two-component parts is critical for engineering functionally graded components. In this study, mono-and two-component tensile test specimens were metal injection moulded. Three different weld line positions were generated in the two-component specimens. Linear shrinkage of the two-component specimens was greater than that of the mono-component specimens because the incompatibility of sintering shrinkage of both materials causes biaxial stresses and enhances sintering. The mechanical properties of 316L stainless steel were affected by the addition of a coloured pigment used to identify the weld line position after injection moulding. For the two-component specimens, the yield stress and ultimate tensile stress were similar to those of 316L stainless steel. Because 316L and 630(also known as 17-4PH) stainless steels were well-sintered at the interface, the mechanical properties of the weaker material(316L stainless steel) were dominant. However, the elongations of the two-component specimens were lower than those of the mono-component specimens. An interfacial zone with a microstructure that differed from those of the mono-material specimens was observed; its different microstructure was attributed to the gradual diffusion of nickel and copper.

关键词： co-meal injection moulding 316L stainless steel 630 stainless steel joining position tensile deformation

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

SV40 VP4表达缺陷突变体表现出温度敏感的生长缺陷

引用

中国畜牧兽医 2011年第5期38卷 137-137页

作者： Shoichiro tange 刘丹

通过对温度敏感d型(tsd)突变猴病毒40(SV40)进行研究,发现VP4的tsd222突变体和VP2的M228Ⅰ突变体一样,是在核苷酸水平的表达缺失。早前研究指出,VP4的缺失导致病毒在BSC-1细胞传播的缺陷,该突变还在CV-1细胞上表现为对温度敏感的生长缺... 详细信息

通过对温度敏感d型(tsd)突变猴病毒40(SV40)进行研究,发现VP4的tsd222突变体和VP2的M228Ⅰ突变体一样,是在核苷酸水平的表达缺失。早前研究指出,VP4的缺失导致病毒在BSC-1细胞传播的缺陷,该突变还在CV-1细胞上表现为对温度敏感的生长缺陷。tsd222与保留了VP4的ORF的tsd101(VP3 Q113K)和tsd202(VP3P108S)生长表型相似,这3个突变体并没有相互补充,说明其缺失在功能上没有区别。对tsd222感染的细胞转导表达野生型VP4的SV40,并不能改善细胞在非许可温度下的生长缺陷。结果表明,次要衣壳蛋白的tsd突变对病毒的传播影响更大,且VP4的ORF缺失可能对病毒的生长有所影响。

关键词：多瘤病毒 SV40 VP4 温度敏感型

来源：

维普期刊数据库

同方期刊数据库博看期刊评论

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

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

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：