نتایج جستجو برای: grain size and shape

تعداد نتایج: 16894595  

Journal: :international journal of civil engineering 0
a. kaveh iust b. mirzaei iust a. jafarvand iust

in this paper, the problem of simultaneous shape and size optimization of single-layer barrel vault frames which contains both of discrete and continuous variables is addressed. in this method, the improved magnetic charged system search (imcss) is utilized as the optimization algorithm and the open application programming interface (oapi) plays the role of interfacing analysis software with th...

2012
Juan Li Huangwei Chu Yonghong Zhang Tongmin Mou Changyin Wu Qifa Zhang Jian Xu

Heading date and grain weight are two determining agronomic traits of crop yield. To date, molecular factors controlling both heading date and grain weight have not been identified. Here we report the isolation of a hemizygous mutation, heading and grain weight (hgw), which delays heading and reduces grain weight in rice. Analysis of hgw mutant phenotypes indicate that the hemizygous hgw mutati...

2016
Shuangcheng Li Fengyan Gao Kailong Xie Xiuhong Zeng Ye Cao Jing Zeng Zhongshan He Yun Ren Wenbo Li Qiming Deng Shiquan Wang Aiping Zheng Jun Zhu Huainian Liu Lingxia Wang Ping Li

Grain weight is the most important component of rice yield and is mainly determined by grain size, which is generally controlled by quantitative trait loci (QTLs). Although numerous QTLs that regulate grain weight have been identified, the genetic network that controls grain size remains unclear. Herein, we report the cloning and functional analysis of a dominant QTL, grain length and width 2 (...

Journal: :تحقیقات مهندسی کشاورزی 0
حسین حمیدی فر دانشجوی کارشناسی ارشد دانشکده مهندسی و فناوری کشاورزی دانشگاه تهران محمدحسین امید دانشیار گروه مهندسی آبیاری و آبادانی دانشکده مهندسی و فناوری کشاورزی دانشگاه تهران

the effect of grain size, tailwater depth and grain froude number on local scour caused by submerged horizontal jets issuing below a sluice gate was investigated. noncohesive sediments with two gradations downstream of a horizontal apron were used in the experiments. the experiments were carried out at different inflow froude numbers and a range of tailwater depth from low to high submergence. ...

Journal: :Agronomy 2022

Grain shape improvement, which determines grain yield, quality traits and commercial value, is an extremely important aspect of rice breeding. size controlled by multiple genes, Maker Assistant Selection (MAS) breeding effective for breeders in developing stable efficient markers to aggregate these genes order speed up the selection new lines with desirable during process. In this study, functi...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تحصیلات تکمیلی علوم پایه زنجان - دانشکده فیزیک 1392

in the first part of this thesis we explored wetting and its dynamics for small droplets. first, we showed how a simple feature of water droplets on a surface, i.e. laplace pressure, can be exploited to build a micropump. we investigated capillary pumping in microchannels both experimentally and numerically. putting two droplets of different sizes at the in/outlet of a microchannel, will ge...

Water deficit is one of the most important abiotic factors limiting growth, which adversely affect growth and crop production. In order to study the relationship between kernel size and phenological characteristics on grain yield, 46 local bread wheat genotypes along with four varieties were evaluated in randomized complete block design with three replications under irrigation and water deficit...

2007
James Giese

Food compositions are often quite complex, and minor differences can trigger unforeseen results. The complexity of sugars suggests that Mother Nature must have been a food scientist. Just as some of us have studied sugars and other carbs for decades, others are puzzling over the shape and size of proteins and fats. Add water to the mix, and opinions regarding what happens next makes the U.N. lo...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده جغرافیا 1392

adolescents and young adults and their problems is an issue whose importance is obvious to anyone because youth are the founders of our countrys future and requires proper planning to be on leisure. given the importance of leisure,this study to investigate needs assessment and planning how adolescents and young adults spend their leisure time in urban of case study of high school girls and boys...

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