نتایج جستجو برای: tensilecompressive yield stresses
تعداد نتایج: 232264 فیلتر نتایج به سال:
Ice streams are distinct, fast-flowing regimes within ice sheets that exhibit fundamentally different characteristics as compared to the slow-moving inner parts of the ice sheets. While alongflow surface profiles of ice sheets are typically convex, some ice streams show linearly sloping or even concave surface profiles. We use observational data of the Siple Coast in Antarctica to inversely cal...
It is widely stated that yield stress extraction from micro-compression testing can be unreliable due to factors such as the pillar taper, pillar-punch misalignment and lateral displacement for example through discrete slip events. This study reports on how these eradicated when using digital image correlation based strain mapping. approach demonstrated a conventional micropillar compression ex...
Understanding the genetic basis of phenotypic plasticity is crucial for predicting and managing climate change effects on wild plants and crops. Here, we combined crop modelling and quantitative genetics to study the genetic control of oil yield plasticity for multiple abiotic stresses in sunflower. First, we developed stress indicators to characterize 14 environments for three abiotic stresses...
To develop superior rice varieties with improved yield in most rainfed areas of Asia/Africa, we started an introgression-breeding program for simultaneously improving yield and tolerances of multiple abiotic stresses. Using eight BC1 populations derived from a widely adaptable recipient and eight donors plus three rounds of phenotypic selection, we developed 496 introgression lines (ILs) with s...
144 (eds M.C.S. Wopereis et al.) Crop and water management can be improved through efficient irrigation schemes, better infrastructure and hydrological control, and optimal use of fertilizers, which can alleviate some of the effects of abiotic stresses. These measures are effective in reducing yield losses, and most improved varieties are responsive to such measures, consequently stabilizing pr...
Several abiotic and biotic stresses can affect soybean in a growing season. Heterodera glycines, soybean cyst nematode, reduces yield of soybean more than any other pathogen in the United States. Field and greenhouse studies were conducted to determine whether preemergence and postemergence herbicides modified the reproduction of H. glycines, and to determine the effects of possible interactive...
Instrumented contact experiments are performed on three metallic glasses to systematically study shear band formation near a stress concentration. The results suggest that high local stresses at a point in the glass are insufficient to initiate a shear band. Rather, the yield strength must be exceeded along the entire length of a viable shear path in order for a shear band to form. Because of t...
in order to investigate the effects of different irrigation levels and biological fertilizers on quantitative and qualitative yield of ajowan (carum copticum l.), a field experiment was conducted at a farm located in west azerbaijan province - city nagadeh, iran during growing season of 2012-2013. the experiment was arranged as split plot based on randomized complete block design in three repli...
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