نتایج جستجو برای: dry periods
تعداد نتایج: 202431 فیلتر نتایج به سال:
BACKGROUND: Dairy cows undergo physiological changes during pregnancy and lactation and cardiovascular system may alter during these periods. OBJECTIVES: Understanding the physiological effects of production periods of dairy cows on heart electrical activities can aid to better monitoring the cardiovascular system in these animals. METHODS: Five multiparous Holstein dairy cows were studied from...
To study the effect of irrigation periods on the yield of two Agropyron species in climatic conditions of Damghan, an experiment was conducted as split plot in a randomized complete block design with four replications at the Ahvano rangelands. Main plots consisted of four irrigation periods: no irrigation and irrigation periods of 20, 40 and 60 days and the subplots were devoted to two A. elong...
The study was conducted with the application of the model MoDrY (Model-Dry periods-Yield) for the estimation of the level of potato yields on the basis of dry periods occurring during the particular periods between the phenological phases of the crop plant. A characteristic feature of this model, unlike most existing weatheryield models, is that the principle of its operation is based only ...
We consider a continuous-review inventory model for a retailer who faces deterministic demand but whose supplier is unreliable. The supplier experiences “wet” and “dry” (operational and disrupted) periods whose durations are exponentially distributed. The retailer follows an EOQ-like policy during wet periods but may not place orders during dry periods; any demands occurring during dry periods ...
We consider a continuous-review inventory model for a firm that faces deterministic demand but whose supplier experiences random disruptions. The supplier experiences “wet” and “dry” (operational and disrupted) periods whose durations are exponentially distributed. The firm follows an EOQ-like policy during wet periods but may not place orders during dry periods; any demands occurring during dr...
Climate projections for the future indicate that the United Kingdom will experience hotter, drier summers and warmer, wetter winters, bringing longer dry periods followed by rewetting. This will result in changes in phosphorus (P) mobilization patterns that will influence the transfer of P from land to water. We tested the hypothesis that changes in the future patterns of drying-rewetting will ...
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