nitrate is one of the major sources of nitrogen for the growth of plants. it is taken up by plant roots and transported to the leaves where it is reduced to nitrite in the. the main objective of this research was to investigate stimulatory effects of sodium nitrate, potassium nitrate, ammonia and urea on the production/generation of the nitrate reductase mrna in triticum aestivum plants. the pl...

abstract nowadays supply chain management has become one of the powerful business concepts for organizations to gain a competitive advantage in global market. this is the reason that now competition between the firms has been replaced by competitiveness among the supply chains. moreover, the popular literature dealing with supply chain is replete with discussions of leanness and agility. agile ...

Two separate bodies of literature on stabilization give radically different results, yet these contradictions do not appear to have attracted any attention until now. The first arises from the neoclassical theory of stabilization and predicts that beneficial stabilization will always attract positive supply response. The second arises from the work of Newbery and Stiglitz and predicts 'perverse...

Over the past decade, firms have adopted supply chain management as a critical element of their corporate strategies. Despite these efforts, it is our observation that many firms do not realize the anticipated benefits of constructing collaborative operating relationships with supply chain partners. Our purpose in this paper is to establish a set of guiding principles for the effective design a...

Coordination within a supply chain is a strategic response to the problems that arise from interorganizational dependencies within the chain. A coordination mechanism is a set of methods used to manage interdependence between organizations. Given the increasing importance of high-performance supply, and the advantages to be gained through supply chain coordination, the challenge to an organizat...

Governmental organizations play a major role in disaster relief operations. Supply chains set up to respond to disasters differ dramatically in many dimensions that affect the cost of relief efforts. One factor that has been described recently is self-sustainment, which occurs when supplies consumed by intermediate stages of a supply chain must be provided via the chain itself because they are ...

Oxygen homeostasis under conditions of limited O2 supply requires hypoxia-dependent gene regulation. The transcription factor complex hypoxia-inducible factor 1 (HIF-1) has been recognized as the master regulator that mediates the adaptational genetic response to ensure restoration of energy supply. This review will focus on the recent advances in understanding the hypoxia-induced cellular resp...