SPACE AND NATIONAL SECURITY: POINTS OF INTERACTION, OPPORTUNITIES AND ISSUE OF PRIORITY


Approximate equations for circular hinge stiffnesses

Flexure hinges are widely used for very high precision mechanisms, such as a high precision linear guide, a nano positioning stage, a robot hand and etc., because of no gap and no friction.Regarding circular hinge stiffnesses, Paros and Weisbord derived exact solutions, but they are unwieldly because of the complexity.Simpler equations are preferre

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Legume crops use a phosphorus-mobilising strategy to adapt to low plant-available phosphorus in acidic soil in southwest China

Phosphorus (P) deficiency significantly affects crop productivity, especially legume crops.Therefore, High Rise Stove Pipe it is important to understand the P-acquisition strategies of different leguminous crops.In this study, we undertook a pot experiment with 11 legume crops (soybean, faba bean, pea, cowpea, common bean, lentil, adzuki bean, chic

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