Calcium Oxalate Crystal Yield in Various Gravity Environments

Gravitational and space research : publication of the American Society for Gravitational and Space Research Pub Date : 2014-12-01 DOI:10.2478/gsr-2014-0013

R. Egusquiza, Robert Benjamin Runyon, Jordan Ringel, Craig Wayne Cole Seber, Gonzalo Leyva, Jose Correa, Coulibaly Datoliban Roland, Mujahid Umar, Ming Xiao, J. Bushoven, J. J. Goto

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Abstract

Abstract An experimental chamber and hand-manipulated syringe apparatus were designed, tested, and utilized to assess calcium oxalate crystal yield in Terrestrial-g (1 g), micro-g (0.01 g), Lunar-g (0.16 g), and Martian-g (0.38 g). Aqueous solutions of calcium chloride (100 mM) and oxalic acid (200 mM) were mixed to precipitate calcium oxalate crystals. Gravitational differences were hypothesized to result in differences in the yield of crystal formation. These data are essential for efforts to better understand the correlation between calcium oxalate crystal formation and the production of kidney stones often associated with long-term space missions. The analyses of crystal formation produced in the micro-g (≅0.01 g) conditions of this study suggest that calcium oxalate monohydrate formation yield is slightly greater than those produced in Terrestrial-g conditions.

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不同重力环境下草酸钙晶体产量

摘要:设计了草酸钙结晶实验箱和手摇注射器，并对其进行了测试和利用，以测定地质体(1 g)、微质体(0.01 g)、月质体(0.16 g)和火星质体(0.38 g)上草酸钙晶体的产率。将氯化钙(100 mM)和草酸(200 mM)水溶液混合，沉淀草酸钙晶体。假设重力的不同会导致晶体形成产率的不同。这些数据对于更好地了解草酸钙晶体形成与肾结石产生之间的关系至关重要，肾结石通常与长期太空任务有关。本研究在微g (0.01 g)条件下产生的晶体形成分析表明，草酸钙一水的生成率略高于在陆地g条件下产生的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Gravitational and space research : publication of the American Society for Gravitational and Space Research

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