unmineralized
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The morphology of the mineral dependents on the solution characteristics. The main component of mineral was hydroxyapatite containing a little of CO32- group which the Ca/P ratio is 1.53, similar to the major mineral component of bone tissue. The porosities of the mineralized and unmineralized 3-D porous PLGA were (84.86±8.52)% and(79.70±7.70)% respectively. The biomechanical strength was 0.784±0.156 N/mm2 in unmineralized PLGA and 0.858±0.145N/mm2 in mineralized PLGA.
结果:PLGA经碱性溶液水解处理后表面亲水性明显增强,在0.5倍SBF中仅有少量矿物沉积,在SBF及1.5倍SBF中矿化后表面可以形成明显的矿化物;矿化物的形态与矿化液的浓度有关;矿化物主要成分为羟基磷灰石,含有碳酸根成分,钙磷比为1.53,类似于人骨无机质。
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Gold is disseminated in the upper portion of a lithic tuff unit, immediately below the contact with capping unmineralized andesite.
浸染型的黄金散布在岩屑凝灰岩上部分,紧靠在接触带的下面,该接触带的覆盖岩是未矿化的安山石。
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In unmineralized rocks, the applied current is carried only by the ionic solutions on pore spaces and the resistivity is independent of the frequency of the current.
在未矿化岩石中,只有岩石孔隙内的液体携带电流而电阻率却不会取决于电流的频率。