学龄前儿童缺钙的危害及补钙方法浅析     

孟庆涛  刁全平  张逸馨  侯冬岩 《鞍山师范学院学报》2013,(2):62-66

钙是人体内含量最多、也是最容易缺乏的元素之一.学龄前儿童正处于生长的旺盛阶段,这个时期缺钙会严重影响身心的健康成长.缺钙儿童常出现骨骼发育不良、惊厥和智力发育迟缓等病症,还会增加铅中毒的几率.采用科学的方法,通过食物、药物等途径给儿童适当补钙,可确保儿童的健康成长及成年后的身体健康.  相似文献   

细胞Ca2+测定研究进展   总被引：2，自引：0，他引：2  

张小玲  鲍霞  贾宏瑛  李春迎 《咸阳师范学院学报》2002,17(6):19-26

对细胞游离Ca^2的研究进行了综述。分析了细胞游离Ca^2 的信使作用以及常用分析研究方法，对其优，缺点进行了比较和评述。  相似文献   

凝乳酶及氯化钙的添加量对凝乳及成品质量的影响   总被引：1，自引：0，他引：1  

崔惠玲  李彦林  蒋爱民 《漯河职业技术学院学报》2008,7(5):93-95

本试验主要研究氯化钙（CaCl2）及凝乳酶添加量对凝乳及成品感官质量的影响状况。在其它条件不变的情况下,分别将40％的氯化钙（CaCl2）溶液设定了260ml、300ml、370ml、400ml、3000ml等5种不同的添加量;将凝乳酶设定了45g、40g、35g、400g的添加量,并分别比较它们对凝乳及Mozzarella干酪质量的影响。试验表明,氯化钙和凝乳酶的添加量对凝乳时间、凝乳状态和成品感官质量都有较明显的影响。  相似文献   

原子吸收光谱法测定荸荠、莲藕、莲子中铁、锌、钙的含量     

徐春秀  蔡龙飞  林鑫 《韩山师范学院学报》2007,28(3):70-73

实验采用原子吸收光谱法测定荸荠、莲藕、莲子中的铁、锌、钙的含量,在样品处理过程中,采用湿法消化法和干法灰化法这两种处理方法进行多元素的消解,并对这两种样品处理方法的操作效果及测定结果进行比较,在本实验的条件下,铁的线性关系是0．1～5．0 mg/L,检出限为0．19 mg/L;锌的线性关系是0．2～1．0 mg/L,检出限为0．04 mg/L;钙的线性关系是0．5～14．0 mg/L,检出限为0．22 mg/L．回收率在90．6%～103．2%范围内．  相似文献   

肌细胞内钙离子平衡的调节机制     

李洁 《四川体育科学》2000,(1):11-14

细胞内松驰结合不自由状态的Ｃａ＾２＋浓度变化调节着细胞许多基本生理功能。肌细胞通过电压依赖性钙通道,ｒｖａｎｏｄｉｎｅ受体系统、钙泵、Ｎａ＾＋、Ｃａ＾２＋交换等机制,实现细胞内外Ｃａ＾２＋转动的调节,从百维持肌细胞正常的生理功能。  相似文献   

Evaluation of Flow Rate,pH, Buffering Capacity,Calcium, Total Proteins and Total Antioxidant Capacity Levels of Saliva in Caries Free and Caries Active Children: An In Vivo Study     

Preethi BP  Reshma D  Anand P 《Indian journal of clinical biochemistry : IJCB》2010,25(4):425-428

The purpose of this study was to evaluate the relationship between the physicochemical properties of saliva such as flow rate, pH, buffering capacity, calcium level, total protein and total antioxidant levels in caries free and caries active children. The present study included one hundred and twenty healthy children who were divided into two groups; group I and group II comprising of age groups 7–10 and 11–14 years, respectively. Both the groups were then sub-divided equally according to gender. They were further divided into caries free and caries active with 15 children in each group. Unstimulated saliva was collected by suction method and flow rates were determined. The samples were then analyzed for pH, buffering capacity, total protein, calcium and total antioxidant capacity. The data was statistically analyzed using student t test (unpaired). The results revealed that when all these parameters were compared among the caries free and caries active children, flow rate, pH, buffering capacity were slightly reduced in caries active children, but total protein and total antioxidant capacity of saliva increased significantly in caries active children and the total calcium decreased significantly in caries active children. Within the limitation of this study, we conclude that, the physicochemical properties of saliva play a major role in the development of caries.  相似文献   

A non-linear model of sulphation of porous stones: Numerical simulations and preliminary laboratory assessments   总被引：1，自引：0，他引：1  

C. Giavarini  M.L. Santarelli  R. Natalini  F. Freddi 《Journal of Cultural Heritage》2008,9(1):14-22

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