显齿蛇葡萄多糖的提取工艺及含量研究

采用热水浸提法提取显齿蛇葡萄多糖,用蒽酮-硫酸比色法测定糖含量,通过单因素试验研究提取温度、次数、时间及液料比对糖含量的影响,并采用L9（3^4）正交试验对提取工艺进行优化．以最佳工艺提取不同时期显齿蛇葡萄茎、叶的多糖并测定其含量．结果表明,对多糖含量的影响因素由大到小依次为提取温度、次数、时间和液料比．显齿蛇葡萄多糖...     

桑树DNJ提取、纯化和检测的研究进展

1-脱氧野尻霉素(1-deoxynojirimycin,DNJ)是存在于桑树中的一种多羟基哌啶生物碱,因其通过抑制α-葡萄糖苷酶活性,进而具有降血糖、抗病毒、抗肿瘤等生理活性和药理活性.DNJ广泛存在于桑树的各种组织中,不同桑树类型和品种中DNJ含量不同,采取的每一种提取、测定方法均具有选择性和特异性,只适用于某种类型或某种桑树品种样品的纯化和检测.同时,DNJ在桑树体内的含量较低,而且桑树体内其他次生代谢物质的干扰增加了DNJ提取和测定的难度.因此,目前文献中报道的DNJ提取、分离纯化和检测方法较多.针对已报道的DNJ的提取、分离纯化和检测方法,综述了近年来DNJ研究方面的最新进展,为更好利用和开发DNJ制品,为DNJ的工业化生产提供参考和借鉴.     

小花苗血液生理生化指标测定及分析

小花苗属苗族花苗的小花支系,身高较矮,祖祖辈辈生活在高寒山区。为全面了解小花苗的体质体征及健康状况,测定了水城县南开乡20~60岁成年小花苗112人的血液生理指标和生化指标各26项。结果显示:除平均血红蛋白浓度和葡萄糖含量低于参考值范围外,其余指标无论男女,均在参考值范围内。     

Self‐determination of young children with intellectual disability: understanding parents' perspectives

Self‐determination is considered to be a basic human right which, to develop, demands contextual opportunities as well as individual competencies. For people with intellectual and developmental disabilities, the family is the natural support environment in the task of increasing control over their own lives. There is little, however, that has been published in Spain on the needs and strengths of families in this regard. This article presents a study carried out in Spain on the knowledge, attitudes and strategies that a sample group of parents (N = 201) have regarding self‐determination. An analysis of the data gathered highlights the need for intervention proposals to prepare parents to further their children's self‐determination, through collaborative partnerships and through cognitive restructuring.     

比色法测定洗衣粉中总五氧化二磷的含量

目的：建立紫外可见分光光度计测定磷含量的方法。方法：绘制标准曲线,通过标准曲线定量。结果：该方法灵敏度高、操作简单、精密度较好、方法回收率高。标准曲线的线性回归方程A=0.0026m+0.0061,R2=0.9997线性关系好。结论：研究为洗衣粉中总五氧化二磷的测定提供了参考依据。     

HPLC 法测定舒泌通胶囊中绿原酸和蒙花苷的含量

建立了 HPLC 法同时测定舒泌通胶囊中绿原酸和蒙花苷的质量分数,采用 SunfireTM-C18柱（4．6 mm ×250 mm,5μm）,柱温为30℃,流动相 A 为甲醇、B 为0．5％冰醋酸,梯度洗脱,流速为1．0 mL／min,检测波长为328 nm．结果表明,二者的线性范围分别为1．0804～216．0804μg／mL 和1．0804～81．7200μg／mL．平均回收率分别为101．0％和9．3％,RSD 分别为3．4％和3．3％（n ＝9）．该方法准确、可靠,具有良好的重复性和稳定性,可用于舒泌通胶囊中绿原酸和蒙苷花的质量分数测定．     

大气中F与ClNO_2/ClONO反应机理的理论研究

用B3LYP理论研究了大气中F与硝酰氯(ClNO2)及顺/反亚硝酸氯(ClONO)分子反应的机理.在6-311++G**的基组水平上,优化得到了反应物、过渡态、中间体和产物的几何构型,通过振动分析对过渡态和中间体构型进行确认.计算结果表明:F与ClONO分子的反应有三种不同的反应机制,而对ClNO2分子的进攻有两种不同的反应方式.其中F与cis-ClONO发生的直接Cl提取反应是主反应通道,产物P1(NO2+ClF)为主要产物.     

实施快乐体育教学中对培养学生意志品质的思考

采用文献资料法、观察法和专家访谈法,对当前学校体育实施快乐体育教学的现状进行分析。认为在实施快乐体育教学中不仅要让学生快乐,而且应该在快乐中培养学生的意志品质。     

Using 21st century video prompting technology to facilitate the independence of individuals with intellectual and developmental disabilities

Barriers in acquiring, maintaining, and generalizing daily living skills are factors that contribute to discrepancies in independent living outcomes among transition age youth and young adults with intellectual and developmental disabilities (IDD). Acquisition and generalization of daily living skills empowers transition age youth and young adults with disabilities to meet their own needs with minimal reliance on others. Infusing the use of technology as a self‐prompting device facilitates the acquisition of tasks that may not be otherwise attainable. In this study, self‐directed video prompting on an iPad with the My Pictures Talk application was used to help young adults with IDD in a postsecondary program acquire daily living skills in a single subject, multiple probe across subjects design. The effects of the intervention on generalization to tasks that were one, two, and three components different were also assessed. Results demonstrated a functional relationship between the introduction of the intervention and improvement in skill performance.     

关于技术资产评估中折现率构成及变化的研究

科学地评估技术资产的价值,对于确保技术资产交易的公平性、促进我国高新技术发展具有十分重要的意义。在运用收益法对技术资产进行评估时,折现率取值的很小差异会对评估结果产生很大影响,而如何确定技术资产的折现率则属于我国资产评估的前沿问题。在此,对技术资产折现率的研究包括：1)折现率实质、影响因素与选取缺陷;2)折现率的基本构成及其变化;3)折现率及其变化值的确定。