几种添加剂对香蕉泥中山梨酸钾、苯甲酸钠防腐增效作用

试验研究了柠檬酸、ＥＤＴＡ、抗坏血酸、氯化钙对山梨酸钾、苯甲酸钠保存香蕉泥效果的影响，结果表明：以０．０４％～０．０８％的山梨酸钾作香蕉泥的防腐剂时，添加０．２％～０．３％柠檬酸或０．０１％～０．０３％ＥＤＴＡ或０．０２％～０．０６％抗坏血酸对防腐效果均有显著增效作用。以０．０６％～０．０８％的苯甲酸钠作防腐剂时，添加０．０６％抗坏血酸对防腐效果有显著的增效作用。     

丁酸钠对肾结石大鼠肠道菌群及炎症因子的影响

为探讨丁酸钠对大鼠模型的肾草酸钙结晶数量、肠道菌群及炎症相关因子的影响,探究其干预肾草酸钙结石形成的可能机制,以乙二醇诱导大鼠成肾草酸钙结石模型,并予丁酸钠干预,对肾脏进行病理组织学检测,并采用qPCR检测肠道菌群特定菌属（Enterococcus、E. coli、Bacteroides fragilis、Bifidobacterium、Faecalibacterium prausnitzii、Lactobacillus、Roseburia spp.、Bacteroides、Firmicutes）数量,以及与炎症相关的脂多糖受体TLR4、促炎细胞因子IL-1β、NF-κB p50的mRNA相对表达量.结果表明,与肾草酸钙结石组相比,丁酸钠组的肾草酸钙结晶减少（P < 0.05）;Enterococcus、Bacteroides fragilis、E. coli相对丰度显著降低（P < 0.05）,其它菌属的丰度无显著变化（P > 0.05）; IL-1β、NF-κB p50的mRNA表达量显著降低（P < 0.05）, TLR4的mRNA表达量无显著变化（P > 0.05）.因此,丁酸钠可以减少E. coli、Enterococcus、Bacteroides fragilis的丰度,抑制结肠炎症相关因子IL-1β、NF-κB p50的mRNA表达,减少大鼠肾草酸钙结石的形成.     

水溶型CdSe量子点的制备及与Schiff碱的相互作用拆分头孢氨苄对映体

以绿色无毒、生物相容性好的羧甲基纤维素钠为稳定剂,通过简单的过程成功地在水相中制备了CdSe量子点(QDs).用TEM、XRD、XPS表征的结果表明：所制备的CdSe量子点近似于单分散,平均粒径为2.1 nm. UV-Vis和荧光 (PL) 光谱表明：控制反应物Se前躯体的量可有效调控量子点粒径,实现量子点在480～560 nm荧光可调,且量子点具有窄且对称的荧光光谱.量子点与Schiff碱相互作用表明：Schiff碱在一定范围内能有效增强量子点荧光,过量的Schiff碱却能淬灭量子点的荧光.     

蒙药配合玻璃酸钠治疗膝关节骨性关节炎56例观察

目的:探讨蒙药配合玻璃酸钠治疗膝关节骨性关节炎的疗效.方法:对56例膝关节骨性关节炎采用蒙药珍宝丸、风湿二十五味丸、嘎迪五味丸治疗的基础上配合玻璃酸钠关节腔内注射治疗.结果:56例中,临床治愈5例(8.93%),显效45例(80.35%),有效5例(8.93%),无效1例(1.78%),总有效率98.21%.结论:蒙药口服配合玻璃酸钠关节腔内注射治疗膝关节骨性关节炎能起到标本兼治的作用,疗效显著.     

连二亚硫酸钠分解率的研究

本文研究了连二亚硫酸钠在碱性溶液中绝氧条件下的分解率。实验结果指出，连二亚硫酸钠的分解率随着温度、停留时间、氢氧比钠和连二亚硫酸钠浓度的增加而增大，其中温度和停留时间是影响分解率的主要因素。在碱性溶液中，连二亚硫酸钠的分解反应级数为１．５级。     

Enhanced electrochemical stability of carbon-coated antimony nanoparticles with sodium alginate binder for sodium-ion batteries

The poor cycling stability of antimony during a repeated sodium ion insertion and desertion process is the key issue, which leads to an unsatisfactory application as an anode material in a sodium-ion battery. Addressed at this, we report a facile two-step method to coat antimony nanoparticles with an ultrathin carbon layer of few nanometers (denoted Sb@C NPs) for sodium-ion battery anode application. This carbon layer could buffer the volume change of antimony in the charge-discharge process and improve the battery cycle performance. Meanwhile, this carbon coating could also enhance the interfacial stability by firmly connecting the sodium alginate binders through its oxygen-rich surface. Benefitted from these advantages, an improved initial discharge capacity (788.5?mA?h?g^?1) and cycling stability capacity (553?mA?h?g^?1 after 50 times cycle) have been obtained in a battery using Sb@C NPs as anode materials at 50?mA?g^?1.     

硫酸氢钠催化合成缩醛（酮）

以硫酸氢钠作催化剂,由苯甲醛、环己酮、乙酰乙酸乙酯与乙二醇缩合生成3种缩醛（酮）,系统地研究了醛（酮）与醇物质的量比、催化剂用量、反应时间等诸因素对产品收率的影响。研究得出最佳反应条件是：乙二醇与醛（酮）的物质的量比为1．5：1,催化剂用量占反应物总量的1％,反应时间为1．5h,在此反应条件下,缩醛（酮）的收率达66．3％～84．4％。     

Hypertonic saline resuscitation reduces apoptosis of intestinal mucosa in a rat model of hemorrhagic shock

Objective： To investigate the early effects of hypertonic and isotonic saline solutions on apoptosis of intestinal mucosa in rats with hemorrhagic shock. Methods： A model of rat with severe hemorrhagic shock was established in 21 Sprague-Dawley （SD） rats. The rats were randomly divided into the sham group, normal saline resuscitation （NS） group, and hypertonic saline resuscitation （HTS） group, with 7 in each group. We detected and compared the apoptosis in small intestinal mucosa of rats after hemorrhagic shock and resuscitation by terminal deoxynucleotidyl transferase dUTP nick end labelling （TUNEL）, FITC （fluorescein-iso-thiocyanate）-Annexin V/PI （propidium iodide） double staining method, and flow cytometry. Results： In the early stage of hemorrhagic shock and resuscitation, marked apoptosis of small intestinal mucosa in the rats of both NS and HTS groups was observed. The numbers of apoptotic cells in these two groups were significantly greater than that in the sham group （P〈0.01）. In the HTS group, the apoptic cells significantly decreased, compared with the NS group （P〈0.01）. Conclusion： In this rat model of severe hemorrhagic shock, the HTS resuscitation of small volume is more effective than the NS resuscitation in reducing apoptosis of intestinal mucosa in rats, which may improve the prognosis of trauma.     

用NaNTu消除稀硫酸和硫化钠鉴定铅时Ag^＋和Hg2^2＋的干扰

本文提出了稀硫酸和硫化钠试法鉴定铅时,用N—烯丙基—N′—(对苯磺酸钠)硫脲消除银和亚汞的干扰.与传统的稀盐酸法相比,不会造成铅的损失,操作更方便.     

Hg（Ⅱ）－TMK－十二烷基磺酸钠增溶分光光度法测定Hg（Ⅱ）的研究及应用

本文研究了Ｈｇ（Ⅱ）－ＴＭＫ－十二烷基磺酸钠体系的分光光度特性和最适宜的显色条件。在ＰＨ值为３．５的ＨＡｃ－ＮａＡｃ缓冲溶液中。显色体系在５４０ｎｍ处有最大吸收。其摩尔吸光系数ε（５４０）为１．４６×１０￣５ｍｏｌ（－１）·ｃｍ（－１）·Ｌ．测得配合物组成为Ｈｇ（Ⅱ）：ＴＭＫ＝１：４．Ｈｇ（Ⅱ）在０～２５μｇ／２５ｍｌ范围内服从比耳定律。