消渴健脾胶囊对2型糖尿病小鼠降血糖作用研究

为研究消渴健脾胶囊对2型糖尿病小鼠的降血糖作用,取75只昆明种雄性小鼠,除正常对照组10只外,其余小鼠腹腔注射链脲佐菌素建立2型糖尿病小鼠模型,将造模成功的糖尿病小鼠随机分为模型组,阳性组(盐酸二甲双胍150.00 mg·kg~(-1)),消渴健脾胶囊低(238.88 mg·kg~(-1))、中(477.75 mg·kg~(-1))、高(955.50 mg·kg~(-1))剂量组,每组10只,正常对照组和模型组给予0.1 mL·(10 g体重)~(-1)蒸馏水,连续给药28 d后,测定小鼠体重、空腹血糖(FBG)值、糖耐量(GT)、糖化血清蛋白(GSP)水平及血清胰岛素(INS)水平。结果表明,与模型组比较,给药28 d后,消渴健脾胶囊各剂量组小鼠体重显著增加,差异具有统计学意义(P0.05);消渴健脾胶囊各剂量组小鼠FBG值显著降低,差异具有统计学意义(P0.05或P0.01);消渴健脾胶囊中、高剂量组小鼠GT显著降低,差异具有统计学意义(P0.05或P0.01);消渴健脾胶囊各剂量组小鼠GSP水平显著降低,差异具有统计学意义(P0.05或P0.01);消渴健脾胶囊高剂量组小鼠INS水平显著升高,差异具有统计学意义(P0.05)。消渴健脾胶囊对链脲佐菌素所致2型糖尿病小鼠有一定的治疗作用。     

釉面分相对无铅CuO-MnO2系金属光泽釉的影响

以钙系生料釉为基础,引入结晶剂CuO、MnO₂制备无铅CuO-MnO₂系金属光泽釉;结合XRD、SEM-EDS进行物相组成定性分析和显微结构表征,系统探究外加TiO₂、V₂O₅以及玻璃粉对金属光泽釉釉面分相的影响。研究表明:一定量的TiO₂、V₂O₅引入能有效促进釉面的分相,将玻璃粉部分替换基础釉中的钾长石能使得釉熔体的高温粘度降低,并进一步加剧釉面分相,促进CuMn₂O₄铜锰尖晶石在釉层表面的析出和富集;当TiO₂引入量为2%,V₂O₅引入量为1%,玻璃粉引入量为25%(同为质量分数)时,金属光泽釉釉面效果最佳。     

一种基于国产密码算法的身份认证方案

提出了一种基于国产密码算法的身份认证方案。方案中的关键数据用SM2加密保护,引入随机数保证发送中间认证信息的时间具有无规律性。方案克服了传统方案存在的常见安全漏洞,可以更有效地抵御窃取信息攻击和劫取连接攻击,并保留了传统方案的安全特性,可以适用于安全性需求较高的场合。     

Recent progress of green sorbents-based technologies for low concentration CO2 capture

The increased concentration of CO₂ due to continuous breathing and no discharge of human beings in the manned closed space, like spacecraft and submarines, can be a threat to health and safety. Effective removal of low concentration CO₂ from the manned closed space is essential to meet the requirements of long-term space or deep-sea exploration, which is an international frontier and trend. Ionic liquids (ILs), as a widespread and green solvent, already showed its excellent performance on CO₂ capture and absorption, indicating its potential application in low concentration CO₂ capture. In this review, we first summarized the current methods and strategies for direct capture from low concentration CO₂ in both the atmosphere and manned closed spaces. Then, the multi-scale simulation methods of CO₂ capture by ionic liquids are described in detail, including screening ionic liquids by COSMO-RS methods, capture mechanism by density functional theory and molecular dynamics simulation, and absorption process by computational fluid dynamics simulation. Lastly, some typical IL-based green technologies for low concentration CO₂ capture, such as functionalized ILs, co-solvent systems with ILs, and supported materials based on ILs, are introduced, and analyzed the subtle possibility in manned closed spaces. Finally, we look forward to the technology and development of low concentration CO₂ capture, which can meet the needs of human survival in closed space and proposed that supported materials with ionic liquids have great advantages and infinite possibilities in the vital area.     

氧化钴及其复合材料在储能领域的研究进展

储能设备能解决清洁能源利用、转换和储存等关键问题,广泛应用于电动汽车、风力发电和移动通讯等领域,促进了储能材料的发展。氧化钴由于其较高的理论容量而成为研究热点。综述了氧化钴及其复合材料在储能领域的最新研究进展,对各种材料的制备方法及电化学性能进行归纳和探讨,并对其未来的发展前景作了展望。     

1-苯乙基-1H-咪唑的合成工艺研究

本文以(2-溴乙基)-苯、咪唑为原料,进行分子间缩合反应,生成1-苯乙基-1H咪唑,使用HPLC跟踪反应,1H NMR确定产物结构,最终产率54. 8%。该工艺无需催化剂,反应条件温和,产率品质稳定。     

组合桨搅拌槽内高黏流体混合特性的数值模拟

利用计算流体力学数值模拟方法,对直段桨为双螺带式和Paravisc式以及底桨为锚式和变径双螺带式的组合桨功率和混合时间进行了研究,并对其中最优桨型进行了放大规律的探索。通过数值模拟得到了4种组合桨中各单桨及组合桨的功率准数关联式,提出组合桨中各桨之间功率上的反作用关系。在10种组合桨中,Paravisc-锚式组合桨达到完全混合时所转圈数最少,且在相同转速下量纲一剪切量较大,混合特性最优,将其从体积为100 L的搅拌槽内放大至200 L和500 L搅拌槽中,发现其符合桨端线速度的放大准则。文中对各桨型的功率特性、混合特性和放大规律的分析,可为工业设计和优化高黏度流体组合桨参数提供重要参考。