RSS技术及其在信息服务系统中的应用研究

介绍RSS的基本概念,分析RSS的工作原理及RSS技术体系,对在网络信息服务系统中实现RSS功能的关键技术进行了研究,并提出了相关的解决方案.     

Effect of malt pretreatment on phytic acid and in vitro protein digestibility of sorghum flour

Sorghum seeds of cultivar Wad Ahemed (phytate: 2.7 mg/g, tannin: 0.96% and 2 h pepsin digestion: 18%) were germinated for three days to obtain 1-, 2- and 3- days old sorghum malts. Sorghum malt was added in concentrations of 1, 2.5, 5, 7.5 or 10% to sorghum flour. The mixtures were incubated with shaking for 0, 30, 60, 90 or 120 min. Phytic acid and in vitro protein digestibility were assayed for all treatments. The results revealed that phytate content was significantly reduced. The 10% 3-day-old malt after 120 min incubation, reduced the phytate content by 83%. The in vitro protein digestibility (IVPD) was significantly improved as a result of malt pretreatment. The rate of reduction of phytate content and the rate of increment in IVPD increased with time of incubation, age and concentration of the malt.     

基于模糊评价的大学生社会适应能力评价研究

在日益加剧的社会竞争和纷繁莫测的社会环境下,信息更新速度不断加快,社会变革愈加剧烈,社会对大学生适应其运行发展的要求更为迫切。通过构建大学生社会适应能力的指标体系,采用模糊评价理论,对个体数据进行分析,为大学生社会适应能力的个性化培养提供依据。     

海洋产几丁质酶厦门加西利亚单胞菌Chi34的筛选、鉴定及酶学性质分析

目的：海洋是自然界中含几丁质最多的生态系统,孵育了大量可降解利用几丁质的微生物,因此利用海洋微生物几丁质酶降解几丁质,是获得高附加值几丁寡糖的重要方法。本试验以连云港海域海泥为样品,以期筛选获得稳定的产几丁质酶菌株。方法：利用平板筛选法和摇瓶发酵复筛法筛选获得产几丁质酶菌株Chi34,利用形态学分析和16S r DNA序列分析对菌株进行鉴定,同时还研究了温度、pH、金属离子、EDTA及SDS等因素对Chi34几丁质酶的影响,最后通过TLC实验分析了Chi34几丁质酶降解几丁质胶体的产物。结果：菌株Chi34鉴定为厦门加西利亚单胞菌(Gallaecimonas xiamenensis),其几丁质酶酶活力为0.631 U/m L,最适反应温度为35℃,最适反应p H为6.0,Na₊、Ca₂₊、Mn₂₊、K₊对Chi34几丁质酶具有显著的激活作用,Cu₂₊、Fe₃₊、Ba₂₊、Zn₂₊、Cd₂₊、...     

基于宏基因组技术分析产褥期新生儿肠道菌群变化的研究

目的 研究影响产褥期新生儿肠道微生物群的建立过程中的因素。方法 采用宏基因组技术,对不同喂养方式、出生方式和性别的4名在月子会所中产褥期新生儿肠道微生物生态系统形成的过程进行研究。结果 新生儿肠道菌群多样性均明显增加,满月时新生儿肠道菌群中存在显著差异的纲为拟杆菌和放线菌（P<0.05）。母乳与婴儿配方奶粉间隔喂养的混合喂养的新生儿肠道中乳酸杆菌比例显著低于母乳喂养方式的新生儿。母乳喂养的新生儿肠道菌群多样性较低,而混合喂养的新生儿菌群结构则多样性高,拟杆菌、肠杆菌、梭菌的丰度高于母乳喂养的新生儿。在纲水平上,母乳喂养与混合喂养组肠道菌群中存在显著差异的菌为杆菌。满月时女婴肠道菌群物种组成与男婴相比更丰富、分布均匀度更高。结论 喂养方式、分娩方式、性别均在不同程度上影响产褥期新生儿肠道微生物的构成。     

Enhanced treatment for cerebral ischemia-reperfusion injury of puerarin loading liposomes through neutrophils-mediated targeted delivery

Nano Research - The recovery of blood circulation following cerebral infarction-associated thrombolysis brings new damage to the brain, which is cerebral ischemia-reperfusion injury (CIRI)....     

Aggregation profile of 11S, 7S and 2S coagulated with GDL

The aggregation process of the proteins coagulated by glucono-δ-lactone (GDL) was monitored by using atomic force microscopy (AFM). Solutions of 11S, 7S and 2S proteins, after heating at 100 °C for 10 min, were mixed with GDL and formed aggregates with different aggregation profiles. When the three protein solutions (11S, 7S and 2S) were mixed with GDL and deposited onto the mica for 1, 2 and 4 min, 11S proteins formed the largest clusters of aggregates, 2S proteins formed smaller clusters of aggregates than 11S but bigger clusters of aggregates than 7S and 7S proteins formed the smallest cluster of aggregates. It was also found, by turbidity measurement, that when GDL was added to the three protein fractions, the level of turbidity was in the order of 11S > 2S > 7S. Both these results showed that, when GDL was added to the three protein fractions, the speed of aggregation was in the order of 11S > 2S > 7S.     

抗菌剂与EVA抗菌复合材料的研究进展

综述了EVA抗菌复合材料的研究进展,抗菌剂主要包括无机抗菌剂、有机抗菌剂、天然抗菌剂,并指出抗菌剂的发展方向。     

认知无线Mesh网络中基于协作学习自动机的自适应信道分配算法*

在认知无线Mesh网络多信道环境中处理繁重的数据业务是一项具有挑战性的任务。为了解决这个问题,提出了一种新的基于协作学习自动机(Learning automata,LA)的自适应信道分配算法(CLACAA)。在所提出的算法中,LA被部署在邻近的互相协作的次用户上。首先,为了LA能自适应地更新其动作概率向量,设计了一种线性奖赏无为方案;其次,定义了一种新的信道利用率因子用于信道选择,以解决信道冲突发生的问题;最后,给出了当信道由于大量输入请求而过载时的信道切换方案。实验仿真结果表明,该算法在提升网络吞吐量和数据传输率,降低切换时延和缓冲时延上有明显的优势。     

Evaluation of Swedish ventilation systems

It is of great importance to the indoor air quality that the ventilation systems, not only directly after taken into operation, operate as they were designed and according to the regulations. The objective of the paper is to show how well the systems satisfy the national regulations after being in operation for several years and what their main defects are. The requirement for a system to pass the test is that the ventilation performance conforms to the regulations that applied when the system was brought into operation. Of the 5625 evaluated systems, 34% passed the test.