乳酸菌的筛选及生物学特性的研究

从酸奶样品中分离、筛选出5株乳酸菌,经过形态学测试及生理生化反应试验,最后确定其中2株为嗜热链球菌.     

面向信息甄别的第三方物流分包合同模型研究

通过分析合同参数间的关系,发现提供给低能力分包商的分包合同参数中既不需包含激励因子,也不需包含惩罚因子;但提供给高能力分包商的分包合同参数中至少应包含激励因子或惩罚因子,而且激励因子越高,初始支付越低,反之,惩罚因子越高,初始支付越高。     

An audit of total and free thyroxine measurements in screening for hypo and hyperthyroidism in patients using chemiluminescence immunoassay

An audit of 2509 patient specimens analyzed for both total thyroxine (TT4) and free thyroxine (FT4) by the ACS-180 automated chemiluminescence immunoassay analyzer revealed that there were 219 discrepancies (8.7% of the total). A discrepancy was defined as one analyte within its reference range and the other outside. The discrepant results were divided into 4 groups: group A: normal TT4, but decreased FT4, 101 patients (4.0%); group B: increased TT4, normal FT4, 78 patients (3.1%); group C: decreased TT4, normal FT4, 34 patients (1.4%); and group D: normal TT4, increased FT4, 6 patients (0.2%). TSH measurements were available, by a 3^rd generation chemiluminescent assay, in 142 of these patients, and were consistent with the FT4 result in 72 patients, with TT4 in 61 cases and with neither in 9 patients. The clinical diagnosis was investigated in a subgroup of 43 endocrine patients. Thirteen of the 20 endocrine patients in group A were diagnosed as hypothyroid, with a measured serum TSH, in 11 of them, of median 14.6, range 1.2 to 46.2 μlU/ml. Eleven of the 19 endocrine patients in group B were on thyroid replacement, with a measured serum TSH, in 7 of them of <0.01 μlU/ml. The audit of current laboratory practice led to a suggestion to replace the current thyroid function screening strategy of measuring both TT4 and FT4 by the combination of FT4 and TSH. The reasons for the discrepancies and the alternative strategies for screening of thyroid function are discussed.     

基于双维两阶段筛选模型的区域产业集群识别与选择研究——以江西省工业行业为例

针对区域产业集群识别与选择的难题,以江西省工业行业为例,从"行业识别"和"区域比较"两个方面构建双维两阶段筛选模型,首轮"行业识别"阶段运用因子分析法确定产业集群培育的12个工业重点行业,"区域比较"阶段根据产业规模、同行业企业数量、产业链延伸规模、行业集中度、技术创新水平、品牌建设能力等指标,运用聚类分析法对江西省区域产业集群进行动态筛选,将产业集群区分为优势型、成长型和潜力型三种类型。     

网络安全之防火墙技术

网络防火墙技术在网络信息安全中的地位日趋重要，根据网络防火墙的分类及特点，分析常用防火墙的实现方法。     

台湾的大学入学考试中的推荐甄选方式的由来

选拔人才的方式主要有两种:推荐和考试。究竟使用考试方式还是推荐方式来选拔人才,这个问题的争论由来已久。台湾在大学多元入学考试中尝试使用推荐加考试的方式选拔人才,从1994年开始实行,目前已经有12年的历史了。本文探讨台湾在大学入学考试中所使用的多元化推荐入学考试方式的由来。主要来自三个方面:中国古代科举考试制度中的推荐制;日本的大学推荐入学制;台湾曾经在大学入学考试中实行的保送生制度等。     

SIRS、SOFA和qSOFA评分在筛查脓毒症中的意义

目的分析全身炎症反应综合征(systemic inflammatory response syndrome,SIRS)评分、序贯器官功能(sequential organ failure assessment,SOFA)评分及快速序贯器官功能(quick sequential organ failure assessment,qSOFA)评分在脓毒症早期筛查中的意义。方法:选取2016年5月30日-2018年5月30日收治于我院重症医学科患者232例感染或疑似感染患者为研究对象,对其病例资料进行回顾性分析。进行SIRS评分、SOFA评分及qSOFA评分,分析三种评分方法对脓毒症患者阳性检出率及28天病死率。结果:232例感染或疑似感染患者中,SIRS组检出141例,阳性检出率60.8%,28天病死率16.3%,SOFA组检出80例,阳性检出率34.5%,28天病死率22.5%,qSOFA组检出42例,阳性检出率18.1%,28天病死率38%。结论:SOFA评分和qSOFA评分能对感染性患者预后能做出较为准确的评估,qSOFA评分最优。     

Education and employment status: a test of the strong screening hypothesis in Italy

We apply the comparative techniques originated by Wolpin, K.I. (1977, Education and screening, American Economic Review, 67, 949–958) and Psacharopoulos (1979, On the weak versus the strong version of the screening hypothesis, Economics Letters, 4, 181–185) to discriminate between the ‘weak' and ‘strong' screening hypotheses. Controlling for sample selection, we find evidence for weak but not strong screening in the Italian labour market. [JEL J3, J24, J41]     

Examining the predictive validity of behavior screeners across measures and respondents

Through this study we compared different informants and different behavior screening tools that are available to screen for behavioral and emotional risk. We examined screening results from 100 students from a high school with a high achiever's magnet program in the Southeastern United States (school demographics: 71% female and 79% black, non-Hispanic). This school conducted behavior screening using both teacher-report via the Student Risk Screening Scale, Internalizing/Externalizing (SRSS-IE) and student report via the Strengths and Difficulties Questionnaire (SDQ). Nonparametric correlation tests were conducted between the SRSS-IE and SDQ externalizing and internalizing scores. Generalized linear regression models were created based on the data (demographics, internalizing, and externalizing scores on both screening tools) to model the two count outcomes (office discipline referrals [ODRs] and absences). Diagnostic accuracy metrics were generated from the scores on both the SRSS-IE and SDQ with the outcome measures (ODRs and absences). Externalizing scores on both screening tools had statistically significant low correlations. The ODR model contained two predictors: externalizing score on the SRSS-IE and internalizing score on the SDQ, while the absence model contained grade and the externalizing score on the SDQ. The highest accuracy and agreement values were seen between students with elevated risks on both screening measures and ODRs. The results confirmed that teacher and student reporting, as well as different screening tools, will result in some different students being identified. The choice of informant and screening tools should be dependent on the needs and resources of the school.     

纤维素分解菌的分离、筛选及其环境适应性初步研究

以滤纸平板和羧甲基纤维素钠培养基为基础培养基,从采集的样品中筛选出具有分解纤维素能力的38株菌株。采用纤维素刚果红培养基进行粗选,得到10株透明圈较大的菌株。将这10株菌株进行液体发酵培养,测定其酶活力,得到4株分解纤维素能力较强的菌株。对这4株菌株进行碳源、温度、pH值的适应性研究。结果发现,真菌3和真菌6的适应性都比较好。