Genetic Diversity in Selected Indian Mungbean [<i>Vigna radiata</i>(L.) Wilczek] Cultivars Using RAPD Markers

Random amplified polymorphic DNA (RAPD) markers were used to study the DNA polymorphism in Indian mungbean cultivars. A total of 60 random primers were used in the study and 33 of them generated reproducible RAPD patterns. Amplification of genomic DNA of most popular 24 Indian mungbean cultivars with these RAPD primers yielded 249 fragments that could be scored, of which 224 were polymorphic, with an average of 7.0 polymorphic fragments per primer. Number of amplified fragments with random primers ranged from 2 (OPI 9) to 17 (OPD 7). Percentage polymorphism ranged from 33% (OPX 5) to a maximum of 100% (OPX 4, OPX 6, OPX 13, OPX 15, OPX 19, OPD 5, OPD 7, OPD 20, OPI 4, OPI 6, OPI 13, OPI 14, OPI 18 and OPF 1), with an average of 90%. The Jaccard’s similarity indices based on RAPD profiles were subjected to UPGMA cluster analysis. And genotypes grouped in two major groups. Sixteen out of 24 released cultivars grouped to cluster I. This indicated the narrow genetic base in the Indian mungbean cultivars used in the study. The details of diversity analysis and possible reasons for narrow genetic base in mungbean cultivars are discussed in the present study.

Noise Exposure Levels in Basic School Environments in a City in Ghana

Basic schools that are located in heavily populated residential and commercial areas in Ghana are exposed to environmental noise that can have detrimental effects on the academic attainments of children. Limited studies have been conducted on noise level in basic schools to date in Ghana. The objective of the study was to assess noise levels in and around learning spaces in basic schools in Ghana with a focus on Kumasi. A survey employing the use of interviews and an empirical monitoring of noise levels in and around learning spaces in four selected basic schools were adopted. The study revealed that mean outdoor and indoor noise levels exceed the World Health Organisation permissible limits by 30 - 40 percent and 90 - 107 percent respectively for schools in the commercial zones and schools that are located near highways. The school that is sited in an educational environment with a setback from the highway attained mean noise levels ranging from 1.2 percent below to 3.7 percent above the permissible limits for outdoor and between 64 - 105 percent for indoor. The outcome of the study is expected to engender the design of environmental noise resilient buildings to facilitate teaching and learning in basic schools in Ghana.

在结核病实验室登记本上记录有实际意义的数据

背景:摩尔多瓦、蒙古、乌干达和津巴布韦的结核病(TB)显微镜检网络。目的:评价如何详细检查结核病实验室登记本的数据,以协助改进实验室显微镜检网络工作和结核病患者的管理。方法:对年龄、性别、痰检原因记录的完整性进行检查,分析连续痰涂片的变化模式,提供4个国家典型的随时间推移的弱阳结果的统计过程图。结果:共对128 808条记录进行分析。乌干达(6.9%)和津巴布韦(3.9%)大部分受检者没有性别信息。7.4%受检者无痰检原因。在3个涂片结果中至少1个是阳性的可疑者中,56.1%模式没有变化。统计过程控制图显示在一个历年中弱阳涂片的频率呈现明显的波动。结论:对结核病实验室登记本记录的信息进行分析,不仅能够发现实验室的优势和不足,还能显示更广范的整个病例管理系统的不足。因此结核病实验室数据能够表示在何时、何地和采取什么行动,以及随着时间推移如何监控工作。

A Pt/MnV_(2)O_(6) nanocomposite for the borohydride oxidation reaction

Problems associated with carbon support corrosion under operating fuel cell conditions require the identification of alternative supports for platinum-based nanosized electrocatalysts.Platinum supported on manganese vanadate(Pt/MnV_(2)O_(6))was prepared by microwave irradiation method and characterized using X-ray diffraction,Fourier-transform infrared spectroscopy,X-ray photoelectron spectroscopy,scanning electron microscopy with energy dispersive spectroscopy,and transmission electron microscopy.The borohydride oxidation reaction(BOR)on Pt/MnV_(2)O_(6) was studied in highly alkaline media using voltammetry,chronoamperometry,and electrochemical impedance spectroscopy.BOR electrocatalytic activity of Pt/MnV_(2)O_(6) was also compared with that of commercial Pt/C(46 wt%Pt)electrocatalyst.The apparent activation energy of BOR at Pt/MnV_(2)O_(6) was estimated to be 32 k J mol^(-1) and the order of reaction to be 0.51,indicating that borohydride hydrolysis proceeds in parallel with its oxidation.Long-term stability of Pt/MnV_(2)O_(6) under BOR typical conditions was observed.A laboratory-scale direct borohydride fuel cell assembled with a Pt/MnV_(2)O_(6) anode reached a specific power of 274 W g^(-1).Experimental results on Pt/MnV_(2)O_(6) were complemented by DFT calculations,which indicated good adherence of Pt to MnV_(2)O_(6),beneficial for electrocatalyst stability.

Impact of the Covid-19 Pandemic on Severe Childhood Malaria at the University Hospital of Brazzaville

Introduction: Malaria management has been a source of concern for health systems since the advent of the Covid-19 pandemic. Objective: To assess the impact of the Covid-19 pandemic on severe childhood malaria in Brazzaville. Material and Method: A quasi-experimental intervention/non-intervention study was carried out between March and October 2020 in the pediatric departments of the Brazzaville University Hospital. Children aged three months to 15 years hospitalized were the target population. Two groups were formed: the “intervention” group, that of children hospitalized between March and October 2020 and the “control” group that of those hospitalized between January and August 2015. The study variables were epidemiological, clinical, biological and therapeutic. Chi-square and T-Student tests were used. The impact of the intervention was assessed by the absolute risk difference. Results: Of 1392 children hospitalized, 199 (14.6%) had severe malaria with an average age of 6.94 years. These were children under 5 years old n = 95 (47.7%) of low socioeconomic level n = 145 (72.9%) seen on average after 4.6 +/? 2.4 days. Repeated convulsions (56.8%) and anemia (20.1%) were the main reasons for hospitalization. These were isolated forms (n = 146;73.4%) of which n = 84 (42.2%) neurological and n = 62 (31.2%) anemic. The lethality was 13.1%. Delayed consultation, fever, repeated convulsions, pallor, respiratory distress, sickle cell anemia, thrombocytopenia and hypoglycemia are associated with death. The risk difference for signs of severity between the two periods was 16.6 for repeated convulsions;14.3 for severe anemia. The relative risk between the two studies was 1.8. Conclusion: The increase in morbidity and mortality in severe malaria since the beginning of the Covid-19 pandemic encourages the maintenance of the balance between the management of the Covid-19 pandemic and that of other worrying health problems.

Morbidity and Mortality in Adolescents at the University Hospital of Brazzaville

Introduction: Adolescent morbidity and mortality is a health concern. Objective: To determine morbidity, identify the causes of morbi-mortality and the factors associated with adolescent mortality in Brazzaville. Patients and Methods: A retrospective, descriptive and analytical study was carried out at the Brazzaville Hospital and University Center between January 2015 and December 2016. Adolescents hospitalized in clinical services whose records were workable were included. The Epidemiological, clinical and evolutionary variables were analyzed. The statistical test used was the khi-two, the significance level set at 0.05. Results: In total, Out of 67,488 hospitalized patients, 2062 were adolescents: 3% including 891 (43.2%) boys and 1171 (56.8%) girls mean age 14.8 ± 2.92 years, seen in average 9.38 days after the onset of symptoms. Childbirth 415 (20.1%), malaria 309 cases (14.9%), major sickle cell crisis 223 (10.8%) and traumatic injuries 166 cases (8.05%) are the main causes of morbidity. One death was recorded in n = 193 (9.4%), of which n = 104 (5.0%) in the first 48. Tumors, malaria and status epilepticus are the leading causes of death. The female sex, the age between 15 and 19 years, the young age of the father, the higher level of education of the adolescent and the low socio-economic level of the parents are associated with the death. Conclusion: Adolescent morbidity is worrying and mortality is significant. It is important that policies on this issue be developed with an emphasis on the main causes of morbi-mortality, including malaria control and sex education.

第三次痰涂片检查在摩尔多瓦和乌干达结核病诊断中的有效性

地点:摩尔多瓦和乌干达分别有24和30个结核病(TB)显微镜检查实验室。目的:评价第3次痰涂片检查对确诊1例增加的TB病例所需的工作量。方法:采用实验室登记回顾性研究,通过第3次痰涂片检查确定TB患病率和增加的病例数,TB病例来源于摩尔多瓦和乌干达的疑诊患者,这2个地区可以提供用于确诊1例增加的TB病例所需的检查数量。结果:在摩尔多瓦有9%(1141/12525),在乌干达有20%(7280/36054)的疑诊病例通过至少1次阳性痰涂片确诊为TB病例。通过第3次检查得到的增加病例比例在摩尔多瓦是4%,在乌干达为3%。为了通过第3次痰涂片检查而确诊1例增加的TB病例,在摩尔多瓦需检查273张涂片(95%可信区间200—389)、乌干达需检查175张涂片(95%可信区间153—222),平均确诊时间分别为11d(8～16)和7d(6～9)。结论:在这2个国家,第3次痰涂片检查对诊断痰涂片阳性TB是无效的。

利用海藻业和酿造业产生的废料生产贵重的蚝蘑Pleurotus sajor-caju:初步研究

在由海藻业和酿造业产生的常见废料上进行了种植蚝蘑Pleurotus sajor-caju的初步实验.使用的是由这些废料和杂草各种组成的混合物.

促进步行的干预措施：系统性综述

目的评估在个体和群体中促进步行的干预措施的作用。 设计系统性综述。 数据来源通过搜索25个电子数据库、网站、文献目录和已有的系统性综述，以及通过联系专家，识别出已发表的和未发表的任一语言的报道。 综述方法系统性搜索和评价关于任何类型的干预对人们步行的影响的前后对照研究，对干预效果的大小、干预效果在不同社会组群中的分布以及干预对总的体育活动、健身、疾病危险因素、健康状况和体格的影响进行评价。 结果研究包括19项随机试验和29项非随机研究。根据人们需求进行的干预乃以大部分久坐的人或者那些有运动动机的人为目标，不论干预的履行是在个体水平（简单建议，支持步程计、使用通讯设备）、家庭水平（个体化营销）或群体水平，都能够激励人们更多地步行，尽管许多此类方法的可持续性、可推广性和临床效果还不确定。应用于工作场所、学校、社区或者地区的干预措施的有效证据通常主要来源于单独的研究或者是亚组分析。 结论在目标参与者中，最成功的干预要求要能够在短期内至少使步行量平均每周增加达30-60分钟。从提高人群健康的前景来看，目前许多的研究提供了有效果的证据而不是有效性的证据。然而，促进步行的干预能够大大提高那些最不习惯于运动的人的运动水平。