1,361 research outputs found
Institutional commitments, integration and student persistence in the NCV Safety in Society at a TVET College in the Western Cape
Magister Educationis (Adult Learning and Global Change) - MEd(AL)Student dropout, certification and retention rate has played a pivotal role for academic institutions globally. There are various factors that affect student persistence which inevitably leads to a student’s failure to graduate. These factors may also result in voluntary withdrawal from institutions which could impact on the status and funding of tertiary institutions. To deal with such critical issues, there is a need to understand the reasons for the decline in student retention and the factors that influence goals and student departure. The aim of the current study was to explore the factors that may or may not contribute to persistence, which eventually has an influence on the retention rate. In the current qualitative study, Tinto’s longitudinal model was comprehensively explored. Therefore, the current study was located within Tinto’s longitudinal model of student departure. The researcher was prompted to explore the factors that influence student goals,
institutional commitments, social and academic integration and persistence. The South African government expected that the role of the TVET colleges would become the cornerstone of the skills development landscape. According to the Department of Higher Education and Training (DHET, 2013b), it was estimated that the growth in the sector would escalate as follows: the projection of 345 000 students in 2010, 630 000 students in 2013. The total projection for 2030 was that 2.5 million students would be certified (DHET, 2013b). Unfortunately, the 2030 projection has been adversely affected by the poorly performing institution and the high dropout rate. (DHET, 2013b) Therefore, the setting for the research was a Technical Vocational College in Cape Town which offers the National Certificate Vocational NCV. The single institutional study linking academic integration, goal influencers, institutional commitments social and academic integration and persistence was based in a college in Cape Town. Thus the study has an overarching research question and three sub-questions. The college was selected
conveniently and the researcher purposively selected the participants. A total of twenty participants (20) were interviewed after providing assent and consent. The qualitative design utilized in the current study allowed the researcher to identify themes. Therefore, thematic
analysis was employed in the data analysis section. The researcher is currently an insider in this sector. The unique experience and academic background of the researcher has afforded the opportunity to ethically gain access to past results in the TVET, specifically, in a NCV
programme at a Cape Town College
Complete Plastid Genome Sequence of the Chickpea (Cicer Arietinum) and the Phylogenetic Distribution of rps12 and clpP Intron Losses Among Legumes (Leguminosae)
Chickpea (Cicer arietinum, Leguminosae), an important grain legume, is widely used for food and fodder throughout the world. We sequenced the complete plastid genome of chickpea, which is 125,319 bp in size, and contains only one copy of the inverted repeat (IR). The genome encodes 108 genes, including 4 rRNAs, 29 tRNAs, and 75 proteins. The genes rps16, infA, and ycf4 are absent in the chickpea plastid genome, and ndhB has an internal stop codon in the 5′exon, similar to other legumes. Two genes have lost their introns, one in the 3′exon of the transpliced gene rps12, and the one between exons 1 and 2 of clpP; this represents the first documented case of the loss of introns from both of these genes in the same plastid genome. An extensive phylogenetic survey of these intron losses was performed on 302 taxa across legumes and the related family Polygalaceae. The clpP intron has been lost exclusively in taxa from the temperate “IR-lacking clade” (IRLC), whereas the rps12 intron has been lost in most members of the IRLC (with the exception of Wisteria, Callerya, Afgekia, and certain species of Millettia, which represent the earliest diverging lineages of this clade), and in the tribe Desmodieae, which is closely related to the tribes Phaseoleae and Psoraleeae. Data provided here suggest that the loss of the rps12 intron occurred after the loss of the IR. The two new genomic changes identified in the present study provide additional support of the monophyly of the IR-loss clade, and resolution of the pattern of the earliest-branching lineages in this clade. The availability of the complete chickpea plastid genome sequence also provides valuable information on intergenic spacer regions among legumes and endogenous regulatory sequences for plastid genetic engineering
The complete chloroplast genome sequence of Citrus sinensis (L.) Osbeck var 'Ridge Pineapple': organization and phylogenetic relationships to other angiosperms
BACKGROUND: The production of Citrus, the largest fruit crop of international economic value, has recently been imperiled due to the introduction of the bacterial disease Citrus canker. No significant improvements have been made to combat this disease by plant breeding and nuclear transgenic approaches. Chloroplast genetic engineering has a number of advantages over nuclear transformation; it not only increases transgene expression but also facilitates transgene containment, which is one of the major impediments for development of transgenic trees. We have sequenced the Citrus chloroplast genome to facilitate genetic improvement of this crop and to assess phylogenetic relationships among major lineages of angiosperms. RESULTS: The complete chloroplast genome sequence of Citrus sinensis is 160,129 bp in length, and contains 133 genes (89 protein-coding, 4 rRNAs and 30 distinct tRNAs). Genome organization is very similar to the inferred ancestral angiosperm chloroplast genome. However, in Citrus the infA gene is absent. The inverted repeat region has expanded to duplicate rps19 and the first 84 amino acids of rpl22. The rpl22 gene in the IRb region has a nonsense mutation resulting in 9 stop codons. This was confirmed by PCR amplification and sequencing using primers that flank the IR/LSC boundaries. Repeat analysis identified 29 direct and inverted repeats 30 bp or longer with a sequence identity ≥ 90%. Comparison of protein-coding sequences with expressed sequence tags revealed six putative RNA edits, five of which resulted in non-synonymous modifications in petL, psbH, ycf2 and ndhA. Phylogenetic analyses using maximum parsimony (MP) and maximum likelihood (ML) methods of a dataset composed of 61 protein-coding genes for 30 taxa provide strong support for the monophyly of several major clades of angiosperms, including monocots, eudicots, rosids and asterids. The MP and ML trees are incongruent in three areas: the position of Amborella and Nymphaeales, relationship of the magnoliid genus Calycanthus, and the monophyly of the eurosid I clade. Both MP and ML trees provide strong support for the monophyly of eurosids II and for the placement of Citrus (Sapindales) sister to a clade including the Malvales/Brassicales. CONCLUSION: This is the first complete chloroplast genome sequence for a member of the Rutaceae and Sapindales. Expansion of the inverted repeat region to include rps19 and part of rpl22 and presence of two truncated copies of rpl22 is unusual among sequenced chloroplast genomes. Availability of a complete Citrus chloroplast genome sequence provides valuable information on intergenic spacer regions and endogenous regulatory sequences for chloroplast genetic engineering. Phylogenetic analyses resolve relationships among several major clades of angiosperms and provide strong support for the monophyly of the eurosid II clade and the position of the Sapindales sister to the Brassicales/Malvales
Insulin-Associated Weight Gain in Type 2 Diabetes Is Associated With Increases in Sedentary Behavior.
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Phylogenetic Analyses of Vitis (Vitaceae) Based on Complete Chloroplast Genome Sequences: Effects of Taxon Sampling and Phylogenetic Methods on Resolving Relationships Among Rosids
Background The Vitaceae (grape) is an economically important family of angiosperms whose phylogenetic placement is currently unresolved. Recent phylogenetic analyses based on one to several genes have suggested several alternative placements of this family, including sister to Caryophyllales, asterids, Saxifragales, Dilleniaceae or to rest of rosids, though support for these different results has been weak. There has been a recent interest in using complete chloroplast genome sequences for resolving phylogenetic relationships among angiosperms. These studies have clarified relationships among several major lineages but they have also emphasized the importance of taxon sampling and the effects of different phylogenetic methods for obtaining accurate phylogenies. We sequenced the complete chloroplast genome of Vitis vinifera and used these data to assess relationships among 27 angiosperms, including nine taxa of rosids. Results The Vitis vinifera chloroplast genome is 160,928 bp in length, including a pair of inverted repeats of 26,358 bp that are separated by small and large single copy regions of 19,065 bp and 89,147 bp, respectively. The gene content and order of Vitis is identical to many other unrearranged angiosperm chloroplast genomes, including tobacco. Phylogenetic analyses using maximum parsimony and maximum likelihood were performed on DNA sequences of 61 protein-coding genes for two datasets with 28 or 29 taxa, including eight or nine taxa from four of the seven currently recognized major clades of rosids. Parsimony and likelihood phylogenies of both data sets provide strong support for the placement of Vitaceae as sister to the remaining rosids. However, the position of the Myrtales and support for the monophyly of the eurosid I clade differs between the two data sets and the two methods of analysis. In parsimony analyses, the inclusion of Gossypium is necessary to obtain trees that support the monophyly of the eurosid I clade. However, maximum likelihood analyses place Cucumis as sister to the Myrtales and therefore do not support the monophyly of the eurosid I clade. Conclusion Phylogenies based on DNA sequences from complete chloroplast genome sequences provide strong support for the position of the Vitaceae as the earliest diverging lineage of rosids. Our phylogenetic analyses support recent assertions that inadequate taxon sampling and incorrect model specification for concatenated multi-gene data sets can mislead phylogenetic inferences when using whole chloroplast genomes for phylogeny reconstruction
CLINICAL CHARACTERISTIC OF COVID-19 IN ELDERLY AND MIDDLE-AGE ADULT IN DR MOHAMMAD SOEWANDHI GENERAL HOSPITAL
Introduction: The different characteristics of the elderly and young people may provide different characteristics of COVID-19. This research aim is to provide information on the characteristics of COVID-19 patients, especially elderly patients. Aim: To analyzed comparisson of clinical characteristic COVID-19 in elderly and young age patients. Method: This study is a retrospective observational study with a cross-sectional approach in COVID-19 patients hospitalized at Soewandi General Hospital from May 1st 2020 until November 31th 2020. This study compared the characteristics of COVID-19 patients at elderly and young ages. Result: There were 368 COVID-19 patients with 95 elderly patients (25.81%) and 273 young patients (74.19%). The most frequent symptoms experienced by elderly patients in sequence are cough, gastrointestinal disturbances, fever, and fatigue. It was found that the proportion of COVID-19 patients with comorbid diabetes mellitus (DM) and hypertension (HT) was higher in elderly patients than in younger patients (
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