14,232 research outputs found
Galagoides A. Smith 1833
No full textGalagoides A. Smith, 1833. S. African Quart. J., (2):32. TYPE SPECIES: Galago demidoff Fischer, 1806. SYNONYMS: Hemigalago.Published as part of Colin P. Groves, 1993, Order Primates, pp. 243-277 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 249, DOI: 10.5281/zenodo.735312
Galago moholi A. Smith 1836
No full textGalago moholi A. Smith, 1836. Rept. Exped. Exploring Central Africa, 1834:42 [1836]. TYPE LOCALITY: South Africa, W Transvaal, Marico-Limpopo confluence. DISTRIBUTION: Southern Africa, to SW Tanzania and E Zaire. STATUS: CITES - Appendix II. SYNONYMS: australis, bradfieldi, conspicillatus, intontoi, mossambicus, nyassae, tumbolensis. COMMENTS: Separated from senegalensis by Jenkins (1987), Nash et al. (1989), and Groves (1989).Published as part of Colin P. Groves, 1993, Order Primates, pp. 243-277 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 249, DOI: 10.5281/zenodo.735312
The Shell Builders: Tabby Architecture of Beaufort, South Carolina, and the Sea Islands
No full textJennifer P. Smith reviews The Shell Builders: Tabby Architecture of Beaufort, South Carolina, and the Sea Islands, by Colin Brooker with a forward by Lawrence S. Rowland
Vitamins D3 and D2 have marked but different global effects on gene expression in a rat oligodendrocyte precursor cell line
No full textBackground: Vitamin D deficiency increases the risk of developing multiple sclerosis (MS) but it is unclear whether vitamin D supplementation improves the clinical course of MS, and there is uncertainty about the dose and form of vitamin D (D2 or D3) to be used. The mechanisms underlying the effects of vitamin D in MS are not clear. Vitamin D3 increases the rate of differentiation of primary oligodendrocyte precursor cells (OPCs), suggesting that it might help remyelination in addition to modulating the immune response. Here we analyzed the transcriptome of differentiating rat CG4 OPCs treated with vitamin D2 or with vitamin D3 at 24 h and 72 h following onset of differentiation. Methods: Gene expression in differentiating CG4 cells in response to vitamin D2 or D3 was quantified using Agilent DNA microarrays (n = 4 replicates), and the transcriptome data were processed and analysed using the R software environment. Differential expression between the experimental conditions was determined using LIMMA, applying the Benjamini and Hochberg multiple testing correction to p-values, and significant genes were grouped into co-expression clusters by hierarchical clustering. The functional significance of gene groups was explored by pathway enrichment analysis using the clusterProfiler package. Results: Differentiation alone changed the expression of about 10% of the genes at 72 h compared to 24 h. Vitamin D2 and D3 exerted different effects on gene expression, with D3 influencing 1272 genes and D2 574 at 24 h. The expression of the vast majority of these genes was either not changed in differentiating cells not exposed to vitamin D or followed the same trajectory as the latter. D3-repressed genes were enriched for Gene Ontology (GO) categories including transcription factors and the Notch pathway, while D3-induced genes were enriched for the Ras pathway. Conclusions: This study shows that vitamin D3, compared with D2, changes the expression of a larger number of genes in OLs. Identification of genes affected by D3 in OLs should help to identify mechanisms mediating its action in MS.</p
Should Africa try to learn from Asia? Lessons for and from Uganda
No full textThe failure of sub-Saharan Africa to achieve economic and human development is in stark constrast to the spectacular success of the Tiger economies of East Asia. Inevitably, the question arises of whether today's languishing economies can learn from the past experience of these success stories, or whether different sorts of remedies are needed to suit African conditions. The paper focuses on Uganda as a case study for this potential learning experience. Uganda has enjoyed a period of relative macroeconomic success in recent years, but this has yet to be translated into improvements at the microeconomic level. The experience of East Asia is analysed, and the success of factors categorised into replicable and nonreplicable factors. The feasibility of devising policies to encourage replicable success factors in the Ugandan context is explored, drawing on evidence from a survey of rural households in Uganda carried out under the auspices of the Bank of Uganda in 1997
Supplemental Material - Transit communication via Twitter during the COVID-19 pandemic
No full textSupplemental Material for Transit communication via Twitter during the COVID-19 pandemic by Wenwen Zhang, Camille Barchers, and Janille Smith-Colin in Environment and Planning B: Urban Analytics and City Science</p
Arctocebus Gray 1863
No full textArctocebus Gray, 1863. Proc. Zool. Soc. Lond., 1863:150. TYPE SPECIES: Perodicticus calabarensis J. A. Smith, 1860.Published as part of Colin P. Groves, 1993, Order Primates, pp. 243-277 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 247, DOI: 10.5281/zenodo.735312
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