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The Relation between Physical Activity and Rural Space Concerning 13-18 Year-Old Romanian Youth
Iosif SANDOR,Stuart J.H. BIDDLE,Istvan SOOS
Journal of Settlements and Spatial Planning , 2011,
Abstract: Scarce data on physically active and sedentary youth behaviour in the Transylvanian rural space are available. Romania is a relatively new member of the EU; however the socioeconomic status (SES) of the people in this country may differ from other countries. The main differences, not only the geographical ones, between the rural and the urban space could also specifically influence the population’s health and quality of life, in our case the youths’ between 13 and 18 years old.
体育活动与老年人的抑郁:系统综述
孙延林?,Stuart J . H. Biddle
天津体育学院学报 , 2002,
Abstract: 抑郁是老年人一种常见的不良情绪。通过对描述性研究、元分析研究、流行病学研究和实验研究的综述,认为体育活动对减轻老年人的抑郁有积极作用。
Bio-optical characteristics of phytoplankton populations in the upwelling system off the coast of Chile
STUART,VENETIA; ULLLOA,OSVALDO; ALARCóN,GADIEL; SATHYENDRANATH,SHUBHA; MAJOR,HEATHER; HEAD,ERICA J.H.; PLATT,TREVOR;
Revista chilena de historia natural , 2004, DOI: 10.4067/S0716-078X2004000100008
Abstract: phytoplankton samples collected from two cruises off the coast of chile were analysed for pigment composition and absorption characteristics. high pigment concentrations (up to 20 mg chl-a m-3) were found in the upwelled waters over the shelf break off the coast of concepción during spring (october 1998), but relatively oligotrophic conditions were found further offshore. similarly, stations further north (between coquimbo and iquique), sampled during the austral summer (february 1999), also showed low pigment concentrations, characterised by the presence of prymnesiophytes, and cyanobacteria including prochlorococcus sp. the specific absorption coefficient of phytoplankton at 443 nm (a*ph(443)) was much higher for the offshore population than the inshore population, which was dominated by large diatoms. these differences are attributed to changes in pigment packaging and pigment composition. the relative proportion of non-photosynthetic carotenoids to chl-a, together with the ratio of the peak height of the gaussian bands in the blue and red regions of the spectrum, p(435)/p(676), (an indicator of the importance of the packaging effect) could account for up to 92 % of the total variation in a*ph(443). blue/green absorption ratios were strongly related to the relative concentration of 19'-hexanoyloxyfucoxanthin and fucoxanthin. a reasonable agreement was found between in situ and satellite estimates of chl-a (seawifs data) despite the large variability in phytoplankton specific absorption coefficients, suggesting that the `global' absorption-to-chlorophyll relationships encompass the regional variations observed off the coast of chile. satellite chl-a was overestimated in oligotrophic water when compared to hplc chl-a measurements, apparently because of the high specific absorption coefficients of phytoplankton in the offshore waters. on the other hand, ship and satellite data were in closer agreement when in situ fluorometric chl-a data was used. it is likely that
The gastrointestinal tract and HIV pathogenesis
J.H Downs
South African Journal of Clinical Nutrition , 2010,
Abstract: Gastrointestinal dysfunction has been recognised as a major manifestation of the human immunodeficiency virus (HIV) infection usually presenting as diarrhoea which may or may not be due to the presence of an opportunistic infection of the GIT. Contrary to earlier assumptions, there is now substantial evidence to demonstrate that there are significant changes in the gut in the acute phase of HIV infection; the most significant of these being the substantial loss of the CD4+ T-cells in the GIT. Delays in the initiation of HAART (that is, once the CD4+ T-cell count drops below 200 cells/uL), is associated with a greater severity of HIV-associated GIT enteropathy, and poor clinical outcome.
Challenges facing the ATKV to succeed within the context of a global information community
J.H. Basson
South African Journal of Information Management , 2009, DOI: 10.4102/sajim.v4i3.180
Abstract:
Feeding habits of the Cape Mountain Zebra Equus zebra zebra LINN. 1758
J.H Grobler
Koedoe : African Protected Area Conservation and Science , 1983, DOI: 10.4102/koedoe.v26i1.596
Abstract: The feeding habits of the Cape mountain zebra Equus zebra zebra Linn. 1758, were studied in the Mountain Zebra National Park. They were highly selective utilising only seven of 17 available grass species at feeding sites and 26 of plants available. These zebra fed at 40 mm to 80 mm above the ground except when eating seed heads of certain grass species. Protein levels of grasses eaten were above 4 and seasonal movements were associated with mean food quality @ there were thus summer grazing and winter grazing areas. Mean crude protein in the faeces fluctuated seasonally.
An annotated check list of the leeches (Annelida : Hirudinea) of the Kruger National Park with a key to the species
J.H. Oosthuizen
Koedoe : African Protected Area Conservation and Science , 1991, DOI: 10.4102/koedoe.v34i2.421
Abstract: The diagnosis, distribution and bionomics of the ten species of leeches occurring in the Kruger National Park and a key to the identification of the species are presented. Seven species belong to the family Glossiphoniidae, two to the family Hirudinidae and one species to the family Salifidae. The African fish leech Batracobdelloides tricarinatus and the reptilian parasite Placobdelloidesmultistriatus are the most common species in the park. Two of the three snail leeches occurring in the reserve, viz. Alboglossiphoniadisjuncta and Helobdella conifera, the predaceous Salifa perspicax and the sanguivorous Hirudo michaelseni are widespread but not common. The snail leech Alboglossiphonia conjugata occurs only in the small Madzaringwi River and its tributaries located in the most northern part of the park. The amphibian parasite Oosthuizobdella stuhlmanni was found only at two adjacent localities in the most southern reaches of the park with the sanguivorous Asiatic obdella buntonensis limited to the southern half of the reserve. The host-specific parasite of hippopotami, Placobdelloidesjaegerskioeldi, is restricted to habitats inhabited by its host.
Surinaamse aquarellen en tekeningen van A. Borret. (Met 4 platen)
J.H. Maronier
Bijdragen tot de Taal-, Land- en Volkenkunde , 1955,
Abstract:
Tekeningen en aquarellen van J.H.W. Le Clercq (met platen)
J.H. Maronier
Bijdragen tot de Taal-, Land- en Volkenkunde , 1953,
Abstract:
Grieks aan die P.U. vir C.H.O.*
J.H. Grobler
Koers : Bulletin for Christian Scholarship , 1967, DOI: 10.4102/koers.v35i1.1373
Abstract: Met hierdie rede word betoog dat die patroon van die studie van Grieks wat deur die Atheners vier tot vyf eeue v.C. daargestel is en deur die Alexandryne en Pergamon van drie eeue v.C. tot drie eeu n.C. verder gevorm is, deur die eeue nagevolg is, telkens met die oogmerke wat gepas het by die bepaalde tye, tot in die twintigste eeu. Volgens hierdie patroon is Attiese Grieks bestudeer. Die Attiese Grieks is die literêre taal, die skryftaal, van Athene in die vyfde en vierde eeue v.C. Hierdie tradisie is ook aan die P.U. vir C.H.O. nagevolg. Aan hierdie Universiteit is die studente van Grieks hoofsaaklik, indien nie uitsluitlik nie, voornemende teologiese studente.
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