Wyniki wyszukiwania

1

The suprascapular notch: its morphology and distance from the glenoid cavity in a Kenyan population

100%

Sinkeet S. R., Awori K. O., Odula P. O., Ogeng'o J. A., Mwachaka P. M.

Folia Morphologica

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2010

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tom 69

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nr 4

The morphology of the suprascapular notch has been associated with suprascapular entrapment neuropathy, as well as injury to the suprascapular nerve in arthroscopic shoulder procedures. This study aimed to describe the morphology and morphometry of the suprascapular notch. The suprascapular notch in 138 scapulae was classified into six types based on the description by Rengachary. The suprascapular notch was present in 135 (97.8%) scapulae. Type III notch, a symmetrical U shaped notch with nearly parallel lateral margins, was the most prevalent type, appearing in 40 (29%) scapulae. The mean distance from the notch to the supraglenoid tubercle was 28.7 ± 3.8 mm. This varied with the type of notch, being longest in type IV (30.1 ± 1.8 mm) and shortest in type III (27.3 ± 2.3 mm). The mean distance between the posterior rim of the glenoid cavity and the medial wall of the spinoglenoid notch at the base of the scapular spine was found to be 15.8 ± 2.2 mm. Type III notch was the most prevalent, as found in other populations. In a significant number of cases the defined safe zone may not be adequate to eliminate the risk of nerve injury during arthroscopic shoulder procedures, even more so with type I and II notches. (Folia Morphol 2010; 69, 4: 241–245)

2

The extent of nutrient removal by wastewater treatment plants along the Nyalenda Wigwa Stream and the River Kisat (Kenya)

100%

Musungu C. P., Ogoche I. J., Lalah J., Ongeri D., Chepkui R., Kiema F.

International Journal of Ecohydrology and Hydrobiology

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2013

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tom 13

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nr 4

3

Antimicrobial susceptibility patterns of Enterobacteriaceae isolated from domesticated animals and the environment in Lake Victoria, Kenya

100%

Wawire S. A., Miruka D. O., Nelson N., Ofulla A.

International Journal of Ecohydrology and Hydrobiology

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2013

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tom 13

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nr 4

4

East African bryophytes. XVIII. Two new Lejeuneaceae [Hepaticae] from the Aberdare Mountains [Kenya]

100%

Pocs T.

Polish Botanical Journal

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2002

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tom 47

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nr 1

5

The Jumping Spiders of the Ethiopian Region. Part I. New genus Langelurillus gen.n. [Araneae, Salticidae] from Kenya

100%

Prochniewicz M.

Annales Zoologici

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1994

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tom 45

The genus Langelurillus gen. nov. is described. Its relationships to Aelurillus Simon, 1884, Langona Simon, 1901 and Phlegra Simon, 1876 are discussed. Three new species: Langelurillus primus, L. holmi and L. spinosus from Kenya are described.

6

Parasite communities of Oreochromis niloticus baringoensis (Trewavas, 1983) in relation to selected water quality parameters in the springs of Lorwai Swamp and Lake Baringo, Kenya

84%

Adamba S. W. K., Otachi E. O., Ong'ondo G. O.

Acta Parasitologica

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2020

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tom 65

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nr 2

7

Dendryphantine jumping spiders (Araneae: Salticidae) of Kenya with descriptions of a few new species

84%

Wesolowska W., Dawidowicz A.

Annales Zoologici

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2014

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tom 64

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nr 1

Following eight species of dendryphantine jumping spiders are described as new to science: Deridryphantes elgonensis (♂), D. holmi (♂♀), D. luridus (♂♀), D. minutus (♂), D. serratus (♂), D. subtilis (♂), Rhene kenyaensis (♂) and R. mombasa (♀).D. hewitti is recorded in Kenya for the first time.

8

Parasite communities of the elongate tigerfish Hydrocynus forskahlii (Cuvier 1819) and redbelly tilapia Tilapia zillii (Gervais 1848) from Lake Turkana, Kenya: influence of host sex and size

84%

Otachi E. O., Szostakowska B., Jirsa F., Fellner-Frank C.

Acta Parasitologica

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2015

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tom 60

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nr 1

9

Ecohydrology as a tool for the survival of the threatened Serengeti ecosystem

84%

Gereta E., Mwangomo E., Wolanski E.

International Journal of Ecohydrology and Hydrobiology

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2009

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tom 09

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nr 1

The results of 10 years of monitoring water quality and quantity during the period 1996-2006 in the three rivers (Mbalageti, Grumeti and Mara) draining the Serengeti ecosystem are presented, together with river gauging data starting in 1948, rainfall data starting in 1960, and animal population data starting in 1960. Water quality remained unchanged in the Mbalageti and Grumeti rivers; these rivers are seasonal and they dry out during a drought. The Mara River is perennial and is vital to maintain the ecosystem during a drought. Its quality has changed, with increased contribution from groundwater, with higher pH and visibility and decreasing salinity. The flow rate during a drought has decreased by 68% since 1972. This is attributed to deforestation of its upper catchment in the Mau forest in Kenya and to extraction of water for irrigation in Kenya upstream of the ecosystem. Hydrological modeling suggests that the Mara River would now dry out for two months and one month respectively if the 1949-1952 and the 1972-1973 severe droughts occurred again. Ecohydrologic modeling suggests that this would in turn lead to the collapse of the herbivore population from the lack of drinking water. This model also suggests that providing drinking water to the animals at artificial water holes spread throughout the ecosystem would lead to decadal time-scale booms and busts of the herbivore population. The Serengeti ecosystem stability is maintained by the annual migration that partitions the ecosystem in seasonally used compartments. It is thus necessary to restore the natural hydrology of the Mara River in Kenya, and this requires remediation measures in Kenya. If that does not occur, disaster prevention measures are needed by providing water in weirs, dams, and artificial wetlands along the Mara River in the Serengeti National Park, as well as extending by 5 km the western edge of the park so as to reach Lake Victoria to provide acces to permanent water.

10

Ecohydrological principles to underpin the restoration of Cyperus papyrus at Lake Naivasha, Kenya

84%

Morrison E. H. J., Harper D. M.

International Journal of Ecohydrology and Hydrobiology

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2009

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tom 09

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nr 1

Degradation of C. papyrus (papyrus) at Lake Naivasha is the result of a combination of lowered lake levels and destruction by large grazing mammals, buffalo and cattle, followed by several smaller species, in addition to more limited direct human clearance. Restoration of papyrus is considered to be of great importance for the future sustainability of the lake ecosystem. Two different interventions for papyrus (wetland) restoration have been proposed: one located around the delta of the Malewa river, based on ecohydrological principles, the other on land adjacent to the Gilgil river, adopting more of an ecological engineering approach. Both interventions are ecologically feasible. However, the principal limitations of both projects relate to anthropogenic factors and, in this respect, restoration of the Gilgil river is regarded as the more feasible of the two proposals at the present time. Future action should facilitate the involvement of local communities in any restoration projects at Lake Naivasha, with particular emphasis placed on the development of economic goods derivable from papyrus swamps.

11

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Ecomorphology of radii in Canidae: Application to fragmentary fossils from Plio-Pleistocene hominin assemblages

84%

Meloro C., Louys J.

Acta Palaeontologica Polonica

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2015

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tom 60

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nr 4

Fragmentary long bone material from fossil Carnivora is rarely considered to support palaeoenvironmental reconstructions. Here, we use morphometry of the radius in extant carnivorans of the dog family (Canidae) to reconstruct the palaeobiology of extinct canids from Olduvai Gorge, Tanzania (Bed I and II) and Koobi Fora, Kenya. We use radius mor-phometrics to predict adaptation to prey size and introduce a new method for quantifying canid habitat adaptations based on the geographic distributions of the extant species sampled. Linear Discriminant Function Analyses (DFA) and cluster neighbour-joining algorithms are employed to investigate radial morphometrics as described by 29 linear measurements. Results of our analyses suggest that a phylogenetic signal is present in radial morphometrics, even if it does not allow us to accurately discriminate among genera. A binary prey size categorisation of "small-medium" versus "large" prey can be more accurately predicted than a habitat categorisation scheme (Open, Mixed, Closed). The East African fossil specimens examined show morphometric affinities with the golden jackal (Canis aureus) and coyote (Canis latrans) and are likely attributable to the genus Canis. Fragmentary fossil specimens from Olduvai Gorge are predicted as habitat generalists (Open for Bed I and Mixed for Bed II) adapted for hunting small-medium prey, whereas the specimen from Koobi Fora was predicted as inhabiting mixed habitats and adapted for killing large prey. This study supports the inclusion of fossil Canidae in palaeoecological analyses attempting to clarify the palaeoenvironment of early hominin fossil sites.

12

Microbial assessment of selected earthen fish ponds in western Kenya

84%

Miruka D. O., Ochieng J. O., Were J. W., Waindi E. N.

International Journal of Ecohydrology and Hydrobiology

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2013

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tom 13

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nr 4

13

Public perceptions of papyrus: community appraisal of wetland ecosystem services at Lake Naivasha, Kenya

84%

Morrison E. H. J., Upton C., Pacini N., Odhiambo-K'oyooh K., Harper D. M.

International Journal of Ecohydrology and Hydrobiology

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2013

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tom 13

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nr 2

14

UNESCO/DAAD/Exceed Conference "Water in Africa", Kisumu, Kenya October 1-3, 2012

84%

Bahadir A. M.

International Journal of Ecohydrology and Hydrobiology

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2013

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tom 13

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nr 4

15

Using land cover change to predict forest degradation pressure points, Eastern Mau Forest, Kenya

84%

Ndubi A. O.

International Letters of Natural Sciences

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2018

|

tom 71

Land cover change in any ecosystem vary in space and time. The study analyzed spatialtemporal land cover change to predict forest degradation pressure points in Eastern Mau Forest Reserve. The study objectives were to determine types and amount of spatial-temporal land cover change; land cover change drivers and; forest resources use sustainability. The study used mixed sample survey design involving purposive sampling of spatial data and cluster sampling of forest resource use data. Primary data included ground control points, field validation data and forest resource use data. Secondary data included Landsat imagery, forest and administration boundaries and settlements data. Analysis was done for 1986-2014 period using Remote Sensing and Geographical Information System. The analysis techniques used included object based image segmentation and classification, accuracy assessment and land cover change detection. Land cover types in Eastern Mau Forest consisted of indigenous forest, shrubland, grassland, plantation forest, cultivated fields, bare ground and built-up area. The analysis results depicted that cultivated fields coverage increased from 1% to 47%. Indigenous and plantation forests decreased from 43% to 36% and 34% to 7% respectively. Grassland and shrubland decreased from 16% to 8% and 6% to 2% respectively. Bare ground and built up area had a change of less than 1% each. Causes of pressure that lead to forest degradation included crop cultivation, settlement construction, livestock grazing, charcoal burning, firewood collection, logging, bee keeping and medicinal herbs extraction. Land cover change was more on the eastern side than on the western side. Indigenous and plantation forests were likely to disappear if cropland and built up area expansions were to remain unchecked. The study recommendations were: resettlement activities be eliminated in the Eastern Mau Forest; excision of forest land for crop cultivation should be discouraged; and scientific research should be carried out on sustainable plantation forest activities.

16

Response of elite Kenyan finger millet (Eleusine coracana, L. Gaertn) genotypes to Ethrel application

84%

Kanguni J. S., Odeny D. A., Dangasuk O. G., Matasyoh L. G., Oduori C. O. A.

International Letters of Natural Sciences

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2015

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tom 48

Finger millet is a staple food crop of many communities in Africa. The crop is highly nutritious and has incredible grain storage quality. Limited research investment in finger millet in the past has resulted in poor yields and there are currently no commercial hybrids. We investigated the response of different finger millet genotypes (Okhale-1, Gulu-E, KACCIMMI-72, IE 2872, IE 4115 and U-15) to the application of a plant growth regulator hormone (Ethrel). Six elite Kenyan finger millet varieties with contrasting agronomic traits were crossed in a 6 x 6 diallel pattern. To enhance male sterility across female parents, we subjected the plants to Ethrel at concentrations of 1,500ppm, 1,750ppm and 2,000ppm against a 0ppm check. Dwarfing of sprayed plants that resulted in less lodging and ultimately higher yields were observed among plants sprayed with Ethrel at different concentrations. Ethrel application at 2,000ppm had the most dwarfing effect on plants while spraying plants with 1,500ppm of Ethrel resulted in increased grain weight. Although our results demonstrate overall positive effect of Ethrel on finger millet production, the optimum concentrations for more efficient hybridization will still need to be determined.

17

Temporal changes of sediment dynamics within the Nairobi River sub-basins between 1998-2006 time scale, Kenya

84%

Kithiia S. M., Wambua B. N.

Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation

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2010

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tom 42

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nr 1

17-22

The city of Nairobi is the heart of both industrial production and the economic hub in Kenya and the Eastern Africa region. The city of Nairobi and its environs are drained by three streams, namely: Nairobi, Mathare and Ngong rivers. These streams drain areas of diverse land use activities. The land use changes in a spatial manner from the rich agricultural system through residential cum urban to industrial. The signifi cance of these various land use systems to pollutants generation, pollution, sediment generation and hence water pollution and quality degradation is quite enormous and worth investigation. The land use changes in a spatial manner making the basin ideal for a temporal variation of sediments yields along the river profi le and their impacts on the water quality status. This paper examines the results of study carried out within the basins in the years 1998–2006. The method of study involved water sampling and laboratory analysis to reveal the trends in sediment load increases downstream the investigated streams. Soil samples were also investigated to determine their relationship to soil erosion rates and sediment fl uxes. The study attempts further to fi nd the best sediment management strategies in reversing their increasing trends and restoring water quality within the basin.

18

A reinterpretation of Conostomum crassinervium [Musci, Bartramiaceae] from East Africa

84%

Ochyra R.

Fragmenta Floristica et Geobotanica

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1997

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tom 42

|

nr 2

19

Eosentomon rachelae n.sp., a new species from Kenya [Protura: Eosentomidae]

84%

Szeptycki A., Broza M.

Genus. International Journal of Invertebrate Taxonomy

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2003

|

tom 14

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nr 4

20

Synquadrideres, new genus of Platynotini from Kenya [Coleoptera: Tenebrionidae]

84%

Iwan D.

Annales Zoologici

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2003

|

tom 53

|

nr 2

Synquadrideres gen. nov. is described from Kenya, with three known species: naivashaensis sp. nov. (type species), rnedius sp. nov. and merkli sp. nov. The genus belongs to platynotoid group of the tribe Platynotini, where is related to the genus Quadrideres Koch.

Ograniczanie wyników

The suprascapular notch: its morphology and distance from the glenoid cavity in a Kenyan population

The extent of nutrient removal by wastewater treatment plants along the Nyalenda Wigwa Stream and the River Kisat (Kenya)

Antimicrobial susceptibility patterns of Enterobacteriaceae isolated from domesticated animals and the environment in Lake Victoria, Kenya

East African bryophytes. XVIII. Two new Lejeuneaceae [Hepaticae] from the Aberdare Mountains [Kenya]

The Jumping Spiders of the Ethiopian Region. Part I. New genus Langelurillus gen.n. [Araneae, Salticidae] from Kenya

Parasite communities of Oreochromis niloticus baringoensis (Trewavas, 1983) in relation to selected water quality parameters in the springs of Lorwai Swamp and Lake Baringo, Kenya

Dendryphantine jumping spiders (Araneae: Salticidae) of Kenya with descriptions of a few new species

Parasite communities of the elongate tigerfish Hydrocynus forskahlii (Cuvier 1819) and redbelly tilapia Tilapia zillii (Gervais 1848) from Lake Turkana, Kenya: influence of host sex and size

Ecohydrology as a tool for the survival of the threatened Serengeti ecosystem

Ecohydrological principles to underpin the restoration of Cyperus papyrus at Lake Naivasha, Kenya

Ecomorphology of radii in Canidae: Application to fragmentary fossils from Plio-Pleistocene hominin assemblages

Microbial assessment of selected earthen fish ponds in western Kenya

Public perceptions of papyrus: community appraisal of wetland ecosystem services at Lake Naivasha, Kenya

UNESCO/DAAD/Exceed Conference "Water in Africa", Kisumu, Kenya October 1-3, 2012

Using land cover change to predict forest degradation pressure points, Eastern Mau Forest, Kenya

Response of elite Kenyan finger millet (Eleusine coracana, L. Gaertn) genotypes to Ethrel application

Temporal changes of sediment dynamics within the Nairobi River sub-basins between 1998-2006 time scale, Kenya

A reinterpretation of Conostomum crassinervium [Musci, Bartramiaceae] from East Africa

Eosentomon rachelae n.sp., a new species from Kenya [Protura: Eosentomidae]

Synquadrideres, new genus of Platynotini from Kenya [Coleoptera: Tenebrionidae]