322 research outputs found
Extending the job embeddedness-life satisfaction relationship: An exploratory investigation
Purpose
This exploratory study adopts a stakeholder perspective on organisational effectiveness. The purpose of this paper is to examine the job embeddedness (JE)–life satisfaction relationship, moderating roles of gender and community embeddedness and mediating role of innovative behaviour. Design/methodology/approach
Using a snowballing approach, data were collected from 549 participants employed in organisations located in four major metropolitan centres in South Africa. Findings
Analyses revealed a positive relationship between JE and life satisfaction. Gender moderated the JE–life satisfaction relationship, such that the relationship was stronger among females than males. Community embeddedness moderated the organisation embeddedness–life satisfaction relationship, such that the relationship was stronger when participants were highly embedded in their community. Finally, innovative behaviour mediated the relationship between organisation embeddedness and life satisfaction. Practical implications
Managers could enhance employees’ life satisfaction through practices that increase on-the-job and off-the-job embeddedness. Furthermore, organisations could encourage employees’ innovative behaviours through workplace supervisors’ supportive responses to innovative employees. Originality/value
JE researchers have yet to focus on the personal benefits of embeddedness for employees. Results of the study provide several contributions to this research direction. The study uses JE as a composite construct to confirm its relationship with life satisfaction. It also expands the JE–life satisfaction relationship by examining moderators of the relationship and a mediating variable in the relationship
Photosensitivity in South Africa. IV. Pathological changes in the liver in ovine photosensitivity caused by the plant Asaemia axillaris (Thunb.) Harv. Ex Jackson
Hepatic lesions in 4 field cases of ovine hepatogenous photosensitization caused by the plant, Asaemia axillaris (Thunb.) Harv. Ex Jackson, are described. The liver was usually swollen, friable and yellowish-brown, with distinct lobulation. Microscopically, the lesions ranged from peripheral coagulative necrosis in 1 animal to others with scattered single cell or small foci of necrosis as well as hepatocellular degeneration and unrest, ductular proliferation, portal fibroplasia and cholestasis.
The liver lesions are compared with those of previously reported experimental cases of A. axillaris poisoning in sheep. The significance of zonal necrosis and factors that may have a bearing on their production in different hepatotoxic plant poisonings in sheep and cattle in South Africa are discussed.The articles have been scanned in colour with a HP Scanjet 5590; 600dpi.
Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format
Hepatogenous photosensitivity diseases in South Africa
Various hepatogenous photosensitivity diseases of ruminants in South Africa, caused by plants, fungi and an alga, are described. Information is given on botanical, mycological, toxicological, clinical and pathological aspects of the diseases. The intoxications were grouped according to the primary site of involvement and type of lesions in the liver. The aetiology, pathogenesis, and diagnosis of these conditions received special attention and the most important features are illustrated in colour.The articles have been scanned in colour with a HP Scanjet 5590; 600dpi.
Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format
Photosensitivity in South Africa. III. Ovine hepatogenous photosensitivity caused by the plant Athanasia trifurcata L. (Asteraceae)
Hepatogenous photosensitivity was experimentally induced in 1 out of 4 sheep dosed with milled Athanasia trifurcata. This is an unpalatable aromatic shrub commonly found along the south-western and south-eastern Cape coast on overgrazed, recently burnt or disturbed veld, up to an altitude of 1100 m. The liver lesions ranged from a few small multifocal areas of necrosis in 1 animal to various zonal patterns of necrosis (centrizonal, midzonal and peripheral) in each of the other 3. Botanical, toxicological and clinical data are given.The articles have been scanned in colour with a HP Scanjet 5590; 600dpi.
Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format
Observations on the clinical, cardiac and histopathological effects of fluoroacetate in sheep
Fluoroacetate was dosed per stomach tube to 17 Merino sheep at the rate of 0,05 - 1,0 mg/kg/day. The clinical signs, haemodynamic changes, chemical pathology and pathology of acute, subacute and chronically intoxicated cases are described.
Tetanic convulsions were seen in acutely intoxicated animals and in them respiratory failure, occurring concomitantly with cardiac failure, may have been the cause of death. Subacute intoxication resulted in less conspicuous clinical signs when the sheep were at rest, but they developed apparent nervous signs on being handled, and later tended to lie down. Chronically intoxicated animals were only mildly affected.
At all levels of intoxication changes in the chemical pathological parameters were either absent or were mild and transient.
The microscopic lesions in the hearts of acutely intoxicated sheep included degeneration as well as necrosis of individual or small groups of myocardial fibres. In the subacutely and chronically intoxicated animals the multifocal myocardial lesions were more widespread and in various stages of development or resolution.The articles have been scanned in colour with a HP Scanjet 5590; 600dpi.
Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format
Photosensitivity in South Africa. VI. The experimental induction of geeldikkop in sheep with crude steroidal saponins from Tribulus terrestris
Geeldikkop was induced in sheep by the oral administration of crude steroidal saponins from Tribulus terrestris. Two of the sheep developed typical lesions of geeldikkop, including birefringent crystalloid material in bile ducts and concentric periductal lamellar fibrosis. The clinical pathological changes in these sheep were also consistent with those of geeldikkop: aspartate transaminase and gamma-glutamyl transferase activities in the sera of both were elevated, and one had bilirubinaemia. A third sheep became photosensitive without typical lesions of geeldikkop in the liver or changes in the activities of liver enzymes before euthanasia. The findings of these trials are consistent with reports from abroad that ovine hepatogenous photosensitization, caused by Agave lechuguilla and Narthecium ossifragum,can be induced with crude saponins from the respective plants.The articles have been scanned in colour with a HP Scanjet 5590; 600dpi.
Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format.mn201
A tremorgenic mycotoxicosis of cattle caused by maize sprouts infested with Aspergillus clavatus
An outbreak of disease affecting a herd of 16 dairy cattle which were fed mouldy, sprouted maize is
described. Eight of the cattle were affected, 5 of which died. The clinical signs included muscular tremors,
hypersensitivity, ataxia, anorexia and salivation. Aspergillus clavatus was the only fungus isolated from the
sprouts.
Clinical signs that were indistinguishable from those in the field outbreak were reproduced by dosing the
mouldy maize sprouts to a steer and a sheep, and by dosing another sheep with maize inoculated with a pure
culture of A. clavatus isolated from the mouldy maize on the farm. Light microscopical examination revealed
neuronal degeneration and necrosis in the midbrain, medulla oblongata and spinal cord of all 3 of these animals.
The disease is clinically and pathologically indistinguishable from the disease caused by the ingestion of
sorghum beer residue, and in certain respects it is similar to toxicoses caused by the ingestion of wheat sprouts
and malt sprouts infested with A. clavatus.The articles have been scanned in colour with a HP Scanjet 5590; 600dpi.
Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format.am201
Photosensitivity in South Africa. VII. Chemical composition of biliary crystals from a sheep with experimentally induced geeldikkop
Geeldikkop was induced in a sheep by oral administration of crude saponins from Tribulus terrestris.
Centrifugation of the bile from this sheep gave a pale green sediment of crystalloid material which was
insoluble in common organic solvents, but soluble in acetic acid. Analysis of the crystalloid material by
¹H and ¹³C NMR, EDXA, TLC, LSIMS, and by acidic hydrolysis followed by TLC and GC-MS, revealed
it to be composed principally of a 6:1 mixture of the calcium salts of the β-D-glucuronides of the steroidal
sapogenins epismilagenin and episarsasapogenin. The administered saponin was found to contain
glycosides of the steroidal sapogenins diosgenin, yamogenin, epismilagenin, tigogenin, neotigogenin,
gitogenin and neogitogenin in the ratio 10:7:1:11:7:35:25. A metabolic pathway for the conversion of
diosgenin and yamogenin saponins to the biliary glucuronides is proposed.The articles have been scanned in colour with a HP Scanjet 5590; 600dpi.
Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format.Agricultural Research Council. Foundation
for Research and Development.mn201
Системно-динамічний підхід до трактування інтелектуального потенціалу інноваційного підприємства
Enhanced diagnosis of rabies and molecular evidence for the transboundary spread of the disease in Mozambique
Rabies is a neglected zoonotic disease with veterinary and public health significance,
particularly in Africa and Asia. The current knowledge of the epidemiology of rabies in
Mozambique is limited because of inadequate sample submission, constrained diagnostic
capabilities and a lack of molecular epidemiological research. We wanted to consider the
direct, rapid immunohistochemical test (DRIT) as an alternative to the direct fluorescent
antibody (DFA) for rabies diagnosis at the diagnostic laboratory of the Central Veterinary
Laboratory (CVL), Directorate of Animal Science, Maputo, Mozambique. Towards this aim, as
a training exercise at the World Organisation for Animal Health (OIE) Rabies Reference
Laboratory in South Africa, we performed the DRIT on 29 rabies samples from across
Mozambique. With the use of the DRIT, we found 15 of the 29 samples (52%) to be negative.
The DRIT-negative samples were retested by DFA at the OIE Rabies Reference Laboratory, as
well as with an established real-time Polymerase chain reaction, confirming the DRIT-negative
results. The DRIT-positive results (14/29) were retested with the DFA and subsequently
amplified, sequenced and subjected to phylogenetic analyses, confirming the presence of
rabies RNA. Molecular epidemiological analyses that included viruses from neighbouring
countries suggested that rabies cycles within Mozambique might be implicated in multiple
instances of cross-border transmission. In this regard, our study has provided new insights
that should be helpful in informing the next steps required to better diagnose, control and
hopefully eliminate rabies in Mozambique.The National Research Foundation
(NRF) of South Africahttp://www.jsava.co.zaam2017Microbiology and Plant Patholog
- …