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Search Results: 1 - 10 of 350269 matches for " de Vos G "
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Die krugerfees van 1954 end die betekenis daarvan
G. F. de Vos Hugo
Koers : Bulletin for Christian Scholarship , 1954, DOI: 10.4102/koers.v22i3.1906
Abstract: Graag voldoen ek aan die versoek van die Redaksie om ’n paar indrukke van die Krugerfees weer te gee en om iets te sê oor die betekenis daarvan. Toe die Krugergenootskap aan die begin van 1953 verlof gekry het om die Krugerstandbeeld na Kerkplein te verskuiwe het ons dadelik besef dat ons aan die begin van die verwesenliking van ’n groot ideaal van dieAfrikanerdom s ta an en dat d a a r ’n groot volksfees in die verskiet lê.
Allergic bronchopulmonary aspergillosis treated successfully for one year with omalizumab
Collins J, de Vos G, Hudes G, Rosenstreich D
Journal of Asthma and Allergy , 2012, DOI: http://dx.doi.org/10.2147/JAA.S34579
Abstract: llergic bronchopulmonary aspergillosis treated successfully for one year with omalizumab Case Series (1686) Total Article Views Authors: Collins J, de Vos G, Hudes G, Rosenstreich D Published Date November 2012 Volume 2012:5 Pages 65 - 70 DOI: http://dx.doi.org/10.2147/JAA.S34579 Received: 02 June 2012 Accepted: 01 August 2012 Published: 08 November 2012 Jennifer Collins,1 Gabriele deVos,2 Golda Hudes,2 David Rosenstreich2 1New York Eye and Ear Infirmary, New York, NY, 2Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, NY, USA Background: Current therapy for allergic bronchopulmonary aspergillosis (ABPA) uses oral corticosteroids, exposing patients to the adverse effects of these agents. There are reports of the steroid-sparing effect of anti-IgE therapy with omalizumab for ABPA in patients with cystic fibrosis (CF), but there is little information on its efficacy against ABPA in patients with bronchial asthma without CF. Objective: To examine the effects of omalizumab, measured by asthma control, blood eosinophilia, total serum immunoglobulin E (IgE), oral corticosteroid requirements, and forced expiratory volume spirometry in patients with ABPA and bronchial asthma. Methods: A retrospective review of charts from 2004–2006 of patients treated with omalizumab at an academic allergy and immunology practice in the Bronx, New York were examined for systemic steroid and rescue inhaler usage, serum immunoglobulin E levels, blood eosinophil counts, and asthma symptoms, as measured by the Asthma Control Test (ACT). Results: A total of 21 charts were screened for the diagnosis of ABPA and bronchial asthma. Four patients with ABPA were identified; two of these patients were male. The median monthly systemic corticosteroid use at 6 months and 12 months decreased from baseline usage. Total serum IgE decreased in all patients at 12 months of therapy. Pre-bronchodilator forced expiratory vital capacity at one second (FEV1) was variable at 1 year of treatment. There was an improvement in Asthma Control Test (ACT) symptom scores for both daytime and nighttime symptoms. Conclusions: Treatment with omalizumab creates a steroid-sparing effect, reduces systemic inflammatory markers, and results in improvement in ACT scores in patients with ABPA.
Allergic bronchopulmonary aspergillosis treated successfully for one year with omalizumab
Collins J,de Vos G,Hudes G,Rosenstreich D
Journal of Asthma and Allergy , 2012,
Abstract: Jennifer Collins,1 Gabriele deVos,2 Golda Hudes,2 David Rosenstreich21New York Eye and Ear Infirmary, New York, NY, 2Albert Einstein College of Medicine/Montefiore Medical Center, Bronx, NY, USABackground: Current therapy for allergic bronchopulmonary aspergillosis (ABPA) uses oral corticosteroids, exposing patients to the adverse effects of these agents. There are reports of the steroid-sparing effect of anti-IgE therapy with omalizumab for ABPA in patients with cystic fibrosis (CF), but there is little information on its efficacy against ABPA in patients with bronchial asthma without CF.Objective: To examine the effects of omalizumab, measured by asthma control, blood eosinophilia, total serum immunoglobulin E (IgE), oral corticosteroid requirements, and forced expiratory volume spirometry in patients with ABPA and bronchial asthma.Methods: A retrospective review of charts from 2004–2006 of patients treated with omalizumab at an academic allergy and immunology practice in the Bronx, New York were examined for systemic steroid and rescue inhaler usage, serum immunoglobulin E levels, blood eosinophil counts, and asthma symptoms, as measured by the Asthma Control Test (ACT).Results: A total of 21 charts were screened for the diagnosis of ABPA and bronchial asthma. Four patients with ABPA were identified; two of these patients were male. The median monthly systemic corticosteroid use at 6 months and 12 months decreased from baseline usage. Total serum IgE decreased in all patients at 12 months of therapy. Pre-bronchodilator forced expiratory vital capacity at one second (FEV1) was variable at 1 year of treatment. There was an improvement in Asthma Control Test (ACT) symptom scores for both daytime and nighttime symptoms.Conclusions: Treatment with omalizumab creates a steroid-sparing effect, reduces systemic inflammatory markers, and results in improvement in ACT scores in patients with ABPA.Keywords: allergic bronchopulmonary aspergillosis, omalizumab, asthma
Gold nanoclusters as colloidal catalysts for oxidation of long chain aliphatic 1,2-diols in alcohol solvents
P. G. N. Mertens,I. F. J. Vankelecom,P. A. Jacobs,D. E. De Vos
Gold Bulletin , 2005, DOI: 10.1007/BF03215255
Abstract: Long chain aliphatic 1,2-diols like 1,2-hexanediol and 1,2-octanediol can be converted to the corresponding α-hydroxy-alkanoates with total chemoselectivity, in an oxidation catalyzed by an aqueous gold sol under O2 atmosphere. The sol is stabilized with poly(vinylalcohol), and the reaction is performed in alcohol solvents. Two methods are proposed for the efficient recycling of the colloidal Au catalyst. Firstly a solvent-resistant membrane filtration can be applied. As the membrane material, poly(dimethylsiloxane) is chosen. Secondly, in appropriate conditions, the reaction proceeds in the liquid biphasic mode, and the aqueous Au sol can be recycled by phase separation. Using either of both approaches, the colloidal stability and catalytic activity can be preserved over several recycles.
Arthropod burdens of impalas in the Skukuza region during two droughts in the Kruger National Park
I.G. Horak,V. de Vos,L.E.O. Braack
Koedoe : African Protected Area Conservation and Science , 1995, DOI: 10.4102/koedoe.v38i1.306
Abstract: Ixodid ticks and lice were collected at monthly intervals from March 1980 to February 1981 from impalas of all ages and both sexes in Landscape Zone 4 (Thickets of the Sabie and Crocodile Rivers) in the south-west of the Kruger National Park. Similar collections were made from adult animals in extremis in the same landscape zone during October and November of the drought of 1982 as well as from 15 to 22-month-old male impalas examined at monthly intervals from March to October of the drought of 1992. The louse burdens of the adult animals examined during the 1982 drought were significantly greater than those of adult animals examined during the same months of 1980, a year of normal rainfall. The tick burdens were also larger, but not significantly so. The tick and louse burdens of the young impalas examined during the drought of 1992 were significantly smaller than those of animals of the same age examined during 1980.
A survey of selected bacteriological infections of the Chacma Baboon Papio Ursinus from the Kruger National Park
V. de Vos,G.A.W.J. van Niekerk,E.E. McConell
Koedoe : African Protected Area Conservation and Science , 1973, DOI: 10.4102/koedoe.v16i1.881
Abstract: An absence of bacterial pathogens and zoonosesemerged as the salient feature in a bacteriological survey ofchacma baboons from the Kruger National Park. Totals varyingfrom 100 to 178 baboons were assayed for salmonellosis, shigel-losis, tuberculosis, brucellosis and leptospirosis. It is conjecturedthat with Kruger National Park baboons, the abovementionedpathogens are not expected to complicate handling proceduresor experimentation, provided a clean or pathogen-free environment is maintained from the day of capture onwards.
Anthrax immunization of free-ranging Roan Antelope Hippotragus Equinus in the Kruger National Park
V. de Vos,G.L. van Rooyen,J.J. Kloppers
Koedoe : African Protected Area Conservation and Science , 1973, DOI: 10.4102/koedoe.v16i1.882
Abstract: An aerial method of immunization is presented as afeasible means of vaccinating free-ranging roan antelope Hippotragus equinus against anthrax in the Kruger National Park. Themethod is described in detail and the results, obtained aftertwo consecutive years of application, are noted, tabulated andevaluated. A helicopter and a fixed wing aircraft were success-fully utilized in the location of widely dispersed roan antelopeherds and to bring the operator within effective firing rangeof the animal to be darted. A disposable projectile syringe,which simultaneously administers vaccine and effectively marksthe animal for later identification, is considered a vital part inthe successful implementation of the aerial method of immunization.
Ontwerp- en konstruksieoorwegings vir ligte staalstrukture
G. P.J. de Vos,B. W.J. van Rensburg
Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie , 2001, DOI: 10.4102/satnt.v20i3&4.257
Abstract: In die onlangse verlede is verskeie alternatiewe struktuursisteme in Suid-Afrika voorgestel om die koste verbonde aan ligter staalstrukture te verminder. Die meeste sisteme word vooraf in ’n fabriek vervaardig en op die terrein aanmekaargesit. Groter strukture bestaan gewoonlik uit warmgewalste staalprofiele en ’n argitek, struktuuringenieur, vervaardiger en kontrakteur word benodig. As alternatief tot hierdie bestaande praktyke, stel hierdie artikel ontwerp- en konstruksietegnieke voor wat die koste van die struktuur kan verminder en terselfdertyd werkskepping vir voornemende kontrakteurs moontlik maak. As konstruksiemetode word die aanmekaarsweis van ligte profiele op die terrein voorgestel. Vir die struktuur word onder andere voorgestel: pylerfondamente om gedeeltelike inklemming aan die struktuur te verskaf; samestellings van koudgevormde dunwandige profiele vir die struktuurdele wat lig en effektief is; en spanvelkonstruksie waar die bekleding, latte en raamelemente as eenheid saamwerk. Verskillende kombinasies van elemente om groter strukture te vorm is geanaliseer en ontwerp en toon die veelsydigheid van die konstruksiemetode aan. Die artikel toon ten slotte aan dat die gebruik van die voorgestelde metode lei tot ekonomiese strukture en bespreek die toepassings van die beginsels op ’n aantal werklike strukture. Abstract Design and construction considerations for light steel structures Many alternative structural systems have recently been proposed in South Africa in an attempt to reduce costs of lightweight steel structures. Most of these comprise premanufactured components which are bolted together on site. Large industrial type structures are usually constructed with hot-rolled steel profiles, so that, apart from the architect, a structural engineer, manufacturer and contractor would be required. As an alternative to these existing practices, this article proposes design and construction techniques that may reduce the cost of the structure and at the same time create employment for emerging contractors. The proposed construction method consists of the welding together of lightweight profiles on site. For the structure the following is proposed: short pile footings to provide partial fixidity to the structure, effective and lightweight compositions of cold-formed thin-walled profiles for structural elements, and stressed skin diaphragm design wherein the cladding, purlins and structural elements work together as one unit. Alternative portal frame configurations were analysed and designed to form larger structures, which indicates the versatilit
Utilización de los servicios del nivel primario de atención por los ancianos en tres policlínicos de Cuba Using primary health care services for the elderly in three polyclinics in Cuba
René G García Roche,Armando Rodríguez Salvá,Pol de Vos,Patrick Van der Stuyft
Revista Cubana de Higiene y Epidemiología , 2012,
Abstract: La revolución científico-técnica ha contribuido al envejecimiento poblacional (mayor proporción de ancianos en la población), y ha impactado al sistema de salud con la utilización más frecuente de servicios, como los del nivel primario de atención, que a su vez no tienen el desarrollo necesario para enfrentar la demanda creciente y especializada de este grupo de edad. Para describir la utilización de los servicios del nivel primario de atención por los ancianos residentes en algunos de los consultorios de tres policlínicos del país durante el a o 2006 se hizo un estudio descriptivo. Se calcularon números absolutos, razones de tasas y tasas anuales por habitantes/personas/a o por sexo y para el total del grupo en estudio de cada policlínico. Las tasas de utilización fueron 1,22 y 3,53 respectivamente para terrenos y consultas. Los indicadores mostraron diferencias en la organización, calidad y tipo de los servicios brindados entre uno y otro policlínico. El policlínico "Marcio Manduley" tuvo las mayores tasas de utilización (6,00 contra 2,27, respectivamente) para consultas y terrenos; 2,54 contra 6,22 para consultas programadas/no programadas; 8,46 contra 0,31 para prescripciones médicas hechas Sí/No y 4,48 contra 4,49 para actividades preventivas indicadas Sí/No. El Policlínico "Felipe J. Rodríguez" tuvo los indicadores más bajos. Se concluye que la organización del trabajo en los policlínicos repercutió sobre la utilización de los servicios en el nivel primario de atención, como la calidad y el tipo de servicios brindados, y estas diferencias entre policlínicos podrían constituir inequidades en el acceso a estos servicios por los ancianos. The scientific and technological revolution has contributed to population aging (higher proportion of elderly in the population), and it has impact on the health system since it is more frequent the use of primary health care services, which, in turn, does not have the necessary development to meet this growing and specialized demand for this age group. A descriptive study was conducted to describe the use of primary health care services by the elderly residents in some of Cuban medical practices in 2006. Absolute numbers, rate ratios and annual rates per capita/person/year by sex were calculated for the total study group at each clinic. Utilization rates were 1.22 and 3.53 respectively for territory and medical practices. The indicators showed differences in organization, quality, and type of services provided between these medical practices. Marcio Manduley clinic had the highest rates of use -6.00 versus 2.27, re
Diabetic Muscle Infarction: A Rare Cause of Acute Limb Pain in Dialysis Patients
G. De Vlieger,B. Bammens,F. Claus,R. Vos,K. Claes
Case Reports in Nephrology , 2013, DOI: 10.1155/2013/931523
Abstract: Diabetic muscle infarction is a rare microangiopathic complication occurring in patients with advanced diabetes mellitus. Diabetic patients with chronic kidney disease stage Vd are prone to develop this complication. The presenting symptom is a localized painful swelling of the affected limb. Symptoms usually resolve spontaneously during the following weeks, but frequent relapse can occur and in some cases swelling may lead to compartment syndrome. Biochemical blood analyses show an elevated C-reactive protein, but creatine kinase is often normal. Diagnosis can be made on clinical presentation and imaging, with magnetic resonance imaging as the gold standard. Histology is often not contributive. Treatment consists of rest, analgesics, rigorous glycemic control and low-dose aspirin. Severe cases of compartment syndrome require fasciotomy. In the current paper, we present two diabetic patients with cystic fibrosis, who are treated with automated peritoneal dialysis and suffered from episodic lower limb infarction. We subsequently review 48 episodes of diabetic muscle infarction previously reported in the literature in patients with end-stage renal disease. 1. Introduction Diabetic muscle infarction (DMInf) is a rare microangiopathic complication in patients with advanced diabetes mellitus (DM). Patients having terminal diabetic nephropathy are prone to develop DMInf and nearly one-fourth of DMInf, patients receive renal replacement treatment [1]. Consequently, nephrologists are likely to be increasingly confronted with this disease entity. 2. Case Reports Case 1. A 27-year-old woman with cystic fibrosis started insulin treatment at the age of 11. When she was 16 years old, she received bilateral lung transplantation (SSLTx). Her immune-suppressive therapy consisted of tacrolimus and steroids. At the age of 24, she developed chronic kidney disease stage V (CKD-Vd) for which peritoneal dialysis (PD) was started. Two years later, she presented with acute pain in the right calf. Biochemical evaluation showed an elevated creatine kinase (CK 218?U/L) and C-reactive protein (CRP 97?mg/L). HbA1c was 5.8%. Ultrasound and computed tomography (CT) showed diffuse muscular and subcutaneous edema of the affected calf. Muscular biopsy demonstrated muscular atrophy, macrophages, and myophagia. The symptoms resolved within four weeks. There was a new onset of pain in the left calf 18 months later. CK was normal, but CRP levels were elevated (215?mg/L). HbA1c was 7.2%. The clinical and biochemic characteristics are shown in Table 1. Magnetic resonance imaging (MRI) showed
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