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Search Results: 1 - 10 of 338106 matches for " Eloy H van de Lisdonk "
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The design of the Dutch EASYcare study: a randomised controlled trial on the effectiveness of a problem-based community intervention model for frail elderly people [NCT00105378]
René JF Melis, Monique IJ van Eijken, George F Borm, Michel Wensing, Eddy Adang, Eloy H van de Lisdonk, Theo van Achterberg, Marcel GM Olde Rikkert
BMC Health Services Research , 2005, DOI: 10.1186/1472-6963-5-65
Abstract: DGIP is a community intervention model for frail elderly persons where the GP refers elderly patients with a problem in cognition, mood, behaviour, mobility, and nutrition. A geriatric specialist nurse applies a guideline-based intervention with a limited number of follow up visits. The intervention starts with the application of the EASYcare instrument for geriatric screening. The EASYcare instrument assesses (instrumental) activities of daily life, cognition, mood, and includes a goal setting item. During the intervention the nurse regularly consults the referring GP and a geriatrician. Effects on functional performance (Groningen Activity Restriction Scale), health related quality of life (MOS-20), and carer burden (Zarit Burden Interview) are studied in an observer blinded randomised controlled trial. 151 participants were randomised over two treatment arms – DGIP and regular care – using pseudo cluster randomisation. We are currently performing the follow up visits. These visits are planned three and six months after inclusion. Process measures and cost measures will be recorded. Intention to treat analyses will focus on post intervention differences between treatment groups.The design of a trial evaluating the effects of a community intervention model for frail elderly people was presented. The problem-based participant selection procedure satisfied; few patients that the GP referred did not meet our eligibility criteria. The use of standard terminology makes detailed insight into the contents of our intervention possible using terminology others can understand well.In frail elderly persons chronic conditions and loss of function challenge their autonomy. This harms their well-being, and often leads to institutionalisation and high health care costs.There is much heterogeneity in the degree to which frailty affects older people. While some have many problems, others age successfully [1]. The introduction of the concept of successful aging voiced a change in ou
Barriers in recognising, diagnosing and managing depressive and anxiety disorders as experienced by Family Physicians; a focus group study
Eric van Rijswijk, Hein van Hout, Eloy van de Lisdonk, Frans Zitman, Chris van Weel
BMC Family Practice , 2009, DOI: 10.1186/1471-2296-10-52
Abstract: focus group discussions with FPs, qualitative analysis of transcriptions using thematic coding.The FPs considered recognising, diagnosing and managing depressive- and anxiety disorders as an important task. They expressed serious doubts about the validity and usefulness of the DSM IV concept of depressive and anxiety disorders in family practice especially because of the high frequency of swift natural recovery. An important barrier was that many patients have difficulties in accepting the diagnosis and treatment with antidepressant drugs. FPs lacked guidance in the assessment of patients' burden. The FPs experienced they had too little time for patient education and counseling. The under capacity of specialised mental health care and its minimal collaboration with FPs were experienced as problematic. Valuable suggestions for solving the problems encountered were madeNext to serious doubts regarding the diagnostic concept of depressive- and anxiety disorders a number of factors were identified which serve as barriers for suitablemental health care by FPs. These doubts and barriers should be taken into account in future research and in the design of interventions to improve mental health care in family practice.Recognition and treatment of depressive disorders and anxiety disorders in family practice is not always in line with current medical standards. Intervention studies to improve the standard of care- focussing on education, dissemination and implementation of guidelines and use of screening instruments- are not particularly encouraging especially regarding patient outcome. Next to benefits of the programs we assumed that such interventions insufficiently match with the problems experienced by family physicians (FPs). Focus group discussions with FPs were held to explore and analyse the problems FPs encounter and to get sight the solutions they bring forward.Depressive and anxiety disorders are the most common mental health problems in the population, with a pre
Distribución espacial y temporal del cangrejo Callinectes sapidus (Decapoda: Portunidae) en la Bahía de Chetumal, Quintana Roo, México
Ortiz-León,Héctor J; Navarrete,Alberto de Jesús; Sosa Cordero,Eloy;
Revista de Biología Tropical , 2007,
Abstract: temporal and spatial distribution of the crab callinectes sapidus (decapoda: portunidae) in chetumal bay, quintana roo, mexico. in order to determine temporal and spatial distribution patterns of callinectes sapidus, samplings were carried out during the cold-front (january-february), dry (may-june) and rainy (august-september, 2002) climatic seasons, in 30 sampling stations of chetumal bay, grouped in sectors a (14 stations), b (eight stations) and c (eight stations). in each sampling station crabs were collected from two transects parallel to the coast, each with three traps, separated by 30 m. sediments were calcareous coarse and medium sand, white or lightly gray. a total of 1 031 specimens were collected. cpeu (capture per effort unit) differed spatially and temporally. highest cpeu was found in sector c with 1.3 ind?trap-1, and in the rainy season with 1.1 ind?trap-1. population was predominantly composed of male individuals. the male:female ratio was 15:1. males and adults (group ii) cpeu was significant different between sectors and climatic seasons. both males and adults (group ii) had a greater cpeu in sector c (1.2 ind?trap-1) and in the rainy season (1.1 ind?trap-1). abundance of female and juvenile individuals (group i) was low during the sampling period whereas group 0 juvenile individuals were not found. a greater relative frequency between sectors and climatic seasons were observed in 130-139 mm and 140-149 mm size interval (cw). c. sapidus occurred on sandy sediments in chetumal bay. pearson product moment correlations exhibited significant relationships between cpeu and temperature, salinity and dissolved oxygen. in chetumal bay, the spatial and temporal distribution of c. sapidus can be related to salinity, temperature, habitat quality, food availability, recruitment and reproduction events of individuals. rev. biol. trop. 55 (1): 235-245. epub 2007 march. 31.
Distribución espacial y temporal del cangrejo Callinectes sapidus (Decapoda: Portunidae) en la Bahía de Chetumal, Quintana Roo, México
Héctor J Ortiz-León,Alberto de Jesús Navarrete,Eloy Sosa Cordero
Revista de Biología Tropical , 2007,
Abstract: Para determinar los patrones de distribución espacial y temporal de Callinectes sapidus, se realizaron muestreos durante las temporadas climáticas de nortes (enerofebrero), secas (mayo-junio) y lluvias (agosto-septiembre de 2002), en 30 estaciones de muestreo de la Bahía de Chetumal, agrupados en los sectores A (14 estaciones), B (ocho estaciones) y C (ocho estaciones). Para recolectar las jaibas se colocaron en cada sitio de muestreo dos transectos paralelos a la costa, con tres trampas cada uno, separadas 30 m una de otra. Se recolecciónron 1 031 ejemplares de C. sapidus. La CPUE difirió espacial y temporalmente. La mayor CPUE fue encontrada en el sector C, con 1.3 ind trampa-1, y en la temporada climática de lluvias, con 1.1 ind trampa-1. La población estuvo compuesta predominantemente de individuos machos. La relación macho: hembra fue 15:1. La CPUE de machos y de adultos (grupo II) fue significativamente diferente entre sectores y entre temporadas climáticas. Ambos presentaron resultados similares, registrando la mayor CPUE en el sector C (1.2 ind trampa-1) y en la temporada climática de lluvias (1.1 ind trampa-1). La CPUE de hembras y de jóvenes del grupo I fue escasa durante el período de muestreo, mientras que la de jóvenes del grupo 0, fue nula. La mayor frecuencia relativa entre los sectores y las temporadas climáticas se observó en los intervalos de talla (AC) de 130-139 mm y 140-149 mm. C. sapidus se presentó en los sedimentos arenosos de la Bahía de Chetumal. La correlación producto momento de Pearson mostró relaciones significativas entre la CPUE de C. sapidus con la temperatura, salinidad y el oxígeno disuelto. Los patrones de distribución espacial y temporal mostrados por C. sapidus en la Bahía de Chetumal parecen estar relacionados con las características de salinidad, temperatura, protección, alimentación, reclutamiento y los eventos reproductivos. Temporal and spatial distribution of the crab Callinectes sapidus (Decapoda: Portunidae) in Chetumal Bay, Quintana Roo, Mexico. In order to determine temporal and spatial distribution patterns of Callinectes sapidus, samplings were carried out during the cold-front (January-February), dry (May-June) and rainy (August-September, 2002) climatic seasons, in 30 sampling stations of Chetumal Bay, grouped in sectors A (14 stations), B (eight stations) and C (eight stations). In each sampling station crabs were collected from two transects parallel to the coast, each with three traps, separated by 30 m. Sediments were calcareous coarse and medium sand, white or lightly gray. A total of 1 031 specime
The Inter- and Intraindividual Anatomical Relationship of the Femoral Anteversion and Distal Femoral Rotation. A Cadaveric Study on the Femoral Anteversion Angle, Posterior and Inferior Condylar Angle Using Computed Tomography  [PDF]
H. M. J. van der Linden-van der Zwaag, L. C. D. Konijn, T. J. van der Steenhoven, H. J. L. van der Heide, M. C. de Ruiter, R. G. H. H. Nelissen
Advances in Computed Tomography (ACT) , 2015, DOI: 10.4236/act.2015.41002
Abstract:
Malrotation following Total Knee Arthroplasty (TKA) is directly related to poor outcome. Knowledge of the rotational axes (torsion) and angles is therefore important. The aim of the study was to determine whether an association existed between the Femoral Anteversion Angle (FAA) Posterior Condylar Angle (PCA) and the Inferior Condylar Angle (ICA) in individuals. A CT scan of 50 (25 paired) cadaver femora was made. The FAA, PCA and ICA were measured. Statistical analysis of comparative relationships between these different angles was examined by calculating Pearson correlation coefficients and a paired t-test. The mean FAA, PCA and ICA for the whole group were respectively 11.7° (range 0 - 32, SD 8.2), 5.18° (range 0 - 12, SD 2.4) and 4.4° (range 0 - 10, SD 2.1). A correlation of 0.82 (p = 0.01) of the FAA was found between left versus right. For the overall group a correlation coefficient between the PCA of the left and right femur was r = 0.59, p = 0.01. The Pearson correlation between the FAA and PCA in the whole group was r = 0.27, p = 0.06. In females this was r = 0.54 (p = 0.03). Although the difference of the mean ICA and PCA was very small (0.7°), there was no correlation between these angles (r = 0.14, p = 0.23). In conclusion, one should be aware that, considering the weak correlation of the FAA and PCA, an individual rotational variation exists. Furthermore, no correlation was found between the PCA and ICA. Therefore, for now, this angle cannot be assumed to be helpful in TKA. A more individual approach in total knee arthroplasty seems essential for future TKA.
Experience of Patients Undergoing Mini-Arthroscopy Compared to MRI in the Earliest Phases of Arthritis  [PDF]
Maria J. H. de Hair, Marleen G. H. van de Sande, Mario Maas, Danielle M. Gerlag, Paul P. Tak
International Journal of Clinical Medicine (IJCM) , 2013, DOI: 10.4236/ijcm.2013.412A2001
Abstract:

Objective: To evaluate the expectations and experience of patients undergoing mini-arthroscopy compared to contrast enhanced MRI for research purposes. Methods: Seventeen patients with early, active arthritis (Group A) and 21 autoantibody-positive individuals without any evidence of arthritis upon physical examination (Group B) were included. All subjects underwent both contrast enhanced MRI and synovial biopsy sampling by mini-arthroscopy of the same joint within one week. At inclusion and after both procedures, subjects filled in questionnaires with items about expectations and experience with regard to the procedures. Results: Before procedures, subjects in group B had a higher fear of and reluctance to undergo mini-arthroscopy compared to MRI (p < 0.0001 and p = 0.001, respectively). Before procedures, 42% of the subjects preferred MRI, 11% of the subjects preferred mini-arthroscopy and 47% had no preference for either procedure. After both procedures, subjects preferences changed to 39% for MRI, 32% for mini-arthroscopy and 29% for no preference for one or the other procedure. When comparing Group A with Group B, there were no significant differences in preference before

Modelación mediante la dinámica de los fluidos por computadora (CFD) de la corriente de aire de un pulverizador agrícola con ventilador centrífugo
Herrera Prat,Mario Ignacio; García de la Figal Costales,Armando Eloy; de las Cuevas Milán,Héctor; Martins Teixeira,Mauri;
Revista Ciencias T??cnicas Agropecuarias , 2010,
Abstract: the use of aided sprayer of current of air for the application of defensive agricultural it constitutes a necessity in the control of plagues in fruit-bearing. the spraying machines that transport the pesticide drop with current of air are those that lost adults present. the process is complex when combining the size of the drop and the aerodynamics of the current of air in interaction with the conditions of the climate and with the movement of the sprayers. the dynamics of having flowed by computer (cfd) it constitutes a valuable tool for the analysis and study of the current of air, it allows to visualize the phenomenon and the variation in simple way of the experimentation conditions. the aerodynamics of the current of air of the sprayer martignani, that uses the centrifugal fan major that distributes its air in four exits, was studied. starting from the speed of the air in the exits and their distribution will proceed to the simulation of the current of air. the effect was studied in the current of air of the movement of the sprayer martignani for speeds of 2,18, 4,5 and 6,35 km/h. it is characterized the aerodynamics of the sprayer and the most rational work regimes to use.
Support to the development of food processing enterprise in Africa - An entrepreneur based approach
W Wurdemann, H van de Meerendonk
Journal of Food Technology in Africa , 1999,
Abstract:
Estimating urban heat island effects on near-surface air temperature records of Uccle (Brussels, Belgium): an observational and modeling study
R. Hamdi ,H. Van de Vyver
Advances in Science and Research (ASR) , 2011, DOI: 10.5194/asr-6-27-2011
Abstract: In this letter, the Brussels's urban heat island (UHI) effect on the near-surface air temperature time series of Uccle (the national suburban recording station of the Royal Meteorological Institute of Belgium) was estimated between 1955 and 2006 during the summer months. The UHI of Brussels was estimated using both ground-based weather stations and remote sensing imagery combined with a land surface scheme that includes a state-of-the-art urban parameterization, the Town Energy Balance scheme. Analysis of urban warming based on the remote sensing method reveals that the urban bias on minimum air temperature is rising at a higher rate, 2.5 times (2.85 ground-based observed) more, than on maximum temperature, with a linear trend of 0.15 °C (0.19 °C ground-based observed) and 0.06 °C (0.06 °C ground-based observed) per decade respectively. The summer-mean urban bias on the mean air temperature is 0.8 °C (0.9 °C ground-based observed). The results based on remote sensing imagery are compatible with estimates of urban warming based on weather stations. Therefore, the technique presented in this work is a useful tool in estimating the urban heat island contamination in long time series, countering the drawbacks of an ground-observational approach.
Die chemiese ondersoek van vier Senecio spesies van die Nasionale Krugerwildtuin
H. L. de Waal,P. Van Twisk
Koedoe : African Protected Area Conservation and Science , 1964, DOI: 10.4102/koedoe.v7i1.798
Abstract: Die chemiese ondersoek van vier Senecio spesies van die Nasionale Krugerwildtuin
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