Gadjah Mada University

About: Gadjah Mada University is a education organization based out in Yogyakarta, Indonesia. It is known for research contribution in the topics: Population & Adsorption. The organization has 17307 authors who have published 21389 publications receiving 116561 citations. The organization is also known as: University of Gajah Mada & Universitas Gadjah Mada.

Asupan protein, kalsium dan fosfor pada anak stunting dan tidak stunting usia 24-59 bulan

Abstract: Background: Indonesia is one of developing country which still facing a serious problem concerning stunting. Causes of stunting is a complex things, one of the cause is protein intake which is have effect on the level plasma insulin growth factor I (IGF-I), protein bone matrix and growth factor, also calcium and phosphorus that has an important role in bone formation. One of the province in Indonesia which has stunting prevalence above level of National prevalence is West Borneo. Pontianak as the capital city of West Borneo is still facing serious problem concerning stunting and the low level of food security. Objective: Analyze protein, calcium and phosphorus intake of stunting and non stunting children aged 24-49 months in Pontianak. Method: The study was an analytical observational with cross sectional design. Samples of the study were children aged 24-59 months in the districts of East Pontianak and North Pontianak, West Borneo, as much as 90 samples have been chosen by using simple random sampling technique. The research was conducted from July - August 2015. Statistical analysis was performed by using chi square and t-test. Results: Protein, calcium and phosphorus intake are lower to the stunting compare to non stunting children (p<0,05). Stunting prevalence of lower protein group is higher 1,87 times than adequate protein intake group. Stunting prevalence of low calcium intake group is higher 3,625 times than adequate calcium intake group. Moreover, the stunting prevalence of low phosphor intake group is higher 2,29 times than adequate phosphor intake group. Conclusion: Protein, calcium and phosphor intake significant lower to the stunting compare to non stunting children aged 24- 59 months in Pontianak.

Ica-expression and gentamicin susceptibility of Staphylococcus epidermidis biofilm on orthopedic implant biomaterials

Abstract: Ica-expression by Staphylococcus epidermidis and slime production depends on environmental conditions such as implant material and presence of antibiotics. Here, we evaluate biofilm formation and ica-expression of S. epidermidis strains on biomaterials involved in total hip- and knee arthroplasty [polyethylene (PE), polymethylmethacrylate (PMMA), stainless steel (SS)]. Ica-expression, assayed using real-time RT-PCR, was highest on PE as confirmed using confocal laser scanning microscopy. Yet biofilm formation by S. epidermidis was most extensive on SS, with less slime production. Ica-expression and slime production were minimal on PMMA. After 3 h of continued growth of 24 h old biofilms in the presence of gentamicin, biofilms on PE showed lower susceptibility to gentamicin, relative to the other materials, presumably as a result of the stronger ica-expression. A higher gentamicin concentration further decreased metabolic activity on all biomaterials. It is concluded that the level of biomaterial-induced ica-expression does not correlate with the amount of biofilm formed, but initially aids bacteria in surviving antibiotic attacks. Once antibiotic treatment has started however, also the antibiotic itself induces slime production and only if its concentration is high enough, killing results. Results suggest that biomaterial-associated infections in orthopedics by S. epidermidis on PE may be more difficult to eradicate than on PMMA or SS.

Exploration and exploitation: a 20-year review of evolution and reconceptualisation

Abstract: The exploration–exploitation tension has been resonated and applied in diverse areas of management research. Its applications have deviated substantially from the scope of organisational learning as originally proposed by March [(1991). Exploration and exploitation in organizational learning. Organization Science, 2(1), 71–87]. Scholars have developed set of definitions, new conceptualisations, and varied applications in rejuvenating the concept; and literatures on this topic seem do not significantly ensure a conclusive picture. It is still also unclear what are the antecedents and following scientific breakthroughs which may have led to the divergence of this construct. This study offers an added value as it becomes the first to apply a bibliometric analysis, combined with fine-grained content analysis to attain a more comprehensive understanding on how the construct of exploration–exploitation have grown and evolved during the last 20 years. We attempt to grasp the structural pattern of citing behaviour and collective understanding among scholars, through conducting in-depth bibliographic review in a complete population of articles on this topic, published in leading journals following March [(1991). Exploration and exploitation in organizational learning. Organization Science, 2(1), 71–87]. This study identifies the intellectual base articles which form the basis of the exploration–exploitation and the turning point articles that shift the discussion into different directions.