Jimbaran, Indonesia

Udayana University

www.unud.ac.id
Jimbaran, Indonesia

Udayana University is a public university in Denpasar, Indonesia. It was established on September 29, 1962. Its current rector is Dr. dr. I Made Bakta, SpPD . The university's name was derived from 10th century Balinese King Udayana of Warmadewa Dynasty. Wikipedia.

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This study focuses on the influence of some strong bases solutions of alkaline ammonium hydroxide (NH4OH), sodium hydroxide (NaOH) and potassium hydroxide (KOH). It also assesses the various fiber lengths towards tensile properties, stiffness, natural frequency and damping ratio of ijuk (Arenga pinnata Merr.) fiber strengthened - epoxy composites. KOH solution is the strongest alkaline followed by NaOH and NH4OH. Fiber of A. pinnata was treated using three alkaline solutions of 0.25 M concentration each for 1 hour soaking time. The results showed that the composite fibers with KOH treatment generated the highest tensile strength and stiffness followed by composite with NaOH and NH4OH treatment. Composites with 50 mm fibers had relatively higher tensile strength and stiffness than composites with 10 mm fibers. Natural frequency is proportional to stiffness and inversely related to damping ratio, thus composite with greater stiffness also had higher natural frequency but low damping ratio. © 2016 Author(s).


This paper presents the assessment results and structural retrofitting of SPS Building. The building is a three story reinforced concrete structure with a mezzanine floor for a storage. The building was an office building with a live load of 2.5 kN/m2 and then the building function changes to be an industrial building with a live load of 10 kN/m2. The existing concrete and rebars tensile strength, structural member dimensions and configuration were assessed before structural analysis and redesign were done using a commercial software. It is found that the average concrete strength is about 11 MPa and most of existing structural members are less flexure and shear capacity. Therefore, an external flexure and shear strengthening using external bolted steel plates were applied to those members with grouting materials to fill the gaps between the steel plate and existing structural members. A strength evaluation using direct loading with a maximum water depth of 1000 mm over an area of 60 m2 to represent the live load of 10 kN/m2 was conducted to ensure the retrofitting method works well. The test results show that measured deflections of beams and slabs are still less than the maximum deflection limits. This indicates that the strengthening system using external bolted steel plates can improve the member capacity to support the new design loads. © 2017 The Authors.


Sukrawa M.,Udayana University
Procedia Engineering | Year: 2017

The emerging concept of sustainable construction has lead researchers and practicing engineers to preserve and strengthen existing structures to minimized use of materials and energy associated with it. As a result, many retrofitting techniques for RC frame structures has been proposed and applied as opposed to reconstruction. Among the techniques to increase the seismic load carrying capacity of existing structures, the use of steel braces is very popular and relatively easy to work on. This paper try to consider construction and loading stages in the analysis of earthquake responses of existing RC frame retrofitted with steel braces for low and medium-rise buildings. For that purposes, RC frames of 3, 5, 8, and 10 story typical office buildings were designed consisting of four 3-bays frames in each direction. The chevron A and X-shaped braces were added to the middle bay of the exterior frames to minimized functional changes of the building. Analyses of 3-D models show that the earthquake response of RC frames with A and X steel braces are significantly stiffer and stronger than the original bare frames. The reinforcement requirement in the frames also reduced significantly with the addition of braces. Compared to conventional analysis, staged analysis using cracked section produce larger deformation and forces on the frames, and accordingly, should be used in the analysis to have more accurate result and safer design. © 2017 The Authors.


Hadi M.N.S.,University of Wollongong | Widiarsa I.B.R.,Udayana University
Journal of Composites for Construction | Year: 2012

The majority of studies on fiber-reinforced-polymer (FRP) strengthened concrete columns deal with columns of a circular cross section. However, most concrete columns in the field have square or rectangular cross sections and resist eccentric loads. This paper presents the results of an experimental study on the performance of carbon-fiber-reinforced-polymer (CFRP) wrapped square reinforced concrete (RC) columns under eccentric loading. The influence of the number of CFRP layers, the magnitude of eccentricity, and the presence of vertical CFRP straps were investigated by testing 16 specimens. The specimens had the dimensions 200 × 200 × 800 mm and round corners with a radius of 34 mm. Twelve specimens were tested as columns and four specimens as beams. The results of this study showed that CFRP wrapping enhanced the load-carrying capacity and ductility of the columns under eccentric loading. Furthermore, the application of the vertical CFRP straps significantly improved the performance of the columns with large eccentricity. © 2012 American Society of Civil Engineers.


Grant
Agency: European Commission | Branch: H2020 | Program: RIA | Phase: SC5-03b-2014 | Award Amount: 3.93M | Year: 2015

The GREEN-WIN project will develop a major international transdisciplinary research collaboration to apply a solution-oriented approach targeted at increasing the understanding of links between climate action and sustainability and overcoming implementation barriers through win-win strategies. The project will critically assess where and under which conditions win-win and in particular green growth strategies work in practice and where fundamental trade-offs must be faced. We thereby focus on four critical barriers that have been identified by practitioners and policy makers. First, we develop transformative narratives highlighting opportunities in climate and sustainability action in order to contribute to overcoming cognitive barriers and empowering people. Second, we examine climate and sustainability finance policies and governance arrangements in order to contribute to overcoming financial barriers to mitigation and adaptation. Third, we substantiate the economics of green growth in order to contribute to overcoming economic and collective action barriers to de-carbonisation. Towards this end we introduce major innovations into the GEM-E3 computable general equilibrium model required to discover green growth strategies. These include developing a network-based model of technological diffusion, and introducing financial market constraints and adaptive expectations of agents. Fourth, we contribute to overcoming economic and institutional barriers through identifying win-win strategies, sustainable business models and enabling environments in three action fields of coastal zone flood risk management, urban transformations and energy poverty eradication and resilience. We embed all these activities within a sustained international dialogue involving stakeholders from policy, research, civil society and the private sector, and an open knowledge management and capacity building strategy to promote knowledge transfer and learning beyond the project lifespan.


Masyeni S.,Udayana University
Acta medica Indonesiana | Year: 2013

to evaluate factors which influence bone mineral density in ARV-naive patients in Sanglah Hospital, Bali. a cross-sectional BMD measured by dual X-ray absorptiometry at the lumbar spine (LS) and femoral neck (FN) in 73 ARV-naive HIV-infected patients in out patient clinic of Sanglah Hospital, consecutively, from January to June 2012. Inclusion criteria are ARV-naive HIV-infected patients age 13-50 year old. The relationship among factors influence BMD, CD4 level, HIV RNA, HIV stage (WHO) analysed with Anova and Spearman's correlation test. this study involved 49 males and 24 females. Mean age was 33.08±8.29. Mean CD4 was 144.71±143.40 cell/mmc with the lowest CD4 is 1. Mean viral load (VL) was 272.330±282.990 copies/ml, the lowest VL 400 copies/ml, and the highest 750 000 copies/ml. Low BMD found in 32/73 (43.8%). Osteopenia and osteoporosis were diagnosed in 26/73 (35.6%) and 6/73 (8.2%). 13 (40.6%) of the low BMD cases occurred on the age group 21-30 year. Significant correlation found between low BMD with HIV stage (r=0.337; p<0.001). patients with higher HIV stage have higher risk of low BMD in ARV-naive patient. Further study is needed to evaluate correlation of low BMD with its risk factors.


Soejitno A.,Udayana University
Acta medica Indonesiana | Year: 2010

An immediate reperfusion therapy after acute myocardial infarction (AMI) is a prerequisite to prevent further cardiac damage and minimize ventricular remodelling. Although a rigorous and sophisticated set of therapeutic procedure has been applied in the disease management, mortality rate has yet unchanged during the last twenty years. This fact necessitates an alternative or adjuvant therapy that is critically safe and capable of repairing the injured vascular as well as regenerating the infarcted myocardium without omitting the ethical considerations. Stem cell therapy could be the answer. It has gained major basic and clinical research interest, ever since its discovered potential to repair the injured vascular in 1997. Multiple cell types across lineages have been shown to be able to transdifferentiate into mature functioning cardiomyocytes either in vitro through similar phenotypical and genotypical characteristics or in vivo by regenerating the infarcted myocardium and improve contractile function. Although the exact repairing mechanisms are still in a major debate, numerous clinical trials have demonstrated favorable effects toward the use of autologous stem cells in AMI patients with considerably low side effects. Despite the relatively novel discovery, stem cell therapy offers a promising prospect to confer a better protection, prevent later complications, and perhaps reduce the mortality among patients with ischemic heart disease. This ultimate outcome would likely be achieved through a stringent and coordinated of either basic and clinical research.


Wirawan I.M.A.,Udayana University
Asia-Pacific Journal of Public Health | Year: 2010

Although climate change is a global concern, there are particular considerations for Indonesia as an archipelagic nation. These include the vulnerability of people living in small islands and coastal areas to rising sea levels; the expansion of the important mosquito-borne diseases, particularly malaria and dengue, into areas that lack of immunity; and the increase in water-borne diseases and malnutrition. This article proposes a set of public health responses to climate change health impacts in Indonesia. Some important principles and practices in public health are highlighted, to develop effective public health approaches to climate change in Indonesia. © 2010 APJPH.


to confirm the beneficial effect of BMCs therapy over placebo in AMI patients with inclusion only to the randomized double blind placebo-controlled trials. we searched multiple database (MEDLINE, CENTRAL, CINAHL) through January 2011 for randomized, double-blind, placebo-controlled trials evaluating the efficacy and safety of BMCs for the treatment of AMI. We subsequently performed a random-effect meta-analysis to assess the eligible studies included related to the primary outcomes (mean LVEF, LVESV, and LVEDV changes from baseline) and secondary outcomes (all-cause mortality, recurrent MI, rehospitalization for HF). ten RCTs (total=906 patients) were included. BMCs therapy was proven superior to placebo regarding mean LVEF change (2.07%; 95% CI, 0.55% to 3.59%; [I2=57%; p=0.008]), LVESV (5.52 mL; 95% CI, -7.68 mL to -3.36 mL; [I2=16%; p<0.00001]), and LVEDV (3.08 mL; 95% CI, -5.57 mL to -0.58 mL; [I2=23%, p=0.02]) from baseline. BMCs therapy showed no difference with regards to mortality events when compared to placebo (OR 1.01; 95% CI, 0.35 to 2.94; [I2=0%; p=0.98]), but exerts protective effects toward recurrent MI (OR 0.45; 95% CI, 0.09 to 2.16; [I2=8%; p=0.32]) and rehospitalization for HF (OR 0.39; 95% CI, 0.08 to 1.85; [I2=0%; p=0.24]). All outcomes were sustained for a long period of time (up to 5 years). the resulting meta-analysis concluded that BMCs therapy consistently improves cardiac performance parameters (LVEF, LVESV, and LVEDV) when compared to placebo, even after the establishment of primary intervention. It is also safe to use and prevents the development of recurrent MI and HF.


Painful diabetic neuropathy (PDN) is one of the most common complications of diabetes mellitus. Recently it has become clear that nitric oxide (NO) and proinflammatory cytokines play an important role in the pathogenesis of PDN. We investigated whether the cytokine tumor necrosis factor alpha (TNF-α) and NO play a role in PDN pathogenesis by performing a cross-sectional and a case-control study in 110 type 2 diabetic patients. Of 110 subjects, 59 patients suffered from PDN (cases) and the remaining were painless DN (controls). Cross-sectionally, plasma TNF-α levels and immunoreactivity for inducible NO synthase (iNOS) and TNF-α were higher in patients with more severe pain on the visual analog scale. There were statistically significant differences between mild and severe pain for TNF-α levels, iNOS immunoreactivity, and TNF-α immunoreactivity. There were statistically significant differences between mild and severe pain for TNF-α levels (mean 15.24 pg/mL ± 5.42 vs 20.44 ± 10.34), iNOS immunoreactivity (9.76% ± 8.60% vs 15.48% ± 11.56%), and TNF-α immunoreactivity (13.0% ± 9.48% vs 20.44% ± 11.75%). The case-control study showed that TNF-α had an odds ratio of 5.053 (P < 0.001), TNF-α immunoreactivity of 4.125 (P < 0.001), and iNOS immunoreactivity of 3.546 (P = 0.002). DN patients with high TNF-α levels, and high iNOS and TNF-α expression in macrophages are at risk of suffering from pain. The higher the TNF-α level, and iNOS and TNF-α immunoreactivity, the more severe the pain. These findings could form the basis of further research into better management of PDN. © 2011 Purwata, publisher and licensee Dove Medical Press Ltd.

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