Palembang, Indonesia
Palembang, Indonesia

For the Thai university, Rajamangala University of Technology Srivijaya also known as Srivijaya University, see Rajamangala University of Technology.Sriwijaya University is a public university in Palembang, South Sumatra, Indonesia. It was founded on 29 October 1960. The current rector, for the years 2011-2015, is Badia Perizade. Wikipedia.

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Legiran S.,University of Sriwijaya | Brandi M.L.,University of Florence
Clinical Cases in Mineral and Bone Metabolism | Year: 2012

Background. Leptin has been known to play a role in weight regulation through food intake and energy expenditure. Leptin also has an important role in bone metabolism. The role of leptin is determined by leptin receptors, either central or peripheral to the bones. Design. We discuss the Edizioni role of leptin on bone and molecular genetics of osteoporosis in postmenopausal obese women. Results. The role of leptin in bone preserves bone mineral density (BMD) through increased OPG levels leading to bind RANKL, resulting in reducing osteoclast activity. The estrogen role on bone is also mediated by RANKL and OPG. In postmenopausal women who have estrogen deficiency, it increases the rate of RANKL, which increases osteoclastogenesis. Obese individuals who have a high level of leptin will be effected by bone protection. Conclusion. CIC There are similarities in the mechanism between estrogen and leptin in influencing the process of bone remodeling. It may be considered that the role of estrogen can be replaced by leptin. Molecular genetic aspects that play a role in bone remodeling, such as leptin, leptin receptors, cytokines (e.g. RANK, RANKL, and OPG), require further study to be useful, especially regarding osteoporosis therapy based on genetic analysis. © CIC Edizioni Internazionali.

Arifin A.,National University of Malaysia | Arifin A.,University of Sriwijaya | Sulong A.B.,National University of Malaysia | Muhamad N.,National University of Malaysia | And 2 more authors.
Materials and Design | Year: 2014

The bio-active and biodegradable properties of hydroxyapatite (HA) make this material a preferred candidate for implants such as bone replacement in replacing natural tissues damaged by diseases and accidents. However, the low mechanical strength of HA hinders its application. Combining HA with a biocompatible material with a higher mechanical strength, such as a titanium (Ti) alloy, to form a composite has been of interest to researchers. A HA/Ti composite would possess characteristics essential to modern implant materials, such as bio-inertness, a low Young's modulus, and high biocompatibility. However, there are issues in the material processing, such as the rheological behavior, stress-shielding, diffusion mechanism and compatibility between the two phases. This paper reviews the HA and Ti alloy interactions under various conditions, in vitro and in vivo tests for HA/Ti composites, and common powder metallurgy processes for HA/Ti composites (e.g., pressing and sintering, isostatic pressing, plasma spraying, and metal injection molding). © 2013 Elsevier Ltd.

Khakim M.Y.N.,University of Sriwijaya | Tsuji T.,Kyushu University | Matsuoka T.,Kyoto University
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing | Year: 2013

We estimated the surface uplift (heave) rate due to steam-assisted gravity drainage (SAGD) at the Hangingstone oil sand field in Alberta, Canada, by stacking differential synthetic aperture radar (SAR) interferograms. To improve accuracy, a Landsat-7 Enhanced Thematic Mapper Plus intensity image was coregistered with the SAR intensity image. We examined three interferogram filtering methods and identified one that provided the desired effect of light filtering in areas of low noise and heavier filtering in high-noise areas. Based on our analysis of interferogram coherences, site-specific decorrelation highly depends on local seasonal changes. Stacking was performed to estimate the surface uplift rate while removing atmospheric and seasonal effects. The amounts of the uplift rate and slope change estimated by means of InSAR analysis reached a maximum of 3.6 cm/yr and 0.003%, respectively, for the period of 2007-2008. Comparison of the magnitude and patterns of the estimated surface uplift demonstrated that the uplift estimated from InSAR analysis agrees well with that obtained by conventional geodetic (GPS) surveys from a network of 54 monuments. Surface slope changes due to SAGD that we detected by using InSAR over one year in this oil sand field were small, so destruction of surface facilities by uplift is unlikely in the short term. © 2008-2012 IEEE.

Resti Y.,University of Sriwijaya
Journal of Physics: Conference Series | Year: 2015

Based on the dependence between edge and colour intensity of aluminium waste image, the aim of this paper is to classify the aluminium waste into three types; pure aluminium, not pure aluminium type-1 (mixed iron/lead) and not pure aluminium type 2 (unrecycle). Principal Component Analysis (PCA) was employed to reduction the dimension of image data, while Bayes' theorem with the Gaussian copula was applied to classification. The copula was employed to handle dependence between edge and colour intensity of aluminium waste image. The results showed that the classifier has been correctly classifiable by 88.33%. © Published under licence by IOP Publishing Ltd.

Nurmaini Dr. S.,University of Sriwijaya
International Journal of Control and Automation | Year: 2012

Navigation in mobile robot not only avoid obstacles based on the sensor input but also comprehend the nature of its environment, remember over time such comprehended scenarios, recollect them and associate in time perceptions of environment that resemble each other. Such requirements demand spatial and temporal reasoning capabilities, for considering the mobile robot environmental as an experience of a sequence of sensor patterns. Memory-based reasoning must integrate into mobile robot control strategy to produces efficiently movement in unpredictable environment, to achieve robustly and to reduce computational cost. To implement this strategy Fuzzy-Kohonen Network (FKN) technique is utilized by employing small number of rules. The effectiveness of the proposed technique is demonstrated in series of practical test on our experimental mobile robot in structured and unstructured environment. A detailed comparison of the proposed technique with other recent approaches in the specific case of 'local minima' detection and obstacle avoidance is also presented. As results found that mobile robot based on FKN technique has the ability to perform navigation tasks in several environments, it has capability to recognize the environment, suitable for low cost mobile robot due to only produce small resources, provides much faster response to expected events and it allows the mobile robot move without any need to stop for 'danger' situation without suffering from the 'local minima' problem.

Indrajaya T.,University of Sriwijaya
Acta medica Indonesiana | Year: 2011

to describe the role of ACE gene polymorphism on pathogenesis of ischemic stroke in patients with the history of hypertension. The study was conducted in a population of Palembang city. approximately 3 ml of peripheral blood samples were obtained by using venipuncture on antecubital vein. The samples were collected in tubes that contained ethylene diamine tetraacetic acid (EDTA) for DNA analysis. The DNA was extracted from leukocytes according to the standard DNAzol® Extraction Protocol. Samples were stored at -80°C until the analysis. Template DNA was then amplified by using a pair of sense oligonucleotide primer of 5'-CTGG AGACC ACTCCCATCCTTTCT-3' and antisense primer 5'-GATGGTGGCCATCAC ATTCGTC AGAT-3', 10 pmol of each primer. The PCR mixture contained 20 ng of genomic DNA, 3 mM MgCl2, 50 mM KCl, 10 mM Tris-HCl pH 8.4, 5% dimethyl-sulphoxide (DMSO), each of 0,5 mM deoxyribonucleoside triphosphate (dNTPs) and 1 unit of Taq polymerase in a final volume of 50 μL. The DNA was amplified by 30 cycles; denaturation at 940C for 1 min, annealing at 580C for 1 min, and extension at 720C for 2 min, followed by a final extension at 720C for 4 min by using PCR Thermal (Icycler, Biorad, USA). PCR products were separated by electrophoresis on a 2% agarosa gel, and identified by ethidium bromide (0.1%) staining, and finally visualized by ultraviolet light. They were documented by using the geldoc (Biorad, USA). The PCR product is a 190 bp fragment in the absence of insertion (D) and a 490 bp fragment in the presence of insertion (I). ischemic stroke with hypertension or with the history of hypertension was found more frequently in male (70%) and ≥ 55 year old subjects (60.0%). The study showed that the frequency of II genotype was higher than DI and DD. Moreover, the frequency of I allele was higher than D allele. In healthy normotensive group, the results remained the same. However, different results were found in infarct-stroke group with hypertension history in which the frequency of DI genotype was higher than in II genotype and the DD. The study showed that there was no significant correlation (p=0.188) between ACE gene polymorphism and infarct stroke in subjects with the history of hypertension. ACE gene just has approximately 5% role in developing ischemic stroke. there is no significant correlation between ACE gene polymorphism and the development of ischemic stroke in patients with history of hypertension of the population in Palembang. However, the study showed that there is a different pattern of genetic control on ACE compared to previous studies ever done in Caucasians.

Nurmaini S.,University of Sriwijaya
Journal of Theoretical and Applied Information Technology | Year: 2012

This paper presents new hybrid control architecture-based interval type-2 nuro-fuzzy (IT2NF) for embedded mobile robot navigation where event-driven control is used to handle the dynamically changing of the environment. The proposed hybrid control architecture combining behavior-based reactive navigation and model-based environmental classification has been developed. Weightless neural network (WNNs) in charge of environmental classification, this strategy does not only enable the mobile robot to avoid local minimum points but also eliminates the requirement for prior detailed modeling of the environment. Then, IT2FLC based reactive behavior is utilized to perform mobile robot navigation task use environmental pattern classification. The previous study show that embedded controller on low cost microcontroller is difficult to design due to hardware and software constraints. In this paper, the hybrid control architecture uses hierarchical structure of IT2 fuzzy sets (IT2FS) to avoid the huge rule base due to the embedded platform and modular structure of WNNs to reduce the computational cost and increases processing speed of the controller. Technologies to address these limitations are integrated into hybrid controller architecture to be carried out, thus the autonomous mobile robot navigation system can be executed successfully. Flexibility and performance of the proposed control architecture is validated through experiments on the real embedded mobile robot in a variety of environmental condition. The experimental results show that, the proposed architecture-based IT2NF has dealt in real environment with uncertainties present in the changing and unstructured environments can avoid obstacles at the desired safe distance, follow the desired trajectory in smooth movement and produces minimal computational resources.

Darmawi,University of Sriwijaya | Sipahutar R.,University of Sriwijaya | Bernas S.M.,University of Sriwijaya | Imanuddin M.S.,University of Sriwijaya
Renewable and Sustainable Energy Reviews | Year: 2013

Tidal energy could convert into power on the basis of height difference (Tidal Barrages) and on the basis of flow speed (Tidal Current). The studies have shown that tidal barrages have some disadvantages concerning the environmental impacts and the limits of availability of economic sites. Tidal current seems to have much advantages concerning the environmental impacts and technology advancement and simplicity in application. This article discusses the tendency of utilization of small hydropower energy generation system in the coming decades regarding the concern of environment impacts and electricity needs worldwide. © 2012 Elsevier Ltd.

Syarif N.,University of Sriwijaya
Energy Procedia | Year: 2014

We examined bio-carbon electrodes-based electrochemical capacitor. The electrodes were produced from gelam wood activated carbon. Six types of carbon electrodes in separator - electrodes assemblies were tested using galvanostatic charging - discharging (GCD) and electrochemical impedance spectroscopy (EIS) instrumentation. Eight types of aqueous solution from acid, base and salt were used as electrolytes. Three of six electrodes were prepared from carbon pelletsand others were prepared from powdered carbons. Carbon pellets were shaped and sized into electrode monoliths, and therefore those pellets were becoming binder-less. The powdered carbon were compacted along with binder and surfactant into 20 mm in diameter electrodes. The GCD and EIS measurements clearly indicated that both binderless and binderized carbon electrodes (CE) in electrochemical capacitor (EC) have 0.01 - 28 Fg-1 and 0.001 - 2.8 Fg-1 of specific capacitance, respectively. Performance tests of EC measured with EIS and GCD methods respectively have 0.001 - 0.15 F and 0.001 -0.203 F of capacitance. © 2014 Elsevier Ltd.

Buchari E.,University of Sriwijaya
Procedia Engineering | Year: 2015

Park and Ride is one of Transport Demand Management (TDM) scheme, which is very popular in some congested city with wide parking area at the border line or outskirt area. Palembang is capital city of South Sumatera Province, which has three Terminals in the border area with surrounding kabupaten (district). Right now the Terminal is not functioned appropriately because many public transport vehicles are loading and unloading passengers outside the Terminal, or on the street nearby the Terminal. On the other hand, the city centre itself has been crowded of private vehicles (car and motor cycle). The current on street parking system has been no longer adequate. According to Cities Development Initiatives for Asia (CDIA) study 2011, about 1382 cars and 1431 motorcycles need a place to park in the city centre. The aims of this paper are to present the characteristics of trips surrounding the Terminal and to know their potential of accepting Park and Ride system, and to plan the program and policy regarding Park and Ride in Palembang. The Data was collected by doing Home Interview survey in Palembang, with 4000 sample of Households (Buchari, 2011). Method of Analysis is descriptive Analysis, Cross tabulation, matrices analysis and multimodal analysis. The data from previous study was used to analyze the interconnection Terminal location with trips from surrounding areas. The results showed the potential shifting from private vehicle user to park and ride user. © 2015 The Authors. Published by Elsevier Ltd.

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