Jayapura, Indonesia
Jayapura, Indonesia

Universitas Cenderawasih is a university in Jayapura, in the province Papua, Indonesia. The university is the leading educational institution in the province.The university has faculties in economics, law, teacher training and education, medical, engineering, and social and political science. Until 2002 the university had a faculty of agricultural science at Manokwari, which was then separated to form the Universitas Negeri Papua. The university is divided into two areas: mainly the "Kampus lama" which is in the Jayapura suburb of Abepura and the "Kampus baru" which is in the hillside of Waena walley. Wikipedia.

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Mandik Y.I.,Cenderawasih University | Mandik Y.I.,Prince of Songkla University | Cheirsilp B.,Prince of Songkla University | Boonsawang P.,Prince of Songkla University | Prasertsan P.,Prince of Songkla University
Bioresource Technology | Year: 2015

This study aimed to optimize flocculation efficiency of lipid-rich marine Chlorella sp. biomass and evaluate its composition in different cultivation modes. Among three flocculants including Al3+, Mg2+ and Ca2+ tested, Al3+ was most effective for harvesting microalgal biomass. Four important parameters for flocculation were optimized through response surface methodology. The maximum flocculation efficiency in photoautotrophic culture was achieved at pH 10, flocculation time of 15min, Al3+ concentration of 2.22mM and microalgal cells of 0.47g/L. The flocculation in mixotrophic culture required lower amount of Al3+ (0.74mM) than that in photoautotrophic and heterotrophic cultures (2.22mM). The biomass harvested from mixotrophic culture contained lipid at the highest content of 42.08±0.58% followed by photoautotrophic (32.08±3.88%) and heterotrophic (30.42±1.13%) cultures. The lipid-extracted microalgal biomass residues (LMBRs) contained protein as high as 38-44% and several minerals showing their potential use as animal feed and their carbohydrate content were 16-29%. © 2015 Elsevier Ltd.

Cheirsilp B.,Prince of Songkla University | Mandik Y.I.,Prince of Songkla University | Mandik Y.I.,Cenderawasih University | Prasertsan P.,Prince of Songkla University
Aquaculture International | Year: 2016

Marine microalgae are used in aquaculture as a suspension to feed young fishes and shrimps. Marine Chlorella sp. is one of the most attractive marine microalgae because in addition to pigments it can accumulate lipids at a high content (>30 %) and release exopolymeric substances (EPSs) into the culture medium. This study aimed to evaluate the optimal cultivation of marine Chlorella sp. as potential sources of lipids, EPSs and pigments. Among the culturing regimes tested, mixotrophic cultivation mode produced the highest yields of biomass, lipids and EPSs. Several factors affecting mixotrophic cultivation were optimized. An increase in light intensity up to 65 μmol m−2 s−1 and carbon dioxide up to 10 % v/v in air enhanced both biomass and product formation. An increase in glucose concentration up to 1 % w/v enhanced biomass and EPS yields but decreased lipid and chlorophyll contents. A semi-continuous cultivation under optimal conditions produced microalgal biomass of 2.76 g L−1 with a high lipid content of 44.9 % and EPS of 1.46 g L−1. This study has also shown that the microalgal lipid and EPS have potential to be used as biodiesel feedstocks and bioflocculants, respectively. The concomitant production of these valuable products together with the microalgal biomass would be a potential way to offset the production cost and contribute greatly to developing industrialized microalgae cultivation. © 2015, Springer International Publishing Switzerland.

Pangau-Adam M.,University of Gottingen | Pangau-Adam M.,Cenderawasih University | Noske R.,Charles Darwin University | Muehlenberg M.,University of Gottingen
Human Ecology | Year: 2012

It is well known that wild game provides a significant proportion of the dietary protein of the indigenous people of the eastern half of New Guinea (PNG), but almost nothing is known of its importance in the western half (the Indonesian province of Papua or Irian Jaya). We quantified hunting effort, harvest rates and wild meat consumption and sale in the Jayapura region of north-east Papua through interviews with 147 hunters from 21 villages and meal surveys in 93 households. Ten species of mammals, seven species of birds and at least two species of reptiles were harvested in our study area, but the introduced wild pig and rusa deer were the major target species. Hunting in our study area has shifted from a purely subsistence activity towards a more commercial form at least partly due to the emergence of markets created by Indonesian transmigrants. Although the hunting of non-indigenous and certain native species might be sustainable, the maintenance of populations of large threatened species will require sensitive management. © 2012 The Author(s).

Supeno S.,Cenderawasih University | Supeno S.,National University of Malaysia | Daik R.,Cenderawasih University | Daik R.,National University of Malaysia | El-Sheikh S.M.,Central Metallurgical Research and Development Institute
BioResources | Year: 2014

The synthesis of a macro-initiator from cellulose in mixtures of zinc-based ionic liquid and polar solvents including deep eutectic solvent, dimethylformamide, acetone, and tetrahydrofuran (THF) was studied. The results of FTIR and NMR spectroscopies indicated that the cellulose-based macro-initiator can only be obtained in an inert ether solvent, THF. When the amounts of cellulose and zinc-based ionic liquid were fixed at 0.5 g and 18 mL, respectively, the degree of substitution of the cellulose-based macro-initiator obtained was increased from 11.0% to 17.4% as the reaction temperature was increased from room temperature to 40 °C, as calculated from TGA thermograms. When the amount of cellulose was cut in half, a degree of substitution of 27.5% was achieved due to lower viscosity and better homogeneity of the reaction medium. A green, new, and relatively cheap approach has been shown to be suitable for synthesizing a cellulose-based macro-initiator.

Brodie J.F.,University of British Columbia | Pangau-Adam M.,Cenderawasih University
ORYX | Year: 2015

Cassowaries are important seed dispersers in tropical rainforests of New Guinea, but little is known about their population ecology or their responses to human disturbance. We used camera traps to measure the occurrence, local abundance, and activity patterns of northern cassowaries Casuarius unappendiculatus in lowland forests near Nimbokrang, Papua, and dwarf cassowaries Casuarius bennetti in the Arfak Mountains, West Papua. Our goals were to assess human impacts on cassowaries at multiple spatial scales and to measure their activity patterns over an elevational divide. At fine spatial scales local abundance of cassowaries was strongly reduced in areas frequented by humans. At larger spatial scales the distance to the nearest village or drivable road did not affect local abundance but altered the stage structure of the individuals detected, with a higher proportion of juveniles relative to adults. Local abundance of cassowaries was unrelated to site usage by introduced pigs. Both populations studied were strongly diurnal and their activity patterns were not significantly different. Efforts to control hunting remain critical to sustaining cassowaries and the seed dispersal services they provide. Copyright © Fauna & Flora International 2015

Tanjung R.H.R.,Cenderawasih University | Ngili Y.,Cenderawasih University
Der Pharma Chemica | Year: 2016

This research objective to investigate the interaction between the bacterium E. coli with the components of the ethanol extract of herbs as a chemical library (a collection of various chemical compounds) on the nature of biological materials in the province of Papua. E. coli as a target is one of the model organisms used in new drug development (drug discovery) in this study. This model is also consistent with the research of the human genome in an effort to balance the new strategy in the diagnosis, treatment, and prevention of disease. The interaction was investigated by growing the bacteria on solid media containing ethanol extracts of herbs, herbal ethanol extract encounters with bacterial chromosomal DNA by dot blotting method and the results observed by thin layer chromatography (TLC) and high performance liquid chromatography (HPLC). On the growth of bacteria on solid media containing fungi, bacteria continue to grow so that interaction can not be observed directly, while the method of TLC increased value retention factor (Rf) of ethanol extract of herbs before and after the interaction with DNA. For the eluent composition of methanol: Water (6:4), the ethanol extract of herbs that have not diinteraksikan have Rf of 0.84 increased to 0.94 after DNA interactions. The results of the HPLC analysis provides more detailed information about the interactions that occurred with a reduction in height and broad peak at a retention time of 2.67; 12.8; and 16.9 min. This most likely indicates an interaction between the molecules of DNA with the compounds contained in the ethanol extracts of herbs.

Research related to MDR-TB have been done either to determine the nature of resistance, nucleotide sequence analysis, determining the position of a mutation in the region Mtb, phylogenetic analysis, and determination of the mechanism of drug resistance through in silico analysis of biomolecular. Due to a mutation of rpoB, particularly in the hotspot or RRDR (rifampin resistance-determining region), then RIF could not inhibit the action of RNA polymerase because it can not bind β-subunit, causing resistance to RIF. Meanwhile, INH requires activation process by the catalase-peroxidase enzyme produced by M. tuberculosis. Most of INH resistance occurs due to mutations in katG gene, the gene that produces the enzyme catalase-peroxidase, so that INH can not be converted into an active form. Currently identified katG mutations cause only resistance mutations in codon 315. A small part of INH resistance can occur because of a gene mutation InhA, ahpC and kasA, as well as other genes that correlate. Here, we reported that results of analysis performed by determining the nucleotide sequence of DNA segments using the forward and reverse primer amplification product on multiplex PCR. The primer pair amplifying the length of approximately 0.25 kb and 0.44 kb, respectively for the rpoB and katG. Primer rpoB nucleotide flanking region between 1521 and 1730, or between codons 507 and 576. Thus, a hotspot for nature resistant to rifampin or also called RRDR located between codons 507 and 533 amplify entirely. Meanwhile, the determination of the nucleotide sequence of katG segment bounded by the nucleotide sequence of 675 and 1104. This research has the potential to determine the appropriate drugs and vaccines in the future through cooperation among various fields of science: medical clinics, pharmacology, molecular biochemistry, biostatistics, and molecular microbiology.

Sufaati S.,Cenderawasih University | Agustini V.,Cenderawasih University | Suharno,Cenderawasih University
Biodiversitas | Year: 2016

The aim of the study was to identify endophytic fungi associated with the roots of terrestrial orchid Phaius tankervilleae (Banks) Blume, Dendrobium lancifolium A. Rich var. papuanum and Calanthe triplicate (Willem) Ames from Papua, Indonesia. The endophytic fungi were isolated from the transversal section of the orchid roots. Identification of the endophytes was carried out based on the morphological characters. The phylogenetic analysis of nucleotide sequences generated from ITS rDNA region of the endophytic fungi isolated from P. tankervilleae showed that those isolates were determined as Fusarium solani. This is the first report of F. solani found as endophyte of P. tankervilleae in Papua. While the ITS rDNA of Fusarium isolated from C. triplicata need to be sequenced for further identification. © 2016, Society for Indonesian Biodiversity. All rights reserved.

Ohee H.L.,Cenderawasih University
Biodiversitas | Year: 2016

New Guinea’s freshwater fish diversity may reach 400 species, twice the number of fish recorded in Australia. However, New Guinea’s freshwater fishes are facing rapid and poorly-planned social and economic developments, which have accelerated both habitat loss and degradation, impacting its unique biodiversity and threatening natural ecosystems. This study documents freshwater fish diversity and threats due to habitat conservation from oil palm development in the Timika Region, Papua. Fishes were sampled in canals, creeks, streams and rivers in the concession area of Pusaka Agro Lestari Company (PT. PAL) using seine and hand nets and a spear gun. Twenty two freshwater fish species in 15 families and 15 genera were recorded from the area. One of them is an endemic species of Timika (Glossamia timika), one rainbowfish species with a restricted Southern New Guinea distribution, and 12 other native fishes. Land clearing leads to increase water turbidity and sedimentation, water temperature, and pollution which are potential threats to native fishes and their habitats. The fact that PAL’s concession is part of distribution area of known distribution of G. timika in Timika vicinity, habitat conversion to palm oil elevates the threat to this species. Hopefully, PT. PAL will adopt necessary conservation measures to mitigate the potential impact during the land clearing, especially, if they leave riparian buffer regions intact to protect aquatic habitats when clearing land. © 2016, Society for Indonesian Biodiversity. All rights reserved.

Innah H.,Kumamoto University | Innah H.,Cenderawasih University | Hiyama T.,Kumamoto University
APAP 2011 - Proceedings: 2011 International Conference on Advanced Power System Automation and Protection | Year: 2011

This paper proposes a Voltage Stability assessment of Power System in real time operation using Radial Basis Function Neural Network (RBF NN). One of the methods which widely used for assessing Voltage Stability is Index Stability (L-index). The indicator obtained from fundamental Kirchhoff Law which is simple in numerical calculation for steady state flow analysis. Input parameters for index calculation taken from real time measurement in the system which provides faster Recently, Phasor Measurement Units (PMUs) is a advanced method to get the information of system parameter in the wide operation with high rate data. Due to the uneconomical reason and unnecessary to place one bus for one PMU, therefore optimization placement has been applied. However, the selection of PMUs locations can be seen as a reduction of input parameters, which require for index stability calculation. To solve the lack of input parameter problem, a trained data of RBF NN has used to predict index stability. This study using 14 bus IEEE system to test the propose method and the result presents the performance of the network is sufficient to predict the index stability. © 2011 IEEE.

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