bluuebunny/crossref_metadata_2025_split huggingface dataset:
Satellite-based monitoring of forest cover change in indonesia using google earth engine from 2000 to 2016
Authors: Fadli A H , Kosugo A , Ichii K , Ramli R 
Published: November 2019

Abstract
The Google Earth Engine (GEE) is a cloud computing system providing data analysis platform with various satellite based observation data and other earth observation datasets. Therefore, application of the GEE enable us to analyze terrestrial environemtal changes in an effective way. This study aims to test GEE capability to monitor forest cover change in Indonesia from 2000 to 2016 by performing raster and vector manipulations using Landsat-based forest cover datasets. Deforestation is one of the most important environmental problem in Indonesia, and monitoring of forest cover changes is urgent task for environmental protection. The found that GEE is very effective to analyze large amount of remote sensing data quickly, and estimated forest cover area in 2000 and its interannual variations in Indonesia. Factors affecting land cover in Indonesia will be elaborated in further detail in this paper.
Application of plastic optical fiber material as pH measurement sensor using loop configuration
Authors: Arifin A , Hardianti  , Yunus M , Dewang S 
Published: November 2019

Abstract
Plastic optical fiber testing as a sensor can be applied in pH measurement using loop configuration. It was made of a plastic optical fiber material with two types of peel, namely with cladding and without cladding. Sensor testing was done by dipping the sensor into buffer solutions with varying pH values. The light intensity from the LED will experience power losses due to the effect of adding the solution refractive index around the sensor, so the phototransistor will receive smaller the light intensity. Changes of light intensity in the optical fiber causes the output voltage read on the microcontroller and the computer decreases. The best measurement was obtained at sensor type of without cladding 4 loops with sensitivity 0.035 V/pH and resolution 0.029 pH. Aplication of plastic optical fiber as sensor for pH measurement has advantages such as low cost, real time, high sensitivity, accurate and simple measurement.
Stopping power and inelastic mean free path of 300 eV–50 keV electrons for lanthanum aluminate
Authors: Tahir Dahlang , Yulianti  , Suarga  
Published: November 2019

Abstract
SP (Stopping Power) and IMFP (Inelastic Mean Free Path) of lanthanum alumínate (La2O3)x (Al2O3)1–x was varied with x = 0.25, 0.34, and 0.5. for electron energy from 300 eV to 50 keV have been determined by using composite Simpson from the equation of Born Ochkur correction. The main parameter in determining the SP and IMFP is Energy Loss Function (ELF) which was obtained from the experimental reflection electron energy loss (REELS) spectra. The method in this study is convenient methods for determining SP for binary compound lanthanum aluminate.
Structure and mechanical properties of electrodeposited Ni-AlN/Si3N4 composite coating
Authors: Budi Esmar , Fathia Nurul , Indrasari Widyaningrum , Sugihartono Iwan 
Published: November 2019

Abstract
N1-AIN/Si3N4 composite coatings were successfully deposited on tungsten carbide by electrodeposition process. The influence of Si3N4 powder concentration on the microstructure, crystal structure and mechanical properties was investigated by using Scanning Electron Microscopy, Energy Dispersive Spectroscopy, X-Ray Diffraction and Vickers hardness tester, respectively. The results revealed that variation of Si3N4 concentration influenced the structure and mechanical properties of Ni-AlN/Si3N4 composite coatings. The fine surface morphology of composite was due to the inclusion of AlN and Si3N4 particles while it is rougher as the Si3N4 concentration was increased due to agglomeration effect and Ni crystal growth. The increase of microhardness is related to the particles dispersion- strengthening.
Quantitative analysis of X-Ray diffraction spectra for determine structural properties and deformation energy of Al, Cu and Si
Authors: Heryanto  , Abdullah B , Tahir D , Mahdalia  
Published: November 2019

Abstract
X-Ray Diffraction (XRD) method was used to analysis structural properties of Al, Si and Cu as cubic crystal system. Existence of Al, Si and Cu was investigated with the joint committee on powder diffraction standards (JCPDS) by 96-901-3104 for Si, 96-431-3215 for Al and 96-901-1605 for Cu respectively. In this paper we determine the concentration of our sample from the 3 or 4 peak area and the intensity of each peak. The content of Al, Si and Cu are 78,97%, 80,69% and 82,51% respectively. Relative texture coefficient (RTC) value investigated from diffraction by using h k l plane. Energy density, stress and strain were calculated using uniform density model (UDM), uniform stress deformation model (USDM), uniform deformation energy density model (UDEDM) and size-strain plot method. For the crystallite size we applied the Scherrer equation, Williamson-Hall (W-H) analysis and Size-Strain plot (SSP) method. High correlations the crystallite size found from the results by Scherrer, W-H, and SSP.
Enrichment of omega-3 fatty acids, waste oil by-products canning tuna (thunnus sp.) with urea crystallization
Authors: Wayan Suriani Ni , Komansilan Alfrits 
Published: November 2019

Abstract
Enrichment test of omega-3 fatty acids from tuna canning waste oil in Bitung North Sulawesi Indonesia have been conducted. The purpose of this study was to utilize tuna canning waste oil and enriched the concentration of omega-3 fatty acids with urea crystallization. The results showed that the characteristics of fish oil quality of tuna canning waste 0.9% moisture content, free fatty acids (FFA) 3.4%, copper (Cu) 0.1 ppm, iron (Fe) 2.5 ppm and phosphorus (P) 32,5 ppm still meets IFOMA quality standards Liquid fatty acid profile contains total SFA 33.7%, 27.6% PUFA, 1.4% omega-6 fatty acids, omega-3 fatty acids 25.9%, EPA 4.2% and DHA 21.4%, MUFA 18.8%, omega-9 fatty acids 13.9%, while concentrations of omega-3 fatty acids contained a total SFA of 7.7%, PUFA 70.9%, omega-6 fatty acids 0.8%, omega-3 fatty acids 70.1%, EPA 4.2% and DHA 21.4%, MUFA 2.7%, omega-9 fatty acids 1.5%. The urea crystallization process increases the levels of polyunsaturated fatty acids (PUFAs) such as omega-3 (EPA and DHA.), the enrichment rate is 2.7 times.
Effect of the indigenous trichoderma application on germination of black glutinous rice seed
Authors: Anhar Azwir , Permata Sari Novita , Advinda Linda , Hilda Putri Dwi , Handayani Dezi 
Published: November 2019

Abstract
Trichoderma is one of the rhizosphere microorganisms that are able to play as plant growth promoting fungus (PGPF) because it can produce IAA hormone. The ability of Trichoderma as PGPF has been extensively studied, but the indigenous Trichoderma effect derived from the rhizosphere of rice crops on local rice variety of west Sumatera has not been widely studied. This study aims to determine the effect of Trichoderma application on black glutinous rice seed germination. The experiment is done by soaking the local black sticky rice seeds with Trichoderma spore suspension with 107 spore / mL density for 24 hours. The germination rate of each isolate observed at seven days after sowing. The results showed that the type of isolate affected the rate of germination of rice seeds. The highest germination was found in isolates from the rhizosphere of rice varieties cisokan balang (94%) and the lowest was in the control (74%).
The fractions of phenolic and flavonoid compounds of the leaves of north Sulawesi’s bashful plant (mimosa pudica linn)
Authors: Rahardiyan D , Poluakan M , Moko E M , Ngangi J 
Published: November 2019

Abstract
The bashful plant or the mimosa plant has a history of use for treatments in various ailments. Various parts of this plant maybe used, but most commonly the leaves, stems, roots and flowers. This research was aimed to investigate the existence of phenolic and flavonoids in the Mimosa pudica Linn leaf extracts in solvents of different polarities. During this research dried leaves and wet leaves were respectively macerated in 70% ethanol and then reduced by rotary evaporators. Fractions were obtained by means of HPLC (High Pressure Liquid Chromatography) with 3 different solvents at different polarities (hexane, n-butanol and ethyl-acetate). The results indicated that flavonoid was found mostly in the ethyl-acetate fraction from dry leaves (1.08% w/w). Phenolic was mostly detected in extracts of the dry leaves in the n-butanol (7.27% w/w) and the wet leaf residues (8.68% w/w). Results indicates that with the majority of the detection of phenolics and flavonoids in the mildly polar to strong polar solvents, thus oral intake by means of leaf infusions (such as tea/brew) would be quite effective. Complete extraction process of these compounds and encapsulating them would always be the most effective method of intake while economically the method would raise questions.
Demographic profile and pap smear cytology in female sexual workers at primary health care Bestari Medan-Petisah
Authors: Anggraini D R , Feriyawati L , Wahyuni A S , Widyawati T , Sari M I , Syarifah S 
Published: November 2019

Abstract
Sexual workers are one of risk the cervical cancer has a long latent period. Cervical cancer is the main cancer in Southeast Asia and the second most common cancer in Indonesia. In addition, Indonesia is the second common country cause of death in women after Vietnam. The aim of this study was to evaluate demographic profile and cervical cytology in Female Sexual Workers (FWSs) at Primary Health Care Bestari, Medan-Petisah, North Sumatera. This study has recruited 70 FWSs who has worked for at least 2 years and are not pregnant. Participants fill out the questionnaires include age of participants, age at first sexual intercouse, and life styles (smoking of cigarette and consumption of alcohol). Pap smear test from cervical smear of 70 FWSs were conducted using Papanicolaou staining. The result showed most of the FWSs of sexually-active women less than 30 years old reported 54,28% and 45,72% more than 30 years old. The first sexual intercourse showed 18-20 years old as much as 54,29%, life styles of smoking and consumption alcohol was 51,4% and 10% respectively. Pap smear cytology showed 52,9% was inflammatory smear, 15,7% was A squamous Cells of Undetermined Significance (ASCUS), 11,4% was Low-grade Squamous Intra epithelial Lesions (LSIL). Most of FWSs described inflammatory smear, although a small portion had been found of ASCUS and LSIL. The chronic inflammation can develop to be carcinogenesis.
Bioinformatic analysis of truncated envelope protein in C-terminal stem-anchor region: as strategies for increasing protein secretion
Authors: Putri D H , Fiffendy M 
Published: November 2019

Abstract
One type of Dengue vaccine candidate that has the potential to be developed is DNA vaccine based on the DENV envelope gene. Constraints in developing vaccines are low secretion of envelope proteins. One of the efforts made to increase the secretion of envelope protein is by deletion the stem / anchor area. The purpose of this analysis was to analysis the effect of cutting the stem / anchor region on character and structure of the DENV E protein. Analysis of composition, profile, location and structure of proteins was using http://www.expasy.org, TMHMM, and http://bioinf.cs.ucl.ac.uk/psipred. Deletion of the stem-anchor region was changes the general properties of the protein, as well as the protein topology. However, the mutations did not change the 3D structure of main protein domain.
Effect of wheat grass juice (triticum aestivum l.) against the erythrocytes and hemoglobin in male mice (mus musculus l.) anemia induced by sodium nitrite
Authors: Yuniarti E , Hasanah L , Advinda L , Indika P M 
Published: November 2019

Abstract
Anemia is one of the most common health problems found in Indonesia. Anemia is characterized by the low number of erythrocytes and hemoglobin in the blood caused by low levels of iron in the body. Wheat grass (Triticum aestivum L.) contain high existence of iron is supposed to be able to increase erythrocytes and Hb level in mice (Mus musculus L.). Completely Randomized Design was used in this experiment, consisting of 5 treatment (K1: without NaNO2 and WGJ (wheat grass juice), K2: given the NaNO2 without given the WGJ, P1: WGJ 25%, P2: WGJ 50%, and P3: WGJ 75%) and 5 replication. The parameters observed were the male mice erythrocytes and the Hb levels before and after being given the wheat grass juice. The data were analyzed using ANOVA then continued DNMRT test with a 5% level. The results showed that giving wheat grass juice for 14 days can increased the eryhrocytes and Hb levels in male mice. The most noticeable impact is the treatment with the highest dose i.e. P3 (WGJ 75%).
The effect of the swietenia mahagoni seed extracts on the production of collagen in human fibroblast cell (HSF1184)
Authors: Hartati  , Salleh Liza Md , Che Yunus Azizi , Abd Azis Azila , Pagarra Halifah , Rachmawaty  
Published: November 2019

Abstract
We have used the in vitro sircol collagen test to investigate the effects of Swietenia mahagoni seed extract on collagen production in human fibroblast cells (HSF1184). The results showed that Swietenia mahagoni seed extract with concentrations of 0.001, 0.01 and 0.1 mg / mL caused stimulation in the synthesis of type I collagen in HSF1184 cells. Although, three concentration of SC-CO2 and soxhlet that showed no statistically significant of collagen on the HSF1184 when compared with the negative control, while LA (fibroblast cells with pure Linoleic acid as supplement in culture medium) gave significant effect on the collagen production.
The potential of lactic acid bacteria to improve the quality and number of carnocine during fermentation process of Bakasang as a functional food
Authors: Lawalata Helen J. , Rungkat Jovialine A. 
Published: November 2019

Abstract
The objectives of the research are to study the potensial of lactic acid bacteria to inhibit the growth histamine-producing bacteria, inhibit the formation of indicator component off-flavor of bakasang and increasing the amount of carnosine as a bioactive peptide. The results indicated that Pediococcus sp.B5.1 and Pediococcus sp.B1.0 were able to increase the amount of carnosine by 9.16 x and 8.92 x, able to inhibit the growth histamine-producing bacteria, soluble proteins increased by 10.4% and 10.5%, capable of inhibit the formation of histamine 5.8 mg / 100g and 5.9 mg / 100 mg, TVN (47.2 mg / 100gr and 45.6 mg / 100g), and TMA (24.2 mg / 100g and 22.6 mg / 100 g ). This shows that the two isolates of BAL are able to improve the quality and maintain the safety of fermented foodsbakasang and that most the impotantly can increase the potential of bakasang to become functional food because it can increase the number of carnosine.
Utilization and management of landscape unit in Dayak ngaju community in three villages, Mantangai sub-district, Kapuas Regency, Central Kalimantan
Authors: Puspita Sari Indri , Nisyawati  , Rohmat Sofiah 
Published: November 2019

Abstract
Dayak Ngaju community especially in three villages, which are Tumbang Muroi, Tumbang Mangkutub, and Katimpun in Mantangai Sub-district, Kapuas Regency, Central Kalimantan has used environment unit as a place to fulfill the community’s daily needs. The perception of the community towards each landscape unit utilization has been held in July 2018. The result of classification and utilization of the landscape unit is a belief and trust of the people which is able to influence the perception of the community towards sustainable utilization and management of the environment. Thus, this research provides explanation about utilization, development, and management based on Dayak Ngaju community norm in order to sustainably conserve the natural resources in the future.
Characterization extrinsic factors of immobilized cells thermoxilanolytic bacteria in producing xylanase
Authors: Irdawati I , Putri D D , Syamsuardi S , Agustien A , Rilda Y 
Published: November 2019

AbstractEnzyme is one of important commodity in industrial world. The majority of industrial enzymes are produced by microorganisms through fermentation. The use of enzymes is largely as a biocatalyst in chemical transformations. Currently there are about 400 known enzymes and about 200 are used commercially. The enzyme industry has grown rapidly and occupies an important position in the field of industry one of which is xylanase enzyme. Xylanase can be produced by molds and bacteria through a fermentation process. Groups of bacteria that are known to produce xylanase are Bacillus and Clostridium. In today’s microbial use of thermophilic bacteria has commercial value because it is able to produce stability of heat-resistant enzymes. In producing enzymes cell immobilization techniques are used to facilitate the purification of products, increase productivity and ease in controlling cell stability. The aim of this study was to Characterization Extrinsic Factors of Immobilized Cells Thermoxilanolytic Bacteria in Producing Xylanase. This research was conducted in June 2017- June 2018 in Laboratory of Microbiology FMIPA UNP. This research was using descriptive method. This research conclusion that temperature effect on xylanase activity with optimum temperature was 70°C and pH affects the xylanase activity with the highest pH was 7.5.
Cellulase induction enzymes characteristics of hindguts of endemic termites of North Sulawesi
Authors: Ngangi Jantje , Mauren Moko Emma , Rahardiyan Dino 
Published: November 2019

Abstract
The necessity for enzyme utilization in various industrial applications and reducing production cost for a more economical process compelled this research to seek for an alternative source of endemic enzyme for various sources cellulotic enzymes. The termites hindgut is known as a fermentor chamber of its own containing bacterial isolates with the potential to induce cellulosic substrates. Series of research have been conducted to obtain cellulolytic potential bacterial isolates characterized biochemically and molecularly. The purpose of this research was to determine the enzyme characters of cellulolytic bacterial from the hindguts of endemic termites of North Sulawesi. Screening results from various bacterial isolates from hindguts of local termites of several regencies from North Sulawesi identified Bacillus cereus from the hindgut of Odontotermes javanicus from South Minahasa (North Sulawesi). This Bacillus cereus isolate had the best cellulolytic potential by exhibiting a cellulolytic index of 1.75 cm on a selective media of CMC, with the best enzyme production on the 6th day with the activity of 0.0054U/ml.
Cytological features of pap smear of multiparous women with mycoplasma hominis and ureaplasma urealyticum infection at outpatient clinic in medan
Authors: Feriyawati L , Nasution TA , Anggraini DR , Wahyuni AS , Widyawati T 
Published: November 2019

AbstractMycoplasma hominis and Ureaplasma urealyticum were commensal pathogenic- potential bacterias in the female urogenital tract and may cause of newborns death. Several studies have suggested a correlation between cervical cytology and Mycoplasma genitalium and Ureaplasma urealyticum infections. It was a cross sectional design carried out on 50 multiparous women in an outpatient clinic in Medan in 2018. The cervical cytology features observed were reactive cellular change (RCC), cannonballs, predominance of coccoid bacteria, clue cells, and large number of neutrophils. All cytology features were negative from 3 (6.0%) subjects that had Mh infection. 9 (18.0%) subjects with Uu infection showed negative result of RCC, 9 (100.0%) were positive cannonballs, 3 (33.3%) were predominance of coccoid bacteria, 1 (11.1%) were positive clue cells and 7 (77.8%) had large number of neutrophils. Cytology finding of 38 (76.6%) subjects with no infection of Mh and Uu revealed 10 (26.3%) had RCC, 28 (73.7%) were positive cannonballs, 19 (50.0%) were predominance of coccoid bacteria, 2 (5.3%) were positive clue cells and 16 (42.1%) had large number of neutrophils. Non-specific cytological features were found in Mycoplasma infection. Specific features found in Ureaplasma infection but need to be traced to the infection of other organisms in group non Mycoplasma and Ureaplasma infections.
The effect of hyptis suaveolens (l.) poit extract on the growth of sclerotium rolfsii with in-vitro
Authors: Chatri M. , Handayani D. , Primayani S.A 
Published: November 2019

Abstract

Sclerotium rolfsii is a fungus that has a wide range of host and high pathogenicity that can cause stem rot, root rot, and wilt in plants. Diseases caused by S. rolfsii can be solved by using synthetic or chemical fungicides. The use of synthetic or chemical fungicides on an ongoing basis can have a negative impact on human health. Natural pesticides derived from plant leaf extracts are explored to treat plant diseases. One of them is Hyptis suaveolens (L.) Poit. The compounds contained in this plant are alkaloids, flavonoids, tannins, and suaveolic acid. This study aims to examine the effect of H. suaveolens (L.) Poit. extract and the most effective concentration in inhibiting the growth of S. rolfsii. H. Suaveolens (L.) Poit. leaf extract was prepared by maceration method using 96% ethanol. The leaf extract solution was evaporated using a vacuum rotary evaporator. The concentration used is 0% (control), 5%, 10%, 15%, and 20% with 4 repetitions. The data obtained were analyzed using one way ANOVA and Duncan test. The results showed that H. suaveolens (L.) Poit.leaf extract could inhibit the growth of S. rolfsii and the most effective concentration was at concentration 15% with 58% inhibition percentage.
Analysis of turmeric extract (cucurmadomestica) as natural preservative of tofu to SGOT levels and hepatic tissue structure of male white rats (rattusnorvegicus) wistar strain
Authors: Widiyanti N L P M , Santiasa I M P A , Citrawathi D M , Ristiati N P , Mulyadiharja S , Rupini C I D 
Published: November 2019

Abstract
The purposes of this research were: (1) to determine levels of SGOT (Serum Glutamate Oxaloacetate Transferase) of wistar rats after being given preserved tofu using water/aquadest, formalin, and turmeric extract with various concentrations, and (2) to identify histopathology images of rat liver after being given tofu which is preserved using formalin, turmeric extract, and soaked with water/aquadest. This true experimental research was designed with Randomized Post Test Only Control Group Design. The sample used was male white rat (Rattusnorvegicus) wistar strain of 40 individuals. SGOT levels were analysed using one way ANOVA statistic test and histopathology images of rat liver were analysed descriptively. The results of this research show that: (1) there has been different SGOT levels among male white rat (Rattusnorvegicus) wistar strain due to preserved tofu using turmeric extract withvarious concentrations of 20%, 40%, and 60%, (2) hepatic tissue structure of rats that is given tofu with turmeric extract 40% and 60% suffered from structural damage of its liver, while the rats given with tofu with turmeric extract 20% obtained a normal liver cell structure.