bluuebunny/crossref_metadata_2025_split huggingface dataset:
Export Analysis of Major Commodities in Malaysia
Authors: Ismail N A , Talib B A , Mokhtar A 
Published: October 2019

Abstract
This study aims to investigate the factors associated with the commodity export demand and to explore and quantify the contribution of the commodity export to economic growth. The technique of (VECM) Vector Error Correction is applied to estimate the export and economic growth model. It tests whether there has been a long-run relationship between commodity export volume and exogenous variables such as own price, substitute price, exchange rate, world population and industrial production index. The results indicated that there is a long run relationship among variables. The result suggests that exchange rate have a negative impact to the palm oil, rubber and tin where depreciation may reduce export of these commodities. The findings of the research also show that the commodities export has mixed effect on economic growth in Malaysia. Export of petroleum, palm oil and sawlog has a positive and significant relationship with economic growth in the long run while only petroleum and palm oil contributed to the economic growth in the short run. The evidence of impulse response function shows that exchange rate and FDI shock have a relatively higher significant impact on all exports of major commodities and economic growth respectively. This study implies that export of major commodities in Malaysia should be treated as an engine of growth. The effective management of exchange rate and export promotion policies can play a significant role in increasing commodity exports thus will improve Malaysia economic growth.
Landslide Susceptibility of Agricultural Area in Lembah Gumanti, Solok - West Sumatra Province
Authors: Arlius F , Berd I , Sadewo R M 
Published: October 2019

Abstract
One of the factors that threaten food resilience in Indonesia is the natural disasters such as landslides. Cultivation of agricultural crops in hilly terrain with fairly steep slopes and high rainfall without regard to land conservation and good farmland cultivation practices will result in landslide disaster that could damage the irrigation and agricultural land. Soil movement is a consequence of natural dynamic phenomenon to reach new condition due to disturbance of balance in environment, either by natural or by human activity. Movement of the ground will occur on a slope, if there is a state of imbalance that causes the occurrence of a mechanical process, resulting in a part of the slope moving according to the force of gravity. The process of ground motion involves complex interactions between geological, geomorphological, hydrological, rainfall and landuse aspects. A research about landslide susceptibility of agricultural area has been conducted in Lembah Gumanti, Solok, West Sumatra Province. The research show that from the total area of 24,294 ha, high vulnerability zone is about 903 ha (4%), medium vulnerability zone is 6,913 ha (28%), and low vulnerability zone 16,478 ha (68%). Landslide vulnerability in agriculture area potentially arise on dry land farming (525 ha), paddy field (3 ha) and mixed garden (375 ha).
Non-destructive Evaluation of Fat Content of Coffee Beans Solok Radjo Using Near Infrared Spectroscopy
Authors: Yuwita F , Ifmalinda  , Makky M 
Published: October 2019

Abstract
Prediction fat of coffee beans in West Sumatra is still done manually by chemical methods, time-consuming, and costly. With the development of food technology, the estimation of the content of the beans to do with how quickly and efficiently using NIRS technology. NIRS can analyze the chemical content of foodstuffs nondestructive. This study uses Arabica beans Solok Radjo two maturity levels are 4 (ripe) and 5 (over ripe), 30 samples with weight of samples 6 grams. NIRS instrument used is the science and technology FT-IR-1516 with a wavelength of 1000-2500 nm. Fat tests conducted in the laboratory Instrumentation Technology Center for Agriculture. In this study, the data spectral coffee beans processed using PCA (Principal Component Analysis) after correlated with fat content processed by the method of PLS (Partial Least Square). The prediction results of calibration best fat obtained r = 0.999, R2 = 0.999, SEC = 0.008%, and RMSEC = 0.008%, validating the value of r = 0.998, R2 = 0.999, SEP = 0.009%, and RMSEP = 0.008%, of the model fat coffee beans can be identified by non-destructive evaluation using spectral analysis.
Individual Effect of UV-C Radiation and Hot Water Treatment on Harvested Quality of Chili
Authors: Fahmy K , Chatib O C , Cherie D , Maulida P , Sirtin A A , Susanto N , Nofiarli  , Violalita F , Nakano K , Jitareerat P 
Published: October 2019

Abstract
The aim of study was to determine the individual effect of UV-C radiation and Hot Water Treatments (HWT) in preserving quality of chili packed in Modified Atmosphere Packaging (MAP) under ambiet temperature storage. Chili was radiated by UV-C for 15 min and for 20 min, with HWT at 45 °C for 15 min and at 53 °C for 4 min, and untreated as control. After treatments, all fruits were packaged and stored at room temperature (25 °C) for 1 month. The results that untreated chilli could be stored for 7 days, treated chilli with UV-C 15 min and HWT at 45 °C for 15 min could be stored for 14 days, while chilli treated with UV-C for 20 min and HWT at 53 °C for 4 min could be stored for 17 days. Among all treatments, chili treated with UV-C for 20 min suppressed the disease severity dan maintained the harvested quality of chilli. This study suggests that combination UV-C irradiated with HWT under low temperature might be extended the shelf life of chilli.
Genetic Diversity Based on RAPD Marker of Ramie Plants (Boehmeria nivea [L.] Gaud) In West Sumatera
Authors: Mayerni R , Yusniwati  , Yulfa D , Chan S R O S 
Published: October 2019

AbstractThis research has been conducted at the Experimental Farm of Agricultural Faculty of Andalas University, two districts in West Sumatera (Lima Puluh Kota and Agam) and the Laboratory of the Department of Agronomy and Horticulture Agricultural Faculty, Bogor. The purpose of this study was to determine the genetic diversity of the ramie plants collection Experimental Farm, Agricultural Faculty of Andalas University and exploration at two districts in West Sumatera. This research was conducted by molecular characterization, using RAPD markers (Random Amplified Polymorphic DNA) with 5 primers (OPF 4, OPF5, OPH7, OPX2, and OPX 17). The samples used were 4 clones of ramie plants (Padang 3, Ramindo, Matur and Situjuah) with 3 replications. Fragments were sized with reference to the size markers and scored (present/absent). The similarity coefficients calculated and dendograms produced using NTSYS software (version 2.02). From the results of the study the results of the similarity level coefficient were 0.56-0.78, and formed 2 large groups (I, II). M1 and M2 clones are in group I, while in groups II (IIa and IIb). Group IIa (R1, R2, R3, P3, M1) and Group IIb (S1, S2, S3, P1).
Prediction Carbohydrate Content of Sweet Passion Fruit Seeds (140 Days After Flowering) Using NIR Spectra with Artificial Neural Network
Authors: Daulay D P , Andasuryani  , Fahmy K , Viyona M 
Published: October 2019

Abstract
This study purposed to develop estimation methods using NIR spectroscopy in determining carbohydrate content of sweet passion fruit seeds at the level maturity at 140 days after flowering and developing an NIR calibration model using an ANN (Neural Network) chemo metric technique. The research method used several stages, labeling the material preparation stage, the measurement stage using NIR, the chemical analysis stage and the data processing stage with artificial neural networks. At the reflectance input the highest R-Total value which the number of neurons in the hidden layer is 7 (R-Total is 0.870) and R-SNV pretreatment as the input of the highest R-Total value is found in the number of neurons with hidden layers which is 9 (R- Total is 0.949). Based on these results the development model is suitable as a predictive value, this can be seen from the regression value approaching 1.
Utilization of Artificial Neural Network (ANN) To Predict Fat Passion Fruit Seed Content (Passiflora ligularis) Based On NIR-S Value
Authors: Viyona M , Andasuryani  , Putri R E , Daulay D P 
Published: October 2019

Abstract
The research was conducted in July-October 2018 at the Laboratory of Food Processing Techniques for Agriculture, Center Instrumentation and AMGIS Laboratory of Agricultural Engineering, Andalas University, Padang. Using the experimental method between wavelength data and fat chemical data of passion fruit seeds. PC utilization as a grouping of data and input data on Artificial Neural Networks (ANN). ANN uses the matlab R2015a application with the TRAINLM training method, Dividerand as a grouping of data and performance based on Mean Squared Error (MSE). Random use of data for set train, set test and set validation. The data set is 70% of the total data, 15% of the other data is used for the set test model, the rest is used for testing the model through a set of validations of 15% of the total sample. The number of samples used was 180 samples. The best value from PC treatment is PC 6 in both original data and SNV. The best value of neuron treatment is on 5 PC 6 neurons in both original data and SNV. The correlation value resulting from the estimation model of passion fruit seed content is 0.85958 with a very strong level of relationship between predictive fat content and laboratory fat content. The best value for validation of MSE on PC 6 neurons 5 with SNV data is 0.95881.
The Influence of Preliminary Treatment on Cassava (Manihot utilissima) on the Quality of Analog Rice Produced
Authors: Harni M , Putri S K , Violalita F , Evawati  , Tazar N 
Published: October 2019

Abstract
The research of analog rice cassava has been conducted in the Laboratory of Food Processing Agricultural Polytechnic State of Payakumbuh, and the Laboratory of Agricultural Technology Andalas University, Padang. Research conducted with the aim to search for materials that can shorten the fermentation time of cassava which is usually by natural fermentation, so as to produce analog rice with the best quality. The design used in this research is Complete Random Design (CRD) with 5 treatments and 3 replications. One treatment as a control is cassava that is soaked naturally and 4 treatments with the addition of material in the form of curd, yeast of bread, yeast of tempe and yeast of tape. Advanced test carried out by means Duncan’s New Multiple Range Test (DNMRT) on the real level of 5%. Based on the research that has been done the treatment chosen is the treatment with the addition of bread yeast in fermentation (C). The results of the chemical test of analog rice with the treatment of the addition of bread yeast (C) are: water content 13,42%, ash content of 0,75%, a protein content of 1,30%, a fat content of 4,53% and starch content 70,25%.
POME: An Alternative Nutrient Source for Bio-Organic Plant Tissue Culture Media
Authors: Nadirah M N A , Awal A , Azma Y N , Sulaiman A 
Published: October 2019

Abstract
One of the methods in sustainable agriculture is transforming crop wastes into beneficial products such as bio-fertilizer, which will improve the soil fertility, preserving the natural sources, and cost-effective practices. Currently, these practices also need to be applied in plant tissue culture technology to enhance an eco-friendly and sustainable resources which are abundant and locally available. To date, the new bio-organic media derived from different types of agricultural wastes, especially from fruit wastes were successfully established. The objective of this study was to determine the efficiency of agricultural waste, i.e. Palm Oil Mill Effluent (POME) through a natural fermentation process as a potential nutrient source to substitute the existing standard and synthetic plant tissue culture media (PTC) such as Murashige and Skoog’s (1962) (MS) Medium, Woody Plant Medium (WPM), N6 (Chu) Medium and Gamborg’s (B-5) Medium, available in the market. 100 mL (v/v) POME solution was added with 100 mL (v/v) molasses and then were fermented naturally for 4 weeks in dark condition at room temperature. The results showed that the nutritional value of the fermented POME solution was higher than the synthetic MS basal salt medium. The new POME PTC medium was successfully formulated as a new bio-plant tissue culture media for in vitro regeneration of Musa acuminata.
Synthesis and Characterization of Some Bromochalcones Derivatives
Authors: E Susanti V H , Setyowati W A E 
Published: October 2019

Abstract
Chalcones are considered to be precursors of flavonoids and have variety of biological activities. Three of bromochalcones derivatives were synthesized by a green chemistry approach using grinding technique and their structure also confirmed. Synthesis of bromochalcone, 4′-bromo-4-methoxychalcone, 4′-bromo-3, 4-dimethoxychalcone, 4′-bromo-3, 4, 5-trimethoxychalcone were carried out using starting material of 4-bromoacetophenone through Claisen-Schmidt base catalyzed condensation. The structures of the synthesized compounds were confirmed by gas chromatography–mass spectrometry (GC-MS). The mass spectra of the compounds were showed corresponding molecular ion peak which was correlated with their molecular weight of that respected compound (4′-bromo-4-methoxychalcone = 317, 4′-bromo-3, 4-dimethoxychalcone = 347, 4′-bromo-3, 4, 5-trimethoxychalcone = 377).
Synthesis and characterization complex Cobalt(II) with sulfadiazine
Authors: Widowati M K , Rahardjo S B , Hastuti S , Ariyani B F 
Published: October 2019

Abstract
Complex of cobalt(II) with sulfadiazine has been synthesized in a ratio 6: 1 metal to ligand in methanol. The formation of a complex was characterized by a shift in the maximum wavelength (λmax) to the smaller wavelength (527 nm to 515 nm) which shows transitions 4T1g(F) → 4A2g dan 4T1g(F) → 4T1g (P). The percentage of cobalt in the complex measured by Atomic Absorption Spectrometer (AAS) showed the complex formula was Co(Sulfadiazine)3(NO3)2.(H2O)n (n = 2, 3, 4). The conductivity measurement indicated that the complex is 2 to 1 electrolyte. Thermal analysis with Differential Thermal Analyzer (DTA) indicates the presence of H2O in the complex. The formula of the complex was estimated as [Co(Sulfadiazine)3(H2O)3](NO3)2.H2O. The complex was paramagnetic with μeff = 4.59 – 4.97 BM in high spin state. Infrared spectra show a shift in the absorption of primary NH2 functional groups indicating that the functional group was coordinated to the central Co2+ atom monodentically. The geometry of the complex was probably octahedral.
Structure and Morphology of The (Ni, Co) Mo/Indonesian Natural Zeolite
Authors: Ichsan G M H A , Nugrahaningtyas K D , Widjonarko D M , Rahmawati F 
Published: October 2019

Abstract
The NiMo/Indonesian natural zeolite (NiMo/ZA) and CoMo/ZA catalysts are produced through the impregnation methods. These catalysts were characterized by using X-Ray Fluorescence (XRF), Fourier Transform Infra-Red (FTIR), X-Ray diffraction (XRD), and Scanning Electron Microscope (SEM). The XRF data show that the CoMo/ZA catalyst has a large amount of metal content more than NiMo/ZA. The FTIR spectra of catalyst show a shift of asymmetric stretching of TO4 group to a larger wavenumbers than the FTIR spectra of ZA. Meanwhile, the metal phase in the CoMo/ZA catalyst is CoO and MoO3, and the metal phase in the NiMo/ZA catalyst is NiO and MoO3.
Synthesis and characterization of vanadium doped Bi4Ti3O12 as photocatalyst material
Authors: Handayani R , Safitri W N , Aini N , Hardian A , Prasetyo A 
Published: October 2019

Abstract
One of interesting properties of Bi4Ti3O12 is photocatalyst. The band gap of Bi4Ti3O12 is 2.9 eV as results only work at ultraviolet wavelength range. Metal doped to Bi4Ti3O12 can reduce band gap energy. In this work, Bi4Ti3O12 was doped vanadium (Bi4Ti3-x
V
x
O12 with x= 0.05; 0.1; 0.15; 0.2) using solid state reaction method. X-ray diffraction data show that Bi4Ti3-x
V
x
O12 (x= 0.05; 0.1; 0.15; 0.2) were successfully formed with space group B2cb, however there is small impurities of VO2 phase. Scanning electron microscopy (SEM) images showed that the particle of all obtained Bi4Ti3-x
VxO12 (x= 0.05; 0.1; 0.15; 0.2) have shape platelet-like. Diffuse Reflectance Spectroscopy data showed that the energy band gap of Bi4Ti3-x
V
x
O12 decreased by increasing vanadium dopant.
The effectiveness of the activated carbon from coconut shell and corn cob to adsorb Pb(II) ion and it’s analysis using solid-phase spectrophotometry
Authors: Saputro S , Mahardiani L , Masykuri M , Jazuli A Z 
Published: October 2019

Abstract
This research aimed to know the mass ratio of adsorbent combination of activated carbon from coconut shell and corn cob to adsorb Pb(II) ion and it’s analysis using the solid-phase spectrophotometry (SPS). The technique of data collection is carried out by several stages, which are: (1) the production of carbonated coconut shell and corn cob using muffle furnace at a temperature of 350 °C for 60 minutes; (2) the activation of the coconut shell carbon using ZnCl2 15% activator and the corn cob carbon using HCl 1M, (3) contacting this adsorbent combination between activated carbon from coconut shell and corn cob for 20 mL of liquid simulations waste Pb(II) ion on variations ratio of 1:0; 0:1; 1:1; 2:1; 1:2; (4) the analysis levels of Pb(II) using SPS; (5) the characterization of adsorbents in the most optimum combination between activated carbon of coconut shell and corn cob using FTIR. The results showed that the adsorbent can increase the capabilities and the effectiveness of the absorption to Pb(II) ion and the optimum ratio from the comparison between coconut shell and corn cob is 1:2 with the absorption ability to adsorb Pb(II) ion in the simulations waste is 86.78%. SPS is an effective method with high sensitivity in the level of μg/L and the limit of detection (LoD) of 0.06 μg/L.
Influence of magnetic and electric field on I-V characteristic of the G4 DNA molecule
Authors: Apriyanti L , Yudiarsah E 
Published: October 2019

Abstract
The I-V characteristics of G4 DNA molecule in applied magnetic and electric fields has been calculated. We use DNA molecule in the form of stacked of 32 guanine quadruplex (G4) structures. The DNA molecule is contacted to the metallic electrode at both ends. The system under investigation is modeled using tight-binding Hamiltonian approach. Magnetic and electric field affects electron hopping constant following Peirels Phase Factor and Miller-Abraham, respectively. The result shows slight current increment with the magnetic field and current increment with electric fields after certain voltage value.
A control of TiO2 nanostructures by hydrothermal condition and their application: a short review
Authors: Hidayat R , Fadillah G , Wahyuningsih S 
Published: October 2019

Abstract
TiO2 (titanium dioxide) is an inorganic material that has many uses in various fields such as environment, sensor devices and solar energy conversion. Various method approaches have been developed for the synthesis of nanostructured TiO2, but the hydrothermal method is still considered the most effective method and provides many advantages in nanostructure formation because the methods can be controlled. In the present study, we will discuss the formation of TiO2 with various conditions on hydrothermal methods in TiO2 nanostructure formation. Generally, TiO2 nanoparticles can be obtained by hydrothermal methods. TiO2 precursors, pH, reaction time and also temperature are factors that influence the formation of TiO2 structures. The methods are commonly used because hydrothermal methods can easily control conditions to obtain a homogenous structure. The difference of TiO2 structure is very influential in its properties and activity performance.
One Pot and Sonically Assisted Synthesis of Fe3O4 and SiO2@Fe3O4
Authors: Saputra OA , Lestari WW , Wibowo FR 
Published: October 2019

Abstract
Magnetite (Fe3O4) and core-shell SiO2@Fe3O4 nanoparticles were successfully synthesized through a one pot assisted by sonication method. The products were morphologically, physically and chemically characterized using Transmission Electron Microscopy (TEM), N2 adsorption-desorption, and Fourier Transform Infra-red (FTIR). In this research, concentration of tetraethyl orthosilicate (TEOS), a precursor of SiO2, was varied by 1, 3 and 5 mmol in order to control the SiO2 shell thickness. The FTIR measurements showed that the increasing of TEOS concentration was parallel with the increasing of Si-O stretching vibration peak intensity revealing an enlargement of SiO2 shell thickness. It was proved by morphological study where the addition of 1 mmol of TEOS has approximately 2 nm of shell thickness while by using 5 mmol was ∼10 nm of shell thickness. Magnetite nanoparticle has 80.43 m2 g-1 of BET surface area but dramatically decreased to 55.74 m2 g-1 after incorporating of SiO2 (TEOS 5 mmol) caused by the presence of CTAB in pore channel.
Antipyretic properties of carica (Vasconcellea pubescens A.DC.) fruit and seeds ethanolic extract in experimental animals
Authors: Sasongko H , Widiasih P , Putri N L 
Published: October 2019

Abstract
Fever is the condition of body temperature which more than usual caused by an increase of central control temperature in the hypothalamus. An infection or virus usually cause this condition. Some of the active substances of plant secondary metabolites had been researched lower fever; they were flavonoids, saponins, and tannins. Carica (Vasconcellea pubescens A.DC) or mountain papaya is one of the fruits that had the compounds. This research purposed to know the antipyretic effect of ethanolic extracts of carica fruits and seeds towards Wistar rats. The study used pre-test – post-test only controls group design. Thirty Wistar rats were divided into six groups on each extract sample. Normal group was not given any treatment, negative control was given 2.5 mL aquadest, positive control was given acetaminophen syrup with the dosage 1.5 mL/kg body weight (b.w), and the dosages of carica fruit and seeds ethanolic extracts (EECF/EECS), there were 200, 400, and 800 mg/kg b.w. The rats were s.c induced fever with 20 mL/kg b.w 20% yeast suspension. Temperature measurement was performed every 30 minutes for 6 hours. Data processed using One Way ANOVA. The results showed that ethanolic extracts of carica fruits and seeds with a dosage of 800 mg/kg b.w were able to lower the temperature significantly (p < 0.05) towards negative control in Wistar rats.
Antibacterial Activity of Natural Paper from Banana Peel (Musa paradisiaca Linn.) with Additive Essential Oils
Authors: Setyowati W A E , E Susanti V H 
Published: October 2019

Abstract
Several essential oils have been evaluated as antibacterial agent in the production of natural paper from banana peel (Musa paradisiaca Linn.), namely cinnamon, clove, lime and lemon oil. The purpose of the research was to examine the antibacterial activity of the papers with additive of those several essential oils againt Staphylococcus aureus and Escherichia coli. Paper preparation was successfully carried out by alkalization method, using 4% NaOH at a temperature of 100 °C for 1 h. The essential oils as antibacterial agent were added with concentration 2.5% to the pulp (1:40). The antibacterial activities were tested using Kirby-Bauer disc diffusion method. All of the paper produced meet the standard of ISO 6519:2016 about Basic Paper for Laminated Plastic Wrapping Paper within the parameter of pH and water content. The result of the research showed that all of the paper with essential oils additive has antibacterial activity againt S. aureus, but only paper with cinnamon oil additive that have antibacterial activity againts E. coli. The use of cinnamon oil gave the largest inhibition zone diameter both on S. aureus and E. coli. Paper with cinnamon oil additive had inhibition zone diameter 18 mm on S. aureus (strong category) and 9 mm on E. coli (medium category).