bluuebunny/crossref_metadata_2025_split huggingface dataset:
Evaluation of shelf life of various carrot genotypes planted on three different highlands
Authors: Rahayu S T , Soedomo P , Azwani N , Asgar A 
Published: July 2019

Abstract
Carrot contains quite high nutrition, especially carotenoids, which function as antioxidants. This research aimed to evaluate the shelf life of various candidates among carrot genotypes that will be released as varieties. The research was applied toward those candidates which had been planted on three different locations were Cipanas, Garut, and Lembang. The evaluation was run at Postharvest Laboratory of Indonesian Vegetable Research Institute (IVEGRI), Lembang from March until July 2016. Shelf life was tested throughout quantitative evaluation using a hedonic test which admitted 15 untrained panelists and quantitative evaluation using measurement equipment. Parameters observed on carrot sensorial properties were colors and textures. Quantitative evaluation (method using equipment) applied for texture and weight loss parameters. Subsequently, correlation analysis was used to find out the relation between variable x (qualitative) and variable y (quantitative). Statistical analysis was run by using PKBT STAT. The result showed an interaction between genotypes and different planting locations toward carrot shelf life. Independently, planting locations showed a significant effect on carrot shelf life. Meanwhile, different genotypes showed a non-significant effect in carrot shelf life. All genotypes showed a non-significant difference in carrot shelf life. However, genotype F showed the longest shelf life 3three days, whereas genotype C showed the shortest shelf life two days at room temperature in Lembang.
Study of season onset based on water requirement assessment
Authors: Wati T , Kusumaningtyas S D A , Aldrian E 
Published: July 2019

Abstract
The criteria of season onset and withdrawal in Indonesia determined by Agency for Meteorology Climatology and Geophysics (BMKG) which need a month to confirm the period of the wet season and dry season. The determination of season onset based on the amount of 10-day rainfall equal to or more than 50 millimeters (mm) followed by the next two 10-day rainfall (the amount of monthly rainfall equal or more than 150 mm) for the wet season and vice versa. The determination of 150 mm/month based on water requirement using the reference of evapotranspiration (ETo) in the territory of Indonesia at 5 mm per day. This paper evaluates the determination of season onset by comparing it based on the ETo value of 5 mm/day and ETo from observation data of pan evaporation in the islands of Java and Bali in the period 2003 - 2017. The result of the study shows that the difference of the dry season onset up to 3 months which 25.9 % of stations have no difference, 40.7% have 1-month difference, 22.2% have 2 months difference and 11.1% have 3 months difference. The difference of wet season onset show 40.7% of stations have 1-month difference and 55.6% have no difference. The ETo value of 5 mm/day for criteria of season onset is appropriate and the difference of up to 3 months is still sufficient for early warning purpose.
A strategy for reducing methane emission using hybrid rice variety
Authors: Kartikawati R , Yulianingsih E , Yuniati I F , Wihardjaka A 
Published: July 2019

Abstract
Hybrid rice varieties are widely cultivated in the farmer because of high yield production compared to inbred variety. However, the agronomic traits supported to the high yield are expected to release GHG emission. Therefore, a study to investigate the effect of hybrid rice varieties on reducing methane emission in flooded rice filed was conducted at Indonesia Agriculture Environment Research Institute. Eight commercial hybrid rice varieties, namely Mapan 05, Arize Gold, Intani, Sembada 168, Sembada 868, Hipa 8, Hipa 18 and Hipa 19 and one inbred rice variety (Ciherang) were used for this study during the dry season of 2018. All rice varieties were cultivated by transplanting system on 21 days old seedling with 20 cm x 20 cm plant spacing, fertilizer doses are 120 kg ha−1 N, 45 kg ha−1 P2O5 and 60 kg ha−1 K2O. The water level was maintained on 5 cm above the soil layer. Methane gas was capture using a closed chamber method and analyzed using Gas Chromatography (GC). The study showed that seven of hybrid rice varieties produced higher methane emission than inbred rice variety. The highest methane emission was produced by Arize Gold (660 kg CH4 ha−1 season−1) followed by Mapan 05, Hipa 8, Hipa 19, Hipa 18, Sembada 168 and Sembada 989. While the inbred rice variety (Ciherang) produced 370 kg CH4 ha−1 season−1. One of hybrid rice variety (Sembada 168) has the opportunity to be improved as low methane emission hybrid rice variety indicated from the low index of CH4 emission to yield.
Removal methylene blue from aqueous solution using silica aerogel prepared from bagasse ash
Authors: Nazriati  , Maknun L , Fajaroh F 
Published: July 2019

Abstract
One important component in the manufacturing industry is coloring substance. Methylene blue (MB) is one of the coloring substances commonly use industry. The frequent use of the substance may result in the accumulation of methylene blue in the environment and thus creates an environmental waste that is dangerous for living. To control the condition of the environment, efforts to minimize the accumulation of methylene blue with the least possible negative effect in the manufacturing industries need to be made. Synthesized silica aerogel, the bagasse-ash-based solid, originated from sugar factory can be a simple and cheap solution to the problem. This study is intended to discuss the use of silica aerogel as an adsorbent of methylene blue. The influence of experimental factors such as contact time, initial MB concentration, and the temperature was investigated. The adsorption equilibrium was represented with Langmuir and Freundlich isotherm models. Langmuir equations were found to have the correlation coefficient value in good (R
2 = 0.9998). Adsorption of MB onto silica aerogel followed pseudo second order kinetics. The thermodynamic parameters such as the change in free energy (ΔG°), enthalpy (ΔH°) and entropy (ΔS°) were determined and the negative values of ΔG° indicated that the process of removal was spontaneous at all values of temperatures. The adsorption process was spontaneous and exothermic nature.
Multivariate analysis on Indonesian forest fire using combined empirical orthogonal function and covariance matrices
Authors: Nurdiati S , Sopaheluwakan A , Agustina A , Septiawan P 
Published: July 2019

Abstract
Forest and land fires are annual events that occur very frequently during the dry season in several regions in Indonesia. One of the main triggers is low rainfall and extreme anomalies in those regions. The objective of the research was to find the correlation between rainfall and Forest fire based on Tropical Rainfall Measuring Mission (TRMM) rainfall data and Global Fire Emission Database (GFED) forest fire data. Both of these data are big data, this research utilized singular value decomposition to generate information on the correlation of fire patterns and rainfall spatially and temporally. Empirical Orthogonal Function (EOF) based on Singular value decomposition (SVD) was used to reduce large data, without removing main information from the data. SVD approach in this research was conducted using the covariance matrix and combined EOF. EOF mode contribution is able to explain the joint variability of the data set to the phenomenon of fire and its relation to rainfall in Indonesia. Spatial patterns in this analysis show that Kalimantan, Sumatra, and Papua emerged as endemic areas for fires in 1998, 2002, 2006, 2009 and 2015. The year of 2004 and 2014 was also recorded as years of severe forest and land fires but was relatively not as severe as mentioned earlier. The temporal pattern shows that the characteristics of Forest fire in Indonesia are dominant in the final months of the year, from June to October.
Analysis of drought characteristics in southern Indonesia based on return period measurement
Authors: Parkhurst H , Nurdiati S , Sopaheluwakan A 
Published: July 2019

Abstract
The agricultural sector, especially the production of food crops is a pillar of the economy in Indonesia with production centers located in Java, Bali and Nusa Tenggara. One of the causes of the decline in food crop production is the drought caused by climate change. Drought can be calculated by the Standardized Precipitation Index which is an index to measure the severity of a region’s drought. The severity of a region’s drought can reach the highest value which can be used to estimate the period of drought occurring repeatedly. Furthermore, the estimation results can be used to obtain the Return Period value which is the average time of drought that has occurred by determining the maximum severity of the drought. To anticipate drought that occurs repeatedly, the purpose of this research is to identify the characteristics of drought from the Return Period based on the geographical profile of Java, Bali and Nusa Tenggara. The data used is monthly rainfall observation data for the period from 1985 to 2014 which describes the current drought events and data on monthly rainfall scenarios for the period from 2016 to 2100 based on the Representative Concentration Pathways that describe the future climate. The result of data analysis indicates that the Return Period geographically provides an overview of various regions. In the more wet region, there is a reduction in rainfall, while the drier region does not experience a significant reduction in rainfall. The general result shows, that in the long run Java will experience a reduction in rainfall more that of in Bali and Nusa Tenggara.
Development of a seed-planter wheeled robot prototype
Authors: T Harmanda T , Hazim M , Wulandari  , R Akbar A , Wahjuni S , Priandana K 
Published: July 2019

Abstract
Planting seeds may be trivial and can be done manually. However, on a large scale, it will inevitably become time-consuming and labor intensive. The use of robot can be an alternative solution to improve the efficiency of this agricultural-related work so that farmers can focus more on the decision making perspective rather than the labor-intensive works. This study aims to develop a prototype of a task-oriented seed-planter robot that can be used to assist farmers. The robot has three wheels: two motorized wheels and one free-wheel for its stability. It is equipped and programmed with line follower sensors and algorithm to simplify its navigation procedure, by assuming that the field is already marked before plantation process. The main contribution of this study is the design of the actuators of the robot prototype which enables the robot prototype to dig a hole, plant the seed and then close the hole again.
Halal gelatin extraction from Patin fish bone (Pangasius hypophthalmus) by-product with ultrasound-assisted extraction
Authors: Asih I D , Kemala T , Nurilmala M 
Published: July 2019

AbstractThe most gelatin is derived from porcine skins and bones that accounted for 46% of total gelatin. This is an obstacle to the development of food products in a Muslim country like Indonesia. One of the prospective source to be developed is fish bones that account for 10-20% of fish weight, with the highest cultivation is Pangasius (Patin fish). This study aims to extract the gelatin from fish bone by-product with ultrasound-assisted extraction using a combination of 3, 5, and 7 hours of extraction time. Based on the results, 5 hours extraction time became the best treatment that gives the highest yield, that 5 ± 1.03% with a value of gel strength, viscosity, and pH respectively 147.74 ± 0.83 g Bloom, 14.63 ± 0.31 cP, and 6.76 ± 03. Analysis of functional group with Fourier transform infrared (FTIR) has given a typical uptake of gelatin with the appearance of the amide peak. The result of molecular weight analysis with sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) obtained gelatin molecular weight with range 120.08-155.82 KDa.
Information and communication technology application improved higher education accreditation management
Authors: Rachmaniah M , Merry N K , Hamidah I , Zulkarnain I 
Published: July 2019

Abstract
Higher education study program undergoes periodic feasibility assessment on nine accreditation standards compliance held by the National Higher Education Accreditation Board (BAN-PT). The process consists of three stages: evaluation of data and information, determination of accreditation status, and monitoring of accreditation status. However, presently data and information collection use manual methods that slow down the process and sometimes create inconsistencies. This study aims to take advantage of the information and communication technology (ICT) by developing a web-based undergraduate study program accreditation information system called Simaprosa. The developed system used two iterations of the prototyping method and utilized the Laravel 5.5 framework. Further, the developed system was tested using the black box method. The results of this study were that Simaprosa facilitated higher education study programs in managing and collecting data to satisfy nine accreditation standards: 1. Vision, Mission, Goals, and Strategies; 2. Governance and Cooperation; 3. Students Affair; 4. Human Resources; 5. Finance, Facilities; Infrastructure, and Information Systems; 6. Learning Systems; 7. Research; 8. Community Services; and 9. Results and Latest Achievements. Users’ feedback results showed that all functions were satisfying according to users’ needs. Remind that users of Simaprosa followed the department and faculty organizational structures. On department level, the users comprised of Department Head, Department Secretary, Education Commission, Administration Head, and Treasurer. On the faculty level, the users comprise of Administration Head and Treasurer. In addition, the department and faculty level were granted personal Admin and Super Admin.
Numerical Calculation of the Process Removal of Localized Convective Structures in a Layer of a Porous Medium
Authors: Zagvozkin T N , Lyubimova T P 
Published: July 2019

Abstract
Thermal convection in a flat horizontal layer of a porous medium with solid impermeable boundaries on which the heat flow is given is considered. The porous medium is saturated with a viscous incompressible fluid pumped along the layer. In the system under discussion, with a vertical heat flow inhomogeneous along the layer, localized convective structures may occur in the region where the heat flow exceeds the critical value corresponding to homogeneous heating from below and corresponding to the beginning of convection in the layer. With an increase in the rate of longitudinal pumping of the liquid through the layer, a transition from a state in which the localized convective structures are stable to a state in which the localized convective flow is completely washed out of the region of its excitation occurs. Calculations were performed in the framework of Darcy-Boussinesq. Results of the numerical calculation of the process removal of localized convective structures from the zone of its excitation with an increase in the rate of longitudinal pumping of liquid through the layer are presented. The map of the system state modes is obtained.
Mechanical Behavior of Polycrystalline Rhenium under 3-Points Bending at a Low Homological Temperature
Authors: Panfilov Peter , Gornostyrev Yuri N , Zaytsev Dmitry , Panfilov Gleb P , Pilyugin Vitalii P 
Published: July 2019

Abstract
Mechanical behaviour of polycrystalline rhenium under 3-points bending at such low homological temperature as room is discussed. Two metallurgical technologies (electron beam melting and powder metallurgy) were used for the samples preparation. Fine-grained samples (PM metal) exhibit some plasticity prior the failure, while coarse-grained ones (EBM metal) behave like a brittle solid. The intergranular fracture is the fracture mode of rhenium in both cases. Basal slip and prismatic slip of dislocations are not active in rhenium at low homological temperature, but the grain boundary sliding occurs under these conditions. Therefore, polycrystalline rhenium cannot be machined at room temperature despite the growth of grain boundary cracks are braked in the samples due to grain boundary sliding.
Droplet Sizing in the Spray of a Fuel Injector Using Wavelet Analysis
Authors: Stepanov R , Batalov V , Sukhanovskii A 
Published: July 2019

Abstract
The paper discusses the applied methods for studying the structure of the two-phase flow. Measurements of the size of liquid droplets in a spray of fuel injector were carried out using two methods: Interferometric Particle Imaging (IPI) and Glare Point Technique (GPT). The combined use of these methods allows to significantly expand the range of measured droplet sizes, and also provides an opportunity for cross-validation of methods and determining the level of errors. In this paper, we tested the IPI method using wavelet processing of interference drop images. As a result, it was shown that IPI images can have a highly inhomogeneous structure. This leads to a considerable variation in the period of the IPI-image and, as a consequence, to an increase of the error in determining the drop size. The proposed error estimation algorithm allows one to introduce an additional selection criterion and obtain statistically comparable results obtained by the IPI and GPT methods.
Impact of Source Position and Obstructions on Fume Hood Releases
Authors: Mattox Tracy M , Falzone Carleton , Sadrizadeh Sasan , Kuykendall Tevye , Urban Jeffrey J 
Published: July 2019

Abstract
A fume hood is the most central piece of safety equipment available to researchers in a laboratory environment. While it is understood that the face velocity and sash height can drastically influence airflow patterns, few specific recommendations can be given to the researcher to guide them to maximize the safety of their particular hood. This stems from the issue that fundamentally little is known regarding how obstructions within the hood can push potentially harmful particles or chemicals out of the fume hood and into the breathing zone. In this work, we demonstrate how the position of a typical nanoparticle synthesis setup, including a Schlenk line and stir plate on an adjustable stand, influences airflow in a constant velocity fume hood. Using a combination of smoke evolution experiments and the aid of computational fluid dynamics simulations, we show how the location and height of the reaction components impact airflow. This work offers a highly visual display intended especially for new or inexperienced fume hood users. Based upon our studies and simulations, we provide detailed guidance to researchers and lab technicians on how to optimally modify reaction placement in order to protect the breathing zone while working.
Tailor-made multiple sequence alignments using the PRALINE 2 alignment toolkit
Authors: Dijkstra Maurits J J , van der Ploeg Atze J , Feenstra K Anton , Fokkink Wan J , Abeln Sanne , Heringa Jaap 
Published: July 2019

Abstract

Summary
PRALINE 2 is a toolkit for custom multiple sequence alignment workflows. It can be used to incorporate sequence annotations, such as secondary structure or (DNA) motifs, into the alignment scoring, as well as to customize many other aspects of a progressive multiple alignment workflow.

Availability and implementation
PRALINE 2 is implemented in Python and available as open source software on GitHub: https://github.com/ibivu/PRALINE/.
Long-lasting blood pressure lowering effects of nitrite are NO-independent and mediated by hydrogen peroxide, persulfides, and oxidation of protein kinase G1α redox signalling
Authors: Feelisch Martin , Akaike Takaaki , Griffiths Kayleigh , Ida Tomoaki , Prysyazhna Oleksandra , Goodwin Joanna J , Gollop Nicholas D , Fernandez Bernadette O , Minnion Magdalena , Cortese-Krott Miriam M , Borgognone Alessandra , Hayes Rosie M , Eaton Philip , Frenneaux Michael P , Madhani Melanie 
Published: July 2019

Abstract

Aims
Under hypoxic conditions, nitrite (NO2−) can be reduced to nitric oxide (NO) eliciting vasorelaxation. However, nitrite also exerts vasorelaxant effects of potential therapeutic relevance under normal physiological conditions via undetermined mechanisms. We, therefore, sought to investigate the mechanism(s) by which nitrite regulates the vascular system in normoxia and, specifically, whether the biological effects are a result of NO generation (as in hypoxia) or mediated via alternative mechanisms involving classical downstream targets of NO [e.g. effects on protein kinase G1α (PKG1α)].

Methods and results
Ex vivo myography revealed that, unlike in thoracic aorta (conduit vessels), the vasorelaxant effects of nitrite in mesenteric resistance vessels from wild-type (WT) mice were NO-independent. Oxidants such as H2O2 promote disulfide formation of PKG1α, resulting in NO- cyclic guanosine monophosphate (cGMP) independent kinase activation. To explore whether the microvascular effects of nitrite were associated with PKG1α oxidation, we used a Cys42Ser PKG1α knock-in (C42S PKG1α KI; ‘redox-dead’) mouse that cannot transduce oxidant signals. Resistance vessels from these C42S PKG1α KI mice were markedly less responsive to nitrite-induced vasodilation. Intraperitoneal (i.p.) bolus application of nitrite in conscious WT mice induced a rapid yet transient increase in plasma nitrite and cGMP concentrations followed by prolonged hypotensive effects, as assessed using in vivo telemetry. In the C42S PKG1α KI mice, the blood pressure lowering effects of nitrite were lower compared to WT. Increased H2O2 concentrations were detected in WT resistance vessel tissue challenged with nitrite. Consistent with this, increased cysteine and glutathione persulfide levels were detected in these vessels by mass spectrometry, matching the temporal profile of nitrite’s effects on H2O2 and blood pressure.

Conclusion
Under physiological conditions, nitrite induces a delayed and long-lasting blood pressure lowering effect, which is NO-independent and occurs via a new redox mechanism involving H2O2, persulfides, and PKG1α oxidation/activation. Targeting this novel pathway may provide new prospects for anti-hypertensive therapy.