bluuebunny/crossref_metadata_2025_split huggingface dataset:
Production of antibacterial and antioxidant agents by Actinobacteria using soybean meal as a nitrogen source
Authors: Risdian C , Endah E S , Saraswaty V , Wulansari H A , Diwan A M , Ratnaningrum D , Hidayati N A , Mozef T 
Published: June 2023

Abstract
Actinobacteria are mainly found in soil and some of them have properties that are common to bacteria and fungi, despite having quite distinct characteristics. Unlike bacterial colonies in general, which are clearly slimy and grow rapidly, some groups of actinobacteria colonies grow slowly by showing a powdery consistency and are tightly attached to the agar surface. Observations on a colony under the microscope showed that many of them form asexual spores for their reproduction. Many metabolite compounds generated by actinobacteria have promising activities like antioxidant and antagonistic activity against bacteria and fungi. The production of these compounds depends not only on the strain of the organism but also on the medium in which it is grown and the growth conditions. Moreover, agricultural by-products such as soybean meal are known to have high protein content, thus it can be potentially used as an alternative media for actinobacteria. In this research, ten actinobacterial strains were isolated from the soil. After seven days of cultivation with the medium containing soybean meal, the cultures were subjected to ethyl acetate extraction. Five extracts exhibited antibacterial properties against Bacillus subtilis with a zone of inhibition ranging from 10–14 mm. One extract could strongly inhibit Staphylococcus aureus with an inhibition zone of 21 mm. However, none of them were active against Escherichia coli. Five extracts demonstrated antioxidant DPPH radical scavenging activity with more than 40%.
Application of the concept of smart city and smart water management for the new capital city
Authors: Hernaningsih T , Said N I , Yudo S , Wahyono H D , Widayat W , Rifai A 
Published: June 2023

Abstract
The Indonesian government has decided to move the State Capital (IKN) from DKI Jakarta to East Kalimantan Province. One of IKN’s visions is to build a smart, modern city that meets international standards. This paper examines the concept of smart city and smart water management (SWM) that will be applied to the new IKNs to build an integrated, sophisticated and sustainable clean water supply system. The method used was analyzing concepts related to smart cities and SWM applications in the world and Indonesia. Based on the results of the analysis of the abovementioned concepts, several conclusions were obtained, namely that an SWM support system is indispensable in water system management, leak detection, and water quality monitoring. Then, a smart water grid is used to develop control over water resources, infrastructure, and water discharge with high efficiency and sustainability. The flood early warning system must be utilized to minimize losses or victims caused by flood disasters. In addition, an online water quality monitoring system is needed to monitor water quality online and in real time. The integrated implementation of the smart city and SWM concepts described in the paper is expected to produce safe, healthy, and sustainable drinking water services.
Evaluation of human urine purification using rice husk charcoal as the adsorbent
Authors: Sintawardani N , Adhilaksma C A , Hamidah U , Pradanawati S A , Suharno S M 
Published: June 2023

Abstract
The abundant amount and availability of human urine potentially can be re-used for water and nutrient resources. Nutrient content in urine, primarily nitrogen and phosphorus, can cause eutrophication in waters and worsen the environment. Urine is not easy to be managed separately because it is usually integrated with black water or domestic wastewater that flows to the sewer from households or other public facilities. The decline in water quality and the increase in water consumption by the global community have given many driving forces to technological breakthroughs that can recover important nutrients from waste for reuse. In addition, the high-water content of urine also provides an incentive to reuse or recycle most of the water contained in urine for public purposes. Rice husk charcoal is a waste product from burning husks used as fuel in the tofu-making process. It is usually used for poultry bedding or soil enhancer in gardening. This research aimed to characterize the utilization of rice husk charcoal as an adsorbent to treat urine to obtain clean water. The urine was processed using 30-mesh rice husk charcoal as an adsorbent. The soaking time and hose type were varied to identify the effect on the adsorption performance. The urine absorption using rice husk charcoal with 60 minutes soaking time showed the highest removal based on the absorbance value of 27.18% at 487 nm wavelength and 28.25% at 668 nm wavelength. On the other hand, the adsorption using a curved hose showed better performance than the straight hose. The adsorption using the curved hose could decrease the urine concentration by 25.30-29.24% at 487 nm wavelength and 28.50-30.19% at 668 nm wavelength. In addition, the urine total dissolved solids (TDS) decreased by 73-76%. Therefore, rice husk charcoal could be used as the adsorbent in the adsorption of human urine.
The Effect of Communication on Supply Chain Management Performance on Construction Projects in Jakarta
Authors: Ramadhan Wahyu , Prasetyo R F , Raflis  
Published: June 2023

Abstract
The information flow has a positive influence on the performance of a supply chain where if there is a miss communication, it can risk causing construction delays and causing problems such as delayed delivery from suppliers, poor decision making between the two parties, and many more, where good communication and coordination are needed for all those involved in the supply chain so that the maximum results are obtained in the process. This study aims to determine the effect of communication on supply chain performance in the construction industry. The sample in this study amounted to 53 respondents who were directly involved in 4 projects classified B1 and B2 in Jakarta. Data collection was done by using a questionnaire. The data processing technique in this study is multiple regression analysis. Based on the results of research conducted using the SPSS application, where all independent variables have a significant effect either partially or simultaneously on supply chain performance. From the results of R square, the independent variable in this study has an influence of 51.7% on supply chain performance.
Development of Infiltration Map Using Geographical Information System Based on Ground Test in Cisadane Watershed Indonesia
Authors: Hidayat D P A , Darsono S L W , Farid M 
Published: June 2023

Abstract
Infiltration is one of the watershed parameters that are essential for integrated water resources management. Infiltration can be measured directly by a ground test such as using a double infiltrometer. But for the very large watersheds, the ground test methods take a lot of time, require a lot of skilled manpower, and cost. Geographical information systems (GIS) and remote sensing applications have been developed and used in various fields such as water resources, and produce good and fairly accurate results. The present study aims to develop an infiltration map based on a limited point of survey using GIS. This study uses the Cisadane watershed in Indonesia as the case study with an area of 154547 ha. Furthermore, it will be compared with the potential recharge zone map that has been generated from previous research. The resulting map of infiltration generated by GIS with a limited point of the survey is quite close to the potential recharge zone map using the weighted method with watershed physical and hydrological factors.
The Effect of Petung Bamboo Reinforcement Threads on Reinforced Concrete (RC) Beams
Authors: Rakhmawati Anis , Nisak Chudzaifatur Rohmatun , Arnandha Yudhi 
Published: June 2023

Abstract
The bamboo reinforced concrete (RC) beam is used as an alternative to steel reinforcement (a non-renewable material), due to the high tensile stress value, readily available, and relatively cheap. Therefore, this study aims to evaluate the effect of petung bamboo reinforcement threads on reinforced concrete beams. This provided several treatments for various analyses, namely (1) Petung reinforcement without apus bamboo skin thread (P). (2) Petung reinforcement thread using apus bamboo skin at distances of 5 and 10 mm (U5 and U10). Based on the compressive strength of concrete cylinders, a quality of 21.212 MPa was produced. The average flexural strength also provided the P, U5, and U10 variants of 12.606, 17.916, and 14.383 MPa, respectively. This indicated that the addition of apus bamboo skin threads in petung reinforcement increased the flexural strength of the reinforced concrete beams. These conditions were subsequently capable of increasing the cross-sectional area of the petung bamboo’s main reinforcement.
Comparison of GPR (Ground Penetrating Radar) Penetration Results Using the GCB-400 Antenna on Flexible and Rigid Pavement
Authors: Nugroho Untoro , Susanto Norick Cahya Jonathan 
Published: June 2023

Abstract
GPR (Ground Penetrating Radar) has been known as a tool used in non-destructive testing or in other words GPR can find out the conditions below the surface without damaging the layer above it. The GPR method is generally applied to roads namely flexible pavements and rigid pavements. This method has non-destructive properties because it utilizes electromagnetic waves in its operation, such as detecting the presence of objects or constituent layers at a certain depth. The penetration depth that can be achieved by GPR is influenced by three physical parameters, namely conductivity, relative dielectric permittivity (RDP), and magnetic permeability. In this study, GPR used the GCB-400 antenna model produced by the Swedish company Geoscanners. The research was conducted on roads with 2 different types of materials, namely asphalt (flexible pavement) and concrete (rigid pavement). Asphalt and concrete have different relative dielectric permittivity (RDP), where asphalt has an RDP of 5 and concrete has an RDP of 5.5. The results showed that there were significant differences between roads with asphalt and roads with concrete materials. On roads with asphalt material, GPR can reach a depth of more than 3 meters. On roads with concrete materials, GPR can only reach a depth of less than 2 meters.
Estimating of Post-liquefaction Settlement Based on SPT Data in Klaten Regency, Central Java
Authors: Hasiholan F , Ismanti S , Rifa’i A 
Published: June 2023

Abstract
A strong earthquake with Mw 6.3 occurred in Yogyakarta on May 27, 2006, causes of damage to DI Yogyakarta Province and Central Java Province, including Klaten Regency. The geological stratigraphy consists of volcanic breccias, lava and tuff in this area and generally shallow groundwater levels, which can trigger liquefaction. The potential liquefaction analysis in this study uses Standard Penetration Test (SPT) data carried out in 3 districts, namely Delanggu, Polanharjo, and Karanganom District uses Idriss-Boulanger method. The peak ground acceleration was calculated by Next Generation Attenuation (NGA) method using data obtained from the Pacific Earthquake Engineering Research (PEER) Center database. The peak ground acceleration that causes liquefaction in this study is at least 0.29 g in bedrock. All areas indicated potential liquefaction with varying depths. Polanharjo District is the most susceptible to potential liquefaction. The method proposed by Zhang estimates post-liquefaction settlement in this study from 3.3 – 42.4 cm (light to extensive damage) in Klaten Regency. Based on the results, further mitigation studies are needed in Klaten Regency to minimize settlement that will occur due to liquefaction. This study is required in planning the construction of toll road in Klaten Regency.
Evaluation of Krueng Tripa River Capacity in Ujung Krueng Village, Nagan Raya Regency, Indonesia
Authors: Safriani Meylis , Amir Astiah , Ikhwali M. Faisi 
Published: June 2023

AbstractFlood events are very common in the lowlands as often happens in Ujong Krueng Village, Tripa Makmur District. This study aims to determine the magnitude of the design flood discharge using the Nakayasu method and evaluating the cross-sectional capacity of the Krueng Tripa River in Ujong Krueng Village. The data used are both primary and secondary. Primary data consists of measurements of river slope, river flow velocity, river depth and river width, while secondary data consists of rainfall data, Krueng Tripa watershed maps and Krueng Tripa River situation maps. The results of the design flood discharge calculation using the Nakayasu method show that the 2-year return period (RP) is 3237.46 m3/s, the 5-year RP is 4389.53 m3/s, the 10-year RP is 5177.08 m3/s, the 10-year RP is 5177.08 m3/s, the 25-year RP is 6199.32 m3/s, the 50-year RP is 6979.04 m/s, and the 100-years RP is 7778.23 m3/s. From the results of hydraulic analysis on the section of the Krueng Tripa river in Ujong Krueng Village using the HEC-RAS 6.1.0software, it shows that in the 2-year return period, on pias 1, 7 and 8 experienced overflows on both sides while on pias 2, 3, 4, 5 and 6 only overflow on the right side. In the return periods of 5th, 10th, 25th, 50th- year and 100th, all the streams had overflowed, the highest overflow reached 4.84 m, while the lowest overflow reached 0.30 m.
The Potential Bioethanol Production from The Starch of Breadfruit Peel– A Review Case in Indonesia
Authors: Bahlawan Z A S , Megawati  , Triwibowo B , Damayanti A , Maulana A Y , Tassabila D E C , Ichwan R 
Published: June 2023

AbstractThe need for fossil energy is increasing over time and is not proportional to its availability which continues to decline. The consumption of fossil fuels in Indonesia is one of the highest in the world, reaching 75 billion liters in 2019. One of the alternative fuels that can substitute for fossil fuels is bioethanol. The potential utilization of agricultural waste in the form of breadfruit peel (Artocarpus altilis) into bioethanol is studied in Indonesia in this paper. Breadfruit peels contain a concentration of monosaccharides in the form of starch up to 39.5%. In addition, breadfruit production in Indonesia is also relatively high, up to 190,551 tons in 2020. Processing starch into bioethanol requires several stages of processing first. Pre-treatment with enzyme catalysts resulted in higher concentrations of reducing sugars than chemical catalysts. This was followed by fermentation with yeastSaccharomyces cerevisiaeto convert reducing sugars into bioethanol. In the final stage, the purification process is carried out by a multilevel distillation process and adsorption to obtain a 99.9% bioethanol purity. It is hoped that this review can help the strategy of processing breadfruit peel waste into bioethanol with an efficient process.
Smart Micro Grid Architecture for Realtime Monitoring of Solar Photovoltaic Based on Internet of Things
Authors: Iksan Nur , Purwanto  , Sutanto Heri 
Published: June 2023

Abstract
The use of PV solar energy as an alternative renewable energy source has increased worldwide. The smart grid monitoring system is applied on a micro scale for the fulfilment of household electricity needs or Smart Home Micro Grid (SHMG) using Artificial Intelligent (AI) and Internet of Things (IoT) approaches. Problems in solar PV systems include uncertainty and non-linearity which have an impact on the increasingly complex structure of the energy data generated and accelerate control and decision making. The forecasting process carried out using the AI approach is indispensable for the utilization of PV systems, especially for distributed residential PV that is operated and maintained independently. Furthermore, the use of IoT technology is also important to accelerate information processing and improve performance in the monitoring system. The purpose of this research is to develop a solar PV monitoring system framework at SHMG to optimize the performance of the electricity supply sourced from solar PV basen on IoT.
Effect of Solvent Type and Extraction Time on Binahong Leaf Extraction Process
Authors: Kusumaningrum M , Fardhyanti D S , Jai J , Yulianto D N , Suminar I S , Nurjaya  
Published: June 2023

Abstract
Extraction of binahong leaf essential oil was carried out using the soxhletation method. This research was conducted to study how the influence of solvent type and the length of extraction time and to determine the optimal soxhletation conditions of binahong leaf essential oil (Anredera Cordifolia (Ten.) Steenis). Soxhletation was carried out with variations in solvents of 96% ethanol, n-hexane, and chloroform and time variations of 4, 5, and 6 hours. The yield of essential oil obtained is affected by extraction time and the solvent type. The volatile oil components obtained from soxhletation are the terpenoid and fatty acid groups. The best yield obtained is 5.23% at 5 hours using 96% ethanol as solvent.
Degradation of Methylene Blue Dye in Wastewater Using Ozonation Method with H2O2 Catalyst
Authors: Wulansarie R , Jannah RF , Bismo S , Safitri R , Rengga WDP 
Published: June 2023

Abstract
Water pollution is still a serious problem in Indonesia. One of the pollutants that contribute to water pollution is dye. One type of dye that is often used in the textile industry is methylene blue. There are several methods for treating dye waste, one of which is the ozonation method. Ozonation is a chemical oxidation process to remove the color of organic dyes. The catalytic ozonation process can increase the ability of ozone in sewage treatment. The catalyst used is H2O2 which can decompose into OH radicals. OH radicals have a higher reduction potential than other oxidizing agents. Ozonation research with H2O2 catalyst aims to determine changes in the concentration of dyes, COD and BOD5. In testing the ozonation time (0.15,30,45,60) minutes, the pH conditions (5,7,9) and the total mass concentration of H2O2 (0.2,5,5,7,5,10) % showed that the longer the time ozonation, the higher the pH value. and the more H2O2 used, the less concentration of dye, COD and BOD5.
Photodegradation of methylene blue dye by hematite-biochar composite prepared from Dendrocalamus asper using microwave-assisted pyrolysis (MAP)
Authors: Astuti W , Meysanti D , Salsabila M T , Sulistyaningsih T , Rusiyanto  
Published: June 2023

AbstractPetung bamboo (Dendrocalamus asper) stem-based hematite-biochar composite (HBC) has been synthesized using microwave-assisted pyrolysis (MAP) to replace conventional pyrolysis. The bamboo sawdust contains 19.8-26.6% lignin and cellulose as much as 4.24-5.36% so that it can be used as precursors in biochar preparation. In general, bamboo-based biochar has a low adsorption capacity. In this study, biochar was modified by hematite (Fe2OH3) to increase its ability in dye removal through the photocatalytic-adsorption process. Biochar was prepared by the MAP process and impregnated with FeCl3and Fe2SO4compounds to produce HBC. The performance of HBC was then tested using methylene blue with variations in solution acidity level, adsorption duration, and starting concentration. The results show that HBC prepared using a MAP process has a higher adsorption ability (90.56%) than HBC prepared through a conventional pyrolysis process (84.85%). At an adsorption duration of 240 minutes and a solution acidity level (pH) of 9, methylene blue was best absorbed.
The impossible challenge of estimating non-existent moments of the Chemical Master Equation
Authors: Wagner Vincent , Radde Nicole 
Published: June 2023

Abstract

Motivation
The Chemical Master Equation (CME) is a set of linear differential equations that describes the evolution of the probability distribution on all possible configurations of a (bio-)chemical reaction system. Since the number of configurations and therefore the dimension of the CME rapidly increases with the number of molecules, its applicability is restricted to small systems. A widely applied remedy for this challenge is moment-based approaches which consider the evolution of the first few moments of the distribution as summary statistics for the complete distribution. Here, we investigate the performance of two moment-estimation methods for reaction systems whose equilibrium distributions encounter fat-tailedness and do not possess statistical moments.

Results
We show that estimation via stochastic simulation algorithm (SSA) trajectories lose consistency over time and estimated moment values span a wide range of values even for large sample sizes. In comparison, the method of moments returns smooth moment estimates but is not able to indicate the non-existence of the allegedly predicted moments. We furthermore analyze the negative effect of a CME solution’s fat-tailedness on SSA run times and explain inherent difficulties. While moment-estimation techniques are a commonly applied tool in the simulation of (bio-)chemical reaction networks, we conclude that they should be used with care, as neither the system definition nor the moment-estimation techniques themselves reliably indicate the potential fat-tailedness of the CME’s solution.
Characterizing alternative splicing effects on protein interaction networks with LINDA
Authors: Gjerga Enio , Naarmann-de Vries Isabel S , Dieterich Christoph 
Published: June 2023

Abstract

Motivation
Alternative RNA splicing plays a crucial role in defining protein function. However, despite its relevance, there is a lack of tools that characterize effects of splicing on protein interaction networks in a mechanistic manner (i.e. presence or absence of protein–protein interactions due to RNA splicing). To fill this gap, we present Linear Integer programming for Network reconstruction using transcriptomics and Differential splicing data Analysis (LINDA) as a method that integrates resources of protein–protein and domain–domain interactions, transcription factor targets, and differential splicing/transcript analysis to infer splicing-dependent effects on cellular pathways and regulatory networks.

Results
We have applied LINDA to a panel of 54 shRNA depletion experiments in HepG2 and K562 cells from the ENCORE initiative. Through computational benchmarking, we could show that the integration of splicing effects with LINDA can identify pathway mechanisms contributing to known bioprocesses better than other state of the art methods, which do not account for splicing. Additionally, we have experimentally validated some of the predicted splicing effects that the depletion of HNRNPK in K562 cells has on signalling.