bluuebunny/crossref_metadata_2025_split huggingface dataset:
Biological Oxygen Demand (BOD) Simulation in Sunter River Using Non Orthogonal Water Quality Model Transport
Authors: Martdianto Rommy , Muin Muslim , Lukman Tawekal Ricky , Bahari Muslim Arung , Nur Alam Heru 
Published: August 2022

Abstract
Water pollution problem in Jakarta has been going on for a long time. The existence of some rivers that are not directly connected to upstream in the tidal area can speed up the occurrence of water pollution and slow the circulation of polluted waste that affects water quality in river-estuary. Since 2010 after Kanal Banjir Timur (KBT) operated, Sunter River streamflow was divided by KBT, changes flow rate and water quality pattern. The study area is the main channel of the Sunter River which has 17 km lengths includes Duren Sawit, Pulo Gadung, Kelapa Gading, Plumpang, Rawa Badak and Tanjung Priok Area where the average water load is 624 mg/L. The simulation is divided into 2 scenarios with a flowrate configuration of 5 m3/s and 100 m3/s (with a raining condition of 1 hour). MuQuald3D, a three-dimensional water quality model, has been employed in this research. The merit of this model is that it can accurately predict water pollution load within the surface layer and the bottom layer and can be shown in contour profile which is effective and efficient guidance to solve the water quality problems along Sunter river-estuary. The model results show the effect of salinity will gradually reduce BOD concentration, and the existence of permanent construction around estuary (breakwater, port) changes pollutant distribution to the West and East area and increases the time of decomposition in waters, especially in low flowrate conditions.
System Dynamic Simulation to Determine The Effect Of Water Consumption on Land Subsidence During Covid-19 Pandemic in Jakarta
Authors: Irawan Diki Surya , Nursetyowati Prismita , Nova Maria Cintya , Maulina Sarah 
Published: August 2022

Abstract
Excessive groundwater extraction is believed to be one of the main factors for land subsidence which may be caused by tidal flooding due to the position of the surface which is lower than sea level. Covid-19 pandemic that has occurred in Indonesia since March 2020 has caused changes in water consumption patterns which derives from piped water and groundwater. There are many offices and industries that implement work from home (WFH) makes many buildings have a declining occupancy rate. With the decrease in the occupancy rate of the WFH policy, there will be a possibility that groundwater consumption from high-rise buildings that draw groundwater from deep aquifers can be reduced. This research is in the form of modelling and simulation that is used to build a level of understanding on a whole system as well as the interrelationships and interactions between its constituent variables. The purpose of this research was to determine the effect of groundwater consumption during Covid-19 pandemic on land subsidence in Jakarta using the dynamic system simulation method. The results showed that the work from home policy reduces groundwater consumption by 64.7%. In addition, the reduction in groundwater consumption during the Covid-19 pandemic caused land subsidence in Jakarta slows down and the rate of land subsidence in Jakarta decreased from 3.7 cm/year to 1 cm/year.
Analysis of behavioral factors in the spread of COVID-19 in Coblong District, Bandung, West Java, Indonesia.
Authors: Oginawati Katharina , Nathanael Rinaldy Jose , Pasaribu Udjianna Sekteria , Mukhaiyar Utriweni , Humam Afif , Ilmi Nisa Fadlilah Fathul 
Published: August 2022

Abstract
This study aims to assess community habits regarding the spread of COVID-19 in Coblong District. The research method used is by conducting a survey to the respondents. Respondents who were included in the study were 50 people from 38 houses. Respondents consisted of 30 COVID-19 survivors and 20 respondents as a control group who had never been infected with COVID-19. The preventive behavior studied consisted of 6 aspects, namely wearing masks, washing hands with soap, maintaining distance, avoiding crowds, reducing mobility, and room disinfection. The results obtained are that all preventive behavior factors have a negative correlation with COVID-19 cases except for the level of mobility which has a positive or unidirectional relationship between a person’s level of mobility and COVID-19 cases with a value of 0.306. Spearman correlation coefficient r were investigated for each elements of preventive behavior on cases and four behaviors found to be significantly correlated with cases (p<0.062). Logistic regression was used to further investigate and predict the infection risk with significant factors as predictors. The logistic regression model showed that 33.2% of cases in Coblong are caused by its relationship with preventive behaviors.
Study of Lerak (Sapindus Rarak) Biochar Application for Andosol Agricultural Soil Remediation
Authors: Arum Sekar , Wikaningrum Temmy 
Published: August 2022

Abstract
Andosol is a type of soil that has a high nutrient content and is suitable for agricultural land. However, the use of pesticides in farming to increase and protect production from physical defects can cause a decrease in andosol soil quality. This study aims to determine whether the application of lerak biochar can improve the quality of andosol soil on the parameters of pH, organic carbon and total nitrogen based on the Soil Quality Standard of the Indonesian Agricultural Environmental Research Institute in 2009. The experiment was carried out by applying 0.805 g of biochar to 2 kg of andosol soil that already add by urea, KCl, insecticides and fungicides in standard dosages. The results showed that the quality of the andosol soil increased from the acidic category to slightly acidic in the pH category (6.01). The medium category became high for organic carbon (4.85%) and the medium category became high for total nitrogen (0.58%). This statement is evidenced by the results of the t-test which shows that there is no difference between the average value of each parameter and the respective standards. This means that the value meets the existing standard category.
The properties of rolled compacted concrete as a preservation material
Authors: Utomo A B , Primaswari G 
Published: August 2022

Abstract
In Indonesia the frequency of road damage’s repairing (like pothole, unsmooth, uneven, and crack) is increasing every year and takes precedence when the damage is still early in small size. In rainy conditions, practically the activity of patching the hole can not be done while usually many holes occur during the rainy season. The study was conducted to evaluate the optimal composition of Rolled Compacted Concrete (RCC) materials as a road-repaired material on a laboratory scale. RCC is a type of concrete that is compacted with mechanic equipment (like vibrator roller and plate tamper). This compacting method is like the application of cold mix asphalt on road preservations. It was found that using RCC with cement content minimum of 18%, adding 2,0% of viscocrete to the weight of cement, and w/c ratio 0,3 will produce compressive strength 10 MPa in a day. The average value of RCC density is 2270 kg/m3 so its classified as normal concrete. From economical analysis, RCC production cost more efficien 5% compared to ordinary concrete at the sama quality and age. The application of RCC can increase the efficiency of worker and equipment component in range 35-85%.
Role of Non-Orthogonal Hydrodynamic and Sedimentation Model for Port Facilities Analysis on Port of Kuala Tanjung
Authors: Muin M , Sihombing R , Hermawan M W , Muslim A B , Alam H N 
Published: August 2022

Abstract
The port-channel and the availability of piers are strongly influenced by physical environmental conditions such as sea current, sea tide, sediment transport, and wave. The best size of vessel and pier length depends on the location’s demand and sea environment. The uncertainty of these environmental factors results in the low efficiency of port infrastructure, the load factor for back cargo, and the reliability level of port users. This paper presents the role of MuHydro3D and MuSed3D software, a three-dimensional hydrodynamic, and sedimentation models to determine the best vessel size. Using a non-orthogonal curvilinear coordinate technique, also known as the boundary-fitted technique, MuHydro3D and MuSed3D can accurately and quickly simulate the environmental conditions at the port. Knowledge of environmental conditions is expected to be an accurate basis in determining the depth and dredging duration, pier length, ship size, or the need of breakwater. The Port of Kuala Tanjung is one of Indonesia’s designated international hubs and was chosen as the case study in this paper. The result shows that the sedimentation rate of dredging for a vessel with up to 3,000 TEUs capacity is not too sensitive. Moreover, a vessel design with an approximate capacity of 3,000 TEUs is the optimum size from the pier length aspect.
Development of seismic map for offshore platform design in Indonesia, case study of the North Coast of Java
Authors: Hendriyawan  , Aditramulyadi D D , Tawekal R L , Rildova  
Published: August 2022

Abstract
Indonesia’s design of earthquake-resistant offshore platforms does not yet have specific regulations. The commonly used standard in Indonesia, API RP 2A WSD, does not explicitly state the earthquake return period for offshore structures. A more detailed procedure is described in ISO 19901-2:2004. Two methods are introduced in the standard. First, the simplified method allows the use of earthquake maps with a return period of 1000 years. Second, the detailed method requires a site-specific seismic hazard study to determine the return period of earthquakes. This paper presents the development of seismic hazard maps using a simplified method following ISO 19901-2:2004. The maps are prepared using the probabilistic method with a case study on the North Coast of Java. The results show that the study area falls into seismic zones 1 and 2. The seismic hazard maps can be used for earthquake resistance design for structures with exposure level L2 and L3 based on the seismic risk category following the ISO.
Removal of phthalocyanine reactive dye using plasma corona discharge
Authors: Handoko B , Notodarmojo S , Iqbal R 
Published: August 2022

Abstract
Phthalocyanine reactive dye is typically difficult to biodegrade in water because of its big molecular size coming from the complex metal structure of the dye. Corona plasma discharge which can produce active radical species and molecules with high oxidation potentials, shockwaves, and ultraviolet light is the potential to efficiently degrade the compounds. The experiments were carried out in a batch reactor with a capacity of 400 ml. The plasma generator used in this study had a point-plane electrode configuration with a voltage of 40 kV. The concentration of dye used as a target for degradation was 25 ppm. The reactor was operated with the addition of pure oxygen gas flowing into the reactor. The distance between electrodes and the time of exposure were varied and their removal efficiency (color and COD value) were tested. The results showed that the highest removal efficiency of the dye (83.15% and 52.32% for color removal and COD value respectively) was achieved from the experiment with an electrode distance of 4.0 cm and exposure time of 60 minutes.
Study of Hybrid Annuity Model on Indonesia Toll Road
Authors: Ramadhanti D T , Karsaman R H , Wibowo S S 
Published: August 2022

Abstract
Indonesia strives for toll road connectivity to push the high logistics costs and lead to economic growth. However, the expansion of toll road construction on a large-scale has cost much money. So, an innovative funding scheme must be developed to attract the private to invest in those projects. Hybrid Annuity Model is a new public-private partnership developed by the Government of India in 2016 to reduce concessionaires’ risk on toll road project funding. This study aimed to examine the compatibility of the Hybrid Annuity Model implementation on Indonesia toll road. The analysis was carried out through financial feasibility and sensitivity analysis on Serang – Panimbang toll road as the object study. Moreover, a survey was conducted to know the stakeholders’ perception of this funding scheme implemented in Indonesia. The results showed that Hybrid Annuity Model could give financial feasibility on Serang – Panimbang toll road under any changes of traffic volumes, toll fares, discount rates, investment costs, investment return period, and the investment proportion between the Government and the concessionaires. From stakeholders’ perspective, Hybrid Annuity Model could be implemented on Indonesia toll roads, especially those which were not financially feasible and located in rural areas. Furthermore, it needed some improvements and supporting regulations to be more suitable applied on Indonesia toll road.
Estimating household water consumptions in the Bandung Metropolitan area
Authors: Zevi Yuniati , Fatimah Wika Maulany , Ramdani Yusep , Habibbullah Muhammad Yusuf , Mursyida Nurdianti 
Published: August 2022

Abstract
The aim of this study is to determine relevant factors contributing to the water consumption in the Bandung Metropolitan area or Greater Bandung, which covered Bandung City, Cimahi City, Bandung Regency and West Bandung Regency. Towards achieving this aim, questionnaires were developed and served on the households in various communities to collect relevant data on the physical and socio-economic factors. Online questionnaires and direct survey were conducted with the number of samples proportional to the population of the Bandung Metropolitan area which is 1219 samples. Results of the study revealed that the daily average household water consumption in Bandung and Cimahi cities is 163.6 liters per person per day (lpd), Bandung Regency is 168.6 lpd, and West Bandung is 151.7 lpd, and in general was 161.26 lpd for Bandung Metropolitan. These values are higher than the standard commonly used for planning water supply systems which is 120 lpd. The factor affecting water consumptions are the type of water sources (public and private) and based on the Spearman Rho correlation test socio-economic conditions (economic level, education level, gender, and age) have a significant effect on water consumption as well. Comprehensively understanding household water consumption is necessary to design efficient and effective water demand management.
Optimizing rainwater harvesting systems for the dual purposes of water supply and runoff capture with study case in Bandung Area, West Java.
Authors: Cahyono Muhammad 
Published: August 2022

Abstract
Rainwater harvesting (RWH) systems use runoff to meet water supply demand and may also benefit runoff reduction. We develop the Rainwater Analysis and Simulation Program (RASP) model to simulate an RWH system using storage volume, roof area, irrigated area, and water demand as inputs. A cost-benefit model of RWH was developed with subject to reliability target of water supply and runoff capture in each simulation. Near-optimal solutions were identified for each case using a constrained nonlinear programming algorithm. We apply the model to evaluate the RWH system in Bandung Area, West Java. Various types of buildings, ranging from residential houses, schools, dormitories, offices, apartments, condominiums, mosques, and hospitals, are studied to provide several optimal parameters for tank volume and number of users for various land-use scenarios. The resulting parameters are obtained through optimization to get minimal RWH’s capital costs and water purchase costs by applying several criteria related to the financial feasibility of the RWH system and by keeping the runoff coefficient not exceeding the pre-development value. The simulation results can be used as a guide for planners to consider the application of RWH in several types of buildings.
Integration Of Mass Public Transport Fare In The Jakarta Area
Authors: Triana S , Sjafruddin A , Karsaman R H , Kaderi S 
Published: August 2022

Abstract
This study specifically discusses the concept of integrating mass public transport fares in Jakarta. Based on the identification of problems and also based on several studies of mass transportation in various cities in the world, the integration of fares can increase the number of mass public transportation ridership. This causes a change in the movement pattern of mass public transport users. An interim analysis has been carried out on a simple public transport network with the number of movements in the origin and destination matrix between stations/stops was 19,611 passengers/hour and variations in the amount of fare between IDR 2,500,-/passenger up to IDR 7,500,-/passenger (Existing average fare is IDR 4,188,-/passenger). In the optimization process, an existing operator’s revenue is an objective function. The optimization process for determining mass public transport fares is carried out recursively because it is influenced by changes in the integrated fare amount to the number of mass public transport users. The results of the optimization process show that the integrated fare of IDR 3,850/passenger (9% lowest than the average existing fare) that increasing public transport users by 3% compared to the number of passengers in the existing condition for 1 operating hour.
Research progress on improving the performance of MoS2 photodetector
Authors: Cheng Yongfa , Wan Rui , Li Li , Liu Zunyu , Yan Shuwen , Li Luying , Wang Jianbo , Gao Yihua 
Published: August 2022

Abstract
Two-dimensional layered materials have attracted increasing attention due to their unique structures and outstanding mechanical and physical properties. Transition metal dichalcogenides (TMDs) possess unique physical properties and optical properties that meet the basic requirements of photodetectors. As representative TMDs, MoS2 has excellent mechanical properties due to its strong covalent bonds and great elasticity. The monolayer MoS2 has a direct bandgap of around 1.8 eV. In addition, MoS2-based optoelectronic devices have high switching ratio and carrier mobility. However, due to the characteristic of atomic-scale thickness, the light-harvesting ability of layered TMDs is very weak, which largely limits the responsivity and detection rate of photodetectors, thus inhibiting the practical application of such devices. The slow photo response rate is also a problem that often occurs in TMDs devices. Researchers have reported several strategies to improve the performance of TMDs-based photodetectors. At present, there are two main optimization schemes, namely surface modification, and heterostructure construction. The utilization of metal plasmon effect and the construction of heterojunctions are both effective means to improve the performance of MoS2 photodetectors. These schemes can improve the light absorption capability of MoS2 and broaden the range of light detection. However, there are also disadvantages of the complex processes and limited enhancement effects in large-area fabrication. Therefore, it is of vital significance to further explore the response range and performance of MoS2 photodetectors.
Spectroscopic investigation on the interaction of direct yellow-27 with protein (BSA)
Authors: Bisht Babita , Dey Pinki , Singh Avinash Kumar , Pant Sanjay , Mehata Mohan Singh 
Published: August 2022

Abstract
Direct yellow 27 (DY-27) interaction with bovine serum albumin (BSA) was investigated using multi-spectroscopic techniques to understand the toxicity mechanism. Fluorescence quenching of BSA by DY-27 was observed as a result of the formation of a BSA-DY27 complex with a binding constant of 1.19 × 105 M−1 and followed a static quenching mechanism with a quenching constant Ksv of 7.25 × 104 M−1. The far UV circular dichroism spectra revealed the conformational changes in the secondary structure of BSA in the presence of DY-27. The calculated average lifetime of BSA is 6.04 ns and is nearly constant (5.99 ns) in the presence of dye and supports the proposed quenching mechanism. The change in free energy (ΔG) was calculated to be −28.96 kJ mol−1 and confirmed the spontaneity of the binding process. Further, docking studies have been conducted to gain more insights into the interactions between DY-27 and serum albumin.
Gazeau-Klauder coherent states in position-deformed Heisenberg algebra
Authors: Lawson Latévi M , Osei Prince K 
Published: August 2022

Abstract
In this paper, we present coherent states à la Gazeau-Klauder for a free particle in square well potential within position-deformed Heisenberg algebra . These states satisfy the Klauder’s mathematical requirement to build coherent states. Some statistical properties such as the probability distribution, the intensity correlation function and the Mandel parameter are calculated and analyzed. We find that these states are sub-Poissonian in nature. We also construct for these coherent states, the even cat states and we evaluate its Wigner function which analyses the quasiprobability distribution of these states. We graphically demonstrate that these states exhibit nonclassical behavior.
Incorporating uncertainty from downscaled rainfall projections into climate resilience planning in U.S. cities
Authors: Lopez-Cantu Tania , Webber Marissa K , Samaras Constantine 
Published: August 2022

Abstract
The planning, design, and maintenance of stormwater infrastructure must be informed by changing rainfall patterns due to climate change. However, there is little consensus on how future climate information should be used, or how uncertainties introduced by use of different methods and datasets should be characterized or managed. These uncertainties exacerbate existing challenges to using climate information on local or municipal scales. Here we analyze major cities in the U.S., 48 of which developed climate adaptation and resilience plans. Given the prevalence of depth duration frequency (DDF) curves for planning infrastructure for rainfall, we then assessed the underlying climate information used in these 48 plans to show how DDF curves used for resilience planning and the resulting outcomes can be affected by stakeholders’ methodological choices and datasets. For rainfall extremes, many resilience plans varied by trend detection method, data preprocessing steps, and size of study area, and all used only one of the available downscaled climate projection datasets. We evaluate the implications of uncertainties across five available climate datasets and show the level of climate resilience to extreme rainfall depends on the dataset selected for each city. We produce risk matrices for a broader set of 77 U.S. cities to highlight how local resilience strategies and decisions are sensitive to the climate projection dataset used in local adaptation plans. To help overcome barriers to using climate information, we provide an open dataset of future daily rainfall values for 2-, 5-, 10-, 25-, 50-, and 100 years annual recurrence intervals for 77 cities and compare resilience outcomes across available climate datasets that each city can use for comparison and for robust resilience planning. Because of uncertainty in climate projections, our results highlight the importance of no-regret and flexible resilience strategies that can be adjusted with new climate information.