bluuebunny/crossref_metadata_2025_split huggingface dataset:
The association between postpartum depression and air pollution during pregnancy and postpartum period: a national population study in Taiwan
Authors: Shih Ping , Wu Chih-Da , Chiang Tung-liang , Chen Pau-Chung , Su Ta-Chen , Cheng Tsun-Jen , Chen Yi-Hua , Guo Yue Leon 
Published: July 2021

Abstract
Epidemiological evidence shows the association between air pollutants and several mental health outcomes, including depression, sleep disturbance, dementia, childhood neurodevelopment and suicide. Pregnant women are believed to be more susceptible and vulnerable to environmental pollutants, and postpartum depression (PPD) is a prevalent debilitating mental disorder. However, data on the effects of exposure to air pollution during pregnancy and postpartum period on the risk of PPD remain limited. This study aimed to evaluate the association between exposure to ambient air pollution during pregnancy and postpartum period and the incidence of PPD. The Taiwan Birth Cohort Study recruited representative 12% of all newborn in 2005 and their mothers by two-stage stratified sampling, including 21 248 mother–infant pairs. The occurrence of PPD was assessed by a self-reported questionnaire. Exposure to air pollutants during pregnancy and postpartum period was estimated using hybrid kriging/land-use regression (LUR) and integrated LUR-machine learning model based on data from the air monitoring stations. Logistic regression was then conducted to determine adjusted odds ratios (aORs) of PPD in relation to air pollutants. A total of 21 188 women were included in the final analysis, among whom 3,648 (17.2%) developed PPD within 6 months postpartum. The occurrence of PPD was significantly related to exposure to ambient concentrations of nitrogen dioxide (NO2) during first trimester after adjustment [aOR: 1.081 per interquartile range (10.67 ppb), 95% confidence interval: 1.003, 1.165], but not to particulate matter ⩽2.5 µm in diameter or carbon monoxide. Exposure to ambient NO2 during early pregnancy was significantly related to the occurrence of PPD among the women investigated in this population-based study.
Environmental injustice in Clean Water Act enforcement: racial and income disparities in inspection time
Authors: Konisky David M , Reenock Christopher , Conley Shannon 
Published: July 2021

Abstract
Decades of research has documented that people of color and low-income experience disproportionate environmental burdens, with recent empirical studies showing these burdens are exacerbated by disparities in government regulatory enforcement. Scholars’ attention to enforcement disparities as a source of environmental injustice highlights that government behavior may contribute to ongoing inequities in environmental outcomes. To date, studies analyzing enforcement disparities have employed statistical models to either estimate the probability that a federal or state agency performs an enforcement action or the total number of such actions over some duration of time. In this study, we adopt an alternative approach that analyzes the duration of time it takes for government officials to inspect a facility to determine if there is a difference based on the demographics of the host community. Specifically, we study administrative data from state implementation of the U.S. Clean Water Act (CWA), which we couple with demographic information around large, regulated facilities to analyze the relationship between response time and community characteristics. Estimating event history models, we find that state regulators’ inspection response time is slower toward noncompliant facilities located in communities that have higher percentages of poor and Hispanic citizens. With respect to Black communities, state regulators’ response time to noncompliant facilities is no different than compliant facilities. Collectively, these results indicate that state regulators are not prioritizing CWA facilities that violate performance requirements when they are in environmental justice communities.
Assisted History-Matching Based on Multiobjective Surrogate Reservoir Model for Tight Oil Reservoirs
Authors: Dong Zhenzhen , Tian Weidong , Yang Yongzhi , Jiao Tingkui , Lv Wenfeng , Zhou Yongyi , Yang Jinghui , Li Weirong 
Published: July 2021

Abstract
History matching and quantifying uncertainty in hydrocarbon production forecasts are considered important steps in reservoir simulations and are key processes for providing crucial information for decision making in the development of oil and gas fields. However, history matching of unconventional reservoirs with complicated fracture system is very computationally expensive and time consuming, and most of the data used are subject to high uncertainty. In addition, the objectives of history matching are usually conflicting, such as improving match of oil rate will deteriorate match of water rate. Previous studies on assisted history matching have mainly focused on optimizing a single-objective function, where the production and pressure data are combined as a single misfit value. In this study, the proposed algorithm extends the application of the proxy model to deal with multiobjective optimization in the context of reservoir history matching. Then, the resulted proxy model were conducted to analyze history-matching quality and obtain uncertainty prediction. Result suggests that the multiobjective surrogate reservoir model scheme not only could obtain reliable history matches and provide accurate uncertainty estimation, but the complexity of gridded fractures is mitigated through the workflow. The benefit of using the multiobjective surrogate reservoir model is to obtain a various set of history matched models while reducing the number of expensive reservoir simulation runs. The proposed methodology might also be useful for reservoirs in which simulation models could not reflect the production history and for those with high uncertainties in reservoir characterization.
Social impacts of oil spills towards the people living in coastal areas
Authors: Alvernia P , Soesilo T E B , Herdiansyah H 
Published: July 2021

AbstractSoil and water contamination due to oil spills have caused a decline in soil and water quality and has undermined the welfare and health of people. The oil spills have affected the environment and ecosystem-based services, increasing the level of poverty and physical, mental, and occupational mobility of the people. One of the effects experienced by the people is the loss of livelihood, thus requiring them to change occupations, and some even become unemployed. The lack of support for livelihood and unemployment is identified as a long-term effect on the community. This research aims to analyze the social impacts caused by the oil spills on the research site. Moreover, the method used in this research is quantitative and qualitative. This research aims to prove that there is a change of livelihood resulting from the oil spills. What fishermen do as their occupation when not sailing is, among others, becoming freelancers, merchants, and even becoming unemployed. Those were done to generate additional income as the fishermen could not sail. However, the income received from such occupations is insufficient or lower than fishing in the sea.
Studies of fishermen’s economic loss due to oil spills
Authors: Alvernia P , Utomo S , Soesilo T E B , Herdiansyah H 
Published: July 2021

Abstract
Offshore oil-drilling activities have a significant potential to generate pollutants which of them is from oil spills. Oil spills in the coastal ecosystem harm the marine ecosystem and human activities. The disrupted environment of the waters by the oil spills causes social-economic losses, specifically impacting the decline of fishery products and the community’s living standard on the coast. The immediate economic effect of the oil spills is, among others, the death of marine organisms due to the oil layers on the water surface, causing economic losses to the fishermen. The decline in the marine environment quality is directly proportional to the decrease in fishermen’s incomes. The purpose of this research is to evaluate the fishermen’s economic losses caused by the oil spills. The research method used is the mixed method which is a combination of quantitative and qualitative methods. The outcome of this research is not only the damage of oil spills to the environment, but it also causes an economic impact on the people around the affected area. The connection between the environmental damage and the community’s income is due to the offshore community’s reliance on natural resources as their source of income. The average of the difference fishermen’s losses after oil spills has reached 76% or Rp. 177,875/trip, which is due to the decrease in the fish caught so that the fishermen could not sell them.
A study on desiccation cracking behavior of landfill liner developed from construction waste
Authors: Budihardjo M A , Hadiwidodo M , Wardhana I W , Tuasykal M R N A , Samadikun B P , Ramadan B S 
Published: July 2021

Abstract
This study was conducted on composite materials consist of construction waste, bentonite, and lime for landfill liner. In this case, Matlab version 2019a was used to analyze composite variables for desiccation crack. In the mixture of construction waste, bentonite, and lime, there is a desiccating behavior. This study found that the addition ≤ of 20% bentonite could cause more significant cracks. The addition of 1% lime can reduce the level of soil shrinkage so that cracks are less than with the addition of bentonite. The results have four variations of composites that meet the soil shrinkage limit ≤ of 4 % not to cause significant cracks.
The efficiency of biological oxygen demand removal in domestic wastewater treatment using multi soil layering
Authors: Khotimah C K , Handayani D S , Sudarno  , Syafrudin  , Hadiwidodo M , Wardhana I W 
Published: July 2021

Abstract
Domestic wastewater from the kitchen, bathing, and washing activities contains organic pollutants. The parameter tested was Biological Oxygen Demand (BOD). In this study, Multi Soil Layering (MSL) methods have been used as a processing method. This treatment serves to reduce ammonia levels in wastewater. This study aims to determine the removal of BOD in gray water using the Multi Soil Layering System. Wastewater samples were taken in a residential area of Semarang. In this study, there are 2 stages, namely the preparation and implementation stages. In the seeding and acclimatization process, batch reactors are used for 14-24 days. The next stage is the process of running for 20 days with intermittent flow. Soil Mixture Box (SMB) is a mixture of andosol soil and activated charcoal (reactor A), andosol soil and apus bamboo (reactor B), and andosol soil, activated charcoal and apus bamboo (reactor C). The results of domestic wastewater treatment using the MSL method respectively in the three reactors can remove BOD by 26%, 25%, and 29%.
The best practice of ecoliteracy based on social culture
Authors: Juhriati I , Rachman I , Yayoi K 
Published: July 2021

Abstract
This study aims to obtain an in-depth description of the best practice of eco-literacy based on social culture. The data collection techniques were carried out through observation, interview, field note, and documentation. The subjects of this study were the principal, teachers, and students of kindergarten. The collected data were analyzed using qualitative data analysis with case study techniques. The results show that ecoliteracy learning is integrated with culture and religion. It was adapted to the motto of Firdaus Percikan Iman (FPI) Kindergarten, namely the Qur’an generation, intelligent, loving the environment and culture. Ecoliteracy is learning through an artificial environment by teaching culture to children. The artificial environment has a building concept by presenting buildings that use natural materials. Each of these buildings is full of cultural values and maintains natural ecosystems. To introduce culture to the students, various activities such as introducing traditional foods, playing Mang Depot, dancing traditional dances, playing traditional games, and singing regional songs were delivered.
Utilization of tailing waste as aggregate for road pavement
Authors: Susanto I , Fransisco S , Firdaus Y , Ronny Y 
Published: July 2021

Abstract
Tailing waste from gold mining in Papua, Indonesia, is a severe problem for the environment. Tailing as Hazardous and Toxic Substances, the deposits so massive. On the other hand, the availability of natural aggregates for road pavement continues to run low. The problems can be solved by utilizing tailing as a road base layer with massively, fulfill specification, and save. The purpose of this research is how to utilize tailing as a road base layer. The research methods used are experiment laboratory method by physical, chemical, TCLP, and mechanical strength test. The physical analysis shows that the size of the tailing is loose and non-cohesive, so it requires binding material to increase bearing capacity. The TCLP test showed that the level of toxic material in tailing was fulfilled the threshold. The stabilization analysis of tailing with 20% clay soil produces CBR 17,3% and can only be utilized as embankment. Stabilization with 13,35% cement fulfills the target UCS 24 kg/cm2 to be used as a road base layer. Marshall test result by 60% tailing and 7% asphalt meet specifications to be asphalt road base layer.
Baseline waste management data in North Lombok District
Authors: Simorangkir A , Citrasari N , Hariyanto S , Widyastuti A 
Published: July 2021

Abstract
An integrated waste management system requires baseline data, including waste generation analysis, composition density, and waste characteristics. Baseline data is needed to determine the proper waste management strategy. This research was conducted by measuring directly from the source of waste carried out by stratified sampling following SNI 19-3964-1994. The location of the study was carried out in Tanjung and Gangga districts because this location is considered to represent North Lombok Regency. The research was conducted using 100 samples of household waste. The study results on the composition of waste in the North Lombok Regency consisted of organic waste, plastic waste, paper, cloth, wood, glass, metal, and rubber waste. The dominant composition is organic waste. The characteristics of waste in the North Lombok Regency have a higher water content than the water content of waste in general. All the characteristics tested indicate that the waste in North Lombok Regency requires several treatments before processing waste, such as reducing the water content and increasing the C/N ratio. Based on the characteristics and composition of the waste, composting or incineration is the suitable waste management method in North Lombok Regency.
The potential of coffee waste composting technology using microbial activators to reduce solid waste in the coffee industry
Authors: Amalia N , Widialip N F , Safira N , Citrasari N , Hariyanto S 
Published: July 2021

Abstract
The coffee industry in Sidoarjo produces coffee waste as coffee ground, coffee husk, and coffee return with the solid waste generation of about 5044.3 Tons/year. The coffee waste characters resemble organic waste, so it has potential as a composted raw material. This study aims to determine the selected variation raw material composition from the coffee industry based on Indonesian National Standard (SNI) Number 10-7030-2004 and the recycle potency of the coffee industry solid waste using composting technology. The research variables are the modified composting method (open windrow composting and Bacary Italian) and the co-composting method. The result of this research for all treatments showed that the concentration range of pH value 6.92-9.54, moisture 34.78-66.60%, C-organic 17.75-33.82%, N 1.45-2.93%, C/N ratio 10-13, P2O5 0.13-0.31%, and K2O 0.89-2.89%. The selected variation raw material composition of bio compost based on the compliance to SNI 10-7030-2004, which is 1.5 kg coffee ground + 1.35 coffee return + 0.15 kg coffee husk + 3 mL EM4 (K10). Based on K10 as the selected variation raw material composition of bio compost, the coffee industry solid waste recyclable is coffee ground 0.64%, coffee husk 0.20% and returned coffee 100%.
‘School visit’ improving sustainable environmental knowledge of youth living near forest borders
Authors: Septiarini R , Herdiansyah H , Siregar P G. , Gawi J 
Published: July 2021

Abstract
Environmental education needs to be applied to adolescent children to one day coexist and avoid conflict with wildlife in the forest. Still, the initiative makes environmentally-themed education strategies attractive to teens. To better understand the adolescent environment's educational landscape, this study focused on students in their teens. There was 2016-2017 conducting a School Visit' in 10 schools attended by 596 students in Aceh. The majority of the material emphasizes the effectiveness of game-based, rich with a fun approach that combines movement and interaction. The purpose of this study was to understand the extent of the effectiveness of the 'School Visit' program to increase knowledge related to forests and wildlife and provide input or other views on the program. This study used a review method with secondary data. The report results were positive. The knowledge of teenage students about forests and orangutans increased by 10 percent. The goal of the 'school visit' program gave the students a fresher feel so that they would be more interested in learning about forests and wildlife.
Assessment of cadmium concentration, bioavailability, and toxicity in sediments from Saguling reservoir, West Java Province
Authors: Wardhani E , Roosmini D , Notodarmojo S 
Published: July 2021

Abstract
This study aims to assess the concentration, bioavailability, and toxicity of cadmium in sediments. Surface sediment samples were taken from 12 sampling locations during the rainy and dry seasons from 2015-2017. Cadmium concentrations were analyzed using ICP-OES. Potential ecological risk index (PERI) methods assess the quality of lake sediments concerning heavy metal contamination. Risk Assessment Code (RAC) is a method used to assess the bioavailability of metals in aquatic sediments. The concentration of cadmium in the sediments during the rainy and dry seasons is high compared to the standards. The average concentration in rainy season 14.82 ± 1.48 mg.kg-1 and dry season 11.12 ± 2.16 mg.kg-1. Based on the assessment of sediment quality is categorized as extremely polluted during the rainy and dry seasons. The sediment quality has been contaminated with cadmium with the serious ecological risk category in two seasons. This means that Cadmium pollution has had a serious impact on the reservoir ecosystem. The bioavailability of cadmium in the dry season is higher than in the rainy season. This suggests that in the dry season, cadmium is more bioavailable and more able to enter the food chain. The toxicity of cadmium is higher in the dry season.
The mitigation strategy for reducing greenhouse gas emissions from household activities in Medan city
Authors: Suryati I , Herlina N , Hasibuan N H , Siregar R L , Husna A , Silalahi A , Audina M , Sari S 
Published: July 2021

Abstract
The activities of several sectors cause an increase in the amount of greenhouse gas emissions. Household activities also produce greenhouse gas emissions, mainly from cooking, electricity use, solid waste, and wastewater. The dominant greenhouse gas emissions from household activities are CO2, CH4, and N2O. This study aims to inventory greenhouse gas emissions from household activities in Medan City and determine several mitigation scenarios in reducing greenhouse gas emissions from household activities. The method used in calculating greenhouse gas emissions is the IPCC method. The results of an inventory of GHG emissions from household activities in Medan City for energy consumption (LPG and electricity) are 1.16 million tons CO2e/year, household solid waste is 36801.5 tons CO2e/year, and household wastewater is 198723.12 tons CO2e/year. The scenario of replacing LPG with an induction stove can reduce GHG emissions by an average of 21.08%, the design of using solar panels on the roof can reduce GHG emissions by an average of 30.19%, the composting scenario can reduce GHG emissions by an average of 0.38% and utilization CH4 from household wastewater as electrical energy can reduce GHG emissions by 1.23%.
Orf 1 as a gene marker for fast screening in medical waste treatment applications during a covid-19 pandemic
Authors: Rozana K 
Published: July 2021

Abstract
Although the Covid-19 pandemic has been going on for more than a year since it was first discovered in Wuhan, China, in mid-December 2020 until now, the pandemic is still ongoing, and there are no signs of a decrease in cases. The latest developments show that Covid-19 has undergone significant mutations in several areas in America, Europe, and Africa. The mutation of Covid-19 may be caused by environmental conditions that are not the concern of various parties. This research was conducted to find a gene marker from Covid-19 that could be used as a media for rapid screening when sorting medical mask waste so that later waste processing techniques could be carried out separately between masks that could potentially contain Covid-19 and waste that did not contain Covid-19. This research method was carried out using bioinformatics analysis, especially the genomic characterization of Covid-19 samples from 17 different countries. Based on the study results, it is known that from 17 samples of Covid-19, the ORF 1 gene was the most stable and conserved gene in all samples.
Coal tar waste utilization by cracking into fuel source and its separation using the fractional vacuum distillation method
Authors: Ratnaningsih W , Sukandar  , Wahyuningrum D 
Published: July 2021

Abstract
Coal tar is a hazardous and toxic waste, a by-product of coal gasification processes. Coal tar is a waste produced in industrial fields such as steel, power plant, and the cement industry. As a potential fuel source for its component, utilization of coal tar by catalytic cracking into fuel source and its separation using fractional vacuum distillation is conducted. Pyrolysis of low-temperature coal tar (LTCT) was carried out using catalyst activated natural zeolite by 2:10 ratio at various temperature. The middle oil (180-260°C) fraction was distilled through fractional vacuum distillation using Vigroux column fraction and analyzed using gas chromatography-mass spectroscopy (GC-MS). In this study, the rate constant (k) of middle oil recovery was increased with the increase of temperature and reduced pressure. The calorific value, the density, the kinematic viscosity, the flashpoint, the pour point, and the sulfur content of the middle oil complied with diesel oil type 2 specifications. Still, it did not meet the specification for density specifications. The main components of the middle oil fraction were naphthalenes and their derivatives. The results indicated that the raw LTCT could be considerably upgraded through catalytic cracking, obtaining fuel oil fraction.