bluuebunny/crossref_metadata_2025_split huggingface dataset:
Study on the Influence of Offshore Elevated Flare on the Layout of LNG Terminal
Authors: Hu Xingqiao , Zhang Luchao , Gao Yuan 
Published: October 2023

Abstract
In order to save land, the elevated flare of the LNG terminal is usually considered to be arranged on the sea. The thermal radiation and leakage evaporation diffusion of elevated flare are the key issues to be considered in the plane layout of the wharf. In this paper, the physical process of the flare thermal radiation and the evaporation and diffusion of the terminal sump are analyzed by using engineering knowledge. Combined with the theory of thermal radiation and vapor diffusion and the actual project scenario, the corresponding mathematical model is given and applied to the engineering practice for a large number of calculations. The following conclusions are drawn: (1) The thermal radiation received by the LNG terminal is weakly related to the flare height, that is, the effect of increasing the flare height to control the thermal radiation at the header is not obvious; There is a linear positive correlation with the flare treatment capacity; It is strongly inversely proportional to the distance from the wharf to the flare. It is preferred to reduce the thermal radiation intensity at the wharf by adjusting the distance between the wharf and the flare. When the distance between the wharf and the flare is greater than 100m, the thermal radiation value of the wharf is always less than the specified limit. (2) Within the scope of conventional design, the safe distance between the wharf working platform and the flare is about 20∼90m; The optimal safe distance between the wharf fire control room, bridge approach pipe gallery and the flare should be greater than 61m and 41m respectively. (3) The combustible vapor concentration at the flare is linearly and positively correlated with the flare height, so the flare height should be reduced as much as possible during design. (4) The combustible vapor concentration at the flare is negatively correlated with the distance from the flare to the terminal sump. It is found that the distance should not be less than 180m through calculation. When the distance is more than 300m, the combustible vapor concentration at the flare has little relationship with the flare height and the ambient wind speed. When the distance is more than 340m, the combustible vapor concentration at the flare is always less than the specified limit.
3D numerical investigation on flow boiling characteristics in large length-to-diameter ratio microchannel
Authors: Huang Zhen , Chen Li , Peng Xiaohai , Wang Songchao , Zhao Dan , Zhao Changying , Liu Gang 
Published: October 2023

Abstract
To meet the demand of thermal management with large power and high heat flux in the future engineering applications, more and more attentions have been draw to develop the two-phase microchannel cooling technology. In this work, a three dimensional numerical investigation is performed to study the influence of mass flux and heat flux on the two phase flow boiling characteristics in a single microchannel with large length-to-diameter ratio. The related calculation results show that the Volume of Fluid (VOF) model coupled with Lee model can predict the two phase pressure drop and heat transfer coefficient of the microchannel well. And the flow patterns in the microchannel are classified as bubbly flow, slug flow and annular flow, which can be captured by this numerical model precisely. Besides, the transient pressure drop augments with the increase of mass flux. But the effect of mass flux on the amplitude of quasi-steady pressure drop and the peak value of time-averaged heat transfer coefficient along the microchannel is small. At last, the amplitude of quasi-steady pressure drop increases with the augmentation of heat flux. The maximum and fully developed time-averaged heat transfer coefficients along the microchannel increase with the heat flux.
Numerical Simulation of Jet Penetration for Typical Targets
Authors: Wang Yun , Dong Liang , Shen Zhiben , Cao Weiwu , Wu Jianwei 
Published: October 2023

Abstract
In view of a typical target, the numerical simulation of the jet penetration produced by a working part is carried out. Based on the fluid-solid coupling method, the process of the jet forming and penetration into a target by a front stage working section in series are calculated and simulated by using the MSC.DYTRAN numerical simulation software. On the basis of the calculation and simulation results, the penetration effects of the front stage working section in series on the targets with different thicknesses in the air-medium and water-medium environments are comparatively analyzed.
Research on the characteristics of projectile penetration into water based on fluid-structure Interaction
Authors: Xu Pengzhao , Ma Guangsong , Zhao Ning , Shi Kunlin 
Published: October 2023

Abstract
To study the water entry characteristics such as fuze overload, projectile overload and water-gas interface change during the penetration of projectile from air to water at different angles. Using the HyperMesh/LS-Dyna joint simulation tool and the fluid-structure-Interaction algorithm, the relevant characteristics of the projectile penetrating water at different angles (30 °, 60 °, 90 °) are simulated numerically. The numerical simulation results show that the axial overload peak of the projectile is almost unchanged when the projectile penetrates the water at different angles, and the axial overload peak of the fuze decreases with the increase of the angle. Both the radial overload peak of the projectile and the fuze decrease with increasing water entry angle. The results show that the shock wave generated when the projectile penetrates into the water has a greater effect on the radial overload of the projectile and fuze than on the axial overload.
Investigation of Droplet Dynamics Under Shear Flow
Authors: Li Zilong , Tao Yuequn , Liu Qiusheng 
Published: October 2023

Abstract
The dynamics of droplet under shear flow was investigated in normal gravity and microgravity. Drop under shear flow has many applications in aerospace such as aircraft de-icing and environmental control and life support system in space station. Shape analysis of the droplet showed that drop in microgravity have a greater contact angle and height, but a smaller contact radius, than that in normal gravity. The difference between advancing and receding contact angle θa-θr
is greater in microgravity than that in normal gravity under the same wind speed. The effect of airflow on the droplet is mainly dependent on the We number and the dimensionless number k′, which characterizes the ratio of wind force and adhesion force. the k’ in microgravity is larger than that in normal gravity. The droplet exposed to airflow from static to motion state can be divided into three regimes.
Validation metric of multi-output model based on energy distance
Authors: Zhao Jiao , Xiao Wei , Chen Jiangtao , Shen Yingying , Lv Luogeng 
Published: October 2023

Abstract
Model validation metrics have been developed to provide a quantitative measure that characterizes the agreement between predictions and observations. The validation metric of multi-output model has the problem of solving the joint probability density fuction (PDF). The traditional method is to reduce the dimension, but this may lead to the loss of some information. To avoid solving the joint PDF, this paper gives a validation metric method of multi-output model based on energy distance. At the same time, it avoids the problem of information loss caused by dimensionality reduction, and greatly reduces the difficulty of calculation. Then using mathematical examples, a set of numerical studies are designed to verify the correctness and stability of the method. Finally, we apply the metric to the Sandia validation challenge problem.
Influence of oblique magnetic fields on the periodicity of large-scale intermittent states in channel flow
Authors: Li Sen , Li Shunzhi , Shi Xiaomeng , Wang Lebing , Dong Shuai 
Published: October 2023

Abstract
Further investigation of the large-scale intermittent states in channel flow reveals that the addition of a streamwise magnetic field and the original spanwise magnetic field has an effect on the cycle of the large-scale intermittent states. We also studied the effect of oblique magnetic field directions on the large-scale intermittent state. It is found that the introduction of a streamwise magnetic field increases the cycle time of the circulation.
Study on the performance of the dust removal efficiency test device
Authors: Zou Junchen , Wu Feiyang , Huang Wenhao , Sun Xiaoqun , Wang Yanzhao , Yang Ling , Ma Zhenxing 
Published: October 2023

Abstract
In China, the particulate matter (PM) pollution has caused serious environmental and health concerns, and it is still a huge challenge to control PM pollution. In order to alleviate the hazardous of PM pollution, the dust collector is widely used to separate PM from gas streams. However, after a period of operating, whether the removal efficiency of the dust collector still meet the requirement of the emission limit is unknown. The dust removal efficiency test device was designed and its performance was investigated in this study. The flow field simulation result showed that the test device had a good uniformity, which was consistent with previous measured result. Moreover, it found that the linear relationship between the light scattering concentration and the filtration membrane weighed concentration was y=2.285x, and when the inlet wind speed was about 0.5 m/s, the dust removal efficiency of the dust collector was more than 99.73%, the outlet dust concentration was (0.03-0.04) mg/m3, which was below the emission limit of 15 mg/m3. When the inlet dust concentration was about 200 mg/m3 and the inlet wind speed was (0.25-0.75) m/s, the dust removal efficiency was more than 99.98%. To sum up, the designed test device can be used to estimate the dust removal efficiency of various types of dust collectors.
Hydrodynamic analysis of journal bearing considering the effects of cavitation and minuscule particle
Authors: Zhou Yong , Shi Xiaofang , Chen Yu , Wang Ling , Chen Chen 
Published: October 2023

Abstract
Journal bearing is the general element in the mechanical systems, which can provide the rotational motion of joints. The hydrodynamic analysis model of journal bearing is established and the effects of cavitation and minuscule particle are considered in the simulation model. The cavitation effects would be represented by the mixture model. Based on the CFD and DPM technology, the mixture lubrication medium of journal bearing is developed, which includes the minuscule element of solid in the lubrication film. And, the effects of structural parameters and operation conditions on the hydrodynamic characteristics of journal bearing is investigated. The simulation results could provide the suggestion for the design of structure and working condition.
Optimizing the Potential of Agricultural Land to Maintain the Production Sustainability (Empirical Study at West Papua)
Authors: Fafurida  , Hapsari M , Marpaung G N 
Published: October 2023

Abstract
West Papua is one of the provinces in Indonesia that has great land potential to be utilized as agricultural land, but this land has not been optimally utilized to support agricultural activities and yields in West Papua. This research aims at determine the land optimization model and determining the optimal agricultural land area in West Papua Province. This research uses a quantitative approach with secondary data and the data collection is conducted by documentation method. The analysis used in this research is Linear Programming. The results of research indicate that the optimal land area to be used as agricultural land in West Papua Province for food crops and horticulture is 1.60% and the land area for plantation crops is 2.31% of the existing land area without reducing the area forest area in West Papua Province.
Green-pesantren and environmental knowledge and awareness: case study at Pondok Pesantren As Salafy Al Asror Semarang
Authors: Nurkhin A. , Martono S. , Ngabiyanto N. , Mukhibad H. , Rohman A. , Kholid A. M. 
Published: October 2023

Abstract
Green-pesantren or eco-pesantren have become an important concern in improving environmental knowledge and awareness for all parties, including Pondok Pesantren (Islamic boarding schools) in Indonesia. This research aimed to describe the level of student’s environmental knowledge and awareness and explore the efforts that had been made at Pondok Pesantren As Salafy Al Asror in Semarang to improve environmental knowledge and awareness for Santri (Students), Ustadz (Teachers), and residents of Pondok Pesantren. The research was conducted quantitatively and qualitatively to capture the phenomenon in more depth. The informants included Santri, Ustadz, and caretakers of Pondok Pesantren As Salafy Al Asror in Semarang. Data collection methods used interviews and documentation. The data analysis method used is descriptive quantitative and interpretive qualitative analysis. The research findings indicated that Pondok Pesantren As Salafy Al Asror had paid sufficient attention to the concept of green-pesantren or eco-pesantren. The management had tried to raise environmental knowledge and awareness for Santri, Ustadz and Pondok Pesantren stakeholders. Efforts that had been made include the provision of adequate trash bins, regular cottage community service agendas, sanitation arrangements, and environmental awareness education. However, there were still many things that needed to be addressed, such as waste management and infrastructure management that cared more about the environment. Provision of alternative sources of electricity through solar electricity and utilization of clean and healthy water sources was an important matter that must be addressed by Pondok Pesantren management.
Environmental disclosures in mining companies: are there any stakeholder demands?
Authors: Amelia R. W. , Suhardjanto D. , Probohudono A. N. , Honggowati S. 
Published: October 2023

AbstractThis research investigates the influence of stakeholder demands on environmental disclosure in mining companies in ASEAN. The influence of these stakeholders is analyzed using the stakeholder theory framework. The research sample is 100 companies in the mining industry listed in the OSIRIS database in 2017-2019. This research uses seven independent variables that represent the strengths of three stakeholder groups. Environmental disclosure data is obtained using content analysis from annual reports and company sustainability. Shareholders, creditors, and auditors were found to be significant predictors of environmental disclosure in mining companies. On the contrary, creditor’s demands are not seen as driving corporate environmental disclosure in most ASEAN countries but have a significant effect in Philippine. In general, this research is in line with stakeholder theory which encourages companies to pay attention to the demands of stakeholders to carry out the best corporate social responsibility, especially on environmental disclosure.
Environmental, Social, and Economic Sustainability: Do Big Companies in Indonesia Care?
Authors: Widhiastuti R. , Aeni I. N. , Susilowati N. , Rahmaningtyas W. , Farliana N. 
Published: October 2023

Abstract
Companies are the main actors that utilize Indonesia’s natural resources, the responsibility of maintaining surrounding conditions such as environmental, social, and economic is an absolute responsibility that cannot be avoided. This study aims to determine the motivation of management in providing accountability for its activities to stakeholders. Through the lens of stakeholder theory, it is expected to find out the management’s efforts in showing the public all its accountability activities. LQ45 companies are the largest companies that are fully trusted by various stakeholders to be the main attraction for research studies. The sustainability report prepared throughout 2019-2022 and research data analyzed using moderation regression analysis is expected to provide an overview of the company’s concern for the surrounding. The results show the environmental, social, and economic sustainability of large companies in Indonesia is captured in the report shows a weak level, their concern increases when the company experiences an increase in profits. Pressure from various company stakeholders does not necessarily increase their concerns. The company will be encouraged to disclose when the company experiences an increase in profitability. However, creditors provide the most dominant pressure to make companies open about their activities. Suggestions for future research can use other theoretical perspectives such as legitimacy and stewardship in seeing management’s concerns.
Exploring an Environmental Awareness of Economics Teachers
Authors: Mudrikah S. , Widia S. , Setiyani R. 
Published: October 2023

Abstract
Environmental education has long been taught in schools. Still, the impact and results of environmental education that have been carried out in schools have not been seen, both in society and the environment. Teachers have a key role in helping students develop awareness of the importance of preserving and protecting the environment. By providing a comprehensive understanding of environmental issues, teachers can help students understand the negative impact of human behaviour on the environment and why it is important for them to become agents of change who care about the environment. The purpose of this study was to determine the perceptions, beliefs, and practices of caring for the environment among teachers. The population of the study was high school economics teachers in Semarang City, the sampling technique used was saturated sampling, totalling 136 teachers—data collection techniques using questionnaires and data analysis using descriptive and independent sample t-tests. The results showed that the average perception, belief and practice of caring for the environment obtained a fairly high score. In addition, from the results of the independent sample t-test, no differences were found between male and female teachers in terms of perceptions, beliefs and practices of caring for the environment.
Comparative Study of The Life Cycle Assessment Model for Agricultural Solid Waste Management: Case Studies in East Ungaran and West Ungaran Districts, Semarang
Authors: Arief Budihardjo M , Setiyo Huboyo H , Priya Kurniatama D V 
Published: October 2023

Abstract
The increase in population affects the production of available food; this also increases agricultural activities and the waste produced. Improper agricultural waste management harms the environment, so a good agricultural waste management strategy is needed. The areas that are the object of study are East Ungaran and West Ungaran Districts, Semarang Regency. This area has great potential in the agricultural sector. This plan aims to analyze the existing conditions, volume, and mass balance of agricultural waste and their environmental impact using the life cycle assessment (LCA) and material flow analysis (MFA) methods to determine the appropriate strategy for managing agricultural solid waste. It is planned to manage agricultural solid waste using two alternative solutions, which are then compared using the LCA method using the SimaPro application and the Analytical Hierarchy Process (AHP) method involving two experts in the agricultural sector. Based on the analysis, processing agricultural solid waste as bokashi fertilizer and silage livestock feed is the most suitable method and is of interest to farmers.
Environmental Management Accounting Adoption in Gunungpati Community Self-Help Group (CSHG) – A Case Study
Authors: Susilowati N , Mahmud A , Widhiastuti R , Santoso A 
Published: October 2023

Abstract
Public organizations increase awareness of environmental issues by encouraging Environmental Management Accounting (EMA), which has been said to deliver numerous benefits to users. This paper proposes to investigate the adoption of EMA in public corporatized water supply organizations. This study was a case study in the Gunungpati Community Self-Help Group (CSHG). Data was from interviews with managers, internal data, and financial report documents. Data were analyzed using the Miles and Huberman technique including data reduction, data presentation, and conclusions. The findings show that Gunungpati CSHG provides water and sanitation services to 198 households, distributing to an estimated population of 103,000 individuals. Five broad categories were identified, four containing physical and monetary information. Product output, non-product output, waste flows, indirect costs, and externalities exist. They produce the volume of water purchased and extracted, water lost, environmental benefits from water recycling, potable water substituted with river saved, and damage to river health from operations. Meanwhile, the organization pay attention to the impact of the organization on the environment to maintain the ecosystem.
Analysis of Fertilizer Raw Materials and Environmental Degradation: Using Granger Causality
Authors: Oktavilia S. , Damayanti N. 
Published: October 2023

Abstract
This study aims to examine the relationship between fertilizer raw materials and environmental degradation using the Granger causality test. This study uses data from World Bank Commodity Prices for fertilizer raw materials in the form of price data for phosphate, potash, and natural gas in the U.S. Dollar/metric tons and environmental degradation in the form of CO2 Emissions from methane and process emissions data from British Petroleum (BP) from 1990-2021. The methods are stationarity test, cointegration test, and Granger causality test. The results of the analysis state that there is no bidirectional relationship between these variables, but there is a one-way relationship where environmental degradation affects the price of raw materials for potash and phosphate fertilizers, and the price of natural gas is affected by environmental degradation. The implication of this research is the need to apply incentives to producers and consumers of fertilizers in the use of fertilizers to improve environmental quality.
A Case Study: How Does Green Market Orientation Impact MSMEs Marketing Performance Through Organizational Ambidexterity?
Authors: Febriatmoko B. , Prananta W. , Wijaya A. P. 
Published: October 2023

Abstract
Environmental issues are a serious concern in several countries including Indonesia. Sustainable national development still pays attention to environmental conservation efforts. One of the business entities that has an important role in national development is the Small Micro and Medium Enterprises (MSMEs) sector. This study seeks to understand how green market orientation impacts MSMEs’ marketing performance through organizational ambidexterity. The sample in this study were 117 MSMEs in the city of Semarang. The method used is outer model and inner model analysis with intervening variables using Smart PLS. From the statistical tests conducted, it was found that green market orientation (GMO) affects marketing performance directly and indirectly through organizational ambidexterity. This shows that if GMO is getting better, it can increase the level of marketing performance both directly and through intervening organizational ambidexterity.