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Morphological and Permeability Fraction of Mixed Matrix Polysulfone Membrane on Batik Palembang Wastewater Treatment

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Journal of Physics: Conference Series 2021年第1期1845卷

作者： E Yuliwati Elfidiah A Melani H Porawati Graduate Program Study Program of Chemical Engineering Universitas Muhammadiyah Palembang Indonesia Program Study of Chemical Engineering Faculty of Engineering Universitas Muhammadiyah Palembang Indonesia Program Study of Mechanical Politeknik Jambi Indonesia

High performance polysulfone (PSf) membrane has been prepared for treating of batik palembang wastewater. Many investigations attempted the use of polysulfone (PSf) membranes to filtrate dilute contaminant in textile wastewater. The matrix membrane is a mixture of PSf which is produced by adding inorganic materials to obtain a polymer that functions to manufacture the membrane by increasing hydrophilicity and impurity resistance. MMM were fabricated from a dope solution containing PSf/LiCl/DMF at different additives composition. Antifouling properties of membranes could be enhance with 0.0 - 10 wt.% LiCl that has been added into dope solution. Pure water permeation flux analysis (PWP), AFM and FESEM. From the results of research on FESEM, the PSf / LiCL membrane showed a fairly symmetrical cross-sectional structure containing two layers. The layers of the tiny finger-like structure on the edge of the perforated fibers and the holes like the larger fingers are mixed with the macrovoid layer in the middle section. PWP flux is not proportional to mean rough outer surface but higher water permeation. Therefore, PSf/LiCl exhibited a better performance that resulted a much lower fouling tendency than the naked membrane in batik Palembang wastewater treatment.

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Reach sustainability through Corporate Social Responsibility (CSR)

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IOP Conference Series: Earth and Environmental Science 2021年第1期716卷

作者： Yunita Ismail Environmental Engineering Study Program Faculty of Engineering President University 17550 Indonesia

The utilization of natural resources and the environment to improve the community's welfare is an unavoidable choice. The environment used should still protect the environment. This study aims to provide an overview of the company's efforts to implement its obligation to preserve the environment using a different type of Corporate Social Responsibility (CSR) program, which were community development and green marketing. The method used was a survey by taking the population at two different places, Jakarta and Pangkal Pinang. The sampling technique was done using a purposive method to obtain samples that meet the company's CSRreceiver's criteria. The number of the respondent from the first population is 44 respondents and from the second population is 100 respondents. Data analysis was done using simple and multiple linear regression. The results showed that CSR's implementation had a significant impact on education, health, and poverty reduction. CSR activity by the company was accepted by society activities directly in the form of counseling and mentoring. CSR activities conducted on marketing activities by implementing Green Marketing found that pricing and promoting an environmentally sound positive impact on consumers' willingness to buy back the product. In contrast, the product is not significantly influential.

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Response of load-displacement on cubical sample of Oil-Palm shell with fly ash concrete using digital image correlation system

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AIP Conference Proceedings 2021年第1期2376卷

作者： Akhmad Dhannu Deltanto Nuraziz Handika Bastian Okto Bangkit Sentosa Civil Engineering Study Program Faculty of Engineering Universitas Indonesia Depok Indonesia

Oil-Palm industry produces some side products as solid waste which consist of 23% empty oil palm bunches, 6.5% oil palm shell, and 13% fiber from the main products. Reusing oil palm waste is very important to increase economic value and reduce potential pollution. One of the ways to exploit Oil Palm Shell (OPS) byproduct is to substitute the uses of natural coarse aggregate in concrete structure as building material. study on the use fly ash as one of the admixtures to increase OPS concrete compressive strength has been conducted. Digital Image Correlation (DIC) as a method of displacement response measurement was applied. Fujifilm XA-3 was used as primary camera to capture the image with speed of 3 frames per second (fps). An open source 2D-DIC, Ncorr v1.2 and MatLab student version of R2020a were used. The obtained average compressive strength is 25 MPa, the average of stiffness of the specimens is 946.95 kN/mm and the average of Poisson Ratio is 0.22 (range 0.21-0.22).

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Designing knowledge sharing systems to support integrated eco-city planning and management

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IOP Conference Series: Earth and Environmental Science 2021年第1期737卷

作者： C E Supriana Informatics Engineering Study Program Faculty of Engineering Pasundan University Bandung Indonesia

The local government of a city as an organization depends on decision makers in government management to support the vision and mission of the city to achieve eco-city goals based on data and information from several knowledge domains. Knowledge management is seen as an increasingly important scientific discipline that encourages the creation, sharing and utilization of knowledge in an organization. Knowledge management is also related to the concept of intellectual capital, the most valuable organizational resource. Knowledge sharing systems are designed to help decision makers and stakeholders share their knowledge. Most knowledge management systems in organizations are designed to share the explicit knowledge of individuals, organizations and finally distributed to the community. This research is the approach in the development model that can be used in the governance to achieve eco-city goals. Complex knowledge about eco-cities requires policies that are based on current knowledge and can be implemented immediately with a thorough understanding of all aspects. The results of this study are understanding the problem of knowledge sharing as a valuable organizational asset, designing a knowledge sharing systems model, and improving systems to improve the quality of knowledge.

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Air Jet Erosion study on Stir Casted Metal Matrix Composite Aluminum-SiC 1

Air Jet Erosion Study on Stir Casted Metal Matrix Composite ...

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1st International Conference on Design and Application of engineering Materials 2018, IC-DAEM 2018 in conjunction with 11th Seminar Nasional Metalurgi dan Material, SENAMM 2018

作者： Longalayuk, M. Ruskandi, C. Setiamarga, B.H. Materials Engineering Study Program Faculty of Mechanical and Aerospace Engineering Institute of Technology Bandung Indonesia Foundry Technology Department Bandung Manufacturing Polytechnics Indonesia

For equipment that operates in high-speed abrasive media, erosion will be the major factor for its failure. Metal Matrix Composite (MMC) Aluminum-Silicon Carbide has been developed for improving the lifetime for such application. In this research, MMC Al-SiC has been made using Al-7075 scrap with 5%, 10%, and 15% SiC powder addition. This MMC was manufactured using stir casting technique with 1% Magnesium addition. Optical metallography has been done to know the SiC distribution homogeneity. Erosion resistance of the MMC was studied using Air Jet Erosion Test with Alumina powder as abrasives. The microstructural study showed that MMC Al-SiC has been successfully manufactured although the SiC particle distribution has not been fully homogeneous yet. Air Jet Erosion Testing revealed that the addition of 5% SiC powder was optimal in increasing its erosion resistance. The SiC addition from 10 to 15% did not improve its erosion resistance significantly. © 2019 Published under licence by IOP Publishing Ltd.

关键词： Silicon carbide

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A Detailed Analysis for the Performance of Artificial Intelligence System in Voice Recognition and its Classifications

A Detailed Analysis for the Performance of Artificial Intell...

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Advance Computing and Innovative Technologies in engineering (ICACITE), International Conference on

作者： Lamhot Naibaho Richa Mishra Dr. Ritu Gautam Suresh Babu Rajasekaran Dr Amaresh Jha Durgaprasad Gangodkar Faculty of Letters and Languages English Language Education Study Program Christian University of Indonesia Department of CSE Parul Institute of Engineering and Technology Parul University Vadodara Gujarat India Sharda School of Law Sharda University Greater Noida U.P. INDIA Group Product Manager United State School of Modern Media University of Petroleum and Energy Studies Department of CSE Graphic Era Deemed to be University Dehradun Uttarakhand India

Artificially intelligent machines possess cognitive capabilities that are comparable to those of human beings. Voice detection algorithms and methods have been developed for the purpose of identifying, differentiating, and verifying speakers. The amalgamation of speech recognition technology and artificial intelligence has facilitated advancements on a global scale. The implementation of conversational artificial intelligence (AI) holds the capacity to significantly transform the market. Law enforcement agencies could potentially employ this technology to identify perpetrators based on their speech patterns. Large-scale social gatherings can provide numerous benefits to researchers across various domains. This technology exhibits the capacity to benefit both the educational sector and the medical and healthcare domain.

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Effect of calcination temperature on hydrotalcite for organic dye waste elimination from aqueous solution via adsorption

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AIP Conference Proceedings 2023年第1期2540卷

作者： Lina Mahardiani Risma Arinda Finly Khoirunnisa Arabbani 1Chemistry Education Study Program Faculty of Teacher Training and Education Sebelas Maret University Surakarta Indonesia 2Material Science and Engineering Program National Taipei University of Technology Taipei Taiwan

Hydrotalcite as one of the advanced materials is applied in wide range of aspects like adsorption. This research aims to study the capability of the hydrotalcite like compound Mg-Al-CO3 material to remove the organic dye, namely, congo red and methylene blue in water through adsorption. Prior to the adsorption process, hydrotalcite like compound Mg-Al-CO3 was calcined within temperature ranges of 300-750°C. The adsorption process was carried out by batch method with variations in calcination temperature of the hydrotalcite material and variations in contacting time. The performance effectiveness of hydrotalcite was evaluated through the adsorption percentages based on the absorbance measurement data using the UV-Vis instrument. The results showed excellent hydrotalcite's capability of removing both organic dyes. Hydrotalcite calcined at 600°C was able to remove 94% of the organic dyes within 30 minutes.

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Survival analysis of Kasturi tobacco plants in Jember district using the stratified cox and extended cox models.

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MethodsX 2025年 14卷

作者： Angga Iryanto Pratama Dwi Rantini Ratih Ardiati Ningrum Arip Ramadan Fazidah Othman Data Science Technology Study Program Faculty of Advanced Technology and Multidiscipline Universitas Airlangga Surabaya 60115 Indonesia Research Group of Data-Driven Decision Support System Faculty of Advanced Technology and Multidiscipline Universitas Airlangga Surabaya 60115 Indonesia Information System Study Program School of Industrial and System Engineering Telkom University Surabaya Campus Surabaya 60231 Indonesia Department of Computer System and Technology Faculty of Computer Science and Information Technology University of Malaya Malaya Malaysia

In 2022, tobacco was the top export commodity, generating $106.3 million in sales. East Java Province contributes significantly to Indonesia's tobacco production, with an annual output of 188.6 thousand tons. Jember Regency is the area in East Java Province which is a Kasturi tobacco cultivation area. The productivity of Kasturi tobacco continues to decrease due to several factors that can affect the survival of the tobacco. This study aims to analyze the survival of Kasturi tobacco by creating stratified Cox and extended Cox models in order to handle factors that cannot fulfill the proportional hazard assumption. Based on the results of the analysis, the stratified Cox model is the best model with AIC and BIC values of 798.108 and 805.5748 respectively, while the extended Cox has AIC and BIC values of 840.2186 and 850.1732 respectively. Variables that can significantly affect the survival of Kasturi tobacco are the variable concentration of ZA fertilizer, pesticide concentration. The addition of ZA fertilizer must be appropriate, because if excessive it can cause poisoning of tobacco plants. Likewise with pesticides, if excessive it will cause damage to the leaves. This policy can increase the productivity of Kasturi tobacco. Then, Jember Regency contributes greater export capacity. • This paper aims to determine the factors that affect the survival of Kasturi tobacco plants in Jember • By using the extended Cox model, the best one is obtained using the Heaviside function with AIC and BIC values of 840.2186 and 850.1732, respectively • The stratified Cox model is better than the extended Cox model, which has AIC and BIC values of 798.108 and 805.5748, respectively

关键词： Productive agriculture Cox proportional hazard Stratified cox Extended cox Kasturi tobacco Cox Proportional Hazard Model, Stratified Cox Model, and Extended Cox Model

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Look into my eyes:What can eye-based measures tell us about the relationship between physical activity and cognitive performance?

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Journal of Sport and Health Science 2023年第5期12卷 568-591页

作者： Liye Zou Fabian Herold Sebastian Ludyga Keita Kamijo Notger G.Muller Matthew B.Pontifex Matthew Heath Ryuta Kuwamizu Hideaki Soya Charles H.Hillman Soichi Ando Brandon L.Alderman Boris Cheval Arthur F.Kramer Body-Brain-Mind Laboratory School of PsychologyShenzhen UniversityShenzhen 518060China Research Group Degenerative and Chronic Diseases MovementFaculty of Health Sciences BrandenburgUniversity of PotsdamPotsdam 14476Germany Department of Sport Exerciseand HealthUniversity of BaselBasel 4052Switzerland Faculty of Liberal Arts and Sciences Chukyo UniversityNagoya 466-8666Japan Department of Kinesiology Michigan State UniversityEast LansingMI 48824USA School of Kinesiology Faculty of Health SciencesUniversity of Western OntarioLondon ON N6A 3K7Canada Canadian Centre for Activity and Aging University of Western OntarioLondon ONN6A 3K7Canada Graduate Program in Neuroscience University of Western OntarioLondon ONN6A 3K7Canada Laboratory of Exercise Biochemistry and Neuroendocrinology Faculty of Health and Sport SciencesUniversity of TsukubaTsukuba 305-0006Japan Sport Neuroscience Division Advanced Research Initiative for Human High Performance(ARIHHP)Faculty of Health and Sport SciencesUniversity of TsukubaTsukuba 305-0006Japan Center for Cognitive and Brain Health Department of PsychologyDepartment of Physical TherapyMovementand Rehabilitation SciencesNortheastern UniversityBostonMA 02115USA Graduate School of Informatics and Engineering The University of Electro-CommunicationsTokyo 182-8585Japan Department of Kinesiology and Health Rutgers UniversityNew BrunswickNew BrunswickNJ 08854USA Swiss Center for Affective Sciences University of GenevaGeneva 1205Switzerland Laboratory for the Study of Emotion Elicitation and Expression(E3Lab) Department of PsychologyUniversity of GenevaGeneva 1205Switzerland Department of Psychology Center for Cognitive and Brain HealthNortheastern UniversityBostonMA 02115USA Beckman Institute University of Illinois at Urbana-ChampaignChampaignIL 61820USA

Background:There is a growing interest to understand the neurobiological mechanisms that drive the positive associations of physical activity and fitness with measures of cognitive *** better understand those mechanisms,several studies have employed eye-based measures(e.g., eye movement measures such as saccades,pupillary measures such as pupil dilation,and vascular measures such as retinal vessel diameter)deemed to be proxies for specific neurobiological ***,there is currently no systematic review providing a comprehensive overview of these studies in the field of exercise-cognition ***,this review aimed to address that gap in the ***:To identify eligible studies,we searched 5 electronic databases on October 23,*** researchers independently extracted data and assessed the risk of bias using a modified version of the Tool for the assEssment of study qualiTy and reporting in EXercise(TESTEX scale,for interventional studies) and the critical appraisal tool from the Joanna Briggs Institute(for cross-sectional studies).Results:Our systematic review(n=35 studies) offers the following main findings:(a) there is insufficient evidence available to draw solid conclusions concerning gaze-fixation-based measures;(b) the evidence that pupillometric measures,which are a proxy for the noradrenergic system,can explain the positive effect of acute exercise and cardiorespiratory fitness on cognitive performance is mixed;(c) physical training-or fitness-related changes of the cerebrovascular system(operationalized via changes in retinal vasculature) are,in general,positively associated with cognitive performance improvements;(d) acute and chronic physical exercises show a positive effect based on an oculomotor-based measure function(operationalized via antisaccade tasks);and(e) the positive association between cardiorespiratory fitness and cognitive performance is partly mediated by the dopaminergic system(operationalized via spo

关键词： Cognition Exercise Fitness Pupil size RetinaTagedAPTARAEnd

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Comparative study of Available Fuels for Boiler Selection

Comparative Study of Available Fuels for Boiler Selection

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2019 International Conference on Power, Energy and Innovations, ICPEI 2019

作者： Kongsuk, Rungnapa Boonpramote, Thitisak Chulalongkorn University Energy Technology and Management Program Graduate School Bangkok Thailand Chulalongkorn University Department of Mining and Petroleum Engineering Faculty of Engineering Bangkok Thailand

ISBN: (纸本)9781728152660

The ethanol manufacturing plant located in Phanomsarakham district, Chachoengsao province east of Thailand. The plant requires to improve the process by replacing a new boiler with capacity for generating 30 tons per hour of saturated steam. The boiler selection process is determining the steam required for the process, then determine the fuels available and their usability after that compare different types of boiler and finish the process with boiler purchasing. There are four available fuels in the area where the case study plant located are bituminous coal, wood, fuel oil C, and LPG. Consider by compared the heating value, fuel required to consume by the boiler and reference of each. The most possibility of fuel for the case study plant is bituminous coal. © 2019 IEEE.

关键词： Boilers

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