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International Conference on Mathematics and Natural sciences 2017, IConMNS 2017

作者： Candiasa, I.M. Santiyadnya, N. Sunu, G.K.A. Educational Science Study Program Post-Graduate Faculty Universitas Pendidikan Ganesha Bali81116 Indonesia Electronica Technology Education Study Program Faculty of Technology and Vocational School Universitas Pendidikan Ganesha Bali81116 Indonesia Educational Administration Post-Graduate Program Faculty Universitas Pendidikan Ganesha Bali81116 Indonesia

Problem posing is very important in learning mathematics. Many studies have indicated that problem posing can improve the ability to solve mathematics problems. Therefore it is necessary to encourage students systematically to do problem posing. This research tries to pack problem posing in puzzle frame in order to increase student's interest and ability to do problem posing. The puzzle game which is then directed to problem posing is assured can arouse students' enthusiasm, thus encouraging their involvement in problem posing activities. Two groups of junior high school students each consisted of 31 and 32 students selected as samples. The first group follow mathematics class with problem posing learning model that preceded by playing a puzzle but still in a mathematical environment. The second group follow the mathematics class with problem posing learning model only. At the end of the research student's interest and ability to do problem posing are compared by using MANOVA test. Wilks' Lambda test results F = 10.8 on significance (p) = 0.002. Based on these findings, it is concluded that the problem posing learning model in mathematics that is preceded by playing puzzles can increase students' interest and ability to do problem posing. © Published under licence by IOP Publishing Ltd.

关键词： Students

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AstroPix: A Pixelated HVCMOS Sensor for Space-Based Gamma-Ray Measurement

arXiv

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arXiv 2025年

作者： Steinhebel, Amanda L. Caputo, Regina Violette, Daniel P. Affolder, Anthony Bauman, Autumn Chinatti, Carolyn Deshmukh, Aware Fadayev, Vitaliy Fukazawa, Yasushi Jadhav, Manoj Kierans, Carolyn Kim, Bobae Kim, Jihee Klest, Henry Kroger, Olivia Kumar, Kavic Kushima, Shin Lauenstein, Jean-Marie Leys, Richard Martinez-Mckinney, Forest Metcalfe, Jessica Metzler, Zachary Mitchell, John W. Nakano, Norito Ott, Jennifer Peric, Ivan Perkins, Jeremy S. Rudin, Max R. Shin, Taylor K.W. Sommer, Grant Striebig, Nicolas Suda, Yusuke Tajima, Hiroyasu Valverde, Janeth Zurek, Maria NASA Postdoctoral Program NASA Goddard Space Flight Center MD United States University of California Santa CruzCA United States University of Colorado DenverCO United States NASA Office of STEM Engagement WashingtonDC United States Carleton College Minnesota United States Center for Research and Exploration in Space Science and Technology Maryland United States Physics Program Graduate School of Advanced Science and Engineering Hiroshima University Japan Argonne National Laboratory Illinois United States University of Maryland MD United States Institute for Space-Earth Environmental Research Nagoya University Japan Karlsruher Institut für Technologie Germany Rice University TX United States The George Washington University WashingtonDC United States Kobayashi-Maskawa Institute for the Origin of Particles and the Universe Nagoya University Japan Department of Physics Center for Space Sciences and Technology University of Maryland Baltimore CountyMD United States

A next-generation medium-energy gamma-ray telescope targeting the MeV range would address open questions in astrophysics regarding how extreme conditions accelerate cosmic-ray particles, produce relativistic jet outflows, and more. One concept, AMEGO-X, relies upon the mission-enabling CMOS Monolithic Active Pixel Sensor silicon chip AstroPix. AstroPix is designed for space-based use, featuring low noise, low power consumption, and high scalability. Desired performance of the device include an energy resolution of 5 keV (or 10% FWHM) at 122 keV and a dynamic range per-pixel of 25 − 700 keV, enabled by the addition of a high-voltage bias to each pixel which supports a depletion depth of 500 μm. This work reports on the status of the AstroPix development process with emphasis on the current version under test, version three (v3), and highlights of version two (v2). Version 3 achieves energy resolution of 10.4 ± 3.2% at 59.5 keV and 94 ± 6 μm depletion in a low-resistivity test silicon substrate. © 2025, CC BY.

关键词： Cosmology

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Effect of proteases on water-soluble and fat-soluble aroma precursors of goat visceras protein hydrolysate

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Food Bioscience 2022年第3期47卷 975-985页

作者： Ana Rita Ribeiro de Araújo Cordeiro Lorena Lucena de Medeiros Lary de Souza Olegário Leila Moreira de Carvalho Taliana Kenia Alencar Bezerra Maria Teresa Bertoldo Pacheco Mércia de Sousa Galvão Marta Suely Madruga Post Graduate Program in Food Science and Technology Department of Food EngineeringTechnology CentreFederal University of ParaibaCampus I58051-900João PessoaParaíbaBrazil Food Technology Institute (ITAL).Science and Food Quality Center 13070-179CampinasSão PauloBrazil

This study investigated the action of proteolytic enzymes in the production of goat viscera hydrolysates,and their flavoring *** study focus the production of flavor precursor molecules and the formation of volatile compounds resulting from four hydrolysis treatments:HA-Alcalase®,HF-Flavourzyme®,HN-Neutrase®,and HFN-Flavourzyme® and Neutrase®.The highest degree of hydrolysis (26.74%),number (23 volatiles) and concentration of volatile compounds (274.0 μg/L) were obtained with the action of *** main classes of volatile compounds identified in hydrolysates included acids,aldehydes,pyrazines,terpenes and Streacker *** acids,sugars and fatty acids were identified with higher concentrations in HF and HFN hydrolysates due to the low participation of these precursors in the formation of volatile ***,the use of Alcalase in the proteolysis of goat viscera stood out compared to other enzymes,providing impacting aroma compounds,such as pyrazines,for meat flavor.

关键词： Aroma precursors Flavoring Goat byproducts Proteases Enzymatic hydrolysates Volatile compounds

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Modeling the relationship between public transportation and traffic conditions in urban areas: A system dynamics approach

Modeling the relationship between public transportation and ...

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International Conference on Physics and Mathematics for Biological science 2019, ICOPAMBS 2019

作者： Sardjono, W. Selviyanti, E. Perdana, W.G. Information Systems Management Department BINUS Graduate Program Master of Information Systems Management Bina Nusantara University Jakarta Indonesia Health Department Politeknik Negeri Jember Jember Jawa Timur68124 Indonesia Post Graduate Program of Environmental Science School of Environmental Science University of Indonesia Jakarta11480 Indonesia

The goals of the paper were to describe were and find the relations between numbers of available public transportation and traffic congestion and other variables that can reduce traffic congestion in Jakarta. The data that used in the simulation were provided by DKI Jakarta Provincial Statistics Agency from view years ago. To analyze the problem, System Dynamics are used to simulate the condition in the future using the models created based on relations between several variables. The results of the analysis shows that numbers of available public transportation cannot reduce traffic congestion if the numbers of private transportation weren't decreased. It can be concluded that government must force their citizen to reduce the number of private transportation by increasing the inflation supported by increasing numbers of available public transportation to accommodate deficit in transportation while building new roads to accommodate transportation growth in the future. © Published under licence by IOP Publishing Ltd.

关键词： Traffic congestion

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Analysis of the combined injection of pulverized coal and charcoal into large blast furnaces

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Journal of Materials Research and technology 2013年第4期2卷 308-314页

作者： De Castro, José Adilson Araújo, Giselle De Mattos Da Mota, Izabel De Oliveira Sasaki, Yasushi Yagi, Jun-Ichiro Postgraduation Program in Metallurgical Engineering Universidade Federal Fluminense Volta Redonda RJ Brazil Environmental Metallurgy Laboratory Graduate Institute of Ferrous Technology POSTECH-Pohang University of Science and Technology Pohang Korea Republic of Tohoku University Sendai Japan

The simultaneous injection of pulverized coal and charcoal in the blast furnace has recently received remarkable attention due to its potential to decrease the coke consumption and increase productivity. This paper is focused on modeling the simultaneous injection of pulverized coal and charcoal into the blast furnace through the tuyeres with oxygen enrichment. This model treats the blast furnace as a multi-phase reactor and six phases are considered simultaneously, namely: gas, lump solids (lump iron ore, sinter, pellets, coke and small coke), hot metal, molten slag, pulverized coal and charcoal. Conservation equations of mass, momentum, energy and chemical species are solved simultaneously based on the finite volume method. The model is validated with a base case of actual operation using 215 kg/thm of pulverized coal injection and afterwards mixed injection of coal and charcoal are simulated for injection rate of 250 kg/thm. Model results indicated that the productivity of the blast furnace could be increased up to 25% with simultaneous injection combined with oxygen enrichment. © 2013 Brazilian Metallurgical, Materials and Mining Association.

关键词： Blast furnaces

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Comparison of the effectiveness electrocoagulation of dye (batik waste water) using iron and zinc as an anodes 3

Comparison of the effectiveness electrocoagulation of dye (b...

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3rd International Conference on Chemical and Material Engineering, ICCME 2018

作者： Suhartana, S. Purwanto, P. Darmawan, Adi Doctoral Program in Environmental Science Diponegoro University Indonesia Post Graduate Diponegoro University Indonesia Inorganic Chemistry Laboratory Chemistry Departement Faculty of Sciences and Mathematics Diponegoro University Indonesia

This study aims to obtain dye (batik waste water) treatment by electrocoagulation with optimal results. The performance of electrocoagulation process was carried out in batch reactor. Four variables were taken which thought to greatly influence the electrocoagulation process, such as: distance between electrodes, voltage, acidity (pH) and electrolysis time. In this process, samples of 20 mL were taken out from the batch at 5, 10, 15, 20, 25, 30, 35, 40, 45 dan 50 minutes of contact time. Results obtained show that the most effective removal efficiency could be achieved at alkaline condition. Research that has been done shows that the percentage of wastewater treatment results is strongly influenced by the four variable changes. The study demonstrated that the lowest degradation efficiency occours at acid pH, while an increase temperature has only a slight effect on the electrocoagulation process. The maximum results from the electrocoagulation processes was obtained, with determine by measurement of chemical oxygen demand (COD). The results showed that, iron is better used as an anode than zinc. The effectiveness electrocoagulation reached optimal at 96.54% (at Fe anode) and 81.65% (at Zn anode), at alkaline condition (pH > 9), electrolysis time of 30 minutes, electrode distance of 1 cm and temperature at 70°C. © 2019 Published under licence by IOP Publishing Ltd.

关键词： Anodes

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Production of Biogas from Organic Fruit Waste in Anaerobic Digester using Ruminant as the Inoculum 24

Production of Biogas from Organic Fruit Waste in Anaerobic D...

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24th Regional Symposium on Chemical Engineering, RSCE 2017

作者： Budiyono Manthia, Firliani Amalin, Nadya Hawali Abdul Matin, Hashfi Sumardiono, Siswo Department of Chemical Engineering Engineering Faculty Diponegoro University Semarang50275 Indonesia Master Program of Environmental Science School of Post Graduate Studies Diponegoro University Semarang50275 Indonesia

Organic waste, fruit waste and vegetable waste are the best substrate to produce biogas. Waste management system for producing biogas can be used as a solution with the waste problem by converting the wastes into biogas. This study is expected to review of the effect of substrate type and substrate composition for the volume of biogas produced. In this study, materials consist of fruit wastes (oranges, apples, papayas, and tomatoes), cow ruminant, urea, cow dung, Na2CO3 buffer, NH4HCO3 buffer, and distilled water with variations of the substrate materials, F/ W, and the buffer types. The addition of cow manure and Na2CO3 buffer with 1:2 of F/W, production of biogas is greater than variable which is used NH4HCO3 buffer and without the addition of cow dung. Variables with addition of cow dung with 1:1 of F/W and using Na2CO3 buffer, the result is greater than the variable using the same buffer but without the addition of cow dung and variables with 1:1 of F/W with the addition of cow dung and Na2CO3 buffer and variables with the same feed and without the addition of cow dung produce more biogases than variable which is the using NH4HCO3 buffer, 1:1 of F/W and without the addition of cow dung. © The Authors, published by EDP sciences, 2018.

关键词： Biogas

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A cross-sectional study on gut microbiota and inflammation in patients with chronic kidney disease

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The American journal of the medical sciences 2025年

作者： Bruna R Paiva Júnia Schultz Fluvio Modolon Jessyca S de Brito Julie A Kemp Marcia Ribeiro Marcelo Ribeiro-Alves Lia S Nakao Drielly Vargas Beatriz G Baptista Larissa Fonseca Livia Alvarenga Intikhab Alam Roberto Incitti Alexandre Soares Rosado Ludmila F M F Cardozo Denise Mafra Graduate Program in Cardiovascular Sciences Fluminense Federal University (UFF) Niterói RJ Brazil. Bioscience Program Biological and Environmental Science and Engineering (BESE) Division King Abdullah University of Science and Technology (KAUST) Thuwal Makkah 23955 Saudi Arabia. Oceanographic Institute University of São Paulo São Paulo SP Brazil. Graduate Program in Biological Sciences - Physiology Federal University of Rio de Janeiro (UFRJ) Rio de Janeiro RJ Brazil. Graduate Program in Nutrition Sciences Fluminense Federal University (UFF) Niterói RJ Brazil. HIV/AIDS Clinical Research Center National Institute of Infectology Evandro Chagas (INI/Fiocruz) Rio de Janeiro RJ Brazil. Department of Basic Pathology Federal University of Paraná Curitiba PR Brazil. Graduate Program in Medical Sciences Fluminense Federal University (UFF) Niterói RJ Brazil. Graduate Program in Biological Sciences - Physiology Federal University of Rio de Janeiro (UFRJ) Rio de Janeiro RJ Brazil Computational Bioscience Research Center Biological and Environmental Science and Engineering (BESE) Division King Abdullah University of Science and Technology (KAUST) Thuwal Makkah 23955 Saudi Arabia. Graduate Program in Cardiovascular Sciences Fluminense Federal University (UFF) Niterói RJ Brazil Graduate Program in Nutrition Sciences Fluminense Federal University (UFF) Niterói RJ Brazil Graduate Program in Medical Sciences Fluminense Federal University (UFF) Niterói RJ Brazil. Electronic address: dmafra30@***.

BACKGROUND:This study investigated the inflammatory and gut microbiota profile in chronic kidney disease (CKD) patients undergoing hemodialysis (HD) and peritoneal dialysis (PD). METHODS:A total of 249 patients undergoing HD and 61 patients on PD participated in the study. The mRNA expressions of nuclear factor erythroid 2-related factor-2 (NRF2), nuclear factor-κappa B (NF-κB), mitochondrial transcription factor A (TFAM), peroxisome proliferator-activated receptor-gamma coactivator 1-alpha (PGC-1α) were evaluated in peripheral blood mononuclear cells (PBMCs) by quantitative real-time PCR. Malondialdehyde (MDA), interleukin 6 (IL-6), and routine biochemical parameters were also analyzed. The fecal DNA extraction was performed, and the V4 regions of the bacterial 16S ribosomal RNA gene were sequenced. Uremic toxins such as p-cresyl sulfate (p-CS), indoxyl sulfate (IS), and indole-3-acetic acid (IAA) plasma levels were determined by HPLC. RESULTS:MDA, IS, and p-CS levels were lower in PD than in HD patients. The mRNA expression of the transcription factors was not different between groups. Gut microbial α-diversity indices showed no significant difference between groups, but the β-diversity was different in PD patients. Members of the genera Meditarraneibacter, Roseburia, Agathobacter, Anaerobutyricum, Collinsella, Streptococcus, Clostridium, and Bacteroides, as well as the families Lachnospiraceae and Enterobacteriaceae, appear to be positively correlated with most dietary factors, particularly lipid and phosphorus intake. CONCLUSION:Our findings indicate that in patients with CKD on HD, there is increased plasma retention of uremic toxins and reduced gut microbial diversity compared to PD patients.

关键词： chronic kidney disease gut microbiota inflammation mitochondrial dysfunction oxidative stress

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Study of Biogas Production from Cassava Industrial Waste by Anaerobic Process 24

Study of Biogas Production from Cassava Industrial Waste by ...

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24th Regional Symposium on Chemical Engineering, RSCE 2017

作者： Budiyono Primaloka, Arindra D. Ardhannari, Listi Matin, Hashfi H.A. Sumardiono, Siswo Department of Chemical Engineering Engineering Faculty Diponegoro University Semarang50275 Indonesia Master Program of Environmental Science School of Post-Graduate Studies Diponegoro University Semarang50275 Indonesia

Biogas production processes from tapioca wastewater have several problems that cause the biogas production is not optimal, such as pH drop at beginning of the process because the rate of acid formation is too fast and the rate of starch wastewater degradation is too slow. Therefore, to obtain optimal biogas production it is required two-stage reactor. The purposes of this research were to (i) study the influence of one stage fermentation and two stage fermentation on biogas production, (ii) study the effect of buffer Na2CO3 on biogas production, and (iii) study the effect of methanogenic bacteria concentration on biogas production from cassava starch effluent. The first method of our research was hydrolysis process by "Saccharomyces cereviceae" as substrate activator. The second is the arrangement of pH and the last is process of methane production. The results showed that the highest biogas production is achieved at concentration of methanogenic bacteria 20% (v/v) that is equal to 2458 ml. At concentration of 8% (v/v) and 15% (v/v), biogas production was 2105 ml and 2117 ml. The addition of Na2CO3 can extend to 16 days with accumulation of 372 ml. While without the addition of buffer, biogas production period was only 9 days with accumulation of 620 ml. In semi continuous process, the analysis carried out every 3 days. Highest biogas production achieved in the variable addition of yeast with the accumulation 9329 ml. Without yeast, accumulation of biogas was 6831 ml. Yeast is use as substrate activator so it can accelerate the hydrolysis process and increased biogas production. The addition of Na2CO3 is increase the alkalinity so the pH drop did not occur early in the process. © The Authors, published by EDP sciences, 2018.

关键词： Yeast

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Analysis of delay factors on drilling projects on PT China Oilfields Services Limited 2

Analysis of delay factors on drilling projects on PT China O...

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2nd International Conference on Biospheric Harmony Advanced Research, ICOBAR 2020

作者： Sardjono, W. Perdana, W.G. Ansori, R. Utama, D.N. Information Systems Management Department BINUS Graduate Program-Master of Information Systems Management BINA NUSANTARA University Jakarta11480 Indonesia Post Graduate Program School of Environmental Science University of Indonesia Jakarta Indonesia Graduate Program Master of Business Administration Faculty of Economic and Business University of Gadjahmada Yogyakarta Indonesia Computer Science Department BINUS Graduate Program-Master of Computer Science Bina Nusantara University Jakarta11480 Indonesia

In carrying out drilling projects at PT China Oilfields Services Limited ( COSL) Indo, especially Project 1 to Project 4, there were a mismatch between the initial plan of the project and the actualisation in the field because there were inhibiting factors in implementing the project. The purpose of the research was to look the factors that caused for the additional time in well drilling project at PT. COSL Indo, to build a relationship model of these factors, and formulate a strategy for the company to be able to overcome the occurrence of additional time in the future project. Data analysis was conducted by using a factor analysis method and the location of the research was carried out in just one company with 102 valid respondents. The results of the research indicate that there are four factors that influence the time gap, namely Project Management Activities, Risk Analysis and Procurement, Manage Stairs, and Project Planning Development. By knowing the causes of the delay, companies can find the best solutions for future learning and the impact on environmental, social and economic problems can also be anticipated so that sustainable development occurs in the context of petroleum management. © Published under licence by IOP Publishing Ltd.

关键词： Risk analysis

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