bluuebunny/crossref_metadata_2025 huggingface dataset:
Estimation of Volcanic Earthquakes at Kirishima Volcano Using Machine Learning
Authors: Yukutake Yohei , Kim Ahyi , Ohminato Takao
Published: April 2023

Volcanic earthquakes provide essential information for evaluating
volcanic activity. As volcanic earthquakes are often characterized by
swarm-like features, conventional methods using manual picking require
much time in constructing seismic catalogs. In this study, using a
machine learning framework and a trained model from a volcanic
earthquake catalog, we obtained a detailed picture of volcanic
earthquakes during the past 12 years at Kirishima volcano, southwestern
Japan. We could detect earthquakes about 7.5 times larger than those in
a conventional seismic catalog and obtain a high-resolution hypocenter
distribution through waveform correlation analysis. Hypocenter clusters
were estimated below the craters where magmatic or phreatic eruptions
occurred in recent years. Increases in seismic activities, b-values, and
low-frequency earthquakes were detected before the eruptions. The
process can be carried out in real time, and monitoring volcanic
earthquakes through machine learning contributes to understanding the
changes in volcanic activity and improving eruption predictions.
Phenotypes of Psoriasis in Patients in Need of Systemic Treatment, and Correlation with Personal Habits, Treatment History and Comorbidities: A Cross-sectional Latent Class Analysis of Data from the Italian PsoReal Registry
Authors: Cazzaniga Simone , Heidemeyer Kristine , Naldi Luigi
Published: April 2023

Abstract is missing (Short communication)
Upadacitinib for Successful Treatment of Alopecia Universalis in a Child: A Case Report and Literature Review
Authors: Yu Dianhe , Ren Yunqing
Published: April 2023

Abstract is missing (Short communication)
Emission and Energy Characteristics of the Combination Use of Coal and Biomass in Circulating Fluidized Bed Boilers (CFBB) in Steam Power Plant
Authors: Burhandono Ardian , Djaeni Moh. , Widodo Agung Suedy Sri
Published: April 2023

Currently there are still many power plants using fossil fuels, including oil, gas and coal to produce electricity. The problem recently received by many developing countries, including Indonesia, is environmental degradation due to CO, SO2 and NOx emissions. Co-burning of biomass with coal is in most countries one of the most economical technologies available today for significant pollutant reduction. This study tested the combined combustion of coal and biomass in a direct co-firing Circulating Fluidized Bed Boiler (CFBB) with two treatments, namely   5 wt% sawdust biomass and 95 wt% coal, 5 wt% woodchip biomass and 95 wt% coal. The results of the two tests were compared with the parameters when using 100 wt% coal. This study aims to (1) analyze the energy produced from burning a combination of coal and biomass, and (2) analyze the emission content, including SO2, CO, NOx. The mixture of coal and sawdust produces 82 MWh of gross electricity, higher than coal and woodchips and requires the smallest amount of fuel, namely 18.7 tons per hour. The 5 wt% woodchip emitted the lowest emissions compared to the other 2 cases, namely 71.5 mg/Nm3 SO2 and 222.4 mg/Nm3 for NOx. The lowest CO emission was issued by a 5 wt% woodchip mixture, namely 4.0 ppm.
Dynamics of agglomeration and competition in the hotel industry: A geographically weighted regression analysis based on an analytical hierarchy process and geographic information systems (GIS) data
Authors: Illescas-Manzano María D. , Martínez-Puertas Sergio , Marín-Carrillo Gema M. , Marín-Carrillo María B.
Published: April 2023

Research background: The effects of locating next to other establishments of equivalent activity is a decision with serious and far-reaching implications, not only from the point of view of location decisions but also with regard to competitive strategy, pricing, or promotion decisions. The literature provides evidence of the negative effects of being proximate to competitors (erosion of market share), but there are also benefits associated with the increased attraction of demand (attraction effect). This phenomenon is of particular interest in the case of hospitality, where hotel concentrations can be found around certain tourism resources, and is a crucial factor in hoteliers' decisions as they evaluate these contradictory effects.
Purpose of the article: Drawing from the relevance that the confrontation between agglomeration and competition has in the hotel industry, our study aims to examine if this confrontation can be driven by geographical location and how both vertical and horizontal differentiation factors can unbalance it.
Methods: Based on the use of geographical information systems and the estimation of a geographically weighted regression model with a wide dataset that includes 3,153 European hotels located in Spain, France and the United Kingdom.
Findings & value added: We extend agglomeration and competition theoretical bodies related to location decisions by providing new findings about their simultaneous effect. Specifically, this study contributes to filling the gap regarding their combined effects on pricing and the conditions under which one prevails over the other. Results show that the role of geographical location and a hotel?s online reputation are more decisive differentiation factors than hotel category when explaining the asymmetry of the effects of agglomeration and competition.
Effect of varnish coating agent application on surface hardness of glass ionomer cement after immersion in carbonated drinks
Authors: Arsanti Natasya , Megantoro Aryo , Meidyawati Ratna
Published: April 2023

ABSTRACTIntroduction: Glass ionomer cement is a material for treating dental caries. The disadvantage of glass ionomer cement is that if it comes into contact with acids before maturation, there will be a decrease in mechanical properties which is indicated by a decrease in surface hardness. Surface hardness has a relationship with aesthetics and resistance to scratches that can cause fractures. Coating agents like varnishes are required for glass ionomer cement to protect them from liquids with low pH level, such as carbonated drinks. Unfortunately many dentists neglected this procedure. The purpose of this research was to compare the surface hardness of glass ionomer cement which is protected and not protected by coating agent when its maturation is in contact with acids, to emphasize the importance of this procedure. Methods: This research was a laboratory experimental study. Samples consist of 24 glass ionomer cement specimens (GC Fuji IX GP EXTRA). Glass ionomer cement specimens were divided into 4 treatment groups. The first group was not applied with varnish and stored without immersion, the second group was applied with varnish and stored in artificial saliva, the third group was applied with varnish and soaked in carbonated drinks, and the last group was not applied with varnish and was immersed in carbonated drinks. The data that has been collected was processed and analyzed using the computer-based application IBM SPSS Statistics version 23.0. Results: There was a significant increase in the surface hardness of glass ionomer cement in all treatment groups. There was a significant difference in the mean surface hardness of glass ionomer cement after immersion in carbonated drinks between the groups that were applied with varnish coating agent and that without application of varnish coating agent. Conclusion: The surface hardness of glass ionomer cement restoration which was applied with varnish coating agent has a higher value compared to those not applied with varnish coating agent after immersion on carbonated drinks.Keywords: carbonated drinks, glass ionomer cement, microhardness test; saliva, varnish coating agent
Prácticas editoriales y culturales en el Gran La Plata (2015-2021): Entrevistas
Authors: Bonfiglio Florencia , Mallol Anahí , Merbilhaá Margarita , Rogers Geraldine
Published: April 2023

Este libro recoge entrevistas realizadas entre marzo de 2020 y noviembre de 2021 a editores y editoras independientes, libreros y libreras, docentes, artistas, poetas y narradoras de nuestra región que en los últimos años han dado continuidad o emprendido proyectos relevantes no solo en el ámbito literario, artístico y editorial, sino relacionados también con el uso de la palabra oral en el espacio público, con una vocación profundamente transformadora. El libro intenta realizar una contribución a los estudios socio-culturales sobre nuestra región, en cuanto expone parte de los resultados del Proyecto Unidad Ejecutora (CONICET) “Heterogeneidad social, conflictos sociopolíticos y políticas públicas en el Gran La Plata (2015-2019)” radicado en el IdIHCS-UNLP/CONICET. Su objeto de análisis son las transformaciones recientes de la sociedad argentina, en el más amplio contexto de los cambios en el modelo de desarrollo capitalista y de los procesos de globalización y glocalización, que la serie de entrevistas procura relevar.
First insights into the morphological development of tarsal claws in terrestrial oribatid mites
Authors: Kerschbaumer Michaela , Pfingstl Tobias
Published: April 2023

Mites occupy a wide range of ecological niches and are good models to investigate correlations of morphological structures and ecology in arthropods. Here we compare tarsal claw shape of three terrestrial oribatid mite species with different ecological backgrounds. By means of geometric morphometrics we describe shape, size and development of the tarsal claw of the monodactyl mite species Lamellovertex caelatus and Platynothrus peltifer, and the tridactyl Melanozetes meridianus. After analysis of juvenile and adult mites we can distinguish the euryoecious P. peltifer and the alpine M. meridianus with similar claw curvatures from the saxicolous L. caelatus with considerably less curved claws. The claw height of P. peltifer, on the other hand, is remarkably higher than in the other two species. Despite these differences, no correlation between claw characteristics and environmental factors can be inferred. During the development of the mites, claw curvature and shape remain constant from protonymph to adult and claw size increases direct proportionally with body growth in all studied species. Neither the monodactyl nor the tridactyl species show any specific changes in claw characteristics.
Gender differences in research collaborations and academic advancement among veterinary medical college faculty
Authors: Morello Samantha L. , Nelson Laura , Fubini Susan L.
Published: April 2023

OBJECTIVE

To examine patterns of collaborative research behavior by gender among veterinary academic faculty to determine whether differences exist in how men and women access resources as a contributing factor to the advancement gap.

SAMPLE

710 faculty from 23 veterinary medical colleges.

PROCEDURES

An online questionnaire was sent through listservs at participating institutions and data were collected anonymously. Responses related to professional demographics, resources, collaboration, and elements of environmental culture were analyzed to identify associations among variables. Proportional odds logistic regression was utilized to examine the effect of gender on academic rank.

RESULTS

Male and female faculty reported participating in collaborations at equal rates. Men were more likely to engage in research collaborations with other men. These collaborations were more common than collaborations between women or between women and men. Men had 47% higher odds of more advanced academic rank compared with women and controlling for relevant factors. While there was no difference in the value of startup packages listed by men and women, women were more likely to report gender as a disadvantage in accessing resources and opportunities.

CLINICAL RELEVANCE

Research productivity is a main factor driving academic promotion. To improve gender equity in career advancement and to support scholarship among all faculty, the creation of institutional development programs focused on facilitating collaborations and resource sharing may be a strategic area for veterinary academic leaders to consider.
Journals
Authors: Allen Jeffrey , Jenkins Caitlyn , Moustakis Allie , Poltorac Emily , Bansal Mayank , Dignard Caitlyn , Pomfret Jayson , Simon Nisha , Swartz Mark
Published: April 2023

Following an introduction reflecting on undergraduate student publishing by Mark Swartz, Scholarly Publishing Librarian at Queen’s University, the panelists introduced the scope of their respective journals, Qapsule, Queen's Law Journal, and Politicus, and what motivates each journal representative to contribute to publishing initiatives at Queen’s University.
Questions posed by the moderator to the panelists facilitated discussion and addressed the various aspects of the journal publishing process including the article review process, journal awareness and marking strategies, and undergraduate student publishing opportunities. The audience participated by asking questions of the panelists throughout the session.
Ideias de Anísio Teixeira sobre educação e cultura em jornais do Alto Sertão da Bahia, na primeira metade do século XX
Authors: Fernandes Francielly Keyse Martins , Reis Joseni Pereira Meira
Published: April 2023

O objetivo do estudo foi mapear ideias sobre educação e cultura defendidas por Anísio Teixeira e divulgadas no jornal A Penna, em Caetité, BA, no início do século XX. Tomou-se o impresso como fonte de busca e objeto de investigação, para uma pesquisa histórica e fundamentada ‒ teórica e metodologicamente ‒ na cultura escrita e na história da educação. Os resultados evidenciaram como Teixeira, desde a infância, já se destacava na escola e nos textos publicados no impresso O Bem-ti-vi, do qual era um dos redatores. No jornal A Penna, identificaram-se, ainda, as mudanças ocorridas com o educador, que passou de defensor da estreita relação entre a Igreja Católica e a escola no processo educativo a opositor do pragmatismo dos jesuítas em detrimento do pragmatismo liberal do filósofo John Dewey.
Toivottava tulevaisuus ja miten siihen päästäisiin
Authors: Holopainen Mika
Published: April 2023

Viime syksynä Suomen tieteellisen kirjastoseuran kaksi työryhmää järjestivät yhteistyössä kaikille avoimen tulevaisuustyöpajan. Etäyhteydellä toteutettu työpaja eteni SITRAn kehittämän konseptin mukaisesti. Tavoitteena oli lisätä kykyä kuvitella erilaisia tulevaisuuksia sekä ideoida toimenpiteitä toivotun tulevaisuuden toteutumiseksi. Työpajassa hahmoteltiin tulevaisuutta vuonna 2050, joten osallistujilla oli mahdollisuus irtautua kunnolla nykyhetkestä ja käyttää mielikuvitusta varsin etäiseltä tuntuvan tulevaisuuden visioimiseen
Ammattilehtien artikkelit esiin – metadatayhteistyötä kaivataan!
Authors: Elenius Leena , Ylitalo-Kallio Päivi
Published: April 2023

Ammattikorkeakouluopiskelussa tärkeää asiantuntijatietoa julkaistaan ammatillisissa lehdissä. Niiden tehokas hyödyntäminen vaatisi metadataa, mutta sitä ei tuoteta kattavasti. Lisäksi lehtien julkaiseminen ja myynti on monimuotoistunut, minkä vuoksi lehtikokoelman ylläpito vaatii kirjastoilta uudenlaista osaamista.
Kaukopalvelua ja aineistojen yhteiskäyttöä: IFLA ILDS -konferenssin kuulumiset
Authors: Leppämäki Juha
Published: April 2023

Maailman jälleen avauduttua kaukopalvelusta ja aineistojen yhteiskäytöstä kiinnostuneet pääsivät jälleen kokoontumaan IFLA ILDS -konferenssiin. Seitsemästoista konferenssi järjestettiin Dohassa, Qatarin kansalliskirjastossa 20.–22.9.2022. Konferenssin teemana oli aineistojen yhteiskäyttö pandemian aikana ja sen jälkeen.
Injury before and during COVID-19 - consequences of quarantine in a pediatric emergency department
Authors: Costa Adriana , Monteiro Bernardo , Mascarenhas Maria , Almeida Helena
Published: April 2023

OBJECTIVES: Evaluate the impact of confinement due to COVID-19 in pediatric emergency department (ED) visits due to injuries. METHODS: Retrospective study performed in a Portuguese hospital. All ED visits from March 19 to May 19 2020 (pandemic confinement) were included and compared with ED visits of the same period in the previous years from 2012 to 2018 (pre-pandemic). RESULTS: Between 19 March and 18 May 2020, 1,879 children attended the ED (mean 31 children per day), 19.3% due to injury (mean 6 injuries per day). The average per year in the pre-pandemic group was 10,042 visits (mean 167 children per day), 18.5% due to injuries (mean 30 injuries per day). In the pre-pandemic period 53.4% of injuries occurred in teenagers (>10 years old) and 21.7% in children under 6 years old. In 2020, 34% occurred in teenagers and 58.6% in children under 6 years old. Trauma was responsible for 92% of pre-pandemic admissions, followed by poisoning (5.6%) and child abuse (1.6%). During pandemic, trauma was still the most frequent cause of injury (82%), while the percentage of poisoning (14.4%) and child abuse (3.6%) increased. In 2012-2018, there was a clear difference in the weekly cycle of admissions attributed to injury in the ED, with a lower frequency on weekends. This difference was no longer seen during the pandemic, with a regular distribution by days of the week. CONCLUSION: Confinement has profoundly altered the activity of pediatric EDs and had serious consequences in children’s lifestyle.
Sistem Pembayaran Hasil Cetak Printer Berbasis Mikrokontroler dan Near Field Communication (NFC)
Authors: Desry Anggy Novira , Ratna Aisuwarya
Published: April 2023

The print-out price for printer services varies according to the density of the paper and the amount of ink used, and the payment is made manually by calculating the total print output. Therefore a system is created that can display rates and total invoices automatically based on time printed, as well as automatic payments that make it easier for service providers and service users. The design of this system consists of Arduino mega, ESP8266, relay, Near Field Communication (NFC), and printer. This system can distinguish the print price rates according to the time of printing, the time span of printing and the tariff is Rp. 300.00 with a printing time of 1-6 seconds, Rp. 500.00 with a time of 7-13 seconds, and finally Rp. 700, 00 with a time span above 14 seconds. The success rate of this system in classifying print tariffs is 95%.
ASPECTOS DAS CAPACIDADES DINÂMICAS EM EMPRESA DE INOVAÇÃO: UM ESTUDO DE CASO NA STARTUP HAND TALK
Authors: Silva Alexsandra , De Freitas Filho Sérgio Rodrigues , Neves Juliana Valença de Sousa
Published: April 2023

O objetivo deste trabalho é analisar o desenvolvimento das capacidades dinâmicas na startup Hand Talk, empresa que tem como negócio a utilização de tecnologia para transpor barreiras entre surdos e ouvintes com inovação e acessibilidade digital. Com abordagem qualitativa foi realizado estudo de caso único, visando explorar e descrever características observáveis da teoria das capacidades dinâmicas na performance desenvolvida pela Hand Talk no período de 2012 a 2022. Como resultado, as observações sugerem que a empresa identificou oportunidade, aprofundou o conhecimento sobre o público alvo, ultrapassou fronteiras e criou um modelo de negócio capaz de absorver as demandas dos usuários e implantar modificações contínuas de seus serviços para possibilitar acessibilidade digital de surdo com o mercado, alinhando, portanto, às três fases de capacidade dinâmica porposta por Teece (2007) de detecção de oportunidades (sensing); aproveitamento das oportunidades (seizing); e gerenciamento de ameaças e transformações (reconfiguration).
LINGUAGEM, IDENTIDADES E ATUAÇÃO DE SECRETÁRIOS EXECUTIVOS: UMA ABORDAGEM DISCURSIVA DE ANÚNCIOS DE EMPREGO
Authors: Martins Louis Guillaume Théodore Bueno Santos , Da Silva Edlane Alves , Ferreira Juliana Vicente
Published: April 2023

Neste artigo analisamos anúncios de emprego da área Secretarial no intuito de compreender a relação estabelecida entre construção de identidades e uso de estratégias linguísticas que engendram o perfil almejado pelas instituições. O corpus da pesquisa é formado por ofertas de emprego divulgadas, por meio do aplicativo WhatsApp, durante a pandemia de COVID-19. Utilizamos os pressupostos teóricos da Análise de Conteúdo para interpretação de dados, e os estudos de Silva, Hall e Woodward (2018) serviram para abordarmos a relação entre identidade social e estratégias linguísticas. Os resultados demonstram que os anúncios apresentam estereótipos e também exigências de um perfil profissional que não condizem com a atuação profissional de um secretário executivo.
PERCEPÇÃO SOBRE O PROGRAMA 5S: ESTUDO DE CASO EM UMA PROPRIEDADE RURAL MATO-GROSSENSE
Authors: Sznitowski Adelice Minetto , Gonçalves Cristiane Paulino Gomes , Souza Elaine Rodrigues , Miranda Lucilene Campos Ferreira , Pereira Mayke Silva dos Santos , Ferreira Rita Camila Keserle de Oliveira , Machado Vivieni Lara
Published: April 2023

O agronegócio é dos setores representativos da economia brasileira e dele fazem parte as propriedades rurais, as quais em suas atividades demandam de gestão para melhor uso dos seus recursos. Embora adotem modernas tecnologias de produção, a forma como gerenciam seus negócios precisa aprimorar. Dentre as alternativas para melhorar a gestão/organização desse ambiente, pode ser adotado o programa 5S que, embora de simples aplicação, traz benefícios. Os cinco sensos são: utilização, organização, limpeza, padronização e disciplina. Como forma de contextualizar o uso do programa 5S, realizou-se estudo de caso em uma propriedade rural mato-grossense que adota o 5S desde 2012 e apresenta retratada sua percepção. Baseado em documentos e por meio de questionário direcionado a todos os níveis da propriedade rural, os dados coletados revelaram que, similar ao contexto urbano, em propriedades rurais o programa é passível de ser adotado e traz melhorias. Com isso, o estudo contribui para encorajar gestores rurais quanto implantação desse programa e assim colaborar para a gestão, a qual carece de melhoria no âmbito rural.
AUTOMEDICAÇÃO PRATICADA POR PROFISSIONAIS DA SAÚDE DE CURITIBA QUE ESTÃO NO COMBATE DA COVID-19
Authors: Horst Hamilton , Américo de Souza Rodrigo , Christoff Adriana de Oliveira
Published: April 2023

O artigo tem como objetivo avaliar o padrão de automedicação realizada por profissionais da saúde de UTIs na cidade de Curitiba em hospitais que prestam atendimento a pacientes com Covid-19, identificar os principais grupos terapêuticos utilizados, apontar os principais motivos relacionados, verificar a prevalência entre alguma classe profissional e nível de escolaridade quanto ao hábito da automedicação, apontar a frequência de uso e os locais de aquisição. Foi realizada uma pesquisa com abordagem quantitativa do tipo descritiva com dados obtidos através de uma entrevista por questionário online, elaborado no Google forms, onde os participantes responderam à questões objetivas. Participaram da pesquisa 61 indivíduos que atenderam aos critérios de inclusão. Desse total, 65,57% afirmaram utilizar medicamentos sem prescrição, sendo em sua maioria mulheres casadas, com faixa etária entre 31 a 40 anos. Os fisioterapeutas apresentaram maior representatividade na pesquisa, enquanto os enfermeiros manifestaram proporcionalmente maior utilização de medicamentos sem prescrição. O nível de escolaridade foi maior entre os adeptos à automedicação. Metade dos entrevistados que afirmou utilizar medicamentos sem prescrição, declarou que foi em decorrência da pandemia. Analgésicos, anti-inflamatórios e relaxantes musculares foram os medicamentos mais citados, e a principal causa foi a dor. O principal local de aquisição dos medicamentos foi a farmácia, e 80% dos entrevistados consideram incorreto o hábito da automedicação. Presumimos que o uso de medicamentos isentos de prescrição (MIPs) foram os mais consumidos, portanto, visando o uso racional de medicamentos e a automedicação de maneira responsável, destaca-se a figura do farmacêutico como elemento fundamental nesse processo.
Maximum Allowable Annular Surface Pressure (MAASP) Standards Calculations Study; a Field Case Study
Authors: Yasutra Amega , Darmawan Ganesha R , Muhammad Rafki
Published: April 2023

Well integrity failures may arise during the production phase of a well in a field. Those failures could create a Sustained Casing Pressure (SCP), a pressure that is measurable at the wellhead that can not be bled-off. SCP has to be addressed carefully to avoid any uncontrolled fluid flow to other formation or to surface. To maintain SCP value from degrading the other barrier integrity, the pressure threshold should be known and maintained for each annulus in a well. The maximum pressure threshold known as Maximum Allowable Annular Surface Pressure (MAASP).

This case study will calculate MAASP from three wells in X field using three known method as outlined in API RP90-2 and ISO 16530-1. API RP 90-2 define two methods in calculation MAASP (known as MAASP – Maximum Allowavle Wellhead Operating Pressure), Simple Derating Method (SDM) and Explicit Derating Method (EDM).

The result then compared and evaluted to know the differences, trend of MAASP for each methods, and create a generalization of MAASP/depth for field rule of thumb. For A annulus, the MAASP obtained using  API RP90-2  SDM and  EDM method is always greater than that obtained using the ISO  16530-1 method. However, for B annulus, the MAASP   obtained using the API RP 90-2 SDM method varies, occasionally being greater or less than the ISO 16530-1 method. While in C annulus, the MAASP obtained using the API RP 90-2 SDM and EDM methods is always less than the ISO 16530-1 method. The MAASP/depth generalization will be presented for MAASP ISO 16530-1.
Pressure Transient Analysis using Generated Simulation Reservoir Data for Dual Porosity Model of Naturally Fractured Reservoir
Authors: Maulindani Sri Feni , Marhaendrajana Taufan , Abdassah Doddy
Published: April 2023

A naturally fractured reservoir today plays a significant role in the improved worldwide oil and gas production. More than half of the resource is mostly found in this reservoir. In this reservoir, there are two porous media: the matrix, which serves as the fluid source, and the fractures, as the fluid network that flow to the wellbore. Many authors have done the researches of works in order to modelling this reservoir. There are two model are done in this study, such as Warren and Root model, where fluid flow mechanism matrix to fractures is known as pseudosteady-state flow and Kazemi-Gilman model is known as transient interporosity flow.

Reservoir Engineers generally utilize pressure transient analysis to determine this reservoir's characteristics. The purpose of this study is to assess whether it is feasible to incorporate the parameters from the Pressure Transient analysis using a synthesis simulation model. It also aims to observe how reservoir parameters behave in relation to the characteristics of naturally fractured reservoirs by utilizing various values for porosity, permeability, and fracture spacing.
THE CALCULATION OF EVAPORATION LOSS IN TANK Y AND TANK Z AT PT X PRABUMULIH
Authors: Andalucia Sefilra
Published: April 2023

Calculation Evaporation Loss (Fixed Roof Tank) on Tank Y and Tank Z in SA Field, PT X Prabumulih. The calculation of  evaporation  loss consists of breathing loss  and working loss.  By calculating breathing  loss and working loss, it can be known the  losses that occur in a tank. The most significant parameters in influencing breathing loss are  temperature  and ullage tanks, while parameters that greatly affect working loss are true vapor pressure and trhoughput. After calculating, the total  losses  that occurred in Tank Y and Tank Z were obtained as much as 3.46 Bbl / day or 1,261.41 Bbl / year, if assumed with the  Indonesian Crude Price (ICP) price of crude oil per barrel  is currently US $ 117.62 then the loss incurred in Tank Y and Tank Z is Rp. 2,209,762,045 / year.
Investigation of experimental study of biomass performance of wood pellets, palm shells, and rice husk in vacuum pressure gasification system
Authors: Tri Setioputro Novandri , Kosim Muntar , Iman Saputra Dede
Published: April 2023

The development of biomass-based renewable energy has received extra momentum due to the petroleum/coal-based energy crisis and global warming. Vacuum suction gasification is capable of creating combustible, power-generating synthesis gas. In this vacuum suction gasification, palm shells biomass and wood pellets performed better than rice husks. The production of synthetic gas was stable. It ran for 6.5 hours straight for the ability of palm shells and wood pellets to maintain sustainable temperatures in the reactor to maintain the gasification reaction. Rice husk was not suitable for this type of gasification. It did not maintain a suitable temperature for the gasification reaction to perform well. Value of heat losses in the lining of the reactor was large, more than 2,000 watts which might be the factor that prevented the rice husk from running well. Water was sprayed onto biomass at the reactor’s input to increase its hydrogen content. Oil palm shells responded well to this treatment. It produced better syngas output sustainably. The wood pellet was not responded well to water spray. It crumbled into small pieces. Rice husk is not responded well either. Syngas produced by the reactor was burned and used to boil water. In this gasification system, palm shells and wood pellets had apparent heat values of 5.62 kW and 5.41 kW, respectively. The efficiency of palm shells and wood pellets results in performances of 29.20 percent and 29.96 percent, respectively.
Analysis of Wind Power Potential in Samiang Bay, Kotabaru, South Kalimantan
Authors: Fahrur Aslami  , Elysa Nensy Irawan  , Mohammad Muntaha  , Suyatno  , Mochamad Sahal
Published: April 2023

This research was conducted to determine the potential for wind power from the Tamiang Bay area, Kotabaru, South Kalimantan. This study uses data on the average daily wind speed in Tamiang Bay with latitude -4.058883°, longitude 116.050259° obtained from the European Center for Medium-Range Weather Forecasts (ECMWF). Based on the analysis that has been done, the average daily wind speed in Tamiang Bay is 4 m/s for a height of 10 m and 5.98 m/s for a height of 50 m. Through the assumption that using a Gamesa G114-2.5 MW wind turbine with a tower height of 80 m, in one year, the Tamiang Bay area has the potential to produce 2646.58 MWh of wind power. Thus, the Tamiang Bay area is said to be very potential for wind power development.
Effect of Quenching Medium and Tempering Temperature on Microstructure and Hardness of JIS SUP 9 Steel
Authors: Harmaji Andrie , Korda Akhmad Ardian , Ramadhan Rama , Pambudi Satrio
Published: April 2023

JIS SUP 9 steel is one of the materials commonly used for suspension components in motorized vehicles with medium carbon steel base material. It must have good hardness and toughness so that failure does not occur during operational. This research was conducted to increase the hardness of JIS SUP 9 Steel through a heat treatment and various quenching media. The heat treatment was carried out with 830-880ºC temperature with a holding time of 7 minutes then cooled using water and oil. After treatment, tempering was carried out with a holding time of 7 minutes and then cooled in room temperature. Hardness testing was carried out using Microhardness Vickers and then the microstructure was observed using an Olympus Metallurgical Microscope. The results show that heat treatment followed by rapid cooling increases the initial hardness of JIS SUP 9 (229 VHN) steel. The decrease in hardness after the tempering process will be higher with increasing tempering temperature. The results of the microstructure of the sample without heat treatment showed pearlite and ferrite phases. After heat treatment, tempered martensite, residual austenite and carbide phases appear. It can be concluded that changes in the microstructure affect the hardness of JIS SUP 9 steel.
Post-pandemic face-to-face learning: Perspectives from physical education teachers
Authors: Kurniawan Wahyu Ragil , Hartono Mugiyo , Wijayanti Dwi Gansar Santi
Published: April 2023

Returning to the face-to-face learning system for physical education, the researchers got several responses and responses from the stakeholders, one of which was the teacher. The purpose of this study was to determine the perceptions of physical education teachers in carrying out face-to-face learning activities in the post-pandemic. The method used is descriptive quantitative research. Data collection was carried out using a list of main questions that were used to guide this research, one of which was, "How do teachers respond to the return of the face-to-face system after the pandemic, which requires students to return to school to attend physical education directly?" The data analysis technique used is data reduction, data presentation, and drawing conclusions. The results of this study found one point that represents the response of teachers' perceptions about the advantages and disadvantages of learning activities from their point of view in conceptualizing the offline physical education learning approach by paying attention to identical prevention patterns in the post-pandemic period. The conclusions of this study indicate that teachers have a variety of views that contain elements of strengths and weaknesses in carrying out physical education learning activities with a face-to-face system after spending a long time during the pandemic using an online system. Next, the researcher's suggestion for further research is that a special study can be carried out on how to design a learning approach that is relevant to the post-pandemic conditions of physical education in elementary schools.
An Analysis of Economic Consequences of Forest Fires in the Sakha Republic (Yakutia)
Authors: СМОЛЬНИКОВ К.А. , ЧЕРНЯК Р.С. , НОГОВИЦЫН Р.Р.
Published: April 2023

Настоящая статья посвящена раскрытию экономических последствий лесных пожаров в Республике Саха (Якутия) в течении двух пожароопасных периодов. Определены зоны контроля лесных пожаров в республике, выявлены причины возгораний, проанализированы экономические последствия лесных пожаров, рассмотрены меры профилактики для их предотвращения. Информационной базой исследования послужила статистическая обработка данных о лесных пожарах. Подсчитан экономический ущерб, составлена карта пожаров в улусах республики. Отмечено, что особо пострадавшие улусы расположены в Центрально-Якутской лесопожарной области с равнинным рельефом и характеризующуюся наличием светлохвойных лесов сухих местопроизрастаний, обладающих повышенной пожароопасностью. Выявлено отсутствие единой методики определения ущерба, причиняемого лесными пожарами. Показана прямая зависимость лесных пожаров от эффективности противопожарных мероприятий. Полученные результаты могут быть использованы в системе среднего образования при изучении предмета «Экономика», так как экономическое образование является необходимым фактором для определения связей между различными процессами и их последствиями, что ведет к формированию адекватного отношения человека к обществу.

The article studies the economic consequences of forest fires in Yakutia during two fire-hazardous periods. Forest fire control zones in the republic were identified, the causes of fires were revealed, the economic consequences of forest fires were analyzed, and preventive measures for their prevention were considered. The statistical processing of the data on forest fires served as an information base. The economic damage was calculated, a map of fires in the districts of the republic was compiled. It was established that the particularly affected districts are located in the Central Yakutia area with a flat relief and characterized by the presence of light coniferous forests of dry areas with increased fire hazard. The absence of a unified methodology for determining the damage caused by forest fires was revealed. The direct dependence of forest fires on the effectiveness of fire-fighting measures ws shown. The obtained results can be used at schools for teaching Economics, as economic education is a necessary factor for the formation of an adequate attitude of a person to the society.
Understanding the AIE phenomenon of nonconjugated rhodamine derivatives through a new viewpoint of symmetry breaking
Authors: Yang Lin-Lin , Wang Haoran , Zhang Jianyu , Li Qiyao , Chen Jie-Ying , Tang A-Ling , Lam Jacky W. Y. , Zhao Zheng , Yang Song , Tang Ben Zhong
Published: April 2023

Solid-state emissive materials are of great importance due to their wide applications in the field of bioimaging and optoelectronic devices. The concept of aggregation-induced emission (AIE) provides a reliable strategy to afford solid-state emissive luminogens with the guidance of restriction of intramolecular motion (RIM) mechanism. Traditional AIE luminogens (AIEgens) exhibit enhanced emission intensity under increased viscosity or decreased temperature, attributed to the RIM mechanism. However, some luminogens were found without the classic viscosity or temperature effect, but still display AIE feature. In this work, we synthesized a series of cross-shaped and closed-form rhodamine-based unorthodox AIEgens. Their abnormal emission behavior in increased viscosity and cooling experiments suggested that their strong solid-state luminescence (up to 72.7%) was not ascribed to the conventional RIM working mechanism. Through a systematical investigation including single-crystal structural analysis, optical property study and theoretical calculations, we proposed that aggregation-induced symmetry breaking (AISB) may induce intramolecular charge transfer and act as a general principle to dominate the unique aggregate-state emission behavior of the nonconjugated rhodamine derivatives. More importantly, AISB not only provides a feasible approach for the design of unique rhodamine-based AIEgens, but also helps us deeply understand the change of luminescent behavior of materials upon aggregation with a wide perspective.
Mechanism of Stoichiometrically Governed Titanium Oxide Brownian Tree Formation on Stepped Au(111)
Authors: Lavroff Robert H. , Wang Jason , White Michael G. , Sautet Philippe , Alexandrova Anastassia N.
Published: April 2023

Previously observed formation of sub-stoichiometric titanium oxide dendritic structures across terraces of Au(111) are computationally studied and shown to follow the classical fractal formation mechanism of diffusion limited aggregation (DLA). Globally optimized gas-phase oxide cluster structures were sampled in a variety of landing formations on gold surfaces and shown to favor isomers driving polymerization to Brownian tree fractal structures. Mobility of Ti3O5 monomers is shown to be extremely high, with diffusion barriers of 0.21 eV or less. Through bonding stabilization, polymerization of these monomers is energetically favorable and irreversible on the 111 terrace, but geometrically impossible to propagate along the step edge. Simulated STM images show strong similarity to experiment. By contrast, observation of Ti3O6 aggregating as wires along step edges is explained by affinity of oxygen to step edges and statistical arguments for aggregation entropy at the step, in addition to low barriers for monomer diffusion and polymerization.
Early stage growth process of dinaphtho[2, 3-b:2', 3'-f]thieno[3, 2-b]thiophene (DNTT) thin film
Authors: HIROSHIBA Nobuya , Kawano Yuta , Ongko Richard , Matsubara Ryosuke , Kubono Atsushi , Kojima Hirotaka , Koike Kazuto
Published: April 2023

Early stage growth process of Dinaphtho[2, 3-b:2', 3'-f]thieno[3, 2-b]thiophenes (DNTTs) thin film was investigated using grazing incidence X-ray diffraction (GIXD) and surface morphology analysis using atomic force microscopy (AFM). The thin film growth conditions were controlled by the slow deposition method. The vertical orientation of DNTT was confirmed from the first layer growth by GIXD. The morphologies of first layer grains were universal in the growth rate range of 0.155 ML/min - 0.017 ML/min. In addition, the dependence of the nuclei density on the deposition flow rate indicates that the number of molecules required for nucleation is 2 molecules (dimers). This result indicates that fewer molecules are sufficient for nucleation in the case of DNTT compared to the pentacene thin film growth on SiO2.
Association of Access to Family Planning Information and Unwanted Pregnancy
Authors: Sihite Triani Maulana , Simbolon Demsa , Ismiati Ismiati
Published: April 2023

Unwanted Pregnancy (UP) is a condition in which a partner or the opposite sex does not want a pregnancy or birth between partners. The incidence of Unwanted Pregnancy in Indonesia is still high (17.5%). Unwanted Pregnancy has an impact on the health of the mother, infant, and family problems. The study aimed to determine the relationship between access to information about family planning and Unwanted Pregnancy in Indonesia. This type of research is quantitative with a cross-sectional design using Program Performance and Accountability Survey 2019 secondary data. The independent variable is access to information about family planning with the dependent variable being Unwanted Pregnancy. Confounding variables are predisposing factors (age, education, occupation, parity, and marital status), enabling factors (area of ​​residence, socioeconomic status, family planning needs), and reinforcing factors (support from health workers). The sample of this study were women of childbearing age 15-49 years who were recorded as pregnant. Multivariate analysis using multivariate logistic regression. Results of this study show that there is a significant relationship between access to family planning information and UP in Indonesia, after controlling for confounding variables (p-value 0.001) (OR=1.964;95%CI:1.334-2.893). Health promotion efforts are needed through communication, information, and health education regarding the importance of access to information about family planning and UP so that it can influence the behavior of women of childbearing age in Indonesia.
EVALUASI PENERAPAN KONSEP BIOKLIMATIK PADA RAD+AR HQ
Authors: Tumpak Ahimsa Sirait Benno , Gunawan Yenny
Published: April 2023

Abstrak - Arsitektur bioklimatik sudah ada sejak abad ke 20 namun perkembangannya di Indonesia baru belakangan ini terlihat. Arsitektur di Indonesia seringkali meniru atau menjiplak arsitektur di luar negeri dengan iklim berbeda yang menciptakan bangunan yang tidak nyaman bagi penggunanya dan juga boros penggunaan energinya. Letak Indonesia di iklim tropis masih belum banyak dikembangkan penerapannya dalam arsitektur yang banyak digunakan.

Penelitian dimulai dengan mengkaji konsep bioklimatik di Jakarta dan bangunan RAD+ar HQ sebagai objek studi dengan konsep arsitektur bioklimatik. Selanjutnya dilakukan pengambilan data fisik, data pengukuran kondisi lingkungan, dan data wawancara persepsi untuk melakukan evaluasi terhadap bagaimana penerapan konsep bioklimatik pada bangunan RAD+ar HQ dan bagaimana persepsi pengguna bangunan terhadap kenyamanan termal dan visual pada bangunan RAD+ar HQ/.

Dari penelitian tersebut, didapatkan bahwa penerapan konsep bioklimatik pada bangunan RAD+ar HQ belum sepenuhnya karena konsep awal yang berbeda serta adanya modifikasi karena keterbatasan dari kondisi pandemi, yang mementingkan sirkulasi antar pengguna di bangunan. Pengguna bangunan RAD+ar HQ sebagian besar sudah merasa nyaman secara termal dan visualnya namun belum semua pengguna merasa nyaman secara termal, hal ini dapat diakibatkan dari kondisi termal yang mayoritas ruangannya berada diluar standar kenyamanan termal. Bangunan ini sudah menerapkan arsitektur bioklimatik walaupun belum sepenuhnya diterapkan 

 

Kata Kunci: arsitektur bioklimatik, arsitektur tropis, RAD+ar Headquarters
Exploring academic resilience and scientific epistemological views among undergraduate students
Authors: Anjum Ahmed , Roman Shafi Shawl
Published: April 2023

Academic resilience can be defined as the capability of students to solve their problems in times of pressure, anxiety, stress, and other setbacks. It is imperative to have insight into academic resilience as students are involved in various obstacles in the field of education. Scientific epistemological views reflect the individual's beliefs pertaining to science, its qualities, methodologies, and the individual's acquisition process. The study was undertaken to determine the relationship between academic resilience and scientific epistemological views among undergraduate students. A sample of 200 undergraduate students, comprising 72 males and 128 females, was selected through simple random sampling from different faculties of Aligarh Muslim University. Two tools were used for data collection, Academic Resilience Scale (2010) and the Scientific Epistemological Views Scale (2005). For data analysis, Pearson's coefficient of correlation and the t-test were calculated. The results revealed that there exists no relationship between the two variables. In the case of academic resilience, a significant difference was found between the male and female groups, with female students coming out as more resilient than male students. However, in scientific epistemological views, no significant difference between male and female groups was found.
Dealing with learning difficulties of students: A challenge for teachers
Authors: B. Prema Latha , S. Praveen Kumar
Published: April 2023

This article focuses on creating awareness about learning difficulties among teachers, educational administrators, and all those involved in the field of education. Children with learning difficulties are found across all ages, socio-economic levels, and races. Individuals with learning difficulties find it very difficult to learn new skills. Most of them are excluded from the education process due to their presumed inability to learn. Learning to read and write is more of an expectation than an exception in today's society. However, achieving competency with reading and writing skills are challenging for many students, especially for those with learning difficulties who often lack foundation in reading and writing. Teachers who are involved in this area should continue to invest efforts to seek more knowledge about the nature and interventions of learning difficulties to enhance academic success for children with learning problems. Teaching reading and writing is also challenging for many teachers, as they often experience many students who fail to acquire the basic skills. It is a necessity to acquire the basic foundations of academic skills. However, it has been observed over time that individuals with learning difficulties of all ages and types are not able to learn to some degree. Because of their reduced ability to read and write, they find it very difficult to keep up with their academic performance. Hence they need constant support in reading and writing skills. In this article, the authors explain some of the instructional strategies that a regular teacher can use in the classroom to help academically challenged learners. Some joyful activities to make learning easy and more interesting for the students are also emphasized.