bluuebunny/crossref_metadata_2025 huggingface dataset:
FLEXIBILITY STUDY OF A PIPELINE SYSTEM IN FIBER-REINFORCED POLYMER
Authors:   Exploration-Production Department, Faculty of Oil, Gas and Renewable Energies, University of Kinshasa, D.R. Congo; Petroleum Engineering Department, Polytechnic Institute of the Advanced Sciences of Sfax, Tunisia; email: nehemiebikayi@gmail.com, Bikayi Tshiani Néhémie , Diangitukulu Ndimba Samuel ,   Exploration-Production Department, Faculty of Oil, Gas and Renewable Energies, University of Kinshasa, D.R. Congo, Meftah Wassim ,   Petroleum Engineering Department, Polytechnic Institute of the Advanced Sciences of Sfax, Tunisia, Opuluku Rachidi ,   Exploration-Production Department, Faculty of Oil, Gas and Renewable Energies, University of Kinshasa, D.R. Congo, Kimpanga Patrick ,   Exploration-Production Department, Faculty of Oil, Gas and Renewable Energies, University of Kinshasa, D.R. Congo
Published: August 2024

This study evaluates the flexibility of a fiber-reinforced polymer (FRP) pipeline system, focusing on its ability to withstand various loads and stresses while maintaining structural integrity. Key aspects include analyzing FRP material properties, assessing pipe geometry, evaluating external and internal loads, and performing a flexibility analysis using CAESAR II software. The initial findings indicated that the stress levels exceeded permissible limits, necessitating adjustments in support positions and types. These adjustments successfully reduced stress levels to acceptable thresholds, ensuring reliable system performance. This study highlights the importance of meticulous design and continuous optimization to guarantee the safety and durability of FRP pipeline installations.
ASPECTOS DO ACESSO À JUSTIÇA NO ESTADO DEMOCRÁTICO DE DIREITO
Authors: Pedrassi Cláudio Augusto , Pedrassi Vitória Regina Faria
Published: August 2024

O presente artigo trata do acesso à justiça no âmbito de um Estado Democrático de Direito, em virtude deste modelo estatal apresentar como cerne a dignidade da pessoa humana, com a prevalência da legalidade e da soberania popular, de modo que para que se configure os direitos fundamentais de todos e qualquer indivíduo devem estar positivados e assegurados de forma efetiva. Neste diapasão, o acesso à justiça se caracteriza como um direito essencial do indivíduo, que garante a efetivação de todos os demais direitos, de forma que quando inobservado, viola os preceitos inerentes de um Estado Democrático de Direito. Assim, a garantia dos direitos fundamentais não se restringe a positivação destes direitos e mero acesso ao Judiciário, mas envolve a resolução adequada de disputas de forma oportuna e justa, com a garantia dos direitos constitucionais. Diante disso, o artigo também examina o esforço legislativo pela busca da concretização deste direito para a população brasileira, a fim de que seja possível caracterizar o Brasil como um efetivo Estado Democrático de Direito, o que ainda se encontra em processo com significativos obstáculos.
UMA JORNADA DE INTEGRAÇÃO ENTRE ENSINO E COMUNIDADE NA FORMAÇÃO ACADÊMICA: RELATO DE EXPERIÊNCIA
Authors: Santos Francisco José Sousa , Costa Maria Fernanda Lacerda , Machado Vanessa Medeiros , Sousa Felype Ferreira , Pereira Eduardo Santos
Published: August 2024

Esse artigo apresenta um relato de experiências da prática da disciplina de Integração Ensino-Serviço Comunidade I (IESC) na Unidade de Saúde da Família II Francisco Paes de Lira, localizada na cidade de Redenção-PA. As atividades foram realizadas no primeiro semestre de 2024, com um grupo de estudantes do primeiro período do curso de medicina da Faculdade de Ensino Superior da Amazônia Reunida (FESAR), por meio de visitas feitas quinzenalmente em forma de revezamento entre acompanhar o funcionamento da unidade e participar de visitas domiciliares com os agentes comunitários de saúde (ACS), que visavam integrar os alunos à realidade da comunidade do setor serrinha, sob orientação dos agentes comunitários do setor serrinha. Diante dessa experiência multidisciplinar vivenciada, foi identificado um contexto no qual os habitantes da comunidade estavam expostos a situações de vulnerabilidade física e social como falta de saneamento básico, moradias irregulares e dificuldades de acesso aos serviços básicos de saúde, tornando o espaço carente em infraestrutura básica. O método de aprendizagem utilizado teve como intuito relacionar teoria e prática somada à vivência em campo, permitindo que os alunos desenvolvessem habilidades sensíveis e empáticas, fundamentais a futura relação médico-paciente.
Long-term changes in the dependence of NmF2 on solar flux at Juliusruh
Authors: Tan Jun Rios Maria Gloria , Borries Claudia , Liu Huixin , Mielich Jens
Published: August 2024

Abstract. Understanding the ionospheric dependence on solar activity is crucial for the comprehension of the upper atmosphere. The response of the ionosphere to solar EUV flux has been previously considered stable. Subsequent studies have revealed long-term changes that are not yet fully understood. This work evaluates the stability of the NmF2 dependence on solar EUV indices throughout different solar cycles. Hourly values of the peak electron density of the ionospheric F2-layer (NmF2) from Juliusruh station (54.6° N, 13.4° E) are analysed between 1957 and 2023. Geomagnetic perturbations are removed. Third-degree polynomial fit models are dependent on different solar EUV proxies (MgII, F30, and F10.7) and generated separately for each solar cycle and season separately. The saturation effect is visible in our data and starts at lower F30 values in the ascending phase than in the descending phase. A well-pronounced local time dependence in January with the R2 value being maximum around noon hours has been observed. The correlation is highest for F30 and MgII especially during winter noon conditions, supporting recent studies that they are the best solar flux proxies for describing the NmF2 dependence at all LT hours. Most importantly, the response of NmF2 to solar flux shows a clear long-term change as the slope of the model curves decreases with time for each solar cycle. Between SC20 and SC24, the observed decrease is consistently higher than 16 %, reaching 24 % at 90 sfu which means a decal reduction of 3–4.4 % between 1954 and 2019.
Charging, Aggregation, and Electrostatic Dispersion of Radioactive and Nonradioactive Particles in the Atmosphere
Authors: Kim Yong-Ha , Yiacoumi Sotira , Tsouris Costas
Published: August 2024

Abstract. Electrostatic dispersion can significantly impact the microphysical behavior of charged particles and ions until reaching zero space charge. However, although radioactive particles can be strongly charged in air, the influence of electrostatic dispersion has been neglected in understanding their behavior. This study is aimed at investigating time-evolution of the charge and size distributions of radioactive and nonradioactive particles in air and developing simple approaches for applications. Involving charging, aggregation, and electrostatic dispersion, a comprehensive population balance model (PBM) has been developed to examine particle charge/size distribution dynamics. It is shown that, compared to nonradioactive particles, the charge and size distributions of radioactive particles may evolve differently with time because radioactivity and electrostatic dispersion can significantly affect the charging and aggregation kinetics of the particles. It is found that, after the Fukushima accident, background aerosols in the pathway of radioactive plumes might be highly charged due to ionizing radiation, suggesting that radiation fields may strongly influence in-situ measurements of charged atmospheric particles. The comprehensive PBM is simplified, and then the verification and application of the simplified PBMs are discussed. This study provides useful insight into how radioactivity can affect the dynamic behavior of particles in atmospheric systems including radiation sources.
Closing the phenotyping gap with non-invasive belowground field phenotyping
Authors: Blanchy Guillaume , Deroo Waldo , De Swaef Tom , Lootens Peter , Quataert Paul , Roldán-Ruíz Isabel , Garré Sarah
Published: August 2024

Abstract. Breeding climate-robust crops is one of the needed pathways for adaptation to the changing climate. To speed up the breeding process, it is important to understand how plants react to extreme weather events such as drought or waterlogging in their production environment, i.e. under field conditions in real soils. Whereas a number of techniques exist for above-ground field phenotyping, simultaneous non-invasive belowground phenotyping remains difficult. In this paper, we present the first dataset of the new HYDRAS open access field phenotyping infrastructure, bringing electrical resistivity tomography, alongside drone imagery and environmental monitoring, to a technology readiness level closer to what breeders and researchers need. This paper investigates whether electrical resistivity tomography (ERT) provides sufficient precision and accuracy to distinguish between belowground plant traits of different genotypes of the same crop species. The proof-of-concept experiment was conducted in 2023 with three distinct soybean genotypes known for their contrasting reactions to drought stress. We illustrate how this new infrastructure addresses the issues of depth resolution, automated data processing, and phenotyping indicator extraction. The work shows that electrical resistivity tomography is ready to complement drone-based field phenotyping techniques to accomplish whole plant high-throughput field phenotyping.
What controls planktic foraminiferal calcification?
Authors: Barrett Ruby , de Vries Joost , Schmidt Daniela N.
Published: August 2024

Abstract. Planktic foraminifera are key producers of pelagic carbonate, and their shell weight is suggested to represent the environment in which they calcify. However, there is debate about the use of size-normalised weight (SNW) as a proxy, as some authors invoke a carbonate system control on calcification (and by extension SNW as a pCO2 proxy), while others suggest that species optimum conditions, nutrient concentration, or temperature drive shell weight. To better understand its use as a proxy, we investigate what drives SNW and whether discrepancies in the proposed control on weight is due to differing data collection methodologies and/or regionally different drivers. We integrate new and published SNW data with environmental hindcast data extracted from the CMIP6 modelling suite. Using Bayesian regression modelling, we find that the environment alone cannot explain the variability in SNW across species. Although physiology likely modulates the response to the environment, we find little evidence of a unifying driver at the ecogroup-level. Instead, we identify species-specific responses associated with drivers including (but not limited to) the carbonate system, which are likely different between ocean basins. We hypothesise that this is partly influenced by cryptic species and regional phenotypic plasticity in not well understood changes to shell weight, such as the thickness of calcite deposited during some species’ reproductive phase. Consequently, which species to use as a pCO2 proxy or whether multiple species should be used in parallel to reduce uncertainty should be carefully considered. We strongly encourage the regional testing and calibration of pCO2 – SNW relationships.
A high-resolution pan-Arctic meltwater discharge dataset from 1950 to 2021
Authors: Igneczi Adam , Bamber Jonathan Louis
Published: August 2024

Abstract. Arctic air temperatures have increased about four times faster than the global average since about 1980. Consequently the Greenland Ice Sheet has lost about twice as much ice as the Antarctic Ice Sheet between 2003 and 2019, and mass loss from glaciers and ice caps is also dominated by those that lie in the Arctic. Thus, Arctic land ice loss is currently a major contributor to global sea level rise. This increasing freshwater flux into the Arctic and North Atlantic oceans, will also impact physical, chemical and biological processes across a range of domains and spatiotemporal scales. Although, meltwater discharge data at Arctic coastlines are available from two existing datasets, these are limited by their spatial resolution and/or coverage. Here, we improve upon previous work and provide a high-resolution coastal meltwater discharge data product that covers all Arctic regions, where land ice is present, i.e. the Canadian Arctic Archipelago, Greenland, Iceland, Svalbard, Russian Arctic Islands. Coastal meltwater discharge data were derived from Modèle Atmosphérique Régional daily ice and land runoff products between 1950 and 2021, which we statistically downscaled from their original ~6 km resolution to 250 m. The complete data processing algorithm, including downscaling, is fully documented and relies on open-source software. The coastal discharge database is disseminated in easily accessible and storage efficient netCDF files.
Implementation and assessment of a model including mixotrophs and the carbonate cycle (Eco3M_MIX-CarbOx v1.0) in a highly dynamic Mediterranean coastal environment (Bay of Marseille, France) – Part 2: Towards a better representation of total alkalinity when modeling the carbonate system and air–sea CO2 fluxes
Authors: Barré Lucille , Diaz Frédéric , Wagener Thibaut , Mazoyer Camille , Yohia Christophe , Pinazo Christel
Published: August 2024

Abstract. The Bay of Marseille (BoM), located in the northwestern Mediterranean Sea, is affected by various hydrodynamic processes (e.g., Rhône River intrusion and upwelling events) that result in a highly complex local carbonate system. In any complex environment, the use of models is advantageous since it allows us to identify the different environmental forcings, thereby facilitating a better understanding. By combining approaches from two biogeochemical ocean models and improving the formulation of total alkalinity, we develop a more realistic representation of the carbonate system variables at high temporal resolution, which enables us to study air–sea CO2 fluxes and seawater pCO2 variations more reliably. We apply this new formulation to two particular scenarios that are typical for the BoM: (i) summer upwelling and (ii) Rhône River intrusion events. In both scenarios, our model was able to correctly reproduce the observed patterns of pCO2 variability. Summer upwelling events are typically associated with a pCO2 decrease that mainly results from decreasing near-surface temperatures. Furthermore, Rhône River intrusion events are typically associated with a pCO2 decrease, although, in this case, the pCO2 decrease results from a decrease in salinity and an overall increase in total alkalinity. While we were able to correctly represent the daily range of air–sea CO2 fluxes, the present configuration of Eco3M_MIX-CarbOx does not allow us to correctly reproduce the annual cycle of air–sea CO2 fluxes observed in the area. This pattern directly impacts our estimates of the overall yearly air–sea CO2 flux as, even if the model clearly identifies the bay as a CO2 sink, its magnitude was underestimated, which may be an indication of the limitations inherent in dimensionless models for representing air–sea CO2 fluxes.
A deep learning model for real-time forecasting of 2-D river flood inundation maps
Authors: Pianforini Matteo , Dazzi Susanna , Pilzer Andrea , Vacondio Renato
Published: August 2024

Abstract. Floods are among the most hazardous natural disasters worldwide. Accurate and rapid flood predictions are critical for effective early warning systems and flood management strategies. The high computational cost of hydrodynamic models often limits their application in real-time flood simulations. Conversely, data-driven models are gaining attention due to their high computational efficiency. In this study, we aim at assessing the effectiveness of transformer-based models for forecasting the spatiotemporal evolution of fluvial floods in real-time. To this end, the transformer-based data-driven model FloodSformer (FS) has been adapted to predict river flood inundations with negligible computational time. The FS model leverages an autoencoder framework to analyze and reduce the dimensionality of spatial information in input water depth maps, while a transformer architecture captures spatiotemporal correlations between inundation maps and inflow discharges using a cross-attention mechanism. The trained model can predict long-lasting events using an autoregressive procedure. The model's performance was evaluated in two case studies: an urban flash flood scenario at the laboratory scale and a river flood scenario along a segment of the Po River (Italy). Datasets were numerically generated using a two-dimensional hydrodynamic model. Special attention was given to analyzing how the accuracy of predictions is influenced by the type and severity of flood events used to create the training dataset. The results show that prediction errors generally align with the uncertainty observed in physically based models, and that larger and more diverse training datasets help improving the model's accuracy. Additionally, the computational time of the real-time forecasting procedure is negligible compared to the physical time of the simulated event. The performance of the FS model was also benchmarked against a state-of-the-art convolutional neural network architecture and showed better accuracy. These findings highlight the potential of transformer-based models in enhancing flood prediction accuracy and responsiveness, contributing to improve flood management and resilience.
Community-led disaster management: Insights from flood-affected communities across South-East Queensland
Authors: Taylor Monica , Muir Laurelle , Crawford Fiona , Davison Oscar , Maguire Rowena , Lewis Bridget
Published: August 2024

This briefing paper presents some findings from a QUT Centre for Justice study into community-led disaster preparedness, response, and recovery arising from the 2022 rainfall and flood event in South-East Queensland. The overarching aim of the research is to understand how place-based Community Service Organisations (CSOs) in disaster-impacted areas contribute to disaster management. This paper shares findings from qualitative interviews in answer to two of the study’s research questions. First, how do CSOs perceive their role in disaster preparation, response, and recovery? And second, what do they consider necessary for a community to feel prepared? This study regards CSOs and their clients as falling within the definition of a place-based ‘community’, noting that this term, along with others used in this briefing paper, are contested in the literature (Titz et al., 2018).
Covid-19 Döneminde Hemşirelerin Sosyo-Psikolojik Desteğe İlişkin Bakış Açıları
Authors: GÜL Dilek
Published: August 2024

Within the scope of this research, the problematic of whether the health policies and contents of nurses as health workers are structured or not regarding the social-psychological support of nurses during the covid-19 period is emphasized. It is aimed to reveal the analysis of the functioning dynamics of the structures and mechanisms that produce the differences in nurses' perspectives through a grounded theoretical data analysis process based on a critical realist methodology. Accordingly, one of the basic assumptions of the research is based on the necessity of health policies and policies for health workers that will ensure that nurses are supported psycho-socially in accordance with changing conditions. On the axis of the research, it is aimed to examine the thoughts of nurses about receiving social-psychological support during the covid-19 period. In this context, nurses' opinions on whether they regularly participate in individual or group counseling during the epidemic and whether they consider the content of these supports sufficient were evaluated as a public health problem in terms of general health policies. The research was carried out within the framework of in-depth interviews as a data collection technique suitable for qualitative data analysis within the framework of the grounded theory design. The obtained data were analyzed in a critical realist methodological framework in accordance with the theory design based on the MAXQDA program. With a reasoning strategy based on the way individuals explain, the data were recontextualized and described, and health policies for the existing socio-cultural-economic-social structure components were associated with a reasoning strategy based on retroduction. Among the most important findings of the study, the emphasis of most of the participants on the need for psychological support draws attention. However, despite the participants' emphasis on the necessity of receiving social-psychological support, it was observed that they stated that they did not receive such support during the pandemic process. In addition, the participants emphasized the necessity of individual-group counseling. While receiving psycho-social support should be a normalized health parameter, it has been evaluated that even in terms of this normalization, there are significant gaps in terms of health policies, especially in terms of health workers, especially in extraordinary periods such as pandemics. Keywords: Psycho-Social Support, Nursing, Health Policies, Public Health.
The Moderating Role of Institutional Quality in the Relationship between Foreign Capital Inflows and Stock Market Development: A Panel Data Analysis
Authors: Hasan Muhammad Amin , Siddiqui Ammar Ahmed , Arsalan Muhammad , Sajid Ali
Published: August 2024

The study examines the impact of foreign capital inflows (FCI) on stock market development (SMD), with a specific focus on the moderating role of institutional quality (IQ).  The study uses a panel dataset of 28 emerging economies for the period of 1998 to 2022. The findings reveal that both international remittances (REM) and foreign portfolio investment (FPI) have a significant positive impact on SMD. These findings imply that REM inflows enhance the availability of financial resources in the economy, promoting stock market growth and stability. Similarly, FPI increases market liquidity and fills the saving-investment gap in the host country, thereby increasing SMD. However, the results show that foreign direct investment (FDI) has a significant negative impact on SMD. This finding implies that FDI could negatively affect SMD in the host country due to the diversion of investments from the stock market to other business ventures, profit repatriation, and crowding-out effects on domestic investment by creating strong competition in the input market, making it difficult for listed domestic firms to operate. Moreover, the study reveals two unique and interesting findings. First, official development assistance (ODA) has a significant negative impact on SMD, suggesting that ODA reduces SMD due to the misallocation of resources due to aid conditions and economic instability, and the crowding-out effect on private investments. Second, IQ positively moderates the relationship between all forms of FCI and SMD in the sampled countries, implying that host countries with a good institutional framework and high IQ tend to experience high SMD.
Does Greylisting Affect the Workers’ Remittances to their Home Country? A Case Study of Pakistan
Authors: Butt Adeel , Iqbal Zahid
Published: August 2024

Inward forward remittances are an important source of foreign reserves for Pakistan and they are also conducive in maintaining the current account deficit at a manageable level. In this article, the author has attempted to gauge the impact of FATF grey listing on the inward foreign remittances of Pakistani workers employed abroad. The time series data spanning from 2001-2022 has been used to estimate these effects using the ARDL time series estimation method and bounds testing technique for cointegration. It has been estimated that no statistically significant effect of greylisting on workers’ remittances exists either in the short or in the long run. This is in tandem with various studies that have found that FATF listing does not necessarily have a conclusive or negative effect on the economic variable(s). However, the estimates suggest that there exists a statistically significant relationship between the exchange rates and the workers’ migration stocks in the short and the long run. The result(s) of the study adds to the existing literature because to the author's knowledge, no prior work has been done regarding the impact of greylisting on the workers’ remittances sent to the home country and this effect has not been studied individually in the case of a developing country like Pakistan. Furthermore, the available literature suggests that in general, not much work has been done to estimate the impact of greylisting or blacklisting on the country’s economy; the results available in the existing literature are also mixed; where some studies report unconclusive impacts whereas other studies report a negative impact of greylisting on the economic aspects they analysed.
Desempolvando: un balance crítico de la discusión entre Nino y Carrió sobre el poder constituyente
Authors: Baquerizo Jorge
Published: August 2024

El presente trabajo tiene como objetivo principal examinar y debatir las ideas de Carlos S. Nino sobre el concepto de “poder constituyente”, generadas a partir de su discusión de una excelente monografía que Genaro Carrió escribió sobre el mismo tema. En este sentido, intentaré mostrar que los planteamientos de Nino también son susceptibles de algunas críticas (y no necesariamente orientadas en favor del enfoque inicial de Carrió) lo que, en cualquier caso, no le quita a Nino el mérito de haber contribuido con importantes reflexiones sobre esta materia. Este balance crítico, en el que se analizan varios aspectos de orden conceptual recurrentemente involucrados en los momentos constituyentes latinoamericanos, se efectúa a 30 años del fallecimiento de Nino, a 40 años de su discusión con Carrió, a 50 años de la publicación de la (ya clásica) monografía de Carrió y a 80 años del natalicio del primero.
Desmontar el abismo entre Sujeto y Naturaleza. Sobre el extravío desnaturalizante de la subjetividad
Authors: Drivet Leandro
Published: August 2024

En este trabajo reflexionamos sobre algunos presupuestos subyacentes al concepto de sujeto que informa el derecho moderno, categoría que, siguiendo a Valeria Berros, juzgamos en crisis. Una crítica a la interpretación que Philippe Descola hace del Museo de Ciencias Naturales de La Plata y la noción freudiana de la herida biológica del narcisismo humano nos conducen a señalar los rasgos antimaterialistas de la metafísica de la subjetividad moderna, que se prolongan hasta nuestros días. Luego, concentrándonos en la noción de “dignidad humana”, analizamos la desmentida de la naturaleza que acarrea la concepción del sujeto en el idealismo alemán. Por último, proponemos pensar en modos de reconocimiento de los derechos de la naturaleza más allá de la categoría de sujeto, aunque sin abandonar su potencial actual ni renunciar al proyecto de su ampliación, a partir de la idea de respeto y de una ética comunicativa ampliada.
Introducción a un debate por los sujetos de derecho y nuevos otros, en tanto problema jurídico y filosófico
Authors: Galanzino Marianela
Published: August 2024

Este breve trabajo intentará introducir una conversación esgrimida en torno al texto de Valeria Berros, titulado “Cuando lo obvio deja de serlo: nuevos sujetos y otros en el derecho contemporáneo”. Partiendo de esbozar los principales argumentos que propone la autora, pasaré inmediatamente a apuntar reflexiones suscitadas por la entidad creciente que cobran algunos de los debates que colisionan en la discusión y referiré a sus repercusiones que exceden, a todas luces, el campo del derecho. Intentaré también ofrecer una narrativa que funcione a modo de paraguas argumentativo con la finalidad de esbozar el mapa de relaciones entre los elementos aportados por los comentaristas a la discusión con el texto central y, sin saberlo, entre los mismos comentaristas, Lisbôa y Drivet.
La concepción artefactualista de las normas de comportamiento: una réplica a Arriagada, Rodríguez y Godinho
Authors: Mañalich Raffo Juan Pablo
Published: August 2024

Esta réplica ofrece una respuesta a los comentarios de Arriagada, Rodríguez y Godinho, centrada en los siguientes problemas: el entendimiento de las preguntas ontológicas sobre el cual se asienta la categorización de las normas jurídicas como artefactos institucionales abstractos; la relación existente entre las normas y el lenguaje, a propósito de la reconstrucción crítica de las concepciones expresiva e hilética y de la clarificación de cómo se conectan la semántica y la pragmática; la inteligibilidad de la postulación de artefactos culturales abstractos, entendidos como entidades dependientes de actitudes intencionales, y de la categorización de las normas jurídicas como entidades de esta clase; y la compatibilidad de la caracterización ontológica de las normas de comportamiento punitivamente reforzadas como artefactos institucionales con su caracterización funcional como razones autoritativas y externas para la acción, en consideración a las implicaciones que esa doble caracterización tiene para la teoría de los sistemas de derecho penal.
KOMPARASI DIMENSI KERETA LIF MENURUT STANDAR REGULASI DAN STANDAR PABRIKAN
Authors: Mafra Ramadisu , Zulfikri  , Riduan
Published: August 2024

Abstrak: Dimensi kereta lif telah diatur setidaknya dalam lima peraturan perundang-undangan. Menurut PP No. 16 Tahun 2021, ukuran kereta lif minimum 120 x 230 cm dengan lebar minimum bukaan pintu 110 cm. Mandat ini bersifat mengikat, namun perlu dilakukan kajian komparatif terkait dimensi tersebut dengan regulasi lainnya, serta ketersediaan standar kereta lif menurut pabrikan. Penelitian ini bertujuan untuk menguji kesesuaian dimensi kereta lif tersebut dengan beberapa Permen serta SNI yang masih berlaku beserta ketersediaan menurut sembilan merek lif popular di Indonesia. Metoda komparasi dilakukan antara regulasi dan standar pabrik lif penumpang jenis MR & MRL yang menjadi sampel. Hasil penelitian; pertama, bahwa untuk memenuhi standar menurut PP No. 16 Tahun 2021, kapasitas ideal kereta lif adalah 24 penumpang dan dapat diakomodir dengan menggunakan lif Hyundai (MR & MRL), Kone (MR & MRL), Mitsubishi (MR & MRL), Sigma (MR), Toshiba (MR & MRL) dan Thyssenkrupp (MR & MRL). Kedua, bahwa PP No. 16 Tahun 2021 selaras dengan Permen PUPR No. 14/PRT/M/2017 namun tidak singkron dengan Permen PU No. 30/PRT/M/2006, Permenaker No. 6 Tahun 2017,  SNI 03-6573-2001, serta SNI 03-1746-2000.
PENURUNAN DEFECT RATIO HOUSING PANEL MENGGUNAKAN METODE FAILURE MODE AND EFFECT ANALYSIS (FMEA) PADA MESIN INJECTION MOLDING DI PT XYZ
Authors: Muhammad Arif  , Hasyrani Windyatri  , Suhendra
Published: August 2024

Komponen elektronik merupakan salah satu produk yang sangat presisi, dimana jaminan kualitas harus selalu diutamakan. PT XYZ merupakan perusahaan pemasok komponen elektronik printer ternama di Indonesia. Namun saat ini defect ratio yang terjadi masih sangat tinggi pada perusahaan tersebut, khususnya pada line mesin injection molding. Rata-rata defect ratio yang terjadi pada januari hingga maret 2024 mencapai 19% pada komponen housing panel. Angka tersebut tentu saja sangat tinggi dan melebihi target yang ditetapkan perusahaan yaitu sebesar 2% disetiap line production. Penelitian ini bertujuan untuk mengaplikasikan metode FMEA (Failure Mode And Effect Analysis), agar dapat menurunkan jumlah defect ratio tersebut. Berdasarkan analisis menggunakan metode FMEA, maka perbaikan defect gas mark pada line injection molding menjadi prioritas utama, karena memiliki nilai Risk Priority Number (RPN) yang tertinggi sebesar 105 point. Setelah dilakukan improvement pada mold injection berupa penambahan gas vent dan cleaning mold, maka defect ratio pada komponen housing panel mengalami penurunan dari 19% menjadi 1.6%. Hasil tersebut tentu saja telah mencapai target yang ditetapkan perusahaan.
PENERAPAN PREVENTIVE MAINTENANCE MENGGUNAKAN METODE RELIABILITY CENTERED MAINTENANCE (RCM) UNTUK MEMINIMASI DOWNTIME MESIN CNC DI PT MTAT
Authors: Agus Setiawan  , Hasyrani Windyatri  , Suhendra
Published: August 2024

Dewasa ini mesin CNC menjadi bagian yang penting dalam industri manufaktur modern. Hal ini dikarenakan tingkat akurasi dan efisiensinya. Salah satu perusahaan yang menggunakan mesin CNC tersebut adalah PT MTAT. Saat ini masih terdapat downtime mesin CNC yang cukup tinggi dan menjadi tantangan perusahaan agar produktivitas tetap terjaga diperusahaan tersebut. Penelitian ini bertujuan untuk mengevaluasi penerapan preventive maintenance menggunakan metode Reliability Centered Maintenance (RCM) untuk mengurangi downtime dan meningkatkan kehandalan operasional mesin CNC di PT MTAT. Berdasarkan data produksi tahun 2023 lalu, menunjukkan bahwa total downtime yang terjadi adalah 88 jam dengan motor spindle memiliki kehandalan yang lebih tinggi dengan MTTF 785.232 jam dan kehandalan 37%, sementara V-Belt Turret memiliki MTTF 344.760 jam serta kehandalan 21%. Setelah penerapan preventive maintenance, maka keandalan motor spindle tersebut meningkat menjadi 55% dan V-Belt Turret menjadi 84%. Pencapaian tersebut secara umum dapat meminimasi downtime mesin CNC dari 88 jam menjadi 56 jam per tahun atau turun hingga 36%.
IMPLEMENTASI QUALITY FUNCTION DEPLOYMENT (QFD) PADA USAHA KECIL MENENGAH (UKM) ANGKRINGAN DI KOTA PALEMBANG
Authors: Maryadi Deri , Tamalika Tolu , Moulita R.A. Nurul , P.O Sianipar Togar , Suhendra
Published: August 2024

Micro, Small, and Medium Enterprises (MSMEs), such as angkringan in Palembang City, face the challenge of enhancing product and service quality to meet rising customer expectations. Addressing this challenge is essential for maintaining competitiveness and ensuring business sustainability. This study aims to apply Quality Function Deployment (QFD) as a method to help angkringan MSMEs improve customer satisfaction and enhance business agility. By employing both qualitative and quantitative approaches, QFD is integrated into the angkringan's business processes. This involves identifying customer needs, translating these needs into specific product characteristics, and aligning them with production processes. The House of Quality (HoQ) analysis identifies several key areas for improvement, such as expanding the customer parking area, increasing seating capacity, and diversifying food product offerings. Implementing these recommendations is expected to make the angkringan a preferred choice among loyal customers, even as new angkringans emerge in Palembang.
Strategi Guru PAI dalam Meningkatkan Hafalan Al-Qur’an melalui Program Tahfidz
Authors: Ayu Anggraeni Darsla Dyah , Wuryanto Edy , Ahmadi Ahmadi
Published: August 2024

Penelitian ini bertujuan untuk mengetahui strategi guru PAI dalam meningkatkan hafalan Al-Qur’an melalui program Tahfidz di SMPN 1 Sambit dan untuk mengetahui faktor pendukung dan faktor penghambat strategi guru PAI tersebut. Metode  yang digunakan dalam penelitian ini adalah pendekatan kualitatif deskriptif. Jenis penelitian yang digunakan adalah studi kasus.  Teknik pengumpulan data yang digunakan adalah wawancara, observasi, dan dokumentasi.  Data dianalisis dengan cara kondensasi data, menyajikan data dan menarik kesimpulan atau verifikasi. Hasil penelitian menunjukkan bahwa strategi guru PAI dalam meningkatkan hafalan al-Qur’an dalam  program tahfidz, yaitu dengan menerapkan strategi bimbingan yaitu dengan  metode  jama’ dan muroja’ah.
Analisis Kepustakan tentang Undang-Undang Guru dan Dosen di Lembaga Pendidikan Islam
Authors: Muhajir Ahmad
Published: August 2024

Penelitian ini bertujuan untuk mengeksplorasi peran Undang-Undang Nomor 14 Tahun 2005 tentang Guru dan Dosen dalam meningkatkan kualitas pendidikan di lembaga pendidikan Islam di Indonesia melalui studi kepustakaan. Hasil penelitian menunjukkan bahwa implementasi undang-undang ini di lembaga pendidikan Islam bervariasi. Beberapa lembaga telah berhasil mengadopsi dan menerapkannya dengan baik, sementara yang lain menghadapi berbagai kendala, termasuk keterbatasan anggaran, kurangnya pemahaman tentang undang-undang, dan variasi dalam kualitas manajemen. Di lembaga yang berhasil mengimplementasikannya, terdapat peningkatan kualitas pendidikan, motivasi dan kesejahteraan guru dan dosen, serta konsistensi dalam pengajaran. Dukungan dari pemerintah dan lembaga terkait sangat penting untuk meningkatkan implementasi undang-undang ini, melalui bantuan anggaran, program pelatihan berkelanjutan, serta sosialisasi dan edukasi tentang undang-undang. Pengembangan kapasitas manajemen di lembaga pendidikan Islam dan peningkatan kesejahteraan guru dan dosen juga menjadi faktor penting dalam mendukung keberhasilan implementasi undang-undang ini. Penelitian ini menyimpulkan bahwa Undang-Undang Guru dan Dosen memiliki potensi besar untuk meningkatkan kualitas pendidikan di lembaga pendidikan Islam, namun keberhasilannya bergantung pada berbagai faktor pendukung. Penelitian lebih lanjut diperlukan untuk mengevaluasi dampak jangka panjang dan memperluas fokus penelitian guna mendapatkan gambaran yang lebih komprehensif.
Análise Crítica dos Contextos de Influência na Implementação da Educação do Campo
Authors: Andrade Elaine de Oliveira , Viana Franciane Rodrigues , Andrade João Vitor , Santos Natália Pereira dos , Melo Raimunda Alves
Published: August 2024

Através da abordagem teórico-metodológica do ciclo de políticas proposto por Stephen J. Ball e colaboradores, este trabalho tem por objetivo analisar os contextos de influência e da produção de texto da política de Educação do Campo no Brasil, evidenciando avanços e desafios em relação à sua implementação. Desenvolveu-se uma pesquisa de abordagem qualitativa, na qual os dados foram produzidos por meio de uma pesquisa bibliográfica e da análise de documentos oficiais publicados pelo Ministério da Educação (MEC) e pelo Conselho Nacional de Educação (CNE), no período de 2001 a 2010. Os resultados apontam que a Educação do Campo vem sendo implementada a partir da participação dos movimentos sociais organizados, representando uma nova possibilidade de pensar a educação sob uma ótica que vai além da escolarização dos sujeitos, desenvolvida a partir de uma pedagogia crítica, vinculada a objetivos políticos de emancipação e de luta por justiça e igualdade social. Conclui-se que a regulamentação e institucionalização da Educação do Campo foram importantes para a sua sistematização e expansão. Contudo, é necessário avançar, estabelecendo coerência entre as proposições teórico-metodológicas apresentadas pelo Movimento da Educação do Campo e, destas, com as práticas desenvolvidas nas escolas do campo, de modo que os estudantes sejam atendidos em espaços educativos cujas propostas pedagógicas respeitem, reconheçam e valorizem as especificidades, singularidades, diversidade e tensões dos espaços camponeses.
Synthesis and Surface properties of LABSA Based detergents: An Ecofriendly Approach
Authors: Dontulwar Jeevan , Bhoyar Ruchita , Katiya Manish , Danao Ashwini
Published: August 2024

A novel ecofriendly LABSA based biodegradable detergent were synthesized and their physical properties were studied. The functional parameters of detergents performance are comparable and sometimes better than commercial sample ex. Surf excel. The formulations of detergent based on LABSA based formulated using least proportion of Sodium Tripolyphosphate, Sodium Lauryl Sulphate and acid slurry which are used in excess commercial samples leading to pollution. All these samples had shown excellent performance in terms of surface tension reduction, foam volume and viscosity.
Analytical method development and validation of prasugrel hydrochloride in bulk and its pharmaceutical formulation using the GC-MS, HPLC method
Authors: Epuru Manohar Reddy , Reddy Venna Ravinder , Narsimhulu Sravan , Nanda Kishore Pilli Veera Venkata
Published: August 2024

The present work reports rapid, sensitive and specific methods for determination of Prasugrel and its impurities by gas chromatography with mass spectrometry and high-performance liquid chromatography. The proposed method presented excellent intraday precision (% RSD < 1), and accuracy 99.23 to 100.40% and 99.48 to 100.81% for Prasugrel and 2-bromo-1-cyclopropyl-2-(2-fluorophenyl) ethanone. Further the linearity of Prasugrel correlation coefficient is >0.9994 and for bromo impurity correlation coefficient is > 0.9993. The estimated limits of detection (LOD) and quantification (LOQ) for Prasugrel, 1-bromo-1-(2-fluorophenyl) propan-2-one ranged from 0.990 to 2.586 μg/mL, and 2.999 to 7.837 μg/mL respectively. The results demonstrated that the method should be regarded as a reliable alternative to the simultaneous determination of Prasugrel and its impurities. The EI mass spectrum of Prasugrel, fluoro, bromo, methyl bromo and dibromo impurities were characterized by [M + H]+ at 409, 189, 257, 231 and 311. The methods were validated according to ICH guideline.
A mini Review on Analytical and Bioanlytical Techniques in Study of Drugs-Protein Interaction
Authors: Singh Alka , Kumar Gupta Bhaskar , Upmanyu Neeraj
Published: August 2024

The choice of a suitable analytical technique for the identification of a drug or a combination of drug mainly depends on the sample matrix complexity and the analyte concentration. The appropriate choice of an analytical method is based on properties of studied analyte such as intrinsic structure and physicochemical properties etc. The extensive development of the pharmaceutical field requires more meticulous analytical methods for the control of various diseases by means of drugs. The aim of this review article was to study the drug protein interaction with respect to various analytical methods which are applied in research and innovative field of Pharmacy. The crucial factor involved and affects the binding of drugs with Body protein is distribution as well as bioactivity of drugs in the body. In biological science and medicine, the quantitative analysis of protein in biological liquids is of great importance. The aim of the review was therefore to summarize all available examples and information about the use of current analytical applications on various categories of drugs in their dosage forms and in biological samples. The different pharmaceutical active compounds, which have been determined using different methods, are summarized for the future reference of researcher.
Impact of debt maturity and cash holding on investment decisions in Vietnamese companies
Authors: Oanh Dao Le Kieu
Published: August 2024

The study used data from 520 listed firms between 2004 and 2020 to ascertain the relationship between debt maturity, cash holding, and investment decisions in Vietnamese enterprises. The use of more conservative tactics results from the rise in agency costs. Increased cash holding encouraged businesses to employ internal resources to reduce external financing risks, favorably impacting investment decisions. The negative link between investment decisions and intangible assets indicates increased external funding costs. A high tax shield benefited the investment since it freed up financial flows for productive assets. The robustness test revealed that cash holding positively corresponds with investment decisions in consumer and technology enterprises and that technology firms are incredibly responsive to changes in debt maturity.
Intention to buy biodegradable trash bags: Research on households in Ho Chi Minh City
Authors: Sang Tang My
Published: August 2024

Most of the plastic waste polluting rivers and seas in Vietnam is single-use plastic items, of which plastic trash bags account for a large proportion. This study was conducted to determine the influence of subject norm, environmentally friendly product orientation, and knowledge about environmentally friendly products on intention to purchase biodegradable trash bags under the mediating effect of attitude toward environmentally friendly products. To achieve the research objectives, the author surveyed 449 Ho Chi Minh City households. Additionally, a structured interview questionnaire and the easy non-probability sampling approach were used to perform the survey. The data was analyzed using the SmartPLS 4.0 program. The results show that subject norm, environmentally friendly product orientation, and knowledge about environmentally friendly products all positively and significantly influence attitudes toward environmentally friendly products; attitudes toward environmentally friendly products also positively and significantly influence intentions to buy biodegradable trash bags; and attitudes toward environmentally friendly products act as a mediating factor in the relationship between subject norm, environmentally friendly product orientation, knowledge about environmentally friendly products, and intentions to purchase biodegradable trash bags. The research's consequences will are anticipated to help businesses develop sensible business plans.
Fruit Fly (Diptera: Tephritidae) Populations on Same Fruit Crops in Sumuri District, Bintuni Bay
Authors: Susiamti Widi , Panjaitan Rawati , Binur Robi
Published: August 2024

Most of the people of Sumuri District make a living as farmers, especially fruit and vegetable farmers. Local fruit plants that are commonly cultivated include bananas, papaya, mangoes, oranges, rambutan, pineapple and water guava. One of the obstacles experienced by the community is the presence of pests that attack the fruit, causing poor fruit and even crop failure. This prompted a field survey of fruit flies in community fruit plantations. The field survey was conducted in October-December 2023 in Tofoi Village, Materabu Jaya Village and Forada Village, Sumuri District, Bintuni Bay. The survey was conducted using the trapping method with Steiner model traps that have been modified from mineral water bottles and the addition of native fruit samples and Methyl Eugenol (ME) with petrogenol trademark. Traps were set for three days and then identification and collection of fruit fly samples were carried out. The results showed that the highest population of fruit flies was in pineapple (Annanas commosus), which was 738 and the least in water guava (Syzygeum aqueum), which was 324. There were nine fruit fly species identified from this study, including: Bactrocera umbrosa (Fabricus), B.carambolae (Drew and Hancock), B.dorsalis (Hendel), B.curreyi (Drew), B.curvifera (Walker), B.emittens (Walker), B.papayae (Drew and Hancock), B.tryoni (Froggatt) and Procecidochares connexa (Macquart)