bluuebunny/crossref_metadata_2025 huggingface dataset:
Geologic effects of ocean bottom currents : western North Atlantic
Authors:   Woods Hole Oceanographic Institution, Hollister Charles D. , Heezen Bruce C. ,   Woods Hole Oceanographic Institution
Published: February 2025

Bottom photographs, sediment cores and high resolution echograms from the Atlantic continental margin of North America reveal distinctive features created by the Western Boundary Undercurrent, a deep current associated with the thermohaline circulation of the Atlantic. Current lineations observed in oriented bottom photographs taken on the continental rise show features indicative of significant sediment transport and deposition parallel to bathymetric contours. Bottom current directions inferred from the orientation of current lincations correspond to the flow direction of the Western Boundary Undercurrent predicted long ago by the pioneering work of Georg Wüst. Sediment cores reveal a distribution of distinctive brick-red clay that has apparently been transported from the Cabot Strait southwesterly to. the Blake-Bahama Outer Ridge. Massive muddy sands are typically found on abyssal plains. The graywacke-type sands from the abyssal plains may exceed 50 cm in thickness, and as a rule, rarely exceed 50 per 10 m of core. The continental rise is, on the other hand, underlain by sediment containing as many as 500, thin (<I cm), well-sorted silt lamina per 10 m. These silts are relatively clay-free and usually contain cross-beds accentuated by heavy mineral placers. The continental rise appears to have been constructed by: I) material injected laterally into low velocity ( < 30 cm/sec) contour-following bottom currents by high velocity (> IOOcm/sec) turbidity currents flowing downslope; and 2) continental material transported in suspension through the water column and subsequently mixed with pelagic components to form hemipelagic sediment. The very largest and most competent turbidity currents reach the abyssal plains where they deposit relatively thick beds of muddy, graded coarse sand, silt and clay known as Turbidites. The well-sorted fine sand, silt and clay laminations deposited by contour currents flowing on the continental rise are known as Contourites.
Effect of PLA/Gelatin/PBAT-Based Three-Layer Film with Added Physalis Leaf Extract on Shelf-Life Extension of Fish Meat Powder
Authors: Murugan Gokulprasanth , Benjakul Soottawat , Subbiah Balasundari , Dhanushkodi Manikandavelu , Pandi Ganesan , Govindhasami Elavarsan , Stephen Nimish Mol , Nagarajan Muralidharan
Published: February 2025

Research background. Nowadays, there is growing interest in active packaging infused with natural extracts due to safety concerns and consumer preferences. Physalis angulata is a medicinal and edible species of Solanaceae family and rich in phenolic compounds. Phenolic compounds, the secondary metabolites are synthesized and stored in all plant tissues, which acts as a plasticizers/filler material can be used to enhance the interfacial interaction between the two biopolymers and prevent moisture and gas transmission from the food product and prolong the shelf life to some degree.
Experimental approach. Effect of fish gelatin based (Poly lactic acid (PLA)/Gelatin/Poly butylene adipate-co-terephthalate (PBAT)) three-layer film incorporated with and without Physalis leaf extract (PLE) on quality changes of fish meat powder stored at 27–30 °C (30 days) were investigated, in comparison with uncovered samples and those covered with polyethylene (PE) film, PLA, PBAT and gelatin films. Fish meat powder was sealed in a cylindrical bottle covered with developed films. The storage characteristics such as moisture content, pH, peroxide value (PV), thiobarbutric acid reactive substances (TBARS), total volatile base-nitrogen (TVB-N), changes in colour, sensory properties and volatile compounds of fish meat powder that packed with the developed film were analysed.
Results and conclusions. Moisture content of meat powder was lower for sample covered with film (P/G/B-PLE-7%) throughout the storage period. However, the sample covered with PE film exhibited highest PV amongst others (p<0.05). TBARS, TVB-N as well as volatile compounds lowered for the samples covered with P/G/B-PLE-7% at 30th day of storage. PLE incorporation into three-layer film improved the properties of the film and prolonged the shelf life of fish meat powder. Thus, the addition of PLE into three-layer film might serve as biodegradable active packaging and could be a promising substitute to commercial plastic films.
Novelty and scientific contribution. This is the first report on examining the chemical changes of fish meat powder covered with PLA/Gelatin/PBAT three-layer film incorporated with PLE. This will provide better understanding about the role of three-layer film containing Physalis leaf extract on shelf life extension of fish meat powder.
The effect of neoprene thumb abduction splints on upper limb function in children with cerebral palsy
Authors: Hughes Ashleigh , Franzsen Denise , Freeme Juliana
Published: February 2025

Introduction: Children with cerebral palsy (CP) have limitations in hand function due to weakness and spasticity, with long term effects causing shortening and stiffness of muscles in the hand and arm. The soft neoprene thumb abductor splint is prescribed by occupational therapists to correct these impairments. There is insufficient evidence for the effectiveness of this splint on upper limb function in children with CP with a thumb-in-palm deformity within the South African public health context.Methods: A non-blinded randomised intervention study was carried out in a CP clinic at a tertiary level public hospital. Twenty-eight CP children between the age of 18 and 68 months, presenting with thumb-in-palm deformity, functioning on a Level II to IV on the Gross Motor Function Classification Scale (GMFCS) participated in the study.The Quality of Upper Extremity Skills Test (QUEST) was used to assess upper limb function in terms of dissociated movement, grasps, weight bearing and protective extension to obtain baseline information. Both the intervention and control groups received monthly individual occupational therapy and a home programme over a three month period. The intervention group additionally received a soft neoprene thumb abduction splint.Results: No statistically significant differences between the intervention and control groups were found. Clinically relevant between group differences indicated by effect sizes were found however with large effect sizes for the total QUEST score and weight bearing.The effect size for improvement within the intervention group was large for dissociated movement and weight bearing with and without the splint on as well as for grasps with the splint on. Only dissociated movement showed a clinically relevant medium effect size for change within the control group. Protective extension decreased within both groups except for the intervention group with the splint on.The caregivers/parents perceived the home programme as easy to follow, and those who were prescribed the splint mostly reported that it was easy to use.Conclusion: Soft neoprene thumb abduction splints have a positive effect on weight bearing and upper limb function in children with thumb-in-palm deformity, particularly with the splint on. Further research is recommended in the area of splinting in CP
Além do estigma: um olhar sensível sobre as vidas de mulheres na prostituição
Authors: Antoniassi Junior Gilmar , De Oliveira Gabriela Galvão
Published: February 2025

INTRODUÇÃO: A prostituição é cercada por complexidades sociais e históricas, com foco no estigma e na marginalização das mulheres que a exercem. Ao longo da história, as atitudes sociais moldaram a visão sobre essas mulheres. OBJETIVO: Enunciar as sensações ante a história de vida de garotas de programas que estão no contexto da prostituição em casas de encontros. MÉTODOS: Trata-se de uma pesquisa qualitativa de natureza exploratória e histórica. Utilizando de roda de conversa, em que participaram sete mulheres de uma casa de encontros no Alto Paranaíba, Minas Gerais, que foram entrevistadas. Tendo como pergunta disparadora: como as histórias de vida de mulheres que atuam como garotas de programa em casas de encontros refletem suas percepções? A coleta de dados foi analisada com base na Análise da Conversação e na análise de conteúdo. RESULTADOS E DISCUSSÃO: As participantes compartilharam suas experiências de vida, as motivações para entrarem na prostituição e os desafios que enfrentam no dia a dia, apontando que as motivações para a prostituição são econômicas, associadas à falta de opções de trabalho e à necessidade de sustento familiar. As mulheres também relataram experiências traumáticas, como abuso e expulsão de casa. A pesquisa destaca como o estigma social afeta profundamente a autoestima e a visão que elas têm de seus corpos, muitas vezes objetificados. Mesmo assim, as mulheres demonstram resiliência e aspiram a uma vida melhor para si e suas famílias. CONCLUSÃO: O estudo reforça a necessidade de uma abordagem mais empática e compreensiva em relação às mulheres na prostituição. Embora enfrentem estigmas e marginalização, essas mulheres possuem histórias complexas, e seus relatos revelam uma luta por sobrevivência e dignidade.
Trend of Dengue Cases in Ecuador during the First Quarter of 2024
Authors: Ariel Antonio Torres Rodriguez , Martha Maria Fors Lopez , Erik Renato Leon Zapata
Published: February 2025

A retrospective cross-sectional descriptive study was conducted with the aim of describing the current situation of Dengue in Ecuador in the first quarter of 2024 and demonstrating the presence of an outbreak due to the significant increase in the number of cases. No sample calculation was performed as 100% of patients diagnosed with Dengue in the study period were used; 3 variables were addressed: frequency of cases, severe cases, and deaths, proportion statistics such as rate and percentage were used, and linear regression was used for trends. The study was extended to cases with warning signs to further visualize the alert situation in the country. The results showed a significant increase in cases in the context of a dengue outbreak in Ecuador, generating a warning of a significant increase in cases and a projection of an increasing number of cases in the coming years. Promoting the need to strengthen dengue control and prevention actions in the country.
Evaluation of Quality Characteristics of Eggs from Local and Improved Guinea Fowls Raised under Semi-intensive Management System
Authors: Garba S , Nasiru MH , Muhammed NA , Taiwo KA
Published: February 2025

This study was conducted to evaluate the quality characteristics of eggs using 160 eggs from local and improved guinea fowls raised under semi-intensive management systems in Wammako Local Government Area of Sokoto State, Nigeria. The two selected guinea fowl flocks were regarded as the treatments, represented as T1 and T2 respectively. Each treatment was replicated 10 times. The local and improved Guinea fowl were sourced from local Guinea fowl producers in Villages of Wammako Local Government Area of Sokoto, Sokoto State, Nigeria. External and internal egg quality parameters from the two flocks were evaluated. Data generated from the study was subjected to analysis. The results showed that there were significant differences (p < 0.05) between the treatments in all the external egg quality and internal quality of eggs measured except yolk colour (p > 0.05). The study concluded that improved guinea fowl possessed good egg quality characteristics compared to local guinea fowl. It is therefore recommended that consumers and food processing industries should utilize eggs from improved guinea fowl which is considered superior in terms of quality compared to local guinea fowl.
GEOMETRIC ANALYSIS AND MATHEMATICAL MODEL OF A POLYCENTRIC KNEE MECHANISM
Authors:   Slovak University of Technology in Bratislava, Faculty of Materials Science and Technology in Trnava, Institute of Production Technologies, Niznan P. , Csekei M. ,   Slovak University of Technology in Bratislava, Faculty of Materials Science and Technology in Trnava, Institute of Production Technologies, Sido J. ,   Slovak University of Technology in Bratislava, Faculty of Materials Science and Technology in Trnava, Institute of Production Technologies, Kostal P. ,   Slovak University of Technology in Bratislava, Faculty of Materials Science and Technology in Trnava, Institute of Production Technologies, Zelnik R. ,   Slovak University of Technology in Bratislava, Faculty of Materials Science and Technology in Trnava, Institute of Production Technologies
Published: February 2025

This paper focuses on calculating the central distances of polycentric joints designed to replicate the natural motion of the human knee. A key aspect is the shortening of the central distance during the swing phase, which reduces tripping risk and improves gait stability. Using mathematical modeling, the study analyzes the dynamic changes in instantaneous centers of rotation and their impact on knee biomechanics. The results enable a more precise design of polycentric prosthetic joints, enhancing their functionality and adaptability for users.
Reimagining Blended Learning Post-COVID-19: Insights from EFL Students’ Narratives
Authors: Febrianto Aziza Restu , Talenta Pratama Irwin
Published: February 2025

Background: During and after the COVID-19 pandemic, many academics and researchers in English Language Teaching (ELT) have studied a variety of issues faced in various types of online teaching and learning, including examining the efficacy of the Blended Learning (BL) approach as a result of the emergency remote and fully online learning or e-learning in response to the learning-from-home policy. Nevertheless, the researchers discovered that only a few studies employed a narrative inquiry method to explore students' perspectives, stories, and voices relating to their ways of learning during and after the pandemic.
Objective: This study helped the researchers better understand the challenges students faced and the adjustments they made, providing unique insights that other methods might miss.
Methods: This study addresses that gap by examining the stories and views of nine EFL students from three Indonesian universities who experienced various learning modes during and after the pandemic, including face-to-face, fully online, and blended classes. The students were requested to share their experiences and viewpoints about the BL approach through open-ended questionnaires and semi-structured interviews. The methods and tools from the narrative analysis were then employed to analyze the gathered stories and responses.
Findings: The findings indicate that while most students supported BL using appropriate online tools, their understanding of the approach varied, emphasizing the need for specific conditions for its successful implementation.  
Conclusion: This study contributes to the understanding of the approach variations of BL.
Processo editorial trilíngue de artigos científicos
Authors: Valentim Marta Lígia Pomim , Penna Joana Gentil
Published: February 2025

O processo editorial trilíngue envolve a criação, edição e distribuição de conteúdo em três idiomas diferentes. Este processo é especialmente relevante em contextos multiculturais ou internacionais, em que o público-alvo é oriundo de distintos países e, portanto, falam diferentes idiomas. A gestão do processo editorial trilíngue requer uma boa coordenação entre os membros da equipe, e precisa envolver a colaboração de todos os envolvidos: autores, editores, tradutores, revisores, normalizadores, etc. Esses desafi os exigem uma abordagem estruturada, com planejamento rigoroso, recursos adequados e profissionais comprometidos, para garantir que o conteúdo tenha alta qualidade em todos os idiomas envolvidos.
Gestão compartilhada na revista Biblios
Authors: Drumond Larissa Bárbara Borges , Silveira Lúcia da , Rezende Laura Vilela Rodrigues , Silva Fabiano Couto Corrêa da , Pereira Gleice , Andretta Pedro Ivo Silveira , Santillán-Aldana Julio , Rozemblum Victoria , Abedrapo Isabel
Published: February 2025

A gestão de revistas científicas é normalmente desempenhada voluntariamente por atores envolvidos em outras demandas em suas instituições de origem, havendo uma alta e prejudicial rotatividade nas equipes editoriais. Neste cenário, objetivou-se apresentar o caminho encontrado pela Revista Biblios para enfrentar este desafio: a gestão compartilhada. Trata-se de relato de experiência, no qual se discorre sobre a adoção de tecnologias colaborativas, revisão das políticas editoriais com foco em ciência aberta, criação de um plano de comunicação e ampliação da equipe com participantes internacionais. Conclui-se que gestão compartilhada e inovação contínua são fundamentais para a manutenção e crescimento da revista.
O uso de termos relacionados a “revisão por pares aberta” em pesquisas
Authors: Shintaku Milton , Vieira Junior Nilson Carlos
Published: February 2025

O presente trabalho visa verificar a relação do uso de termos relacionados a modalidade conhecida como “Revisão por pares aberta” em pesquisa no Google acadêmico no Brasil. Sua metodologia baseada nos estudos exploratórios descritiva com uso da pesquisa bibliográfica. Apresenta resultados dos termos utilizados e suas variações e como considerações finais apresenta o uso do termo revisão aberta pelos pares como o mais utilizado no país.
Russian Military Sailors in Africa: People and Texts (1904—1905)
Authors: Kozvonin Artem
Published: February 2025

The article treats with the participants of the 1904—1905 voyage around Africa of the 2nd Pacific Squadron under the command of Zinoviy Rozhestvensky and their contribution to the accumulation of knowledge about the Black Continent. The role of the Squadron’s predecessors in the exploration of Africa, Russian travellers and scientists, as well as military sailors, who had been conducting long voyages since 1803, the results of which were reflected, in particular, on the pages of the Marine Collection and travel reports, is noted. A distinctive Squadron’s contribution to the study of Africa has been revealed, which is that for the first time, an unprecedented large number of travellers from various social and professional backgrounds have left numerous and diverse documents of personal origin about African territories little known to Russians.
Soviet Teachers in Tanzania in the 1960s — 1980s: a Collective Portrait (Based on GARF Archival Materials)
Authors: Lazarev Aleksei
Published: February 2025

In the article on the basis of the documents of the State Archive of the Russian Federation provides a general description of a group of Soviet teachers who worked in Tanzania in the 1960s — 1980s. Beginning in 1969, in accordance with the terms of the Soviet-Tanzanian contract on the secondment of Soviet specialists, teachers arrived in Tanzania on an annual basis to work in Tanzanian secondary schools. The teachers sent on secondment were middle-aged, lived primarily in the RSFSR, BSSR and UkSSR, had experience teaching in secondary schools, and traveled with their families. Upon arrival in Dar-es-Salaam, the teachers were assigned by the Tanzanian Ministry of National Education to educational institutions in need. The places of work were mainly boarding schools located in rural areas. During their work, the teachers could hold the position of class teachers and perform auxiliary work. Relations with the teaching staff, school administrations and students were generally good and prosperous. The specialists lived either in apartments or in houses with a private household. For transportation, they mainly used public transport or motorcycles, since the purchase of personal cars was greatly hampered by the currency and financial crisis in Tanzania.
The First Russian Thesis on the Anglo-Boer War in the Context of the Marxist Study of South African History in the 1930s
Authors: Gorelik Boris
Published: February 2025

In the 1920s — 1930s, the late modern period of the southern African history was viewed through the prism of contemporary political and ideological issues and based, among other things, on the Marxist-Leninist theory of imperialism. A. F. Ostaltseva’s thesis “The Anglo-Boer War and its Impact on England’s Foreign Policy” (1940) was the first Marxist study of the South African armed conflict of 1899—1902 in the world historiography. Her work demonstrates that, in the Soviet Union, the Anglo-Boer War was studied primarily to clarify the causes and preconditions of the First World War. Ostaltseva’s thesis was not published, despite a recommendation from the Academic Board of the Institute of History, Soviet Academy of Sciences, and has not been integrated into the historiography. Apparently, it is because in the second half of the 1940s, the elucidation of the origins of the First World War lost its relevance, and researchers turned to investigating the causes and circumstances of the latest global armed conflict.
Territorial barriers in urban environments: Conceptualisation of the term and assessment methodology (case study of the central area of Perm)
Authors:   Perm State University, Volkov Stanislav A. , Merkushev Sergey A. ,   Perm State University, Tarantin Mikhail R. ,   Perm State University
Published: February 2025

Introduction. This study focuses on the examination of territorial barriers in urban environments. It analyses the main types of
barriers, their role in the spatial development of the city, and their impact on the formation of socio-economic interactions. Data and Methods.
A methodology forcalculating the permeabilitycoefficient of territorial barriers has been developed. This methodology is based on acombination
of objective criteria (accessibility, traversability) and subjective evaluations (type of crossing, accessibility, isolation, type of surface, surface
quality). Results and Discussion. The methodology was tested using segments of the boundary of the central area of Perm. Calculations confirmed
the highest permeability of contact boundaries, which primarily serve as nominal demarcation lines. Restrictive and divisive boundary segments
show varying degrees of barrier effects depending on the level of infrastructural development. Problematic segments are characteristic of zones
with changing functions. Conclusions. The proposed methodology allowed for a more objective characterisation of boundary types, clarification
of their functional features, and the development of recommendations for altering specific boundary segments. For instance, segments near
Chernyaevsky Forest Park and the Solovyov Garden were recommended to be designated as contact boundaries.
An Emergent Intraoperative Intervention: Central Venous Catheterization in a Prone Patient during Spinal Surgery
Authors: Tavakoli Farhad , Eslami Babak , Jafari Fatemeh , Pestei Khalil , Montaseri Alireza
Published: February 2025

Central venous catheterization is a critical procedure for patients undergoing major surgeries, particularly when peripheral venous access is compromised. This case report delineates the emergency placement of a central venous catheter (CVC) through the right internal jugular vein in a 63-year-old female patient positioned prone during spinal surgery. The necessity arose following significant intraoperative blood loss and the failure of peripheral venous access, presenting unique challenges due to the patient's position and the absence of sonographic guidance. The procedure was successfully executed by anatomically identifying the insertion site and utilizing a posterior lateral approach, which underscores the feasibility and urgent need for CVC placement in atypical scenarios. The patient demonstrated significant improvement with stable postoperative outcomes, emphasizing the importance of adaptability in clinical practices. This case contributes to the limited but growing body of literature on prone position CVC insertion, highlighting its viability in emergencies, despite inherent risks and technical difficulties. The findings advocate for further research and development of guidelines to enhance patient safety and procedural success in complex clinical settings.
Pharmaceutical-Induced Dyskinesia: A Case Study of Thoracotomy Treated with Amantadine
Authors: Mojtahedzadeh Mojtaba , Najafi Atabak , Hosseinzadeh Farahnaz , Saghafi Fatemeh
Published: February 2025

Dyskinesia, marked by involuntary and irregular movements, can result fromvarious pharmaceutical agents. The case presented features a patient undergoingthoracotomy, experiencing dyskinesia, likely attributed to antipsychotics, antiemetics,and antibiotics, and subsequently treated with amantadine.
A Case Report of Spinal Tuberculosis with Multilevel Vertebral Fractures and Paraplegia
Authors: Tabatabaei Matineh Sadat , Shafiei Saber , Damavandi Motlagh Arash Chehreh , Nasimi Mohammad
Published: February 2025

Spinal tuberculosis (TB) is a rare extrapulmonary manifestation that can causevertebral fractures, neurological deficits, and paraplegia. This report presents a43-year-old male with sudden paraplegia, back pain, and sensory loss. MRI revealedfractures in T10, T11, and L5, and histopathology confirmed spinal TB with concurrentpulmonary TB and pleural effusion. The patient’s history of chronic dexamethasonemisuse contributed to immunosuppression and disease dissemination. Classified asGrade 4 paraplegia, his condition required surgical stabilization, anti-TB therapy, andsupportive care. This case highlights the rarity of multilevel vertebral fractures andsevere neurological deficits in spinal TB, emphasizing the importance of early imaging,tissue biopsy, and prompt multidisciplinary intervention to prevent permanent disability.
Prospektiba gobernuetan: nazioarteko ereduak eta horien potentziala Euskadin
Authors: Izulain Ane , Aranguren Mari Jose , Wilson James ,   Universidad de Deusto
Published: February 2025

Egungo ziurgabetasun, aldakortasun, aldaketen azkartasun, interdependentzia eta hiperkonektibitate maila altuko ingurunearen aurrean, plangintza-hurbilketa tradizionalak ez dira nahikoak, eta etorkizuneko zientziak goraka doan diziplina gisa sortzen dira, gobernuei eta policymakerrei etorkizun desiragarriagoa eraikitzen laguntzeko. Koaderno honek prospektiba gobernuetan integratzeko nazioarteko sei eredu biltzen ditu, eta hausnarketa-esparru bat proposatzen du transdiziplina hori beren aparatuan ezarri eta zeharkakotu nahi duten erakunde publikoentzat.
Futures studies in governments: international models and their potential in the Basque Country
Authors: Izulain Ane , Aranguren Mari Jose , Wilson James
Published: February 2025

In the current environment of high levels of uncertainty, volatility, rapid change, interdependence and hyperconnectivity, traditional planning approaches are insufficient, and futures domain is emerging as a growing discipline to support governments and policymakers in building a more desirable future. This notebook brings together six international best practices in the integration of foresight in governments, and proposes a framework for reflection for those public institutions that want to implement and mainstream this transdisciplinary approach in their apparatus.
Wybrane aspekty zarządzania procesami, projektami i ryzykiem w przedsiębiorstwach
Authors: Brajer-Marczak Renata , Brzeziński Jakub , Rudnicka-Reichel Agata , Głodek Paweł , Huk Katarzyna , Kałkowska Joanna , Domańska-Szaruga Beata , Wereda Wioletta , Spałek Seweryn , Brzozowski Maciej , Wyrozębski Paweł , Cichocki Hubert , Soroka-Potrzebna Hanna , Skowron-Mielnik Beata , Sobiecki Grzegorz , Kamiński Robert , Jasiński Bartosz , Sienkiewicz-Małyjurek Katarzyna , Jonek-Kowalska Izabela , Drzewiecki Jakub , Kulińska Ewa , Giera Julia , Derek Paweł , Niziołek Konrad , Boczkowska Katarzyna
Published: February 2025

Monografia zawiera artykuły z obszaru nauk o zarządzaniu i jakości, przygotowane przez badaczy wywodzących się z głównych ośrodków naukowych w kraju. Składa się z dwudziestu tekstów, w których omówiono bieżące kwestie dotyczące zarządzania przedsiębiorstwem – zarówno z perspektywy teorii, jak i praktyki. Z punktu widzenia zawartości merytorycznej w książce wyodrębniono trzy części. Pierwsza jest poświęcona tematyce zarządzania procesowego. Druga obejmuje opracowania z dziedziny zarządzania projektami. W ostatniej części zostały zaprezentowane współczesne wyzwania stojące przed osobami zarządzającymi ryzykiem w przedsiębiorstwach.
Wierzymy, że publikacja zwróci Państwa uwagę, gdyż poruszono w niej jeszcze mało rozpoznane problemy z zakresu zarządzania przedsiębiorstwem i może stanowić inspirację do dalszych badań.
Ewa Sońta-Drączkowska, Izabela Bednarska-Wnuk
Faktor Implementasi Inisiasi Menyusu Dini (IMD) pada Persalinan Sesar: Studi di Salah Satu Rumah Sakit Rujukan Sekunder di Surabaya, Indonesia
Authors: Farizi Sofia Al , Dewi Vienne Citra , Izzati Dwi
Published: February 2025

Latar belakang: Persalinan sesar di Indonesia mencapai angka 17,6% pada tahun 2018 yang menghambat pelaksanaan Inisiasi Menyusu Dini (IMD). IMD berperan penting dalam keberhasilan ASI eksklusif dan kesejahteraan neonatus. Penelitian ini bertujuan untuk menganalisis faktor implementasi IMD pada salah satu rumah sakit rujukan sekunder di Kota Surabaya.
Metode: Penelitian observasional retrospektif menggunakan data rekam medik pasien. Sampel dalam penelitian ini sebanyak 248 perempuan bersalin yang diambil dengan random sampling. Analisis yang digunakan menggunakan pendekatan univariate dan bivariate dengan uji chi-square.
Hasil: Hasil penelitian ini menunjukkan bahwa IMD yang tidak berhasil terjadi pada ibu yang bersalin sesar dengan karakteristik usia diantara 15 sampai dengan 20 tahun (70%), pendidikan SD (85.4%), primipara (91.8%) dan dengan sesar CITO (97.1%). Tingkat pendidikan, paritas, jenis sesar merupakan variabel yang memiliki hubungan signifikan dengan keberhasilan IMD.
Kesimpulan: Deteksi dini dan pencegahan komplikasi harus menjadi prioritas terutama untuk komplikasi dan indikasi medis sesar, dan perlu adanya komitmen rumah sakit untuk mendukung IMD pada persalinan sesar melalui kebijakan dan regulasi rumah sakit.
Tempe Wastewater Treatment Using Effective Microorganism (EM) Based on Kepok Banana Peel Waste
Authors: Putri Dwi Yolanda , Nurhayati Indah , Sutrisno Joko , Kholif Muhammad Al , Widyastuti Sri
Published: February 2025

This study aims to evaluate the effectiveness of using Lactobacillus sp. bacteria as an Effective Microorganism (EM) solution derived from kepok banana peel waste to treat tempeh wastewater. The research was conducted using four reactors with varying EM concentrations (0%, 10%, 20%, and 30%) that were processed over 16 days. The results demonstrated a significant decrease in COD, BOD, and TSS levels. Reactor R4, containing 30% EM, reduced BOD by 78.01%, increased DO to 1.31 mg/L, and raised pH to 5.86. Reactor R3, with 20% EM, achieved the highest COD reduction of 78.13%. Additionally, Reactor R2, containing 10% EM, reduced TSS by 66.81%. This study indicates that EM derived from kepok banana peel waste can effectively degrade organic pollutants in tempeh wastewater, offering an environmentally friendly treatment method.
Methyl Red Based Test Strip for Identification of Formalin Compounds in Fish Samples
Authors: Haji Lina Sun , Anida Choirun Nisa , Aprilianti Caleysda , Fauziyyah Himayah Izmi , Pitaloka Diah Ayu , Zulfikar Zulfikar
Published: February 2025

Methyl red based test strips were introduced a simple method for formalin identification. The test strip was designed based on the feasibility of the formalin oxidation reaction using hydrogen peroxide in an alkaline medium and using the methyl red indicator which is detected at a wavelength of 526 nm, with a concentration range from 1.0 - 10.0 ppm. The test strip was designed by immobilizing methyl red and NaOH in a Whatman paper matrix number 40 for 40 minutes and it has been evaluated by adding formalin samples and oxidator to the surface of the test strip. Optimum measurement conditions were obtained at 0.05 mL of 0.06M methyl red, 0.2 mL of 0.001M NaOH and 0.25 mL of 2% H2O2. The test strip has a good performance to identify formalin in the concentration range of 1.0 - 7.5 ppm which is monitored by a color change from yellow to red. The feasibility of using the test strip is also carried out by analyzing real samples through a recovery test. Test strips still can be used to identify formalin until 30 days when it stored at room temperature, and 2 days when it stored in the refrigerator.
DETERMINANTS OF TAX AVOIDANCE IN INDONESIA
Authors: Hartinah Siti , Ais Ghina Ridahatul
Published: February 2025

ABSTRACTThe research aims to understand and test that tax avoidance can be influenced by audit committees, political connections, CSR and profitability. The research uses a quantitative research approach and data sources are obtained from annual financial reports. The population was obtained from mining sub-sector companies in Indonesia. Meanwhile, to determine the sample using a purposive sampling technique with samples that met the criteria of 15 companies and were studied over a 5 years period, namely 2017-2021 with a total of 75 samples. Meanwhile, to test the data and analyze it using multiple linear regression with the SPSS version 27 measuring tool. The results of this research state that Tax Avoidance cannot be significantly influenced by the Audit Committee. Meanwhile, Tax Avoidance can be influenced in a significantly positive direction by Political Connections. Profitability and Corporate Social Responsibility have a negative effect on Tax Avoidance.Keywords: Audit Committee; CSR; Political Connections; Profitability; and Tax Avoidance.
ABSTRAKPenelitian ini bertujuan untuk memahami dan menguji tax avoidance dapat dipengaruhi oleh komite audit, koneksi politik, CSR dan profitabilitas. Penelitian menggunakan metode dengan penelitian pendekatan kuantitatif dan sumber data diperoleh dari laporan keuangan tahunan. Populasi diperoleh dari perusahaan sub sektor pertambangan di Indonesia. Sementara itu, untuk menentukan sampel menggunakan  teknik purposive sampling dengan sampel yang memenuhi kriteria sebanyak 15 perusahaan dan yang diteliti selama periode 5 tahun yaitu 2017-2021 dengan total 75 sampel. Sedangkan, untuk menguji data dan menganalisis menggunakan regresi linier berganda dengan alat pengukur program SPSS versi 27. Hasil dari penelitian ini menyatakan Tax Avoidance tidak dapat dipengaruhi secara signifikan oleh Komite Audit. Sementara itu, Tax dapat dipengaruhi dengan arah positif secara signifikan oleh Koneksi Politik. Untuk  Profitabilitas dan Corporate Social Responsibility berpengaruh dengan arah negatif terhadap Tax Avoidance.Kata Kunci: CSR; Komite Audit; Koneksi Politik; Profitabilitas; dan Tax Avoidance.
MAINTAINING INTEGRITY: FRAUD HEXAGON ANALYSIS ENHANCING FINANCIAL STATEMENT FRAUD DETECTION
Authors: Anggraeni Firda , Suhadi Suhadi , Hardiningsih Pancawati
Published: February 2025

ABSTRACTThe objective of this study is to examine financial statement fraud through the lens of the fraud hexagon theory, which takes into account factors such as industry nature, CEO duality, external pressure, financial stability, ineffective monitoring, director changes, total accrual ratio, and political connections. Twelve securities that are listed on the Jakarta Islamic Index (JII) for before the pandemic (2018-2019) periods and the pandemic period (2020-2022) periods make up this research sample. This study applies Eviews 12 to panel data regression analysis techniques. According to this study, financial statement fraud is positively impacted by financial stability. Then, false financial statements are negatively impacted by the nature of the industry. External pressure, inadequate oversight, director changes, total accrual ratios, political ties, and CEO duality, on the other hand, do not appear to have any bearing on financial report manipulation. Based on this research, it is hoped that companies will disclose financial reports that reflect the real situation. Future researchers are advised to expand the sample scope and add different indicators to test factors in the hexagon fraud theory.Keywords: Fraud Hexagon; Financial Performance; Financial Report Fraud; Financial Stability; Non-Financial Performance
ABSTRAKPenelitian ini bertujuan menganalisis kecurangan laporan keuangan melalui teori fraud hexagon, yang diukur dengan external pressure, financial stability, nature of industry, ineffective monitoring, change in director, total accrual ratio, political connection, dan CEO duality. Sampel penelitian ini terdiri dari 12 sekuritas yang tercatat di Jakarta Islamic Index (JII) periode sebelum pandemi (2018-2019) dan periode pandemi (2020-2022). Riset ini memakai teknik analisis regresi data panel dengan mengaplikasikan Eviews 12. Riset ini memperoleh hasil financial stability berpengaruh positif pada kecurangan laporan keuangan. Kemudian nature of industry memiliki pengaruh negatif terhadap kecurangan laporan keuangan. Sementara external pressure, ineffective monitoring, change in director, total accrual ratio, political connection dan CEO duality tidak menggambarkan adanya dampak atas manipulasi laporan keuangan. Berlandaskan riset ini, diharapkan perusahaan mengungkapkan laporan keuangan yang mencerminkan keadaan sesungguhnya. Peneliti berikutnya dianjurkan memperluas cakupan sampel dan menambah indikator berbeda untuk menguji faktor pada teori kecurangan hexagon.Kata Kunci: Fraud Hexagon; Performa Keuangan; Kecurangan Laporan Keuangan; Kinerja Non Keuangan; Stabilitas Keuangan
DOES ROBUSTA COFFEE COMMONITY NEED A FUTURES CONTRACT?
Authors: Paramu Hadi , Sumardi Nurul Afifah , Puspitasari Novi
Published: February 2025

ABSTRACTThe coffee commodity is faced with a major problem, namely significant world price fluctuations which create financial risks in international trade in coffee commodities. Coffee exporters must manage risks arising from fluctuations in the price of robusta coffee in the commodity market. On the commodity exchange, futures contracts are available on coffee commodities which can be used to hedge risks. The aim of this research is to analyze whether robusta coffee exporters should implement hedging strategies or not. The analysis method used is a Monte Carlo simulation approach. The simulation was carried out to estimate commodity prices at the maturity date of the futures contract based on 960 historical data on daily commodity prices. Based on 500 experiments (simulations) on spot prices, the simulation results show that hedging using futures contracts tends to be better not done. Coffee commodity transactions on the physical market are considered to generate better income for exporters.Keywords: Coffee; Futures Contract;Hedging; Simulation
ABSTRAKKomoditas kopi dihadapkan permasalahan utama, yaitu fluktuasi harga dunia yang signifikan yang menimbulkan risiko finansial dalam perdagangan internasional komoditas kopi. Eksportir kopi harus mengelola risiko yang timbul karena fluktuasi harga kopi robusta di pasar komoditas. Pada bursa komoditas, tersedia kontrak futures pada komoditas kopi yang dapat digunakan untuk lindung nilai (hedging) atas risiko. Tujuan dari penelitian ini adalah untuk menganalisis apakah eksportir kopi robusta sebaiknya menerapkan strategi hedging atau tidak. Metode analisis data yang digunakan yaitu menggunakan pendekatan simulasi Monte Carlo. Simulasi dilakukan untuk mengestimasi harga komoditas pada masa jatuh tempo kontrak futures berdasarkan 960 data historis harga komoditas harian. Berdasarkan 500 kali percobaan (simulasi) pada harga spot, hasil simulasi menunjukkan bahwa hedging menggunakan kontrak futures cenderung lebih baik tidak dilakukan. Transaksi komoditas kopi pada pasar fisik dinilai menghasilkan pendapatan yang lebih baik untuk eksportir.Kata Kunci: Hedging; Kontrak Futures; Kopi; Simulasi
Analisis Efisiensi Konsumsi Bahan Bakar dan Emisi CO2 pada Truk Angkut di Operasi Tambang Terbuka
Authors: Syamsuddin Syamsuddin
Published: February 2025

Konsumsi bahan bakar dan emisi CO2 dari truk angkut (Haul Truck) di operasi tambang terbuka merupakan masalah penting yang mempengaruhi efisiensi energi dan dampak lingkungan sektor pertambangan. Penelitian ini bertujuan untuk menganalisis efisiensi konsumsi bahan bakar dan emisi CO2 truk angkut dalam kondisi operasional aktual di tambang terbuka, dengan fokus pada pengaruh kondisi jalan tambang, termasuk lebar jalan, tikungan, dan kemiringan. Metode penelitian melibatkan pengumpulan data empiris dari operasi truk angkut di tambang terbuka, termasuk spesifikasi truk, karakteristik jalan, dan variabel operasional. Data dianalisis dengan membandingkan kinerja bahan bakar truk terhadap jalan tambang pada tikungan dan mengevaluasi dampak kondisi jalan terhadap emisi CO2. Hasil penelitian menunjukkan bahwa jalan tambang dengan radius tikungan yang lebih kecil 15,30 m mengkonsumsi bahan bakar sebesar 100 liter/jam dan emisi CO2 sebesar 268 Kg CO2/liter, sedangkan pada radius tikungan yang lebar 32,03 m mengkonsumsi bahan bakar sebesar 50 liter/jam dan emisi CO2 sebesar 134 Kg CO2/liter menyebabkan peningkatan signifikan pada konsumsi bahan bakar dan emisi CO2. Kondisi operasional ini memaksa truk untuk melakukan akselerasi dan deselerasi berulang kali, yang mengurangi efisiensi energi. Penelitian ini menyarankan optimalisasi desain jalan tambang untuk meningkatkan efisiensi bahan bakar dan mengurangi emisi gas rumah kaca. Implikasi dari penelitian ini penting bagi industri tambang, karena dengan perbaikan desain infrastruktur jalan tambang, operator dapat mengurangi konsumsi energi dan berkontribusi pada pencapaian target keberlanjutan.
Analisis Lebar Jalan Tambang Terhadap Produktivitas Hydraulic Shovel Liebherr R996 & Dump Truck Hitachi EH4500 di PT XYZ
Authors: Rini Utari Retno Sulistyo , Manek Emanuel G. , Mulyani Kurnia Dewi , Aminah Siti
Published: February 2025

PT XYZ adalah perusahaan yang bergerak di bidang pertambangan batubara yang menerapkan sistem penambangan terbuka. Pengupasan lapisan tanah penutup batubara di Pit X PT XYZ dilakukan dengan alat muat hydraulic shovel Liebherr R996 sebanyak satu unit dan alat angkut dump truck Hitachi EH4500 sebanyak enam unit. Target pengupasan tanah penutup di Pit X adalah sebesar 2.100 BCM/jam. Saat ini produktivitas hydraulic shovel Liebherr R996 sebesar 1.970,385 BCM/jam dan untuk dump truck Hitachi EH4500 sebesar 1.450,77 BCM/jam. Saat ini target produktivitas belum tercapai karena adanya beberapa faktor di PT XYZ dan yang akan menjadi fokus penelitian ini pada faktor jalan angkut yang kurang lebar di beberapa titik. Upaya pencapaian produktivitas dapat dilakukan dengan cara pelebaran jalan angkut. Dari pengamatan lapangan waktu edar dump truck adalah 23,30 menit. Dengan simulasi perhitungan, pelebaran jalan dapat mengurangi waktu edar dump truck menjadi 21,30 menit dan produktivitas dump truck meningkat menjadi 1.703,03 BCM/jam. Namun, alternatif ini perlu digabungkan dengan beberapa alternatif tambahan dalam mencapai target yang signifikan di PT XYZ seperti meningkatkan nilai bucket factor shovel, peningkatan efisiensi kerja dan penambahan alat angkut. Sehingga pada akhirnya diharapkan adanya kelanjutan kajian terkait alternatif-alternatif tambahan tersebut sehingga PT XYZ dapat mencapai target yang diharapkan secara signifikan.
Pengaruh Modul Berbantuan Alat Peraga Berbasis Hidrolik Pada Materi Fluida Statis Terhadap Keterampilan Proses Sains Kelas XI SMAN 16 MEDAN
Authors: Atika Dwi , Syahwin Syahwin , Rizaldi Rachmat , Fitriana Sheila , Mardiana Nana , Mardiana Tri Astuti
Published: February 2025

This research aims to determine the effect of using a module assisted by hydraulic-based teaching aids in static fluid material on the science process skills of class XI students. This research was carried out at SMAN 16 Medan for 1 week in November 2023 with a sample of 70 students. The research method used is a quasi-experimental research design with a monequivalent control group design. The sample was selected by purposive sampling from 206 class XI science students. The data collection technique used the science process skills test. The sample was divided into two groups, namely the control group and the experimental group. The results of the posttest hypothesis test with the t test at α = 0.05 obtained a sig value. (2-tailed) of 0.000 with the conclusion H_1 being accepted (there is an influence of the use of modules assisted by hydraulic-based teaching aids in static fluid material on the science process skills. The increase in science process skills in the experimental class was 16.18%.
Keywords :Module, Teching Aids, Hydraulics, Static Fluid, Science Process Skil
ls
Unraveling the Mechanism How Extremely Low Frequency (ELF) Magnetic Fields 300 Microtesla Stimulate Tempe Fermentation.
Authors: Wahyuni Puja Dwi , Subroto Felicia Ariella Nesya , Dini Fraya Jamalfia A'yuni , Cossinta Btari Cahya , Grahita Amanda Claudia Ayuning , Ramadhani Nurul Syami , Kurnia Sa'idah Intan , Baihaqi Habibah Khusna , Aida Maha Nur
Published: February 2025

Electromagnetic field (ELF) is a non-pegion radiation because it has an electromagnetic wave spectrum frequency below 300 Hz. Electromagnetic wave radiation with a very low frequency can inhibit a decrease in pH which can slow the growth of bacteria in a material or product. Tempeh is a fermented food made from soybeans or other beans using the molds Rhizopus oligosporus and Rhizopus oryzae. The purpose of this study was to determine the effect of exposure to elemental magnetic field of marine frequency (ELF) in the process of tempeh fermentation. This research used experimental method by comparing control and experimental groups. Data obtained from the research conducted such as PH, density, tempeh color, tempeh aroma, and tempeh texture. The results showed that based on the results obtained, it can be concluded that exposure to the Elf magnetic field is thought to increase the activity of microorganisms involved in the fermentation process of tempeh such as Rhizopus oligosporus.
Analysis of Pre-service Teacher’s Public Speaking Skills in Explaining Basic Physics Concepts Through Instagram Content
Authors: Saputra Aji , Isra Hutri Handayani , Amiroh Dewi , Masrifah Masrifah , Sambiri Usman
Published: February 2025

Previously, public speaking should be done in classrooms, halls, or fields attended directly by participants. Nowadays, social media such as Instagram allows its users to upload videos, include captions, show videos to everyone and include a comment column for discussion space. This research aims to determine students' public speaking skills after using Instagram media to present their content. This research is qualitative research with a descriptive approach. The selection of respondents used a saturated sampling technique, namely 32 students taking the Basic Concepts of Physics course for elementary schools. Data collection techniques were carried out through observation, questionnaires and literature study. Next, data analysis uses Miles and Huberman analysis. The results and conclusions of this research are: 1) By creating science content on Instagram, students' public speaking skills are in a good category, 2) The project of creating educational content on Instagram is effective in making students learn the material that will be presented, so they can sharpen basic concepts their science and broaden their horizons.