bluuebunny/crossref_metadata_2025 huggingface dataset:
Bone Traces and Modifications from Feeding by Dermestes maculatus
Authors: Higley Leon G , BV Adams
Published: May 2024

That D. maculatus feeding can leave marks on bones is established in the literature - that D. maculatus routinely mark bones is not. Our results here, exposing fleshed bones to D. maculatus adults and immatures for almost two months after complete tissue removal, indicate that under natural conditions D. maculatus do not feed on bones. The key issue seems to be the ability of D. maculatus to seek new food sources versus being confined (and eventually starving) on bones. In a natural setting, once a food supply is exhausted, D. maculatus would seek new food sources. If this process is somehow interrupted, such as through placement of an infested body in a sealed container or experimentally over a long (months to a year) period, D. maculatus could feed on bone. Based on this conclusion, whether in forensics analysis or paleontological analysis, we think the working assumption should be that D. maculatus does not alter bone, with the exception (as we outlined) when beetles and bones are in an enclosure that prevents beetle emigration.
Sifting through the COVID-19 Pandemic
Authors: Fimia-Duarte Rigoberto , PR Vogt
Published: May 2024

There are approximately 6,400 species of mammals on our planet. Bats represent 20% of the mammalian population. There are 1,000 different types of bats, and they are the only mammals that can fly, which explains their great range of movement. Fruit bats harbor a large number of viruses. In the history of their development, fruit bats have probably been the entry point for viruses into the mammalian lineage.
Three Cases at Cnidarian Biology Laboratory (Labic) at differents Times: a done little frequent
Authors: Zamponi Mauricio O
Published: May 2024

From 2011 to 2024 there was three cases at Cnidarians Biology Laboratory (LABIC) non usual nor common. This phenomena was the discovery of three new species of cnidarians by researcher from another scientific institutions and these new species were calling with last name or second name of researcher from LABIC. These species were Bunodosoma zamponii dedicated to Dr. Zamponi, Dendronephthya perezi dedicated to Dr. Perez and Antholoba fabiani dedicated to Dr. Acuña. This international distinction is a good expression because this opinion came from external researcher to institution.
Aggregation Role of Mandibular Gland Secretions in the Giant Tropical Ant Paraponera clavata (Formicidae: Paraponerinae)
Authors: Martins Luiza Carla Barbosa , TT Andrade , PF Cristaldo , VA Araujo , JHC Delabie
Published: May 2024

Social insects exhibit sophisticated behavioral repertoires to maintain communication and regulate colony activities. To elucidate the behavioral mechanisms of social insects is essential a thorough understanding of morphophysiological characteristics, such as the functionality of exocrine gland secretions. In this study, it was analyzed whether the mandibular gland secretions influence the aggregation behavior of workers of the ant Paraponera clavata. Associated behavioral acts were also studied. Bioassays indicated that mandibular gland extract triggers aggregation behaviors in P. clavata workers. The observed behavioral acts include mandible opening, raising of the antennae, antennal contact with treated filter paper, selfgrooming, cleaning of the abdominal tip, and allogrooming. These observations demonstrate the potential multifunctionality of compounds secreted by mandibular glands within the behavioral repertoire of P. clavata.
Techniques for the Analysis of Covid-19 Virus: State-of-the-Art and Future Prospects
Authors: Sridhar S , M Hymavathi , B Sai Kishore , S Nazia , SR Shrisha , Bhargava Suresh K
Published: May 2024

SARS-CoV-2 was first reported in 2019 in China, which then inadvertently spread rapidly across the globe and by 2020 WHO has confirmed Covid-19 as a pandemic. Infections have been transmitted through airborne mechanisms leading to an exponential spread which called out for a strategic medical action plan to curtail the spread. Though WHO has established definite guidelines for containing the spread, such as isolation, social distancing, mandatory masks, sanitization, quarantines, international travel bans, and lockdowns. Early diagnosis and a large number of screenings were given a crucial role in the medical action plan, as they helped in delivering the medical aid and protecting the uninfected population. Various diagnostic methods have sprung up to detect Covid-19 with varying modes of sample collection, time of sampling, duration of test results, and accuracy. These diagnostics tests have been majorly based on a molecular and serological assays which are readily available, mass-produced, easy to handle, offer high accuracy, and shorter duration for results. This review article consolidates the functionality and efficacy of different diagnostic methods describing details of their functioning mechanisms, limitations, and accuracy of the test results. The role of artificial intelligence and deep learning algorithms have also been mentioned for future integrations to make the diagnostic tools efficient, reproducible, and robust. Auxiliary methods like Point care devices, biosensors, and lateral flow devices have also been used for quick diagnosis, which is however only qualitative in nature. Each technique is unique and has its limitations, but in testing times like a pandemic every technological development can be a game-changer when put to the right use.
A Rare Primary Renal Lymphoma with Liver and Adrenal Gland Metastasis: A Case Report
Authors: R Safwate
Published: May 2024

Extra-nodal lymphomas include about 25%–35% of non-Hodgkin lymphomas (NHL), with the most frequent sites being the skin, small intestine, and stomach. Renal involvement by a lymphomatous tumor is rare, the majority of these tumors are nonHodgkin lymphomas and in more than 90% of cases this renal location is secondary. This neoplasm is frequently misdiagnosed initially as renal cell carcinoma. In this article we report a very unusual case of primary renal lymphoma (PRL) with hepatic and adrenal gland metastases in a 65-year-old woman.
The Causes of Acute Kidney Injury are Numerous
Authors: S Franjic
Published: May 2024

The causes of acute kidney injury are numerous because it can occur due to infection, trauma, kidney stones, toxic drugs, but it can also occur during hospital treatment. People with acute kidney injury suddenly lose kidney function, which leads to poor urine output and accumulation of body waste products
Bed Wetter: An Upset 9 Y Old Boy with Primary Mono symptomatic Nocturnal Enuresis
Authors: B* Dormanesh
Published: May 2024

Background: Bed wetting or nocturnal enuresis is seen in 15% of children over 5 Yr. it is primary in 75-90% of cases and the monosymptomatic enuresis is more common and should be estimated after ruling out other symptoms. In here we report a case of a 9-year-old boy who referred with a permanent primary monosymptomatic nocturnal enuresis and he was quite upset and had a tired and unhappy family. Case Presentation: This is a clinical combined therapy case study. A 9-year-old boy was referred with a chief complaint of bed wetting, which was primary and monosymptomatic, but because of experiencing of wrong incomplete period of treatments, they were disappointed. He had tried one or two drugs each time. In this approach I put him under simultaneous given multifaceted treatment, include education and advises, motivational therapies, conditional therapy, and pharmacotherapies. And this situation revealed a faster and also more persistent result and this motivated the child and his family to complete the treatment course (for 4 months) without any relapse after completion this period. Conclusion: Our study shows that nocturnal enuresis, even primary monosymptomatic types, which are most common types of enuresis may need multi-faceted treatment to make child calm and his family comfort.
CONVERGÊNCIAS PARADIGMÁTICAS: EXPLORANDO O IMPACTO DO INTERACIONISMO SIMBÓLICO E NATURALISMO NAS METODOLOGIAS DE PESQUISA QUALITATIVA NO ENSINO SUPERIOR
Authors: Francisco Thiago Henrique Almino , Moser Giancarlo , Watanabe Melissa , Nunes Nei Antonio , Kanan Lilia Aparecida
Published: May 2024

Este trabalho explora a convergência do interacionismo simbólico com o naturalismo em estudos qualitativos dentro da educação superior. Investiga-se de que maneira essa fusão teórica enriquece a compreensão das dinâmicas no campo educacional, salientando tanto a construção de significados via interações humanas quanto a relevância do contexto natural onde essas interações se desenrolam. A importância desta pesquisa advém da sua contribuição para o aprimoramento de práticas pedagógicas que sejam inclusivas e alinhadas com as complexidades e diversidades do ensino superior. A metodologia é a revisão integrativa de literatura, que reúne pesquisadores de diversas áreas para compreender criticamente campos pouco explorados. Destacada por Whittemore e Knafl (2005), essa abordagem permite incorporar diferentes tipos de pesquisas, proporcionando uma visão completa do fenômeno estudado. Ao ressaltar a sinergia entre esses paradigmas, o objetivo é fomentar um debate mais aprofundado sobre metodologias de pesquisa educacional e incentivar o desenvolvimento de políticas educativas que valorizem as experiências individuais e coletivas no processo educativo e na gestão deste contexto.
TECNOLOGIA COMO FERRAMENTA DE INCLUSÃO: PROMOVENDO O LETRAMENTO EM DIFERENTES CONTEXTOS
Authors: Narciso Rodi , Alves Daiane de Lourdes , Lima Laise Katiane Alencar , Ramalho Ronildo de Andrade , Senário Flávia Fabiane Fernandes , Da Silva Jocely Gomes , Andrade Filho Marcos Antonio Soares de , Pereira João Alves
Published: May 2024

Este estudo abordou o papel transformador da tecnologia na promoção da inclusão e do letramento em contextos educacionais. O problema investigado centrou-se nos desafios e oportunidades associados à implementação de tecnologias inclusivas e ao desenvolvimento do letramento digital e crítico. O objetivo geral foi explorar como as tecnologias digitais podem ser utilizadas para superar barreiras educacionais e sociais, promovendo a inclusão e o letramento em diferentes contextos. A metodologia adotada consistiu em uma revisão bibliográfica sistemática de estudos relevantes na área, analisando-se tanto as iniciativas de sucesso quanto os obstáculos encontrados. Os resultados indicaram que, apesar dos desafios, como a desigualdade no acesso à tecnologia e a necessidade de formação docente, as tecnologias digitais oferecem potenciais significativos para criar ambientes de aprendizado mais inclusivos e para o desenvolvimento de competências críticas necessárias na sociedade da informação. As considerações finais ressaltaram a importância de políticas públicas efetivas e de iniciativas privadas para a promoção da inclusão digital e do letramento, destacando a necessidade de uma abordagem colaborativa entre diferentes setores da sociedade.
DESAFIOS CONTEMPORÂNEOS DO LETRAMENTO: O PAPEL DA TECNOLOGIA NA EDUCAÇÃO
Authors: Andrade Filho Marcos Antonio Soares de , Pereira Adonias Nonato da Silva , Saraiva Ana Cristina Gonçalves Teixeira , Catalano Thiago Henrique , Santana Aline Canuto de Abreu , Santos Rutierio Odorico dos , Gervásio Júlio César Belo , Nascimento Rogelma Coelho do
Published: May 2024

Este estudo abordou os desafios contemporâneos do letramento, com ênfase no papel da tecnologia na educação. O problema investigado centrou-se na forma como as tecnologias digitais transformam o letramento e quais são os principais desafios e oportunidades dessa transformação. O objetivo geral foi analisar o impacto das tecnologias educacionais no letramento digital, identificando barreiras e propondo soluções para sua integração efetiva no processo educativo. A metodologia adotada foi a revisão de literatura, focada na análise de estudos prévios relacionados ao letramento digital e ao uso de tecnologias na educação. Os resultados destacaram a importância da inclusão digital, da formação docente e do desenvolvimento de materiais didáticos digitais inovadores como elementos chave para superar os desafios identificados. As considerações finais enfatizaram a necessidade de uma abordagem na educação, que integre as tecnologias digitais de maneira fundamentada, visando promover um letramento digital inclusivo e empoderador.
Competencia digital docente: una revisión sistemática de la literatura
Authors: Luis Grados Carlos Alberto
Published: May 2024

Debido al brote del virus SARS-CoV-2, la dinámica de los entornos educativos ha experimentado una migración mayoritaria desde el ámbito presencial hacia el virtual, de ahí que haya sido necesario que los docentes se enfocaran en promover competencias digitales indispensables para enfrentar el fenómeno educativo en línea. Por ende, el presente artículo se enfoca en examinar las investigaciones relacionadas con las áreas de competencias digitales que deben desarrollar los docentes, así como en analizar las estrategias propuestas por instituciones formativas para fomentarlas. Para ello, se efectuó una revisión exhaustiva de artículos siguiendo las siguientes etapas: planificación de la búsqueda, ejecución y presentación del informe de revisión. En concreto, se consultaron bases de datos científicas reconocidas, como EBSCOHost, Scopus, Redalyc y SciELO. Los estudios revisados (veintiún artículos científicos) sostienen que las competencias digitales en los docentes adquieren una relevancia particular en sociedades altamente informatizadas. Por eso, instituciones como la Organización de las Naciones Unidas para la Educación, la Ciencia y la Cultura (Unesco), el Instituto Nacional de Tecnologías Educativas y de Formación del Profesorado (INTEF) y la Comisión Europea para la Educación proponen directrices para validar las competencias digitales en los educadores, las cuales son consideradas como puntos de referencia por parte de las instituciones formadoras para promover la transformación digital de la sociedad.
Os signos na leitura intersemiótica da obra de Adriana Varejão
Authors: Costa Marcia , Teixeira Níncia Cecília Ribas Borges
Published: May 2024

Com a chegada dos Estudos Culturais muitas oportunidades foram abertas para explorar espaços antes elitizados, como a academia, a arte e a própria cultura. As minorias passam a ganhar visibilidade e a produzir e consumir produções que antes eram restritas. Com isso, várias classes minoritárias, como as mulheres, podem mostrar e desenvolver seus trabalhos acadêmicos, artísticos e culturais, atravessando as fronteiras canônicas e possibilitando discursos das mais variadas esferas sociais. Para discordar do trabalho, focamos nossa análise na teoria da Tradução Intersemiótica, em que uma materialidade se converte em outra, no nosso caso, transpondo as artes plásticas para o texto, utilizando um estudo baseado nos signos e suas simbologias. A pesquisa verifica através dos signos, na obra Ama Divers, de Adriana Varejão, temas relacionados às mulheres.
Exploration and Characterization of Host Trees and Orchid Epiphyte Zones in Lore Lindu National Park, Central Sulawesi
Authors: Nasrun Muhammad Syaifuddin , Gailea Rosmaniar , Aminah Sitti
Published: May 2024

Host trees are vital for the survival of epiphytic orchids, providing necessary light and air circulation for optimal growth. Large trees with tall canopies contribute to the broader distribution of epiphytic orchids in forest areas. This research aimed to identify the characteristics of orchid host tree species in Lore Lindu National Park, considering both elevation zones and orchid growth zones. The research was conducted at various locations within the park, employing the field exploration survey method (cruise method). This method involved comprehensive exploration at each research site and establishing observation paths along pioneer lines, mainly where orchid host trees were found. The findings indicate the presence of 20 types of orchid host trees and 35 species of epiphytic orchids. The basal branching zone (Zone 3) was the most populated by epiphytic orchids on host trees, and the lowland forest was the elevation zone where most orchid host trees were found in Lore Lindu National Park, Central Sulawesi.
Keywords: host trees, Lore Lindu National Park, orchids, zone distribution
Persistent Global Burden of Stunting Among Children
Authors: Soliman Nada , Soliman Ashraf , Alyafei Fawzia , Elsiddig Sohair , Alaaraj Nada , Hamed Noor , Mohamed Shayma , Itani Maya
Published: May 2024

Introduction: Childhood stunting is a critical indicator of chronic undernutrition, reflecting global challenges in poverty, food security, and health care, with variability highlighting the multifaceted nature of nutritional well-being.
Objective: This study aims to provide a comprehensive overview of the global prevalence and trends of childhood stunting, elucidating the interplay of factors influencing its dynamics.
Methods: A systematic review and analysis of epidemiological studies, meta-analyses, and health reports were conducted to compile a detailed table on the worldwide prevalence and trends of childhood stunting.
Results: The collected data reveal a significant global burden of stunting, with notable disparities across regions, socioeconomic statuses, and age groups. Findings show a persistent high prevalence in regions like northwest Ethiopia and varied trends, with some areas achieving reductions in stunting rates due to effective interventions, while others witness stagnation or increases. Key associations were identified between stunting and factors such as low birth weight, socioeconomic status, and maternal health. The synthesis of recent studies indicates a critical ongoing public health challenge, particularly in Asia and Africa, where a significant proportion of children under five remain stunted.
Discussion: The study underscores the complex interplay of demographic, socioeconomic, and environmental factors influencing stunting, highlighting the essential role of targeted and multifaceted public health interventions in mitigating this pervasive issue.
Conclusion: Addressing childhood stunting necessitates a global commitment to integrated, evidence-based strategies focusing on the nutritional, health, and socio-economic determinants to ensure the well-being and growth of children worldwide.
Development of Powtoon Learning Media in Chemical Bonding Subject for Class X SMA/MA Equivalent Student
Authors: Yuhelman Nofri , Anggraini Septi , Putri Musdansi Dwi
Published: May 2024

This research on Powtoon learning media development aims to explain the feasibility of Powtoon media development in chemical bonding subjects for class X SMA/MA equivalent student. This type of research is development (Research and Development, RD) with 4D development models that include the Define (Definition), Design (Design), Development (Development), Disseminate (Deployment) stages. The data collection instruments used are through media expert validation sheets, material expert validation sheets, teacher response sheets and student response sheets. The data analysis technique used is to calculate the judgment percentage score of experts. Research results show that the developed Powtoon learning media met the valid category with presentation of 89,5% from 2 media experts, while that of the 2 material experts received an presentation of 86%. This learning media also met the good categories from 3 teacher response of 87.3% and of 10 students of 87.9%.
Aminokislotnyj profil' pri snizhennom ovarial'nom rezerve
Authors: Гависова А. А. , Шевцова М. А. , Львова П. О. , Бирюкова Д. А. , Ибрагимова М. Х. , Новоселова А. В. , Юшина М. Н. , Чаговец В. В. , Франкевич В. Е.
Published: May 2024

Snizhennyj ovarial'nyj rezerv (SOR) yavlyaetsya odnoj iz aktual'nyh problem reproduktivnoj mediciny i chasto associirovan s besplodiem i umen'sheniem effektivnosti programm EKO. Izmenenie metabolizma aminokislot mozhet igrat' rol' v patogeneze SOR kak proyavlenie epigeneticheskih narushenij v processah follikulo- i oogeneza. Cel'yu issledovaniya bylo proanalizirovat' izmeneniya metabolicheskih putej aminokislot v plazme krovi i follikulyarnoj zhidkosti i ocenit' ih klinicheskoe znachenie pri SOR. V issledovanie voshli 115 zhenshchin v vozraste 25–42 let c besplodiem. Gruppy byli sformirovany v zavisimosti ot ovarial'nogo rezerva i vozrasta. Vypolneno issledovanie urovnej aminokislot v plazme krovi i follikulyarnoj zhidkosti metodom vysokoeffektivnoj zhidkostnoj hromatografii s detektirovaniem na mass-spektrometre (VEZHKH-MS) i proveden bioinformaticheskij analiz ih metabolicheskih putej. Obnaruzheno statisticheski znachimoe izmenenie putej biosinteza fenilalanina, tirozina i triptofana (vliyanie = 0,5; p = 0,026), metabolizma alanina, aspartata i glutamata (vliyanie = 0,114; p = 0,013) i biosinteza arginina (vliyanie = 0,289; p < 0,001), igrayushchih rol' v processah follikulo-, oogeneza i embriogeneza. Obnaruzhennye razlichiya v soderzhanii aminokislot v razlichnyh biologicheskih zhidkostyah pozvolili razrabotat' modeli logisticheskoj regressii, podtverzhdayushchie SOR s veroyatnost'yu 88% po urovnyam aminokislot v follikulyarnoj zhidkosti (chuvstvitel'nost' — 88%, specifichnost' — 84%) i 82% po urovnyam v plazme krovi (chuvstvitel'nost' — 65%, specifichnost' — 91%). Eti rezul'taty mogut byt' ispol'zovany dlya dal'nejshih issledovanij patogeneza besplodiya pri SOR i vybora naibolee optimal'noj taktiki diagnostiki i lecheniya.
Implementation of Problem Based Learning on Critical Thinking to Increase Learning Outcomes and Student Activities
Authors: Ramadhana Gery Haris , Sutiani Ani
Published: May 2024

Learning is required to always be creative in presenting learning materials such as using learning models that can foster student’s enthusiasm in participating  learning process, so that students are happy and interested in exploring the lesson in the hope that their learning outcomes will be better. This study aims to (1) determine the increase in student learning outcomes taught with the Problem Based Learning model based on critical thinking is higher than the Direct Instruction model (2) to find out whether there is an influence of the Problem Based Learning model based on critical thinking on learning activities students on acid base material. From the results of the study, it was found that student learning outcomes in the experimental class were 77%, while those in the control class were 62%. The result of the difference in increasing learning outcomes between the two classes is 15%. From the t distribution data obtained t-table = 1.676 while based on calculations obtained price tcount = 3.73 means that Ho is rejected and Ha is accepted, based on this analysis means there is an influence of the Problem Based Learning model Learning based on critical thinking towards student learning activities on Acid-Base material.Pembelajaran dituntut untuk selalu kreatif dalam menyajikan materi pembelajaran seperti menggunakan model pembelajaran yang dapat menumbuhkan semangat siswa dalam mengikuti proses pembelajaran, sehingga siswa senang dan tertarik untuk mendalami pelajaran dengan harapan hasil belajarnya menjadi lebih baik. Penelitian ini bertujuan untuk (1) mengetahui peningkatan hasil belajar siswa yang diajar dengan model Problem Based Learning berbasis berpikir kritis lebih tinggi daripada model Direct Instruction (2) untuk mengetahui apakah ada pengaruh model Pembelajaran Berbasis Masalah berbasis terhadap berpikir kritis pada kegiatan belajar siswa pada materi asam basa. Dari hasil penelitian diketahui bahwa hasil belajar siswa pada kelas eksperimen sebesar 77%, sedangkan pada kelas kontrol sebesar 62%. Hasil selisih peningkatan hasil belajar antara kedua kelas sebesar 15%. Dari data distribusi t diperoleh t-tabel = 1,676 sedangkan berdasarkan perhitungan diperoleh harga thitung = 3,73 artinya Ho ditolak dan Ha diterima, berdasarkan analisis ini berarti ada pengaruh model pembelajaran Problem Based Learning berbasis berpikir kritis terhadap kegiatan belajar siswa pada materi Asam-Basa.
Development of Handout Android-Based Application on Buffer Solution using Discovery Learning Model
Authors: Agustina Agustina , Auliah Army , Hardin Hardin
Published: May 2024

Research and development aims to produce Handout Buffer Solution on a quality Android Application. Quality is seen based on the validity, practicality, and effectiveness. Based Buffer Solution Handout Refers to the ADDIE (Analysis, Design, Development, Implementation, and Evaluate) development model. The instruments used for validity are validation sheets by theory experts and media experts, practicality teacher response questionnaires and students, and the effectiveness of the learning outcomes test. The results of the research show: 1) the validity of the Handout from the theory expert 3.65 and the media expert 3.58 with a very valid category, 2) the average percentage of practicality of the handout based on the teacher's response questionnaire equal to 91% and 87.58% of students in the very practical category, 3) the valid handouts that fulfill the effective criteria (≥ 85%) based on the achievement of class completeness with a percentage of 86.1 %. Thus, it can be concluded that the Handout Buffer solution Based on Android Application development with the ADDIE Model is very valid, very practical, and effective for use in the learning process.
Innovative Project-Based Learning Resources to Develop Critical Thinking Skills of Students in Basic Chromatography Instruction
Authors: Simalango Meilin , Situmorang Manihar
Published: May 2024

Abstract:        This study is a Research and Development (R&D) aimed at developing project-based innovative learning resources in the form of E-LKM on the topic of Chromatography with the goal of assessing its effectiveness in improving critical thinking skills and students' learning outcomes. The development method used is the ADDIE model with 3 cycles of implementation stages. The development results indicate that the project-based E-LKM has an average total feasibility score of BSNP = 3.85, categorized as very feasible, and an N-gain score of 0.72, equivalent to a percentage of 72%, indicating high effectiveness. During field trials, there was an increase in the average scores M4 > M3 > M1, indicating an improvement in students' abilities in the Chromatography teaching process. Hypothesis testing results show a significant difference between students' learning outcomes before and after using the developed project-based innovative learning resources. Additionally, based on the correlation calculation between critical thinking skills and students' learning outcomes, it was found that there is a significant positive correlation. Thus, it can be concluded that project-based innovative learning resources are effective in improving students' learning outcomes, and there is a correlation between critical thinking skills and students' learning outcomes in the context of teaching chromatography.Keywords:      Innovative Learning Resources, E-LKM (Electronic Learning Module), PjBL (Project-Based Learning), Critical Thinking Skills, Chromatography.
The Effect of E-Module on Activity and Learning Outcomes on Electrolyte and Nonelectrolyte Solutions
Authors: Damanik Nova , Riris Ida Duma , Sitorus Marham , Sihombing Junifa Layla , Syafriani Dewi
Published: May 2024

This research aims to determine activities, learning outcomes and the correlation between activities and student learning outcomes taught using the Project Based Learning (PjBL) learning model assisted by e-modules for class X SMA on electrolyte and non-electrolyte solutions. The population in this study were students of class This research uses test and non-test instruments in the form of student learning activity observation sheets which have been tested and are valid. The data obtained were tested for normality and homogeneity. Based on the results of data processing that has been analyzed, there are learning outcome values tcount = 9.714 and ttable = 1.66, the activity obtained is tcount = 6.069 and ttable = 1.66. Where tcount>ttable shows that Ha is accepted and H0 is rejected, so it can be concluded that there is an influence of the Project Based Learning (PjBL) learning model assisted by e-modules for class X SMA on electrolyte and non-electrolyte solutions. The correlation test was carried out to determine the significant correlation between activities and student learning outcomes. The research results show that rcount > rtable (0.929 > 0.329) so H0 is rejected. Thus, there is a significant correlation between activities and student learning outcomes assisted by e-modules for class X SMA on electrolyte and non-electrolyte solutions.
Application of STEM-based LKPD on Reaction Rate Material to Improve Students' Critical Thinking Ability
Authors: Rahmah Aulia , Sugiharti Gulmah
Published: May 2024

The use of STEM-based LKPD can improve students' critical thinking skills. In this study, non-test instruments such as validation questionnaires and test instruments with 5 aspects of critical thinking were used. This study aims to 1) measure the validity of the developed LKPD; 2) determine students' responses to the developed LKPD; 3) determine the improvement of students' critical thinking skills; 4) determine whether students' critical thinking skills on the use of STEM-based LKPD developed better than without using STEM-based LKPD. Data collection techniques through BSNP questionnaire, student response questionnaire and N-Gain test for critical thinking improvement and right-sided t test. The samples were 70 students of class XI F1B and XI F2D who were randomly selected. Based on the material and media expert validators, it shows that 94.34% of the material experts and 87.5% of the developed LKPD media experts have a very high interpretation and the level of validity is "Very valid". While 87.27% of student responses were rated "Very good" for use in learning the topic of reaction rates. The N-Gain test results showed the gain of the experimental class taught using STEM-based LKPD was 0.81 while the control class gain without STEM-based LKPD was 0.71. The t-test showed tcount=3.276> table=1.667. Thus it can be concluded that the use of STEM-based LKPD is very good in lectures on the topic of reaction rate.
Application of POE Based Module in Reaction Rate Material to Improve Students' Critical Thinking Abilities
Authors: Saragih Agnes Florida Patricia , Sugiharti Gulmah
Published: May 2024

The use of teaching materials in schools is one of the supports in the learning process. Modules are teaching materials that students can use in learning. This research aims to 1) Determine the level of validity of the module being developed; 2) Knowing the increase in students' critical thinking abilities taught with the modules developed; 3) Knowing students' responses to the modules being developed. The research method is R&D with the 4D development model. Data collection techniques through BSNP questionnaires, student response questionnaires and N-Gain tests to improve critical thinking. The population was Holy Kids Bersinar Medan High School. Based on material and media expert validators, it shows that 84.7% of material experts, 83.75% of media experts, the modules developed have a validity level of "Very valid". The module was also successful in improving students' thinking abilities through pretest and posttest scores that were carried out and the n-gain was searched for and obtained a score of 0.83% in the "High" category. Student responses to the development of this module received score of 93.05 in the "Very Good" category. Thus, it can be concluded that the use of POE-based chemistry modules has been successful in improving students' critical thinking abilities.
Implementation PhET Virtual Laboratory-Based Learning Media to Increase Learning Outcomes on Teaching of Acid-Base
Authors: Pardosi Ijayanti , Situmorang Manihar
Published: May 2024

Chemistry learning contains abstract concepts that require understanding through three levels of representation. So that innovative learning media is needed that supports the achievement of concepts learned in chemistry, especially in acid-base material. This research aims to develop and implement PhET virtual laboratory-based learning media to build student activeness in learning and improve student learning outcomes in learning the topic of Acid-Base. The use of this innovative learning media is supported by a project-based learning model. This research was conducted by research and development (RnD) with the procedures of define, design, development, and implementation. The research includes the development of PhET laboratory-based learning media, standardization of learning media, and implementation to students in class XI MIPA SMA Negeri 5 Medan, SMA Negeri 1 Habinsaran and SMA Negeri 1 Borbor in sample classes, namely Control class and Experiment Class. The feasibility of the learning media measured 87.06% with a very feasible category. The results of the media implementation can be seen in the N-gain value in the experimental class higher than the control class with a value at SMA Negeri 5 Medan 60.9%, SMA Negeri 1 Habinsaran 68.69%, and SMA Negeri 1 Borbor 67.03% with each in the effective category.
Analysis of The Need for Chemical Learning Media Based on Local Wisdom in Sitaro Islands
Authors: Purba Leony Sanga Lamsari , Tamansa Santhya Anaomi , Peronika Riska Yuna , Simaoju Amsal Sukhendy , Harefa Ikerman Jaya
Published: May 2024

In the era of technology that continues to develop rapidly, students' needs for technology-based chemistry learning media are increasingly urgent. However, it cannot be denied that local wisdom also plays an important role in education. This research aims to analyze the needs of SMA MIPA students in Sitaro Regency for chemistry learning media based on technology and local wisdom. The research method used is quantitative descriptive. The results of data analysis show that the average score for all statement items is 3.99 on a Likert scale (maximum score 5), meaning that students generally agree with the use of learning media based on local wisdom. Further analysis shows that there is a significant difference (sig 0.05) in the perceptions of female and male students. Female students have a higher perception regarding the importance of using learning media based on local wisdom in learning chemistry. Likewise, students in classes X, XI, and XII showed differences in student perceptions (sig 0.05). Class XII students (4.01) have a higher perception than class XI students (3.98) and class X (3.97). Based on this research, it was concluded that SMA MIPA students in Sitaro Regency need chemistry learning media based on local wisdom.
Inquisitive Ability on Chemistry Material Gamification with Project Based Learning Approach
Authors: Tamansa Santhya Anaomi , Harefa Nelius , Tamba Riris Marito
Published: May 2024

This study aims to evaluate the use of gamification in increasing students’ inquisitive ability on chemistry material with project based learning approach. In this research, an analysis of students' inquisitive ability will be carried out which consists of three indicators, namely wondering and questioning, exploring and investigating, and challenging assumption. The research was carried out using a classroom action research approach consisting of 3 cycles, where research data was collected by giving a questionnaire consisting of 4 statements for each indicator with 5 options for each research instrument. Apart from the questionnaire method, research data was collected through random interviews and structured observation. Based on data analysis, students' inquisitive ability was highest in the wondering and questioning indicator at 83.68 in cycle 3. Meanwhile, students' inquisitive ability was lowest in the challenging assumptions indicator at 41.25 in cycle 1. In general, gamification activities were able to increase students' inquisitive ability between 9% - 50%.
Penyuluhan Pengendalian Organisme Pengganggu Tanaman Kentang Berwawasan Lingkungan Di Balai Penyuluhan Pertanian Pangalengan, Kabupaten Bandung
Authors: Sunarto Toto
Published: May 2024

Kecamatan Pangalengan merupakan salah satu sentra produksi kentang di Jawa Barat.  Kelompok tani kentang di Kecamatan Pangalengan sebagian besar sebagai penangkar benih kentang.  Permasalahan yang dihadapi oleh kelompok tani kentang adalah produksi kentang menurun karena terdapat serangan OPT (Orgsnisme Pengganggu Tanaman).  Berdasarkan observasi, pengendalian OPT pada tanaman kentang yang dilakukan oleh petani umumnya masih menggunakan pestisida kimia yang berdampak negatif terhadap lingkungan.Dalam rangka mendukung upaya pengembangan produksi benih kentang berkualitas dan penanganan OPT kentang, Fakultas Pertanian Universitas Padjadjaran bekerjasama dengan Direktorat Perlindungan Hortikultura Tahun 2023 mengadakan bimbingan teknis “Pengelolaan OPT kentang ramah lingkungan” di Balai Penyuluhan Pertanian Pangalengan.  Kegiatan pengabdian kepada masyarakat ini menggunakan metode pendidikan (penyuluhan) kepada kelompok tani kentang, dan PPL (Petugas Penyuluh Lapangan) di wilayah Kecamatan Pangalengan, Kabupaten Bandung. Pengabdian kepada Masyarakat ini bertujuan untuk menambah wawasan bagi kelompok tani kentang dan PPL tentang pengendalian OPT kentang yang ramah lingkungan. Hasil kegiatan pengabdian kepada masyarakat ini, menunjukkan bahwa terdapat peningkatan pengetahuan kelompok tani kentang dan PPL tentang cara pengendalian OPT kentang yang ramah lingkungan
Studi tentang Ideologi Childfree pada Perempuan Dewasa yang Belum Menikah
Authors: Annisa Maulin , Ninin Retno Hanggarani
Published: May 2024

Penelitian ini bertujuan untuk mengetahui ideologi childfree pada perempuan yang belum menikah dari segi psikologis. Ideologi childfree pada perempuan yang belum menikah dapat diartikan sebagai pilihan hidup untuk tidak memiliki anak, baik di masa sekarang maupun di masa depan. Pilihan ini bukan berarti perempuan tersebut tidak menyukai anak, melainkan mereka memiliki alasan-alasan tertentu yang mendasari keputusannya. Penelitian ini menggunakan pendekatan kualitatif dengan convenience sampling sebagai teknik pengambilan sampel. Partisipan penelitian merupakan dua perempuan dewasa yang belum menikah serta memiliki pilihan untuk childfree. Data dikumpulkan melalui wawancara mendalam dengan pedoman wawancara yang telah disusun berdasarkan komponen ideologi childfree, yaitu individualis, feminis, dan pesimis. Analisis data menunjukkan bahwa pilihan childfree pada perempuan dewasa yang belum menikah merupakan hasil dari berbagai faktor, baik internal maupun eksternal, seperti trauma masa kecil, pola asuh orang tua, kondisi ekonomi, serta kondisi kesehatan mental dan fisik yang tidak ingin diturunkan kepada keturunan selanjutnya. Penelitian ini menunjukkan bahwa ideologi childfree pada perempuan dewasa yang belum menikah merupakan fenomena kompleks yang dipengaruhi oleh berbagai faktor individual, sosial, dan budaya.
Um resgate à memória!
Authors: Ifanger Fernanda Carolina , Laurentiis Lucas Catib
Published: May 2024

Apresentamos à comunidade acadêmica mais uma edição da Revista de Direitos Humanos e Desenvolvimento Social, vinculada ao Programa de Pós-Graduação em Direito da Pontifícia Universidade Católica de Campinas. Nesta edição da RDHDS contamos com um Dossiê especial em homenagem ao saudoso jurista José Henrique Pierangeli, que recebeu artigos sobre as temáticas de Direito Penal, Processo Penal, Criminologia, Política Criminal e Direitos Humanos.
Enhancing private infrastructure financing through capturing spillover effect: Conceptual development and an empirical case study of Vietnam’s expressways
Authors: Yoshino Naoyuki , Abe Masato , Thi Truong Hoa
Published: May 2024

While infrastructure provides necessary public services and is vital for the socio-economic development of a nation, public funds alone cannot finance all infrastructure needs in society, especially after the COVID-19 pandemic, where many countries are facing budget deficits. Although private financing schemes, such as public-private partnerships (PPPs) and land value capture, have been considered intensively, they have yet to produce adequate private capital flows to infrastructure projects due to a lack of incentives for private investors. Against the background, this paper proposes a new financing mechanism in which governments might divert some of the increased tax revenue from the spillover effects of newly constructed infrastructures to fund the private sector through grants or subsidies. The empirical work in Vietnam shows a significant increase in tax revenues after completing two expressways, supporting our idea about spillover effects, which includes small- and medium-sized enterprise (SME) development. This study’s results suggest that spillover effects can bring new opportunities for governments and multilateral development banks (MDBs) to implement infrastructure projects with greater private sector involvement in the region. It also proposes some financial schemes, such as land capture and financing for business startups, including SMEs, to enhance the spillover effects of infrastructure.
Significant Effect Of Amended Soil On Microbial Flora Of Soil And Plant Growth In Comparison With Natural Low Nutritive Soil
Authors: Imad Saima , Rafique Tahir , Shaikh Shagufta A. , Shafiq Sheraz , Sohail Munazza
Published: May 2024

Soil chemical properties, such as Carbon and Nitrogen levels, are crucial for fulfilling the basic needs of plants. The presence of secondary and tertiary nutrients plays a vital role in constructing soil structure, influencing the survival of normal microbial flora, seeds, and later plant growth. The use of chemical fertilizers addresses nutritional deficiencies, but reports indicate that only 40% is utilized by plants, leading to soil issues like salinity and drought logging. When soil lacks essential nutrients, external amendments are necessary, impacting plant growth and crop yield by enhancing normal microbial flora i.e. Plant growth-promoting rhizobacteria (PGPRs). Recognizing the significance of both chemical nutrients and physical properties for healthy plant growth, a soil amendment called "Fertisol soil" was developed. This involved adding basic and secondary nutrients to the soil. The amended soil underwent analytical characterization and was compared with natural soil through chemical analysis and microbial growth assessments. Comparative studies using the amended soil showed improved plant growth and flowering capacity compared to control plants in terms of height and flowering. This highlights the positive impact of balanced nutrient amendments on soil health and overall plant performance.
Effect of Matrix Type on Properties of Moulding Sand with Barley Malt
Authors: Samociuk B. , Nowak D. , Medyński D.
Published: May 2024

The aim of the following work was to determine the possibility of using barley malt as a binder in moulding sands technology. The moulding sands prepared on the basis of three kinds of sands, i.e. quartz, olivine and chromite sands were analyzed. In order to determine the properties of moulding sands, typical determinations were made, i.e. moisture content, flowability, permeability, strength properties and abrasion wear. The obtained results indicate that it is possible to use barley malt as an independent binder for masses made of quartz, olivine and chromite sands.
Analysis of Influence of Sand Matrix on Properties of Moulding Compounds Made with Furan Resin Intended for 3D Printing
Authors: Gruszka D.R. , Dańko R. , Dereń M. , Wodzisz A.
Published: May 2024

Binder jetting (BJ) sand printing is a 3D printing process in which a sand mould or sand core is produced from an STL file. A single layer of a sand matrix consisting of one or more grains in height of sand is applied to a worktable, and then a liquid resin or binder is applied to bond the grains together. This process is repeated until the final result matches the CAD model. The sand matrix is the main component of ceramic cores and moulds. The present study aims to demonstrate the influence of the matrix used on the properties of the resulting moulding sand. Three types of sand matrices were selected for the study. The first was a quartz matrix for 3D printing with binder jetting; this is characterised by a sharp geometry that allows for proper layering during printing. Ordinary quartz sand was also used for the study; this type of sand is usually used for the production of sand cores in the hotbox process, among other things. The shape of this sand is irregular. The last matrix to be tested was Cerabeads sand; this was selected because its spherical geometry clearly distinguishes it from the other two matrices. The matrices were analysed for their grain sizes. Scanning electron microscope images were also taken to compare the geometries and chemical compositions of the respective matrices. In presented research utilises a sand matrix for the production of self-curing compounds with furan resin dedicated for binder jetting 3D printing. The moulding masses were produced in a laboratory circulation mixer. The laboratory moulds were produced with wooden core boxes and pre-compacted by vibration. The samples from the matrix for the 3D printing were produced using the binder jetting method. The samples were produced to determine the flexural strength, tensile strength, gas permeability, hot distortion, and apparent density. It was not possible to carry out tests for the Cerabeads sand, as the obtained moulds were too brittle to perform adequate tests. Tests with the other matrices have shown that the shape and size of the matrix affect the apparent density and gas permeability.
The Analysis of Influence of Compression Forces on the Strength of MM „Stahl 1018” Composite with the use of SolidWorks
Authors: Arustamian A. , Kalisz D.
Published: May 2024

Composite Multimetal Stahl 1018 has been used in the process of preserving worn surfaces of materials operating in extremely difficult conditions. This work presents the results of simulation of the mechanical properties of steel samples in contact with the MM "Stahl 1018" composite. Tests were carried out for various models with with one- and two-sided contact sample models with the composite. Theoretical tests were conducted in the "SolidWorks 2019" environment. It was found that the maximum strength of the specimen layer made of MM "Stahl 1018" material, which closely adheres to the surfaces of steel bases on both sides (444 MPa) is higher than that of the material layer in one-sided contact (358 MPa), for specimens with a height of 4.5 mm and at 80 °C. Simulations also revealed a significant increase in the maximum stress in the composite MM "Stahl 1018" for specimens in the so-called free state from 285 MPa to 358 MPa with the increasing temperature from 20 °C to 80 °C, for specimens 4.5 mm high.