bluuebunny/crossref_metadata_2025 huggingface dataset:
SISTEM PENUNJANG KEPUTUSAN PEMILIHAN SUPPLIER DI TIA PET SHOP DENGAN METODE (SAW)
Authors: Rani Maha , Ardiansyah Ricki , Agusti Anatia , Erdriani Deby , Husna Nikmatul
Published: January 2022

Abstract: The goal to be achieved in this research is a decision support system that can provide support to decision makers in determining the supplier to be selected. The decision support system made using the Simple Additive Weighting (SAW) method in processing the data. Based on the results of data processing and information obtained, the decision support system made was successful in giving preference and ranking of suppliers in accordance with the criteria given by the decision maker. In selecting suppliers at Tia Pet Shop, the criteria used are quality, average price, packaging and speed of delivery.            Keywords: Decision Support System; Simple Additive Weighting; Supplier;  Abstrak: Tujuan yang ingin dicapai dalam penelitian ini yaitu sebuah sistem penunjang keputusan yang dapat memberikan dukungan kepada pembuat keputusan dalam menentukan supplier yang akan dipilih. Sistem penunjang keputusan yang dibuat menggunakan metode Simple Additive Weighting (SAW) dalam melakukan pemprosesan datanya. Berdasarkan hasil pengolahan data dan informasi yang didapat sistem penunjang keputusan yang dibuat berhasil memberikan preferensi dan perangkingan supplier sesuai dengan kriteria yang diberikan oleh pembuat keputusan. Dalam pemilihan supplier di Tia Pet Shop kriteria yang digunakan yaitu kualitas, harga rata-rata, pengemasan dan kecepatan pengiriman.  Kata kunci: Simple Additive Weighting; Supplier; Sistem Penunjang Keputusan
PENGEMBANGAN SISTEM INFORMASI EVALUASI LAYANAN AKADEMIK UNTUK INSTITUT TEKNOLOGI KALIMANTAN
Authors: Eliviani Rosa , Atrinawati Lovinta Happy , Fiqar Tegar Palyus
Published: January 2022

Abstract: Higher Education can exercise management autonomy, that is to evaluate using an information system independently. The case study taken in this study is the Kalimantan Institute of Technology (ITK). So far, ITK has used a survey information system to evaluate ITK, but the information system is static so that it is not following the current needs of ITK. Based on that, this research is developing an evaluation information system at ITK so that this information system is expected to be able to monitor and evaluate the process of activities at ITK. The method used is the waterfall model. Based on the waterfall method, the methodology used in this research is start from the identification of the problem, then study the literature and enter the system building stage, namely the analysis, design, implementation and testing stages, as well as conclusions and suggestions. The results obtained are in the form of an information system for evaluating academic activities and services that have been approved by ITK on the http://evaluasi.itk.ac.id page.            Keywords: evaluation; information system; ITK  Abstrak: Perguruan Tinggi memiliki kemampuan untuk melaksanakan otonomi pengelolaan yaitu dievaluasi secara mandiri menggunakan sistem informasi. Studi kasus yang diambil pada penelitian ini adalah Institut Teknologi Kalimantan (ITK). Selama ini ITK telah menggunakan sistem informasi survey untuk mengevaluasi ITK, namun sistem informasi tersebut bersifat statis sehingga telah tidak sesuai dengan kebutuhan ITK saat ini. Berdasarkan hal itu, penelitian ini adalah mengembangkan sistem informasi evaluasi di ITK sehingga diharapkan sistem informasi ini dapat memantau dan mengevaluasi proses kegiatan di ITK. Metode yang digunakan adalah waterfall model. Berdasarkan metode waterfall tersebut, maka metodologi yang digunakan pada penelitian ini dimulai dari identifikasi masalah, kemudian studi literatur dan memasuki tahap membangun sistem yaitu tahap analisis, desain, implementasi dan pengujian, serta kesimpulan dan saran. Hasil penelitian yang diperoleh adalah berupa sistem informasi evaluasi kegiatan akademik dan layanan yang telah disetujui ITK di halaman http://evaluasi.itk.ac.id. Kata kunci: evaluasi; sistem informasi; ITK
Perfil epidemiológico dos acometidos por hanseníase em três estados da região Nordeste do Brasil
Authors: Marquetti Caroline Paula , Sommer Jussara Alves Pinheiro , Silveira Eliane Fraga da , Schröder Nádia Teresinha , Périco Eduardo
Published: January 2022

Objetivo: Descrever o perfil epidemiológico dos acometidos por hanseníase na Região Nordeste do Brasil. Método: Estudo ecológico, descritivo, retrospectivo, construído a partir da análise de dados secundários sobre a hanseníase registrados na Região Nordeste, no período de 2013 a 2017. Os dados foram obtidos do Sistema Informatizado de Dados das Notificações de Hanseníase (DATASUS) e do Sistema de Informação de Agravos de Notificação (SINAN). A partir dos dados, foi calculada a frequência absoluta, a taxa de incidência, a prevalência e a taxa de incremento anual (TIA) (p ≤ 0,05). Resultados: Foram diagnosticados 180.019 casos novos de hanseníase no Brasil, e a Região Nordeste apresentou 77.669 novos casos, representando 43,13% do total. Em relação ao perfil dos indivíduos acometidos, a maioria é do sexo masculino e com faixa etária entre 30 e 49 anos. A forma virchowiana foi a prevalente no Maranhão (55,8%); e a dimorfa, na Bahia (34,7%) e em Pernambuco (34,3%). Analisando a TIA, nos estados da Região Nordeste, observa-se estabilidade das taxas de prevalência em Pernambuco e na Bahia e declínio no Maranhão. Conclusão: Os três estados analisados não atingiram as metas para redução de detecção de novos casos nem redução nos casos de Grau II. As variáveis sociodemográficas dos portadores apontam a manutenção de desigualdades socioeconômicas que impactam na qualidade de vida dos portadores. Essa investigação poderá contribuir com o desenvolvimento de políticas públicas para a promoção da saúde da população afetada. Salienta-se a importância de outros estudos que aprofundem a investigação no Maranhão, que se mantém com números elevados da doença.
Plantas medicinais e fitoterápicos regulamentados no Brasil: risco de toxicidade por metais pesados
Authors: Alves Junior Ademir da Silva , Melo Elaine Silva de Pádua , Gondim Jacqueline Marques da Silva , Nascimento Valter Aragão do
Published: January 2022

Plantas medicinais acumulam metais pesados e metaloides em sua estrutura e em seus metabólitos secundários. Entretanto, quando a população consome essas plantas para o tratamento ou prevenção de diferentes doenças, sem o devido controle de qualidade e quantificação de metais pesados, pode estar se expondo a riscos de toxicidade devido a ingestão de elementos químicos que estão acima dos limites seguros para o consumo humano. Esse estudo de revisão narrativa teve por objetivo descrever as regulamentações relativas ao controle de metais pesados em plantas medicinais e fitoterápicos e destacar os riscos de metais pesados quantificados em plantas medicinais, com ênfase nas espécies compreendidas na Relação de Plantas Medicinais de Interesse ao Sistema Único de Saúde Brasileiro (RENISUS), que possuem Informações Sistematizadas. De acordo com os resultados obtidos, observamos que as Informações Sistematizadas da RENISUS não consideram as informações relativas a metais em plantas medicinais, mesmo havendo dados publicados. Nesse sentido, destacamos que é necessário o monitoramento periódico de metais pesados e a fiscalização de plantas medicinais sob a forma de drogas vegetais, com o intuito de mitigar a vulnerabilidade da população que consome esses produtos procurando benefícios à saúde com base na fitoterapia.
Potential agrifood application of seriguela (Spondias purpurea L.) residues extract and nanoZnO as antimicrobial, antipathogenic and antivirulence agents
Authors: Carnaval Luana de Souza Cavalcante , Cerboneschi Matteo , Tegli Stefania , Yoshida Cristiana Maria Pedroso , Melo Enayde de Almeida , Santos Andrelina Maria Pinheiro
Published: January 2022

The impact of phytopathogenic microorganisms in several crops causes significant losses in agrifood industry, spoilage throughout food chain and storage. Nanoparticles and plant extracts have been highlighted by their antimicrobial properties applied in food packaging, agriculture, drug delivery systems and other medical approaches. Over the past few years, this group have studied the application of ZnO nanoparticles and agroindustrial wastes in edible food coatings/films. This study aimed to evaluate active characteristics from the extract of seriguela processing wastes and nanoZnO regarding to their inhibitory activity against bacterial pathogenicity and virulence systems TTSS (Type Three Secretion System) and QS (Quorum Sensing) for Pseudomonas savastanoi. Also, antibacterial action (inhibition area) against species of Curtobacterium, Clavibacter, E. coli, Xanthomonas and Serratia, and antifungal against Botrytis cinerea (reduction in colony size). The 60% extract inhibited the activation of QS and TTSS system in 20.26% and 13.54%, respectively; while nanoZnO at 3% reduced 46.77% QS and increased 302.88% TTSS. Extract without dilution inhibited the growth of Clavibacter michiganensis pv michiganensis (Gram-positive) and Xanthomonas phaseoli (Gram-negative), inhibitory zone of 94.25 mm2 and 452.39 mm2 respectively. The latter also being inhibited by nanoZnO 1 and 2% (138.23 mm2) and 3% (275.67 mm2). Pure extract inhibited 17.38% growth of fungal colony and nanoZnO (1 and 3%) in 33.08%. Finally, the active agents studied showed to be promising in the prevention of phytopathogenic diseases and consequently economic losses, food films/coatings and the extract as a biopesticide, reducing the environmental impact.
Educação a distância durante a pandemia do COVID-19: percepção docente, qualidade de vida e ansiedade entre professores universitários de Minas Gerais, Brasil
Authors: Caldas Lucas Rogério dos Reis , Teles Maria Cecília , Guimaraes Aellanene Luiz Rosa , Sousa Josemara Fernandes Guedes de
Published: January 2022

A pandemia COVID-19 gerou uma série de mudanças no formato da educação. Este estudo teve como objetivo verificar os efeitos da transição da educação presencial para a online na qualidade de vida e na ansiedade de professores brasileiros. Oitenta professores responderam remotamente, questionários para caracterizar a amostra, percepção do ensino online, qualidade de vida e ansiedade. Os resultados indicam a existência de indicadores de concordância sobre o conhecimento para ensinar online, na necessidade de modificar a metodologia de ensino e que a educação online é mais estressante. Indicadores de discordância de que a educação online é o futuro do ensino superior e que os alunos aprendem mais neste modelo. Na avaliação da qualidade de vida, os homens apresentaram melhores escores nos domínios vitalidade, aspecto social, limitação pelo aspecto físico e saúde mental. Indivíduos que não apresentam comorbidades apresentaram melhores escores para capacidade funcional, dor e estado geral de saúde. O grupo em isolamento social apresentou menor pontuação nos aspectos sociais. A ansiedade-estado foi maior do que a ansiedade-traço. Os níveis de ansiedade foram influenciados pelo tempo de isolamento e apresentaram correlação negativa com a qualidade de vida. A transição do ensino a distância afetou a percepção do ensino, a qualidade de vida e a ansiedade dos professores brasileiros.
Diversity of anura amphibians in an anthropic lake in the state of Paraíba, Brazil: distribution and temporal variation
Authors: Silva Leomyr Sângelo Alves da , Vieira Layze Cilmara Alves da Silva , Chaves Marcio Frazão
Published: January 2022

The Caatinga is highly heterogeneous, many species being found in their regions. Much of anurofauna this area is commonly found in many open environments. In the present study both the diversity and the temporal occurrence of frogs were determined to Bela Vista Lagoon, located in the municipality of Cuité, Paraíba. 4 areas for sampling were marked, these being covered slowly by hiking. The naturalistic observations were conducted from May 2012 until April 2013 Methods of visual and auditory search were used to simultaneously capture and frequency of species. 6 frog species belonging to 4 genera were found distributed in three families: Bufonidae (2 species), Hylidae (2 species) and Leptodactylidae (2 species). Site 1 showed a wealth of three species, the other areas had a wealth equivalent of 5 species each. The anurofauna recorded high occupancy presented to water bodies and low associations zones altered by man. Nonparametric estimators, calculated for the 36 surveys for the pond Bela Vista, not reached its asymptote, but the Bootstrap model showed a tendency toward stabilization. Among the four sampled areas, Area 2 was the one with the highest diversity, areas 3 and 4 presented the lowest diversity, this fact being related to high dominance of species Rinnella jimi. Regarding the temporal distribution, amphibians showed up influenced by temperature and rainfall record for the region.
Controle do Processo TCPSD para Separação da Mistura Acetonitrila/Benzeno/Metanol
Authors: Guimarães Lucas de Melo Jurema , Ramos Wagner Brandão
Published: January 2022

Visando uma maior economia em custos operacionais, a inclusão de correntes de reciclo e integrações térmicas são rotineiras nos processos químicos, gerando a necessidade de estruturas de controle mais robustas, capazes de impedir perdas devido a distúrbios rotineiros e proporcionar segurança operacional. A separação via Triple-Column Pressure-Swing Distillation (TCPSD) pode ser utilizada para separar diferentes solventes da indústria de química fina, e devido ao grande número de variáveis envolvidas, juntamente a integrações térmicas e correntes de reciclo, a definição de uma estrutura de controle eficaz se torna um problema complexo. Neste contexto, este trabalho tem como principal objetivo o desenvolvimento e avaliação de estruturas de controle plantwide para o processo TCPSD, utilizado para separação da mistura acetonitrila/benzeno/metanol. Utilizando os softwares Aspen Plus© e Aspen Plus Dynamics©, foram avaliadas duas estruturas de controle, nas quais as composições dos produtos são controladas por inferência, através do controle da temperatura de pratos sensíveis. A principal diferença entre as duas estruturas é que a Estrutura de Controle 1 possui uma malha de controle de soma dual de temperatura de pratos sensíveis na coluna de baixa pressão, manipulando a razão de refluxo. Ao avaliar os resultados das composições dos produtos ao atingir estado estacionário e valores de ISE, concluiu-se que ambas as estruturas são capazes de controlar distúrbios do tipo degrau na vazão e composição de alimentação do processo. Contudo, observaram-se melhores resultados na Estrutura de Controle 1.
Uso de tecnologias educacionais do plano de parto junto às gestantes: revisão integrativa de literatura
Authors: Santos Aline Ost dos , Cogo Silvana Bastos , Sehnem Graciela Dutra , Monteiro Amanda Suélen , Dallabrida Giovana Sangiogo , Scopel Mariana Ferreira
Published: January 2022

Objetivo: Analisar as evidências científicas disponíveis na literatura sobre o uso de tecnologias educacionais do plano de parto junto às gestantes. Metodologia: Trata-se de uma revisão integrativa de literatura e optou-se por buscar na Scielo, Literatura Latino-Americana e do Caribe em Ciências da Saúde, Base de Dados de Enfermagem, ScieVerse  Scopus e PubMed. A coleta de dados ocorreu de abril a agosto de 2021. A estratégia PICOT foi usada para a seleção da pergunta norteadora: Quais as evidências científicas disponíveis sobre a utilização de tecnologias sobre o plano de parto junto às gestantes? Como critérios de inclusão utilizaram-se produções científicas realizadas na temática da revisão, artigos completos, modalidade original, publicados em português, espanhol e inglês, sem recorte temporal. Foram excluídas as publicações com apenas resumo, sem a delimitação adotada no questionamento, reflexões, resenhas, editoriais, revisões da literatura, dissertações e teses. Os estudos repetidos foram contabilizados apenas uma vez. Resultados: Identificaram-se 15 estudos com evidências N1, N2, N3, N4, N6. Conclusão: O uso de tecnologias sobre o plano de parto junto às gestantes ainda é incipiente as tecnologias educacionais estão cada vez mais presentes no cotidiano tais como: vídeo educativo, aplicativos, mensagens de texto, plano de parto, objeto de aprendizagem virtual, exposição artística, documento de recusa de procedimentos, decisões baseadas em Web, roda de conversa e folheto.
Analysis Of KKGO Muncar Athlete Achievement Based on Physical Condition Level and Anthropometry
Authors: Candra Arya T , Farhanto Galih
Published: January 2022

Achieving an optimal performance is one way for athletes to demonstrate the ability and quality of performance in a sport. Physical condition is the coverage of several indicators related to human physical abilities which directly contribute to the physical activity ability of an athlete. In addition, anthropometry is also a determining factor for the success of athletes in achieving an achievement. The purpose of this study was to determine and provide evidence in the form of scientific data from the results of research related to the physical condition and anthropometry levels of athletes, because these 2 indicators greatly influence the achievement of athletes. This type of research is descriptive quantitative, using a survey method with test and measurement instruments. The samples in this study were 10 volleyball athletes and 10 athletic athletes aged 9-12 years. The results of data analysis based on the results of the study indicate that the problem of minimal achievement of athletes in volleyball and athletics is due to the level of physical condition and anthropometry which are still less than ideal.
Efectivitiy of Guidelines for Basic Motion Techniques for Volleyball Games with Biomechanics Analysis KINOVEA Application Based on Video Volleyball Games
Authors: Labib Labib , Muhyi Muhammad , Harwanto Harwanto
Published: January 2022

This study aims to determine the validity and effectiveness of the basic movement technique guidelines for volleyball games with biomechanical analysis using the kinovea application. The results of this study are expected to improve students' ability to understand and master basic volleyball techniques effective and efficient. Development research is used to answer the problems found. The research was conducted on SMK/SMA level students from January to April 2021. The research instruments include the kinovea application, interview guide, documentation, and the effectiveness test questionnaire sheet from the manual that will be filled out by the respondent. The results showed that the development of a basic technique manual for playing volleyball was effective. As evidence of the feasibility of the book, 80.1% of the small group test is feasible, the medium group test is 88.1% very feasible category, and the large group test shows that 89.1% is in the very feasible category. Based on the test results of small, medium, and large groups, the development of a basic technical manual for playing volleyball for SMK Negeri 1 Surabaya is quite practical. As a further suggestion, it is necessary to develop types of games that support the introduction of basic techniques in volleyball.
Development Of Futsal Playing Skills Application Based On Web-Based Futsal Analysis System (FAST)
Authors: Ridwan Mochamad , Fikri Muhammad Dzul , Aryanandha I Dewa Made , Syafi"i Imam , Bulqini Arif
Published: January 2022

This study aims to determine the level of success of futsal athletes in applying playing skills. This research was conducted at the Unesa Futsal GOR with a sample of 25 athletes from the Unesa Women's Futsal UKM. The method used in this research is Waterfall Methods. This method is a Software Development Life Cycle (SDLC) approach. The results of this study are the FAST application can display graphs and the percentage of success, failure of athletes in carrying out basic technical movements. It can be concluded that the FAST application is suitable for use by coaches to determine futsal playing skills.
The Effect of Shuttle Run and Zig-Zag Run Training On Dribbling Skills
Authors: Hidayat Rachmat , Riswanto A Heri , Hasanuddin M Iqbal
Published: January 2022

The shuttle run exercise is a form of exercise that can improve agility. The zigzag run exercise is a form of agility training that involves the use of bollards and stakes. UM Palopo futsal players must have good dribbling skills. The conditions experienced by UM Palopo futsal players still often make mistakes in their dribbling skills. The lack of skills possessed by UM Palopo futsal players is due to the lack of agility training models that can support the achievements of futsal players. This study aims to reveal the effect of shuttle run and zig-zag run training on dribbling skill. The method used is a quasi-experimental (quasi-experimental). The population is 20 people from UKM Futsal UM Palopo. The sampling technique is purposive sampling. The data collection technique used the dribbling skill instrument and was analyzed by using the sig level t test. = 0.05. The results of the analysis show that there is a significant effect of shuttle run  with a value of tcount value of 20,904 > ttable of 1,812 and pvalue that is 0.000 < 0.05. Zig-zag run with tcount value of 26,826 > ttable of 1,812 and pvalue that is 0.000 < 0.05. The improvement in shuttle run training with an average value of 17.55 and zig-zag run training with an average value of 15.61 and a significant value of 0.000 < 0.05. It can be concluded that the zig-zag run is more effective in improving dribbling skills.
Relationship between Physical Activity and Motor Skills in Elementary School Students: Meta-Analysis Study
Authors: Pratama Muhammad Hamzah , Supriatna Supriatna , Hanief Yulingga Nanda
Published: January 2022

Many studies that examine physical activity and motor skills have been carried out in sports. These studies explain that physical activity has a very positive effect on improving motor skills and athlete performance in all sports. However, the results of each study tend to be different, so it is necessary to carry out inclusive data analysis to provide comprehensive information about the importance of activity in improving athletes' motor skills. This study examines the effect size test of physical activity on motor skills in sports. This study uses a meta-analysis study method. The source of data in this study is Google Scholar. Search literature from various sources using relationships, physical activity, and motor skills. Data analysis was carried out through the stages of identifying variables, identifying the value of r, transforming the value of r into a z distribution, the effect size of each study, calculating the variance, calculating the standard error of z, and calculating the summary effect. The summary effect calculation uses Jeffreys's Amazing Statistics Program (JASP) software. The final result of this study explains a significant positive correlation between physical activity and motor skills. A correlation value of Random Effect (r_RE) 0.8453 indicates that the relationship between physical activity and motor skills is included in the high category.
Development of Teaching Materials for Volleyball Games through an PJOK AKTIF Approach (Fun, Character, Measurable, Innovation, and Fit)
Authors: Rufron Moh , Muhyi Muhammad , Harwanto Harwanto
Published: January 2022

This study aims to determine the level of validity, practicality, and effectiveness of teaching materials for learning PJOK ACTIVE (Fun, Character, Measurable, Innovation, and Fit) at SMP Negeri III Kamal Bangkalan. The benefits of this research are expected to increase students' understanding and students' abilities in PJOK learning practices. This research is a type of development research. There are 10 stages in the product development process starting from the preliminary study stage, planning stage, initial product design stage, field test stage, revision stage, main field test stage, product revision stage, group test stage, final product revision stage, and dissemination stage. The research was conducted at SMPN 3 Kamal Bangkalan from January to May 2021 with a total of 137 students. The data were analyzed using the percentage of the product trial results. The results of the study showed that the results of the product development of teaching materials for ACTIVE PJOK learning for students of SMPN 3 Class 1 in Kamal Bangkalan were declared feasible, very helpful, and could support the implementation of PJOK learning in schools. The results of product development that have been produced can be used as a reference in PJOK learning and besides that it can be developed according to needs.
The Level Of Motivation Parents To Involve Their Children In Cycling Activities
Authors: Firmansyah Awang , Prasetya Muhammad Reza Aziz , Hartoto Setiyo
Published: January 2022

Every parent's motivation for their child must be different and varied, but all of them are positive things for a child's development. In this pandemic era too, there are many sports activities carried out by various regions and various groups in Indonesia. One of them is the participation of their children from the age of 6 to 15 years, with boys and girls, and their ideal body weight in cycling activities. In this study, the authors examined a cycling activity as well as many parents who accompanied their children from the beginning to the end of the activity. The purpose of the study was to analyze the level of motivation of parents to involve their children in cycling sports activities. Descriptive quantitative research methods and data analysis using analysis with Likert scale calculation techniques. The results of this study indicate that 66.7%% of parents do cycling activities only to fill useful free time, 29.2% indicate for motor development, and 12.5% ​​to increase body immunity. It can be concluded that the level of motivation of parents to involve their children in cycling  activities to fill their spare time is included in the important category (66.7%).
Oxygen isotope fractionation in otoliths: experimental results from four North Pacific and Arctic gadid species
Authors: Kastelle CR , Helser TE , Laurel BJ , Copeman LA , Stone KR , McKay JL
Published: January 2022

High-latitude climate warming is expected to have wide-ranging effects on habitats, ecosystems, and the fish species that occupy them. Not all fish species will be able to adapt to increasing temperatures. We investigated oxygen isotope fractionation in fish otoliths and its relationship to environmental temperature and thermal histories of individual fish. Fish from 4 gadid species, Gadus macrocephalus, Boreogadus saida, Eleginus gracilis, and G. chalcogrammus, representing North Pacific and Arctic regions, were reared in a range of controlled temperatures (0-20°C). We estimated 4 new species-specific otolith oxygen isotope fractionation equations, a relationship between otolith δ18O and temperature (T) in the form δ18Oo - δ18Ow = m × T°C + b and also in a second form using the fractionation factor α: 1000 ln α = a × (1000 TK-1) + c, where o is otolith, w is water, and m, b, a and c are regression coefficients. In using the first form, B. saida was the most unique among the 4 species, with the steepest slope (-0.23) and the highest intercept (32.99‰ Vienna PeeDee Belemnite [VPDB]). G. macrocephalus had the lowest slope (-0.17) and the lowest intercept (31.76‰ [VPDB]). Results of an ANCOVA test indicated that the 4 fractionation equations were not statistically different (F = 2.25, p > 0.087). However, when we applied the 4 new fractionation equations to δ18Oo measured in wild-caught B. saida otoliths, the species-�specific fractionation equation resulted in the closest match between measured and predicted water temperatures. These new fractionation equations represent new tools for investigating temperature effects on fish biota and will also improve paleotemperature reconstruction, especially for high-latitude species.
Perbandingan Tebal Perkerasan Menggunakan Nilai CBR Laboratorium dan CBR Lapangan (DCP) (JLS Jarit-Puger)
Authors: Laili Alvina Praha , Hasanuddin Akhmad , Wicaksono Luthfi Amri
Published: January 2022

CBR (California Bearing Ratio) data is used to find out the level of subgrade density, so that a safe pavement thickness can be planned. The calculation of the CBR (California Bearing Ratio) can be done by testing CBR laboratory and DCP. CBR results have a high effect on the surface layer, so that the layer becomes thinner. This condition, if converted to the working price, will be more affordable and efficient. Therefore, this study aims to compare the results of laboratory CBR and Field Cbr (Dcp) to the thickness of flexible pavements in the Development of Trans South-South Java Road Project (TRSS) Lot 8 Jarit - Puger. The method used is Bina Marga Pd T-01-2002-B. Secondary data obtained by weigh bridges and service providers, namely PT. Brantas Abipraya (Persero). Field CBR value using DCP tool is 25.19% while Laboratory CBR value is 21.616%. The results of pavement thickness using Field CBR values ​​for UR 10 years are D1 7.5 cm, D2 10cm, for UR 20 years D1 10 cm, D2 11 cm, for UR 30 years D1 11 cm, D2 12 cm, and for UR 40 years obtained D1 13 cm, D2 14 cm. The greater the CBR value, the thinner the pavement thickness.
Pengaruh Penambahan Serat Kawat Bendrat Terhadap Kuat Lentur Beton Geopolimer
Authors: Indrayani Indrayani , Tilik Lina Flaviana , Suhirkam Djaka , Suhadi Suhadi , Wardana Muhammad Prawira , Milawati Iros
Published: January 2022

Currently, innovation continues to be developed to replace cement with other materials so that the use of cement as a building material can be reduced. Utilization of coal waste (fly ash) is an alternative to subtitude cement. From previous studies, fly ash mixed with alkaline materials in the form of NaOH and Na2SiO3 in a ratio of 1:5 can produce geopolymer concrete. This geopolymer concrete research was continued by adding bendrat wire fibers into the geopolymer concrete mixture. The method used in testing the aggregate, testing the compressive strength of normal concrete K225, testing the flexural strength of normal concrete and geopolymer concrete refers to SNI. Another additional material that is mixed is bendrat wire fiber. The research was carried out in the form of making flexible beams of 10 cm x 10 cm x 50 cm with fiber variations of 0%, 0.5%, and 1,0% at the age of 14 and 28 days. The results of the flexural strength test of the BN beam at the age of 28 days can withstand loads than BG. The average flexural strength obtained with variations of BN, BN+SB 0.5% and BN+SB 1.0% respectively were 2.796 MPa, 3.113 MPa, and 3.879 MPa. The results of testing the average flexural strength of geopolymer concrete beams at 28 days, obtained variations of BG, BG+SB 0.5%, and BG+SB 1.0% respectively were 0 MPa, 0.055 MPa and 0.104 MPa. In addition, geopolymer concrete cannot be used as a beam and the addition of bendrat wire fiber to geopolymer concrete cannot withstand the tensile load on the concrete.
Analisa Perilaku Pushover pada Pengujian Balok Beton Bertulang
Authors: Tampubolon Sudarno P
Published: January 2022

Beams are part of the building structure that is important to consider when designing the structure. Some failures that occur in beams due to beam reinforcement are not installed such as planning/ design procedures, this problem can cause structural failure. Knowing the behavior of the beam structure due to the given load can help predict the strength of the structural beam and the comfort of the planned structure. To determine and predict the strength and comfort of the reinforced concrete beam structure due to the received load, experimental and simulation tests are carried out. VecTor2 simulation is used to predict shear, crack, and displacement forces in reinforced concrete beams when displacement loads are applied. The bond stress-slip effect (0.139) has a good effect on the strength and hysterical response of reinforced concrete beams. From the results of pushover testing and simulations, it is obtained that the ratio for load capacity ranges from 1.00-1.095. In addition, the installation of 135˚ hooks on stirrups shows that the crack behavior that occurs forms an angle of 45˚, this indicates that the bond between concrete and reinforcement is going well, this can be seen from the analogous behavior principle of reinforced concrete beams.
PENGGUNAAN BATANG ECENG GONDOK TERHADAP KUAT TEKAN DAN KUAT TARIK BETON
Authors: Priyatno Gunawan , Srie GunartI Anita Setyowati , Paryati Ninik
Published: January 2022

Tanaman Eceng Gondok yang tumbuh sangat cepat berdampak negatif bagi fungsisungai, rawa dan danau dimana akar tanaman yang menggantung ini menyerap oksigenyang berada disekitarnya. Aliran air sungai jadi terhambat karena penuh oleh tanamanEceng Gondok, oleh karena itu perlu adanya pemanfaatan Eceng Gondok yang positifseperti sebagai bahan tambah campuran beton.Pengujian laboratorium dilaksanakan dengan menambahkan serat batang EcengGondok pada beton. Penambahan serat sebesar 0,25 %, 0,50 % dan 0,75 % subtitusiterhadap agregat halus. Pengujian yang dilakukan yaitu uji kuat tekan dan uji kuat tarikbeton dengan mutu K-225.Hasil penelitian menunjukan penurunan kuat tekan beton sebesar 7,54 % terhadapbeton normal pada komposisi serat Eceng Gondok 0,25 %. Begitu juga dengan nilai kuattarik beton terjadi penurunan sebesar 7,57 % terhadap beton normal pada komposisi seratEceng Gondok 0,25 %. Seiring dengan pertambahan kadar serat Eceng Gondok, nilai kuattarik dan tekan semakin menurun.
ANALISIS KEHILANGAN TINGGI TEKAN DAN KEBUTUHAN AIR JARINGAN DISTRIBUSI AIR BERSIH DI PERUMNAS TALANG KELAPA PALEMBANG
Authors: Andayani Reni , Djohan Bahder , Nurmansyah Nurmansyah
Published: January 2022

Perumnas Talang Kelapa blok III memiliki 860 rumah, dengan PT. Adhya Tirta Sriwijaya penyedia layanan air bersih. Permasalahan yang terjadi saat ini berupa kekurangan tekanan air, sehi
PENGGUNAAN VARIASI PH AIR (ASAM) PADA KUAT TEKAN BETON NORMAL F’C 25 MPA
Authors: Meidiani Srikirana , Septa Hartawan Muhammad Farsyah
Published: January 2022

Air merupakan salah satu faktor penting dalam pembuatan beton, karena air bereaksi dengan semen akan menjadi pasta pengikat agregat. Pada pekerjaan pembuatan beton, air yang digunakan haruslah air dengan pH netral dengan nilai 7. Pada daerah pedalaman sangat susah mendapatkan air yang bersih, para kontraktor biasanya membuat sumur atau menggunakan sungai yang ada pada daerah tersebut. Air yang didapat pada sumur dan sungai bisa jadi ber pH Asam ataupun Basa, sehingga air yang digunakan tidak memenuhi persyaratan. Hal ini dapat berpengaruh terhadap mutu atau kualitas beton. Tujuan penelitian ini adalah untuk mengetahui pengaruh dari penggunaan variasi pH Air terhadap mutu atau kualitas beton akankah terjadi penurunan atau malah sebaliknya, dan variasi pH air yang digunakan yaitu pH 4, 5, dan 6 yang termasuk pH asam. Sebagai pembanding adalah beton normal dengan pH air 7. Penelitian dilakukan di Laboratorium Beton dan Teknologi Bahan Fakultas Teknik Universitas IBA Palembang. Benda uji yang digunakan adalah kubus dengan panjang 15 cm dan lebar 15 cm, dengan jumlah sampel/ spesimen 3 buah untuk masing – masing variasi. Pengujian kuat tekan dilakukan pada umur 28 hari setelah dilakukan perawatan (curing). Hasil penelitian menunjukkan penggunaan variasi pH air menghasilkan penurunan terhadap nilai kuat tekan. Kuat tekan beton normal pH air 7 yaitu 25.96 Mpa sedangkan kuat tekan yang dihasilkan pada penggunaan variasi pH air 4 yaitu 20.32 MPa turun 21.71%. Kuat tekan yang dihasilkan pada penggunaan variasi pH air 5 yaitu 20.87 MPa turun 19.58%, dan kuat tekan yang dihasilkan pada penggunaan variasi pH air 6 yaitu 22.01 MPa turun 15.21%.
PERENCANAAN TEKNIS PENGELOLAAN AIR LIMBAH SEBAGAI SALAH SATU IMPLEMENTASI PROGRAM KAMPUNG IKLIM
Authors: Sylviana Rika , Hermana Dede
Published: January 2022

Perubahan iklim merupakan sebuah realitas yang telah dirasakan secara luas di berbagai belahan dunia, sehingga Kementerian Lingkungan Hidup dan Kehutanan (KLHK) mengembangkan Program Kampung Iklim (ProKlim) sebagai aksi nyata untuk meningkatkan ketahanan masyarakat terhadap dampak perubahan iklim serta upaya pengurangan emisi GRK sebagai komponen yang diperlukan dalam pembangunan berkelanjutan. Upaya adaptasi dan mitigasi perubahan iklim di lokasi ProKlim salah satunya adalah pengolahan dan pemanfaatan air limbah. Perolehan data untuk perencanaan teknis pengelolaan air limbah didapat melalui survei ke lokasi. Kemudian dilakukan perencanaan teknis atau desain yang disesuaikan kondisi lapangan. Besaran supply air hujan diperkirakan 2,22 m3. Debit (Q) air limbah domestik yaitu 0,005 m3/detik dengan perkiraan volume air limbah yang dapat diolah maksimal 108 m3 jika waktu pengalirannya selama 6 (jam) dalam 1 hari. Dimensi 3 unit bak pengolahan yang akan dibangun yaitu bak equalisasi/pengumpul 3,5 x 2,5 x 1,03 m dengan tebal dinding 15 cm dan ruang bebas (free board) 0,97 m, serta volume efektif 21,9 m3, dilengkapi dengan alat penyaring sampah kasar (bar screen). Kemudian dimensi bak pengendapan (sedimentasi) awal dan akhir masing-masing yaitu 3,5 x 2,5 x 1,03 m dengan tebal dinding 15 cm dan ruang bebas 0,97 m serta volume efektif 17,5 m3. Selanjutnya biofilter aerob terdiri dari 2 (dua) ruangan yaitu ruang aerasi (3,5 x 2,5 m dengan tebal dinding 15 cm dan volume efektif 17,5 m3) dan ruang bed media (3,5 x 2,5 x 1,03 m, tebal dinding 15 cm). Kebutuhan udara aktual 190 liter/menit diakomodir blower 2 unit berkapasitas 100 liter/menit.
Penggunaan CSS-Mortar Busa Sebagai Alternatif Pemilihan Tipe Konstruksi Jalan Layang terhadap Biaya Konstruksi
Authors: Santoso Hinawan Teguh
Published: January 2022

The elevated road construction which is originally intended to overcome congestion at the intersection of the highway/train, actually sometimes worsen the congestion that exists during the construction period. Therefore, a new construction method and technology is needed to minimize the congestion and provide a short construction period. CSS-Mortar Foam is a new technology introduced by the Research Center of the Ministry of PUPR (Pusjatan) in 2016 which has been applied to the construction of the Antapani flyover in Bandung. A study is needed to compare the construction cost of this technology with the technology of the overpass structure which is commonly used, namely PCI-Girder. Data collection process in this study are planning and DED data, inventory of work items and volumes, and the unit price. The next step is the construction-costs calculation process of the proposed alternative-construction types. The calculation of construction costs was carried out using the Work Unit Price Analysis (AHSP) which is developed by the Directorate General of Highways based on the third revision of 2010 General Specifications. The results showed that the alternative CSS-Mortar Foam construction types was able to reduce the construction costs of flyovers by 44.7% compared to the PCI-Girder construction type. Thus, CSS-Mortar Foam construction can be used as a more efficient alternative for flyovers/bridges construction.
PENILAIAN KONDISI DAN PREDIKSI UMUR SISA BERDASARKAN BRIDGE MANAGEMENT SYSTEM 1993 (STUDI KASUS JEMBATAN ATINGGOLA, PROVINSI GORONTALO)
Authors: Khairinnisa Rustawa Nita Widia , - Sumargo
Published: January 2022

Bridge inspection is the process of collecting physical data to ensure that the bridge is safe and thus securing the investment value of the bridge. Inspection results are used for planning the program of maintenance, rehabilitation, strengthening, and replacement of bridges. In this study, the assessment of the Atinggola bridge condition, located in Gorontalo Province, Indonesia, uses the reference standard from the Bridge Management System 1993, including the bridge top structure, the bridge bottom structure, complementary structures, and the river basin around the bridge. Previous bridge condition data which are based on the inspection result in 2017 are used as a comparison for the future. Condition values are used to predict the remaining life of a bridge using an equation developed by Bina Marga. Overall result shows the value of the bridge condition is 2 with the predicted remaining life of the bridge is 18.88 years. These results indicate that the bridge suffered minor damage and need routine maintenance. Therefore, the bridge is able to perform optimally until the end of the planned life.
Performa Struktur Kolom Pasca Perkuatan Dengan Metode Concrete Jacketing Bertulangan Bambu
Authors: Sunarwadi Hadi Surya Wibawanto
Published: January 2022

Kolom adalah elemen terpenting dalam sebuah struktur. Berdasarkan peraturan beton Indonesia SNI 2847-2013 disebutkan bahwa kolom merupakan elemen yang menerima beban aksial minimal 0,1 Pu serta beban lentur. Kerusakan pada kolom dapat terjadi akibat adanya beban berlebih yang diterima, desain pendetailan yang buruk, pelaksanaan konstruksi yang buruk, dan lainnya. Namun, yang paling sering terjadi adalah kerusakan pasca gempa. Perkuatan yang paling mudah dilakukan adalah metode pelapisan beton. Tulangan pada perkuatan yang digunakan dalam penelitian ini adalah bambu. Metode pengujian dilakukan dengan metode Quasi Static Loading Test dengan beban lateral sesuai dengan kontrol perpindahan dan juga beban aksial konstan. Hasil penelitian menunjukkan bahwa perkuatan pelapisan beton dari dimensi awal 15x15x90 cm menjadi 21x21x90 cm menunjukkan peningkatan kapasitas lateral, keuletan, kekakuan, dan disipasi energi. Selain itu terlihat bahwa perkuatan pada kolom rusak dan kolom tidak rusak kurang signifikan, yang berarti perkuatan dapat mengembalikan kapasitas awal benda uji eksisting hingga melebihi 100%.
Penambahan Serbuk Kayu Kamper terhadap Kuat Tekan Beton
Authors: Darmiyanti Lydia , Pribadi Gali , Rodji Achmad Pahrul
Published: January 2022

Sawdust waste from the furniture industry should be considered. Nowadays, the increased demand for furniture is in line with the increase in sawdust waste produced. Therefore, it is necessary to make use of sawdust to protect environment. An alternative use is the addition of sawdust as the concrete mixture. Cellulose and hemicellulose compounds are compounds contained in wood powder, where these compounds can provide additional bonding between particles in the cement and sand mixture in concrete. Therefore, concrete can be stronger as well as more water resistant, hence it can be used for a specific purpose in constructions. This study aims to analyze the compressive strength of concrete due to the addition of sawdust as an organic fiber in the concrete mixture with the percentage of 0.25%, 0.50%, 0.75% and 1% as substitution of sand. Organic fibers as additives in concrete are being developed until recently. The proposed concrete was 25 MPa quality. Result showed the increase in the compressive strength of concrete by 0.98% in 1% wood powder mixed at 28 days of concrete age.
Perkuatan Lereng pada Sempadan Sungai Jl. Sultan Agung Kabupaten Jember dengan Dinding Penahan Tanah Kantilever
Authors: Hakim Luqman , Putra Paksitya Purnama , Nurtanto Dwi
Published: January 2022

The land collapsed on Jl. Sultan Agung, Jompo, Jember Regency was reported. A team from the Regional Disaster Management Agency (BPBD) found cracks in the ground under a shop since February 2019. This incident resulted in a landslide of a road with approximately 45 meters long and 10 meters wide that it blocked the river flow, and nine shophouses, which are the assets of the Jember Regency government, collapsed as deep as approximately 4 meters. The cantilever type retaining wall is designed in the landslide area as an effort to revitalize the banks of Jompo river on Jalan Sultan Agung. Cantilever wall design stability refers to SNI 8460: 2017 and was assisted by using the GEO 5 program. The stability of cantilever walls against overturning shows a safety factor value of 3.72 that greater than 2 (safe condition), whereas the stability of cantilever walls against sliding was 1.61 that greater than 1.5 (safe condition), and the stability of the bearing capacity was 8.18 that greater than 3 (safe condition). Cantilever wall structure using concrete quality (Fc ') 40 MPa, and reinforcement quality (Fy) 420 Mpa, with a diameter and a distance of 25 mm and 125 mm respectively. Additional reinforcement was given to the Cantilever Wall, i.e. a bore-pile with a diameter of 60 cm which was fixed to a depth of 6 meters.
DEVELOPMENT OF RESEARCH OF CHEMISTRY OF COORDINATION COMPOUNDS IN V.I. VERNADSKY INSTITUTE OF GENERAL AND INORGANIC CHEMISTRY NAS OF UKRAINE: FROM THE 30'S TWENTIETH CENTURY(part1)
Authors: Trunova Elena , Koval Larisa , Pekhnyo Vasyl
Published: January 2022

The review considers the main stages of development of the chemistry of coordination compounds at the Institute of General and Inorganic Chemistry. VI Vernadsky National Academy of Sciences of Ukraine on the occasion of the 90th anniversary of its founding. An overview of complex compounds of p, d, f-me­tals with different classes of ligands (inorganic and organic), features of their synthesis, study of the structure and properties of the obtained compounds, contains current material on the use of synthesized complexes to create functional materials for different purposes. Me­thods of synthesis have been developed, do­zens of new coordination compounds with derivatives of hydrazones, amines, azomethanes, and thiosemicarbazones have been synthesized and isolated in the individual state. Their composition, structure and physicochemical pro­perties are determined. The general regularities that take place in the process of comple­xation of metals with ligands, as well as factors influencing the composition, structure and physico­chemical properties of the obtained coordination compounds are established.

For the long history of the Institute has accumulated a huge amount of material on the problems of modern coordination chemistry. Significant research in this area belongs to Ukrainian scientists who have worked long and fruitfully at the Institute: A.K. Babko, K.B. Yatsimirsky, Ya.A. Fialkov, I.A. Sheka, S.V. Volkov, N.A. Kostromina, and who created scientific schools, known not only in Ukraine but also abroad. To date, the attention of scientists of the Institute has shifted from classical monomeric to bigeteronuclear, polynuclear, multiligand complexes, which is primarily due to intensive research of new functional materials: optical and magnetic, biologically active substances, as well as effective adsorbents, chemical sensors, catalysts, catalysts, catalysts and biochemical processes.
EFFECT OF WATER-SOLUBLE POLYMER NV-1A ON ELECTROCHEMICAL PARAMETERS OF SULFUR ELECTRODE
Authors: Krushevskyi Oleksandr , Zhou MiaoMiao , Potapenko Oleksandr , Potapenko Anna
Published: January 2022

Studies have shown the possibility of a long cycle of sulfur electrode with a high content of active material. The use of water-soluble binder material NV-1A leads to the realization of high current loads in the Li-S battery. Impedance spectroscopy has shown that the low coulombic efficiency in the cycling of the sulfur electrode is primarily due to the spontaneous dissolution of sulfur in the electrolyte, which requires high energy consumption when charging the Li-S battery. The reduction of the specific capacity during cycling is associated with the formation and accumulation of non-conductive films of short-chain polysulfides. On the basis of the conducted researches and the review of the literature sources ways of overcoming of this problem are offered. The ability of cycling the sulfur electrodes at the high current loads has been shown. The discharge capacity values of the sulfur electrodes at the current load 790 mA∙cm-2 are 500 і 420 mAh∙g-1 on the 5-th and 100-th cycles, accordingly. Using the method of impedance spectroscopy, it has been supposed that the formation and accumulation of unconductive Li2S2 / Li2S phases is the main process, which induce the quick capacity reduction of Li - S batteries upon cycling.