bluuebunny/crossref_metadata_2025 huggingface dataset:
Shapeshifting Ligand Masks Lewis Acidity of Dicationic Palladium(II)
Authors: Sipps Karli , Gibbs Wyatt , Sayfutyarova Elvira , Kuo Jonathan
Published: March 2024

Supporting ligands reduce the Lewis acidity of transition metal ions, limiting the degree of electrophilic activation for any substrate. Here, we demonstrate that L1 and L2 mask the Lewis acidity of dicationic Pd(II) via a reversible C–N bond formation. These shapeshifting complexes catalyze electrophilic olefin isomerization, even in the presence of a polar functional group. The equilibrium between two coor-dination modes allows the system to access an electrophilic state that is comparable to a “naked” Pd(II) Lewis acid. However, because these shapeshifting systems are not sub-ject to the same rate determining step (via interconversion with a second less electrophilic state), they are also faster catalysts than the benchmark Pd(II) Lewis acid. Overall, we demonstrate that catalytic systems featuring reversible dy-namics can be advantaged relative to structurally static counterparts.
Mutual Interactions of Silymarin and Colon Microbiota in Healthy Young and Healthy Elder Subjects
Authors: Tomisova Katerina , Jarosova Veronika , Marsik Petr , Mascellani Bergo Anna , Cinek Ondrej , Hlinakova Lucie , Kloucek Pavel , Janousek Vaclav , Valentová Kateřina , Havlik Jaroslav
Published: March 2024

This study investigates how the dietary supplement silymarin interacts with gut microbiota, with a focus on aging populations. Using advanced techniques such as next-generation sequencing, NMR and LC-MS, we analysed the dual impact of the gut microbiome on silymarin metabolism and the effect of silymarin on the microbiome’s structure and function. The research revealed that silymarin significantly alters the metabolism of the gut microbiota, decreasing short-chain fatty acid production (acetate, butyrate, propionate) and glucose utilization. Importantly, the study unveiled age-related differences in silymarin catabolism. Healthy elders (70–80 years) showed a significant increase in a specific catabolite associated with Oscillibacter. Conversely, healthy young donors (12–45 years) exhibited faster breakdown of silymarin components, particularly isosilybin B, which negatively correlated with higher abundance of Faecalibacterium and Erysipelotrochaceae UCG-003. This study thus provides important insights into the age-dependent modulation of microbiome functionality in the metabolism of dietary flavonolignans, which has important implications for developing age-specific nutritional strategies.
Heterogeneously Catalyzed Thioether Metathesis by a Supported Au–Pd Alloy Nanoparticle Design Based on Pd Ensemble Control
Authors: Matsuyama Takehiro , Yatabe Takafumi , Yabe Tomohiro , Yamaguchi Kazuya
Published: March 2024

C–S bond metathesis of thioethers has gained attention as a new approach to the late-stage diversification of already existing useful thioethers with intact molecular frameworks. However, direct or indirect thioether metathesis is scarcely reported, and heterogeneously catalyzed systems have not been explored. Here, we develop heterogeneously catalyzed direct thioether metathesis using a supported Au–Pd alloy nanoparticle catalyst with a high Au/Pd ratio. The Au-diluted Pd ensembles suppress the strong π-adsorption of diaryl thioethers on the nanoparticles and promote transmetalation via thiolate spill-over onto neighboring Au species, enabling an efficient direct thioether metathesis.
Polar Opposites Attract on Saturn’s Moon Titan
Authors: Izquierdo-Ruiz Fernando , Cable Morgan , Hodyss Robert , Vu Tuan , Sandström Hilda , Lobato Alvaro , Rahm Martin
Published: March 2024

That polar and non-polar compounds do not spontaneously mix is a textbook rule of chemistry with few exceptions. Here we provide evidence for the intercalation of methane, ethane, and small hydrocarbons into the lattice structure of hydrogen cyanide (HCN), a highly polar molecule. Using cryogenic syntheses and Raman spectroscopy, we observe distinct shifts in vibrational modes in line with enhanced hydrogen bonding upon hydrocarbon insertion. Co-crystal structures composed of HCN and ethane that are both thermodynamically stable, and that closely match measured vibrational shifts are computationally predicted. Methane, ethane and HCN are major components of the atmosphere and surface of Saturn’s moon Titan, where they play key roles in shaping chemistry, weather, and landscape. Their intermixing may prove instrumental for explaining Titan’s chemical and geological evolution.
Description of a new genus and two new species of Darwinulidae (Crustacea, Ostracoda), from Christmas Island (Indian Ocean) with some considerations on the morphological evolution of ancient asexuals
Authors: Rossetti Giampaolo , Pinto Ricardo L. , Martens Koen
Published: March 2024

Darwinulidae is believed to be one of the few metazoan taxa in which fully asexual reproduction might have persisted for millions of years. Although rare males in a single darwinulid species have recently been found, they may be non-functional atavisms. The representatives of this family are characterized by a slow evolutionary rate, resulting in a conservative morphology in the different lineages over long time frames and across wide geographic ranges. Differences between species and genera, although often based on small details of valve morphology and chaetotaxy, are nevertheless well-recognizable. Five Recent genera (Darwinula, Alicenula, Vestalenula, Penthesilenula and Microdarwinula) and about 35 living species, including also those left in open nomenclature, are included in this family. Previous phylogenetic analyses using both morphological characters and molecular data confirmed that the five genera are good phyletic units. Here, we report on the results of a study on darwinulid ostracods from Christmas Island (Indian Ocean). The taxonomic investigation led to the description of a new genus and two new species, namely Isabenula humphreysi gen. nov. sp. nov. and Vestalenula sp. E, this latter being left in open nomenclature, because only one individual was available. A new phylogeny of the family, using 30 morphological characters of 23 described species, is here presented. A key to the genera of Recent Darwinulidae, based on the morphology of valves and soft parts in adult females, is also provided. The discovery of Isabenula gen. nov., which shares intermediate morphological features with the genera Vestalenula and Penthesilenula, opens new opportunities to critically reconsider previous hypotheses on tempo and mode of evolution in the family Darwinulidae and on the phylogenetic relationships between its representatives.
Updating the zooplankton species list for the Belgian part of the North Sea
Authors: Van Ginderdeuren Karl , Fiers Frank , De Backer Annelies , Vincx Magda , Hostens Kris
Published: March 2024

Many marine species are threatened, and given the importance of biodiversity indices in the current European marine policy, taking stock of existing species and species diversity is crucial. Zooplankton form the basis of the pelagic food web, acting as staple food for fish larvae and adult pelagic fish, but are very susceptible to a changing climate. Inventorying zooplanktonic diversity is therefore important. Based on monthly sampling campaigns in 2009 and 2010, an update is provided on the zooplankton species list for the Belgian part of the North Sea. A total of 137 taxa are listed, some of which had rarely or never been observed in the area. This inventory revealed several species new to the Belgian marine species list: the calanoid copepod Metridia lucens, the cyclopoids Oithona similis and Giardella callianassae, the hydrozoans Amphinema dinema and Eutima gracilis, the mysid Acanthomysis longicornis, the polychaete worm Tomopteris helgolandica, the cladoceran Penilia avirostris and the monstrilloid copepod Cymbasoma germanicum. Additionally, we identified several males of C. germanicum, which have never been described before. Brief discussions are presented on spatial distribution and abundance of all taxa.
Hubungan Fungsi Manajemen Kepala Ruangan Dengan Pelaksanaan Handover Menggunakan Komunikasi SBAR
Authors: Wulandari Rizki Yeni , Elasari Yunina , Nugroho Tri Adi , Kusnita Fani Euis
Published: March 2024

As much as 80% of the issues that result in medical errors are related to handover. One endeavor to increase patient safety at the hospital is the use of SBAR communication during handovers. The management duties of the head of the room, such as checking, directing, and evaluating the implementation of the handover, are directly tied to the effectiveness of implementing efficient communication during a handover. SBAR communication during handovers is a problem that happens in Pringsewu Hospital. The objective of this study is to determine the correlation between head management function and the implementation of handovers using SBAR communication at Pringsewu Regional Hospital.

This research type is quantitative. The research design used a descriptive correlation using a cross-sectional approach. This research was conducted at the Pringsewu Regional Hospital in May 2023. The total population was 70 nurses in 5 inpatient rooms. The sampling technique uses total sampling. The data collection instrument used a questionnaire and data analysis used the Fisher's exact test.

The results showed that there is a correlation between the room head management function and the implementation of handover using SBAR communication, with a p-value = 0.007. It is expected that the head of the room will improve the 5 management functions of the head of the room, especially the supervisory function so that handovers using SBAR communication can be carried out optimally.
Research Status and Prospect of Liquid Carbon Dioxide Fracturing Technology
Authors: Qiao Dongyu , Wang Xuecheng , Meng Leifeng , Chen Jiangping , Yu Jicheng , Chi Qifu , Li Sheng
Published: March 2024

Liquid carbon dioxide fracturing technology has emerged as a novel unconventional method of retrieving oil and gas resources. As carbon dioxide is used as the fracturing fluid, it reduces the dependence on water resources and environmental pollution. The low viscosity and high diffusion properties of liquid carbon dioxide allow it to penetrate rocks more effectively, improving the efficiency of oil and gas extraction. In addition, the technology has potential carbon dioxide sequestration benefits that could help mitigate climate change. However, liquid carbon dioxide fracturing technology still faces challenges in terms of cost, technology maturity, and environmental impact. At present, academia and industry are actively engaged in research to improve the feasibility and economics of this technology, with the goal of providing new solutions for the sustainable development of energy in the future. This paper focuses on the research status and prospect of liquid carbon dioxide fracturing technology.
The comparison of cultural values analysis of Joker Movie and Marlina si Pembunuh dalam Empat Babak movie and its contribution in Cross-Cultural Understanding teaching
Authors: Prayogo Gayuh , Ambarini Ririn , Sukmaningrum Rahmawati
Published: March 2024

The objectives of the research is to discover the cultural values found in Joker and Marlina Si Pembunuh dalam Empat Babak movies, to find the differences in cultural values in Joker and Marlina Si Pembunuh dalam Empat Babak movies, to find out the contribution of the cultural value analysis from those two movies to the Cross-Cultural Understanding teaching. This research is conducted by utilizing the descriptive qualitative method. The data collected by download the movie from the website. The researcher was collecting and observing the data to find the Cultural value, the dimensional cultural value from both movies, and their contribution in cross-cultural understanding. The object of the research is divide into three-point. The first point is that the type of cultural value theory used, there was a cultural value stated by Geert Hofstede (2010) Dimension of Culture theory. To be more specific there are 18 American cultural values for “Joker” and 10 for “Marlina Si Pembunuh dalam Empat Babak”, the results of Indonesian cultural values are 16 for “Joker”, 19 for “Marlina Si Pembunuh dalam Empat Babak”.The second researcher’s results are to discover the differences in cultural values in the “Joker” and “Marlina Si Pembunuh dalam Empat Babak” movies. Hofstede Insights Country Comparison variables consist of six dimensions; power distance, uncertainty avoidance, individualism, long-term orientation, indulgence, and masculinity. In the third research result, the researcher elaborates the advantages of the contribution of the cultural value analysis from those two movies in this study to Cross-Cultural Understanding. There are as a reference for the Cross-Cultural Understanding teaching method and as a reading source of cultural value analysis.
Productive indicators of the Manych Merino sheep breed depending on the genotypes of the growth hormone gene
Authors:   Timirâzevskaâ selʹskohozâjstvennaâ akademiâ, SKORYKH L.N.
Published: March 2024

The article presents the results of genotyping of sheep of the Manych Merino breed. The specificity of the allele spectrum of the GH (growth hormone) gene controlling growth and development, as well as influencing the meat productivity of sheep, was revealed, expressed in different frequency of occurrence of both alleles and genotypes. The connection of allelic variants of the GH gene with growth indicators and exterior parameters has been established.
The effect of young ram’s genotype on mineral metabolism
Authors:   Timirâzevskaâ selʹskohozâjstvennaâ akademiâ, YULDASHBAEV Yu.A.
Published: March 2024

The article presents the results of studying the features of mineral metabolism in the body of purebred Romanov sheep (group I), its crossbreeds of the first generation with Edilbai - ½ Romanov × ½ Edilbai (group II) and the second generation - ¼ Romanov × ¾ Edilbai (group III). It was found that due to the effect of crossing, crossbred sheep of groups II and III outperformed purebred peers of group I in terms of calcium and phosphorus intake with feed by 3.93‑20.39% and 12.23‑14.63%, their deposition in the body - by 15.30‑25.07% and 16.20‑17.88%, the value of the utilization factor from the accepted - by 0.38‑1.92% and 1.56‑4.57%.
Influence of probiotics on milk productivity and technological properties of milk of Zaanen breed goats
Authors:   Timirâzevskaâ selʹskohozâjstvennaâ akademiâ, Safina A.K.
Published: March 2024

The article presents the results of experimental studies to study the effect of feeding probiotic feed additives Kluver Pro and BeneFIT Basic on milk productivity, composition and technological properties of milk from Saanen goats. It has been established that feeding probiotics Kluver Pro and BeneFIT Basic as part of the diets of lactating goats of the Saanen breed helps to increase milk yield by 9,5‑4,4% (p≤0,001), the mass fraction of fat in milk - by 0,73% (p≤0,05) and 0,11%, mass fraction of protein in milk - by 0,25% (p≤0,05) and 0,19%, as well as milk clotting time - by 7,3% and 5,4% (p≤0,001) and the formation of a denser rennet curd, which is a desirable property in the production of fermented milk products and cheese making
Influence of prebiotic feed additives on the growth and metabolic processes of fattening lambs
Authors:   Timirâzevskaâ selʹskohozâjstvennaâ akademiâ, Gorlov I.F.
Published: March 2024

Влияние пребиотических кормовых добавок на показатели роста и обменные процессы баранчиков на откорме
ANÁLISE COMPARATIVA ENTRE AS IMAGENS RADAR DA AERONAVE DE SENSORIAMENTO REMOTO DO SIVAM E ÓTICA DO LANDSAT 7 ETM+
Authors: Nascimento Melchior Carlos do , Da Silva Perícles Cardim
Published: March 2024

O governo brasileiro decidiu, após detalhado diagnóstico, instalar uma grande infraestrutura de sensores que pudesse fornecer dados confiáveis da região amazônica. Esta infraestrutura é conhecida como Sistema de Vigilância da Amazônia – SIVAM. Entre os sensores previstos para entrar em operação em 2002, estão três aeronaves de sensoriamento remoto, na qual encontram-se instaladas um radar de abertura sintética (SAR), um imageador multispectral (MSS) e um sensor ótico e infravermelho (OIS). O presente estudo analisou a sinergia entre os dados SAR- Radar de Abertura Sintética e Landsat 7 ETM+ quanto a capacidade de distinção de alvos. Foram analisadas bandas individuais e compostas de ambos os sensores e os resultados foram avaliados de forma qualitativa e quantitativa. Os resultados indicaram que os dados SAR foram eficazes na discriminação de vários tipos de cobertura, especialmente nas polarizações XL, LHH e LHV em relação as imagens do satélite Landsat TM.
GEOGRAFIA, FORMAÇÃO ECONÔMICA E SÓCIO-ESPACIAL E O MOVIMENTO DE FUSÕES, AQUISIÇÕES E PRIVATIZAÇÕES DA DÉCADA DE 1990
Authors: Corrêa Domingos Sávio
Published: March 2024

O presente trabalho procura retomar a contribuição teórica de autores da Geografia ao conceito de Formação Econômica e Sócio-Espacial, associa-la ao tema das fusões e aquisições e discutir aspectos relativos à implementação das políticas neoliberais e suas consequências para a economia brasileira. Considera a relevância da categoria de formação econômica e sócio-espacial e as contribuições dos geógrafos brasileiros Milton Santos e Armen Mamigonian na discussão da temática. Ao primeiro, pela proposição da categoria de formação econômica e sócio-espacial, e ao segundo pela utilização e defesa dessa categoria de análise em sua trajetória, configurando a junção entre Geografia e Marxismo no âmbito da Geografia brasileira. Portanto, este artigo retoma pesquisa iniciada na década de 1990, e expressa o sentido geral da discussão proposta no âmbito da disciplina “Geografia da organização empresarial no Brasil e no Mundo”, oferecida no Mestrado em Geografia, na linha de pesquisa “Organização do Espaço Geográfico”.
MAPEAMENTO DA SUSCEPTIBILIDADE EROSIVA NA BACIA HIDROGRÁFICA DO RIO PRATAGY, ALAGOAS
Authors: Tavares Kleython Alysson da Silva , Ferreira Neto José Vicente
Published: March 2024

O estudo proposto tem como finalidade analisar espacialmente e discutir a influência e a inter-relação das atividades antrópicas sobre a susceptibilidade erosiva na bacia hidrográfica do rio Pratagy, estado de Alagoas, utilizando-se de técnicas de geoprocessamento e sensoriamento remoto. A metodologia consistiu numa série de procedimentos para a obtenção das variáveis necessárias a fim de se determinar o mapa síntese de susceptibilidade erosiva por meio de análise de multicritério. Foram utilizadas imagens orbitais para o mapeamento da cobertura e uso do solo; dados hidrológicos do Departamento de Ciências Atmosféricas da Universidade Federal de Campina Grande; curvas de nível com equidistância de 30m do projeto TOPODATA; além de bases cartográficas do Zoneamento Agroecológico de Alagoas referente à pedologia. Como resultado, foi possível realizar uma análise qualitativa e quantitativa da influência antrópica na susceptibilidade erosiva da bacia em estudo.
OS AGENTES FORMADORES DO ESPAÇO URBANO DA CIDADE DE VIÇOSA, ALAGOAS - BRASIL
Authors: Silva Vanderlan Cassimiro da , Silva Jaílton Elias da , Guimarães Júnior Sinval Autran Mendes
Published: March 2024

O espaço urbano é o meio que possibilita o desenvolvimento das atividades, relações e manifestações humanas, produzido em diferentes escalas e sofre intervenções dos agentes formadores que atuam no processo de construção da cidade. O presente trabalho busca mostrar a evolução histórica da ação dos principais agentes formadores do espaço urbano da cidade de Viçosa - Alagoas, onde se buscou analisar o poder desses agentes na produção do espaço, visando entender de que forma este espaço é produzido pela sociedade urbana. Como trajetória metodológica, foram realizadas leituras de autores como: Santos (1988), Correa (2004), Carlos (2005) e Botelho (2007), e também pesquisas exploratórias de campo na cidade. A pesquisa mostrou que até a metade do século XX o agente proprietário foi determinante para expansão da área urbana. Posteriormente o Estado aumenta sua intervenção com a produção de conjuntos habitacionais, que historicamente teve um crescimento mais rápido por meio da construção de unidades habitacionais populares, porém recentemente é notável a modificações no espaço e na paisagem promovidas pelos agentes imobiliários. Esses três agentes citados anteriormente são responsáveis por (re) organizar o espaço urbano na cidade de Viçosa, que dependo da maneira como é formado e modificado leva a consequências positivas ou negativas.
GEOSSISTEMAS E DINÂMICA DA PAISAGEM NA BACIA HIDROGRÁFICA DO RIO IPANEMA, REGIÃO DE SOROCABA, SÃO PAULO
Authors: De Souza Edson Prates , Arruda Emerson Martins
Published: March 2024

A pesquisa objetivou compreender a dinâmica ambiental da bacia hidrográfica do rio Ipanema a partir de uma abordagem Geossistêmica. Para auxiliar a pesquisa, foram elaborados documentos cartográficos com a utilização de software de geoprocessamento, bem como imagens de satélite SRTM (Shuttle Radar Topography Mission). Os documentos foram elaborados com dados coletados em campo, além dos dados fornecidos pela imagem de satélite. Nesse sentido, foram elaborados os mapas: Uso e Ocupação do Solo, Morfoestrutural e de Geossistemas, que muito contribuíram na análise e integração dos elementos naturais da bacia, correlacionando os fatores litológicos, climáticos, pedológicos e vegetação. A partir do Mapa de Geossistemas foi possível destacar as principais unidades da paisagem, o padrão geográfico-ambiental que compõem a paisagem, bem como as fácies encontradas nas mesmas, as quais foram individualizadas a partir de suas especificidades.
A AMAZÔNIA MARANHENSE À LUZ DAS POLÍTICAS DE DESENVOLVIMENTO E MEIO AMBIENTE
Authors: Araújo Maria do Rosário de Sá
Published: March 2024

O presente artigo tem como objetivo discutir algumas das relações causais entre os processos históricos existentes na Amazônia legal maranhense, no que tange a questões socioeconômicas no território e os aspectos ambientais. Para isso, considera a delimitação da Amazônia Legal maranhense enquanto recorte espacial e processos históricos, principalmente aqueles oriundos da segunda metade do século XX e início do século XXI para reflexão. Neste sentido, apresenta-se teoricamente, as relações entre as compreensões de desenvolvimento incorporada nos processos territoriais e ambientais. As reflexões apresentadas demandam para maior compreensão por parte das políticas de desenvolvimento quanto a manutenção do bioma e das relações socioeconômicas pré-existentes.
AOS POBRES PERTENCE O REINO DA TERRA
Authors: Carvalho Antonio Alfredo Teles de
Published: March 2024

Texto transcrito a partir dos manuscritos do discurso proferido por Josué de Castro ao presidir a sessão dedicada aos estudos sobre as armas atômicas no Conselho Mundial da Paz na cidade de Estocolmo (Suécia), em 1954. Posteriormente foi publicado no livro Ensaios de Biologia Social, pela Editora Brasiliense (1957). Por sua incansável luta no combate à fome e a miséria, o autor foi agraciado por este mesmo Conselho Mundial da Paz com o Prêmio Internacional da Paz.
AGRICULTURA URBANA NA PAISAGEM VERDE PÚBLICA DO BAIRRO JARDIM TROPICAL, SERRA-ES.
Authors: Saraiva Cleberson
Published: March 2024

As plantas cultivadas são um aspecto marcante na paisagem dos bairros urbanos populares; são árvores para sombra e frutíferas, plantas medicinais, alimentícias e ornamentais, compondo os passeios das ruas, terrenos vazios, praças, quintais e varandas. Essa paisagem, aparentemente estável, está em movimento, com plantas saindo e chegando, diante das contingências pessoais e da dinâmica aberta e conflitante do espaço urbano. O objetivo deste estudo é investigar a relação da multifuncionalidade da agricultura urbana com as plantas cultivadas no espaço público do bairro popular urbano popular Jardim Tropical, na Serra-ES. A metodologia utilizada foi a pesquisa bibliográfica dos conceitos, pesquisa documental sobre a geo-história do bairro e pesquisa de campo para localizar e compartimentar as plantas cultivada na porção pública do bairro. Os resultados mostraram que essas plantas cultivadas formam uma paisagem verde pública, em cujo compartimentos visualizados pelo pesquisador, acontecem relações sociais voltadas para revitalização e conforto ambiental, produção alimentos e remédios naturais em pequenas quantidades, lazer e interação social, promovendo o pertencimento ao lugar de vivência e caracterizando a multifuncionalidade da agricultura urbana.
AVANÇOS DO SIMPLE BIOSPHERE MODEL (SIB) NA REPRESENTAÇÃO DOS PROCESSOS FÍSICOS E BIOGEOQUÍMICOS: UMA REVISÃO DE LITERATURA
Authors: Barros dos Santos de Andrade Aurilene , Tota Julio , Antonio Marcos Delfino de Andrade
Published: March 2024

Os modelos de superfície terrestre desempenham um papel fundamental na estimativa dos processos físicos que ocorrem no sistema superfície-atmosfera. Sendo essenciais para a compreensão das transferências de energia, massa e momento e como condição de contorno da baixa atmosfera em modelos de circulação geral da atmosfera e de previsão do tempo, uma vez que a estimativa correta desses parâmetros à superfície é necessária para obter previsões precisas. Um desses modelos de superfície amplamente utilizados é o Simple Biosphere Model (SiB), que tem passado por melhorias e avanços desde sua primeira versão. O SiB4 é o mais recente que integra informações sobre cobertura terrestre, fenologia, alocação de carbono e fluxos de energia e massa, fornecendo estimativas válidas para diferentes ecossistemas e contribuindo para a compreensão das mudanças naturais e antropogênicas na superfície terrestre. O supracitado modelo é uma ferramenta que pode ser utilizada em uma ampla variedade de estudos, não se limita a estudos globais, sendo utilizado em estudos regionais para investigar as interações entre a terra e a atmosfera em uma variedade de tipos de vegetação e em uma ampla gama de climas. O presente estudo tem o objetivo de investigar a evolução do referido modelo ao longo das décadas, analisando as melhorias e avanços realizados na representação dos processos físicos e biogeoquímicos da superfície terrestre.
CENTRALIZAÇÃO, DESCENTRALIZAÇÃO E (RE)CENTRALIZAÇÃO DAS ATIVIDADES TERCIÁRIAS: O CENTRO DA CIDADE DE NOVA CRUZ-RN COMO REFERÊNCIA DE ANÁLISE
Authors: Coutinho Severino Alves
Published: March 2024

O artigo em pauta visa compreender os processos de centralização, descentralização e (re)centralização das atividades terciárias do centro da cidade de Nova Cruz-RN, enquanto expressões da centralidade intraurbana. Esta decorre da presença de elementos materiais e imateriais que produzem fluxos e impulsionam as relações na escala local. Ademais, a dinâmica da cidade não se limita apenas a um ponto ou nó onde se concentram produtos e pessoas, assim como sua centralidade não se refere unicamente ao antigo centro, mas também a outras áreas que se especializam para atender as demandas da sociedade. Para entender essa realidade, teve-se como procedimento um estudo teórico, pautado num referencial pertinente a temática proposta, tendo se utilizado também o Instituto Brasileiro de Geografia e Estatística (IBGE), como fonte de pesquisa para identificar empresas ou instituições que ainda permanecem no centro da cidade. Pela análise da pesquisa, fica claro que a funcionalidade desse espaço depende do desenvolvimento de suas atividades, pois estas, podem ser ampliadas, descentralizadas ou se recentralizar estrategicamente.
O ÍNDICES DE VEGETAÇÃO NDVI E EVI NO MONITORAMENTO DO CULTIVO DA SOJA NO MUNICÍPIO DE QUERÊNCIA – MT, SAFRA 2020/2021
Authors: Cesar da Silva Eduardo , Biasoli Trentin Carline , De Souza Silva Izaias
Published: March 2024

O estado de Mato Grosso é o maior produtor de soja do país, contribuindo para que a agricultura brasileira seja a responsável pelo equilíbrio na balança econômica. Em razão da crescente dependência econômica do país pela agricultura faz-se necessário uma produção em expansão, em contrapartida, aumenta o dever de se produzir com sustentabilidade, preservando ao máximo o meio ambiente. Nesse panorama, o Sensoriamento Remoto se junta às técnicas de manejo, auxiliando de forma satisfatória a agricultura a elevar seu patamar de produção. O presente trabalho tem como intuito o monitoramento do ciclo fenológico da cultura da soja, safra 2020/2021, por meio de imagens de Índices de Vegetação NDVI e EVI, em uma área experimental no município de Querência – Mato Grosso. Para este estudo foram gerados mapas de índices de vegetação NDVI e EVI do sensor MSI a bordo do satélite Sentinel – 2 ao longo do ciclo de desenvolvimento da soja, utilizando o software QGis. A partir do mapeamento foi possível monitorar o crescimento e desenvolvimento do cultivo e identificar parcelas com possíveis problemas no desenvolvimento da planta. Os Índices de Vegetação mostraram-se eficazes na discriminação do ciclo evolutivo da soja e na identificação de áreas com potenciais problemas de desenvolvimento, com melhor resultado para o EVI em relação ao NDVI, especialmente quando a cultura atinge um maior vigor vegetativo.
TEORIA E METODOLOGIA EM GEOGRAFIA URBANA
Authors: Souza Maria Adélia Aparecida de
Published: March 2024

Esta reedição do texto destinada a seção Contextos Clássicos da Revista Contexto Geográfico foi reproduzida na íntegra e, portanto, não contém o item Resumo.
ENSINO DE GEOGRAFIA ATRAVÉS DO ESTUDO INTEGRADO DA PAISAGEM: AULA PRÁTICA DE CAMPO NO AGRESTE SERGIPANO
Authors: De Jesus Santos Tiago , Oliveira dos Santos Maria Daniele , Dos Santos Cristiano Aprigio
Published: March 2024

Para entender como se deu a origem das paisagens que são observadas na atualidade é preciso recorrer aos acontecimentos passados estabelecendo assim uma reconstrução paleoambiental. Os aspectos paisagísticos de Sergipe compõem quadros complexos e diversos. Sendo assim, o presente estudo tem como objetivo analisar o agreste sergipano tendo a paisagem do Domo de Itabaiana seu recorte espacial para estudo de caso a partir da perspectiva integrada, em que diferentes aspectos estão envolvidos nas transformações da paisagem, além de propor uma abordagem de ensino em que a teoria e a prática estejam conectadas procurando compreender as singularidades dessa área de transição. Para realizar uma análise da paisagem, foi feito pesquisa de campo e aprofundamento teórico de autores que discorrem sobre este tema. Com a finalidade de assegurar o (re)conhecimento e a articulação teórico-prática no ensino de Geografia.
DESAFIOS NO ENSINO DA CLIMATOLOGIA GEOGRÁFICA: PROPOSIÇÃO DO JOGO “O OBSERVADOR” COMO DISPOSITIVO DIDÁTICO
Authors: Pereira Petronilio dos Santos Juliana
Published: March 2024

A pesquisa apresenta um instrumento didático ao docente de Geografia para o ensino da Climatologia Geográfica por meio de uma abordagem lúdica, apresentando uma estação climatológica para os discentes, seguindo as etapas metodológicas: (I) Pesquisa bibliográfica e visita a estação meteorológica da cidade de Salvador; (II) Elaboração da ferramenta didática; (III) Planejamento da sequência didática e do uso do jogo em sala de aula e aplicação; (IV) Coleta de feedback dos discentes que participaram. Como resultado o jogo de tabuleiro “O Observador”, pautado em perguntas e respostas acerca do tempo e clima e dos componentes da estação meteorológica e ao tabular os dados do questionário aplicado, obteve-se o apontamento para a necessidade de uma maior explicação dos conteúdos e melhoria da sequência didática e repetição da aplicação do jogo, forte interesse dos discentes e habilidades notadas durante a prática. Com isso, o jogo afirma-se como nova alternativa didática e possibilidade de ampliação.

Palavras-chave: Estações Meteorológicas, Jogo de tabuleiro, Climatologia Geográfica.
Penggunaan LPG Sebagai Bahan Bakar Untuk Motor Bakar
Authors: Puppung Pallawagau La
Published: March 2024

Penggunaan LPG sebagai bahan bakar tidak hanya untuk membantu substitusi bensin dan minyak solar serta pertimbangan-pertimbangan masalah lingkungan, tetapi titik berat terletak pada penghematan energi yang baik. Penyebarannya sebagai bahan bakar kendaraan bermotor menuntut beberapa hal yang harus diperhatikan misalnya penyimpanan, distribusi dan keselamatan. Perhatian terhadap keamanan merupakan masalah utama, hal ini dihubungkan dengan keselamatan umum yang disebabkan oleh sifat khusus LPG yang mudah menguap dan terbakar
Penelitian Aditif Pasaran Pengungkit Angka Oktana
Authors: Jasjfi E.
Published: March 2024

Dengan dihapuskanya bensin super-98 sebagai pelaksanaan kebijaksanaan bensin bermutu tunggal oleh pemerintah, di pasaran beredar berbagai aditif dalam kemasan kecil yang dipromosikan sebagai aditif pengungkit angka oktana.Untuk memastikan kebenarannya secara kualitatif dan kuantatif, maka dilakukan penelitian laboratorium. Tulisan ini menyajikan hasil penelitian mengenai salah satu aditif tersebut
Pegunungan Guadalupe, Cekungan Perem, Texas Barat-New Mexico
Authors: Yulianto Barlian
Published: March 2024

Pegunungan Guadalupe yang merupakan bagian dari Cekungan Perem terletak di bagian barat Texas dan tenggara New Mexico. Cekungan ini berarah utara-selatan, berbentuk lekuk yang tidak simetri beralaskan batuandasar Prakambrium, terletak pada batas selatanlempeng Amerika Utara.Runtunan sedimen Guadalupian di daerah ini terdiri atas endapan paparan dan cekungan. Evolusi geologi runrutan sedimen Guadalupian di awali oeleh pengendapan batasan karbonat ramp barrier bank system pada Leornardian Atas. Pada Guadalupian Awal-Tengah sistem ini berkembang menjadi shelf deep rim system. Berlanjutnya progradasi dari karbonat rimmed membentuk fasies terumbu pada Guadalaupian Aias
THE USE OF COAL AS FUEL FOR CEMENT MANUFACTURING AT PT. SEMEN GRESIK
Authors: Sumarwanto Sumarwanto
Published: March 2024

The conversion of fuel type, from oil to coal has considerable consequence as coal has very different combustion characteristics from oil. As the price of coalnis much lower, the process is viable.The use of coal as fuel in the cement industry requires more effort in technological treatment, such as: installationof the grinding plant, modification of the existing equipment, and the monitoring and continuous adjusting the blend. As the “ash” in the coal used for firing will combine with the raw mix during burning and thus causes a quite considerable change in the composition of the clinker. The combination of different blends of coal with different ash contents has to be carefully monitored to ensure clinker quality.
IMAGE PROCESSING TECHNIQUES FOR THE INFORMATION EXTRACTION OF THE LANDSAT TM IMAGERY APPLICATION TO GEOLOGICAL MAPPING OF THE NE JAVA BASIN*)
Authors: Tj Adji Gatot , Hermansyah Hermansyah , Kristadi H. Joko , Riyanto Heru
Published: March 2024

The image processing for geological feature extraction mainly concerns with information extraction, with the aid of computer, various techniques are possible to manipulate or modify, therefore the expected information will be enhanced end the unexpected are suppressed.
Carbon Monoxide Axidation Over Pt/Y-Alumina Catalyst
Authors: Triyono Triyono , Anwar Chairil
Published: March 2024

Oxidation of CO has been studied on Pt/y-alumina catalyst. The catalyst was produced by impregnating y-alumina with hexachloroplantic acid solution, calcined, oxidized and reduced at the optimum condition. Catalyst was characterized by nitrogen sorption measurement and scanning electron microscope (SEM). By optimization of calcination, oxidation and reduction on the catalyst preparation, a residual serface area of 129.14 m²/gram was obtained. The resulting catalyst has a high activity for the conversion of CO to CO₂.
ANALYSIS OF CUMULATIVE LIQUID CONTAMINANT CONTENT ACCUMULATED IN CNG TANK
Authors: Dwiyanto Moch. , Ismukurnianto D.A. , Caryana Yusep K.
Published: March 2024

The utilization of natural gas as vehicles’ fuel (BBG) is now being developed in Indonesia for either private cars or public cars. The reasons of using BBG are (1) the price of BBG is lower than fuel oil (BBM), (2) the cost of BBG’s cars maintenance is lower than BBM’s cars maintenance, (3) BBG is an environmentally friendly fuel. Moreover, BBG’s infrastructure has been built in some big cities.
PRELIMINARY CORE PREPARATION FOR SPECIAL CORE ANALYSIS-GUIDELINES
Authors: Adim Herlan
Published: March 2024

The application of core analysis to provide data for reservoir evaluation is not a new science but has seen continued research activity over along period. Core analysis is complex containing many stages between the reservoir and the final measurements and interpretation. To ensure the data produced is valid, every step along this phase must be handled with equal attention. Recently developed techniques of measuring certain special core analysis of rock formation are being perfected. The objective of this paper is to provide information that will be of practical value to geologists and engineers involved with preliminary core preparation program. Following is a guideline for preliminary special core preparation. The step by step outline presented below is a suggested guideline and, most certainly, modifications and or changes may be made. However, this guideline has been found to be very successful for laboratory works.
PRECISION OF THE OCTANE NUMBER MEASUREMENT FOR GASOLINE BY PETROLEUM LABORATORIES IN ASEAN COUNTRIES (1999)
Authors: Mustafa Bustani
Published: March 2024

A high precision of octane number measurement according to standard measurement and to standard requirement is a must in the refining industry. The ASEAN Council on Petroleum (ASCOPE) Correlation Programme is conducted to obtain the precision of octane number measurement data for gasoline the normally used methods of ASTM D 2699 and IP 239. This programme is participated by 19 petroleum laboratories in ASEAN Countries. The test results of the various participating laboratories are subjected to statistical analysis to determine their average value, variance, standard deviation, and to rejected the outlier values. The Grubb T-Test method was used for the statistical rejection of outliers. This method appears to be quite satisfactory for ASCOPE purpose. The implementation of the Grubb T-Test ensures the laboratory consistency and this in turn will give the buyers or sellers of the gasoline confidence in the quality of the gasoline This paper presents the results of 26 ASCOPE Laboratories Test Correlation Programme for Octane Number Measurement (1999).
THE HYDROCARBON LOSSES ON OIL CONTAMINATED SOIL BY LANDFARMING BIOREMEDIATION: A LABORATORY STUDY
Authors: Udiharto M. , Yusuf Agus , Syafrizal Syafrizal
Published: March 2024

Bioremediation, as a relatively new technology, is expected to be able to remediate the hydrocarbon contaminated soils which are often found in almost all areas of the petroleum industries activities. The bioremediation experiment had been conducted in a laboratory scale. The oil uncontaminated soil and parafinic oil samples are taken from an oil field. The soil is mixed with more than 5% hydrocarbon concentration in order to obtain an artificial oil contaminated soil. Indigenous microorganisms can grow on this oil contaminated soil. During incubation times, microbial cells grow rapidly, then followed by drastic decline of hydrocarbon contents on soils. It indicates that the indigenous microorganisms are capable to degrade petroleum hydrocarbon. On the addition of the organic fertilizer treatment, the highest degradation of hydrocarbon occurs. During four months of treatment, the hydrocarbon content on soil decreases more than 54%.
OIL AND GREASE DETERMINATION IN PETROLEUM OPERATION WASTE WATER
Authors: Desrina R. , Jasjfi E. , Mulyono M.
Published: March 2024

A regulation concerning waste water quality for oil and gas activities in Indonesia has recently been issued in the State Minister for Environment Decree No. 42/MENLH/10/1996. Waste water quality for oil and gas activities is classified in this decree according to the type of activities, namely exploration and production activities, refineries, and petroleum product storage and distribution activities. Maximum permissible concentration of oil and grease in waste water varies depending on the activities and mode of discharges. The oil and grease concentration in operation waste water that ranges from 20 ppm for the refineries to 75 ppm for off shore production have led to the variation in determination methodologies. Survey on oil and grease determination methods in Indonesia indicated that determination method ranges from gravimetric method that is unsuitable for light fraction to spectrometric method that depends on the oil standard. Moreover variation of solvent will give different result. This paper describes an overview of oil and grease determination conducted by the Indonesian oil and gas companies informing the advantages and disadvantages of each method. The possible single method that can be utilized as a standard method as well as approaches in conducting correlation program is proposed.
OBTAINING THE SUITABLE TECHNIQUES FOR PALYNOLOGICAL PREPARATION
Authors: Lelono Eko Budi
Published: March 2024

The term of “standard techniques” in preparation is no longer accepted since every sample has discrete characteristic which may require different treatment. Experiments prove that the modifications are needed to process the Eocene samples from Central Java and South Sulawesi.
EVALUATION OF THE FEASIBILITY OF PUBLIC TRANSPORT VEHICLES FUEL CONVERSION IN JABOTABEK AREA
Authors: Caryana Yusep K
Published: March 2024

NGV has been used as a vehicular fuel in Indonesia, particularly in Jakarta. However, the success of this NGV utilization is still in question. Currently, only taxicabs and a view dedicated buses have successfully utilized NGV for us fuel.
THE INFLUENCE OF ALCOHOL TYPE AND CONCENTRATION ON THE PHASE BEHAVIOR AND INTERFACIAL TENSION IN OIL-SURFACTANTCOSURFACTANT-BRINE MIXTURE SYSTEM
Authors: Purnomo Hadi , Nuraini Nuraini , Makmur Tjuwati
Published: March 2024

The number of mechanism is limited for reducing the entrapment of oil in the pore space of reservoir rock and for mobilizing that residual which remains entrapped, thereby improving the microscopic displacement efficiency of a petroleum recovery process. After primary recovery by flow powered by the energy stored in the compressed fluids of reservoir, and secondary recovery by injection-pump driven water flooding, residual oil is trapped by the capillary pressure developed by interfacial tension in curved menisci between oil and water in the pore space. Figure 1.1 illustrates the interplay of capillary and viscous forces in the water flooding process. Shown in the figure is water displacing oil. The important point is that residual oil is trapped in the pore space by interfacial tension. To improve micros- copic displacement efficiency is to reduce interfacial tension between oil and water. Surfactant is surface active agent chemical that has two types of properties; lypofob (like water) and hydrofob (like oil). The value of interfacial tension between oil and water is high, when surfactant is dissolved into water and contacts with oil, so that surfactant is not only soluble in the water, but also it is soluble in the oil. By addition of surfactant into the water and contact with oil can result in interfacial tension between oil and water from high (more less 20 - 30 dyne/cm) to lower interfacial tension (10-2 dyne/cm). To change the lower interfacial tension to the lowest interfacial tension conditions (10-4dyne/cm), cosurfactant in oil-surfactant-brine mixture is used. Alcohols are widely used in micellar surfactant systems for enhanced petroleum recovery and are variously called cosurfactant or cosolvent. In general, alcohols modify the physico- chemical properties in ways that are important to the design of surfactant-based process for improving petroleum recovery. This research is focused on alcohol effects on oil-surfactant-brine phase behavior and interfacial tension of oil-surfactant-brine system.
تأثير تبنّي معيار القطاع العام IPSAS24 "عرض معلومات الموازنة" على موازنة البرامج والأداء
Authors: Waheed Ahmed , Saleem Shukri
Published: March 2024

The study aims to achieve two main objectives, the first is to determine the impact of adopting the public sector standard IPSAS24 “displaying budget information” on the budget of programs and performance, as this standard allows the disclosure of the budgets of the economic units approved in actual amounts versus the estimated amounts in their financial statements and therefore on the public budget of the state, it also includes these disclosures about the important differences between the actual and estimated amounts in the reports and financial statements of the economic unit and then the general budget of the state, the discussions, the administrative analyzes and the results of the budgets, where the study concluded that there is a significant positive effect of the IPSAS 24 standard “displaying budget information” on the program budget and performance in general, the study also concluded Until the adoption of IPSAS24 “displaying information on the balance” has a positive effect on knowing and identifying performance deviations in the budgets of the country’s budget, the study is recommended to adopt the IPSAS public sector standard and generally to adopt the international accounting standards in the public sector, economic units can obtain a lot of The great benefits derived from achieving consistent and comparable financial information in various disciplines and it is believed that international accounting standards in the public sector will play the main role in the possibility of achieving these benefits. The IPASA 24 standard shows balance information “especially when it has features that support the application of software and performance balancing
estimating the survival function Maximum Likelihood and Cramér-Von Mises Method use of amixture distribution weibull and ailamujia with apractical application
Authors: Jafaar Azraa , Jafaar Wafa
Published: March 2024

Tow failure distributions were mixed ,weibull distribution and ailamujia distribution it's called weibull –ailamujia distribution which consists of four features, the two distributions were mixed by adding a mixing parameter ,the mixture of two distributions would be more efficient ,and representative of the data than the single distributions. A group of statistical properties of the mixture distribution were studied , such as the probability function ,the survival function and the failure rate function .classical estimation method were used to estimate the parameters of the mixture distribution, which are maximum likelihood of method ,the cramer –von mises method ,The method were compared using monte carlo simulations real data were taken regarding drug –resistant tuberculosis (TB) Multi Drug Resistance(MDR) methods were compared using the MSE statistical criterion ,and the result should a preference for the method cramer-von mises for having the lowest MSE
The impact of forward-looking disclosure on the transparency of integrated reports through: the governance system, business model, and rules for preparing and presenting integrated reports.
Authors: Lateef Riham , Ghafouri Emad
Published: March 2024

The research aims to demonstrate the extent to which future disclosure contributes to influencing the transparency of the governance system, the business model, and the rules for preparing and presenting integrated reports. A questionnaire was conducted to clarify the extent to which future information can enhance the transparency of integrated reports. The form was distributed to a group of beneficiaries of future information in the Iraqi stock market, including investors for the most part, and some auditors. The most important conclusions that were reached are that the relationship is positive and has a moral impact between future disclosure, the governance system, and the business model. And the rules for preparing and presenting integrated reports. The most important recommendations are the need for all economic units to hold awareness sessions that expand the awareness of management and its employees about what future disclosure is, the mechanism for preparing such information, how to include it in integrated reports, and its importance