bluuebunny/crossref_metadata_2025 huggingface dataset:
The Relationship Between Financial Development and Carbon Emissions: A Systematic Review
Authors: Darweesh Feras , Khudari Mohamed , Othman Nor Salwati
Published: July 2023

Purpose: This paper aims to review and analyze the prior research on the relationship between financial development and carbon emissions. As the financial sector develops and the economies grow, carbon emissions are expected to increase. Therefore, it is necessary to identify and understand the factors that contribute to this relationship.
 
Theoretical framework: Recent studies indicate that financial development facilitates and expands businesses, which may cause an increase in carbon emissions; on the other hand, sustainable development of the financial sector may lead to lower carbon emissions through eco-friendly investments.
 
Design/Methodology/Approach: This study will employ a systematic literature review to investigate the relationship between financial development and carbon emissions and analyze how developing and developed countries differ concerning these two factors.
 
Findings: The result showed that empirical studies have produced various, frequently contradicting findings and conclusions. Some studies show a strong positive correlation between financial development, environmental performance indices, and economic growth, while others find a more nuanced correlation.
 
Research, practical & social implications: This study might stimulate additional investigation into green financial development and emission reductions through green investments. Findings could aid in adjusting policies to account for disparities between developed and developing countries' financial-emission relationships. Green financial instruments might encourage eco-investments and reduce emissions. The social advantages include helping to reduce gaps by providing resources and expertise to poorer nations, promoting sustainability, and contributing to climate solutions.
 
Originality/Value: This research thoroughly assesses and analyzes prior research on the relationship between financial development and carbon emissions. Particularly in the context of developed and emerging countries, the study helps to investigate and comprehend the elements contributing to this relationship.
Importance of Electronic Accounting Information Systems in Improving Financial Information Security in Jordanian Electronic Payment and Money Transfer Companies
Authors: Al-Khasawneh Reem Oqab
Published: July 2023

Purpose: The study aimed to assess the level of effectiveness of electronic accounting information systems in enhancing the security and control of financial information in Jordanian payment and electronic transfer companies and its ability to provide reliability. And analyzing the ability of the system used in the payment and financial transfer companies to meet the operational requirements imposed by the regulators of the sector.
 
Theoretical framework:  The theoretical framework dealt with the topics of the study from the security threats of electronic accounting information systems (Jacob, 2012: 67) and the risks of accounting information systems that are related to electronic payment systems, especially information security (Al-Maghribi, 2017). Accounting in reducing the risks of transactions, and the obstacles facing accounting systems in the face of the risks and threats of electronic systems
 
Design/Methodology/Approach: The researcher used the inductive approach by referring to the literature related to the subjects of the study and the deductive approach in the field study by distributing a questionnaire to the electronic payment companies in Jordan. 96 questionnaires were retrieved.  Using the spss program to analyze the data and reach the results
 
Findings: The study Fined that there are factors that help to penetrate the accounting information systems in the Jordanian electronic payment and financial transfer companies. Network communication. Electronic accounting information in enhancing the security of financial information and control over it, and there are (obstacles) in providing security requirements and information control, in electronic payment and financial transfer companies related to the rapid development of electronic financial systems and electronic payment methods and their development.
 
Research, practical & social implications:  This study is considered one of the important and modern topics because electronic payment processes are considered one of the modern concepts with which many risks are associated. This study sheds light on these risks and threats and the ability of the strong accounting system to confront these threats and risks..
 
Originality/Value: The results indicate the importance of the topic and the importance of conducting a study on the risks of electronic payment systems, the threats facing the use of electronic payment methods and the obstacles facing accounting information systems in one of the newly established economic sectors in Jordan, which is the electronic payment companies.
Planning and Furnishing of School Facilities to Support Learning Transformation
Authors: Yokoyama Shunsuke
Published: July 2023

Recently Japanese schools are returning to hands-on experiences, project-based learning, and authentic educational opportunities for children while cultivating environments that encourage students to be innovative and critically thinking through science, technology, engineering, arts, and mathematics (STEAM) education. Given that schools are one of the key learning media, it is crucial to consider the construction and design of the school space in response to the learning transformation in Japan. This paper outlines the preconditions for nurturing a ubiquitous environmental strategy that permits learning at anytime, anywhere, by anybody, and about anything.
Prototipe Chromameter untuk Deteksi Bumper Berbasis Raspberry Pi-4 dan Sensor AS7341
Authors: ANAM FAJAR CHOIRUL , SAMSURI FAISAL , SIMATUPANG JONI WELMAN
Published: July 2023

ABSTRAKAda kebutuhan untuk peningkatan kualitas kontrol pengecekan akurasi warna bumper yang diproduksi di PT. Sugity Creatives. Kebutuhan ini disebabkan oleh berbagai pekerjaan repetitif, tidak efisien, dan relatif lama. Sesuai pengamatan, pengecekan membutuhkan waktu 45 detik, validasi data manual selama 15 detik dan pencatatan di kertas selama 60 detik. Sehingga total proses adalah 120 detik. Di artikel ini, kami mengusulkan sebuah prototipe menggunakan Konica Minolta CR400 chromameter. Prototipe ini terdiri dari dua komponen utama yaitu Raspberry Pi-4 sebagai pengontrol dan penyimpan data, dan sensor spektrometri AS7341 untuk mengukur spektrum bumper setelah selesai dilakukan pengecatan. Berdasarkan hasil pengujian, prototipe mampu mereduksi waktu inspeksi kualitas dari 120 detik menjadi 40 detik, termasuk pengukuran, validasi warna, dan juga pencatatan di spreadsheet. Validasi juga memiliki akurasi 100% sesuai dengan hasil validasi chromameter CR400 setelah prototipe dikalibrasi dengan sampel bagus dan reject. Namun, risiko kesalahan manusia selama perekaman data menyebabkan kesalahan validasi mungkin tidak dapat dihindari.Kata kunci: Raspberry Pi-4, AS7341, Chromameter, Spektrometri, Sensor ABSTRACTThere is a need to improve the quality control process efficiency for bumper color accuracy checking at Sugity Creative Companies. This need caused by several repetitives, inefficient, and relatively working time. As we observed, there is 45 seconds for checking process, 15 seconds for manual validation, and 60 seconds for data writing on paper. Thus, total processing time is 120 seconds. In this paper, we propose an improvement through a prototype using Konica Minolta CR400 chromameter. This prototype consists of two main components, namely Raspberry Pi-4 as controller and storage, and AS7341 spectrometry sensor for measuring the spectrum of the bumper color after being painted. According to our experimental result, prototype can reduce the inspection quality time from 120 to 40 seconds over the measurement, color validation, and data recording in the spreadsheet. Validation also has 100% accuracy compared to the CR400 chromameter after it is calibrated to the good and rejected samples. Moreover, the human error risk during the data recording caused the validation error is might inevitable.Keyword: Raspberry Pi-4, AS7341, Chromameter, Spectrometry, Sensor
Analisis ELCB Sebagai Proteksi Tegangan Sentuh pada Pembumian Sistem TT
Authors: Sunarto Sunarto , Hikmat Yudi Prana , Sudrajat Sudrajat
Published: July 2023

ABSTRAKBahaya tegangan sentuh bisa terjadi apabila manusia menyentuh bagian yang bertegangan secara langsung maupun tidak langsung. Sentuhan langsung terjadi apabila manusia menyentuh secara langsung bagian aktif, sedangkan sentuhan tidak langsung bisa terjadi bila manusia menyentuh bagian konduktif terbuka (BKT) dari peralatan yang bertegangan karena adanya arus bocor. Manusia tentunya tidak tahu bahwa bagian aktif maupun BKT dari peralatan tersebut bertegangan dan manusia menyentuh bagian tersebut secara sengaja maupun tidak sengaja. Oleh karena itu perlu adanya proteksi terhadap tegangan sentuh langsung dan tidak langsung. Proteksi yang biasa digunakan pada instalasi listrik adalah ELCB dengan rating arus 30 mA. Penelitian ini bertujuan untuk menganalisa proteksi tegangan sentuh langsung dan tidak langsung menggunakan ELCB pada pembumian sistem TT (Terre-Terre) dimana pembumian titik netral trafo dan pembumian peralatan dipasang secara terpisah. Penelitian ini bisa membuktikan bahwa ELCB bisa digunakan sebagai tegangan sentuh langsung dan tidak langsung denga waktu kerja instanataneous.ABSTRACTDangers of touch voltage can occur if humans touch the live parts directly or indirectly. Direct touch occur when humans touch the active part directly, while indirect touch can occur when humans touch the bare conductive part (BKT) of the equipment with voltage due to leakage current. Humans certainly don't know that the active or BKT of the equipment are live and than humans touch these parts intentionally or unintentionally. Therefore, there is a need for protection against direct and indirect touch voltages. The armature commonly used in electrical installations is an ELCB with a current rating of 30 mA. This study aims to analyze direct and indirect touch voltage protection using ELCB on TT (Terre-Terre) sistem earthing where the transformer neutral point grounding and equipment grounding are Installed separately. This research can prove that ELCB can utilized as direct and indirect touch voltage with instantaneous working time.
Mimicry: Implementasi Karakteristik Alam pada Desain Kursi Ikonik dan Kontemporer
Authors: Havier Maugina Rizki
Published: July 2023

ABSTRAKMimicry dari karakteristik alam banyak ditemukan dalam teknologi dan desain, contohnya functional Mimicry sayap burung dalam implementasi bentuk sayap pesawat terbang. Mimicry dalam desain merupakan proses menghasilkan sebuah objek dengan meniru karakteristik dari objek lain yang sudah ada sebelumnya untuk menghasilkan karya yang unik, fungsional, dan tematis. Dalam pengembangannya di dunia desain kontemporer, bentuk implementasi karakteristik alam pada kursi pun semakin beragam seiring dengan perkembangan informasi dan teknologi pada industri tersebut. Penelitian ini mengkaji objek-objek furniture kursi ikonik berkarakteristik alam dan mengkaji perkembangan desain kursi kontemporer yang juga berkonsep sejenis dengan mengklasifikasikan implementasinya ke dalam tiga tipe Mimicry diantaranya Surface Mimicry, Behavioural Mimicry, dan Functional Mimicry. Pada akhir penelitian diketahui bahwa sejak masa kursi ikonik hingga pada kursi kontemporer berkarakteristik alam, baik bentuk, konsep, dan fungsi dari kursi tersebut sudah beragam hingga menambah nilai seni diatas nilai fungsionalnya.Kata kunci: Mimicry, karakteristik alam, desain, furniture, kursiABSTRACTMimicry from nature characteristic is common in design and technology, for example functional Mimicry on birdâ€™s wing implemented to airplane wing. Mimicry in design is a process to imitate characteristic of an object to produce another object which unique, functional, and thematic. As the growth of information and technology elevated more and more, in the world of contemporary design the implementation of nature characteristic to Chair is increasingly diverse. This research study iconic Chairs with nature characteristic and the development of contemporary Chairs akin, and then classify it into three type of Mimicry which is Surface Mimicry, Behavioural Mimicry, and Functional Mimicry. The result is to be discover that since the iconic Chair era until contemporary Chair era with nature characteristic theme, whether its form, concept, and function of the Chair, it is so diverse as far as enhance the artistic value than its function only.Keywords: Mimicry , nature characteristic, design, furniture, Chair
Pengaruh Panel Surya Bentuk Flat dan Flexy Terhadap Daya Pengisian Baterai Sepeda Listrik
Authors: Asrori Asrori , Jatmiko Faizul Ahmad , Hidayat Mohammad Noor , Perdana Dony
Published: July 2023

ABSTRAK Perkembangan dunia global dan isu emisi nol (zero emmision) telah menjadi blue print energi dari semua negara. Salah satunya adalah terobosan teknologi transportasi yang ramah lingkungan. Dalam beberapa tahun terakhir, teknologi kendaraan listrik telah berkembang pesat. Selain dari desain dan performansi, konsep hybrid panel surya dengan kendaraan listrik juga banyak dilakukan oleh banyak peneliti. Oleh karena itu, penelitian ini bertujuan untuk menganalisis performansi pengisian baterai pada sepeda listrik yang dihasilkan oleh dua bentuk panel surya yang berbeda (flat dan flexy). Metode penelitian true experimental dilakukan dengan monitoring data dari sensor tegangan, arus, dan daya listrik yang dihasilkan panel surya. Sedangkan radiasi matahari diukur dengan solar power meter. Daya listrik yang dihasilkan panel surya digunakan untuk pengisian baterai sepeda listrik. Hasil penelitian menunjukkan bahwa pada radiasi matahari maksimum terjadi pada jam 13.00 WIB sebesar 1008 W/m2. Panel surya bentuk flat menghasilkan daya listrik sebesar 58,94 Wh Sedangkan bentuk flexy sebesar 44,87 Wh. Sehingga panel surya bentuk flat lebih effisien dibandingkan dengan flexy untuk pengisian baterai pada sepeda listrik.Kata kunci: panel surya flat, panel surya flexy, daya pengisian, baterai, sepeda listrikABSTRACTThe development of the global world and the issue of zero emissions has become an energy blueprint for all countries. One of them is the breakthrough of environmentally friendly transportation technology. In recent years, electric vehicle technology has developed rapidly. Apart from design and performance, the concept of hybrid solar panels with electric vehicles is also being carried out by many researchers. Therefore, this study aims to analyze the charging performance of electric bicycle batteries produced by two different forms of solar panels (flat PV and flexy PV). The true experimental research method was carried out by monitoring data from sensors of voltage, current, and electric power generated by solar panels. While solar radiation is measured with a solar power meter. The electricity generated by the solar panels is used to charge the electric bicycle battery. The results showed that the maximum solar irradiation occurred at 01.00 pm at 1008 W/m2. Flatform solar panels produce electricity of 58.94 Wh while flexible form 44.87 Wh. Therefore, flat solar panels are more efficient than flexy for charging batteries on electric bicycles.Keywords: solar panel, flat PV, flexy PV, charging power, battery, electric bicycle
SOCIO-PEDAGOGICAL TECHNOLOGIES OF VALUE ORIENTATION AND SOCIALIZATION: SYNERGETIC APPROACH
Authors: S.A. Raschetina , A.D. Abashina , E.I. Sundukova , Y.V. Mikhailova
Published: July 2023

Introduction. Scientists tend to think that synergy, analyzing the "chaos -order" relationship in different spheres of social and natural world, acquires a special role in understanding modern society and the position of a person in it. The concepts of synergy (attractor, bifurcation, self-organization, entropy) and its principles (nonlinearity, instability, openness) applied to the analysis of the social situation of a child's development allow a deeper understanding of the coexistence of processes of randomness and orderliness in the field of his socialization and value orientation. The concepts also allow a new look at both the structure of socio-pedagogical activity and socio-pedagogical technologies.
The purpose of the study - to characterize (on the basis of synergetic concepts) the technologies of socio-pedagogical activity aimed at the implementation of interaction with the child.
The article presents two types of socio-pedagogical technologies: institutional and individual. Institutional technologies are developed as algorithms based on fixed values - goals, the implementation of which puts being in order, in a state of a more or less stable attractor based on the concept of "how it should be". The synergetic approach promotes the ordering of connections that are significant for the child, bringing the situation of socialization and value orientation into the state of a generally accepted norm. As an evaluation criterion for the transformation of the situation, there is a measure of compliance - non-compliance of the processes of value orientation with generally accepted rules, patterns, norms. Individual technologies are based on the subjective world of inner experiences and are addressed to the meaning of being. Here it is possible to consider the attractor goals as strategic landmarks that allow movement to the result by different trajectories, providing not only the planned, but also an additional result as an element of creativity. This is a creative process of interaction constantly renewed on a personal level to search for the meaning of life. The adequacy – inadequacy of the proposed measures of the uniqueness of the child, the uniqueness of the "case" acts as an evaluation criterion for the situation transformation.
Fundamentos pedagógicos de la educación latinoamericana. Tomo IV
Authors: Esteves Fajardo Zila Isabel , Quiñonez Bustos Jenny Patricia , Vilaña Chungandro Juan Wladimir , Tipán Simbaña Sonia Maribel , Cueva Lasso Margoth Cecilia , Acaro Calva Orgel Hernan , Suárez Urbina Liliana Vanessa , Llerena Paredes Mirian Rosario , Hernández Benítez Selena , Centeno Centeno Olga Janneth
Published: July 2023

La calidad del acto educativo, centrado este concepto en la relación pedagógica del docente-estudiante, depende, en gran medida, de la formación docente, y de cómo éste gestiona, en el aula de clase, el proceso de la enseñanza aprendizaje. El libro Fundamentos pedagógicos de la educación latinomericana, Tomo IV, que hoy entregamos al lector, tiene como propósito contribuir a la formación, desarrollo y fortalecimiento de las competencias en el ámbito pedagógico del docente del siglo XXI. Dentro del presente texto se aborda el estudio de los temas más acuciantes que configuran el que hacer docente en la actualidad. Entre estos podemos mencionar: Las teorías que cimientan el aprendizaje, los conceptos de pedagogía, educación y didáctica, se describen los principales modelos didácticos contemporáneos, se estudia el enfoque por competencia, se indaga la temática de la diversidad cultural, el currículo y la educación inclusiva, se examina el rol de las tecnologías que apoyan el aprendizaje y el conocimiento en el contexto educativo, se estudia el tema de la cultura digital, el currículo y la alfabetización digital, entre otros importantes tópicos del debate académico educativo. Dentro de los factores que evidencian la baja calidad educativa que se imparte en algunos centros escolares en Latinoamérica, destaca la ya obsoleta aplicación de métodos tradicionales y didácticas que no está acorde con los avances de la tecnología de la información y la comunicación, así como también, de las necesidades que en el ámbito de la formación del docente se requieren en la actualidad. Los autores de este libro están convencidos, y así lo exponen ante la comunidad académica, que el docente, cualquiera sea el nivel de la escolaridad de su ejercicio profesional, tiene un papel muy importante que desempeñar en el mejoramiento cualitativo y cuantitativo de la educación, en la medida que contribuya, con la investigación, la teoría y la práctica cotidiana, a romper los viejos paradigmas que han impedido y paralizado en el presente, los procesos de cambio y renovación pedagógicos del desarrollo educativo.
Recobrimento de apatitas “in vitro” sobre titânio – influência do tratamento térmico
Authors: Vercik Luci Cristina de Oliveira , De Assis Camila Molena , Lia Fook Marcus Vinicius , Dos Santos Márcio Luiz , Guastaldi Antonio Carlos
Published: July 2023

Titânio comercialmente puro, Ti-cp, e algumas de suas ligas são consideradas muito importantesna área médica devido sua excelente biocompatibilidade e propriedades mecânicas. Recentemente, foidesenvolvido um método químico, relativamente simples, para induzir a bioatividade desses materiaismetálicos inertes, cujo princípio é imitar as condições biológica para obtenção do material desejado. Estatécnica denominada biomimético, foi utilizada para modificar a superfície do Ti-cp através do depósito deuma camada de apatita. O objetivo principal deste trabalho foi estudar a influência do tratamento térmicona evolução da cristalinidade das fases depositadas. Os recobrimentos de apatitas, com tratamentostérmicos entre 400 e 600 °C, mostraram através das técnicas de difração de raios-X e microscopia eletrônicade varredura, uma baixa cristalinidade semelhante às apatitas biológicas. Acima de 700 °C, os recobrimentosde apatita mostraram-se mais cristalinos apresentando uma mistura de fases de hidroxiapatita, fosfatooctacálcico e fosfato de magnésio.
Determination of Copper, Iron, Nickel and Zinc in fuel kerosene by FAAS after adsorption and pre-concentration on 2-aminothiazole-modified silica gel
Authors: Roldan Paulo dos Santos , De Alcântara Ilton Luiz , Rocha Júlio Cesar , Padilha Cilene do Carmo Federici , Padilha Pedro Magalhães
Published: July 2023

Silica gel chemically modified with 2-Aminotiazole groups, abbreviated as SiAT, was usedfor preconcentration of copper, zinc, nickel and iron from kerosene, normally used as a engine fuel forairplanes. Surface characteristics and surface area of the silica gel were obtained before and after chemicalmodification using FT-IR, Kjeldhal and surface area analysis (B.E.T.). The retention and recovery ofthe analyte elements were studied by applying batch and column techniques. The experimentalparameters, such as shaking time in batch technique, flow rate and concentration of the eluent (HCl-0.25-2.00 mol L -1 ) and the amount of silica, on retention and elution, have been investigated. Detectionlimits of the method for copper, iron, nickel and zinc are 0.77, 2.92, 1.73 and 0.097 mg L -1 , respectively.The sorption-desorption of the studied metal ions made possible the development of a preconcentrationmethod for metal ions at trace level in kerosene using flame AAS for their quantification.
Application of differential scanning calorimetry in hair samples as a possible tool in Forensic Science
Authors: Ionashiro Elisa Yuki , Hewer Thiago Lewis Reis , Fertonani Fernando Luis , De Almeida Eduardo Tonon , Ionashiro Massao
Published: July 2023

The Differential Scanning Calorimetry (DSC) was used to study the thermal behavior of hairsamples and to verify the possibility of identifying an individual based on DSC curves from a databank. Hair samples of students and officials from Instituto de Química de Araraquara, UNESP wereobtained to build up a data bank. Thus to sought an individual, under incognito participant of this databank, was identified using DSC curves.
Utilização de um eletrodo de grafite recoberto com PbO 2 incorporado em matriz de PVC como eletrodo indicador em titulações coulométricas
Authors: Ramos Luiz Antônio , Cassiano Neila Maria , Capelato Milton Duffles
Published: July 2023

A aplicação de um eletrodo sensível a íons H 3 O + , obtido pelo recobrimento de um eletrodo degrafite com uma membrana polimérica contendo PbO 2 incorporado em uma matriz de PVC (PbO 2 -PVC), como eletrodo indicador em titulações coulométricas de neutralização, foi investigada. As leiturasdos potenciais foram feitas usando o eletrodo indicador de PbO 2 -PVC e para comparação dos resultadosfoi usado um eletrodo de vidro combinado (EVC). As curvas de titulação monitoradas com o eletrodode PbO 2 -PVC apresentaram características semelhantes àquelas monitoradas com o EVC e os temposde equivalência obtidos foram concordantes a um nível de confiança de 95%. O eletrodo de PbO 2 -PVCapresentou resposta linear no intervalo de pH 2 a 12 com inclinação de Nernst de -57,6 ± 0,1 mV/pH(r= 0,9998), sendo o tempo de resposta deste eletrodo bem menor do que aquele obtido com o EVC. Oeletrodo de PbO 2 -PVC é de fácil construção, possui baixo custo e tempo de vida útil superior a 4 meses,equivalente a (pelo menos 1200 determinações por membrana polimérica).
Determinação do mecanismo de destruição de células mediado por meso-tetramesitylporfirina, octaetilporfirina, octaetilporfirina de vanadil e luz visível
Authors: Ribeiro Joselito Nardy , Jorge Renato Atilio
Published: July 2023

A Terapia Fotodinâmica é um tratamento clínico empregado no combate a vários tipos detumores. Nesta técnica, o paciente recebe uma certa dosagem de uma substância fotossensibilizadoraque, por sua vez, acumula-se preferencialmente no tecido tumoral. Em seguida irradia-se luz visível,neste tecido, com a finalidade de se excitar o fotossensibilizador. Esta substância, excitada, pode trans-ferir elétrons e/ou energia para o oxigênio, no estado fundamental, gerando espécies reativas de oxigêniocomo o radical superóxido e oxigênio singlete. O primeiro é gerado no mecanismo tipo I, pela transferên-cia de elétrons, e o segundo no mecanismo tipo II, pela transferência de energia. Estas espécies reativasgeram um estresse oxidativo, no tecido tumoral, levando as células cancerígenas à morte. Neste trabalho,foram avaliadas as propriedades fotossensibilizadoras de três porfirinas e constatou-se que as mesmassão capazes de destruir células, na presença de luz e oxigênio. Este evento foi mais pronunciado, napresença de água deuterada, e inibido por supressores de oxigênio singlete, indicando predominânciado mecanismo tipo II.
Synthetic model of a new deoxybenzoin derivative from Deguelia hatschbachii A.M.G. Azevedo
Authors: Magalhães Aderbal Farias , Magalhães Eva Gonçalves , Trazzi Giordano , Valeria Regina de Souza
Published: July 2023

In this paper we describe the synthesis of 2 ́,4 ́-dimethoxy-8-(propyl-2-one)-deoxybenzoin, anew compound employed as a model for the comparison with the respective spectral data for 6’,4-dihydroxy-3’-(3,3- dimethylallyl)-2",2"-dimethylchromene(5",6":5’,4’)-2’-methoxy-8-(propyl-2-one)deoxybenzoin, recently isolated from Deguelia hatschbachii A.M.G. Azevedo. Both compounds have a“propyl-2-one” group attached to C-8 of the deoxybenzoin skeleton, for which there is no precedent inthe literature. The Friedel-Crafts reaction of 1,3-dimethoxybenzene with phenylacetyl chloride furnished2 ́,4 ́-dimethoxydeoxybenzoin, that after reaction with allyl bromide gave 2 ́,4 ́-dimethoxy-8-(allyl)-deoxybenzoin. Wacker oxidation gave the desired model compound in 15% overall yield. The correspondingspectral data reinforced the structure previously determined for the natural product.
Determination of hydrochlorothiazide in pharmaceutical formulations by diffuse reflectance spectroscopy
Authors: Gotardo Mara Andréia , Pezza Leonardo , Pezza Helena Redigolo
Published: July 2023

This paper describes a method for quantitative spot test analysis of hydrochlorothiazide usingdiffuse reflectance spectroscopy. The reflectance measurements were performed analyzing the coloredcompound (l = 585 nm) produced from the reaction between hydrochlorothiazide and p-dimethylaminocinnamaldehyde (PDAC) in acid medium. This reaction occurred on filter paper after heatingto 80oC for 8 minutes. Factorial designs allowed varying multiple reaction factors simultaneously in orderto obtain the best reaction conditions. These factors included heating temperature, heating time, acidvolume and PDAC volume. The linearity was studied in the range of 3.36x10 -2 to 1.01x10 -1 mol L -1 with acorrelation coefficient of 0.998. The limit of detection was estimated to be 1.32x10 –2 mol L -1 . Commercialsamples were analyzed using the proposed method and the results were favorably compared with those ofthe United States Pharmacopeia method, showing that quantitative spot test analysis by diffuse reflectancecould be successfully used to determine hydrochlorothiazide in medicines.
Synthesis, characterization and thermal studies of solid state 4-methylbenzylidenepyruvate of some trivalent metal ions
Authors: Mendes Roni Antônio , Bannach Gilbert , Ionashiro Elias Yuki , Ionashiro Massao
Published: July 2023

Solid state compounds of 4-methylbenzylidenepyruvate with Al(III), Ga(III), In(III) and Sc(III)have been synthesized. Complexometry, X-ray powder diffractometry, infrared spectroscopy andsimultaneous thermogravimetry-differential thermal analysis (TG-DTA) have been used to characterizeand to study the thermal behavior of these compounds. The results provided information concerning thestoichiometry, crystallinity, thermal stability and thermal decomposition of these compounds.
Análise voltamétrica do corante têxtil do tipo antraquinona empregando eletrodos de carbono impresso
Authors: Bergamini Márcio Fernando , De Oliveira Fernando Castro Motta , Zanoni Maria Valnice Boldrin
Published: July 2023

O corante reativo Reactive Blue (RB4), que possui como grupo cromóforo uma antraquinona eum grupo diclorotriazina como grupo reativo, foi determinado em níveis de micromol utilizando eletrodosde carbono impresso empregando a técnica de voltametria de pulso diferencial. Foram obtidas respostaslineares entre a corrente de pico e a concentração do corante entre 3,4 x 10 -6 e 3,0 x 10 -4 mol L -1 em soluçãode KCl pH 1,0. Empregando as condições otimizadas para a analise do corante, foi estudada a influênciada temperatura de aquecimento na hidrólise do grupo reativo, monitorando um pico de redução em -1,1 V(vs. carbono impresso).
Synthesis, characterization and thermal studies on solid 3-methoxybenzoate of some bivalent transition metal ions
Authors: Vallejo Adriana Cossu , De Siqueira Adriano Buzutti , Rodrigues Érica Alvarenga Crespo , Ionashiro Elias Yuki , Bannach Gilbert , Ionashiro Massao
Published: July 2023

Solid-state M-3-MeO-Bz compounds, where M stands for bivalent Mn, Co, Ni, Cu and Zn and3-MeO-Bz is 3-methoxybenzoate, have been synthesized. Simultaneous thermogravimetry and differentialthermal analysis (TG-DTA), differential scanning calorimetry (DSC), X-ray powder diffractometry, infraredspectroscopy, and chemical analysis were used to characterize and to study the thermal behaviour of thesecompounds. The results led to information about the composition, dehydration, thermal stability andthermal decomposition of the isolated compounds.
Síntese de hidroxiapatita pelo método sol-gel utilizando precursores alternativos: nitrato de cálcio e ácido fosfórico
Authors: Dos Santos Márcio Luiz , Florentino Ariovaldo de Oliveira , Saeki Margarida Juri , Aparecida Anahi Herrera , Lia Fook Marcus Vinicius , Guastaldi Antonio Carlos
Published: July 2023

A hidroxiapatita [Ca 10 (PO 4 ) 6 (OH) 2 , HA] foi sintetizada utilizando-se a rota sol-gel partindo-se deácido fosfórico e nitrato de cálcio como precursores de cálcio e fósforo, respectivamente e como solventeutilizou-se o metanol na preparação do sol que posteriormente será utilizado na obtenção de recobrimentosde hidroxiapatita sobre substratos de ligas de titânio. O sol permaneceu estável e não ocorreu gelatinizaçãoem temperatura ambiente durante sete dias. O sol transformou-se em um gel branco somente após aremoção do solvente a 100oC. O produto assim obtido foi calcinado em 300°C, 500°C e 700°C ecaracterizou-se por DRX, FT-IR, MEV/EDS e TGA/DSC. As fases de HA sintetizada tornaram-se estáveissem sub-produtos a 700°C. A difração de raios X mostrou que a estrutura apatita é aparente em 300°C. Otamanho do cristal e o teor de HA aumentaram com o aumento da temperatura de calcinação. A análise porMEV mostrou a presença de poros que são importantes para aplicações biomédicas, favorecendo aadesão entre o tecido ósseo neoformado e a apatita sintética, ou seja, osseointegração.
Determination of Hg in water by CVAAS using 2-aminothiazole modified silica
Authors: Silva Fábio Arlindo , De Alcântara Ilton Luiz , Roldan Paulo dos Santos , Padilha Cilene do Carmo Federici , De Araújo Adriana Barbosa , Valente José Pedro Serra , Florentino Ariovaldo de Oliveira , Padilha Pedro Magalhães
Published: July 2023

This paper discusses a rapid and sensitive method developed to determine trace levels ofmercury in natural water samples by cold vapor atomic absorption spectrometry using a preconcentrationsystem composed by mini-column packed with 100 mg of 2-aminothiazol modified silica gel (SiAT)coupled on-line with the spectrometer’s cold vapor generator system. The optimum preconcentrationconditions are also described here. The preconcentrated Hg(II) ions were eluted directly from the columnto the spectrometer’s cold vapor generator system using 100 μL of 2 mol L -1 hydrochloric acid and theretention efficiency achieved exceeded 95%. The enrichment factors determined were 29, 38 and 46using 3, 4 and 5 mL of preconcentrated aqueous solutions containing 400 ng L -1 of Hg. The detectionlimit calculated was 5 ng L -1 . The preconcentration procedure was applied to determine trace levelmercury in spiked river water samples.
Fitotoxicidade de novos álcoois e alquenos derivados do 2α,4α-dimetil-8-oxabiciclo[3.2.1]oct-6-en-3-ona
Authors: Barbosa Luiz Cláudio de Almeida , Maltha Celia Regina Alvares , Demuner Antonio Jacinto , Silva Vanessa Lopes , De Oliveira Fabricio Marques , E Borges Eduardo Euclydes de Lima
Published: July 2023

A reação de cicloadição [4+3] entre o furano e o cátion oxialílico, gerado in situ a partir da 2,4-dibromopentan-3-ona, forneceu o 2α,4α-dimetil-8-oxabiciclo[3.2.1]oct-6-en-3-ona (1). A oxidação catalíticado oxabiciclo 1 com tetróxido de ósmio em presença de peróxido de hidrogênio em excesso levou àformação do acetonídeo 10, a partir do qual foram obtidos os álcoois 2, 11-15, com rendimentos de 23-86%.O tratamento dos álcoois 11-13 com cloreto de tionila, em presença de piridina, resultou nos respectivosalquenos 17 (94%), 18 (89%) e 19 (80%). A atividade herbicida dos compostos foi avaliada sobre odesenvolvimento do sistema radicular de Sorghum bicolor L. e Cucumis sativus L., nas concentrações de100 e 250 ppm.
Síntese e estudo da fotoestabilidade de derivados azalactônicos encapsulados em β-ciclodextrina
Authors: Da Rosa Mauricio Ferreira , Savariz Franciele Cristina
Published: July 2023

Neste trabalho foram sintetizados 12 derivados azalactônicos pela metodologia clássica dePlöchl-Erlenmeyer. Destes, um foi avaliado quanto a fotoestabilidade em solução por meio de experimentosde fotodegradação utilizando agentes encapsulantes e diferentes solventes. Para a irradiação das amostrasfoi empregada uma lâmpada de mercúrio de 80W. Os resultados mostram que a fotodegradação do coranteocorre muito mais rapidamente em solventes polares e que o agente encapsulante é fundamental na suafotoestabilidade.
Analysis of metabolites from plants of the Swartzia genus using chemical indexes: evolutionary tendencies
Authors: Magalhães Aderbal Farias , Tozzi Ana Maria Goulart de Azevedo , Santos Celira Caparica , Magalhães Eva Gonçalves
Published: July 2023

The chemical indexes, suggested by Gottlieb et al., have not been used before regardingevolutionary tendency of species in the Swartzia genus. However, the importance of this work encour-aged for an analysis of the Swartzia genus using the metabolites isolated from nine species. The analy-sis, based on calculated chemical indexes, provided an evolutionary tendency for these plants, whichcorrelates with the classification based on morphological analysis.
A water soluble 3-n-propyl-1-azonia-4-azabicyclo[2.2.2]octanechloride silsesquioxane grafted onto Al/SiO2 surface. Chromium adsorption study
Authors: Arenas Leliz Ticona , Simon Nathália Marcolin , Gushikem Yoshitaka , Costa Tania Maria Haas , Lima Eder Claudio , Benvenutti Edilson Valmir
Published: July 2023

The water soluble material, 3-n-propyl-1-azonia-4-azabicyclo[2.2.2]octanechloridesilsesquioxane (dabcosil silsesquioxane) was obtained. The dabcosil silsesquioxane was grafted onto asilica surface, previously modified with aluminum oxide. The resulting solid, dabcosil-Al/SiO 2 , pres-ents 0.15 mmol of dabco groups per gram of material. The product of the grafting reaction was ana-lyzed by infrared spectroscopy and N 2 adsorption-desorption isotherms. The dabcosil-Al/SiO 2 materi-al was used as sorbent for chromium (VI) adsorption in aqueous solution.
Optimization of Plasma-Assisted Desorption/Ionization-Mass Spectrometry for Analysis of Ibuprofen
Authors: Jamur J. M. S.
Published: July 2023

In medical practice, nonsteroidal anti-inflammatory drugs (NSAIDs) are often used to treat osteoarthritis and rheumatoid arthritis. Ibuprofen is a well-known NSAID, analgesic, and antipyretic medication. This chemical is an active ingredient of several oral medications that are offered in tablet, gel pellet, and syrup forms and has higher efficacy, tolerance, and side effect rates than other compounds, including pyrazolone derivatives. We present a unique plasma-assisted desorption/ionization mass spectrometry (PADI-MS) approach for improving pharmaceutically important solids using an ibuprofen tablet as a model solid sample. The goal of the study is to create an innovative mass spectrometric method that could be used for quick and accurate analysis in the development of pharmaceutically relevant compounds. Sniffer tubes were used to route sample ions into a single quadrupole MS, with each acquisition lasting for 1 minute. Without any prior preparation, samples of ibuprofen tablets were directly exposed to PADI plasma for one minute at an atmosphere pressure. The approach is rapid, easy to use, and needs little to no sample preparation. In this study, the settings were improved by optimization of several parameters, such as plasma power, plasma-to-sample distance, and inner/outer flows of helium carrier gas, which were found to be 8 W, 2 mm, and 284 mL/min, respectively. The PADI-MS method provides a real-time information about structural features on the compounds. Ibuprofen tablets were used as a paradigm for pharmaceutically significant materials and direct PADI-MS analysis without a preliminary sample -treatment appeared to be successful: according to PADI-MS data a medication can be examined after one minute of plasma exposure.
Diametral compression of short cylinders with a central hole as a method for assessing the tear resistance of brittle materials
Authors: Goltsev V. Yu. , Osintsev A. V. , Plotnikov A. S. , Polskij V. I.
Published: July 2023

The possibility of evaluating the tear resistance of brittle materials by diametral compression test of short cylinders (solid and central with a central hole) has been analyzed. The computational analysis was performed by the finite element method using the ANSYS program. It is shown that the stress distribution in a disk with a hole is similar that without a hole but contains disturbances introduced by a stress concentrator in the form of a hole. The normalized values of the maximum first principal stresses for a disk with a hole exceed the values for a disk without a hole by more than 5 times. The experimental analysis was carried out by testing short cylinders, both solid and with a central hole, made of brittle materials: cast iron and graphite. It is noted that the fracture resistance, determined by the formula recommended by the ASTM D3967 – 95a standard, practically does not differ for solid cast iron samples, and for graphite differs by 1.5 times from the true tear resistance of materials; when testing samples with a central hole, the tear resistance differs from the standard values by a factor of 1.5 and almost 2.5, respectively. The different nature of the sample destruction is also noted: slow controlled rupture of cast iron and dynamic destruction of graphite with the corresponding deformation diagrams. The results of testing fuel pellets of uranium dioxide are given as an example of testing real cylindrical samples with a central hole. It is shown that the test results of ARV-1 graphite samples are in good agreement with the test results of fuel samples. Thus, the possibility of testing small-sized short cylinders according to the diametral compression scheme for indirect assessment of the tensile strength of brittle materials has been confirmed. A calculation formula is proposed for an indirect assessment of the tensile strength of brittle materials based on the results of testing small-sized short cylinders, both with and without a central hole according to the diametral compression scheme.
UNDERSTANDING THE PERSPECTIVES OF CINEMA NOVO: A CRITICAL DISCOURSE STUDY IN AGE OF RENAISSANCE IN LATIN AMERICAN CINEMA
Authors: Saha Ruma , Kayal Sharmila , Raghuvanshi Lakhan
Published: July 2023

Cinema is the intrinsic creative expression which has often been reflected with many diversified perspectives. The auteur's perspective to the ‘masala movie, which always fascinates with its inclusive subject matter. It's been always interesting to ponder on how the narratives of cinema are swayed parallel with the conventional one. The filmmakers with their independent perspectives often been seen to focus or take the most untouched grey areas which generally deal with human’s life and endeavors (caste, class, creed, color, ethnicity, engendered social milieu, taboos, socio economic inequalities, grassroots problem, basic amenities, or simply different from the existence of human values with hegemonical counter-narratives been taken into account and reflected in cinema. The very idea of this present study is to understand the cinema culture of Latin American cinema (how it is different from New Wave Movement and Italian Neo Realism). The study focuses on the movement of cinema novo and selects a few notable movies to understand the ideation of narratives. The discourse analysis entails the reasons for the fall down of the movement and problem in order to decipher the meaning. The sole purpose of the study is to know treatment and approach of genre of cinema novo; to understand the metaphors and discourses; and to know the downfall of this movement in spite of always trying to mirror the unseen world to the rest of the world. This study suggests that this cinematic movement is a thorough reflection of the voiceless, poverty stricken and working-class condition of the people which should be taken up with a newer perspective and dimension.
Evaluation Of The Haematology Profile And Blood Chemistry Of Macaca nemestrina (Linnaeus, 1766) At Primate Research Center, IPB University
Authors: Noer Syahbani  , Supiyani Atin , Rosmanah Lis
Published: July 2023

Macaca nemestrina (Linnaeus, 1766) or macaque is a primate that was successfully bred by Primate Research Centre (PRC) IPB University as an effort to conserve and use it as a model animal in biomedical research. macaque with ID. Tattoo 6180 is a male macaque ± 23 years old in a coral cage B which focuses on breeding purposes in captivity to produce offspring. Health evaluation of ID. Tattoo 6180 becomes one of the important things related to those goal. The purpose of this study was to measure the haematological and blood chemistry profile of macaque with ID. Tattoo 6180. The method used in this research is descriptive observational to identify blood cell composition, leukocyte differentiation, and blood chemistry. Based on the measurement results, it is known that the hematologic profiles including White Blood Cell/WBC (7.5×103/µl), Mean Corpuscular Haemoglobin/MCH (23.4 pg), Mean Corpuscular Haemoglobin Concentration/MCHC (33.2 g/dL), and Platelets/PLT (231×103/µl) have values ​​outside the normal range. The results of the leukocyte differential examination showed that the N/L value was 4.68 exceeded the normal value. In addition, the results of blood chemistry measurements including SGOT (119.1 U/L), Calcium (7.0 mg/dL), Phosphorus (37.9 mg/dL), and Cholesterol (87 mg/dL) also have values ​​outside the normal range. Results examination showed that the macaque with ID. Tattoo 6180 was diagnosed as hyperchromic macrocytic / microcytic without anaemia, stress, thrombocytopenia, muscle injury / inflammation of the heart, and hypercholesterolemia. Further examination is needed to establish the macaque health status.
Need Analysis for Developing a Natural Science Learning Website with the Theme of Biotechnology in Improving Digital Literacy
Authors: Berlian Liska , Taufik Annisa Novianti , Triyani Ilvi
Published: July 2023

The development of technological rapidly changes the learning process more broadly. Demands for students or prospective science teachers to improve their digital literacy skills with the help of website-based media are needed in the learning process so that it can take place optimally. The development of biotechnology has also developed rapidly in the last few years, thus demanding that students or prospective science teachers be more responsive to information and be able to present this information interactively. Unfortunately, many students or prospective science teachers are not able to understand biotechnology because it is considered that the concept of biotechnology is difficult to understand. For this reason, it is necessary to have a needs analysis to find out the aspects needed and develop the learning and learning resources needed to improve digital literacy skills and understand the concept of biotechnology. The aim of this study is to analyze the needs of learning media based on a biotechnology theme website that would be developed, so that it can improve the digital literacy skills of students or prospective science teachers. The needs analysis was carried out as a preliminary study on Borg & Gall's research and development methods, which are included in the research and information collecting stage. The analysis of the needs for developing learning tools includes student analysis, concept analysis, task analysis, and learning objectives analysis. This needs analysis is accompanied by a literature review and observation results. The results obtained are a thorough and real needs analysis on the development of a biotechnology theme website to improve the digital literacy abilities of science teacher candidates, which can be applied at the next research and development stage
Development of an Android-Based Mobile Learning Module to Improve the Students Critical Thinking Skills
Authors: Nuri Lu'ailik Nafisa Nuri , Wahyuni Sri , Ridlo Zainur Rasyid
Published: July 2023

Development of an Android-Based Mobile Learning Module to Improve Critical Thinking Skills of Junior High School. This study's purpose to specify the validity, practicality, and effectiveness of an android-based mobile learning module on simple ventures and aircraft to repair critical thinking skills for middle school students. The development of an android-based mobile learning module on the material simple ventures and aircraft is based on requirements for exact teaching materials for 21st-century learning which identically leverage technology, information, and communication. The method utilized in this research is ADDIE model development design which consists of five stages, namely analysis, design, development, implementation, and evaluation. The results indicated that (1) the percentage of validity of an Android-based mobile learning module was 91.83% obtained from an average of three validators, (2) the percentage of the practicality of an Android-based mobile learning module was 95.48%, (3) the effectiveness score of an Android-based mobile learning module is 0.63 which is acquired from the N-gain test and 95.91% from students response questionnaire so that it can be inferred that the Android-based mobile learning module is valid, practical and effective to repair critical thinking skill of junior high school students