bluuebunny/crossref_metadata_2025_split huggingface dataset:
Green Mediated Synthesis of Zinc Oxide Nanoparticles using Tamarind Bark Extract and their Applications in Textile Dye Degradation and Antimicrobial Studies
Authors: Gingiguntla Baskar , Akkiniraj Chandrasekar Abirami , Selvan Cruz Sebastian Antony 
Published: December 2023

ZnO nanoparticles were synthesized using tamarind bark extract as a green reducing agent in alkaline medium. The tamarind bark solution acts both as a stabilizing and a reducing agent which regulates the size and the shape of the green synthesized zinc oxide nanoparticles. The progressive growth of ZnO nanoparticles was monitored by using UV-visible spectral studies. A sharp peak at 349 nm indicates the formation of spherical shaped zinc oxide nanoparticles. The size and shape of the ZnO nanoparticles were observed using scanning electron microscopy (SEM). The catalytic behaviour of a ZnO nanoparticle was studied for the degradation of textile dyes like methylene blue and Congo red and observed that the degradation reaction follows pseudo first-order kinetics with a rate constant k =0.0331 min-1, 0.0283 min-1 and 0.1175 min-1, 0.1167 min-1, respectively for ZnO nanoparticles at 50 µg and 100 µg. The antimicrobial activity of ZnO nanoparticles was also tested for various Gram-positive, Gram-negative bacteria and fungi in which higher zone of inhibition was observed for Gram-negative microorganism.
Graphene’s Role in the Clean-Up Act: Progress in Industrial Wastewater Treatment
Authors: Adhikari Chandan , Ghosh Sramana , Das Prabir Kumar 
Published: December 2023

Water scarcity and environmental pollution are the two pressing global challenges that demand innovative solutions. In recent years, graphene-based nanomaterials have emerged as promising candidates for revolutionizing the field of water purification, particularly in the treatment of industrial wastewater. This review article, the first part of a two-part series, comprehensively explores the applications, synthesis methods and mechanisms of graphene-based nanomaterials for industrial wastewater treatment. Industrial activities generate vast quantities of wastewater contaminated with a myriad of organic and inorganic pollutants, heavy metals and dyes. Traditional water treatment methods often fall short in efficiently removing these contaminants, leading to significant environmental repercussions. In contrast, graphene-based nanomaterials exhibit exceptional properties, including a high specific surface area, excellent electrical conductivity and superior mechanical strength, making them highly attractive for wastewater treatment applications. This article begins by providing an overview of the properties of graphene and its derivatives, such as graphene oxide (GO) and reduced graphene oxide (rGO), which form the foundation of graphene-based nanomaterials. Our discussion focuses on the many approaches to the synthesis of these nanomaterials, with particular attention paid to their scalability, cost-effectiveness, and influence on the environment. This review focuses on the various applications of graphene-based nanomaterials in the in the removal of organic pollutants and dyes through adsorption, coagulation and photocatalysis. The unique structural and chemical properties of graphene-based nanomaterials enable them to selectively adsorb pollutants, even in the presence of competing ions, making them highly efficient in complex wastewater matrices. Furthermore, we explore the mechanistic aspects of pollutant removal by graphene-based nanomaterials, elucidating the role of surface functionalization, intermolecular interactions and photocatalytic processes. In addition to their pollutant removal capabilities, graphene-based nanomaterials also exhibit remarkable regeneration potential, making them economically sustainable for long-term industrial wastewater treatment applications. The challenges associated with large-scale implementation, including cost considerations, environmental impact assessments and regulatory compliance are also discussed. This review aims to provide a comprehensive understanding of the current state of research in graphene-based nanomaterials for industrial wastewater treatment. By critically evaluating the existing iterature, this review serves as a valuable resource for researchers and practitioners seeking to advance sustainable and effective strategies for the industrial wastewater treatment through the integration of graphene-based nanomaterials.
Novel Amide Derivatives of Pyrimidinediones: Design, Synthesis, Characterization, Biological Assessment, ADMET and in silico Docking Studies
Authors: Sambaru S Kalyani , Kurian Mary Nygi , S Manju Devi , S Shalini Devi , Akhil I. , Aruna Priya L. , Prashanthi B. , Korripally Premsagar 
Published: December 2023

In an attempt to synthesize new chemical entities with promising biological activity, a set of six novel pyrimidinedione analogues 6(a-f) was prepared. The compound 4 was coupled with different amines by using HBTU as a coupling reagent. The derivatives were characterized by 1HNMR,13CNMR and HRMS. The analogues were evaluated for their antibacterial and antioxidant activity. The DPPH and ABTS methods were used to test the antioxidant activity of the moieties. Among the six pyrimidinedione analogues, 6b, 6d, and 6f exhibited significant antioxidant effects. The paper disc diffusion method was adopted to evaluate the antibacterial activity of the samples. The analogues 6b, 6c and 6e exhibited potency against gram-negative and gram-positive pathogens. Further, to evaluate the binding abilities of the analogues to the protein active sites, molecular docking studies were performed. The results of the docking studies were found to be consistent with the antibacterial potential of the analogues. The efficacy of these analogues provides insight into their use as novel antioxidant and antibacterial agents.
Blue Swimming Crab’s Conservation Area Determination in The North of Java Sea Using Reproductive Indicator
Authors: Putri Novianingrum Milka , Hartati Retno , Pribadi Rudhi , Käll Sofia , Redjeki Sri 
Published: January 2024

Despite being operated on a small scale, Blue Swimming Crab (BSC), Portunus pelagicus fishery substantially contributes to Indonesia's fisheries as the country's third-largest export commodity after tuna and shrimp. The high of BSC’s demand led to pressure on its stock. Hence a conservation area is needed to be set up, in this study, was proposed using reproduction indicators. with the case study of BSC Stock in Keboromo Waters, Pati Regency, North Central Java. The samples were collected from 38 sampling points at a distance of 2-12 miles from the coastline during November-December 2022 using collapsible crab traps. A reproduction observation on female crabs was carried out on their carapace width and gonad maturity stage. The data then were analyzed for the percentage of egg-berried females (EBF), size at first maturity (Lm) and first captured (Lc), and their spawning potential Ratio (SPR). This study found that the mature crabs (GMS2) in November and December were higher than in other stages while the proportion of ovigerous females (EBF) in December was higher than in November. At several sampling points, the size at first captures (Lc) was higher than that at first maturity (Lm) indicating a decrease in resource stocks due to a delay in the recruitment process. SPR of 19% showed that reproductive potential should be maintained before recruitment is limited, therefore based on the existence of EBF in particular sampling points it is recommended three conservation areas as a temporary no-take zone in BSC fishing ground in Keboromo Watres, Pati Regency.
Acute lupus pneumonitis resembling miliary tuberculosis: A case-based review
Authors: Li Xin , Wang Yuan , Zhang Baoyu , Jia Xiaoxia , Mu Lin , Ke Jing 
Published: January 2024

Abstract
Systemic lupus erythematosus (SLE) is an autoimmune disease involving multiple systems and organs, with pulmonary involvement known to be associated with disease prognosis and mortality. Acute lupus pneumonitis (ALP) resembling miliary tuberculosis (TB) is rare. Here, we present a case of ALP mimicking miliary TB and review the literature. A 19-year-old male student was referred to our hospital with fever. Although the patient met the diagnostic criteria for SLE, diffuse miliary nodules in both lungs were observed on a chest computed tomography scan. A series of tests, including pathological testing of bronchoscopy brushes, T-lymphocyte culture + interferon assay (A + B), tuberculin test, detection of mycobacterium TB DNA, and acid-fast bacilli smear in bronchoalveolar lavage fluid, were unable to confirm the presence of TB infection. We considered the patient to have ALP. After beginning ALP therapy, his symptoms disappeared, and the imaging and hematological results returned to normal. Miliary TB and ALP have similar clinical manifestations and imaging changes, which make diagnosis difficult. This case highlights the need to ensure accurate diagnosis and treatment to improve prognosis.
Hydrothermal synthesis of Cu2CoSnS4 nanoparticles: characterization and their applications of electrochemical, antibacterial and photocatalytic performances
Authors: Manjula Selvam , Sivakumar Ganesan , Dhamodharan Panneerselvam , Dinesh Ayyar , Jaganathan Saravana Kumar , Ayyar Manikandan 
Published: January 2024

Abstract
A hydrothermal technique was used to successfully synthesize tetragonal Cu2CoSnS4 (CCTS) nanoparticles and investigate the effect of various thiourea concentrations on structural, morphological and optical properties. XRD analysis revealed the formation of tetragonal CCTS nanoparticles and the average crystallite size (nm) varied from 26 to 40 nm. The Raman studies confirmed the vibrational modes of the CCTS nanoparticles. The FE-SEM images revealed that the thiourea concentrations induced morphological changes in the CCTS nanoparticles, which exhibited the nanosheets changing into spherical structures. TEM images indicated that the CCTS sample had a spherical structure and the SAED pattern demonstrated a polycrystalline nature. The valance states of metallic species, such as Cu+ and Co2+ were further confirmed by XPS. The optical band gap (1.53 eV) was calculated from UV–Visible data and the obtained bandgap value from the literature. The electrochemical measurements of the CCTS TU-10 electrode exhibited pseudocapacitive behavior with a notable specific capacitance of 198 Fg−1 at a scan rate of 10 mV/S along with favorable electrocatalytic activity. In the photocatalytic application, when compared to MB dye (78 %), the CCTS catalyst was found to have a higher degradation efficiency toward CV dye (84 %). For antibacterial studies, the Vibrio parahaemolyticus bacteria exhibited the maximum zone of inhibition at 20 mm for 100 μg/ml. Finally, the experimental results suggested that the synthesized CCTS nanoparticles had better electrochemical, photocatalytic, and antibacterial properties.
Development of Educational Game-Based Student Worksheets on Reproductive System Materials to Improve Student Interest and Learning Outcomes
Authors: Nikmah Nurul Habibatun , Utami Nur Rahayu 
Published: January 2024

Learning media is an important thing that plays a very important role in the learning process in the classroom. Based on the results of the interview, it is known that the learning media at SMA N 1 Kendal still uses limited sources, namely package books and Student Worksheets which are still conventional. The speaker mentioned that one of the materials that were considered difficult was the Reproductive System material. The development of educational game-based Student Worksheets (LKPD) is needed to overcome problems that arise. This study aims to determine the validity of LKPD media and the effectiveness of using educational game-based LKPD on Reproductive System material in increasing student interest and learning outcomes. The research was designed with 4D research methods: Define, design, develop, and disseminate. The research design used is a one-group pretest-posttest design. The sampling technique uses the purposive sampling method. The validity of the LKPD developed gets very feasible criteria for use for learning media on the Reproductive System material. The results of LKPD validation obtained a percentage of 89.85% from media experts, and 97.5% from material experts, both of whom are in the very decent category. Validation results by students obtained a percentage of 81.47% with the category of very decent. Analysis of learning outcomes obtained an N-gain score of 74.75% with medium and high categories and for classical completion, students obtained results of 85.04%. Based on the results of research and data analysis that has been carried out, it was concluded that LKPD based on educational games on the Reproductive System material is suitable for use as a learning medium and is effective in increasing student interest and learning outcomes at SMA Negeri 1 Kendal.
3D kinematic analysis of salto backward in acrobatic rock and roll: a case study
Authors: Chlapcová Adéla , Olej Peter , Kyselovičová Oľga 
Published: December 2023

Background and Study Aim. The aim of the study was to determine and compare basic kinematic characteristics in the key phases of the acrobatic element Salto backward tucked.
Material and Methods. The research sample was created from two couples of the acrobatic rock and roll category Main class free style. The time, spatial, and time-spatial characteristics for both couples were determined based on a three-dimensional kinematic analysis. Measurements were carried out with Simi Motion 3D. The acrobatic element Salto backward tucked was chosen based on the fact that it is usually learned as the first overturn acrobatic element with the airborne phase.
Results. In the time duration of the acrobatic element, a very similar duration was observed for both couples (CZ couple: 3.59 s and SK couple 3.55 s). The maximal height of the center of gravity the partner from the Czech Republic reach 3.54 m and partner from the Slovak Republic 3.35 m. The biggest difference noticed was between the male partners 14.59° in knee angle in the staff phase. Among the female partners, a difference was noted in the angle between the torso and the vertical plane at the moment of the end of the vertical displacement, when SK female partner has twice as much deviation of the torso, by exactly 19.49°. In the staff phase, differences in acceleration were also observed, when the male partner (16.56 m.s-2) and female partner (25.08 m.s-2) from the Slovak Republic achieved higher maximum acceleration. In the airborne phase was the biggest difference between female partners in the culmination point, namely in the angle in the knee joint (35.98°) and the angle between the torso in the vertical plane at the moment of opening the somersault (25.52°).
Conclusions. The findings showed similarities and differences in various aspects of the performance, providing valuable insights into the kinematic structure of this acrobatic element in acrobatic rock and roll. Our study should contribute to the extension of knowledge of the kinematic structure of acrobatic element in acrobatic rock and roll.
Aktivitas Anak Pada Penggunaan Media Pasir Berwarna Hubungannya Dengan Kemampuan Sains Anak
Authors: Muftie Zaenal , Mulyani Leni Sri 
Published: December 2023

Penelitian ini bertujuan untuk mengetahui aktivitas anak pada penggunaan media pasir berwarna, kemampuan sains anak, dan hubungan antara aktivitas anak pada penggunaan media pasir berwarna dengan kemampuan sains anak. Metode penelitian yang digunakan adalah korelasional dengan pendekatan kuantitatif. Subjek pada penelitian ini yaitu peseta didik kelompok B RA Al-Kautsar Panyileukan Bandung yang berjumlah 15 orang. Teknik pengumpulan data penelitian ini menggunakan teknik observasi, unjuk kerja, wawancara, dan dokumentasi. Nilai hasil perhitungan menunjukkan bahwa aktivitas anak pada penggunaan media pasir berwarna diperoleh nilai rata-rata sebesar 75. Angka tersebut berada pada rentang 70 – 79 dengan kategori baik. Sedangkan kemampuan sains anak diperoleh nilai rata-rata sebesar 74. Angka tersebut berada pada rentang 70 – 79 dengan kategori baik. Hubungan antara aktivitas anak pada penggunaan media pasir berwarna dengan kemampuan sains anak Kelompok B RA Al-Kautsar Panyileukan Bandung diperoleh angka koefisien korelasi sebesar 0,78 berada pada rentang 0,60 – 0,79 yang artinya memiliki tingkat hubungan yang tinggi. Hasil uji signifikansi diperoleh harga thitung = 4,44 > ttabel = 2,16 artinya hipotesis nol ditolak dan hipotesis alternatif diterima. Adapun besar kontribusi atau pengaruh aktivitas anak pada penggunaan media pasir berwarna terhadap kemampuan sains sebesar 60,84%. Hal ini menunjukkan masih terdapat 39,16% faktor lain yang mempengaruhi kemampuan sains anak di RA Al-Kautsar Panyileukan Bandung.
Fiction vs. Reality: How Students Discover Real-Life Representations in Prose Using Engaged Reading
Authors: Sugiarti  , Prihatini Arti 
Published: December 2023

Background: The reading of fiction texts requires intense effort to integrate mind, emotion, and intrinsic reading motivation, in order to discover real-life representations. There is limited research in this area.
Purpose: This study employs the engaged reading strategy combined with discovery learning, in order to investigate improvements in students’ competence in prose appreciation.
Method: This study used a mixed-method design. Thirty-two Indonesian Language Education students participated in the study. Data was collected using student worksheets, observation, and semi-structured interviews. Data analysis was conducted by identifying and interpreting the results of prose appreciation for each reading activity.
Results: This study found that while explaining the theme and through description students were able to activate prior knowledge. The students' reading motivation mainly focused on the intrinsic element of stories. They clearly understood the plot, characterizations, and messages, but supporting details varied because of the differences in students’ knowledge, experience, and social background related to short stories. In the post-reading stage, students revealed new knowledge and mental imagery. Based on our findings, engaged reading combined with discovery learning can enrich students' experience and ability to elaborate information, as well as to discover new knowledge about real-life representation in prose.
Conclusion: Based on the research findings, teachers and lecturers are able to utilize the engaged reading strategy combined with discovery learning to promote students’ ability to read literature. Further research should involve more diverse participants. Experimental research could also examine the advantages and disadvantages of engaged reading and discovery learning.
Creencias sobre Tecnología Educativa: una mirada desde la biografía escolar y universitaria de una maestra en formación inicial / Beliefs about Educational Technology: a view from a pre-service teacher biography in school and university
Authors: Fraga Varela Fernando , Gewerc Barujel Adriana 
Published: January 2024

Se presenta una investigación que analiza las creencias sobre Tecnología Educativa construidas por futuros profesores a lo largo de su historia de vida a través de estudio de casos. Los datos se recogieron a través de entrevistas en profundidad realizadas en dos etapas, la primera, antes de que asuman las prácticas pre-profesionales y la segunda, inmediatamente después de las mismas. El trabajo permite recuperar una serie de creencias que se derivan de la biografía. Las conclusiones aluden a la impronta de los procesos biográficos, sobre todo en relación a las creencias construidas en los primeros años de escolarización que no son relativizadas durante la formación inicial. Estas creencias mantienen su vigencia en la formación inicial y predominan sobre los conocimientos adquiridos cuando se llevan adelante actividades de enseñanza. En este trabajo se analiza la biografía escolar y universitaria del caso de Emma.AbstractWe present a research on beliefs about Educational Technology built by pre-service teachers throughout life story with case study. Data were collected through in-depth interviews in two stages, first, before they take the pre-professional practices and second, immediately after them. The work on biographies has allowed identify a variety of beliefs. The conclusions show the importance of the biographical processes, especially in relation to the beliefs constructed in the early years of schooling are not relativized during initial training. These beliefs are still valid in the teacher education process and predominate over the knowledge acquired when teaching activities are carried out. In this paper is analyzed Emma's biography in relation to school and university.
DURHAM AND NORTHUMBERLAND ON THE TOPOGRAPHIC MAPS WILLIAM SMITH USED AS MANUSCRIPT MAPS IN THE FIELD AND ON HIS PUBLISHED MAPS
Authors: MCINTYRE ROY W. 
Published: January 2024

ABSTRACT
William Smith (1769–1839) chose large scale topographic manuscript maps for recording his field observations. Those for the northeastern counties of Durham and Northumberland were at one inch to the mile. They were made by Andrew Armstrong, and published in 1768 and 1769, respectively. The copies acquired by Smith, and colored and annotated by him, are the only early large–scale manuscript maps to have survived. They offer a rare insight into how he carried out fieldwork in counties that were unfamiliar to him, as he began work on what would become his celebrated map of England and Wales with Part of Scotland, first published in 1815. The Durham map has a near complete delineation of the strata, but the Northumberland map has little more than an outline. The stratum Millstone Grit was added on both maps, and the ‘stratum’ Whinstone on the Northumberland map. These were omitted from Smith's 1815 map. On each map, Armstrong plotted lead mines and coal mines then operating. Smith made use of these, particularly on the Northumberland manuscript map. Armstrong gave names to several features on his Northumberland map, which hinted at some mining activity there. This did not escape Smith’s notice. In 1821 Smith, and his nephew John Phillips, began a fresh survey of northern England for the county maps that would form part VI of Smith’s New Geological Atlas. Some information was carried over from the early manuscript maps to later manuscript maps, for which the topographic county maps by John Cary were the base maps. This included some of the geological information that Armstrong had printed.