bluuebunny/crossref_metadata_2025_split huggingface dataset:
Whole-genome sequencing of Pseudoalteromonas piscicida 2515 revealed its antibacterial potency against Vibrio anguillarum: a preliminary invitro study
Authors: Wang Fenglin , Ghonimy Abdallah , Wang Xiuhua 
Published: May 2023

Abstract
Pseudoalteromonas piscicida 2515, isolated from Litopenaeus vannamei culture water, is a potential marine probiotic with broad anti-Vibrio properties. However, genomic information on P. piscicida 2515 isscarce. In this study, the general genomic characteristics and probiotic properties of the P. piscicida 2515 strain were analysed. In addition, we determined the antibacterial mechanism of this bacterial strain by scanning electron microscopy (SEM). The results indicated that the whole-genome sequence of P. piscicida 2515 contained one chromosome and one plasmid, including a total length of 5,541,406 bp with a G+C content of 43.24%, and 4679 protein-coding genes were predicted. Various adhesion-related genes, amino acid and vitamin metabolism and biosynthesis genes, and stress-responsive genes were found with genome mining tools. The presence of genes encoding chitin, bromocyclic peptides, lantibiotics, and sactipeptides showed the strong antibacterial activity of the P. piscicida 2515 strain. Moreover, in coculture with Vibrio anguillarum, P. piscicida 2515 displayed vesicle/pilus-like structures located on its surface that participated in its bactericidal activity, representing a novel antibacterial mechanism. Nevertheless, 16 haemolytic genes and 3 antibiotic resistance genes (tetracycline, fluoroquinolone, and carbapenem) were annotated, but virulence genes encoding enterotoxin FM (entFM), cereulide (ces), and cytotoxin K were not detected. Further toxicity tests should be conducted to confirm the safety of P. piscicida 2515. The results here provide a new understanding of the probiotic properties and antibacterial mechanism of P. piscicida 2515 and theoretical information for its application in aquaculture.
Design, analysis and construction of a simple pulse duplicator system
Authors: Khalaf Taha Yaseen , Hussein O. , Khalaf AL-Tarboolee Ahmed Y. 
Published: May 2023

One of the most important human diseases that need to be considered in terms of development of the medical engineering devices is cardiovascular disease which is a significant cause of death globally recently. Valvular heart disease is normally treated by restoring or altering heart valves with an artificial one. But the new prosthetic valve designs necessitate testing for durability estimate and failure method. It is significant to simulate the circulation system by the building of a pulse duplicator system. This study is stated by clarifying the parameter and implementation steps of the pulse duplicator system in which the different researchers have utilized the system and tried to explain the design steps of using this system without going into the system design by steps or what are the main part of this system and how can be implemented, tested, and developed individually.
In this design, a DC motor produces, through a hydraulic piston, a flow pulse to the left ventricle chamber model, which is linked with two interchangeable prosthetic heart valves. The computer is used to control and process data from volumetric flow rate and image. The findings show that the linear displacement, the velocity of the piston and the linear acceleration regularly become significant particularly and follows a sinusoidal wave shape during one cycle, when (crank length/connecting rod length) value is equal 0.2 or less. Several sets of measured flow rate readings were obtained by using flow meter sensor YF-S201, results after calibration showed the error rate falls within permissible limits
Climate change forecasting using data mining algorithms
Authors: Khatri Parul , Arjariya Tripti , Shivhare Mitra Nikita 
Published: May 2023

Abstract

Water management is very important for human life sustainability. Rainfall forecasting is one of the most important factors for the water management of an area. A forecast is simply a calculation of what happens in the future based on past information under the assumption that the pattern followed in the past would continue in the future also. This work aims at obtaining forecasting models for the time series data set using conventional models and computational models. Varanasi City's annual climate data for a total of 113 years is used for the analysis. Initially, the individual model is considered and used for forecasting. Later, hybrid models will be considered and a comparison between individual models and hybrid models would be obtained. The individual statistical models to be considered are moving average, exponential smoothing with one parameter, and autoregressive integrated moving average (ARIMA). The forecast is also done individually using the k-nearest neighbor (kNN) and interpolation technique cubic spline. Finally, the best-chosen statistical models and the interpolation model are coupled with kNN to develop hybrid models and with these hybrid models, the forecast is done for the data. All the models will be compared and the best among them will be chosen.
The Pharmaceutical Role of Silver Nanoparticles in Treating Multidrug-
Resistant Bacteria and Biofilms
Authors: Alnsour Ayham R. , Daghmash Rawand M. , Masadeh Majed M. , Alzoubi Karem H. , Masadeh Majd M. , Bataineh Nayef H. , Batayneh Hala H. , Al-Ogaidi Mustafa S. 
Published: May 2023

Background:
According to the WHO, antimicrobial resistance has recently become
worrisome and constitutes an international public health crisis. The advent of multidrug-resistant
bacteria has been implicated in the rise in morbidity and death caused by microbial diseases.
However, the lack of new and effective antibiotics has been associated with the emergence of
drug resistance. This has resulted in worldwide endeavors to advance innovative drugs with
higher efficiency and more sophisticated drug delivery technologies. In addition, the utilization
of nanoparticles as innovative biological substances is considered a worldwide issue of interest.

:
Nanoparticles have the potential to become a vital and viable treatment alternative for treating
drug-resistant illnesses. Nanoparticles contain metallic substances and their oxides, which have
the highest possibility among all nanoparticles and have piqued the curiosity of numerous experts.
Furthermore, using silver nanoparticles in photothermal treatment has attracted much interest.

Purpose:
This review includes knowledge about the problems of drug resistance and the mechanism
of action of silver nanoparticles.

Results:
This review comprehensively assesses the current discoveries for using silver nanoparticles
as antimicrobial medicines in infections caused by resistant microorganisms. Also being
explored as nanomaterials that can react with light (photothermal treatment) to destroy bacteria
and promote improved medication administration and release. Furthermore, it focuses on the
synergy between nanoparticles with antimicrobial action and other nanoparticles, microbial adaptation
mechanisms to nanoparticles, and existing obstacles and future possibilities that were
thoroughly examined.
Central Countries' and Brazil's Contributions to Nanotechnology
Authors: Santos Jonas Farias , del Rocío Silva-Calpa Leydi , de Souza Fernando Gomes , Pal Kaushik 
Published: May 2023

Abstract:
Nanotechnology is a cornerstone of the scientific advances witnessed over the past few
years. Nanotechnology applications are extensively broad, and an overview of the main trends
worldwide can give an insight into the most researched areas and gaps to be covered. This document
presents an overview of the trend topics of the three leading countries studying in this area, as
well as Brazil for comparison. The data mining was made from the Scopus database and analyzed
using the VOSviewer and Voyant Tools software. More than 44.000 indexed articles published
from 2010 to 2020 revealed that the countries responsible for the highest number of published articles
are The United States, China, and India, while Brazil is in the fifteenth position. Thematic
global networks revealed that the standing-out research topics are health science, energy,
wastewater treatment, and electronics. In a temporal observation, the primary topics of research are:
India (2020), which was devoted to facing SARS-COV 2; Brazil (2019), which is developing promising
strategies to combat cancer; China (2018), whit research on nanomedicine and triboelectric
nanogenerators; the United States (2017) and the Global tendencies (2018) are also related to the
development of triboelectric nanogenerators. The collected data are available on GitHub. This study
demonstrates the innovative use of data-mining technologies to gain a comprehensive understanding
of nanotechnology's contributions and trends and highlights the diverse priorities of nations in
this cutting-edge field.
Deflection determination of composite wood bending elements reinforced with cylindrical polymer composite dowels
Authors: Zinnurov Tagir A. , Novitsky Egor V. 
Published: May 2023

Introduction. At the present time, environmental and logistical problems of the construction of prefabricated and temporary bridge structures are relevant. It is possible to create new constructive solutions based on renewable and recyclable materials to meet the requirements of load-bearing capacity and durability. The aim of the research is to study the operation of dowels in a composite structure and to find the dependence of deflections on the number and material of nagels.
Materials and methods. A wooden composite beam combined with polymer composite dowels is proposed as a modern structural solution. There are a number of issues that cast doubt on the feasibility of building modified wooden structures. One of them requires studying how the polymer composite and wood work together: whether the combination of materials will lead to improved mechanical properties compared with classical solutions. The samples of dowel joints with polymer-composite reinforcement have been tested, the load-carrying ability of such a joint has been estimated, and the deformations of composite beams with a varying number of dowels have been studied using the LIRA-SAPR software package.
Results. On the basis of normative calculations of dowel load-carrying ability and verification in the second group ofthe limiting states the equation allowing to specify the required number of dowels under the existing deflections was derived.
Conclusions. Calculation of deflections of bendable elements have a large number of necessary specifications, but do not take into account the presence of additional reinforcing parts, such as dowels. With the help of the work done the dependence has been obtained which can be implemented in the existing normative calculations to better describe the performance of a real structure.
Civics Education Teaching Materials with Balinese Cultural Perspective for Enhancing Learning Achievement and Love of Balinese Culture Attitude at Elementary School
Authors: Adijaya Made Aryawan 
Published: May 2023

This study aimed at developing civics education teaching materials with Balinese cultural perspective. This study was development research using the ADDIE (Analysis, Design, Development, Implementation, Evaluation) model. The subjects of this research were a third-grade teacher and twenty-three third grade students. To measure the validity of the teaching materials an expert’s evaluation sheet was used and to evaluate the implementation of the civics materials teachers’ and students’ responses questionnaires were used. The results of of the study were: 1) one civics teaching material, seven lesson plans, and 7 student worksheets which have been developed with Balinese cultural perspective. The material that was developed was under the topic “Bangga Menjadi Anak Indonesia” (Proud to become Indonesian children). 2) This product has been validated by an expert in civics education, an instructional design expert, a Balinese culture expert, and an evaluation expert and an education expert, yielding CVR of 1.00 and CVI of 1.00, categorized as valid and feasible to be tried out. 3) This product has been tried out on a limited scale in the third grade and the result showed that the produce could enhance learning achievement of the students with the averages of 81.04, 86.83, and 90.22, in the first, second and third meetings respectively, and love of Balinese culture attitude of the students with the averages of 86.90, 88.46 and 91.42.
PENGEMBANGAN MEDIA PEMBELAJARAN SPINNING WHEEL MATERI PERUBAHAN WUJUD BENDA PADA MATA PELAJARAN IPA DI KELAS III SDN PENGADEGAN 07 JAKARTA SELATAN
Authors: Fransis Kurnianingsih Monika , Amelia Winda 
Published: May 2023

ABSTRACT
This study aims to determine the feasibility of spinning wheel learning media, and determine the effectiveness of spinning wheel learning media. This study uses the RnD (Research and Development) research method with the Borg and Gall model. The test subjects in this study were 30 grade III students at SDN Pengadegan 07 South Jakarta. The media developed was declared feasible and valid based on the results of several experts: design experts with a score of 100.00%, linguists with a score of 80.00%, and material experts with a score of 84.00%. The product trial on 9 students received a score of 92.22% in the very feasible and effective category and the shared use trial of 30 students scored 91.2% in the very feasible and effective category to be applied to students when learning in class and can add interest in learning for students.
Keywords: Learning Media, spinning wheel, Development.
ABSTRAK
Penelitian ini bertujuan untuk mengetahui kelayakan media pembelajaran spinning wheel, dan mengetahui keefektifan media pembelajaran spinning wheel. Penelitian ini menggunakan metode penelitian RnD (Research and Development) dengan model Borg and Gall. Subjek uji coba pada penelitian ini yaitu siswa kelas III SDN Pengadegan 07 Jakarta Selatan yang berjumlah 30. Media yang dikembangkan dinyatakan layak dan valid berdasarkan hasil dari beberapa ahli : ahli media dengan nilai 100,00%, ahli bahasa dengan nilai 80,00%, dan ahli materi dengan nilai 84,00%. Uji coba produk terhadap 9 siswa mendapatkan nilai 92.22% kategori sangat layak dan efektif dan uji coba pemakaian bersama 30 siswa mendapatkan nilai 91,2% kategori sangat layak dan efektif untuk di aplikasikan kepada siswa saat pembelajaran di kelas dan bisa menambah minat belajar untuk siswa.

Kata Kunci: Media Pembelajaran, spinning wheel, Pengembangan
Peningkatan Pengetahuan Siswa Tentang Makanan Jajanan Sehat
Authors: Wilda Welis  , Darni  , Nuridin Widya Pranoto  
Published: May 2023

Gambaran tentang status gizi anak sekolah tersebut menunjukkan bahwa masih terdapat masalah gizi dan kesehatan yang belum terselesaikan. Kondisi ini diperparah oleh kebiasaan jajanan pada anak sekolah yang belum dapat diarahkan secara baik. masih banyak orangtua dan guru yang belum memberikan arahan yang tepat tentang makanan jajanan sehat yang boleh dibeli oleh anak, bahkan masih banyak pedagang makanan jajanan di sekitar sekolah yang belum memperhatikan keamanan makanan jajanan yang dijual.Identifikasi dan permasalahan sebagai berikut : a. Masih banyak sekolah dasar yang belum menyediakan kantin sekolah yang sehat dan dapat menyediakan kebutuhan makanan bagi siswanya. b. Belum tersedia kantin sehat yang dapat menyediakan makanan sehat bagi siswanya menyebabkan banyak pedagang yang memanfaatkan peluang untuk berjualan makanan jajanan di sekolah-sekolah. c. Masih banyak pedagang menjual makanan dengan pewarna dan pemanis buatan serta kondisi yang kurang higienis. Calon peserta siswa untuk kegiatan pengabdian masyarakat ini di rekrut dan di rekomendasikan oleh kepala sekolah. Jumlah peserta direncanakan berjumlah 50 orang. Dalam menyampaikan materi kepada para peserta akan dipakai beberapa macam metode dan penggunaan media yang relevan antara lain dengan metode ceramah, diskusi dan demonstrasi sesuai dengan bidang keamanan pangan dan gizi. Berdasarkan hasil kegiatan sosialisasi dan penyuluhan tentang pengetahuan makanan jajanan sehat bagi siswa, Sebagian besar pengetahuan gizi makanan jajanan yang sehat pada siswa termasuk kategori rendah hingga sedang, belum banyak yang memiliki pengethauan gizi makanan jajanan yang baik. Pengetahuan siswa tentang bahan tambahan makanan jajanan masih rendah sehingga banyak yang masih berperilaku membeli makanan jajanan yang diproduksi dengan bahan tambahan makanan jajanan yang tidak sehat.
CONVERSION OF PROPANE TO FORMALDEHYDE ON IRON PHOSPHATE
Authors: Dzyamko V.M. 
Published: May 2023

Phosphates represent diverse complex systems, whose basic structural unit is tetrahedron. They are widely applied as catalysts, carriers of catalytic active substances, adsorbents and ion exchangers. Phosphoric acid and phosphates act as catalyst for reactions of alkylation, cracking, izomerization, polymerization, hydrogenation and dehydrogenation. Phosphates of some metals promote oxidation of normal alkanes with derivation of aldehydes, acids, spirits and maleic anhydride.
The process of propane and propylene oxidation on iron phosphate is investigated, as well as the influence of such factors as temperature, contact time of the reacting mixture with the catalyst t, the ratio of oxygen and hydrocarbon concentration in a mixture, and the influence of hydrogen concentration on the given process is shown.
It is demonstrated that the optimum conditions for the realization of propane oxidation process is the temperature of 973 K and t = 0.17 s. It is established that with excess propane in the reaction mixture propylene is the predecessor of formaldehyde. On the contrary, at small concentration of propane in the mixture formaldehyde will be derived immediately from propane. The schemes of propane and propylene oxidation in formaldehyde are offered.
Keywords: catalyst; oxidatio; рhosphates; propane; propylene; formaldehyde.
PREPARATION AND PROPERTIES OF CERAMIC MATERIALS IN THE Ag6PS5I‒Ag7GeS5I SYSTEM
Authors: Malakhovska T.O. , Pogodin A.I. , Filep M.J. , Pop M.M. , Shender I.O. , Kokhan O.P. , Zhukova Yu.P. , Studenyak Ya.I. , Suslikov L.M. 
Published: May 2023

This work is devoted to the preparation of dense Ag+ conductive ceramic solid electrolytes in the Ag6PS5I‒Ag7GeS5I system and to the study of their electrical and optical properties. Using the non-destructive and simple method of optical diffuse reflectance spectroscopy, the value of the optical pseudogap energy of the Ag6+x(P1-xGex)S5I (x=0, 0.25, 0.5, 0.75, 1.0) solid solutions was obtained using the Kubelka-Munk function with the application of Tauc's graphic method. As a result of the performed mathematical analysis and graphic processing, it was established that the quaternary chalcohalogenides Ag6PS5I, Ag7GeS5I and solid solutions Ag6+x(P1-xGex)S5I (x=0.25, 0.5, 0.75) belong to direct-band semiconductors characterized by a forbidden optical transition . The study of electrical conductivity of Ag6+x(P1-xGex)S5I solid solutions (x=0, 0.25, 0.5, 0.75, 1.0) was carried out by the method of impedance spectroscopy, in the frequency 1×101–3×105 Hz and temperature 293–383 K ranges. For all ceramic materials prepared on the basis of Ag6+x(P1-xGex)S5I (x=0, 0.25, 0.5, 0.75, 1.0) solid solutions, an increase in the values of total electrical conductivity was observed, which is characteristic of materials with ionic electrical conductivity in the solid state.
Keywords: argyrodites; solid solutions; ceramic; impedance spectroscopy; conductivity; optical properties; optical pseudogap.
EFFECT OFTHE SUBSTITUTION OF Bi→Sb ON THE STRUCTURE CHANGES WITHIN THE AgBi1-xSbxS2 (x = 0 - 1) SOLID SOLUTION
Authors: О.V. О.V. , Marchuk О.V. 
Published: May 2023

The work is devoted to study effect of the isovalent substitution on the parameter of structure elements of the crystal structure of the AgBi1-xSbxS2 (x = 0 – 1) solid solution. The limited isostructural phases of the solid solution have a cubic system with space group Fm-3m. The samples of individual composition of the AgBi1-xSbxS2 (x = 0 – 1) solid solution were obtained in quartz vacuumed ampoules in an electric muffle furnace with MP-30 software control of technological processes. The X-ray powder diffractograms that were recorded with using the DRON 4-13 diffractometer have been analyzed using WinCSD software package. The visualization of the crystal structure has been made with VESTA program. It is worth noting that the method of solid phase reactions allows synthesizing sufficiently pure materials, which are suitable for the measure of physical properties. The change of cell parameters within a solid solution is described by a positive deviation from the Vegard’s law. Only all octahedral voids are filled in the structure. It is important to see the prospect of possible alloying by atoms with small atomic radii, which may be localized in tetrahedral voids. The change of volume of the octahedral voids is linear.
Keywords: crystal structure; solid solution; unit cell.
SYNTHESIS AND CHEMICAL PROPERTIES OF 2-HEPTADECYL-[1,3]THIAZOLO[3,2-b][1,2,4]TRIAZOL-7-IUM CATION
Authors: Hryhorka H.V. , Fizer М.М. , Fizer О.І. , Kryvoviaz A.O. , Slivka M.V. 
Published: May 2023

Functional and condensed derivatives of 1,2,4-triazoles are mostly used as biologically active compounds, and modern studies increasingly report their successful use as surfactants, stabilizers for the formation of nanoparticles, components of hybrid perovskites, which are promising materials for opto-electronics.
Synthesis of new [1,3]thiazolo[3,2-b][1,2,4]triazol-7-ium salts containing a long-chain heptadecyl substituent was proposed within our research. The production of the starting compounds (2-heptadecyl-4-methyl-1,2,4-triazole-3-thione and methallyl thioether of 2-heptadecyl-3-mercapto-4-methyl-1,2,4-triazole) was carried out according to a modified method annelating of the triazole ring to combined hybrid polyheterocyclic systems and a novel technique for the alkylation of symmetrical triazoles, as a result of which model compounds were obtained in high yields. The method of intramolecular electrophilic heterocyclization was used to quaternize the nitrogen atom of the triazole heterocycle. The study of the chemical properties of the obtained salt [1,3]thiazolo[3,2-b][1,2,4]triazol-7-ium was carried out on the example of anion exchange reactions, the results of which indicate the stability of the studied cation [1,3] thiazolo[3,2-b][1,2,4]triazol-7-ium upon heating in the presence of various anions. The obtained new heterocyclic salts are promising in terms of their further study as surfactants.
Keywords: 1,2,4-triazole; heptadecyl; [1,3]thiazolo[3,2-b][1,2,4]triazol-7-ium salts; surfactant.