bluuebunny/crossref_metadata_2025_split huggingface dataset:
MATHEMATICAL MODELING OF THE NON-STATIONARY THERMAL STATE OF A COMPOSITE COATING OF CLOSE TO EQUIMOLAR COMPOSITION DURING LASER REMELTING
Authors: Yachikov Igor , Naizabekov Abdrakhman , Lezhnev Sergey , Myasnikova Alena , Trofimov Evgeny , Panin Evgeniy , Samodurova Marina 
Published: September 2024

Based on assumptions and limitations, a mathematical model of the non-stationary thermal state of a composite coating during laser remelting on a metal substrate to obtain an alloy of equimolar or close to equimolar composition has been developed. The model includes the boundary value problem of calculating the nonstationary thermal state of the temperature distribution in the solid, two-phase and liquid regions, considering the heat release of crystallization according to the theory of a quasi-equilibrium two-phase zone in the presence of porosity of a mixture of metal powders. Based on the mathematical model, the computer program “Composite coating thermal state” was created, which allows to determine the non-stationary temperature distribution in the formed coating and substrate, the depth of penetration of the high-entropy coating layer, to evaluate the shrinkage of the molten coating under different technological conditions: laser power, the diameter of its focal spot, as well as the speed of movement along the surface of the processed material. The created program also allows to determine the dynamics of the position of two-dimensional liquidus and solidus lines for each metal included in the mixture. Using the created program, a computer simulation of the process of unsteady heating of a mixture of three metal powders in the same mass fractions: nickel, chromium and iron was carried out. Non-stationary temperature fields in the composite coating are obtained, considering its penetration and heating of the substrate. The depth of penetration of all metals, including the most low-melting one, was determined during laser remelting on a metal substrate in the production of a high-entropy alloy. The practical significance of the developed computer model lies in its use to predict the penetrationdepth of a composite coating under specified technological modes of laser remelting. At the same time, its adaptation is necessary, based on experimental data on the porosity and thickness of the coating before and after melting of simple metal systems with similar thermophysical properties.
Optimalisasi Jiwa Kewirausahaan Guru-Guru Madrasah Aliyah Negeri Kota Mojokerto Melalui Workshop Edupreneurship Berbasis Teknologi Digital
Authors: Imam Bukhori  , Ludi Wisnu Wardhana  , Elfia Nora  
Published: September 2024

Entrepreneurship related to education is very much and can be realized by practitioners in the field of education and academics, so that they can transfer their knowledge to students related to entrepreneurship. One way that can be realized by the school is to apply entrepreneurship-based subjects, by instilling the value of an entrepreneurial spirit, and application by inviting students to practice directly in trying entrepreneurship related to Education, including as a reception service for typing proposals or reports, application or web development services, and can also be as an Education tour planner, become content creators, educational institutions, and others. Based on the description of the situation analysis and observations that have been made to the partner place in the implementation of this community service, the partner's problems are formulated as follows: 1) There is still a lack of understanding of teachers and schools about the importance of edupreneurship applied in learning in schools, and there is still a lack of knowledge about the type of eduprenuership, 2) The need to develop knowledge and practice of digital technology-based eduprenuership to teachers in schools. Based on the results of interviews and discussions with partners, to overcome partner problems, the methods that will be implemented in this community service activity are: 1) Providing education about the importance of edupreneurship applied in learning in schools, and still lack knowledge about the type of eduprenuership, 2) Providing assistance and guidance, edupreneurship practices related to digital technology to teachers. The results of this community service are 1) Madrasah Aliyah Negeri Kota Mojokerto teachers can pour creative ideas in entrepreneurship that can be applied by teachers and students in schools and poured into business design, 2) Through the practice and assistance provided, teachers can already practice digital marketing using online applications.
Porovnanie úrovne pohyblivosti v členkovom kĺbe smerom do dorzálnej flexie u šprintérov a bežnej populácie
Authors: Glodžák L , Burdová M 
Published: September 2024

Výskum sme vykonali na skupine 30 reprezentačných šprintérov, ktorí pretekajú pre rôzne slovenské atletické kluby a na porovnanie sme použili skupinu 30 probandov bežnej populácie. Pomer rozloženia pohlavia bol rovnaký v oboch skupinách, takže v obidvoch skupinách bolo 18 mužov a 12 žien. Rozsah pohyblivosti sme odmerali pomocou Weigh bearing lunge testu. Našim primárnym cieľom bolo zistiť a porovnať pohyblivosť v členkovom kĺbe smerom do dorzálnej flexie vo výpade v uzavretom kinematickom reťazci medzi šprintérmi a bežnou populáciou, ďalším cieľom bolo zistiť rizikové prípady zranenia. Skupine šprintérov bola nameraná pohyblivosť do dorzálnej flexie vo výpade v axiálnom zaťažení na pravej nohe 41,6 stupňov (SD±6,47) a na ľavej nohe 42,3 stupňov (SD±6,08). U skupiny bežnej populácie to bolo v priemere na pravej nohe 45 stupňov (SD±7,54) a na ľavej nohe 44,3 stupňov (SD±6,65). V skupine šprintérov bolo za posledný rok zranených 36,6% probandov a u skupiny bežnej populácie bolo zranených 23,3% probandov. Štatisticky signifikantný rozdiel sme zaznamenali medzi pravou dolnou končatinou u šprintérov a bežnej populácie v prospech bežnej populácie (p<0,05). Tento rozdiel nebol zaznamenaný na ľavej nohe (p- 0,12). Z nameraných výsledkov môžeme skonštatovať, že skupina bežnej populácie má väčší rozsah pohyblivosti smerom do dorzálnej flexie ako skupina šprintérov.
ГРОМАДСЬКО-ПРОСВІТНИЦЬКА ДІЯЛЬНІСТЬ ОТЦЯ ІВАНА КОРОСТЕНСЬКОГО У ГАЛИЧИНІ В ДРУГІЙ ПОЛОВИНІ XIX ст.
Authors: СТЕЦИК Юрій 
Published: September 2024

Мета дослідження – вивчити громадську та просвітницьку діяльність греко-катольцького священника Івана Коростенського в Галичині у другій половині XIX ст. Методологічною основою дослідження є основні історіографічні принципи та методи, дотримання яких уможливило коректно відчитати й проінтепретувати зміст запроваджених до наукового обігу матеріалів (документів особового походження та офіційних церковних документів). Наукова новизна полягає у тому, що вперше на підставі запроваджених до наукового обігу матеріалів, здійснено спробу реконструювати громадську та просвітницьку діяльність о. Івана Коростенського. Висновки. Отець Іван Коростенський був яскравою постаттю в Галичині другої половини XIX ст., чия діяльність сприяла пожвавленню українського громадського і культурно-освітнього життя. Один з невеликої когорти сподвижників, що чітко бачили у якому напрямку буде відбуватися поступ українського народу, він, випереджаючи час, на низовому рівні щоденно дбав про створення можливостей пробудження національної свідомості. Аналіз віднайдених нами в архіві парафіяльної канцелярії села Грушів листів о. Івана Коростенського свідчить про його активну позицію щодо збереження та поширення рідної мови і культури. Його погляди і дії відзначалися раціональністю і неабиякою практичністю та враховували особливості місцевої парафіяльної людності. Часом йому доводилося працювати всупереч позиції єдиновірців, розуміючи, що посіяні ним зерна просвітництва не одразу дадуть результат. Отець Іван Коростенський відзначався і неабияким фінансовим хистом, що виявилося у створенні ним різноманітних благодійних фондів зі значним капіталом, котрі успішно функціонували і після його смерті.
Якнайбільше до формування в о. Івана активної громадсько-політичної позиції народницького напряму спричинилися події революції 1848 р. А праця у Самбірській Руській Раді та місцевій гімназії викрастилізували у нього чіткі національні проукраїнські погляди, які наскрізно проявлялися упродовж всього його життя у різних сферах суспільного служіння: громадській та освітній діяльності, душпастирстві, меценатстві.
Cross-generational Analysis of Consumer Behaviour towards Convenience Foods: A Study of Convenience Foods in Kerala
Authors: T Raghi. , K, N. Ushadevi. 
Published: September 2024

Aims: From customs dating back thousands of years to contemporary conveniences, food has always played a significant role in our societies. As we travel through history, we can see the tremendous change that has paved the way for the emergence of convenience foods in our lives. The behaviour of various generations is also on the go with time. Considering this, the study emphasises the intricate relationship between consumer behaviour towards convenience foods and age cohorts.
Methodology: The data for the study was collected from a total of 180 respondents. Among these, 60 belonged to Gen X, Gen Y, and Gen Z respectively from the central region of Kerala state.
Results: The results showed that all the respondents taken for the study irrespective of their generation showed a higher inclination towards home-cooked meals rather than convenience foods regardless of their popularity in today's market. For Gen X and Y, convenience food was a choice because of the little time and effort required for preparation while Gen Z preferred it as it fixes their hunger in a snap of a moment. The majority of the respondents purchased convenience food from the supermarkets. All the generations were moderately satisfied with the convenience foods available. Even though most showed modest satisfaction towards various parameters of satisfaction, the degree of satisfaction toward the availability of convenience food options differed among generations.
Conclusion: The results showed the importance of understanding the behavioural differences across generations and how they can impact the acceptance of convenience food. With a comprehensive understanding of the needs and drives of each generation, marketers can adeptly navigate through the complexity of this fast-paced convenience food industry and can be a success.
Caught by a Medieval Disease: A Monoarthritis Revealing Syphilis
Authors: Yassir Lakrafi , Moudatir Mina , Leila Barakat , Merieme Benzakour , Echchilali Khadija , Kabli Hassan El 
Published: September 2024

Syphilis is a sexually transmitted bacterial infection that first appeared in Europe in the 15th century, responsible for deadly epidemics before the discovery of penicillin. It typically progresses through three phases: primary syphilis, characterized by a syphilitic chancre that may appear on the genital area, anus, or oral cavity and can go unnoticed; secondary syphilis, which corresponds to the hematogenous dissemination of the treponema, leading to skin eruptions occurring in two waves, also known as "florid" phases, with the second wave being the most characteristic, involving papular lesions on the palms and soles. During this phase, there may also be lymphadenopathy, early neurosyphilis, and osteoarticular manifestations such as periostitis and arthritis [1,2,3]. Finally, tertiary syphilis, a historical form, is characterized by cardiac, vascular, and/or neuropsychiatric involvement. We report the case of a patient with risky sexual behavior who presented with an oral ulceration possibly corresponding to an oral syphilitic chancre in the primary phase. The patient did not seek medical attention at that time and developed secondary syphilis with joint involvement two months later. This article aims to remind that syphilis should not be excluded when faced with the combination of oral ulceration and arthritis, alongside chronic inflammatory bowel diseases, Behçet's disease, and lupus. The infection has to be confirmed in the joint aspiration either by isolating the treponema or by finding the pathogen’s DNA or simply by TPHA and VDRL technique ; as for the syphilitic arthritis should be treated as a secondary siphilis.
The Effect of Age on Human Immunodeficiency Virus Risk Related Behaviors among Undergraduate Students at a Historically Black College and University in the United States of America
Authors: Andrew Prince Onyekachi , Andrew Rita Nneka 
Published: September 2024

Objective: HIV infections have taken a heavy toll on young adults in the USA. Most undergraduate students fall within the age group who are at high risk of HIV infections. The effect of age on HIV risk related behaviors among African American undergraduate students has never been investigated before. Thus, this study assessed the effect of age on HIV risk related behaviors among African American undergraduate students at a Historically Black College and University.
Methods: A total of 400 respondents were randomly selected from Jackson State University of the USA, a Historically Black College and University. A cross-sectional study design was utilized from January to September, 2016. Data were collected using a validated self-administered standardized questionnaire. Chi-square test was used to see the association between age and HIV risk related behaviors.
Results: Over seventy five percent of the study participants have had at least one risk behavior related to HIV infection transmission and there was significant statistical difference between students aged 18-24 years and students aged 25 years and above (p<0.05). The students aged 18-24 years were more likely to participate in risk behaviors that could predispose them to HIV infections (P = 0.02).
Conclusions: As the HIV related risk behaviors was higher among students aged 18-24 years old, age appropriate HIV preventive programs that are appealing to young people will be required to effectively prevent HIV infection among this vulnerable population.
Genetics of Fruit Yield and Its Traits in Okra [Abelmoschus esculentus (L.) Moench]
Authors: Harsiddhi Limbani , DR Mehta 
Published: September 2024

A Half-diallel mating design involving nine okra genotypes was used to study the inheritance of fruit yield and its component characters in okra. Data from the F1 generation and parents were analysed using Hayman's (1954) method of diallel analysis. The estimated component of genetic variation revealed that additive component (D) was significant for number of branches per plant and fruit girth in E1 and fruit girth in E3 environment. However, additive component was non-significant in all three environments for fruit yield per plant. The dominant components (H1 and H2) were significant for all the characters in all the environments. These results revealed the importance of both additive and non-additive component of gene action in the expression of traits under study. The relative magnitude of dominant component (H1 and H2) was higher than additive component for most of the traits indicating that dominance gene action involved in expression of most of the characters under studied. The average degree of dominance for fruit yield per plant and most of the traits was more than unity in all the three environments which suggested over dominance effect in expression of all the traits. The proportion of genes with positive and negative effects in parents was deviated from 0.25 in all three environments suggesting asymmetrical distribution of positive as well as negative alleles among the parents for fruit yield per plant. The ratio of dominant and recessive genes in the parents were also greater than unity in all the three environments, indicated excess of dominant genes were present in the parents for fruit yield per plant. In the presence of overdominance for yield, reciprocal recurrent selection is the best recurrent scheme to develop hybrids.
Measurement of Low‐Abundance Intracellular mRNA Using Amplified FISH Staining and Image‐Based Flow Cytometry
Authors: Henning Andrea L. , Sampson Jill N. Best , McFarlin Brian Keith 
Published: April 2016

AbstractRecent advances in instrument design and reagent development have enabled the rapid progression in available measurement techniques in the field of flow cytometry. In particular, image‐based flow cytometry extends the analysis capacity found in traditional flow cytometry. Until recently, it was not possible to measure intracellular mRNA in specific phenotypes of cells by flow cytometry. In this protocol, a method of completing simultaneous intracellular measurement of mRNA and protein for PPAR‐gamma in peripheral blood monocytes, which have been exposed in vitro to modified LDL, is described. The process of PPAR‐gamma activation following uptake of modified LDL is believed to play a role in the development of atherogenesis. PPAR‐gamma mRNA measurement was made possible using an amplified FISH technique (PrimeFlow RNA Assay) that allowed for detection of low‐abundant intracellular mRNA expression. This protocol represents a continued effort by the authors’ laboratory to establish and validate new techniques to assess the role of the immune system in chronic disease. © 2016 by John Wiley & Sons, Inc.
ChemInform Abstract: A New n = 4 Layered Ruddlesden—Popper Phase K2.5Bi2.5Ti4O13 Showing Stoichiometric Hydration.
Authors: Liu Samuel , Avdeev Maxim , Liu Yun , Johnson Mark R. , Ling Chris D. 
Published: April 2016

AbstractPolycrystalline K2.5Bi2.5Ti4O13 (I) is prepared by solid state reaction of KNO3, Bi2O3, and TiO2 (Al2O3 crucible, 750 °C, 16 h).
ChemInform Abstract: Structural Properties and Charge Distribution of the Sodium Uranium, Neptunium, and Plutonium Ternary Oxides: A Combined X‐Ray Diffraction and XANES Study.
Authors: Smith Anna L. , Martin Philippe , Prieur Damien , Scheinost Andreas C. , Raison Philippe E. , Cheetham Anthony K. , Konings Rudy J. M. 
Published: April 2016

AbstractIn the frame of a potential contact of MOX fuels with the Na coolant in fast breeder reactors, the chemistry and charge distributions in α‐Na2UO4, Na3NpO4, α‐Na2NpO4, Na4NpO5, Na5NpO6, Na2PuO3, Na4PuO5, and Na5PuO6 are investigated by XANES spectroscopy at the U‐L3, Np‐L3, and Pu‐L3 edges.
ChemInform Abstract: A Novel g‐C3N4 Based Photocathode for Photoelectrochemical Hydrogen Evolution.
Authors: Dong Yuming , Chen Yanmei , Jiang Pingping , Wang Guangli , Wu Xiuming , Wu Ruixian 
Published: April 2016

AbstractA graphitic g‐C3N4 based photocathode is prepared by dip coating a NiO‐coated FTO (F‐doped tin oxide) glass support in an aqueous solution of (NH2)2CS for 4 h followed by sintering under N2 (500 °C, 2 h).
ChemInform Abstract: Energy‐Efficient Degradation of Rhodamine B in a LED Illuminated Photocatalytic Fuel Cell with Anodic Ag/AgCl/GO and Cathodic ZnIn2S4 Catalysts.
Authors: Liu Yuanyuan , Liu Lifen , Yang Fenglin 
Published: April 2016

AbstractStainless steel electrodes loaded with anodic Ag/AgCl/graphene oxide (GO) and cathodic ZnIn2S4 are used in a one‐chambered photocatalytic fuel cell (PFC) for rhodamine B (RhB) degradation under visible light (2 W LED).
ChemInform Abstract: KSbI6O18: An Antimony Iodate Semiconductor Material with Cyclic Chiral S6‐Symmetric Hexaiodate.
Authors: He Guo‐Xiang , Chen Yi‐gang , Yang Nan , Xing Mei‐Ling , Zhang Xian‐Ming 
Published: April 2016

AbstractThe novel title compound is hydrothermally synthesized from a mixture of Sb2O3, K2CO3, I2O5, and H2O (autoclave, 210 °C, 4 d, 98% yield).
ChemInform Abstract: The Magnetic and Crystal Structures of Sr1‐δFeO2‐xFx, a New Oxyfluoride.
Authors: Li Bing , Woods John , Siewenie Joan , Hah Hien‐Yoong , Johnson Jacqueline A. , Johnson Charles E. , Louca Despina 
Published: April 2016

AbstractThe new quasi‐two‐dimensional title compound is prepared by annealing mixtures of SrFeO3 (obtained by sintering SrCO3 and Fe2O3 at 1000 °C for 24 h) and polyvinylidene fluoride under N2 flow at 400 °C for 48 h, followed by heating the product with CaH2 under Ar atmosphere to 280 °C for 48 h.
ChemInform Abstract: Synthesis, Crystal Structure and Physical Properties of FeV4S8 and KFe2V8S16.
Authors: Sui Lifang , Zhang Xian , Tian Zhangliu , Huang Rongtie , Zhang Hui , Cheng Jinjong , Huang Fuqiang 
Published: April 2016

AbstractSingle crystals of the new sulfides FeV4S8 (I) and KFe2V8S16 (II) are prepared via a melting salt method using, Fe, V, S, K2S in the case of (II), and KI (evacuated silica tubes, 1073 K, 3 d; cooling to 873 K at a rate of 3 K/h).
ChemInform Abstract: A Practical Synthesis of Optically Active δ‐Nitro‐α‐ketoesters and 4‐Cyclohexyl‐proline Catalyzed by Chiral Squamides.
Authors: Liu Ri‐long , Yan Yun‐yun , Zhang Ting , Zhang Xue‐jing , Yan Ming 
Published: April 2016

AbstractOrganocatalytic asymmetric Michael addition of α‐nitroesters to unsaturated ketoesters followed by decarboxylation furnishes the title compounds with good enantioselectivities.
ChemInform Abstract: Enantioselective Direct Aldol Reactions Promoted by Phosphine Oxide Aziridinyl Phosphonate Organocatalysts.
Authors: Dogan Oezdemir , Tan Duygu 
Published: April 2016

AbstractThe phosphonate POAP is tested as a chiral catalyst in the aldol reaction of cyclohexanone with aldehydes (II), however, the yield, diastereoselectivity, and enantioselectivity are only low to moderate.
ChemInform Abstract: An Efficient Iron Catalyzed Regioselective Acylative Cleavage of Ethers: Scope and Mechanism.
Authors: Bodduri V.D. Vijaykumar , Choi Kyung‐Min , Vaidya Raghavender Rao , Patil Kalpesh , Chirumarry Sridhar , Jang Kiwan , Yoon Yong‐Jin , Falck John R. , Shin Dong‐Soo 
Published: April 2016

AbstractRegioselective cleavage of cyclic and acyclic ethers in the presence of acid chlorides yields chloro‐esters and nonchlorinated esters, respectively.
ChemInform Abstract: Minimizing Aryloxy Elimination in RhI‐Catalyzed Asymmetric Hydrogenation of β‐Aryloxyacrylic Acids Using a Mixed‐Ligand Strategy.
Authors: Li Yang , Wang Zheng , Ding Kuiling 
Published: April 2016

AbstractAn efficient asymmetric hydrogenation of β‐aryloxyacrylic acids is realized using a Rh(I)‐complex based on the heterocombination of a readily available chiral monodentate secondary phosphine oxide (SPO) and an achiral monodentate phosphine ligand as the catalyst.
ChemInform Abstract: Directed meta‐Selective Bromination of Arenes with Ruthenium Catalysts.
Authors: Yu Qingzhen , Hu Le'an , Wang Yue , Zheng Shasha , Huang Jianhui 
Published: April 2016

AbstractThe Ru‐catalyzed bromination of arenes (V) bearing a 2‐pyridyl directing group proceeds regioselectively to afford bromides (VI).
ChemInform Abstract: Direct Synthesis of Thioethers from Carboxylates and Thiols Catalyzed by FeCl3.
Authors: Venkatesham Kunuru , Bhujanga Rao Chitturi , Dokuburra Chanti Babu , Bunce Richard A. , Venkateswarlu Yenamandra 
Published: April 2016

AbstractIt is remarkable that in the reaction with tetrazolthiols either excellent yields are achieved or no reaction occurs.
ChemInform Abstract: Regioselective C5‐Alkylation and C5‐Methylcarbamate Formation of 2,3‐Dihydro‐4‐pyridones and C3‐Alkylation and C3‐Methylcarbamate Formation of 4‐(Pyrrolidin‐1‐yl)furan‐2(5H)‐one.
Authors: Gu Xingxian , Georg Gunda I. 
Published: April 2016

AbstractA one‐flask procedure was developed to prepare C5 alkyl‐substituted analogs of N‐benzyl‐2,3‐dihydro‐4‐pyridones is reported.
ChemInform Abstract: Chemistry of Halonitroethenes. Part 3. Reinvestigation of the Nitration of Trichloroethene — Subsequent Reactions of the Products and Evaluation of Their Antimicrobial and Antifungal Activity.
Authors: Zapol'skii Viktor A. , Namyslo Jan C. , Sergeev Galina , Broenstrup Mark , Gjikaj Mimoza , Kaufmann Dieter E. 
Published: April 2016

AbstractThe nitration reaction of trichloroethene to its three main products is comprehensively investigated and optimized.
ChemInform Abstract: Transition‐Metal‐Free Oxidative Aliphatic C—H Azidation.
Authors: Zhang Xiaofei , Yang Haodong , Tang Pingping 
Published: April 2016

AbstractAn operationally simple, scalable azidation of aliphatic C—H bonds with methyl 2‐(azidosulfonyl)benzoate is described which tolerates a broad range of functional groups.