bluuebunny/crossref_metadata_2025_split huggingface dataset:
Optimization of the Health and Safety Protocol for Covid-19 through the use of the QR Code in the Tailing Disposal System Project, Quellaveco - Moquegua, 2020
Authors: Cristobal Coaguila Berly David  , Barriga Paria Christ Jesus  
Published: November 2021

The purpose of this research work is to optimize the occupational health and safety protocol by increasing distancing and mitigating physical contact to prevent the spread of Covid-19, using QR catches to identify personnel. Contrasting the sanitary measures to protect the health and integrity of the personnel of the operations area of the Tailing Disposal System -Quellaveco project.
For the study of the database, factor analysis is used as a multivalent statistical method, with this method the number of 997 daily reports was analyzed, addressing the study of the structure of correlations between a large number of variables, factor analysis assists in the selection of a representative subgroup of variables and creates new variables called factors, when performing the analysis and treatment of 24 variables with the SPSS 25 software, the variables with the correlation matrix were reduced to 13, and with the total variance explained, a matrix different from that of identity was defined, reducing the dimensionality of the problem from 13 to 5 factors.
Evaluation of the Relationship between the Level of DHEA-S and Sex Hormones in Some Infertile Iraqi Men
Authors: Khaled S. Abd  , Adnan F. AL-Azzawie  
Published: November 2021

This study aims to evaluate serum levels of the Dehydroepiandrosterone sulfate (DHEA-S) and its relationship with some sex hormones such as Follicle stimulating hormone (FSH), Luteinizing hormone (LH), prolactin and testosterone hormone and the infertility type in some infertile Iraqi men.
Blood and seminal fluid samples from (60) idiopathic male infertile and (60) healthful individuals as a control group aged (18 to 60 year) were collected from private clinics. Serum hormones (DHEA-S, FSH, LH, prolactin and testosterone) were measurement using Enzyme Linked Immunosorbent Assay (ELISA).
The levels of DHEA-S, FSH, LH and prolactin are significantly higher (P≤0.01) expect of the testosterone level was significantly decreased (P≤ 0.01) in the infertile men as compared with control group. High significant differences (P≤0.01) were recorded when comparing the hormonal levels (DHEA-S, FSH, LH, prolactin and testosterone) according to the age groups. There are significant differences (P≤ 0.01) in levels of (DHEA-S, FSH, LH, prolactin and testosterone) in the infertility period. Smoker infertile men have high levels (P≤ 0.05) in the DHEA-S and LH while have low levels in the prolactin hormones compared with control. Patients with family history have shown significant differences (P≤0.05) in the levels of DHEA-S, FSH, LH and prolactin.
In conclusion, this study revealed significantly increase in the DHEA-S levels in the infertile men and negative correlation between DHEA-S and FSH. Therefore, DHEA-S has important role in the diagnosis and follow up of the male infertility.
Extraction of Lipopeptide from Bacillus subtilis and Histological Study on Albino Rats Tissue
Authors: Ghofran Filaih Abd AL-Hussan  , Waleed Jaleel Abed AL-Kelaby  , Ali Yas Khudhair AL-Ameri  
Published: November 2021

Introduction and Aim: An extract of the lipopeptides from Bacillus subtilis has been found to be extremely useful in antimicrobial applications. Specifically, the goal of this study is to manufacture lipopeptide and assess the safety of this substance on the tissues and organs of laboratory rats.
Materials and Methods: Bacillus subtilis bacteria were isolated and identified at the postgraduate microbiology laboratory in the department of biology at Kufa University's College of Science. The bacteria became active after 24 hours of growth in the brain broth infusion broth medium. In order to determine the bacteria's capacity to produce lipopeptide. On nutrient agar medium, a quantity of lipopeptide was synthesized utilizing HCL for sediment, yielding an estimated amount of 1.5 gm during a two-month period, then the product was partially purified and lyophilized using a lyophilizer. For one week, the lipopeptide was administered on albino rat tissues such as the kidney, liver, spleen, and small intestine to determine its safety.
Results: The results showed no damage or any changes on tested tissues compared with control treatment and all of the previously mentioned organ tissues were completely intact and this is evidence of the safety of the lipopeptide extract for use.
Conclusions: It was discovered that lipopeptide had no effect on the organs that were utilized in the experiment and that it is safe for human consumption.
Studi Eksperimental Pengaruh Kecepatan Engkol dan Variasi Diameter Disk terhadap Amplitudo, Frekuensi dan Daya pada Mekanisme Pembangkit Gelombang
Authors: Ulum Miftahul , Noerpamoengkas Ardi , Arifin Ahmad Anas , Firmansyah Hanif Darmawan 
Published: November 2021

Kebutuhan akan energi yang terbarukan di Indonesia perlu dikembangkan salah satunya adalah energi yang berasal dari pembangkit listrik mikrohidro karena dapat meminimalisir penggunaan sumber energi yang berasal dari fosil. Penggunaan gelombang air sebagai seumber energi juga dirasa memiliki dampak resiko yang relatif kecil, serta pemanfaatannya yang mudah diperbarui. Pada penelitian ini akan dilakukan studi eksperimental dengan simulasi pada alat pembuat gelombang air. Studi eksperimental ini menggunakan metode variasi frekuensi kecepatan motor dan jarak engkol terhadap amplitudo dan frekuensi gelombang. Variabel bebas yang digunakan dalam penelitian ini adalah tinggi gelombang atau amplitudo dan panjang gelombang yang dihasilkan. Dengan membuat prototype wave tank dan melakukan pengukuran dan perbandingan antara parameter-parameter yang berpengaruh terhadap perhitungan gelombang air yaitu amplitude gelombang (A), periode gelombang (T), dan panjang gelombang (?), kecepatan putaran motor dan diameter poros engkol maka didapatkan parameter apa saja parameter yang saling berpengaruh serta bagaimana variasi kecepatan dan variasi poros engkol berpengaruh terhadap parameter-parameter yang ada. Sehingga dari penelitian ini didapatkan Frekuensi terbesar pada crank nomor 1 dengan kecepatan 120 rpm dengan frekuensi sebesar 2.83 Hz, amplitudo terbesar didapatkan pada crank nomor 3 kecepatan 1 dan 2 dengan amplitudo sebesar 30 mm, dan daya terbesar didapatkan pada crank nomor 3 kecepatan 1 dan 2 dengan energi bangkitan 4.41 watt
Gross regional product: study of influencers
Authors: Karpenko Elena , Rasseko Yuliya 
Published: November 2021

The relevance of the research topic is determined by special attention to issues of regional development in the state policy of the Republic of Belarus, the quality of life of 78.6% of the country's population depends on the level of development of the regions under study. The problem of regional development is the growing imbalances in development between the regions of the country and, as a result, undesirable interregional migration flows of the population and a reduction in the demographic potential of a number of territories, as well as the emergence of signs of depression in a number of areas. The analysis of recent publications makes it possible to verify an ongoing interest in the issue, but the drawback of most studies is the disclosure of the issue within one particular region, or the study of the growth of grp due to conventional factors. According to the authors, until the end of the unexplored, the dependence of the gross regional product on indirect, implicit factors remains. Particular attention is drawn to the author's indicators and their place in the GRP growth model. The aim of the study is to establish the influence of unconditional and indirect factors on the magnitude and dynamics of gross regional product, which will provide an opportunity to formalize the dependence of grp on these factors and subsequently apply the built model in practice. The study methods used in the work are comparison, grouping, correlation-regression analysis, econometric modeling, and a systemic approach. Results of work. The present study considers a set of indicators for six regions of the republic of belarus for the period from 2013 to 2019. Using econometric methods of analysis, the authors built a regression model of the dependence of grp per capita on four exogenous variables, analyzed the degree of influence of these variables and the possibility of impact on them by the state. The area of application of the study results is state policy aimed at the sustainable growth of the economies of the regions. Conclusions. In the constructed model of four exogenous variables, the unemployment rate and the rate of life of the population are most significant. However, according to the authors, in order to achieve the desired level of gross regional product, it is necessary to have a comprehensive impact on all variable models, among which, in descending order of importance, the level of unemployment, the rate of life of the population, the amount of industrial production per person employed in the economy, investment in fixed assets.
Comparative analysis of classifications of public procurement
Authors: Hruzky Yuriy 
Published: November 2021

Relevance of the research topic. The article is devoted to theoretical and practical aspects of classification of public procurement in Ukraine. Formulation of the problem. The development of a scientifically sound classification of procurement, which would provide a combination of theory and practice of public procurement, allowed for a more accurate assessment of the effectiveness of the use of budget funds. Analysis of recent research and publications. The article provides an overview of current publications on public procurement management, as well as scientific approaches to the classification of public procurement. Selection of unexplored parts of the general problem. The author emphasizes the insufficiency of domestic works on the classification of public procurement, taking into account the latest changes in the legislation of our state. The purpose of the article is to analyze the classification criteria of public procurement, as well as to find ways to improve the classification of public procurement. Research methods: dialectical, analysis and synthesis, empirical, statistical. Work results and conclusions. The article considers the theoretical and practical principles of classification of public procurement, analyzes scientific approaches to the classification of public procurement, identifies the main criteria for the classification of procurement, improved the classification of public procurement. Field of application of results. The obtained results can be used primarily in procurement procedures, as well as in improving the economic policy of the state. Novelty: The proposed classification of public procurement, which corresponds to the modern stage of the formation of the sphere of public procurement, reproduces the structure and organization of procurement activities in Ukraine.
Employee satisfaction, employee engagement and turnover intention: The moderating role of position level
Authors: Wen Decheng , Yan Dongwei , Sun Xiaojing 
Published: November 2021

BACKGROUND: Employee satisfaction, employee engagement and turnover intention have always been hot issues in the study of sustainable human resource management. Understanding the relationship among the three is critical for both researchers and human resource practitioners. OBJECTIVE: This study aims to distinguish the effects of employee satisfaction on employee engagement and turnover intentions, and explore the mediating roles of employee engagement and the moderating effects of position level. METHODS: Structural equation modelling and questionnaire. RESULTS: Pay satisfaction, satisfaction with supervisor, satisfaction with work itself, and satisfaction with promotion have positive impacts on employee engagement significantly. Pay satisfaction, satisfaction with supervisor, satisfaction with promotion, satisfaction with co-workers have negative impacts on turnover intention. Employee engagement has a negative impact on turnover intention. Employee engagement partially mediates the relationships between satisfaction with supervisor and turnover intention as well as satisfaction with promotion and turnover intention. The moderating roles of position level between satisfaction with supervisor, satisfaction with co-workers and turnover intention have been supported by data. CONCLUSIONS: This paper validates the relationship among employee satisfaction, employee engagement and turnover intention, and the moderating role of position level systematically. Some suggestions are provided for practitioners in the area of human resource management.
Nueva variante en el gen ALG13 responsable del trastorno congénito de la glicosilación tipo Is en un paciente masculino
Authors: Ramirez-Montaño Diana , Candelo Estephania , Pachajoa Harry 
Published: November 2021

Los defectos congénitos de la glicosilación (CDG) son un grupo de errores innatos del metabolismo de las glicoproteínas con manifestaciones multisistémicas heterogéneas. Se han reportado más de 100 tipos diferentes de CDG. La forma que involucra el gen de la glicosilación ligada a asparagina (ALG13) comunmente ligada al X, es una enfermedad infrecuente.Objetivo: Describir las manifestaciones clínicas de un paciente con CDG relacionado con ALG13 y comparararlo con los casos reportados previamente.Caso Clínico: paciente varon de 11 años de edad, hijo de padres consanguíneos, con antecedentes de hipotonía, retardo del desarrollo psicomotor severo, déficit cognitivo y problemas de alimentación desde los 5 meses de vida. Presentaba además microcefalia, cardiopatía congénita (ductus arterioso persistente e insuficiencia mitral) sin trastorno convulsivo ni compromiso de la coagulación. Se realizaron estudios metabólicos los cuales no fueron concluyentes, incluyendo estudios de N-glicosilación en plasma normales, por lo que se decidió realizar secuenciación de Exoma completo que identificó una variante no reportada anteriormente en el gen ALG13: c.428C > T (p.P143L) en hemicigosis, confirmada por secuenciación Sanger, la madre fue portadora de la misma variante.Conclusión: Se presenta el primer paciente reportado en Colombia con CDG-Is sin epilepsia, los hallazgos amplían el espectro fenotípico de CDG-Is conocido hasta el momento y soportan que los transtornos de la N-glicosilacion pueden presentarse con estudios bioquímicos normales. Sin embargo, se necesitan estudios funcionales para demostrar estos hallazgos. La secuenciación de exoma es una tecnología costo-efectiva que permite la identificación de mutaciones responsables de los fenotipos en enfermedades con gran heterogeneidad genotípica y fenotípica.
Model Pengembangan Bisnis BUMDes berdasarkan Pendekatan Sharing Economy dan Gig Economy
Authors: Sudewa Jaka , Fahreza Mohammad 
Published: November 2021

In an effort to encourage MSMEs, especially BUMDes Bhakti, the main village of Cilembu, it is necessary to develop a new business model, namely by utilizing opportunities by implementing the digital economy so that BUMDes business activities can operate properly and can follow business developments, so that the purpose of bumdes can be achieved, namely improving services to the community and empowering villages as autonomous regions with regard to productive efforts and improving business. emandirian and village capacity in strengthening the economy. This research aims to find out the potential and business barriers of BUMDes Bhakti Utama, knowing the efforts of BUMDes Bhakti Utama Cilembu in reviving bumdes business that is currently vacuum and to formulate a sharing economy and gig economy model so that the right business model is found for BUMDes, especially BUMDes Bhakti Utama that can be developed and operate in Cilembu Village so that it has a business development strategy that is in accordance with current conditions. Thus, this study has a contribution, both in the development of theory and in the business practices of sharing economy and gig economy in efforts to empower the village economy. The method used in this study is qualitative descriptive analysis, which is presented in the form of drawings, tables and descriptions. This descriptive analysis method is processed based on elements of the Business Model Canvas and conducted an analysis of the potential and obstacles of businesses and then analyzed based on the sharing economy and gig economy approach to get the sharing economy and gig economy model. Furthermore, SWOT and PESTEL analysis is carried out to assess the extent to which new business models can be used so that alternative strategies / efforts can be formulated.
PENERAPAN PENDEKATAN SAINTIFIK DALAM MENINGKATKAN KEMAMPUAN SISWA MENULIS TEKS IKLAN KELAS VIII.2 MTS NEGERI 1 KONAWE
Authors: Zulhiad Ihsan , Hanafi Hilaluddin , Badara Aris 
Published: November 2021

Abstrak: Penelitian ini bertujuan (1) Untuk mengetahui bagaimana Penerapan Pendekatan Saintifik dalam Pembelajaran Menulis Teks Iklan Pada Siswa Kelas VIII.2 MTs Negeri 1 Konawe; (2) Untuk mengetahui hasil Penerapan Pendekatan Saintifik dalam Pembelajaran Menulis Teks Iklan Pada Siswa Kelas VIII.2 MTs Negeri 1 Konawe. Penelitian ini menggunakan jenis penelitian kualitatif. Hasil penelitian dapat disimpulkan (1) Penerapan pendekatan saintifik dalam pembelajaran menulis teks iklan dilakukan dengan menggunakan langkah-langkah yang ada dalam pendekatan saintifik.; (2) Penerapan langkah-langkah saintifik dalam pembelajaran menulis teks iklan yang dilakukan pendidik menghasilkan karya yang baik. Tulisan yang dihasilkan setiap individu berbeda, karena pada dasarnya kemampuan berpikir setiap peserta didik juga berbeda. Kerja kelompok yang dilaksanakan peserta didik menghasilkan tulisan berupa teks iklan yang kompleks, sehingga keberagaman yang ada menjadi satu kesatuan yang utuh dan bervariasi. Kata Kunci: Pembelajaran Bahasa Indonesia; Saintifik; Teks Iklan
Kerentanan Species Ikan Retain pada Perikanan Tuna dari Alat Tangkap Handline
Authors: Yonvitner Yonvitner , Boer Mennofatria , Kurnia Rahmat , Tamanyira Masykur 
Published: November 2021

Kelompok ikan retain dari perikanan tuna juga termasuk kelompok komersial utama yang juga banyak dimanfaatkan. Penurunan hook rate tuna juga turut mempengaruhi perikanan tuna termasuk hasil tangkapan samping lainnya. Untuk itu penelitian kerentanan kelompok retain ini juga perlu dilakukan untuk mengetahui potensi berkelanjutannya. Penelitian dilakukan pada bulan Juli 2013 di Sendangbiru Malang, Bitung, Wakatobi, dan Kendari. Data yang dikumpulkan dan kemudian dianalisis adalah produkitivitas dan susceptabilitas menurut kriteria MSC (Marine Steward Council). Indek kerentanan dievaluasi dari indek jarak (Index Jaccard). Hasil tangkapan ikan retain dari perikanan tuna adalah ikan cakalang (Katsuwonus pelamis), ikan lemadang (Coryphaena hippurus), dan baby tuna (Thunnus albacores). Nilai produktivitas berkisar 1.43-2,14 tergolong sedang sampai tinggi dan susceptibilitas 1,13-1,48. Tingkat kerentanan ikan retain berkisar 86,3-96,2 yang tergolong rentan rendah (low risk) dan potensial berkelanjutan.
Synthesis of pH-Sensitive and Self-Fluorescent Polymeric Micelles Derived From Rosin and Vegetable Oils via ATRP
Authors: Yu Juan , Xu Chaoqun , Lu Chuanwei , Liu Qian , Wang Jifu , Chu Fuxiang 
Published: November 2021

Preparation and application of sustainable polymers derived from renewable resources are of great significance. The aim of this study is to synthesize a kind of sustainable polymeric micelles from rosin and vegetable oils via atom transfer radical polymerization (ATRP) and to investigate the doxorubicin delivery properties of these micelles. Dehydroabietic acid–based poly lauryl methacrylate (DA-PLMA) with narrow PDI of 1.13 was prepared in a well-controlled process using rosin as an ATRP initiator. Thereafter, carboxylic groups were introduced to form poly methacrylic acid (PMAA) moieties in DA-PLMA polymer via acid hydrolysis. The resulted DA-PLMA-PMAA could self-assemble in water to form pH-dependent polymeric micelles with a diameter of ∼65 nm and PDI as low as 0.105. Owing to the existence of rosin, DA-PLMA-PMAA micelles also showed self-fluorescence properties. In addition, Dox-loaded micelles were prepared in aqueous solution with the drug-loading capacity as high as 16.0% and showed sustained-release characteristics. These results demonstrate great promise for designing polymeric micellar from rosin and vegetable oils.
Smartphones and Educational Apps Use Among Medical Students of a Smart University Campus
Authors: Singh K. , Sarkar S. , Gaur U. , Gupta S. , Adams O. P. , Sa B. , Majumder M. A. A. 
Published: November 2021

Background: Smartphones and medical education apps are popular with and are widely used by medical students to facilitate peer interactions, communication and collaboration in addition to their “learn anywhere” advantage. Smartphone use by medical students has not been studied in the English-speaking Caribbean. Study objectives were to assess in preclinical students attending the University of the West Indies in Barbados, smartphone ownership, usage and attitudes toward use in medical education.Methods: First and second year preclinical medical students completed a self-administered paper-based questionnaire during the 2018–2019 academic year. Survey questions included sections on smartphone ownership, medical apps used, phone usage for education related tasks, and the perception on the usefulness of smartphones in medical education.Results: Of 112 participants (response rate 67.4%), 43% considered using the smartphone for medical education when acquiring it but 92% were currently using it for this purpose, with 80.3% (p &lt; 0.01) specifically using it for learning anatomy. The majority of the students felt that the use of smartphones would improve their educational experiences (89.1%) (p &lt; 0.01), be beneficial to medical faculty for teaching (84.8%) (p &lt; 0.01), and could be more effectively used in medical education (50.9%) (p &lt; 0.01). For information resources students used Medscape (67.9%) and Mayo Clinic (57.1%) and the most frequently used search engine was Google (95.5%). Most students (67.9%) used medical apps and 79.5% would buy more useful apps provided they were affordable. The popular apps were: ‘Teach me Anatomy’ (11.9%), ‘UpToDate’ (10.3%) and ‘Medscape’ (8.8%). Most students (66.1%) felt a Smart Campus should ensure e-learning platforms were compatible with smartphones and university policies regarding smartphone usage for academic purposes were needed.Conclusion: Findings show that smartphones and related medical education apps are widely used by medical students and improve their educational experiences. Universities should develop a policy regarding smartphone usage for academic purposes.