bluuebunny/crossref_metadata_2025 huggingface dataset:
Mechanism and optimum pressure for sliding-mode nanogenerator
Authors: Yun Hang , He Ren
Published: March 2023

Triboelectric nanogenerator has extensive applicability because of its capability of harvesting mechanical energy and flexible working modes. To research the optimum pressure and improve the recovered energy of the sliding-mode triboelectric nanogenerator, a contact model of the Al/PTFE tribo-pair is studied by ab initio calculation and finite element simulation. The F-atom of PTFE is proved to be the electron accepter and the charges transferred can be predicted by Bader charge analysis. The mathematical relation between interfacial distance, charges transferred and contact pressure can be fitted. By Gauss’s law, the electric field is simulated and the regeneration energy of the sliding-mode triboelectric nanogenerator can be evaluated by the total electric energy and friction loss. Finally, an optimum pressure can be set to the upper or lower limit of working pressure corresponding to larger recovered energy. And less friction coefficient and larger contact area are also effective methods for recovering energy.
Experimental research on the thermal properties of innovative insulation boards made of polyurethane-polyisocyanurate (PUR/PIR)
Authors: Prałat Karol , Ciemnicka Justyna , Jankowski Piotr , Wierzbicka Ewa , Plis Arkadiusz
Published: March 2023

In this work, the results of investigations of polyurethane materials were presented. Innovative materials based on polyurethane-polyisocyanurate (PUR/PIR) foam were obtained. Different types of additives (flame retardants, aerogels – additives that decrease thermal conductivity) are used in the composition of PUR/PIR foam. Foams are a type of composite composed of two phases: continuous (polyurethane polymers) and dispersed (composed of gases). All samples have been tested for thermal parameters: thermal conductivity, specific heat, and thermal diffusivity. Then they have been compared with each other and with a reference sample (RS) without additives. Based on the research, it was shown that innovative insulation materials were characterized by thermal conductivity λ in the range of 0.0254–0.0294 W/(m · K). The thermal properties of foams depending on the type and chemical composition of the material. Depending on the used substrates, their molar ratio, type, synthesis conditions, modifying agents and catalysts, a different polyurethane material is obtained.
Comparison of Oxidative Stress Levels in Healthy Children and Children with Allergic Rhinitis
Authors: Danevska Ivana Arnaudova , Jakjovska Tatjana , Zendelovska Dragica , Atanasovska Emilija , Dzekova-Vidimliski Pavlina , Petrushevska Marija , Boshkovska Katerina , Popova Gorica , Tasevska Elena Gjinovska , Balkanov Trajan
Published: March 2023

Background/aim: Allergic rhinitis (AR) is characterized by chronic inflammation of the nasal mucosa. Under the influence of exogenous factors - allergens, reactive oxygen species (ROS) are released during cellular metabolism. They induce a series of pathological changes in the mucosa. Oxidative stress is а result of an imbalance between the production of ROS and the ability to neutralize them. The aim of this study is to compare the levels of oxidative stress between healthy children and children with allergic rhinitis.

Material and methods: A total number of 60 children were included (30 healthy children and 30 children with AR). The oxidative stress index was determined by using the FRAS 5 (Free Radical Analytical System) Bravo system. Demographic characteristics, medical history, children’s living conditions and eating habits were obtained from the questionnaire. Anthropometric measurements and the absolute number of eosinophils in the peripheral smear were performed on each child.

Results: This study showed high oxidative stress index and a significantly higher value of the absolute number of eosinophils in the peripheral smear in children with AR in comparison to healthy children (p<0.05). The group of children with AR had more atopic characteristics and was more exposed to passive smoking than healthy children.

Conclusion: Compared to healthy children, children with AR have a high index of oxidative stress, despite of the very high mean value of the concentration of water-soluble antioxidants in serum (PAT test) in the group of children with AR.
Efficacy and Safety of Empagliflozine and Semaglutide (Once Weekly) in T2DM Patients in Shtip
Authors: Nakova Valentina Velkoska , Nakov Zoran , Dokuzova Stojka , Prosheva Tatjana , Krstevska Brankica
Published: March 2023

Objective: The efficacy and safety of the following new treatment agents were analyzed: once weekly semaglutide (OWSem) and the empagliflozine (Empa). This was done with patients with type 2 diabetes mellitus (T2DM) at the Clinical Hospital in Shtip, R.N. Macedonia.

Material and methods: One-hundred-twenty-one diabetic patients were treated for the first time with OWSema or Empa and were retrospectively analyzed. Glycemic control, serum creatinine, decrease in weight, co-morbidities, and hospitalization during treatment were recorded.

Results: Among the 61 patients treated with OWSema and 60 patients treated with Empa, there were not any statistically significant differences in age, sex, BMI, duration of diabetes, and a number of patients treated with insulin. Both agents (OWSema and Empa) achieved statistically significant HbA1c reduction after 6, 12, and 18 months (9.2; vs. 7.6; 6.7; 6.6, and 9.3; vs. 7.5; 7.2, 7.5%, respectively) treatment. There were not any differences in the value of creatinine between the visits in both groups. During the period of 2 years, 3 patients (5%) from the Empa group died, all with multiple comorbidities. One patient from Empa group was hospitalized because of acute pulmonary edema and two from the OWSema group because of TIA and acute coronary syndrome. The median decrease in weight was more pronounced in the OWSema group (6.0 vs. 4.0kg). Five patients stopped the treatment with Empa because of a simple urinary infection, and one stopped the OWSema because of GIT intolerance. Eight patients did not tolerate the dose of 1mg, and they therefore continued with 0.5mg of OWSema.

Conclusion: Once weekly treatment with semaglutide and empagliflozine achieves a great reduction in HbA1c, and as such are safe for treatment of T2DM.
Bony Cochlear Nerve Canal as a Predictor for Cochlear Nerve Status in Prelingually Deaf Children
Authors: Dokoska Marija , Nikolova Sonja , Kiteva-Trencevska Gordana , Tilman Keck , Netkovski Jane
Published: March 2023

Objectives: The presence of a functional cochlear nerve is a key issue in the preoperative evaluation of pediatric candidates for cochlear implants. Correlations between cochlear nerve deficiency (CND) and bony abnormalities of the labyrinth or bony canal of the cochlear nerve are not yet well understood. The aim of this study was to determine whether the width of the bony cochlear canal (BCNC) can serve as a reliable predictive factor for the existence of a CND.

Materials and methods: A total of 11 children with a confirmed diagnosis of prelingual, severe sensorineural hearing loss were included in this study. In all patients, indication for CI was confirmed and according to the preoperative protocol, high-resolution CT and MR were performed. Reconstructions at a distance of 0.6 mm of the axial plane and images from the HRCT of temporal bones were used for measuring the width of the BCNC. The cochlear nerves were evaluated on axial and sagittal – oblique T2 – MRI images and classified as normal, hypoplastic or aplastic. Two factors were reviewed retrospectively: the presence of inner ear anomalies and the relationship between BCNC stenosis and the existence of CND.

Results: From a total of 22 temporal bones analyzed (22 ears in 11 patients), inner ear malformations were detected in 6 ears from 3 patients (27.27%). All three children had a bilateral malformation, in one it was Michel deformity and in two it was IP2 (incomplete partition 2). The BCNC diameter ranged from 0.1mm to 2.33mm with a mean value of 1.46±0.6mm. CND was recorded in 4 of 22 ears and all were associated with stenosis of the BCNC. In a total of three ears with a stenotic canal, we obtained a normal finding for the cochlear nerve on MR.

Conclusion: Children with BCNC stenosis have a high incidence of CND. A narrowed BCNC on CT can be an indicator for the selection of children with sensorineural hearing loss who will need to be additionally referred for MRI in order to definitively assess the status of the cochlear nerve.
Dedicated to Commemorate the 75th Years of India’s Independence. Editorial for a Special Issue on Indian logic
Authors: Mohanta Dilipkumar
Published: March 2023

This special issue on Indian logic consists of nine research papers dealing with different aspects of Indian logic by nine distinguished authors. It is divided into three sections, such as Nyāya logic, Buddhist logic and Jaina logic. The papers deal with the issue of inference and allied concepts from both historical and conceptual considerations. Indian logic followed linguistic model and thereby in India it gives the foundation of epistemology and the development of philosophy of language.
Conocimiento tradicional sobre Bacopa procumbens (Mill.) Small en Huasca de Ocampo, Hidalgo, México
Authors: Ríos-Cortés Ada María , Ocampo-Fletes Ignacio , Díaz-Ruiz Ramón , Gonz´ález-Cortázar Manasés , Rosas-Morales Minerva , López Pedro Antonio
Published: March 2023

Objetivo: Identificar el conocimiento sobre el uso tradicional de Bacopa procumbens que conservan los pobladores del municipio de Huasca de Ocampo, Hidalgo, México. Metodología: El estudio se basó en una entrevista estructurada aplicada a 26 informantes, mediante un muestreo por conveniencia. Se realizó el análisis descriptivo de la información por medio de frecuencias y un análisis multivariado de correspondencias múltiples. Resultados: El conocimiento tradicional de esta planta se concentra en las amas de casa con edad entre 40 y 50 años; este conocimiento fue trasmitido por familiares, el uso tradicional que le dan a la especie B. procumbens es medicinal y se usa para disminuir o aliviar el dolor de estómago, sanar heridas, calmar el dolor de muelas, calmar el dolor de riñón, eliminar la hinchazón y fiebre. La planta es recolectada en el campo, solo en la cantidad que será usada, lo que puede ayudar en parte a la conservación del recurso, aunque debe prevenirse la sobre explotación. Limitaciones: Existen pocas personas que conocen la planta y sus propiedades. Conclusiones: El conocimiento tradicional de la planta se centra en mujeres amas de casa, la forma más común de uso es hervida y se aplica principalmente para dolor de estómago, y otros problemas de salud.
PENGARUH PERBANDINGAN MALTODEKSTRIN DAN GUM ARAB TERHADAP KARAKTERISTIK ENKAPSULAT EKSTRAK PEWARNA DAUN SINGKONG (Manihot esculenta C.)
Authors: Noviyani Tiara , Wartini Ni Made , Harsojuwono Bambang Admadi
Published: March 2023

Daun singkong dapat dijadikan sebagai pewarna alami karena mengandung klorofil. Senyawa klorofil dapat diperoleh dengan cara ekstraksi dan diproses lebih lanjut menjadi bubuk enkapsulasi. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh perbandingan enkapsulan maltodekstrin dan gum arab terhadap karakteristik enkapsulat ekstrak pewarna daun singkong (Manihot esculenta C.) dan untuk menentukan perbandingan enkapsulan maltodekstrin dan gum arab terbaik dalam menghasilkan enkapsulat ekstrak pewarna daun singkong (Manihot esculenta C.). Penelitian ini menggunakan Rancangan Acak Kelompok dengan perlakuan perbandingan maltodekstrin dan gum arab yang terdiri dari 9 taraf yaitu (3:1), (2:1), (3:2), (1:0,75), (3:2,5), (1:1), (2:3), (1:2), dan (1:3). Hasil penelitian menunjukkan bahwa perlakuan perbandingan maltodekstrin dan gum arab berpengaruh sangat nyata terhadap rendemen, kadar air, kelarutan, tingkat kecerahan (L*), tingkat kemerahan (a*), tingkat kekuningan (b*), kadar klorofil total, kadar klorofil a, efisiensi enkapsulasi namun tidak berpengaruh terhadap kadar klorofil b. Perlakuan terbaik dalam menghasilkan enkapsulat ekstrak pewarna daun singkong adalah pada perbandingan maltodekstrin dan gum arab (1:3) dengan karakteristik rendemen 79,76%, kadar air 9,20%, kelarutan 38,13%, tingkat kecerahan (L*) 41,75, tingkat kemerahan (a*) 2,85, tingkat kekuningan (b*) 14,79, kadar klorofil total 10,58 ppm, kadar klorofil a 4,39 ppm, kadar klorofil b 6,19 ppm dan efisiensi enkapsulasi 69,92%.
Faktor-Faktor Yang Mempengaruhi Produksi Tomat di Kelurahan Kawangu Kecamatan Pandawai Kabupaten Sumba Timur
Authors: Wadu Junaedin
Published: March 2023

Horticultural products such as tomatoes are complementary ingredients that must be met for many consumers because they are needed as a complement in making juice, chili sauce, and other industrial raw materials. In addition, the need for tomatoes is also increasing along with the increase in population and the number of culinary businesses at this time, so that tomato production needs attention. This study aims to analyze the factors that influence tomato production in Kawangu Village, Pandawai District, East Sumba Regency. The location selection was determined purposively with the consideration that Kawangu Village is one of the centers of tomato production in East Sumba Regency. The research method used in this study is a quantitative method with the number of respondents used in this study as many as 40 people who were taken randomly. The data analysis technique uses the Cobb-Douglas production function model in the form of the natural logarithm (ln). The results of this study indicate that the use of inputs such as land area and manure has a significant effect on tomato production, while other factors such as seeds, urea fertilizer, pesticides, and labor have no effect on tomato production in Kawangu Village.
Strategi Peningkatan Kualitas Roti Tawar di PT. Indoroti Prima Cemerlang Cabang Bali
Authors: Sianturi Greace Tesalonika , Satriawan I Ketut , Anom Yuariani Dewa Ayu
Published: March 2023

Bread is one of the most popular foods. Bread consists of two types, namely white bread and sweet bread. PT Indoroti Prima Cemerlang Bali Branch is a company engaged in the bakery industry. Thicker white bread is one of the products of PT Indoroti Prima Cemerlang Bali Branch which is the focus of increasing sales. Therefore, this study aims to determine the attributes of thicker white bread that can satisfy consumer needs and provide solutions for improvement. Sampling was done by purposive sampling method and data collection was done by distributing questionnaires directly to respondents and observation. The analysis was carried out using the quality function deployment (QFD) method. The results obtained in this study are that there are 8 attributes that are considered very important by consumers, namely expiration, food safety, texture, price, taste, standard shape, color and aroma with the highest satisfaction value of the expiration date attribute (5.00) and the lowest texture attribute (4.29). The strategy to improve product quality is to prioritize improvements to the attributes of texture, taste, standard shape, color, and aroma. The priority for improving technical parameters is combustion, preparation of raw materials and second mixing.
Перспективы использования плодов ореха маньчжурского в пищевых технологиях и биотехнологиях
Authors: Левчук Т.В. , Земляк К.Г. , Левочкина Л.В. , Чеснокова Н.Ю. , Ли Н.Г.
Published: March 2023

В монографии приведены сведения об ареале, ресурсах, составе и свойствах ореха маньчжурского (Juglans mandshurica Maxim.), показана целесообразность заготовки ореха в промышленных масштабах и его комплексного использования в пищевых технологиях и биотехнологиях. Обоснованы биотехнологии комплексной переработки плодов маньчжурского ореха, получения натурального красителя из околоплодника, масла, шрота и белкового концентрата из ядра ореха. Разработаны рецептуры и технологические режимы пищевых изделий с использованием продуктов переработки ореха (хлебобулочных и сахаристых кондитерских изделий, десертов, растительных масел-смесей, майонезов, мясных полуфабрикатов, алкогольных напитков), характеризующихся повышенной пищевой и физиологической ценностью. Книга представляет интерес для работников пищевой промышленности и лесного хозяйства, учёных и студентов. Ключевые слова: пищевая биотехнология, комплексная переработка, пищевые продукты, орех маньчжурский, околоплодник, красители, биологически активные вещества.
Factors affecting purchasing behavior on marketplace applications in Jakarta during the Covid-19 period
Authors: Cahya Jovian , Cokki
Published: March 2023

This study aims to test the analysis of factors that influence purchasing behavior on marketplace applications, especially in the Jakarta area during the Covid-19 period. The sample taken was 132 respondents in the Jakarta area. The convenience method is used by distributing questionnaires which are then processed using PLS-SEM. The result of this study is that purchasing intentions when shopping in marketplace applications during the Covid-19 period in the Jakarta area are influenced by trust, safety, and risks.

Penelitian ini bertujuan untuk menguji analisis faktor-faktor yang memengaruhi perilaku pembelian pada aplikasi marketplace khususnya di wilayah Jakarta dalam masa Covid-19. Sampel yang diambil adalah 132 responden di wilayah Jakarta. Metode convenience digunakan dengan cara menyebarkan kuesioner yang kemudian diolah menggunakan PLS-SEM. Hasil dari penelitian ini adalah keputusan pembelian dipengaruhi oleh kepercayaan, keamanan, dan risiko pada saat berbelanja dalam aplikasi marketplace pada masa Covid-19 di wilayah Jakarta.
Pengaruh capital structure, working capital turnover, dan working capital management terhadap profitabilitas perusahaan kontraktor yang tercatat di BEI Indonesia
Authors: Justine Levina , Firdausy Carunia Mulya
Published: March 2023

This study aims to analyze the effects of capital structure, working capital turnover, and working capital management on profitability of contracting companies in Indonesia for the period 2014-2019. Data sources were collected from financial report of contractor companies in Indonesia for the period 2014-2019 which are listed on the Indonesia Stock Exchange. Method used to analyze the data was Multiple regression analysis as suggested in the literature. The results of this study are as follows (1) both Capital Structure and Working Capital Turnover have partial effects on ROA in Contracting Companies in Indonesia for the period 2014-2019. (2) Working Capital Management has no partial affection ROA in Contracting Companies in Indonesia for the period 2014-2019. (3) There is a joint influence of Capital Structure, Working Capital Turnover, and Working Capital Management on ROA in Contracting Companies in Indonesia for the period 2014-2019.

Penelitian ini bertujuan untuk menganalisis pengaruh struktur modal, perputaran modal kerja, dan manajemen modal kerja terhadap profitabilitas pada perusahaan kontraktor yang terdaftar di Indonesia periode 2014-2019. Sumber data dikumpulkan dari laporan keuangan perusahaan kontraktor di Indonesia periode 2014-2019 yang terdaftar di Bursa Efek Indonesia. Metode yang digunakan untuk menganalisis data adalah analisis regresi berganda seperti yang disarankan dalam literatur. Hasil dari penelitian ini menunjukkan (1) adanya pengaruh Struktur Modal dan Perputaran Modal Kerja secara parsial terhadap ROA pada Perusahaan Kontraktor di Indonesia periode 2014-2019.(2) tidak adanya pengaruh Manajemen Modal Kerja terhadap ROA pada Perusahaan Kontraktor di Indonesia periode 2014-2019. (3) adanya pengaruh Struktur Modal, Perputaran Modal Kerja, dan Manajemen Modal Kerja secara simultan terhadap ROA pada Perusahaan Kontraktor di Indonesia periode 2014-2019.
Faktor yang memengaruhi firm value dengan mediasi capital structure
Authors: Anthony  , Wijaya Henryanto
Published: March 2023

With capital structure as an intervening variable, the purpose of this study was to collect empirical evidence regarding the effects of profitability, sales growth, and company size on firm value in property sector companies listed on the Indonesia Stock Exchange (IDX) in 2019-2021. The purposive sampling technique was used to select a sample of 51 businesses from the secondary data used in this study. The SmartPLS 4.0.8.4 application was used in this study. Company size and capital structure have a significant effect on capital structure, and capital structure is unable to mediate the relationship between profitability, sales growth, and firm size on firm value, according to the findings of this study. On the other hand, profitability and sales growth do not have a significant effect on capital structure.

Dengan struktur modal sebagai variabel intervening, tujuan penelitian ini adalah untuk mengumpulkan bukti empiris mengenai pengaruh profitabilitas, pertumbuhan penjualan, dan ukuran perusahaan terhadap nilai perusahaan pada perusahaan sektor properti yang terdaftar di Bursa Efek Indonesia (BEI) tahun 2019-2021. Teknik purposive sampling digunakan untuk memilih sampel sebanyak 51 usaha dari data sekunder yang digunakan dalam penelitian ini. Aplikasi SmartPLS 4.0.8.4 digunakan dalam penelitian ini. Ukuran perusahaan dan struktur modal berpengaruh signifikan terhadap struktur modal, dan struktur modal tidak mampu memediasi hubungan antara profitabilitas, pertumbuhan penjualan, dan ukuran perusahaan terhadap nilai perusahaan, menurut temuan penelitian ini. Sedangkan profitabilitas dan pertumbuhan penjualan tidak berpengaruh signifikan terhadap struktur modal.
Jurnal Manajemen Bisnis dan Kewirausahaan Vol. 7 No. 2
Authors: Sekretariat JMBK
Published: March 2023

JMBK Vol. 7 No. 2 Edisi Maret 2023
USULAN DESAIN STOPPER SEBAGAI ALAT BANTU PROSES GROOVING PADA PART SUCTION COVER POMPA SENTRIFUGAL TIPE Y DI PT X
Authors: Manikari Ricky Soleman , Darmawan Steven
Published: March 2023

Centrifugal pumps have a design consisting of an impeller rotor and an inlet channel in the middle. When the rotor of impeller rotates, the fluid will flow into the casing due to the centrifugal force. Suction Centrifugal pump casing is designed in the form of a diffuser that surrounds the pump impeller. This diffuser is more commonly known as the volute casing. In accordance with the function of the diffuser, the volute casing serves to reduce the flow velocity of the fluid entering the pump. The stopper is a fixture that is used as a support for the suction cover part during the grooving process. Stopper is used so that the surface turning results are not oval . Grooving is a process to form a groove on a workpiece by using a lathe or milling machine and others . To give the results of the groove surface on the suction cover, it is necessary to carry out a grooving process. The grooving process is used to smooth the grooves on the suction cover surface. However, because the diameter of the suction cover is quite large, an additional fixture is needed to support the suction cover so that it remains in an even position during the grooving process. The stopper is important thing in the process of grooving suction cover type E-100 50 with a spindle speed of 180 rpm. The dimensions of the proposed stopper are 155.88 mm long, 150mm wide, and 150m high. So this stopper fixture must be strong and stable during the machining process. The purpose of this paper is to propose a 3D fixture design during the process of grooving the suction cover E 100 50. This research was carried out theoretically using data machining and parts  obtained during observation. Compilation of observational data in the form of images and strength analysis in 3 dimensions using Autodesk Fusion 360 software. The results of this study are divided into 2 parts, 3D design and strength analysis including von mises stress, displacement and safety factor. From the results of the simulation von mises in picture 8, it shows that the stress that occurs is 32.59 MPa at the most critical part. The critical part is the upper support section which is the center of support. From the results of the simulation displacement in picture 9 it shows that the change (displacement) in the design stopper maximum so that deformation occurs, which is indicated by a red color of 0.002668mm. Changes above 1mm the material will break. This shows that the shape and dimensions of the stopper are said to be in the safe category. From the picture of the results of thesimulation Safety Factor in picture 10, it shows that the value of the safety factor for a sufficient level of safety is 6.353. If it is less than the value of the safety factor, the material has been deformed or broken because the maximum stress is comparable to or greater than the yield strength of the material.
PENGARUH VARIASI CAMPURAN BAHAN BAKAR BIODISEL MINYAK JELANTAH TERHADAP UNJUK KERJA MOTOR DISEL SATU SILINDER GENERATOR SET
Authors: Jaya Ruzaki Fatra , Afisna Lathifa Putri , Kaspari M.Riyan , Wibisono Krisna Pratama
Published: March 2023

Meningkatnya konsumsi energi bahan bakar fosil menjadi permasalahan yang perlu ditinjau ulang ditandai dengan ketidak seimbangan antara kebutuhan dan sumber energi yang tersedia. Pemanfaatan minyak jelantah sebagai bahan bakar biodiesel dipengaruhi oleh peran dari proses pencampuran dan penambahan katalis yang digunakan. Beberapa metode yang digunakan mulai dari proses esterifikasi, transesterifikasi hingga pemurnian bahan bakar. Penelitian ini bertujuan untuk menganalisa unjuk kerja motor diesel satu silinder dengan variasi beban heater 370, 740, 1110,1480, dan 1850 watt dengan interval kenaikan 370 watt dan putaran mesin konstan 1500 rev/min berbahann bakar dengan formulasi digunakani BMJ0 (dexlite murni), BMJ10, dan BMJ20. Didapatkan hasil daya efektif generator terbesar sama yaitu 1,92 (kW), konsumsi bahan bakar spesifik (sfc) terendah BMJO sebesar 0,05 kg/kW.jam, torsi terbesar yaitu pada bahan bakar BMJ20 sebesar 12,25 (N.m), efisiensi thermal terbesar pada bahan bakar BMJ0 sebesar 1,56%, dan BMEP terbesar pada bahan bakar BMJ20 sebesar 47,36 kPa.Kata Kunci: minyak jelantah, esterifikasi, transesterifikasi, performa motor diesel
OPTIMASI SAMBUNGAN ROTARY FRICTION WELDING (RFW) PADA ALUMINIUM DENGAN VARIASI UKURAN DIAMETER
Authors: Purwaningrum, Yustiasih , Data Pratama, Aldino , Fatha Fathurohman
Published: March 2023

Sambungan las banyak digunakan pada konstruksi dan alat permesinan. Silinder pejal salah satu bentuk material yang sulit disambung dengan menggunakan pengelasan konvensional. Hal tersebut diatasi dengan menggunakan pengelasan Rotary Friction Welding (RFW). Tujuan penelitian ini adalah mendapatkan sifat fisik dan mekanik yang optimum pada sambungan las RFW dengan variasi diameter logam induk. Material yang digunakan adalah Aluminium 4017 dengan variasi diameter 10 mm, 13 mm, dan 16 mm.Proses pengelasan RFW dilakukan menggunakan mesin bubut dengan kecepatan putar spindle mesin bubut yaitu 1170 RPM dan jarak penekanan yaitu 10 mm. Dari hasil pengamatan metallografi makro hasil sambungan terdapat sedikit porositas pada berbagai variasi diameter. Dari pengujian mekanik diketahui bahwa specimen dengan diameter 16 mm mempunyai sifat yang getas karena mempunyai nilai kekerasan tinggi, kekuatan tarik tinggi dan nilai regangan yang paling rendah. Hasil pengujian tarik, nilai tegangan maksimum dan nilai regangan tertinggi yaitu dengan diameter 10 cm , dengan nilai tegangan tarik 165,36 MPa dan nilai regangan 29,81%. Untuk pengujian bending di peroleh tegangan tertinggi adalah diameter 10 mm yang nilainya adalah 209,99 MPa diikuti oleh diameter 13 mm yaitu 158,36 MPa dan nilai kekuatan bending terendah terdapat pada hasil las dengan diameter 16 mm dengan nilai
CONSTRUÇÃO E VALIDAÇÃO DE CARTILHA EDUCATIVA SOBRE SUPORTE BÁSICO DE VIDA PARA ESTUDANTES DO ENSINO MÉDIO
Authors: Vieira Thatiana Zilah Xavier , Prado Roberta Teixeira , De Faria Luciane Ribeiro , Alvim André Luiz Silva , Carbogim Fábio da Costa
Published: March 2023

O objetivo deste estudo é construir e validar uma cartilha educativa para estudantes do ensino médio sobre Suporte Básico de Vida nas escolas. Trata-se de uma pesquisa metodológica, realizada em três etapas. Na primeira etapa foi realizada revisão bibliográfica, na segunda etapa procedeu-se a elaboração da cartilha educativa e por fim, a validação do material por especialistas. Entre os resultados destaca-se que a cartilha aborda as principais recomendações acerca da segurança do socorrista e suporte básico de vida no adulto e possui 14 páginas. Conclui-se que todos os itens da cartilha educativa obtiveram índice de validade de conteúdo maior que 0,82 conseguindo a validação.
Strategi Learning Tournament Berbasis Digital Timer Sebagai Solusi Alternatif Pembelajaran IPA Biologi Sekolah
Authors: Subkhi Nur , Yuliana Eva , Hamidah Idah , Rois Abdul
Published: March 2023

Pendidikan merupakan sarana utama dalam upaya meningkatkan sumber daya manusia. Oleh karena itu, peran pendidikan (pembelajaran di kelas) sangat penting sebagai kunci utama untuk menciptakan SDM yang berkualitas. Penelitian ini bertujuan untuk mengetahui gambaran kelayakan (validasi) strategi learning tournament berbasis digital timer sebagai solusi alternatif pembelajaran IPA biologi sekolah, sebagai produk hasil pengembangan. Penelitian ini merupakan penelitian pengembangan (Reseaerch development/ RD) yang mengacu pada Sugiyono dan Brog and Gall. Teknik pengambilan sampel menggunakan purposive sampling. Sampel berjumlah enam orang ahli bidang pembelajaran biologi. Sampel terdiri atas satu dosen, tiga guru biologi SMA, dua guru IPA SMP. Teknik pengumpulan data menggunakan  instrumen: lembar validasi produk dan lembar wawancara tersetruktur. Teknik pengumpulan data terdiri atas empat tahapan, yaitu: a) Potensi dan masalah, b) Pengumpulan data awal, c) Desain produk, dan d) Validasi desain/ produk. Analisis data yang digunakan, yaitu: data kualitatif dan data kuantitatif. Hasil penelitian menunjukkan bahwa produk strategi pembelajaran learning tournament berbasis digital timer secara umum “sangat valid”. Artinya, produk layak digunakan karena dapat memunculkan (nampak) keaktifan belajar siswa “sangat tinggi”, memunculkan minat belajar “sangat tinggi”, dan memunculkan karakter bangsa siswa “sangat tinggi” sesuai indikator penilaian yang ditentukan.
Pengaruh Praktikum Berbasis Video Terhadap Hasil Belajar Peserta Didik Kelas XI SMAN 02 Bombana
Authors: Rosita Rosita , Syahriani Syahriani , Jamilah Jamilah
Published: March 2023

Penelitian ini bertujuan untuk mengetahui pengaruh pelaksanaan praktikum berbasis video terhadap hasil belajar peserta didik. Masalah dalam penelitian ini dialami pendidik karena pelaksanaan praktikun di sekolah tersebut belum dapat dioptimalkan. Metode penelitian yang digunakan adalah Quasi Eksperimen menggunakan desain Non-equivalent Control Group Design. Sampel pada penelitian ini berjumlah 44 peserta didik dan dibagi menjadi dua kelompok yaitu kelompok kelas kontrol dan kelompok kelas eksperimen, menggunakan teknik Purposive Sampling. Instrumen yang digunakan adalah tes hasil hasil belajar dan lembar observasi. Teknik analisis data yang digunakan adalah analisis  deskriptif dan analisis inferensial menggunakan uji prasyarat dan uji independent sample t-test. Berdasarkan hasil penelitian yang dilakukan, skor hasil belajar peserta didik pada kelas yang diajar tanpa pelaksanaan praktikum berbasis video (kontrol) berada pada kategori baik dengan jumlah rata-rata 66,26 sedangkan skor hasil belajar peserta didik pada kelas yang diajar dengan pelaksanaan praktikum berbasis video (eksperimen) berada pada kategori sangat baik dengan jumlah rata-rata 84,67. Hasil analisis inferensial data menunjukkan bahwa nilai signifikansi yang diperoleh yaitu thitung 0,0000,05 sehingga dapat disimpulkan bahwa  terdapat perbedaan signifikan antara hasil belajar peserta didik yang diajar dengan pelaksanaan praktikum berbasis video dan peserta didik yang diajar tanpa pelaksanaan praktikum berbasis video.
Remote Inspection of Businesses in Poland during the COVID-19 Pandemic
Authors: Hołda-Wydrzyńska Anna
Published: March 2023

The extraordinary situation in which entrepreneurs and public administration bodies found themselves during the COVID-19 pandemic had its impact also on polish legal regulations. The exceptional circumstances have had their bearing on the provisions of the Polish Law on Entrepreneurs Act of 6 March 2018 under which the manner in which inspection bodies contact inspected businesses, has changed in the wake of the ongoing global COVID-19 pandemic. The amendment to the provisions of the Law on Entrepreneurs introduced to the Polish legal order a formula of the so-called remote or hybrid inspections of businesses. The purpose of this article is to present the conditions and principles of conducting remote and hybrid inspections in Poland.
Przepis art. 299 Kodeksu spółek handlowych jako funkcja prawa o niewypłacalności
Authors: ADAMUS RAFAŁ
Published: March 2023

Przepis art. 299 Kodeksu spółek handlowych nawiązuje do treści art. 298 Kodeksu handlowego. Polski ustawodawca model spółki z ograniczoną odpowiedzialnością generalnieoparł na regulacji niemieckiej. Niemniej z uwagi na częste przypadki nadużywania formy spółki kapitałowej wprowadził szczególną odpowiedzialność członków zarządu. Regulacja art. 299 Kodeksu spółek handlowych przez lata była przedmiotem ożywionej debaty naukowej i wielu orzeczeń sądowych. W niniejszym opracowaniu stawiana jest teza, że wskazana regulacja jest funkcją prawa upadłościowego. Konsekwencją tej tezy jest wskazanie na zakres odpowiedzialności członka zarządu spółki z ograniczoną odpowiedzialnością, który podejmieobronę w procesie. Nie w każdym przypadku terminowego złożenia wniosku o upadłośćdojdzie do pełnego zaspokojenia wierzycieli. Przeciwnie – dywidenda upadłościowa jeststatystycznie bardzo niska. W opracowaniu wyrażono pogląd, że z uwagi na wyjątkowąkonstrukcję odpowiedzialności członków zarządu za zobowiązania osoby prawnej nie jest dopuszczalna rozszerzająca wykładnia pojęcia szkody. Wreszcie opracowanie wskazuje na znaczenie terminu wymagalności roszczenia dla ustalenia, który z członków zarządu, kolejno sprawujących funkcje, może ponosić odpowiedzialność cywilną.
Klímakockázatok mérése a közvetett kibocsátások figyelembevételével
Authors: Szendrey Orsolya , Dombi Mihály
Published: March 2023

Napjainkban a klímaváltozás a pénzügyi piacokat is teljesen újszerű kihívások elé állítja, aminek hatására a zöld szempontok megjelenése explicit módon megkövetelt szabályozói és befektetői elvárássá válik. A legtöbb, a piacot ekképpen befolyásoló jelentés valamilyen szabályozó által meghatározott sztenderdhez igazodás alapján értékeli a termék vagy folyamat klíma-, illetve környezetvédelmi hatásait. Előfordulhat azonban, hogy a mérés eszközéül szolgáló módszerek nem írják le megfelelően az adott befektetés és a természeti erőforrások viszonyát. A legtöbb elemzés kizárólag a közvetlen kibocsátások alapján értékeli az egyes ágazatokhoz kapcsolódó befektetéseket, míg a teljes kibocsátás jelentős részét képező közvetett hatások nem kerülnek figyelembevételre. Tanulmányunk a jelenleg alkalmazott módszereket és eredményeket veti össze a közvetett hatásokat is figyelembe vevő számításokkal.
Cartão interativo como tecnologia educativa para prevenção da tuberculose
Authors: Santos Dayanne de Nazaré dos , Martins Fernanda Teresa da Silva , Silva Gerciane Silva da , Cabral Ívany Caroline Silva , Dias Kimberly Gabriela do Socorro Pinto , Castro Pâmela Correia , Lima Nyvia Cristina dos Santos , Cordeiro Juliana Pereira Pinto , Naka Karytta Sousa , Castro Nádile Juliane Costa de
Published: March 2023

Objetivo: Relatar a experiência do desenvolvimento de uma tecnologia educacional do tipo cartão interativo para prevenção da Tuberculose entre universitários. Relato de experiência: Esta experiência foi realizada por meio de uma atividade extensionista no percurso da formação em Enfermagem em Saúde Coletiva em um curso de graduação em Enfermagem de uma universidade pública federal da região norte. Participaram sete discentes e um docente realizado durante o período de setembro a dezembro de 2022. Entre as competências elencadas no processo de formação há o treinamento para prevenção de agravos endêmicos.  Elencou-se os seguintes tópicos temáticos para a produção da tecnologia por meio de uma revisão da literatura: Conceito e transmissão da TB; Epidemiologia entre jovens; Tuberculose e pandemia, Co-Infecções e diferenças sintomáticas e tratamento e prevenção, sendo a experiência analisada por meio da Teoria da Atividade. A tecnologia foi elaborada por meio de editor de imagens colaborativo e interativo com protótipo inserido em repositório de acesso aberto.  Considerações finais:  A tipologia do tipo cartão interativo é inovadora, acessível e dinâmica, sendo potencial para mediar prevenção de doenças como da Tuberculose e a prevenção de agravos de forma criativa e potencial para mediar aprendizagem e desenvolvimento de tecnologias educativas.
Distúrbios do Sono na População Pediátrica
Authors: Pasqua Ana Lívia Felippe da Silva , Mezadri Brenda Cardoso Brentini , Delmônico Beatriz Liporaci , Bertolino Heloisa Faria , Hencizo Thayná Lima Del Bianco , Chavaglia Leonardo Castro Ribeiro
Published: March 2023

Objetivo: Revisar estudos acerca dos principais distúrbios do sono que acometem a população pediátrica, levando em consideração suas manifestações clínicas e tratamentos disponíveis. Revisão bibliográfica: O sono, processo vital para a manutenção da homeostase do corpo, apresenta suma importância no desenvolvimento infanto-juvenil, já que é fundamental para o revigoramento do corpo e do cérebro. Sendo assim, ocorre para cada faixa etária pediátrica um padrão circadiano a fim de suprir as necessidades fisiológicas do período de crescimento correspondente. Entretanto, esse ciclo natural é frequentemente desequilibrado por distúrbios do sono (DS), que tornaram-se queixas prevalentes nos consultórios de pediatria. Considerações finais: As parassonias compõem um grupo heterogêneo de síndromes que prejudicam o sono dos pacientes. Na população pediátrica, podem comprometer o desenvolvimento e a saúde dos mesmos. É vital o conhecimento dos profissionais acerca desse conjunto de doenças para correto diagnóstico e consequente tratamento em tempo oportuno, evitando desfechos desfavoráveis.
Trait emotional intelligence as predictor of psychological health in undergraduate medical students: A hierarchical multiple regression approach
Authors: Jain Preeti , Jain Peeyush
Published: March 2023

Objectives:

Trait emotional intelligence (TEI) is a key personality construct by which an individual recognizes, understands, expresses and regulates emotions in self and others to adapt to environments or achieve one’s goals. TEI skills are modifiable and have a potential to significantly influence psychological health (PH) of a person. The aims of current work were to evaluate relationship between TEI and PH of medical students and to explore the incremental validity of TEI to predict psychological distress beyond sociodemographic and educational factors in them.

Materials and Methods:

One hundred and thirty-two medical students (mean age 18.02 years) participated in this cross-sectional study. TEI and PH were assessed using TEI questionnaire short form (TEIQue-sf) and depression, anxiety and stress scale (DASS-21), respectively. Hierarchical multiple regression analysis was carried out to determine if scores on TEIQue-sf added significantly to the prediction of psychological symptoms in medical students.

Results:

There was a significant negative association (r = −0.57, P < 0.001) between TEIQue-sf and DASS-21 scores. Hierarchical regression analyses revealed that after controlling for sociodemographic and educational variables, TEIQue-sf scores explained a statistically significant increment of variance (P < 0.001) in DASS-21 scores. TEI emerged as best predictor of psychological distress of medical students followed by educational factors. However, sociodemographic profile as an attribute failed to demonstrate significant capacity to predict PH of our participants.

Conclusion:

Our results indicate that TEI is a robust and unique predictor of better PH and plays a positive role in promoting psychological well-being.
Effect of 12-week sports intervention programme on physical fitness and sports performance in individuals with spinal cord injury
Authors: Agarwal Bela , Parab Shrutika Dilip , Amberkar Oshin , Mullerpatan Rajani
Published: March 2023

Objectives:

Inactivity in individuals with spinal cord injury (SCI) results in low physical fitness, cardiopulmonary endurance and poor quality of life. Sports participation is known to enhance physical fitness. Therefore, the present study evaluated effect of a structured, 12-week MGM Sports Intervention for Sports Intervention Program for SCI (SPISI) on physical fitness and throw-ball performance in individuals with SCI.

Materials and Methods:

The study was conducted at MGM School of Physiotherapy and Spinal Cord Injury Rehabilitation centre in Navi Mumbai, India. Following ethical approval, 15 individuals with SCI (80% males and 20% females mean age 33.1 ± 7.2 years) were recruited. Upper-extremity explosive power (medicine-ball-throw), agility (t-test), cardiorespiratory endurance (incremental shuttle wheelchair propulsion test) and ball-throwing capacity (maximal-pass test) were evaluated pre- and post-12-week sports intervention programme (SPISI). The protocol involved strength training of upper extremity training at 50% 1 repetition maximum and participation in throw-ball sport.

Results:

Following training, increase in upper extremity explosive power (11%), cardiopulmonary endurance (5%), agility (8%) and ball-throwing capacity in distance (7%) (P < 0.05) was observed. The large effect size was observed for sports performance (maximal-pass test distance-Cohen’s d 1.261), moderate for cardiorespiratory endurance (incremental wheelchair propulsion test distance Cohen’s d 0.517) and upper extremity explosive power (medicine-ball throw distance 0.593). Increment in all outcome variables was greater than minimal clinically important difference.

Conclusion:

Sports intervention programme (SPISI) for 12 weeks brought about minimal clinically important difference in upper-extremity explosive power, agility, cardiorespiratory endurance and sport-specific performance and should be included as an integral component of rehabilitation of individuals with SCI.
Effects of cloperastine, a non-narcotic antitussive, on the expression of GIRK channels in the brain of methamphetamine-induced hyperactive mice
Authors: Soeda Fumio , Kinoshita Mizue , Fujieda Yoshiko , Takahama Kazuo
Published: March 2023

Objectives:

Centrally-acting antitussives with inhibitory effects on G protein-coupled inwardly rectifying potassium (GIRK) channels have been shown to also inhibit methamphetamine-induced hyperactivity in mice. In this study, we examined if cloperastine, which is the most potent inhibitor of the GIRK channels among antitussives, is sensitive to the expression levels of GIRK channels in the brain of methamphetamine-treated mice.

Materials and Methods:

The brain tissues have been removed and the total RNA has been extracted from tissues. The mRNA levels were evaluated using semiquantitative reverse transcription-polymerase chain reaction.

Results:

The concentration levels of the mRNA of GIRK channels within the ventral midbrain of methamphetamine-treated mice increased as compared with that in control and cloperastine reduced an upregulation in GIRK2, one of the subunits of the GIRK channels, by the injection of methamphetamine.

Conclusion:

These findings suggest that cloperastine might ameliorate hyperactivity by inhibiting the GIRK channels in the brain.
The Environmental Feasibility of Decentralised Solar Ammonia
Authors: D'Angelo Sebastiano C. , Martín Antonio J. , Guillén-Gosálbez Gonzalo , Pérez-Ramírez Javier
Published: March 2023

Intense efforts have been devoted to developing green and blue centralised Haber-Bosch processes (gHB and bHB, respectively), but the feasibility of a decentralised and sustainable scheme has yet to be assessed. Here we reveal the conditions under which small-scale systems based on the electrocatalytic reduction of nitrogen (eN2R) powered by photovoltaic energy (NH3-leaf) could become a competitive technology in terms of environmental criteria. To this end, we calculated energy efficiency targets based on solar irradiation atlases to guide research in the incipient eN2R field. Even under this germinal state, the NH3-leaf technology would compete favourably in sunny locations relative to the business-as-usual production scenario. The disclosed sustainability potential of NH3-leaf makes it a strong ally of gHB toward a non-fossil ammonia production.
BASIC DIRECTIONS OF STATE POLICY FOR SUPPORTING ENTREPRENEURSHIP
Authors: Бургонов О.В. , Чивирев И.Ю.
Published: March 2023

В статье рассмотрены наиболее значимые инструменты и механизмы поддержки малого и среднего предпринимательства в России и в развитых странах, влияющие на эффективность функционирования бизнеса в условиях экономического кризиса. Выявлены проблемы и решения, направленные на ускорение экономического развития с участием малого и среднего бизнеса. Проведенный авторами комплексный анализ антикризисных направлений государственной политики в ЕС, США и России позволит разработать модели управленческих решений, направленные на повышение эффективности воздействия государства в условиях антироссийских санкций.

The article focuses on the most significant instruments and tools of supporting small and mid-sized businesses applied both in Russia and in the developed countries promoting for the efficient performance of businesses during economic crisis. Problematic issues along with relevant solutions have been revealed in the study aimed at advancing economic development with participation of small and mid-sized business. The authors’ comprehensive analysis of anti-crisis directions of the state policy adopted in EC, USA and in Russia will allow to develop the models of managerial solutions aimed at increasing efficiency of the state influence in the context of anti-Russian sanctions.
SPECIAL TAX REGIMES: LEGAL REGULATION, CHARACTERISTICS, DEVELOPMENT PROSPECTS
Authors: Андреева С.Н.
Published: March 2023

В статье проведен анализ специальных налоговых режимов и рассмотрено их правовое регулирование. Выявлены особенности специальных налоговых режимов и изучены их основные виды. Особое внимание уделено преимуществам и недостаткам налоговых режимов. В исследовании был сделан акцент на один из новых налоговых режимов – автоматизированную упрощенную систему налогообложения (АУСН), представлена его характеристика и рассмотрены основные специфические особенности.

We carry out the analysis of special tax regimes as well as their legal regulation. We reveal the features of special tax regimes and study their main types. Special attention is paid to the advantages and disadvantages of the tax regimes in question. The research is focused on one of the new tax regimes, namely the automated simplified taxation system; we give its characteristic and consider the key specific features.
INFLUENCE OF ECONOMY DIGITALIZATION ON MODERN LABOR MARKET IN RUSSIAN FEDERATION: TRENDS AND CHALLENGES
Authors: Пыженкова Е.С.
Published: March 2023

В статье анализируются основные тенденции трансформации российского рынка труда под влиянием цифровизации. Перечисляются основные направления происходящих изменений, в том числе изменения в законодательстве и государственных программах. Анализируются последствия цифровой трансформации рынка труда в России. Делается вывод о необходимости активного использования институциональных механизмов государственного регулирования рынка труда.

We analyze the main trends of Russian labor market transformation under digitalization. We list the key directions of the changes in question, including the ones concerning the legislation as well as government programs. The consequences of digital transformation of Russian labor market are analyzed. We make a conclusion about the need to actively apply institutional mechanisms of labor market state regulation.