bluuebunny/crossref_metadata_2025 huggingface dataset:
Transcervical submandibular gland surgery; management, outcome, and complications of 120 cases
Authors: Günebakan Çağlar , Kuzu Selçuk , Bucak Abdulkadir , Kahveci Orhan Kemal , Ulu Şahin
Published: May 2022

Objectives Surgical intervention is the treatment procedure of many diseases of the submandibular gland such as sialolithiasis, chronic sialoadenitis, and tumors. This study aims to analyze the management, outcomes, and complications of transcervical submandibular gland excision cases of a tertiary clinic and to discuss the results in light of the current literature knowledge.
Materials and Methods 120 cases who applied to a tertiary otorhinolaryngology clinic between 2014-2019 and who underwent submandibular gland excision were analyzed retrospectively.
Results  Postoperative histopathological results revealed that 108 cases were benign and 12 of cases were malignant. The most frequent benign pathology was chronic sialoadenitis in 82 cases. The most common non-malignant tumor was pleomorphic adenoma in 16 cases. Although the result obtained with fine-needle-biopsy was benign in 2 patients, the histopathological result after surgery was malignant (adenocarcinoma in 1 patient, mucoepidermoid carcinoma in 1 patient). As complications of surgery; marginal mandibular nerve injury in 11 cases (permanent in 2 cases) and hematoma in 7 cases were noted.
Conclusion A benign fine-needle aspiration biopsy result does not necessarily exclude malignancy in submandibular gland masses. As a result, we found that the percentage distribution of our submandibular gland histopathological results is consistent with the literature. Although marginal mandibular nerve injury is one of the most common complications of submandibular gland excision, transcervical submandibular gland excision is still a reliable surgery.
Reproducibility of choroidal thickness measurements in hemodialysis patients: A spectral domain optical coherence tomography study
Authors: Uzel Mehmet Murat , Eroğul Özgür , Eryiğit Eroğul Leyla , Taşlıpınar Uzel Ayşe Güzin , İbiş Afşin , Gobeka Hamidu Hamisi
Published: May 2022

Aside from general body fluid fluctuation, hemodialysis (HD) may cause changes in ocular fluid balance, resulting in changes in subfoveal choroidal thickness (SFCT) and other ocular parameters. As a result, the purpose of this study was to investigate the effects of hemodialysis on the reproducibility of SFCT measured by spectral domain-optical coherence tomography (SD-OCT). Twenty-six HD (26 eyes) patients had their pre- and post-HD SFCT measured, and the results were compared for reproducibility. Following a thorough ophthalmic examination, SD-OCT was performed three times in a row during a single session. The same physician measured SFCT after automatically identifying choroid with a software caliper. Reproducibility parameters, including intra-class correlation coefficients (ICCs), coefficients of variation (COV), and test-retest variability (TRTV) were then calculated. Males made up 53.85% of the 26 HD patients. There was a significant IOP difference between pre-HD (16.42±3.14 mmHg) and post-HD (14.21±2.78 mmHg) (P<0.001). SFCT decreased significantly from pre-HD 243.50±10.23 μm to post-HD 234.29±9.41 μm (P<0.001). ICC value increased significantly after HD, rising from 0.948 to 0.989 (P<0.001, for all). Pre- and post-HD COV values were 1.6% and 0.65%, respectively. Also, pre- and post-HD TRTV values were 7.864±1.996 μm and 3.074±1.536 μm, respectively. In this study, the reproducibility of SFCT as measured by OCT was lower during pre-HD compared to post-HD. Post-HD SD-OCT assessment appears to improve the reliability of clinical outcomes in the diagnosis and monitoring of HD patients.
ЯМР спектроскопическое исследование гетероядерных Ln(III)—Cu(II) металламакроциклических комплексов в водном растворе
Authors: Каткова М.А. , Муравьева М.С. , Забродина Г.С. , Москвитина О.А. , Курский Ю.А. , Кетков С.Ю.
Published: May 2022

Методом ЯМР 1H исследованы полиядерные металламакроциклические Ln(III)—Cu(II) комплексы в водном растворе. Особенность строения комплексов Ln(III)—Cu(II) [15-MC-5] — наличие плоского металламакроцикла, состоящего из пяти парамагнитных атомов Cu(II), и центрального парамагнитного иона лантаноида(III). Наличие диамагнитного La(III) в качестве центрального иона приводит к уширению сигналов ЯМР 1H, сопоставимому с таковым комплекса парамагнитного Dy(III), в то время как комплексы с парамагнитными ионами легких лантаноидов Ce(III), Pr(III) и Nd(III) демонстрируют существенное сужение линий.
STABILITY-INDICATING HPLC METHOD FOR THE DETERMINATION OF RELATED SUBSTANCES IN LANSOPRAZOLE INTERMEDIATE
Authors: Nagarajan Balaji , Manoharan Gunasekar
Published: May 2022

A novel, reversed-phase liquid chromatographic method was developed and validated for the determination of related substances in lansoprazole intermediate. Symmetric peak shape was on a C18 stationary phase with the dimensions of 250 mm column length, 4.6 mm as internal diameter, 5 microns particles with an economical and straightforward mass-compatible mobile phase combination of formic acid/triethylamine and acetonitrile delivered in gradient mode at a flow rate of 1.0 mL/min at 260 nm. The resolution between lansoprazole intermediate (LAN20) and its impurities (LAN20-I & LAN20-II) in the developed method was more than 2.0, indicating a significant separation. Regression analysis shows a correlation coefficient greater than 0.999 for lansoprazole intermediate and its related substances. The detection and quantitation limits of lansoprazole intermediate and its impurities are 0.01% and 0.005%. This method indicates that the recovery at different levels is 90 to 110% accurate. The test solution was stable in the diluent for 48 h and subjected to stress conditions. The mass balance was close to 99.5%.
CGP-based Logic Flow: Optimizing Accuracy and Size of Approximate Circuits
Authors: Berndt Augusto André Souza , Abreu Brunno , Campos Isac S. , Lima Bryan , Grellert Mateus , Carvalho Jonata T. , Meinhardt Cristina
Published: May 2022

Logic synthesis tools face tough challenges when providing algorithms for synthesizing circuits with increased inputs and complexity. Machine learning techniques show high performance in solving specific problems, being an attractive option to improve electronic design tools. We explore Cartesian Genetic Programming (CGP) for logic optimization of exact or approximate Boolean functions in our work. The proposed CGP-based flow receives the expected circuit behavior as a truth-table and either performs the synthesis starting from random circuits or optimizes a circuit description provided in the format of an AND-Inverter Graph. The optimization flow improves solutions found by other techniques, using them for bootstrapping the evolutionary process. We use two metrics to evaluate our CGP-based flow: (i) the number of AIG nodes or (ii) the circuit accuracy. The results obtained showed that the CGP-based flow provided at least 22.6% superior results when considering the trade-off between accuracy and size compared with two other methods that brought the best accuracy and size outcomes, respectively.
Properties and Design of CMOS Thyristor Delay Elements
Authors: Fernandez Ian Christian , De Leon Maria Theresa , Alvarez Anastacia , Hizon John Richard , Rosales Marc
Published: May 2022

The CMOS thyristor delay element and its basic operation are presented in this paper. Six variations of the thyristor design developed over the years to extend the delay length, to improve the consistency of the delay, or to control the sensitivities of the delay are also discussed. This includes the complementary thyristor, the thyristor without the current source, the thyristor with threshold elevation, the thyristor with opposing current source, the single-ended thyristor, and the thyristor-type feedback delay element. Design considerations common to all CMOS thyristors are also discussed to provide insights on topology selection, capacitive loading, and transistor sizing.
Review on Variable and Programmable Gain Amplifiers and Applications
Authors: Santana de Deus Michel , Cavalcanti Catunda Sebastian Yuri , Antunes Soares Antônio Wallace , Rodrigues Belfort Diomadson
Published: May 2022

Variable and programmable gain amplifiers have been a recurrent subject of study over the last 50 years, and, are increasingly used in different applications today. This work presents an overview of these amplifiers as to serve as an up-to-date source of information for studies and designs. Different architectures and techniques are presented and classified for both radio and intermediate frequencies, since there are major differences in the requirements according to bandwidth. Typical applications where VGAs and PGAs are employed are also presented.
Impact of Neonicotinoid Insecticides on the Foraging Activity of Indian Honey Bee, Apiscerana indica (Fab.) in the Cotton Ecosystem
Authors:   Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore-641 003, ChandrasekaR Sowmiya , Marimuthu Murugan ,   Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore-641 003, Saravanan1 Ayyaswami ,   Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore-641 003, Angappan Suganthi ,   Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore-641 003, Kaithamalai Bhuvaneswari ,   Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore-641 003, Mannu Jayakanthan ,   2Department of Plant Molecular Biology and Bioinformatics, Tamil Nadu Agricultural University, Coimbatore-641 003, Natesan Senthil ,   2Department of Plant Molecular Biology and Bioinformatics, Tamil Nadu Agricultural University, Coimbatore-641 003
Published: May 2022

Indian honey bees are the important managed pollinators of several agricultural and horticultural crops in India. At present, bee colony decline is the biggest crisis amongbeekeepers. The use of neonicotinoid insecticides is considered the prime factor, and they were found to cause a direct impact on bees by mortality and indirectly impair the foraging behavior of bees. Hence, the study aimed to assess the impact of neonicotinoids on the foraging activity of Indian honey bees. The neonicotinoids viz., imidacloprid 17.8 SL, clothianidin 50 WDG, thiamethoxam 25 WG, and thiacloprid 21.7 SC, along with organophosphate dimethoate 30 EC (chemical check) and control (no spray) were sprayed at field recommended doses on cotton crop. Foraging activity of the bees,viz.,incoming foragers with nectar and pollen load and outgoing foragers were counted at the hive entrance during the morning (09.00-11.00), afternoon (13.00-15.00), and evening (16.00-18.00) hours of the day. The data were recorded at pre-treatment count and posttreatment count on different day intervals viz., 1DAS, 3DAS, 7DAS, and 15DAS. The mean number of incoming nectar, pollen foragers, and outgoing foragers were recorded to be maximum in control than neonicotinoid-treated plots. Hence, the reduction in foraging activity may lead to areduction in the food storage area and brood area ultimately lesseningthe overall colony growth. It’s always better to avoid spraying cotton crop during the flowering period using neonicotinoids to dodge the residues even though cotton is not a food crop; meanwhile, it will safeguard the pollinators.
Biochar Addition in Flooded Paddy Soil for Ameliorating the Effects of Elevated Carbon dioxide (eCO2)
Authors:   1Department of Agricultural Microbiology, Directorate of Natural Resource Management, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu -641003, India, Thanuja Kalyanasundaram Geetha , Karthikeyan Subburamu ,   1Department of Agricultural Microbiology, Directorate of Natural Resource Management, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu -641003, India, Balachandar Dananjeyan ,   1Department of Agricultural Microbiology, Directorate of Natural Resource Management, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu -641003, India, Marimuthu Subramanian ,   3Department of Nano Science and Technology, Directorate of Natural Resource Management, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu -641003, India, Chandrakumar Kalichamy ,   2Department of Renewable Energy Engineering, Agricultural Engineering College & Research Institute, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu -641003, India
Published: May 2022

Improving soil organic carbon by biochar application is of concern in flooded rice soils. However, the effect of biochar on soil physico-chemical and biological properties under increasing levels of CO2 is limited and needs investigation. The present study examined the response of soil carbon pool, and soil enzyme activities of rice upon application of biochar under elevated carbon dioxide (eCO2) - 55030 μmol.mol−1 level. The study was carried out in open-top chambers (OTC) under a rice-rice (Oryza sativa L.) cropping system in 2020. A set of OTCs at ambient CO2 (415 ± 10 μmol mol−1 (aCO2)) served as a check with and without biochar application. The fourth OTC maintained eCO2 without the application of biochar. Rhizosphere soil samples from three critical crop stages viz., active tillering, flowering, and maturity were analyzed for various physico- chemical and biological properties. Most soil biological parameters, specifically soil enzymes, β – glucosidase, urease, and phosphatases, exhibited significant changes during the flowering stage in biochar applied e(CO2) treatment. The per cent increase of 46.8 %, 30.2 %, 18.75 %, and 51.2 % over ambient CO2 in soil organic carbon (SOC), soil microbial biomass carbon (SMBC), oxidizable carbon (OC), and water-soluble carbon, respectively, was observed. This study emphasized that biochar can improve the soil C pool and enzyme activities under anticipated climate change.
Genetic Characterization of Fall Armyworm (Spodoptera frugiperda, J.E. Smith) Feeding on Pearl Millet (Pennisetum glaucum L.R.Br.) in Tamil Nadu
Authors:   1 Department of Agricultural Entomology, Centre for Plant Protection Studies, Tamil Nadu Agricultural University, Coimbatore – 641003, Tamil Nadu, India, T Sathyan , N Sathiah ,   1 Department of Agricultural Entomology, Centre for Plant Protection Studies, Tamil Nadu Agricultural University, Coimbatore – 641003, Tamil Nadu, India, S Mohankumar ,   Department of Plant Biotechnology, Centre for Plant Molecular Biology and Biotechnology Tamil Nadu Agricultural University, Coimbatore – 641003, Tamil Nadu, India, V Balasubramani ,   Department of Plant Biotechnology, Centre for Plant Molecular Biology and Biotechnology Tamil Nadu Agricultural University, Coimbatore – 641003, Tamil Nadu, India, E Kokiladevi ,   Department of Plant Biotechnology, Centre for Plant Molecular Biology and Biotechnology Tamil Nadu Agricultural University, Coimbatore – 641003, Tamil Nadu, India, R Ravikesavan ,   Department of Millets, Centre for Plant Breeding and Genetics, Tamil Nadu Agricultural University, Coimbatore – 641003, Tamil Nadu, India, T Srinivasan ,   Department of Millets, Centre for Plant Breeding and Genetics, Tamil Nadu Agricultural University, Coimbatore – 641003, Tamil Nadu, India, J S Kennedy ,   School of Post Graduate Studies, Tamil Nadu Agricultural University, Coimbatore – 641003, Tamil Nadu, India
Published: May 2022

In the present study, molecular characterization was carried out at the Department of Plant Biotechnology, Tamil Nadu Agricultural University, Coimbatore to identify the strains of fall armyworm collected from pearl millet crop at four different locations in Tamil Nadu, India. PCR-RFLP profile of mitochondrial COI fragment exhibited the presence of both ‘C’ and ‘R’ strains of FAW. MtCOI region analysis revealed that, thirteen samples showed ‘R’ strain identity, and others assumed ‘C’ strain identity. Sequence analyses of mtCOI region of FAW feeding on pearl millet showed nucleotide variations in 22 positions. The Strain, ON142640 (Pearl millet Vridhachalam India) totally diverged from all populations subjected to phylogenetic analysis in this study and was suspected to be an inter-strain (R/C) hybrid. The per cent identity analysis of S. frugiperda ranged from 99% to 100% with previously deposited sequences in the NCBI-GenBank database
Comparative Toxicity of Aqueous and Methanolic Extracts of Brown Macroalgae against Tobacco Cutworm, Spodoptera litura Fabricius
Authors:   Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore - 641003, N Dharani Priya , S Raguraman ,   Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore - 641003, K Bhuvaneswari ,   Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore - 641003, A Lakshmanan ,   Department of Nano Science and Technology, Tamil Nadu Agricultural University, Coimbatore - 641003, k Chandra Kumar ,   Department of Renewable Energy Engineering, Tamil Nadu Agricultural University, Coimbatore - 641003
Published: May 2022

The present study aimed to find the toxicity of aqueous and methanol extracts of three different brown macroalgae viz., Padina tetrastromatica, Sargassum wightii and Turbinaria conoides against tobacco cutworm, Spodoptera litura. Larval mortality was noticed in both the extracts at all the concentrations tested in a dose-dependent increase after 96 h of exposure with 73.33, 56.66, and 50.00 per cent in aqueous extract; and 50.00, 46.66 and 43.33 per cent in methanol extracts at 10 % concentration in S. wightii, T. conoides and P. tetrastromatica, respectively. Pre-pupal and pupal mortality were recorded in all the concentrations showing malformations during the growth. Pupation and adult emergence were also affected by the extracts of S. wightii. From the results, it is surmised that brown macroalgae possess insecticidal potential and growth inhibitory properties which can be exploited for eco-friendly management of Spodoptera litura and possibly other lepidopteran larvae as well.
An update on the approaches of avoidance of propagation of chronic kidney disease resulting in reversal or possible need or avoidance of kidney transplantation - a systematic review
Authors: Kulvinder Kochar Kaur , Gautam Allahbadia , Mandeep Singh
Published: May 2022

Chronic Kidney Disease (CKD) by definition is a disease characterized by irreversible elimination of renal function, which keeps propagating as corroborated by an estimated glomerular filtration rate (eGFR) of < 60 ml/min/1.73m2, the constant existence of presentation which pointed to Kidney injury (proteinuria, active sediments of urine, histological injury, structural aberrations or prior history with regards to Kidney transplantation) or both that are persistent for greaterthan 3 mths [1].
Pengaruh Penggunaan Sosial Media, Pendidikan Kewirausahaan, Dan Literasi Keuangan Terhadap Perilaku Berwirausaha Online Pada Siswa SMK Negeri 1 Pangkalan Bun
Authors: Cahayaningrum Assha Firsticha , Susanti Susanti
Published: May 2022

This study aims to determine the results of the influence of social media use, entrepreneurship education, and financial literacy on online entrepreneurial behavior. This study used a quantitative study with a population of class XI and XII students in accounting and finance at the SMK Negeri 1 Pangkalan Bun. Sampling using purposive sample with 70 respondents. Data collection techniques using questionnaires and tests. Using descriptive analysis techniques and multiple linear regression analysis with the classical assumption test, namely normality test, multicollinearity test, heteroscedasticity test using SPSS. The results of this study are 1) the use of social media, entrepreneurship education, and financial literacy simultaneously influence online entrepreneurial behavior with Fcount of 29.925 Ftable 2.73 and a significance of 0.000 0.05. 2) The use of social media has a partially positive and significant influence on online entrepreneurial behavior with a significance of 0.001. 3) Entrepreneurship education has a partially positive and significant influence on online entrepreneurial behavior with a significance of 0.000. 4) Financial literacy has a partially positive and significant influence on online entrepreneurial behavior with a significance of 0.002
Pengaruh Kualitas Pelayanan, dan Harga Terhadap Keputusan Pembelian (Studi Kasus Roti Bakar 97)
Authors: Cahya Agus Dwi , Andrian Rizky , Ramadhani Renita Carla , Dwijayanti Erni
Published: May 2022

The purpose of this study is to find out the influence of service quality and price on the decision to purchase UMKM Roti Bakar 97. The variables used in this study were purchase decision variables as dependent variables, while independent variables were the influence of service quality and price. This type of research is descriptive research with quantitative approach. The subject of the study was consumers who had purchased UMKM Roti Bakar 97 products. Primary data was obtained from questionnaires from 58 respondents with purposive sampling. Then the data is analyzed using multiple linear regression analysis. The results of the study on the t test showed that the variable quality of service (X1) had no significant effect on the purchase decision (Y) with a significance value of 0.169 0.05 and a calculated t value of 1,395 t table 2,004; price variable (X2) has no effect on the purchase decision variable (Y) with a significance value of 0.173 0.05 and a calculated t value of 1,381 t table of 2,004. Based on the test results F service quality and price simultaneously influenced the purchase decision indicated by the significance value of 0.00 0.05
Strategi Pemulihan Sektor Pariwisata Dan Ekonomi Kreatif Masa Pandemi Covid-19
Authors: Hermawan Elpa
Published: May 2022

The Covid-19 pandemic has had a major impact on the sustainability of the tourism sector and the creative economy in Indonesia. Tourism activities around the world have also been temporarily suspended. The purpose of this study was to determine the recovery strategy of the tourism sector and the creative economy from the Ministry during the COVID-19 pandemic. The method used is descriptive qualitative. The data is taken from the results of the year-end press conference and webinars from the Creative Economy Marketing Director. Data analysis consisted of data reduction, data presentation and conclusion drawing. The results of the study conclude that several programs launched in the context of restoring the tourism sector and the creative economy are Indonesia Care, Certified CHSE, Grants, and Local Creative Purchases. The Ministry of Tourism and Creative Economy also launched 3 program platforms, namely innovation, adaptation, and collaboration. The implication of this research is to provide an in-depth understanding that the Ministry of Tourism and Creative Economy always has a long-term and short-term orientation in restoring the tourism sector and the creative economy during the pandemic or post-covid-19 pandemic. The various programs launched have involved all parties such as local governments, tourist destination managers, the private sector, or entrepreneurs and business actors in the tourism world.
Experimental investigation on impact energy of friction stir welded aluminum and copper dissimilar joint using full factorial method
Authors: Shinde Gurunath , Arakerimath Rachayya
Published: May 2022

This research work carried out friction stir welding (FSW) of dissimilar aluminum AA3003-H12 and copper C12200-H01, with wide application in the refrigeration and heat exchanger industry. The main aim of this study is to investigate the influence of process parameters, i.e. pin type (PT), weld speed (WS), rotational speed (RPM), and shoulder diameter (SD) on impact energy (IE) of Al-Cu welded joint. The experimental study used the full factorial method with mixed levels of process parameters. Analysis of Variance (ANOVA) determines the significance of process parameters on impact energy. The results of the analysis of variance (ANOVA) shows that rotational speed (RPM) is the most influential process parameter contributing to the impact energy (IE) of dissimilar Al-Cu weld joint. The response optimizer tool in Minitab 18 software gives optimum weld conditions of process parameters for better weld performance. The FSW experiment with a tapered pin, weld speed of 16 mm/min, rotational speed of 1120 rpm, and shoulder diameter of 22.5 mm obtained the maximum impact energy value of 6.5367 J. The fine-grain recrystallization formed intermetallic compounds in the stir zone (SZ). These intermetallic compounds give a maximum microhardness of 382.24 Hv (0.1). The microstructure analysis of the stir zone (SZ) shows an equiaxed grain structure on the Cu side, while the Al side shows a fine recrystallized grain structure.
2019 TÜRKÇE DERSİ ÖĞRETİM PROGRAMINDAKİ KAZANIMLARIN (1, 2, 3 VE 4. SINIFLAR) ANAHTAR YETKİNLİKLERLE İLİŞKİSİ
Authors: ÜLGER Esra , ERKAL Metin
Published: May 2022

Günümüz çağının bilgi çağı olması çağa ayak uyduran, donanımlı bireylerin önemini artırmaktadır. Bu nedenle bireylerin gelişimini desteklemek için “Avrupa Yeterlilikler Çerçevesi” ile uyumlu bir şekilde “Türkiye Yeterlilikler Çerçevesi” oluşturulmuştur. Bu çerçeve kapsamında hayat boyu öğrenmeyi destekleyen sekiz anahtar yetkinlik belirlenerek 2018 yılında öğretim programlarına yansımıştır. Bu çalışma ile ilkokul 1., 2., 3. ve 4. sınıf Türkçe dersi öğretim programı (TDÖP)’nda yer alan kazanımların anahtar yetkinliklerle ilişkisinin incelenmesi amaçlanmıştır. Bu amaç doğrultusunda 1.,2.,3. ve 4. Sınıf Türkçe dersi öğrenme kazanımlarında anahtar yetkinliklerin durumu sınıf ve öğrenme kazanımlarına göre incelenmiştir. Çalışmada, nitel araştırma desenlerinden doküman incelemesi kullanılmış, çalışmanın veri kaynağı olarak 2019 TDÖP belirlenmiştir. Verilerin analizi, betimsel analiz tekniğiyle yapılmıştır. Araştırma bulgularına göre 2019 TDÖP’ün 1, 2, 3 ve 4.sınıf kazanımlarının anahtar yetkinlikler ile uyumlu olduğu ancak dengeli dağılımın olmadığı sonucuna ulaşılmıştır. Öğretim programında en fazla “Öğrenmeyi Öğrenme Yetkinliği” ile ilişkili kazanımlara yer verilirken 1. ve 2. sınıflarda “Yabancı Dillerde İletişim, Dijital Yetkinlik, Kültürel Farkındalık ve İfade, Sosyal Ve Vatandaşlıkla İlgili Yetkinlikler” ile doğrudan ilişkili olan herhangi bir kazanıma yer verilmediği belirlenmiştir. Ayrıca “Anadilde İletişim” yetkinliğinin diğer yetkinliklere göre daha fazla öğrenme kazanımıyla ilişkilendirildiği görülmüştür.
Effect of Parental Perception on the Prevalence of Adolescent Internet Gaming Disorder During the COVID-19 Pandemic
Authors: Lee Soyeon , Yoo Seo-Koo , Son Young Don , Kim Sun Mi , Han Doug Hyun
Published: May 2022

Objective During the coronavirus disease (COVID-19) pandemic, several studies have found that Internet usage and gaming times have increased among adolescents. Parents’ Internet literacy and attitudes toward Internet gaming have been reported to affect children’s Internet gaming disorder (IGD). We hypothesized that parents’ attitudes toward Internet use and gaming would affect the prevalence of IGD among adolescents.Methods A total of 199 mothers of children who played Internet games were surveyed online to gather information regarding their demographic characteristics, children’s Internet use patterns, psychological factors, and Internet gaming literacy.Results Among adolescents, increased Internet usage or gaming time was not associated with IGD, but the presence of attention deficit hyperactivity disorder (ADHD) was. Among parents, anxiety, depression, and family togetherness were not related to IGD, but a positive perception of gaming protected against the development of IGD, whereas a negative perception was a risk factor for IGD.Conclusion Increased gaming time neither causes nor correlates with IGD in adolescents, even though ADHD may be a risk factor for IGD. Parents’ positive or negative perceptions of gaming can be protective or present a risk factor, respectively, for their children’s development of IGD.
The Influence of Physical Distancing, Sense of Belonging, and Resilience of Nursing Students on Their Viral Anxiety During the COVID-19 Era
Authors: Kim Jeong Hye , Seo Min-Sook , Chung Seockhoon
Published: May 2022

Objective We aimed to explore how nursing students’ adherence to physical distancing, sense of belonging, or resilience may be associated with viral anxiety during the coronavirus disease (COVID-19) era in South Korea.Methods We conducted an online survey among nursing students from December 8–10, 2021. The survey gathered participants’ age, sex, grades, living area, and responses to questions on COVID-19. In addition, responses to Stress and Anxiety to Viral Epidemics-6 items (SAVE-6), adherence to physical distancing, Sense of Belonging Instrument, Calling and Vocation Questionnaire, Patient Health Questionnaire-9 items (PHQ-9), and Connor-Davidson Resilience Scale-2 (CD-RISC2) items were gathered.Results The SAVE-6 score was significantly correlated with adherence to physical distancing (r=0.29), PHQ-9 (r=0.26), and CD-RISC2 (r=-0.34, all p<0.01) similar to partial correlation analysis adjusting participants’ group (freshmen and sophomores vs. juniors and seniors). A linear regression analysis revealed that viral anxiety of nursing students was predicted by sex (female, β=0.20, p=0.001), adherence to physical distancing (β=0.25, p<0.001), sense of belonging (β=0.16, p=0.014), and CD-RISC2 score (β=-0.32, p<0.001) (adjusted R2=0.24, F=10.01, p<0.001).Conclusion We observed that adherence to physical distancing, sense of belonging, and their resilience influenced nursing student’s viral anxiety. An appropriate support system to manage viral anxiety is needed for nursing students during the COVID-19 pandemic.
МОДЕЛИРОВАНИЕ ОБРАЗОВАНИЯ НАНОЧАСТИЦ УГЛЕРОДА ПРИ БЫСТРОМ ОХЛАЖДЕНИИ УГЛЕРОДНОГО ГАЗА
Authors:   Национальный исследовательский ядерный университет «МИФИ», ГУБИН С.А. ,   Федеральный исследовательский центр химическойфизики им. Н.Н. Семёнова Российской академии наук, КУДИНОВ А.В. ,   Национальный исследовательский ядерный университет «МИФИ», МАКЛАШОВА И.В. ,   Национальный исследовательский ядерный университет «МИФИ», БОГДАНОВА Ю.А. ,   Национальный исследовательский ядерный университет «МИФИ»
Published: May 2022

На основе квазиравновесного термодинамического и молекулярно-динамического (МД) моделирования рассчитан процесс образования наночастиц углерода при быстром охлаждении углеродного газа, нагретого до высокой температуры при постоянной плотности, за счет конденсации из газовой фазы в конденсированную наноуглеродную фазу. Для этого в термодинамическом расчете учтена повышенная энтальпия образования для наночастиц углерода. По результатам МД расчета рекомендованы три параметризации реакционно-силовых полей (ReaxFF-CHO, ReaxFF-c2013 и ReaxFF-PAH) для МД моделирования образования наноуглеродных частиц.
ВЛИЯНИЕ ДОБАВОК МЕТАНА, БЕНЗОЛА И РАДИКАЛОВ СН3, СН2 И СН НА ПРОЦЕСС ОБРАЗОВАНИЯ ЧАСТИЦ САЖИ ПРИ ПИРОЛИЗЕ СИЛЬНО РАЗБАВЛЕННЫХ СМЕСЕЙ АЦЕТИЛЕНА С АРГОНОМ
Authors:   Федеральный исследовательский центр химической физики им. Н.Н. Семёнова Российской академии наук, ВЛАСОВ П.А. ,   Национальный исследовательский ядерный университет «МИФИ», СМИРНОВ В.Н. ,   Федеральный исследовательский центр химической физики им. Н.Н. Семёнова Российской академии наук, АХУНЬЯНОВ А.Р. ,   Федеральный исследовательский центр химической физики им. Н.Н. Семёнова Российской академии наук, АГАФОНОВ Г.Л. ,   Федеральный исследовательский центр химической физики им. Н.Н. Семёнова Российской академии наук, БУЗИЛЛО Э. ,   РГУ нефти и газа им. И.М. Губкина
Published: May 2022

Рассмотрено влияние добавок метана, бензола и радикалов СНз, СН2 и СН на процесс образования частиц сажи при пиролизе сильно разбавленных смесей ацетилена с аргоном. Проведено прямое сравнение результатов детальных кинетических расчетов образования частиц сажи при пиролизе смесей ацетилена, бензола и метана с аргоном по единой кинетической модели сажеобразования с результатами собственных экспериментов авторов на ударной трубе в отраженных ударных волнах. Полученное хорошее согласие результатов кинетических расчетов с результатами экспериментов явилось основанием для проведения численных экспериментов для очень сильно разбавленных смесей и повышенных давлений, что позволило сохранить концентрацию атомов углерода в исследуемой смеси и свести к минимуму изменение температуры в процессе пиролиза исследуемой смеси и образования конденсированной дисперсной фазы.
ЭКСПЕРИМЕНТАЛЬНОЕ ИССЛЕДОВАНИЕ ОКИСЛИТЕЛЬНОГО КРЕКИНГА ЭТАН-ЭТИЛЕНОВЫХ СМЕСЕЙ ПРИ ДАВЛЕНИЯХ 1-3 АТМ
Authors:   Институт проблем химической физики Российской академии наук, ОЗЕРСКИЙ А.В. ,   Федеральный исследовательский центр химической физики им. Н.Н. Семёнова Российской академии наук, СТАРОСТИН А.Д. ,   Московский государственный университет имени М.В. Ломоносова, НИКИТИН А.В. ,   Институт проблем химической физики Российской академии наук,   Федеральный исследовательский центр химической физики им. Н.Н. Семёнова Российской академии наук, АРУТЮНОВ В.С. ,   Институт проблем химической физики Российской академии наук,   Федеральный исследовательский центр химической физики им. Н.Н. Семёнова Российской академии наук,   Московский государственный университет имени М.В. Ломоносова
Published: May 2022

Актуальной задачей газохимии является переработка нефтезаводских газов (НЗГ), представляющих собой непостоянные композиции, состав которых может существенно варьироваться на различных нефтеперерабатывающих предприятиях. Работа посвящена развитию научных основ нового способа переработки НЗГ, первой стадией которого является окислительный крекинг углеводородов С+, входящих в состав НЗГ, в ценные продукты с высокой добавленной стоимостью. В проточном кварцевом реакторе проведены экспериментальные исследования окислительного крекинга этана и его смесей этиленом. Эксперименты проводились при давлениях 1-3 атм, температурах от 500 до 750 °С, времени реакции 2 с, начальном соотношении С/О в диапазоне 2,3-2,5 (а = 0,115-0,124) в смесях, разбавленных азотом. Показаны различия в реакционной способности этана и этилена на окислительных стадиях процесса для этих условий.
ФОРСАЖНАЯ КАМЕРА С ДЕТОНАЦИОННЫМ ГОРЕНИЕМ КЕРОСИНА
Authors:   Федеральный исследовательский центр химической физики им. Н. Н. Семёнова Российской академии наук, ФРОЛОВ С.М. , ИВАНОВ В.С. ,   Федеральный исследовательский центр химической физики им. Н. Н. Семёнова Российской академии наук, ШАМШИН И.О. ,   Федеральный исследовательский центр химической физики им. Н. Н. Семёнова Российской академии наук, АКСЁНОВ В.С. ,   Федеральный исследовательский центр химической физики им. Н. Н. Семёнова Российской академии наук, ВОВК М.Ю. ,   ПАО «ОДК-УМПО», филиал ОКБ им. А. Люльки, МОКРЫНСКИЙ И.В. ,   ПАО «ОДК-УМПО», филиал ОКБ им. А. Люльки, БРУСКОВ В.А. ,   Войсковая часть 15650-16, ИГОНЬКИН Д.В. ,   Войсковая часть 15650-16, МОСКВИТИН С.Н. ,   Войсковая часть 15650-16, ИЛЛАРИОНОВ А.А. ,   Войсковая часть 15650-16, МАРЧУКОВ Е.Ю. ,   Московский авиационный институт (национальный исследовательский университет)
Published: May 2022

Представлены результаты новой серии огневых стендовых испытаний детонационной форсажной камеры сгорания (ДФКС) в составе турбореактивного двигателя (ТРД). В отличие от предыдущих испытаний с последовательным расположением ТРД и ДФКС в новой серии предусмотрено газодинамическое разделение воздушных потоков: воздух в ДФКС подавался раздельно с помощью вспомогательной силовой установки. Разделение воздушных потоков позволило обеспечить устойчивую работу комбинированной силовой установки при включении ДФКС на разных режимах работы ТРД. В испытаниях зарегистрирован устойчивый режим непрерывно-детонационного спинового горения авиационного керосина с одной детонационной волной, причем детонационное горение керосина в ДФКС не влияло на работу ТРД.
УСОВЕРШЕНСТВОВАННАЯ МОДЕЛЬ ОПТИЧЕСКОГО КАПСЮЛЯ-ДЕТОНАТОРА
Authors:   ФГБОУ ВО РХТУ им. Д. И. Менделеева, АВАТИНЯН Г.А. , ВАРЛАМОВ Е.С. ,   ФГБОУ ВО РХТУ им. Д. И. Менделеева, КОЛЕСОВ В.И. ,   ФГБОУ ВО РХТУ им. Д. И. Менделеева, КОРНЕЕВ О.С. ,   ФГБОУ ВО РХТУ им. Д. И. Менделеева
Published: May 2022

Создана усовершенствованная модель оптического капсюля-детонатора (ОКД) на основе штатного капсюля-детонатора № 8 с улучшенной оптоволоконной системой ввода излучения, инициируемая непрерывным инфракрасным (ИК) лазером с длиной волны А = 975 нм. Исследованы фоточув-ствительные составы на основе инициирующих взрывчатых веществ (ИВВ) - азида свинца (АС), диазодинитрофенола, быстрогорящего комплексного соединения - бис(этилендиамин)-медь(II)-иерхлорат (БЭДМП) и бризантного взрывчатого вещества (БВВ) СЬ-20 с добавлением 0,5% фотопоглощающих нанодисперсных порошков алюминия, оксида меди и графита. В ходе работы определены расстояния перехода горения в детонацию (ПГД) и времена задержки детонации при мощности лазерного излучения 3,3 Вт.
КАЛОРИМЕТРИЧЕСКОЕ ИЗМЕРЕНИЕ ТЕПЛОТЫ СГОРАНИЯ КОМПОЗИТНЫХ МАТЕРИАЛОВ, ПИРОТЕХНИЧЕСКИХ СОСТАВОВ, ПРОМЫШЛЕННЫХ И БЫТОВЫХ ОТХОДОВ
Authors:   Федеральный исследовательский центр химической физики им. Н. Н. Семёнова Российской академии наук, ИНОЗЕМЦЕВ А.В. , ИНОЗЕМЦЕВ Я.О. ,   Федеральный исследовательский центр химической физики им. Н. Н. Семёнова Российской академии наук, МАТЮШИН Ю.Н. ,   Федеральный исследовательский центр химической физики им. Н. Н. Семёнова Российской академии наук, ВОРОБЬЁВ А.Б. ,   Федеральный исследовательский центр химической физики им. Н. Н. Семёнова Российской академии наук
Published: May 2022

Качество пиротехнических изделий контролируется на основании калориметрических измерений их теплот сгорания в калориметрической бомбе. Точность калориметрических данных по теплотам сгорания веществ определяется, в значительной мере, относительным методом измерения - совпадением условий калибровочного опыта по эталонной бензойной кислоте и рабочего измерения. Документы регламентируют измерение теплот сгорания составов на бомбовых калориметрах, определяют схемы размещения эталонной бензойной кислоты и испытуемых образцов, а также режим и схему испытаний. Недостатком является нарушение условий относительности метода испытаний - не учитывается необходимость наступления регулярного теплового режима в опыте. Показано, что продолжительность измерений образцов превышает время калибровочных опытов за счет длительности остывания большого количества твердых конечных продуктов реакции, что, в итоге, влияет на корректность полученных результатов. На имитаторах экспериментально показано влияние длительности главного периода опыта на процесс теплопередачи. Определена величина погрешности результата измерения от процесса теплопередачи в бомбе, связанная с продолжительностью главного периода опыта. Предложен способ проведения опыта с увеличенной теплоотдачей продуктов сгорания и минимальной длительностью. Рекомендовано проведение технического совершенствования калориметрических испытаний.
Identifikasi Kemampuan Siswa SMP dalam Berargumentasi Melalui Pendekatan Pembelajaran Science, Technology, Engineering, and Mathematics (STEM)
Authors: Hasanah Firdatul , Putra Pramudya Dwi Aristya , Rusdianto
Published: May 2022

Penelitian ini bertujuan untuk mengidentifikasi kemampuan siswa dalam berargumentasi dan kemampuan siswa dalam menyajikan data untuk menunjang argumentasi yang dilihat dari kesesuain jawaban dengan materi. Penelitian ini menggunakan penelitian kualitatif dengan pendekatan studi kasus. Penelitian ini dilakukan sebanyak 2 kali pertemuan dengan partisipan 12 orang siswa kelas VIII SMP Negeri 1 Bondowoso. Data diperoleh dari hasil observasi, wawancara, dan dokumentasi berupa video dan rekaman suara. Hasil penelitian menunjukkan dari tiga indikator kemampuan berargumentasi yaitu claim, evidence, dan reasoning, siswa paling lemah dalam memberikan reasoning. Siswa juga belum sepenuhnya mampu menyesuaikan jawaban dengan materi yang dipelajari. Jawaban yang diberikan hanya berdasarkan asumsi pribadi tanpa disertai teori pendukung yang berkaitan dengan materi. Simpulan dari penelitian ini bahwa kemampuan siswa dalam berargumentasi masih tergolong rendah.
Investigation of characteristics of interferogram visibility in three-mirror laser interferometric rangefinder
Authors:   Moscow Institute of Physics and Technology, Institutskiy per. 9, Dolgoprudny, Moscow Region, Russia, 141701, Bulatov I.S. , Korobov N.A. ,   Moscow Institute of Physics and Technology, Institutskiy per. 9, Dolgoprudny, Moscow Region, Russia, 141701, Aleksandrov D.V. ,   Fryazino Branch of Kotelnikov Institute of Radio-Engineering and Electronics of RAS, Vvedenskiy sq. 1, Fryazino, Moscow Region, Russia, 141190, Dubrov M.N. ,   Moscow Institute of Physics and Technology, Institutskiy per. 9, Dolgoprudny, Moscow Region, Russia, 141701,   Fryazino Branch of Kotelnikov Institute of Radio-Engineering and Electronics of RAS, Vvedenskiy sq. 1, Fryazino, Moscow Region, Russia, 141190
Published: May 2022

Precision radio-optical methods for measuring large lengths and distances with interference accuracy are studied. The relations of the visibility of the interference pattern on the change in the length of the laser resonator are experimentally obtained and analyzed. The visibility relations from various values of the length of the measuring arm of a three-mirror interferometer are considered. These relations contain especial points, which are characterized by the ratio between the length of the laser resonator and the specified measured distance. The obtained relations are needed for optimal tuning of the laser frequency when implementing high-precision methods for measuring length and displacements. It is shown that by means of a three-mirror laser interferometer rangefinder operating in the regime of the two optical mode generation, the interference accuracy of measuring the length and small displacements at distances up to 100 km can be achieved.
SOFTWARE AND HARDWARE AUTOMATED CONTROL COMPLEX FOR THE FORMATION OF A CRACKED LAYER ON SEMICONDUCTOR PLATES
Authors:   Kremenchuk Mykhailo Ostrohradskyi National University, Pritchin Sergey , Bobryshev Alexey ,   Kremenchuk Mykhailo Ostrohradskyi National University, Sorokun Aleksandr ,   Kremenchuk Mykhailo Ostrohradskyi National University, Zhumatii Tymur ,   Kremenchuk Mykhailo Ostrohradskyi National University
Published: May 2022

Purpose. Porous silicon is widely used in devices such as light emitters, sensors, and medical devices. The quality of operation of these devices depends on the diameter of the pore, the uniformity of its surface, and the thickness of the layer. To control the characteristics of the porous layer, the current density, etching time, and current shape are changed. As a rule, the growth is carried out using a constant current density. In this case, hydrogen bubbles are formed in the pores with a simultaneous decrease in the etching rate, which leads to the formation of small pores. This limits the pos-sibility of obtaining porous silicon with a high degree of reproducibility. Methodology The research was carried out on a semiconductor wafer. After cleaning, the silicon wafers were etched in an electrochemical cell at room temperature. For the study, two types of etching current were used: current in the form of rectangular pulses with a variable duty cycle and direct current. For the pulsed current, the density was 20 mA/cm2, the duty cycle of the pulses varied from 40 to 80% at a frequency of 7 Hz. For direct current, the etching current density was 20 mA/cm2. The etching time in both experiments was 30 minutes. Findings. The paper shows the influence of the shape of the silicon etching current on the formation of a porous layer. To control the etching process, a hardware-software automated complex for controlling the formation of a porous layer on semiconductor wafers was developed. Originality. When using a pulsed current, the structure of the porous layer becomes more uniform, as evidenced by an increase in the intensity of the photolumines-cence spectrum at a wavelength of 650 nm. Practical value. The results of the work can be used in the development of such devices as light emitters, sensors and medical devices. Сonclusions The method of etching single-crystal silicon has been improved in order to obtain a porous layer having a uniform structure by using the etching current in the form of pulses with a duty cycle of 80% and a frequency of 7 Hz.
RESEARCH AND TRANSFORMING STAGE OF PHYSICAL AND HEALTH COMPETENCES DEVELOPMENT FOR FUTURE PILOTS
Authors:   Flight Academy of National Aviation University, Piven Mykola
Published: May 2022

Purpose.The purpose of this article is to consider the features of competence-oriented physical and psychophysio-logical training organization for future pilots and to reveal the essence of the search and transformation stage of phys-ical and health competencies development. Methodology. Interpretation of the search-transforming stage in the self-development of physical and health competencies involves consideration of this didactic phenomenon in the context of its autodidactic component. Since competence-oriented Physical and Psychophysiological Training is a creative way of forming physical and health competencies, it can be considered a technology of transferring educational activi-ties to the mode of personal development, when the cadet becomes a subject of educational activity and integration of psychological and pedagogical knowledge to solve the outlined tasks. Results. Competence-oriented physical and psychophysiological training in the course of constructive activity passes from disparate processes and systems to a holistic formation with synergetic unity and certainty of structural elements. The ability to understand the educational activities in the discipline of Physical and Psychophysiological Training as a constructive and transformative force motivates the cadet to physical activity, which is correlated with his physical culture and health competencies and the purpose of professional education. Originality. Interest in the phenomenon of «psychophysiological reliability» as a didactic construct of quality professional education is explained by the development of problems in psychological readiness of future pilots for flight activities. A new impetus to the modernization of professional education in modern conditions is the introduction of a competency approach as a methodological basis that will realize the fullness of in-tegration facilities in the flight training with developed professional and personal competencies. That is why the prob-lem of professional reliability development for future pilots in the context of the competency approach today reaches the level of priorities in the aviation industry and higher education, in particular. Practical value. The content, structure and logic of competency-oriented Physical and Psychophysiological Training and its component «Search and Transformation Stage» implementation allow access to internal psychological and physiological resources of future pilots for effective development of psychophysiological reliability and psychological readiness for the flight profes-sion; to inner world in such a way that personal contradictions and meanings in physical activity become the driving force for professional and personal self-development.