bluuebunny/crossref_metadata_2025 huggingface dataset:
Hydrochemical Characteristics of Groundwater at the Epicenter of the 2021 Biru M6.1 Earthquake in Central Tibet
Authors: Yang Pengtao , Sun Xiaolong , Liu Dongying , He Zhongtai , Li Yongsheng
Published: November 2021

Groundwater is undoubtedly important for water security and eco-environmental protection, especially in areas that experience earthquakes. Analyzing the characteristics and variation of groundwater after an earthquake is significant to obtain a better understanding of the seismic risk and rational management of groundwater resources. This study investigated the hydrogeochemical characteristics of groundwater at the epicenter of the 2021 Biru M6.1 earthquake in central Tibet, southwest China, using 23 water samples. The results showed that: (1) the hydrochemical type, hydrogen and oxygen isotope ratios, and SiO2 concentrations of three hot spring water samples in the study area were significantly different from those of samples taken elsewhere, indicating that the hot spring water originates from deeper geothermal reservoirs and has undergone more distant migration and longer fractionation processes; (2) the geochemical characteristics of groundwater from some sampling sites in the epicentral area were apparently distinct from those of other shallow groundwater or surface water samples, suggesting that the groundwater environment in the epicentral area has been affected by the earthquake. Along with the macroscopic groundwater responses in the epicentral area after the earthquake, we investigated the influencing mechanisms of the earthquake on the regional groundwater environment. We conclude that a shorter distance from the epicenter to the seismogenic fault leads to a greater possibility of the generation of new fractures, which then induce macroscopic responses and chemical characteristic variations for groundwater.
I-SA Algorithm Based Optimization Design and Mode-Switching Strategy for a Novel 3-Axis-Simpson Dual-Motor Coupling Drive System of PEV
Authors: Cheng Zhun
Published: November 2021

Pure electric vehicle (PEV) equipped with a dual-motor coupling drive system can make full use of the high efficiency working range of the motor in order to improve vehicle efficiency. In order to further expand the application range of the system and to improve its practical application, this paper designs and proposes a new dynamic coupling drive system of three axis-double working modes, which is based on the Simpson planetary gear train. The new system adopts two planetary gears (P1 and P2), and the two sun gears of double rows, planetary carrier of P1 and gear ring of P2 are bunded. The power output of the P1 gear ring (mode 1) and P2 planetary carrier (mode 2) is realized by a controlling wet clutch. This paper adopts the linear interpolation method, least square method and 5-fold CV cross validation method to establish the full load speed characteristics and efficiency characteristics models of two motors (13 and 30 kW). This paper proposes an optimization design method based on an improved simulated annealing (I-SA) algorithm for new system parameter matching and working mode switching strategy determination. The results show that the modeling accuracy of the two motors is high, and the mean value of MAPE is 4.337%. The proposed optimization design method achieves the demand goal of PEV effectively. The I-SA algorithm has good effectiveness and fast convergence, the mean efficiency of the optimized PEV is 83.91% under all working conditions, the maximum speed is 142.56 km/h and the power utilization rate of the dual-motor is 100%. This study proposes a new hardware system and a design optimization method on software and provides a direct reference for the research of PEV drive systems by combining hardware with software.
Clinical and laboratory rationale for the effectiveness of transcranial electrostimulation in the treatment of chronic generalized periodontitis in elderly patients
Authors: Kraynov S. V. , Popova A. N. , Firsova I. V. , Myasoedova K. A. , Alekhanova I. F. , Vasenev E. E.
Published: November 2021

Relevance. Immunomodulation is becoming increasingly relevant in geriatric dentistry. The administration of this therapy cannot be empirical and requires the study of the corresponding immunological parameters. The study of the gingival crevicular fluid composition allows evaluating not only the immune system ageing processes and their influence on the periodontitis course but the effectiveness of the treatment. The study aimed to evaluate the effectiveness of transcranial electrostimulation (TES) for the treatment of periodontitis in elderly patients and to prove the value of gingival crevicular fluid laboratory testing during immunomodulatory therapy. Materials and methods. We conducted a clinical, prospective, controlled, randomized, unblinded, comparative study. We examined two groups of periodontal patients (68 subjects), aged 60-74, and equally treated them. But the patients in the second group additionally received transcranial electrostimulation (TES). The research included the follow-up assessment of IL-1β, TNF-α, IL-10, sIgA and LDH in the crevicular fluid and periodontal index reduction: SBI and PMA (%), before the treatment and on the 7th, 14th, 21st and 30th day.Results. The study established that the periodontal treatment scheme, which includes TES (immunomodulation), is more clinically effective than conventional treatment. There were statistically significant differences in the clinical and laboratory parameters between the 1st and the 2nd patient groups after the 14th day (p < 0,05). On the 30th day of observation, the described trend persisted: the parameters of crevicular fluid in both groups continued to decrease. Moreover, their mean values were significantly lower in the 2nd group than in the 1st. The level of IL-1β (pg/ml) was 16.9 ± 0.33 and 18.8 ± 0.38;TNF-α (pg/ml): 11.9 ± 0.37 and 14.4 ± 0.4; IL-10 (pg/ml): 11.0 ± 0.35 and 12.9 ± 0.36, respectively (p < 0.05).Conclusion. In elderly patients, TES (as a part of a comprehensive treatment) is more effective clinically than the conventional periodontal treatment alone. In geriatric dentistry, it is of primary importance to test gingival crevicular fluid composition and properties in a laboratory and to select the most significant immunological and biochemical components: IL-1β, TNF-α, IL-10, sIgA, LDH. It allows a periodontist to confirm the changes in the manifestations of periodontitis in the elderly patients and to verify the clinical effectiveness of immunomodulation.
Investigating the impact of coffee consumption and cigarette smoking in the oral cavity and periodontal tissues
Authors: Petrov A. A.
Published: November 2021

Relevance. Modern studies demonstrate that the combination of smoking and coffee drinking adversely affects the whole body, not only the oral mucosa. The study aimed to investigate the impact of coffee consumption and smoking in the oral mucosa and periodontal tissues.Materials and methods. We examined 60 dental patients, mean age of 22.1 ± 0.3 years old. The first group included nonsmoking coffee drinkers, the second – non-coffee-drinkers-smokers, the third – smokers- coffee-drinkers. In all patients, we determined hygiene and periodontal indices: PMA (papillary-marginal-attached) index Parma, Muhlemann sulcus bleeding index (SBI) modified by Cowell, simplified Green-Vermillion Oral Hygiene Index (OHI-s). The study examined microcirculation in periodontal tissues using Doppler ultrasound. We took patients’ blood pressure and heart rate to study salivary flow rate, pH and viscosity according to the Redinova-Pozdeev technique.Results. The combination of coffee consumption and smoking affects the dynamics of the blood flow (BP, HR). The study of periodontal tissue blood supply revealed a significant increase in microcirculation in non-smoking coffee drinkers. Smoking negatively affected periodontal blood supply, namely periodontal circulation decreased, while general circulation parameters increased after smoking. In all studied groups, salivary flow rate increased, and saliva pH and viscosity decreased. The third group exhibited the most significant changes in these parameters.Conclusion. Combined coffee consumption and smoking deter periodontal microcirculation, cause significant adverse changes in the oral fluid, and may take their toll on dental health.
Studi FTIR dari Karakterisasi Ampas Bengkuang
Authors: Nidafauziah Ayu , Gemasih M.Iqbal Saputra , Nizar Umar Kalmar , Etika Sri Benti , Kurniawati Desy
Published: November 2021

Penelitian ini bertujuan sebagai pengelolahan limbah organik sebagai sumber karbon. Karbon merupakan suatu material yang diproduksi dengan memanfaatkan limbah organik sehingga bermanfaat dan bernilai ekonomis. Limbah organik merupakan limbah padat yang masih dapat diolah untuk menjadi material yang bermanfaat dan bernilai ekonomis. Pada penelitian ini, karbon telah disintesis dari limbah ampas bengkuang dengan metoda kalsinasi. Proses karbonisasi dilakukan pada suhu dekomposisi termal ampas bengkuang menggunakan TGA dan karbon yang dihasilkan dikarakterisasi dengan FTIR dan mengggunakan perhitungan luas are pita vibrasi C=C dan C-O. Berdasarkan spektra FTIR, karbon yang dihasilkan dari kalsinasi ampas bengkuang pada variasi waktu dekomposisi termalnya masih mengandung komponen organik seperti yang ditunjukan oleh pita-pita serapan spektra FTIR. Hasil difraktogram menunjukan bahwa adanya vibrasi  dari C=C dan C-O dari COOH pada bilangan gelombang 1300-1100 cm-1 yang menunjukkan adanya ikatan glikosida dalam pati. Pita serapan 1600-1500 cm-1 adalah vibrasi dari C=C aromatis yang menandakan keberadaan struktur cincin aromatik pada struktur karbon poliaromatik karbon ampas bengkuang hasil kalsinasi. Adanya puncak-puncak tersebut menandakan bahwa telah terjadinya pembakaran tidak sempurna yang menghasilkan carbon incomplit.
НАВЧАЛЬНА РОБОТА З ОБДАРОВАНИМИ ДІТЬМИ В ПОЧАТКОВІЙ ШКОЛІ В КНР (НА ПРИКЛАДІ КОМУНІКАТИВНО ОБДАРОВАНИХ ДІТЕЙ)
Authors: Чен Пен
Published: November 2021

Китайська педагогічна наука завжди мала досить складні стосунки з поняттям «обдарованість» як соціальною та освітньою реальністю, оскільки ознакою обдарованості людини у традиційній китайській педагогіці вважався соціальний успіх людини (обре матеріальне становище, соціальний та професійний попит, максимальна відповідність соціальному ідеалу суспільства). Онлайн-освіта завжди вважається допоміжною формою освіти в Китаї або варіантом освітньої послуги, діяльність якої спрямована на особливі категорії дітей (важкодоступні діти, діти з особливими фізичними та освітніми потребами, ті, хто опинився у складній життєвій ситуації: ув’язнені, у лікарні тощо). Однак ситуація з пандемією 2020 року поставила увесь світ та Китай, зокрема, перед необхідністю переглянути погляди щодо місця дистанційної освіти. Вся педагогічна та освітня робота у світі була переміщена в Інтернет і робота з обдарованими дітьми не стала винятком. Стаття має на меті представити китайський досвід роботи з обдарованими дітьми (особливо з комунікативно обдарованими) в Інтернеті за допомогою спеціальних освітніх платформ та програм. Для написання статті було використано комплекс теоретичних і емпіричних методів дослідження (метод абстракції, аналіз педагогічної літератури, індукція та дедукція, спостереження тощо).
Дослідження проводиться в рамках програми «Порівняльне дослідження професійного розвитку вчителів початкових класів у Китаї та Південній Кореї» (реєстраційний номер ZKNUC2017038)
ОСОБЛИВОСТІ ФУНКЦІОНУВАННЯ ФРАЗЕОЛОГІЗМІВ З НАЗВАМИ ДИКИХ ПТАХІВ У СУЧАСНІЙ УКРАЇНСЬКІЙ МОВІ
Authors: Шуленок О. С.
Published: November 2021

Статтю присвячено дослідженню особливостей функціонування фразеологізмів з компонентом-орнітономеном у сучасній українській мові. Об’єкт фразеології розглянуто в широкому розумінні – до цього проміжного рівня відносимо як ідіоми, так і прислів’я, приказки, усталені образні порівняння тощо. Проаналізовано назви диких птахів, що входять до складу фразеологічних одиниць із наданням їм особливої маркованості. Визначено національно-культурну специфіку орнітономенів, установлено частоту їх уживання в зазначених мовних одиницях.
ТЕОРЕТИЧНІ ЗАСАДИ ВИВЧЕННЯ ПИТАЛЬНИХ РЕЧЕНЬ У КОНТЕКСТІ ПРОФЕСІЙНОЇ ДІЯЛЬНОСТІ
Authors: Кривенко С. М.
Published: November 2021

У статті презентовано вивчення питальних речень у професійній діяльності, окреслено їхню роль як одного з важливих компонентів фахової успішності. Розглянуто функційно-семантичні особливості питальних речень, їхню специфіку як засобу професійної комунікації. Визначено ті питальні конструкції, що є найчастотнішими в різних типах дискурсу, зокрема медичному, публіцистичному, юридичному, військовому. Запропоновано класифікацією питальних речень, яка сприятиме ширшому витлумаченню комунікативних характеристик питальних речень у вимірах професійного мовлення.
СИНОНІМІЧНІ МОНОПРЕДИКАТИВНІ ВИСЛОВЛЕННЯ ЗІ СПЕЦИФІКАТИВНИМ РОЗШИРЕННЯМ ПЕРВИННОЇ СТРУКТУРИ (НА МАТЕРІАЛІ ФРАНЦУЗЬКОЇ ХУДОЖНЬОЇ ПРОЗИ XX - ПОЧАТКУ XXI СТОЛІТЬ)
Authors: Лепетюха А. В.
Published: November 2021

У статті виявлено структурні типи й семантичні особливості специфікативно розширених монопредикативних висловлень із синтаксичною синонімією французької художньої прози ХХ – початку ХХІ століть; зворотно (мовлення → мова) реконструйовано первинну синтагму / пропозицію актуалізованої преференціальної опції; обґрунтовано ко(н)текстуальну пертинентність досліджуваних типів висловлень, що реалізуються залежно від певної комунікативної інтенції автора полегшити або ускладнити інтерпретацію повідомлення адресатові або його ідіостильових особливостей.
МЕТАФОРИЗАЦІЯ ПОНЯТТЯ «ХАОС» У ПОЕЗІЇ Ф.І. ТЮТЧЕВА
Authors: Камєнєва І. А.
Published: November 2021

У статті розглянуто особливості мовної репрезентації поняття “хаос” у поезії Ф .І. Тютчева. Актуальність дослідження зумовлена важливістю дослідження мови поезії Ф. І. Тютчева, семантики філософського поняття “хаос”, що в поетичному тексті набуває нових значень і відбиває особливості творчості поета. Мета роботи – виявити й описати засоби лексичної репрезентації поняття “хаос”. Основне завдання – дослідити вербалізацію поняття “хаос” на рівні текстових асоціатів. У результаті аналізу з’ясовано, що в метафоризації поняття “хаос” задіяно асоціативні ознаки, які його актуалізують і відбивають взаємозв’язок з іншими поняттями в поетичних текстах.
СЕМАНТИКО-ГРАМАТИЧНЕ НАПОВНЕННЯ ПОВТОРІВ В ІДІОСТИЛІ ІВАНА БАГРЯНОГО (на матеріалі роману «Людина біжить над прірвою»)
Authors: Олексенко О. А. , Гусенко К. В.
Published: November 2021

Стаття присвячена аналізу синтаксичних повторів, їхньої ролі в структурно-смисловій організації художніх творів Івана Багряного, зокрема роману «Людина біжить над прірвою». У науковому дослідженні виокремлено основні засоби експресивного синтаксису, що ґрунтуються на повторі тих чи тих мовних одиниць; визначено особливості граматичного вираження різних стилістичних фігур повтору, простежено їхнє стилістичне й смислове навантаження в художньому тексті. Різноманітні за структурою, граматичним та лексико-семантичним наповненням, повторювані конструкції сприяють художньому моделюванню внутрішнього світу героїв роману, увиразнюють авторську оповідь та слугують потужним засобом емоційного впливу на читача.
ІМПЕРАТИВ У ПОЕТИЧНОМУ МОВЛЕННІ МИКОЛИ ВІНГРАНОВСЬКОГО
Authors: Омельченко А. Г.
Published: November 2021

У роботі окреслено основні теоретичні аспекти дослідження поняття “імператив”, означено диференційні ознаки імператива, розглянуто наявні в сучасному лінгвістичному дискурсі класифікації імперативних конструкцій, типи й специфіку каузації, статус у сучасній поетиці. Здійснено спробу класифікації значень імператива в поетичному мовленні Миколи Вінграновського з урахуванням специфіки відношення ‘мовець – слухач’. Установлено, що в його ліриці виокремлюється низка особливих формулювань і вживань імператива, серед яких переважають фактитивні каузації і мольба, що створюють ефект зацікавлення слухача у звершенні певної дії. Водночас мовець не позиціонує себе вище за співрозмовника й створює тісний комунікативний зв’язок між ними.
ЖИТТЄДАЙНІ СТРУМЕНІ ПОЕЗІЇ ВОЛОДИМИРА КАЛАШНИКА
Authors: Степаненко М. І.
Published: November 2021

Світ поезії водночас реальний і міфічний, відкритий та загадковий, розлогий і щільний. Чи тісно в ньому Майстрові? Буває завузько, буває й занадмір просторо. Тому Митцеві, хто з Божою іскрою, сусідство ніколи не стоїть на заваді, бо він упевнено прямує власною стезею, оглядаючись довкруги, запримічаючи все добре й відштовхуючи все лихе, він веде за собою інших, прокладаючи їм дорогу до краси, яка рятує нас, до світла, що виблискує на видноколі й манить до себе, до високої духовності, яка очищає від скверни душу й тіло. А чи легко Майстрові? Ой ні, бо ж він в одвіті не лишень за себе, а й за всіх нас, навіть за те, що чиниться довкіл. До його посилів дослухаються, у них шукають істину, порятунок, наснагу, жагу до життя. Ті посили мають вигравати різними гранями, будити думку й почуття, уселяти віру та готувати до випробувань, ніжно голубити й крицево гартувати. Вони повинні вабити, охороняти, давати мудрі відповіді на запитання про огорнене таємничостями минуле, суперечливе сьогодення, вимріяне прийдешнє. Покликання й обов’язок справжнього Майстра-Митця – мати під собою земну твердінь і підпирати мужніми раменами свій духовний небосхил.
Avaliação higiênico-sanitária das unidades de alimentação das escolas públicas no Brasil: uma revisão sistemática da produção científica brasileira após a promulgação da RDC 216/2004 Anvisa
Authors: M. Rodrigues de Araújo Érica , Campos Mesquita Patrícia
Published: November 2021

Avaliação higiênico-sanitária das unidades de alimentação das escolas públicas no Brasil: uma revisão sistemática da produção científica brasileira após a promulgação da RDC 216/2004 Anvisa
Studying Moscow urban heat island using satellite images and mesoscale climatic modelling
Authors: Varentsov Mikhail , Grischenko Mikhail , Mikhaylyukova Polina
Published: November 2021

Using the example of the Moscow region, a detailed comparison of the thermal regime of a highly urbanized territory was carried out according to in-situ data and different-scale satellite images. For the summer season, fundamental differences in the characteristics of the spatial variability of LST and air temperature in the daytime are revealed. It is shown that the relationship between the fields of these quantities is practically absent, primarily for urbanized territories, for which the effect of the heat island in the LST field is pronounced, and is practically not expressed in the air temperature field. However, for the winter season, some cases were identified with a more pronounced relationship between these values. The results obtained are independently confirmed by the results of numerical experiments with the COSMO model and the TERRA_URB parameterization with a 1 km grid step. At the same time, the prospects of using high spatial resolution images for model verification are shown: they made it possible to draw conclusions about the choice of the optimal configuration of model settings. For both summer and winter seasons, a comparison was made of high spatial resolution satellite data from Landsat with low spatial resolution data from MODIS. It is shown that, in spite of the generally good agreement between the two types of data, in some cases there are significant discrepancies between them due to differences in the values of the emissivity used and other factors that require more detailed analysis in further studies.
Protected species of vascular plants in Khibiny montains: how many representative herbar collections?
Authors: Borovichev Evgeny , Kozhin Mikhail , Akhmerova Diana , Koroleva Natalia , Petrova Olga
Published: November 2021

The Khibiny Mountains are a territory with a high botanic diversity and include value habitat types. We analyzed the representativeness of the herbaria of the Polar-Alpine Botanical Garden-Institute (KPABG) and the Institute of Industrial ecology Problems of the North (INEP) in relation to protected species of vascular plants in the Khibiny. The collections include 34 of 49 protected species recorded in literature. In the course of the analysis, the complete information from the herbarium labels was converted into electronic format and prepared to include into the database of the “Flora of Russian Lapland”. In the absence of precise geographic coordinates on the labels, geo-referencing was performed according to a standardized protocol using topographic maps of the Khibiny Mts at a scale of 1:100,000, archival materials (field diaries and reports) and high-resolution satellite images of the earth’s surface. Most of the regionally protected species in herbaria were collected in the most accessible southern part of the Khibiny, near by the human transformed territories and along a dirt road through the mountain pass. regional botanical Natural Monuments and federal Protected Area Polar-Alpine Botanical Garden-Institute are among the best studied. The herbaria include specimens collected over almost hundred-of-years periods and almost no specimens of protected species from the “Khibiny” National Park.
“These Hearts, Can They Reach Tranquility?”
Authors: Snir Reuven
Published: November 2021

The article examines the Arabic literary poetry written by Iraqi Jews in Israel during the 1950s after their immigration from Iraq. This temporal revival of Arabic poetry by Jews was the swan song of the Arab-Jewish culture as we are currently witnessing its demise– a tradition that started more than fifteen hundred years ago is vanishing before our eyes. Until the twentieth century, the great majority of the Jews under the rule of Islam adopted Arabic as their language; now Arabic is gradually disappearing as a language mastered by Jews.
O futebol no âmbito mais geral do jogo
Authors: Garcia Pedro Lerner
Published: November 2021

A reunião das ideias apresentadas neste artigo busca situar o futebol na perspectiva mais geral do jogo humano, aproximando autores de campos diversos, que vão da filosofia à crítica literária, para entender o que faz do futebol o mais popular entre os esportes globalizados. O jogo como símbolo do mundo e como origem da cultura, os tipos de jogo segundo os diferentes princípios que os regem, o papel do acaso no futebol, as diferentes maneiras de se assistir a uma partida e as semelhanças entre a experiência estética do futebol e a do teatro são alguns dos temas pelos quais este artigo passará.
Analysis of output power characteristics for resonant-tunneling diode terahertz oscillator with cylindrical cavity resonator
Authors: Bezhko Mikhail , Suzuki Safumi , Asada Masahiro
Published: November 2021

An increasing number of novel applications has appeared in the previously unexplored frequency range of 0.3–3.0 THz, where sub-mm radio waves meet far-infrared optical waves. Resonant-tunneling diodes (RTDs) are considered as one of the promising compact and coherent room-temperature signal sources for terahertz (THz) applications. In this work, dependencies of output power on the resonator dimensions and output power limitation factors are analyzed for an RTD THz oscillator with a cylindrical cavity resonator, which can oscillate above 2 THz. Analysis of the output power dependencies on radius and height of the cylindrical resonant cavity shows that a decrease in the resonant cavity size could lead to an increase in the output power at a fixed frequency for this type of RTD oscillator. Moreover, in addition to the high-frequency oscillation limit, a rapid decrease in the output power in the lower frequency region was found for oscillator devices with larger RTD mesa areas. Rapid decrease in output power may occur even at frequencies around 1 THz, which could considerably limit the operational range for RTD oscillators with cavity-type resonators. To determine an approach for output power optimization and understand the nature of output power drop at lower frequencies, the output power behavior and connection with resonant cavity parameters were explained in detail. Results of the output power analysis and numerical calculation indicate that for the RTD structure and circular-resonator geometry considered in the present study, output powers up to 45 μW at 1.5 THz and up to 0.25 μW at 2.5 THz could be expected for single oscillator design.
Spectral analysis of H2O near 7180 cm–1 to accurately measure trace moisture in N2 gas: evaluation of line shape profiles using Akaike Information Criterion
Authors: Hashiguchi Koji , Lisak Daniel , Cygan Agata , Ciuryło Roman , Abe Hisashi
Published: November 2021

The absorption spectra of H2O in N2 gas were measured at atmospheric pressure and room temperature near 7180 cm–1 in the moisture range of 9.7–148.7 nmol mol−1 in mole fraction using cavity ring-down spectroscopy. The line shape profiles used for the spectral analysis for the trace moisture measurement were evaluated based on the Akaike Information Criterion as well as the fitting residuals. The optimal line shape profile in this study was the speed-dependent asymmetric Voigt profile (SDAVP). From the comparison of the fitting results calculated using the Lorentzian profile (LP) with those calculated using the SDAVP, the relative difference in the integrated line area between the two line shape profiles was found to be systematic and constant. The measurement error due to the use of the LP could be corrected using a correction factor of 1.00479 ± 0.00077.
Computer Assisted System for Detecting Pulmonary Embolism in Lungs
Authors:   Department of Electronics and Communication Engineering, Malla Reddy College of Engineering and Technology, Hyderabad, India., Sucharitha Dr. M. , Sai Dr. P.H.V. Sesha Talpa ,   Department of Mechanical Engineering and Director R & D, Malla Reddy College of Engineering and Technology, Hyderabad, India., Lahari Ms. M. L. R. Chaitanya ,   Associate Professor, Department of Mechanical Engineering, Malla Reddy College of Engineering and Technology, Hyderabad, India, Bee Ms. P. Haseena ,   Associate Professor, Department of Mechanical Engineering, Malla Reddy College of Engineering and Technology, Hyderabad, India
Published: November 2021

A pulmonary embolism (PE) occurs when a blood artery in the lungs becomes suddenly blocked, generally owing to a blood clot. PE is a frequent life-threatening illness that should be diagnosed as soon as possible. A novel approach for automatically detecting PE in contrast-enhanced CT images is suggested in this research. To identify PE, computerized tomography (CT) is the main test to capture images. It is quick test, incursive with good quality images, enhanced contrast and multi-sliced images can be obtained. Candidate identification, feature calculation, and classification are all part of the system. The major aims of candidate detection are to include PE with even entire occlusions and to eliminate erroneous diagnosis of tissue and parenchymal disorders. When calculating characteristics, the location and structure of the pulmonary vascular tree, as well as the severity, form, and size of an embolus, are all taken into consideration. The ability of the CAD tool to identify emboli in the sectional and sub sectional pulmonary Arterial Tree (PAT) was examined.
Experimental and CFD Analysis of GW70 based Cu Nanofluids in a Parallel Flow Heat Exchanger
Authors:   Research Scholar, School of Mechanical Engineering, Reva University, Bangalore, India., Lahari M.L.R. Chaitanya , Sai P.H.V. Sesha Talpa ,   Professor & Director-R&D, Department of Mechanical Engineering, Malla Reddy College of Engineering and Technology, Hyderabad, India., Sharma K.V. ,   Emeritus Professor, Centre for Energy Studies, Jawaharlal Nehru Technological University, Hyderabad., Narayanaswamy K.S. ,   Professor & Director, School of Mechanical Engineering, Reva University, Bangalore, India., Bee P. Haseena ,   Research Scholar, School of Mechanical Engineering, Reva University, Bangalore, India., Devaraj S. ,   Professor, School of Mechanical Engineering, Reva University, Bangalore, India.
Published: November 2021

The Nusselt number, overall heat transfer, and convective heat transfer coefficients of glycerol-water-based Cu nanofluids flowing in a parallel flow double pipe heat exchanger are estimated using CFD analysis. Single-phase fluid approach technique is used in the analysis. Ansys 19.0 workbench was used to create the heat exchanger model. Heat transfer tests with nanofluids at three flow rates (680<Re<1900) are carried out in a laminar developing flow zone. For testing, a 500 mm long concentric double pipe heat exchanger with tube dimensions of ID=10.2 mm, OD= 12.7 mm, and annulus dimensions of ID=17.0 mm, OD= 19.5 mm is employed. Copper is utilized for the tube and annulus material. This study employed three-particle volume concentrations of 0.2 percent, 0.6 percent, and 1.0 percent. The mass flow rates of hot water in the tube are 0.2, 0.017, and 0.0085 kg/s, while the mass flow rates of nanofluids in the annulus are 0.03, 0.0255, and 0.017 kg/s. The average temperature of nanofluids is 36°C, whereas hot water is 58°C. In comparison to base liquid, the overall heat transfer coefficient and convective HTC of 1.0 percent copper nanofluids at 0.03 kg/s are raised by 26.2 and 46.2 percent, respectively. The experimental findings are compared to CFD values, and they are in close agreement.
Black Feminist Wondaland
Authors: Gilliam Elizabeth , Toliver S. R.
Published: November 2021

Janelle Monae’s, Dirty Computer, tackles issues like feminism, racism, sexuality, Black womanhood, self-assurance, and growth. Each song on the album is presented from a first-person point of view, offering a unique insight into a story that shares an intimate portrait of what it means to embrace authentic Black womanhood. Monae’s lyrical storytelling brings to life stories of love, loss, fear, and celebration, offering an experience that cannot be ignored. Still, the numerous ways Black women experience joy and celebration are often overlooked in higher education. Thus, in this article, we center Monae’s album and offer the framework, Black Feminist Wondaland (BFW), to account for how Black women reckon with the misogynoir enacted against us, celebrate ourselves as an act of radical resistance, and reclaim our joy in a society bent on keeping us in a state of sorrow.
Researching, Learning, and Healing Within the Master’s House
Authors: Phelps-Ward Robin , Harrington Keneisha , Bowers Lashia , Harry Dion , Williams Maurice , Fine Cherese , Smith Travis
Published: November 2021

This paper tells the story of resistance and efforts to work and mend within an anti-Black institution: higher education. Through a collaborative autoethnographic approach, seven Black academics connected to the Action Research Collective team (a group focused on supporting graduate students and cultivating equitable campus climates), explored how doing research as a team served as a mechanism for healing from the trauma of anti-Black racism. This paper illustrates how researching, learning, and healing can manifest within research teams by emphasizing visibility, shared experience, authenticity, and community.
Because We Know
Authors: Okello Wilson Kwamogi , Stewart Terah J.
Published: November 2021

Black mattering is contested terrain. As we write this, more than 25 states and municipalities have proposed or passed legislation banning critical race theory (CRT) and the incorporation of material(s) that upset the normative curricular and pedagogical conditions of whiteness. Against this backdrop, what is mattering for Black people? This essay interrogates the formations and utilizations of educational pedagogies and curriculum. It raises questions about the implicit intent of these mechanisms on and for the lives of Black people, with specific attention to the notion of mattering. Plainly, pedagogies and curriculum that have failed to center or theorize the ways anti-Blackness facilitates projects of unmattering have engendered a set of conditions that reproduce anti-Black racism in and beyond the educational context. To address these conditions, we conceptually trouble the notion of mattering by meditating on a set of priorities urgently embodied by Black passage into and through anti-Black spaces and places.
ВПЛИВ ЦІНОВОЇ КОН’ЮНКТУРИ НА СВІТОВИХ СИРОВИННИХ РИНКАХ НА ЕКОНОМІЧНЕ ЗРОСТАННЯ ОКРЕМИХ КРАЇН СХІДНОЇ ЄВРОПИ: ЕМПІРИЧНІ АСПЕКТИ
Authors: Баженова Олена , Вінс Валерія
Published: November 2021

У статті проведене емпіричне дослідження взаємозв’язку основних макроекономічних індикаторів функціонування національних економік окремих сировинних країн Східної Європи (України, Молдови та Білорусі) та цінової кон’юнктури на світових ринках сировини. Аналіз результатів оцінювання побудованих з цією метою економетричних моделей засвідчив існування залежності між індексом світових цін на сировинну продукцію, що становить значну частку експорту, та економічним зростанням у досліджуваних країнах Східної Європи. Це сигналізує про необхідність кардинальної трансформації моделі економічного розвитку даних країн в контексті інтенсифікації виробництва, стимулювання експорту товарів з вищою доданою вартістю та посилення інноваційної складової зростання, структури національного експорту та, як наслідок, гарантування національної конкурентоспроможності.
The role of the cognitive-communicative approach in the foreign language teaching: theoretical aspects
Authors: Holubova Hanna
Published: November 2021

The scientific research is devoted to the investigation of the cognitive-communicative approach in the foreign language teaching. It is emphasized that for providing language proficiency at the level that would allow the use of the foreign language in professional activities, students’ positive motivation must be paid great attention as the incontestable factor in successful learning. Teaching a foreign language based on cognitive communicative technologies is one of the most dynamically developing areas in the methodology, whereas the leading role in its implementation is played by the communicative principle and the principle of consciousness, being the base of forming an adequate understanding of speech phenomena and skills, as well as the ability to apply them in real communication. The cognitive-communicative approach is understood as such organization of the educational process, the basis of which is students’ communicative interaction, which provides their participation as an object and subject of cognitive activity.
STRESS, ANXIETY AND DEPRESSION AMONG RADIOGRAPHY STUDENTS DURING THE COVID-19 PANDEMIC
Authors: Gkatzia Nikoleta , Dousi Maria , Syrgiamiotis Vasilis , Kechagias Dimitrios , Gogou Lida
Published: November 2021

INTRODUCTION:This study aims to evaluate the psychological impact of COVID-19 emergency period on a sample of Radiography students.
METHODS:Levels of anxiety, stress, and depression were measured in a sample of 206 Greek Radiography students, using the DASS scale.
RESULTS: Radiography students reported moderate levels of stress anxiety and depression. The 27,7% for depression scale, 20,4% for anxiety
and 15% stress found to have extremely severe levels. 48% of the sample declared dissatised and 16,1% very dissatised from the teaching
method and 83% from our sample declared that prefer traditional classroom lesson. These perceptions of the students about the effectiveness of the
distant educational method have signicant differences in all subscales.
CONCLUSION: The impact of the Covid-19 pandemic on Radiography students' education and mental health are undeniable. Academics should
discuss future strategies to address problems that arise.
Effects of Pausinystalia Yohimbe Extract On Xylazine Anaesthesia In The Red Sokoto Buck
Authors: Kolawole V.O
Published: November 2021

The effects of Pausinystalia yohimbe extract and xylazine on the onset of sleep, duration of sleep and vital parameters were used as investigating parameters. Twenty (20) red Sokoto bucks were divided into four (4) groups consisting of five (5) bucks per group. Control group 1 (20mg Xylazine); Group 2 (10, 20, 30 mg plant extract); Group 3 (Plant extract and xylazine); Group 4. Different doses of Pausinystalia yohimbe extract were administered at 5 minutes pre-treatment time of xylazine HCI (20mg/kg). There was significant (p < 0.05) increase of different doses of Pausinystalia yohimbe in respiratory rate, pulse rate and temperature but a significant (p<0.05) decrease on combination of xylazine and Pausinystalia yohimbe extract.
Effect of Different Water Qualities On Clarias Gariepinus Growth And Survival
Authors: Imam T. S. , Abdullahi Z. D , Sani A.
Published: November 2021

Growth and survival of Clarias gariepinus in different water qualities were investigated. Initially, water of equal quality was used for the experiment, later the quality of water varies due to period of water change, (daily-T4, weekly-T3, bi-weekly-T2 and monthly-T1). Physico-chemical parameters were analyzed. Two hundred and forty (240) seven weeks old fingerlings of C. gariepinus were randomly distributed into 12 plastic tanks. Poor growth of C. gariepinus was observed in the treatment tanks (T1, T2 and T3), compared with growth of fish in the control (T4) which was progressive as indicated by the higher value of condition factor. Treatment tanks had significantly (P < 0.05) higher EC, TDS, Turbidity, Ammonia, Nitrate and Nitrite and significantly (P < 0.05) lower DO than culture water in control container. Slight growth was recorded for fish in T1 and T2 until the second week when drop in fish weight was observed. This study has shown that poor water quality can reduce growth rate and survival of C. gariepinus.
The Effects of Bonny Light Crude Oil (Blco) on the Helminth Parasite Heligmosomoides Bakeri (Polygrus) of Mice.
Authors: Chukwu V. E.
Published: November 2021

This study examined the effect of crude oil on Heligmosomoides bakeri in albino mice. A total of 35 albino mice of 5-8 weeks were used for this study. The mice were randomly divided into five groups (A, B, C, D and E) of 5 mice each and infected with 0.13ml of H. bakeri larvae. Mice in the first two groups (A and B) were given crude oil per os at the concentrations of 0.2 and 0.05 mg/ml respectively. Those in group C were given Albendazole and group D infected but not treated. Group E was used as a naïve control group. Two other groups F and G were used for toxicity test. All mice were observed for clinical signs and symptoms of abnormality all through the study and all parameters were assessed following standard procedures for 5 weeks. Administration of crude oil per os to mice in groups A and B at the dose levels used in this study showed no significant (p>0.05) changes in PCV, body weight and fecal egg counts of the mice. There was a significant (p<0.05) difference in larval mortality test between the crude oil treated groups compared to the control group by their movement (if normal, moving or dead i.e. no observed motion within 10 mins). The Albendazole group C had the least worm burden and fecal egg count compared to the groups treated with different concentration of Crude oil. In conclusion, it may be suggested that heavily infected animals may not respond to treatment with crude oil against nematodes which discredit the unorthodox folklore medicine for parasitic treatment by some rural. Its effect on the worms appeared to be transient.
Physicochemical Analysis and Characterization of Biodiesel Produced From Soya Bean (Glycine max) Oil.
Authors: Mofio B.M. , Danboyi J.J.
Published: November 2021

Physicochemical analysis of Biodiesel produced from soya bean oil was carried out in order to ascertain the quality of the biodiesel produced as regards its physical and chemical parameters which includes visual appearance, colour, cloud point, flash point, pour point, cetane index, diesel index, kinematic velocity and calorific value. The oil was extracted from 60g of soya bean seeds (Glycine max) using the soxhlet method of extraction. Biodiesel which is biodegradable was therefore produced by chemical reaction of the oil with a methoxide solution containing 7cm3 of methanol and 0.2g of Sodium Hydroxide as the catalyst through a process called transesterification. Two products were obtained, the glycerin which is denser settled at the bottom while the fatty acid methyl esters was found to be on the top. 8.4cm3 of biodiesel and 3cm3of glycerin was recovered, the yield of biodiesel was calculated to be 50.74% and then it was subjected to physicochemical analysis to ascertain its quality. The properties of biodiesel was tested and found to be in confinement with the ASTM D6751 specification for biodiesel fuels and the results obtained with test methods used for colour and appearance was established to be a yellowish and clear liquid (visual), cloud point +8OC (D5773), pour point +4OC (D5950) and acid value 0.3 mg/KOH/g (titrimetric). Based on the result for the cloud and pour point of the produced biodiesel, B100 (100% biodiesel) can be used in Nigeria with no challenge as compared to country like Russia where their temperature is extremely cold which could cause biodiesel to gel and then solidify.
Ultrasonic thermometry by a localized measurement of the longitudinal wave velocity using sound field information
Authors: Leipner Emanuel , Wolf Mario , Kühnicke Elfgard , Kupsch Christian
Published: November 2021

Temperature monitoring during medical interventions such as hyperthermia or radio frequency ablation is a demanding task. An alternative to expensive MRI measurements are ultrasound measurements exploiting the dependence of sound velocity on temperature. In this paper, a new measurement technique is presented that determines the sound velocity spatially resolved in tissue phantoms with the aim of temperature monitoring. The measurements are performed with annular arrays operating element-wise in pulse-echo mode to allow synthetic focusing. Unlike speckle techniques, which also evaluate echoes from scatterers, this method allows to determine the true position of scatterers and absolute values of local sound velocity, rather than evaluating only relative changes. This is achieved by varying the set of delay times used for focusing and determining the set that gives the maximum amplitude of the focused echo. The measurement technique is described in detail and measurement results are shown. The achievable resolution (1mm axial and 0.4mm lateral) and accuracy of 98% are determined. Sound field simulations are used to model the measurement process and vary measurement parameters. Thus, the effect of parameter variations on the achievable accuracy can be evaluated very precisely.
UQuAD1.0: Development of an Urdu Question Answering Training Data for Machine Reading Comprehension
Authors: Ahmed Samreen , khoja shakeel
Published: November 2021

In recent years, low-resource Machine Reading Comprehension (MRC) has made significant progress,
with models getting remarkable
performance on various language datasets. However,
none of these models have been customized for the Urdu language. This work explores
the semi-automated creation
of the Urdu Question Answering
Dataset (UQuAD1.0) by combining machine-translated SQuAD with human-generated samples derived from Wikipedia articles
and Urdu RC worksheets from Cambridge O-level books. UQuAD1.0
is a large-scale Urdu dataset intended for extractive machine reading comprehension tasks consisting of 49k question
Answers pairs in question,
passage, and answer format. In UQuAD1.0, 45000 pairs of QA were generated by machine translation of the original
SQuAD1.0 and approximately 4000 pairs via crowdsourcing. In this study, we used two types of MRC models: rule-based baseline and advanced
Transformer-based models. However, we have discovered that the latter outperforms
the others; thus, we have decided to concentrate solely on Transformer-based
architectures. Using XLMRoBERTa and multi-lingual BERT, we acquire an F1 score of 0.66 and 0.63, respectively.
The role of antiviral therapy in the management of patients with liver cirrhosis associated with chronic HBV and HCV infection
Authors: Garbuzenko D. V.
Published: November 2021

The formation of the liver cirrhosis (LC) is an unfavorable event of the natural history of chronic liver diseases being accompanied by complications that often cause a fatal outcome. The study of the effectiveness of drugs that affect various etiopathogenetic mechanisms of this condition is an urgent problem of modern hepatology.The aim of the review was to show the role of antiviral therapy (AVT) in the management of patients with LC associated with chronic HBV (hepatitis B virus) and HCV (hepatitis C virus) infection.PubMed database, Google Scholar search engine, Cochrane Systematic Reviews, eLIBRARY.RU electronic scientific library, as well as the reference lists of articles were used to search for scientific articles. The relevant objectives of the review of the publications were identified for the period since 2000 up to 2021 by the search queries as following: «liver cirrhosis», «liver fibrosis», «chronic HBV infection», «chronic HCV infection», «portal hypertension», «treatment». The inclusion criteria were restricted to the management of patients with LC associated with chronic HBV and HCV infection.Current guidelines recommend indefinite treatment of patients with HBV-associated LC with nucleos(t)ide analogues regardless of serum HBV DNA levels, while the modern concept of using direct-acting antiviral drug combinations has become the standard treatment for HCV-associated cirrhosis. Studies have shown the ability of AVT to inhibit and reverse fibrotic processes in LC associated with chronic HBV and HCV infection. It has also been reported that HBV/HCV eradication prior to orthotopic liver transplantation improves long-term overall survival.This, in turn, can reduce the severity of portal hypertension and decrease the risk of associated complications, as well as normalize liver function. Thus, ensuring the availability of drugs for those in need of AVT will not only help prevent the development of LC, but also improve the quality of life and increase its expectancy of patients suffering from this disease.