bluuebunny/crossref_metadata_2025 huggingface dataset:
Clonidine and dexmedetomidine as adjuvant to ropivacaine for supraclavicular brachial plexus block during upper limb surgery: A comparative study
Authors: Sangita Mandal  , Sanjay Maitra  , Abhijit Mukherjee  , Mandal Mohanchandra
Published: July 2022

Background: Various adjuvants are added to local anesthetics to increase the duration of block during supraclavicular brachial plexus (SCBP) block. Dexmedetomidine, a newer and potent alpha2 receptor agonist, has 10 times higher selectivity than clonidine. Many studies have already evaluated the efficacy of clonidine and dexmedetomidine as perineural adjuvants and have reported wide variations in the prolongation of post-operative analgesia. Some studies have reported the absence of adjuvant’s effect while a few have not focused all the facets of block characteristics.
Aims and Objectives: The aim of the study was to compare the efficacy of clonidine and dexmedetomidine as adjuvant to ropivacaine during SCBP block for the upper limb surgeries, in terms of duration of post-operative analgesia (Primary outcome). The onset and duration of sensory and motor block, and adverse effects, if any, were observed.
Materials and Methods: Ninety patients, aged between 40 and 60 years of either sex, undergoing upper limb surgery, were randomly allocated in to three groups to receive either 30 ml of 0.5% ropivacaine and 2 ml saline (Group R, n=30) or 30 ml 0.5% ropivacaine plus clonidine (1 mcg/kg) plus saline to make a total volume 32 ml (Group C, n=30), or 30 ml 0.5% ropivacaine and dexmedetomidine (1 mcg/kg) plus saline to make a total volume 32 ml (Group D, n=30). The duration of post-operative analgesia, other block characteristics, and adverse events, if any, was assessed.
Results: Mean duration of post-operative analgesia was found to be considerably higher in dexmedetomidine group compared with clonidine group and ropivacaine alone group (664.13 vs. 551.77 vs. 465.47, respectively, P<0.001). The duration of sensory and motor block was considerably longer in dexmedetomidine group compared with clonidine and control group. Adverse events were comparable among the three groups.
Conclusion: Dexmedetomidine appears to be a better alternative to clonidine as adjuvant in terms of prolonged post-operative analgesia and comparable adverse events.
Descriptive epidemiology of COVID-19 deaths in the first, second, and third pandemic waves: A comparative study from Southern India
Authors: Mathews Manu , Ramesan K. , Kumar Ajith , Kurian Simi , Divakaran Binoo
Published: July 2022

Background: India has seen a three-wave pattern of COVID-19 infections. With the looming threat of recurrent waves with mutated strains, it is important to understand the demographic and clinical characteristics of the deceased COVID-19 patients in these three waves to identify the vulnerable population and guide public health interventions to decrease COVID-19-related mortality.
Aims and Objectives: The study was done to compare the age distribution, mean duration of illness, clinical characteristics, coexisting comorbidities, and causes of COVID-19-related deaths during the three pandemic waves.
Materials and Methods: We obtained COVID-19 death summaries from the medical records of a large tertiary health-care center in North Kerala, India. Three groups of COVID-19 deaths were selected: The first group included patients who died in the first wave between July 01, 2020, and December 31, 2020 (n=311), the second group included those who died in the second wave between March 01, 2021, and June 30, 2021 (n=431), and the third group included those who died in the third wave between January 01, 2022, and March 15, 2022 (n=76).
Results: The mean age of the deceased was significantly higher for the third wave (P<0.001). The mortality in young patients (≤50 years) was higher for the second wave and that in elderly patients (≥80 years) was higher for the third wave (P<0.001). Males were predominantly affected in all three waves (P=0.29). The average duration from symptom onset to death significantly decreased in the third wave (5 days, P<0.001). There was an increased proportion of COVID-19-related deaths in patients with diabetes in the second wave (59.4%; P=0.006). Maternal mortality and deaths without any coexisting comorbidities were higher in the second wave. The main cause of death was respiratory failure due to COVID-19 pneumonia in all three waves.
Conclusion: The comparative characteristics of the descriptive epidemiology of three pandemic waves differed significantly. The second COVID-19 wave was different from the first wave and third wave, with more deaths in the young, and increases in the proportions of deaths with diabetes, maternal deaths, and deaths in those without any preexisting comorbidities. The third-wave had more deaths in the elderly and a shorter duration from symptom onset to death.
THE BEHAVIOUR OF ALUMINIUM ION IN TREATMENT OF DAIRY WASTEWATER
Authors:   Civil Engineering Department, College of Engineering, Mustansiriyah University, Baghdad, Iraq., A. Hasan Ali
Published: July 2022

In this article, it has been prepared synthetic dairy samples according to the global dairy wastewater characteristics. Has been used the OGAWA SEIKI Ltd apparatus and applied on these samples to predict the behavior of the alum in the treatment process. Physiochemical analyses were achieved to samples before and after treatment to stand on the ability of success. These tests have been achieved according to The experimental tests of characteristics were done as stated by American Public Health Association (APHA), American Water Works Association (AWWA), and Water Environment Federation (WEF). Results showed that behind the high removal, efficiency is many mechanical terms of coagulation, perhaps the most prominent of which is the scavenging mechanism. The effectiveness of the aluminum ion is at a certain limit, in limited pH, an increase in the concentration of this ion means an increase in the concentration of the positive charge and get the inverse effect. due to the wide capacity of aluminum ions to make bonds by combining with negative roots, it has been noticed the percentage removal of phosphorus reached up to 95%. These compounds create aluminum phosphorus flocs. The aluminum phosphorus compounds have gelatinous properties could make enmeshment and attract different particles and then settling in the bottom.
MICROBIAL-INDUCED CALCITE PRECIPITATION" AS A POTENTIAL SUSTAINABLE TECHNIQUE FOR POLLUTED SOIL BIOREMEDIATION: A REVIEW
Authors:   Department of Environmental Engineering, College of Enginerring, Mustansiriyah University, Baghdad, Iraq, Samer Hadi Zahraa , Abdulhussein Saeed Khitam ,   Department of Water Resource Engineering, College of Enginerring, Mustansiryah University, Baghdad, Iraq
Published: July 2022

Industrialization and population growth have increased the emission and buildup environmental heavy metals. These components' bioaccumulations as exposure have been related to a range of illnesses and cancer, and the mechanical and physical properties of soil are altered. The "Microbial Induced Calcite Precipitation" is environmentally green, friend and sustainable method. This review focused on the metal remediation technology's effects and how to make them sustainable and more environmentally friendly. Many bacteria that produces urease, bacillus is a more common type. Bacteria, with sizes ranging from 0.5 to 3.0µm, are the most common microbes found in soils. It is critical to examine the type of soil, Bacterial size, and size of pore throat. The calcium carbonate majority tend to coat the surface of soils with coasrse particles in state of the contact points in soils with particles smaller than bacterial size (heterogeneous and limited precipitation). The bacterial concentration appears to affect crystal shape, calcium carbonate formation, and the cementation effect of geomaterials. Calcite precipitation takes place most when the pH is between 7.5 and 9.5. Calcite is formed three times at 50°C, while the unconfined compressive strength is only 60% of that at 25°C.Calcium carbonate can be immobilized or formed into undissolved compounds by binding free ions to the calcium carbonate's surfaces, resulting in a form of non-toxic and chemically stable.
EXTRACTION OF DOUBLE-DIODE PHOTOVOLTAIC MODULE MODEL’S PARAMETERS USING HYBRID OPTIMIZATION ALGORITHM
Authors:   Department of Computer Engineering, College of Engineering, Mustansiriyah University, Baghdad, Iraq, M. Abbas Mawj , H. Muhsen Dhiaa ,   Department of Computer Engineering, College of Engineering, Mustansiriyah University, Baghdad, Iraq
Published: July 2022

This paper presents seven parameters of double diode model of the photovoltaic module under different weather conditions are extracted using differential development with an integrated mutation per iteration (DEIM) algorithm. The algorithm is produced by integrating of two other algorithms namely, electromagnetism like (EML) and differential evolution (DE) algorithms. DEIM enhances the mutation step of the original DE by using the attraction-repulsion principle found in the EML algorithm. Meanwhile, a novel strategy based on adjusting mutation and crossover rate factors for each iteration is adopted in this paper. The implemented scheme's success is confirmed by comparing its results with those obtained by techniques cited in the literature. Along with the results, the DEIM suggests high closeness with the experimental I–V characteristic. For the proposed algorithm an average Root Mean Square Error (RMSE), absolute error (AE), mean bias Error (MBE), and execution time values were 0.0608, 0.044, 0.0053 and 23.333, respectively. The comparisons and evaluations results proved that the DEIM is better in terms of precision and rapid convergence. Furthermore, fewer control parameters are needed in comparison to EML and DE algorithms.
Mechanical Properties of Sandwich Composite using Glass Fiber Reinforced Polymer as A Skin and 3D Printed Polylactic Acid as A Core
Authors: Ridlwan Muhammad , Nurgesang Faisal Arif , Riza Rahmat , Syafi'i Nur Muhammad
Published: July 2022

Recently, 3D printing technology has become a practical method to realize products rapidly. It is suitable for making small quantities of products. Although it is capable of printing with a high level of geometric complexity, there is a lack of tensile strength due to its process where the products are printed layer by layer. However, this technology is potentially to be combined in a composite manufacturing process. Mostly, a composite product is made by using a mold. This mold is relatively expensive and can only create a product with less complexity. Nevertheless, the composite product has main advantages such as light, strong, and flexible. Therefore, combining these two technologies is a new breakthrough in realizing products with high complexity, light, strong, and flexible. This study aims to determine the mechanical properties of sandwich composite filled with 3D printed product as a core. Several parameters were varied including core thickness and skin thickness. The skin material was a Glass Fiber Reinforced Polymer (GFRP) while the core material was 3D printed Polylactic Acid (PLA). The tensile and bending tests have been done in accordance with ASTM D638 and ASTM D790. The results showed that the addition of GFRP skin on the sandwich composite could significantly increase the tensile strength but did not have an impact on the flexural strength. The highest flexural strength of 50.36 MPa was achieved at 3 layers of GFRP skin while a remarkable tensile strength of 55.74 MPa was obtained at 4 layers GFRP skin. Moreover, the addition of core thickness also does not have an impact on flexural strength. The flexural strength of the 3D printed core was around 20 MPa for all thickness. However, when 2 layers of GFRP skin were used, a remarkable flexural strength of 57.67 MPa was obtained but the flexural strength was then decreased when using 10 and 15 mm cores.
Kedudukan Hukum Internasional dalam Pembukaan Undang-undang Dasar Negara Republik Indonesia Tahun 1945
Authors: Mustakim Mustakim , Dirgantara Herman
Published: July 2022

Tulisan ini bertujuan untuk menjelaskan bagaimana kedudukan hukum internasional di dalam Pembukaan UUD NRI 1945. Metode penelitian yang digunakan adalah metode penelitian hukum normatif, dengan menggunakan pendekatan perundang-undangan (statute approach), konseptual (conceptual approach) dan pendekatan historis (historical approach) yang kemudian diolah dan dianalisis secara kualitatif. Kajian ini menyimpulkan bahwa Pembukaan UUD NRI 1945 sebagai rechtside Indonesia nyatanya memuat secara implisit keinginan konstitusi untuk melegitimasi hukum internasional dalam sistem hukum Indonesia di mana di dalamnya mengandung nilai-nilai: pertama Pembukaan UUD NRI 1945 memuat perintah menjunjung tinggi norma-norma internasional melalui pengakuan, penghormatan dan jaminan terhadap perikemanusiaan dan perikeadilan sehingga menolak segala bentuk penjajahan di atas dunia. Dan kedua, Pembukaan UUD NRI 1945 telah memberi arah guna turut mewujudkan ketertiban dunia berdasarkan kemerdekaan, perdamaian abadi, dan keadilan sosial sebagai salah satu tujuan bernegara selaku tujuan tertinggi.
FUTURE PRESCHOOL TEACHERS’ TRAINING IN PHYSICAL EDUCATION OF PRESCHOOLERS IN STUDYING PRESCHOOL PEDAGOGY
Authors:   Oleksandr Dovzhenko Hlukhiv National Pedagogical University, Zahorodnia Liudmyla , Barsukovska Halyna ,   Oleksandr Dovzhenko Hlukhiv National Pedagogical University
Published: July 2022

У статті висвітлено зміст підготовки майбутніх бакалаврів дошкільної освіти до фізичного виховання дошкільників під час вивчення дисципліни «Педагогіка дошкільна». Здійснено аналіз останніх публікацій у галузі фізичного виховання дошкільників та фахової підготовки вихователів до формування у дітей рухової й здоровʼязбережувальної компетентностей як першочергових і базових серед інших життєвих компетентностей. Представлено зміст занять, спрямованих на формування у майбутніх вихователів фізкультурно-оздоровчої компетентності з використанням у цьому процесі мультимедійних та інтерактивних технологій. Подано рекомендації педагогам закладів вищої освіти щодо формування фізкультурно-оздоровчої компетентності в майбутніх вихователів у процесі викладання дисципліни «Педагогіка дошкільна». Виокремлено напрям подальших наукових розвідок.
SOCIAL NETWORKS AS A MEANS OF FORMING A POSITIVE IMAGE OF PRESCHOOL EDUCATION INSTITUTIONS
Authors:   Oleksandr Dovzhenko Hlukhiv National Pedagogical University, Marieiev Dmytro , Marieieva Tetiana ,   Oleksandr Dovzhenko Hlukhiv National Pedagogical University
Published: July 2022

Стаття присвячена вивченню проблеми використання соціальних мереж у процесі формування позитивного іміджу закладу дошкільної освіти. У науковій розвідці проаналізовано погляди вчених на поняття «імідж», «імідж закладу дошкільної освіти», «соціальні мережі», подано їх характеристику та визначено найпоширеніші серед українських користувачів соціальні мережі. У статті представлено послідовність створення і просування іміджу освітньої установи за допомогою соціальних мереж, розкрито переваги та правила використання соціальних мереж у формуванні позитивного іміджу закладу дошкільної освіти, а також окреслено найпоширеніші маніпуляції, що можуть стати чинником створення негативного іміджу освітньої установи.
INTEGRATION OF BRANCHES IN PRIMARY SCHOOL: DEVELOPMENT OF LOGICAL THINKING AND ABILITY TO EXPRESS OPINIONS
Authors:   Oleksandr Dovzhenko Hlukhiv National Pedagogical University, Lytvynov Andrii , Zenchenko Tetiana ,   Oleksandr Dovzhenko Hlukhiv National Pedagogical University
Published: July 2022

У статті здійснено аналіз особливостей формування логічного мислення молодших школярів. Схарактеризовано різні групи завдань на розвиток у них логічного мислення. Подано комплекс вправ, які можна використовувати з метою розвитку в молодших школярів уміння аналізувати, порівнювати, виділяти суттєве, узагальнювати та конкретизувати.
DEVELOPMENT OF INNOVATIVE COMPETENCE OF TEACHERS: A RETROSPECTIVE REVIEW
Authors:   Oleksandr Dovzhenko Hlukhiv National Pedagogical University, Kirienko Olena
Published: July 2022

У статті розглянуто історико-педагогічні передумови виникнення і розвитку інноваційної діяльності в освіті. Закцентовано увагу на поглядах науковців стосовно визначення хронологічних меж встановлення та розвитку педагогічної новатики. Здійснено аналіз інноваційних історико-педагогічних ідей, актуальних у сучасних умовах модернізації вітчизняної та зарубіжної освіти. Розглянуто дефініцію понять «інноватика», «інноваційна технологія», «інноваційна педагогічна діяльність». Відповідно до проведеного ретроспективного аналізу літературних джерел подано власну схему хронології введення в педагогіку поняття «інноваційна компетентність педагога».
СПІВПРАЦЯ НАУКОВИХ УСТАНОВ ТА ЗАКЛАДІВ МОН УКРАЇНИ В СПОСТЕРЕЖЕННІ ЗА МЕТЕОРНИМИ ПОТОКАМИ: ІНСТРУМЕНТИ, МЕТОДИ ОБРОБКИ, СПОСТЕРЕЖНІ МОЖЛИВОСТІ
Authors:   Oleksandr Dovzhenko Hlukhiv National Pedagogical University, Hrudynin Borys , Vidmachenko Anatolii ,   Main Astronomical Observatory of the National Academy of Sciences of Ukraine, Steklov Oleksii ,   Main Astronomical Observatory of the National Academy of Sciences of Ukraine, Kaliuzhnyi Mykola ,   Research Institute «Mykolaiv Astronomical Observatory»
Published: July 2022

Розглянуто питання розвитку метеорної астрономії в сучасній Україні. Специфіка методів спостережень метеорів потребує організації мережі кореспондуючих пунктів спостережень. Для досягнення цієї мети об’єднано науково-технічні можливості організацій-учасників, а це сукупність двох або більше постійно діючих спостережних станцій, розташованих на території України, які мають технічне та програмне забезпечення для проведення базисних та односторонніх спостережень метеорів у різних діапазонах довжин хвиль і проводять такі спостереження. У цьому випадку вирішуються стратегічні проблеми дослідження метеорів, структури і еволюції метеорних роїв та потоків, взаємодії метеороїдів з атмосферою Землі та їх хімічного складу. Науково-технічною продукцією станцій є результати високоточних базисних або односторонніх спостережень метеорів у різних діапазонах довжин хвиль, фундаментальні й прикладні науково-технічні дослідження.
DEVELOPMENT OF POSITIVE THINKING IN STUDENTS OF PRESCHOOL EDUCATION
Authors:   Oleksandr Dovzhenko Hlukhiv National Pedagogical University, Titarenko Svitlana
Published: July 2022

Здійснено аналіз психолого-педагогічної літератури з проблеми розвитку позитивного мислення особистості. Позитивне мислення за своєю сутністю – це значною мірою віра в успіх. Воно характеризує ставлення людини до своїх проблем і проблем людства, а також сприяє їх розв’язанню за допомогою конструктивних дій. Схарактеризовано засоби розвитку позитивного мислення у студентів спеціальності «Дошкільна освіта». Для розвитку позитивного мислення у здобувачів освіти є такі практичні підходи – самовиховання, спеціальні заняття, спецкурси, практикуми за розробленою програмою, розроблення проєктів, використання та вдосконалення особистісних якостей, обмін досвідом, осмислення мудрих думок видатних людей, дослідницька робота тощо. Встановлено, що оволодіння позитивним мисленням здобувачами освіти сприятиме реалізації свого творчого потенціалу, досягненню успіху в будь-якій справі, збільшить віру у свої сили, сприятиме адекватному ставленню до професійних змін, формуванню оптимізму, навичок управління емоційним станом, здорового способу життя. Запропоновано практичні рекомендації з метою зміни негативного стилю мислення.
ECO-ORIENTED ICT IN THE TREANING OF FUTURE CONSTRUCTION INDUSTRY WORKERS
Authors:   Institute of Vocational Education of the National Academy of Pedagogical Sciences of Ukraine, Pyatnichuk Tetyana
Published: July 2022

У статті обґрунтовано доцільність застосування екоорієнтованих інформаційно-комунікаційних технологій у професійній підготовці майбутніх робітників будівельної галузі для формування екологічної культури та екологічного мислення. Завданням педагогів щодо впровадження екоорієнтованих ІК технологій у практику навчання робітників будівельної галузі є адаптація до життя в інформаційному суспільстві, формування екологічної культури та виховання. Екоорієнтовані інформаційно-комунікаційні технології передбачають використання технічних засобів; електронних навчальних матеріалів; програмних засобів з елементами штучного інтелекту тощо. Умовою ефективного впровадження ІК технологій в освітній процес є розвиток інформаційно-цифрової компетентності педагогів.
LEGAL COMPETENCE SYSTEM DEVELOPMENT OF ECONOMIC COLLEGES TEACHING STAFF
Authors:   Institute of Vocational Education of the National Academy of Educational Sciences of Ukraine, Kurok Roman
Published: July 2022

У статті проаналізовано різні підходи науковців до формулювання понять «система», «педагогічна система», «методична система» та визначення їх структурних компонентів. Зазначено, що система – це структура, що неодмінно поєднує певним чином розташовані компоненти, складники, виокремлені за якоюсь спільною ознакою. Спільним у тлумаченні вченими дефініції «педагогічна система» є те, що її відносять до родової категорії педагогічної науки, яка відбиває сутність різних педагогічних явищ та має певну структуру. Виокремлено ознаки системи (наявність компонентів, їх різноманітність, структурованість, інтегративність, ідентификаційність, ієрархічність, функціональність, стійкість, цілеспрямованість, комунікативність спадковість, керованість). Методичну систему визначено вслід за вченими як структуру, компонентами якої є цілі, зміст, методи, форми та засоби навчання. Модернізовано наявну (п’ятикомпонентну) класичну структуру методичної системи шляхом уведення до її складу компонента «цифрові технології», оскільки вони суттєво змінюють, модернізують, удосконалюють компоненти методичної системи, надають їм інших, змістово- функціональних властивостей. Доведено, що без цифрових технологій жоден з розглядуваних вище складників функціонувати не може. Спроєктовано методичну систему розвитку правової компетентності педагогічних працівників економічного коледжу, що належить до складу методичної системи більш високого порядку – підвищення кваліфікації педагогічних працівників, яка, у свою чергу, є складником мегасистеми – педагогічної системи підготовки фахівців в економічному коледжі.
Віденська музична україніка і творчість Андрія Гнатишина
Authors: Кияновська Любов
Published: July 2022

Якщо замислитись, які європейські міста відіграло особливо важли­ву роль у становленні української музичної культури, найчастіше става­ло осередком зародження нових ідей і напрямів, що найістотніше впли­вали на художній світогляд наших композиторів, де зародилось найбільше культурницьких українських товариств - то пальму першості, безперечно, треба буде віддати Відню і Празі.
Українська Попелюшка і німецький Чоботар: історичний есей
Authors: Кондратьєва Наталія
Published: July 2022

Якоб Беме народився 1575 року в селі біля міста Герліца (Саксонія в Німеччині) в родині селянина. Спершу  допомагав батькам по господар­ству, пас домашню худобу. Згодом його віддали в навчання до шевця. У сільській школі він навчився читати й писати німецькою мовою, цим освіта й завершилася, латині він не знав. З роками став самостійним чо­ботарем, займався також іншими ремеслами - торгував пряжею, знався на садівництві. Основну частину життя провів у Герліці, де й помер 1624 року.
Osteopetrosis maligna infantil: una enfermedad genética
Authors: Gutiérrez Brenes Leonidas José , Valverde Chinchilla Katerine , Víquez Quesada Maricela
Published: July 2022

La osteopetrosis maligna infantil, también llamada Enfermedad de Albers- Schönberg o Huesos de Mármol comprende un síndrome que provoca un tejido óseo duro y quebradizo, huesos anchos y cortos, propensos a fracturas difíciles de tratar. Se clasifican en dos grandes grupos: Autosómica Dominante y Recesiva. Es muy infrecuente, presenta un mal pronóstico en las primeras etapas de la vida. Es una patología ósea hereditaria autosómica recesiva que se caracteriza por el aumento de la densidad ósea causada por una anomalía en la función de los osteoclastos. Los niños se pueden diagnosticar inmediatamente al nacer por su corta estatura, por la presencia de fracturas patológicas, osteomielitis en huesos largos e infecciones a repetición. En la mayoría de los casos existe afectación multisistémica.  El diagnóstico de la OMI es principalmente dado por la clínica, exámenes de laboratorio e imágenes radiológicas. La prueba confirmatoria es mediante el análisis genético molecular. La complicación más severa de la Osteopetrosis corresponde la supresión de la médula ósea. La opción terapéutica más efectiva para esta patología es el trasplante de células progenitoras hematopoyéticas.
Fractura trimaleolar
Authors: Ugalde Ovares Carlos Eduardo , Madrigal Calderón José Pablo , Masis Marroquín Adriana Carolina , Camacho Quesada Javier
Published: July 2022

Las fracturas trimaleolares representan el 7%-11% de las fracturas de tobillo y generalmente son causadas por traumas de alta energía. Son fracturas inestables que requieren reparación quirúrgica en la mayoría de los casos pues se asocia con un mejor resultado funcional por lo que se debe considerar en todos los pacientes, incluso en aquellos con comorbilidades. En este tipo de fracturas el compromiso del maléolo posterior es el componente de mayor complejidad y se asocia a un peor pronóstico. El manejo de este tipo de fracturas aún es controversial, principalmente en cuanto al orden de la reparación de los maléolos y en los materiales de fijación que deben utilizarse.
Vértigo posicional paroxístico benigno: revisión bibliográfica
Authors: Barboza Hernández Wady , Zievinger Patrick , Hernández Gutiérrez Marlon
Published: July 2022

El vértigo posicional paroxístico benigno, es el trastorno laberíntico más común causado por una estimulación mecánica de los receptores vestibulares dentro de los canales semicirculares. Se caracteriza por vértigo posicional y nistagmo, ambos provocados por cambios abruptos en la posición de la cabeza con respecto a la gravedad. El VPPB es sin duda la causa más común de vértigo en adultos. La incidencia acumulada de por vida en la población general asciende a alrededor del 10%. La incidencia aumenta en mayores de 60 años y disminuye exponencialmente por debajo de los 40 años, siendo muy raro en niños. Las mujeres son más comúnmente afectadas que hombres. En cuanto al diagnóstico, usualmente es clínico, obtenido mediante una historia clínica exhaustiva y examen físico dirigido a la valoración vestibular y neurológica, enfatizando en algunas maniobras semiológicas como Dix-Hallpike y Roll Test. Es muy importante, ante el motivo de consulta de mareo/vértigo, identificar de inicio, aquellas circunstancias que reflejen compromiso importante en la salud del paciente. Un punto clave en el diagnóstico es la diferenciación entre vértigo periférico y central.  El manejo de la patología, básicamente se basa en dos estrategias: la opción farmacológica que, puede tener un papel importante en el control a corto plazo de los síntomas del sistema nervioso autónomo, como náuseas, palidez o vómitos. La otra opción corresponde a las técnicas del reposicionamiento de canalitos o maniobras de Epley, con las cuales, si se logra el apaciguar la sintomatología del vértigo, de manera definitiva en muchos de los casos.
A Comparison of Wound Complications and Post-operative Factors Following the Use of Hydrodissection for Mastectomy in Breast Cancer Patients
Authors: Ismail Muhammad Aizat Tamlikha , Abdullah Suhaimi Shahrun Niza , Abdul Latiff Juliana , Baharudin Suraya , Azhar Shah Shamsul
Published: July 2022

Introduction: Mastectomy with axillary clearance remains the hallmark of breast cancer treatment. The conventional use of electrocautery has been associated with the risk of post-operative complications. Hydrodissection may reduce surgery time and produce fewer wound complications with less post-operative pain. The aim of this study was to compare these 2 modalities. Materials & Methods: This prospective randomised control trial was performed with breast cancer patients in Hospital Selayang, Malaysia, between 1 June 2019 to 1 September 2020. The patients were randomised into conventional and hydrodissection groups. The outcomes of interest were post-operative wound complications and other post-operative factors. A chi-square test and independent Student t-test were used to compare the 2 groups. Result: A total of 94 patients were recruited. There was a significant reduction in post-operative seroma in the hydrodissection group compared to the conventional group (40.4 vs 19.1, p<0.05). The surgery in the hydrodissection group was also shorter (114.09 vs 100.15, p<0.05), and there was less 24-hour post-operative pain (3.28 vs 2.13, p<0.05). However, no significant association was observed with other post-operative wound complications (i.e. flap necrosis, surgical site infection and hematoma) or other post-operative factors (i.e. estimated blood loss, mean volume of drain and duration of drain). It was also demonstrated that the hydrodissection technique lowers the risk of developing seroma 3-fold (odds ratio=0.349, p<0.05). Conclusion: The use of hydrodissection with liposuction cannula reduced the rate of post-operative seroma and provided a shorter operative duration and better post-operative pain control.
An initial boundary value problem for the Boussinesq equation in a Trapezoid
Authors:   Institute of Mathematics and Mathematical Modeling, Jenaliyev M.T. , Kassymbekova A.S. ,   Institute of Mathematics and Mathematical Modeling, Yergaliyev M.G. ,   Institute of Mathematics and Mathematical Modeling, Assetov A.A. ,   Karagandy University of the name of academician E.A. Buketov
Published: July 2022

This paper considers an initial boundary value problem for a one-dimensional Boussinesq-type equation in a domain, that is, a trapezoid. Using the methods of the theory of monotone operators, we establish theorems on their unique weak solvability in Sobolev classes.
On a mixed problem for Hilfer type differential equation of higher order
Authors:   National University of Uzbekistan, Yuldashev T.K. , Kadirkulov B.J. ,   Tashkent State University of Oriental Studies, Mamedov Kh.R. ,   Igdir University
Published: July 2022

The study considers the solvability of a mixed problem for a Hilfer type partial differential equation of the even order with initial value conditions and small positive parameters in mixed derivatives in threedimensional domain. It studies the solution to this fractional differential equation of higher order in the class of regular functions. The case, when the order of fractional operator is 1 < α < 2, is examined. During this study the authors use the Fourier series method and obtain a countable system of ordinary differential equations. The initial value problem is integrated as an ordinary differential equation and the integrated constants find by the aid of given initial value conditions. Using the Cauchy–Schwarz inequality and the Bessel inequality, it is proved the absolute and uniform convergence of the obtained Fourier series. The stability of the solution to the mixed problem on the given functions is studied.
A problem with shift for a mixed-type model equation of the second kind in an unbounded domain
Authors:   Institute of Mathematics of the Academy of Sciences of the Republic of Uzbekistan, Zunnunov R.T. , Ergashev A.A. ,   Kokand State Pedagogical Institute
Published: July 2022

This article studies a problem with shift in the characteristics of different families in an unbounded domain for a mixed-type model equation of the second kind. The elliptic part of this problem is the vertical halfstrip; the hyperbolic part is the characteristic triangle bounded by the characteristics of the equation. Using the extremum principle we prove the uniqueness of the solution. With the integral equations method we prove the existence of the solution.
Approximate solutions of the Riemann problem for a two-phase flow of immiscible liquids based on the Buckley–Leverett model
Authors:   Astana International University, Aldanov Y.S. , Toleuov T.Zh. ,   K. Zhubanov Aktobe Regional University, Tasbolatuly N. ,   Astana International University,   Al-Farabi Kazakh National University
Published: July 2022

The article proposes an approximate method based on the "vanishing viscosity" method, which ensures the smoothness of the solution without taking into account the capillary pressure. We will consider the vanishing viscosity solution to the Riemann problem and to the boundary Riemann problem. It is not a weak solution, unless the system is conservative. One can prove that it is a viscosity solution actually meaning the extension of the semigroup of the vanishing viscosity solution to piecewise constant initial and boundary data. It is known that without taking into account the capillary pressure, the Buckley–Leverett model is the main one. Typically, from a computational point of view, approximate models are required for time slicing when creating computational algorithms. Analysis of the flow of a mixture of two immiscible liquids, the viscosity of which depends on pressure, leads to a further extension of the classical Buckley–Leverett model. Some two-phase flow models based on the expansion of Darcy’s law include the effect of capillary pressure. This is motivated by the fact that some fluids, e.g., crude oil, have a pressure-dependent viscosity and are noticeably sensitive to pressure fluctuations. Results confirm the insignificant influence of cross-coupling terms compared to the classical Darcy approach.
Examples of weakly compact sets in Orlicz spaces
Authors:   Institute of Mathematics and Mathematical Modeling, Dauitbek D. ,   Al-Farabi Kazakh National University, Nessipbayev Y. ,   Institute of Mathematics and Mathematical Modeling,   Al-Farabi Kazakh National University, Tulenov K. ,   Institute of Mathematics and Mathematical Modeling,   Al-Farabi Kazakh National University
Published: July 2022

This paper provides a number of examples of relatively weakly compact sets in Orlicz spaces. We show some results arising from these examples. Particularly, we provide a criterion which ensures that some Orlicz function is increasing more rapidly than another (in a sense of T. Ando). In addition, we point out that if a bounded subset K of the Orlicz space LΦ is not bounded by the modular Φ, then it is possible for a set K to remain unbounded under any modular Ψ increasing more rapidly than Φ.
Enrichment of potato slices with vitamins C and D by vacuum impregnation
Authors: Günel Zehra
Published: July 2022

This study aims to enrich the potato slices with vitamins C and D, whose beneficial effects on human health have been proven by literature studies, using the vacuum impregnation method. For this purpose, the vitamin contents and antioxidant capacities of potato samples vacuum impregnated with solutions containing vitamins C and D were determined. In addition, the samples were cooked by steaming and deep-fried, cooking losses were determined, and sensory analyzes were carried out on the cooked samples. While the vitamin C content of potato slices without vacuum impregnation was determined as 14.13±0.08 mg/100g, this amount was increased by 65% with the vacuum impregnation process and determined as 39.42±0.15 mg/100g. The vitamin D contents of the potato slices, which were below the limit of detection value (LOD) in the control sample, were increased approximately six times by the vacuum impregnation process. The antioxidant capacity values of the vacuum impregnated samples were also increased (approximately 23% in the DPPH method and approximately 6.5% in the ABTS method) compared to the control sample. While very low losses were observed in the vitamin content in the steam cooking method, the vitamin D content was reduced by half in the frying process. As a result of sensory analysis, no statistical difference was found between the vacuum-impregnated samples and the control sample. When the general appreciation scores were evaluated, the most liked samples by the panelists were deep-fried.
Artificial meat production and future vision
Authors: Farhoomand Darya , Okay Aybüke , Aras E. Sümer , Büyük İlker
Published: July 2022

Artificial meat shows great promise as a method for use in future food production. It is predicted that traditional meat will be insufficient with the increasing human population. In addition, artificial meat has many advantages in terms of human health, such as being sustainable for the environment, controlled fat content, and absence of antibiotics and hormones compared to traditional meat. Artificial meat, also known as cultured meat, is produced through in vitro myogenesis, which includes muscle tissue-based protein products, stem cell culture, and differentiation, and mature muscle cell processing for flavor and texture. Artificial meat production consists of a sequential process; firstly muscle sampling for stem cell collection and followed by muscle tissue dissociation and muscle stem cell isolation, primary cell culture, high cell culture, and ending with muscle differentiation and maturation. A deep understanding of the process by considering its pros and cons will help not only artificial meat production but also the food industry in business sectors seeking new biomaterials. By explaining the methods utilized for artificial meat production, this study is created to prepare for the new era of cellular agriculture as well as for application in academia and industry.
Kontrol ve Test Uygulamaları için Düşük Maliyetli MATLAB-Simulink Uyumlu Veri Toplama Kartı Donanımı ve Yazılımı Tasarımı
Authors: PERÇİN Furkan , SAHİN Savas , GÖKÇEN Alkım
Published: July 2022

This paper presents a general-purpose data acquisition system is designed for control and test applications. In this data acquisition system, the connections of the input-output ports and peripherals are performed by employing the STM32L4 microcontroller with ARM-Cortex M4 architecture. The microcontroller communicates with the MATLAB-Simulink, transmits given commands to peripheral units, and receives data from the environment. The system has four digital input-output, two analog inputs, two analog outputs, four pulse width modulation outputs, an L298 driver, and encoder inputs. The connections of the peripherals with the microcontroller are transferred to the printed circuit board in the Altium Designer program to perform real-world applications and test. Universal Serial Bus (USB) is used to maintain communication between Simulink library and controller. This communication process provides not only the control of input-output, sensors and driver ports but also opportunity of transfer the process of sampled data. The library created in the MATLAB-Simulink environment interprets and observes the system’s data and controls the peripherals. This library contains blocks to control the overall system and each input-output. Proposed system is intended to be low-cost, accurate, reliable, high resolution, and compatible with various environments that may communicate over the USB port.
Denizanası Arama Optimizasyon Algoritması ile Çok-Odaklı Görüntülerin Birleştirilmesi
Authors: ÇITIL Fatma , KURBAN Rifat , DURMUŞ Ali , KARAKÖSE Ercan
Published: July 2022

When obtaining an image of a scene, the lens focuses on objects at a certain distance, and objects at other distances are blurred. This is called the limited depth of field problem. An approach for solving this problem is multi-focus image fusion. A clearer view of the entire scene is obtained by using the multi-focus image fusion method. For this method, at least two images captured at different focuses are combined. Various algorithms have been developed for multi-focus image fusion methods. For multi-focus image fusion, pixel-level block-based methods are commonly used. The block size is a factor that significantly affects the fusion performance. As a result, the block size parameter must be improved. The Jellyfish search optimization algorithm (JSA) is used to propose a block-based multi-focus image fusion approach based on the optimal selection of clearer image blocks from source images. The results of DWTPCA, DCHWT, APCA, PCA, SWTDWT and SWT methods, which are traditional image fusion methods, and ABC (artificial bee colony) and JSA optimization algorithms, which are metaheuristic methods, are compared. In addition, it has been determined that the JSA method has better performance than other traditional methods when compared both visually and quantitatively.
Фармацевтична індустрія Мексики: урок для України
Authors: САЛІХОВА Олена , ГОНЧАРЕНКО Дар’я
Published: July 2022

Досліджено особливості розбудови мексиканської індустрії стероїдних гормонів і конкурентні переваги, що забезпечили їй провідні позиції на світовому ринку; визначено, що усунення захисних бар’єрів, політика невтручання та від­сутність стратегії розвитку галузі призвели до її падіння та домінування іноземних ТНК. Обґрунтовано необхідність запровадження в Україні заходів з техно­логічного розвитку фармацевтичних виробництв шляхом ендогенних інновацій.
The specialist of the epoch of innovations: scenarios of labor market development
Authors: BILIAVSKA Yuliia , VARAVA Vlada
Published: July 2022

Introduction. Changes in the labor market are growing rapidly, and technology is dictating new challenges to the labor market every day, work tasks are being automated, and jobs are increasingly being taken up. The war poses additional risks. Problem. Business expectations of employees are changing, and HR services are facing new organizational challenges that require finding talent who can make unexpected decisions, work in conditions of destabilization, unprecedented risks and social upheavals. The aim of the article is to determine the factors influencing potential changes in the labor market, the formation of a virtual portrait of the employee of the future. Methods. General scientific methods are used: generalization and comparison; deductive and inductive analysis; statistical analysis to identify and summarize trends in the labor market of the future. Results. In order to consider changes in professions in the labor market, an online survey was conducted, which assessed how the emergence of new professions may affect staff and the company as a whole. The results of processing the information obtained from the survey provided an answer to a number of questions aimed at finding out how ready the company was to change due to the confrontation of trends that shape the work environment. Conclusions. It is established that the world labor market is transformed under the influence of global trends. It is not known today how the labor market will change, but aspects of each of these scenarios will emerge at some point.
Experimental investigation of the influence of grain abrasion of silicate paste on the quality of the friction surface
Authors: Makarov Volodymyr , Mastepan Mykola , Vynogradov Мykola , Bieliaiev Dmytro
Published: July 2022

Currently, many technological methods have been developed to change the structure and properties of surface layers of metal in the desired direction or to create layers with predefined properties. The use of these methods can increase wear resistance, resistance to fatigue and other performance properties of automotive parts. One such method is grinding with abrasive compounds. Grinding technology consists in applying abrasive compositions on the surface of the part and subsequent machining using special devices.The results of experimental research of influence of granularity of abrasive of silicate paste on quality of friction surfaces are resulted in work. Silicate compositions with electrocorundum abrasive of different grain size were made for the study. In order to compare the performance of silicate paste, the existing abrasive pastes «KT» with abrasive titanium carbide abrasive of similar grain size were selected. The research was performed on a special installation, which allows to reproduce with high accuracy the process of processing the abrasive composition in the laboratory. The evaluation was based on the duration of grinding, metal removal and surface quality. Stabilization of the coefficient of friction showed the completion of the grinding process.The study confirms that with increasing grain size of the abrasive silicate composition increases the time of formation of the surface layer and the amount of metal that is removed. It is proved that the high quality of the surface after treatment with silicate composition is due to the appearance in the grinding process of amorphous silica (SiO2), which enhances the work of abrasive grains and reduces the action of the scratching abrasive. Under the action of abrasive particles, SiO2 enters the depressions of the treated surface and adheres to the surface. It is established that the productivity of grinding with silicate composition is 1.5 times higher than when treating surfaces with «KT» paste. It was found that when treating surfaces with a silicate composition with electrocorundum abrasive, the removal of metal is 1.8 times less than when treating with «KT» paste. It is proposed to assign an allowance for treatment with silicate paste from 0.035 to 0.07 mm.
Evaluation of strength and reliability of vehicles
Authors: Buryak Mykola , Rozoom Ruslan , Falovych Nataliia , Progniy Pavlo , Popovich Pavlo , Shevchuk Oksana , Antonyuk Oleg
Published: July 2022

At present, the issue of ensuring the strength and reliability of wheeled vehicles, the creation of which requires compliance with all modern requirements, has not been fully resolved. In this regard, improving the methodology for assessing the strength and reliability of vehicles is an urgent task, the solution of which involves finding answers to the following questions: the choice of a rational version of the bearing system and economically sound profiles; selection of materials with appropriate physical and mechanical characteristics, etc. The choice of a rational variant of the load-bearing system of frame structures of vehicles requires a comparative assessment of possible options at all stages of design work. The load-bearing structures of vehicles are statically uncertain. Therefore, the process of assessing the strength and reliability of vehicles with different types of design schemes is a complex task, which today does not have a single methodological solution. In order to solve this problem, the model of the stress-strain state of the spatially loaded frame structure of the HESSTON S 125 solid fertilizer spreader is considered by a modified method of minimum potential deformation energy of structural structures using the Heaviside function. The frame is a welded load-bearing structure consisting of three longitudinal spars connected by a front beam and crossbars. Carrying out the correct and rational analysis of the stress-strain state of such a bearing system is possible only with the use of a modified method of minimum potential deformation energy. As a result of modeling, recommendations were obtained for the rational design of components and components of wheeled vehicles with increased reliability while reducing material consumption. Ultimately, this leads to an increase in their strength and reliability while reducing material consumption.