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2022

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Reduced Serum Concentrations Of Reactive Oxygen And Nitrogen Species Following Strenuous Exercise In The Heat Are Not Associ-Ated With An Upregulation In Serum Antioxidative Capacity, Sebastian Keller, Hannah Lisa Notbohm, Wilhelm Bloch, Moritz Schumann Dec 2022

Reduced Serum Concentrations Of Reactive Oxygen And Nitrogen Species Following Strenuous Exercise In The Heat Are Not Associ-Ated With An Upregulation In Serum Antioxidative Capacity, Sebastian Keller, Hannah Lisa Notbohm, Wilhelm Bloch, Moritz Schumann

Baltic Journal of Health and Physical Activity

Introduction: Reactive oxygen and nitrogen species (RONS) are produced as a response to exercise and play a part in guiding the adaptive response to physical training. Exercise in the heat has been shown to further increase accumulation of RONS in systemic circulation; however, a high antioxidative response or heat acclimatization mechanisms could attenuate this response. In a previous study, we found reduced RONS concentrations in trained athletes following strenuous cycling in the heat. Therefore, this secondary analysis assessed whether these reduced RONS serum concentrations are induced by an increased serum antioxidant capacity. Methods: Twelve male cyclists (V̇O2peak: 60 …

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Putting Muhammad’S (2019) Framework Of Historically Responsive Literacy To Work In Middle Grades Language Arts, Kelsey L. Benson, Matt Brown Dec 2022

Putting Muhammad’S (2019) Framework Of Historically Responsive Literacy To Work In Middle Grades Language Arts, Kelsey L. Benson, Matt Brown

Middle Grades Review

Now more than ever, it is imperative that middle grades literacy curriculum invites “students to learn about matters of personal, social, moral, and ethical significance” (Bishop & Harrison, 2021, p. 27). Using a framework for culturally and historically responsive literacy, Muhammad advocates in her groundbreaking text, Cultivating Genius (2019), for curriculum that provides middle grades students space to learn about matters of significance, to name and critique injustice and oppressive structures, and to develop their agency to cultivate a better world. In this essay, the authors discuss the possibilities and challenges that we – one a former interrelated resource teacher …

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Communicating Home During The Covid-19 Pandemic: Lessons Learned From A Middle Grades Speech Therapist, Kelsey Jenkeleit Dec 2022

Communicating Home During The Covid-19 Pandemic: Lessons Learned From A Middle Grades Speech Therapist, Kelsey Jenkeleit

Middle Grades Review

The COVID-19 pandemic changed how communication occurred between parents and teachers. This autoethnography focuses on my experiences as a middle grades speech therapist during the 2020-2021 school year, with a specific focus on parent-teacher communication. Using a Funds of Knowledge framework to help me analyze, understand, and describe communication data gathered over the course of the pandemic, I found that (1) communication increased during remote learning as more parents were home with their children; (2) the folding of work and home presented unique communication challenges, and (3) I felt a yearning for more communication to continue, especially after students returned …

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Understanding Middle School Teachers’ Levels Of Efficacy To Meet The Needs Of Young Adolescents, Erika Daniels Dec 2022

Understanding Middle School Teachers’ Levels Of Efficacy To Meet The Needs Of Young Adolescents, Erika Daniels

Middle Grades Review

Middle school students are in even more need of social and emotional support due to the cognitive, social, and emotional changes occurring at this stage of their development (Caskey & Anfara, 2014), and their teachers are key players in providing what is needed. Unfortunately, there are few Institutions of Higher Education that offer programs or coursework focused on young adolescents’ unique and specific needs (Howell, et al., 2016). This contrast with calls for school contexts that are intentionally designed to support young adolescents (Bishop & Harrison, 2021) and raises questions about whether and how middle school teachers are prepared to …

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Reported Benefits Of Yoga In Middle Schools: A Review Of The Literature, Paul Caldarella, Malka S. Moya Dec 2022

Reported Benefits Of Yoga In Middle Schools: A Review Of The Literature, Paul Caldarella, Malka S. Moya

Middle Grades Review

Middle school is a time of adjustments in youth: physical, intellectual, and social changes often result in stress. Middle school students are vulnerable to academic, behavioral, and mental health problems. Yoga is an Indian discipline practiced for health and relaxation. School-based yoga programs are becoming increasingly common given their potential benefits for students. We conducted a literature review of studies of middle school-based yoga programs, focusing on the reported benefits for students. We identified and retrieved 12 studies from electronic databases including Education Resources Information Center, PsycINFO, and Google Scholar that met inclusion criteria; (a) examined the benefits of yoga …

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“They Always Make It Right. We Can Do That For Everybody”: Young Adolescents Considering (In)Justice When Reading, Caleb Chandler, Kaitlin Wegrzyn Dec 2022

“They Always Make It Right. We Can Do That For Everybody”: Young Adolescents Considering (In)Justice When Reading, Caleb Chandler, Kaitlin Wegrzyn

Middle Grades Review

This paper draws on Bakhtin’s (1981) notions of discourse and ideological becoming to investigate how adolescents’ experiences with young adult literature and other texts might inform their thinking around issues of social justice. We engaged in a number of activities with the young adolescent participants: thought maps, illustrations of poignant scenes, written accounts of personal experiences, and focus group interviews. Using these activities as our data for this paper, we explain how the young adolescent participants called upon discourses of social justice to engage in the process of ideological becoming. Thus, the paper concludes that texts have the potential to …

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Critical Representation: Mattering & Belonging For Students Of The Global Majority, Rebecca E. Haslam Dec 2022

Critical Representation: Mattering & Belonging For Students Of The Global Majority, Rebecca E. Haslam

Middle Grades Review

Critical representation in literature and curricula requires an emancipatory agenda and examination of the ways in which people of diverse racial, cultural, linguistic, and other socially marginalized identities are portrayed, an assessment of how relevant, affirming, and accurate those representations are, and a consideration of the impact on a child’s sense of self and ‘other.’ This essay includes sample audit criteria for critical representation highlighting five sections: Storyline & Sense of Justice; Affirmation & Self-Worth; Relationships Among People; Author/Illustrator Background; and Language & Terminology, all with a focus on ‘mattering’ and holistic wellbeing of students of the global majority. Audit …

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Strengthening Middle Grades Education: Editorial Remarks, James F. Nagle, Penny A. Bishop Dec 2022

Strengthening Middle Grades Education: Editorial Remarks, James F. Nagle, Penny A. Bishop

Middle Grades Review

No abstract provided.

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Renewable Energy For Overcoming The Dilemma Of Darkness In Nigerian Urban Centers, Yeken A. Sanusi Dec 2022

Renewable Energy For Overcoming The Dilemma Of Darkness In Nigerian Urban Centers, Yeken A. Sanusi

CSID Journal of Infrastructure Development

Cities are unique centers of energy demand and greenhouse gas emissions. Although electricity provides multiple functions for urban residents, its supply in Nigerian urban centers is poor, and the attempts to understand this problem have been limited to national level. Therefore, this study aims to explore the dimensions of electricity supply problem; assess adaptations by households to inadequate electricity supply; examine the use of renewable energy-related facilities; and understand the perception of renewables by urban households, with five residential neighborhoods in Minna, the capital of Niger state, were covered. Data were collected using a questionnaire and the Facility Observatory Technique …

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Validating Financial Statement Comparability Assessment In Non-Profit Firms, Daniel Friesner, Andrew Brajcich Dec 2022

Validating Financial Statement Comparability Assessment In Non-Profit Firms, Daniel Friesner, Andrew Brajcich

The North American Accounting Studies

In a recent manuscript, Brajcich and Friesner (2022) proposed a new methodology to assess financial comparability in not-for-profit organizations. Their approach utilizes entropy-based information theory, and thus requires few prior assumptions about the formation and implications of financial statement comparability. This manuscript assesses the practical utility of the Brajcich and Friesner (2022) methodology by comparing its results to those generated by nonhierarchical cluster analysis. The analysis was conducted using balance sheets drawn from Washington State critical access hospitals in 2019, using a similar set of hospitals and an identical set of variables outlined in Brajcich and Friesner (2022). We find …

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History Of The Use Tax In The United States, Christopher Jones, Yuyun Sejati, Spencer Usrey Dec 2022

History Of The Use Tax In The United States, Christopher Jones, Yuyun Sejati, Spencer Usrey

The North American Accounting Studies

The use tax was developed by states to complement the sales tax. The aim was to prevent residents from being able to avoid paying the sales tax by simply going to a different state to make a purchase. Unlike the sales tax, which is collected by businesses at the point of sale, the use tax is self-reported by individuals. Since its inception in the United States in the 1930s, compliance with the use tax has been close to zero. This article examines the history of the use tax in the United States, including its original intent, enforcement issues, numerous court …

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The Global Mindset Of Accounting Educators - A National Study, Jill Christopher, Danielle Foster, Chao Wen, Perry Haan Dec 2022

The Global Mindset Of Accounting Educators - A National Study, Jill Christopher, Danielle Foster, Chao Wen, Perry Haan

The North American Accounting Studies

There is a mandate for business educators to cultivate Global Mindset in their students. In the accounting discipline, employers explicitly state that they seek job candidates who demonstrate a Global Mindset. To many educators in the U.S., developing Global Mindset in their students is a bewildering challenge because their own Global Mindset may be weak in some aspects, and widely used accounting textbooks fall short in presenting ideological, socio-political, and cultural perspectives alternative to that of Anglo-American capitalism. This study surveyed accounting educators from U.S. institutions to evaluate their Global Mindset, identify common weaknesses in their Global Mindset, and provide …

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Editor's Foreword, Essam Elshafie Dec 2022

Editor's Foreword, Essam Elshafie

The North American Accounting Studies

No abstract provided.

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Swallowing Function In Parkinson's Disease: Correlation With Disease Duration And Hoehn And Yahr Stage, Yi-Ya Pan, Hsueh-Pei Wang, Ruey-Meei Wu, Tyng-Guey Wang Dec 2022

Swallowing Function In Parkinson's Disease: Correlation With Disease Duration And Hoehn And Yahr Stage, Yi-Ya Pan, Hsueh-Pei Wang, Ruey-Meei Wu, Tyng-Guey Wang

Rehabilitation Practice and Science

Oropharyngeal dysphagia is a common complication of Parkinson's disease (PD). Swallowing assessment scales, videofluoroscopics wallowing study (VFSS), and fiberoptic endoscopic evaluation of swallowing (FEES) are used to evaluate the swallowing function of patients with dysphagia. However, few studies have been conducted that assessed tongue muscle strength and hyoid bone movement in patients with PD. To better understand the correlation between disease duration, Hoehn and Yahr (H&Y) stage and swallowing function in patients with PD, this study evaluated the swallowing function in patients with PD using ultrasonography and Iowa Oral Performance Instrument (IOPI). Ultrasonography was performed to evaluate hyoid movement, and …

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Enhancing The Professionalism Of Muslim Journalists In Handling Disinformation And Hoaxes During The Covid-19 Pandemic, Arba'iyah Satriani, Andalusia Neneng Permatasari, Firmansyah Firmansyah Dec 2022

Enhancing The Professionalism Of Muslim Journalists In Handling Disinformation And Hoaxes During The Covid-19 Pandemic, Arba'iyah Satriani, Andalusia Neneng Permatasari, Firmansyah Firmansyah

ASEAN Journal of Community Engagement

The term alternative media refers to media that serves as alternative sources of information in lieu of mainstream media. In contrast to social media, alternative media are mass media entities that carry out journalistic functions even though they are affiliated with community organizations. Thus, alternative media are expected to provide authentic news just like mainstream media in Muslim countries. Islamic alternative media are also required to produce quality news, and this was especially seen during the COVID-19 pandemic, when a flood of information resulted in confusion among the community. In response, training that aimed to enhance journalistic professionalism for practitioners …

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Learning Life Skills Through English Materials: Integrating Life Skills In English Pedagogy, Laela Hikmah Nurbatra, Masyhud Masyhud, Hartono Hartono Dec 2022

Learning Life Skills Through English Materials: Integrating Life Skills In English Pedagogy, Laela Hikmah Nurbatra, Masyhud Masyhud, Hartono Hartono

ASEAN Journal of Community Engagement

John Dewey once said that “education is not an affair of ‘telling’ and being told, but an active and constructive process.” Accordingly, pedagogical processes should not simply be conducted by traditional lecturing, but rather, they should be constructive processes that gradually build the meaning-making process of the children through their active participation. Therefore, this paper aims to suggest materials that integrate English learning and LSE that are specifically designed for Indonesian children. As a follow-up project from the previous program, the current community service focuses on the implementation of life skills education (LSE) by integrating LSE with English learning in …

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Exploring The Benefit Of Introducing Accounting And Finance Knowledge For Micro And Small Entrepreneurs During The Covid-19 Pandemic, Nurul Hidayah, Lucky Nugroho, Harry Suharman, Anees Janee Ali Dec 2022

Exploring The Benefit Of Introducing Accounting And Finance Knowledge For Micro And Small Entrepreneurs During The Covid-19 Pandemic, Nurul Hidayah, Lucky Nugroho, Harry Suharman, Anees Janee Ali

ASEAN Journal of Community Engagement

This study aims to explore the benefit of introducing the accounting and finance knowledge for micro and small business enterprises, in particular during the time of the coronavirus disease 2019. The COVID-19 pandemic has severely affected the micro and small enterprises. A large number of industries faced the risk of lower sales, which in turn badly hit their businesses. To assist micro and small business entrepreneurs in maintaining sustainability by improving their bookkeeping skills by using digital applications, a team of lecturers from Universitas Mercu Buana, Indonesia, and Universiti Sains Malaysia, Malaysia, collaborated on socialization activities and interactions. The lecturers …

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Foreword From Editor - 12th Edition, Yandi Andri Yatmo Dec 2022

Foreword From Editor - 12th Edition, Yandi Andri Yatmo

ASEAN Journal of Community Engagement

This edition of AJCE focuses on three main objectives of community engagements, running under the theme of literacy, creative innovation, and resilience. Covering these objectives, this edition consists of three research articles and five case-based articles written by authors from multi-nationalities. These authors' expertise spans across fields and industries, from communications, journalism, nursing, and economics; demonstrating various means of engaging with society informed by their respective backgrounds.

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Coconut Shell Waste Treatment Technology For A Sustainable Waste Utilization: A Case Study Of The Smes In Bohol Village, Indonesia, Wahyu Anggo Rizal, Ria Suryani, Roni Maryana, Dwi Joko Prasetyo, Diah Pratiwi, Yuli Ary Ratnawati, Dini Ariani, Andri Suwanto Dec 2022

Coconut Shell Waste Treatment Technology For A Sustainable Waste Utilization: A Case Study Of The Smes In Bohol Village, Indonesia, Wahyu Anggo Rizal, Ria Suryani, Roni Maryana, Dwi Joko Prasetyo, Diah Pratiwi, Yuli Ary Ratnawati, Dini Ariani, Andri Suwanto

ASEAN Journal of Community Engagement

This project focused on the introduction of liquid smoke and bio briquette manufacturing technology to small and medium enterprises (SMEs) located in Bohol Village, Gunungkidul, Indonesia through technology transfer, training, and mentoring. These SMEs are engaged in the food business with the main product jenang ketan, a traditional food from Gunungkidul, especially in Rongkop District, and very popular among communities around and outside Gunungkidul. The traditional preparation of jenang ketan produces several by-products in the form of waste, which is dominated by coconut shell biomass. The project’s technology transfer was carried out through the procurement of a series of pyrolysis …

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A Review Of Arctomecon Californica (Papaveraceae) With A Focus On The Species’ Potential For Propagation And Reintroduction And Conservation Needs, Alexander Stosich, Lesley A. Defalco, Sara J. Scoles-Sciulla Dec 2022

A Review Of Arctomecon Californica (Papaveraceae) With A Focus On The Species’ Potential For Propagation And Reintroduction And Conservation Needs, Alexander Stosich, Lesley A. Defalco, Sara J. Scoles-Sciulla

Monographs of the Western North American Naturalist

Las Vegas bearpoppy (Arctomecon californica) occurrences have fluctuated during the past several decades, in part due to interannual variability in rainfall that influences recruitment and mortality events; yet, development in the Las Vegas Valley continues to threaten habitat supporting this species. Arctomecon californica was petitioned for listing under the Endangered Species Act in 2019 and is currently under review to determine whether listing is warranted (USFWS 2020). This review updates species information for A. californica and includes recent insights into the species’ seed ecology, habitat requirements and suitability models, propagation and reintroduction, and pollinator biology. We include information …

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Difference On The Level Of Customer Satisfaction Among Private Senior High School Students In Calabarzon Before And After Putting A Price Discount Label On Binahiga’S Packaging, Josiah Keil S. Dinglasan, Max Alessandra B. Perez, Jhon Aerol E. Latina, Jean A. Mendoza Dec 2022

Difference On The Level Of Customer Satisfaction Among Private Senior High School Students In Calabarzon Before And After Putting A Price Discount Label On Binahiga’S Packaging, Josiah Keil S. Dinglasan, Max Alessandra B. Perez, Jhon Aerol E. Latina, Jean A. Mendoza

Sinaya: A Philippine Journal for Senior High School Teachers and Students

In this research study, implementation of price discount labels as a marketing strategy was assessed to identify the difference it makes to the level of customer satisfaction on the product Binahiga. The study aimed to address the identified research problem about the starting profitability of SEAty Co. An embedded design, covering a pre-test, an intervention, and a post-test, was conducted on a population of senior high school students. The respondents of the study were chosen through random sampling from a population. In the data analysis, quantitative data were analyzed through both descriptive and inferential analysis; mean and paired t-tests were …

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Ganglion Cyst Of Lumbrical Muscles: A Casereport, Pao-Sheng Wu, Chun-Te Lu, Valeria Chiu Dec 2022

Ganglion Cyst Of Lumbrical Muscles: A Casereport, Pao-Sheng Wu, Chun-Te Lu, Valeria Chiu

Rehabilitation Practice and Science

Ganglion cysts arising from joints or tendons are commonly seen in our daily work as physiatrists, but those originating from muscles have been infrequently reported. In this casereport, we present a patient with a ganglion cyst arising from the fascia of the fourth lumbrical muscle in an occupational therapist, which has never been reported before. The lumbrical muscles of the hand vary greatly from other intrinsic muscles, because of their distinctive structure and function. A ganglion cyst that arises from the lumbrical muscle is supposed to affect the precise movement of the occupational therapist's hand. As a result, the early …

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Herpes Zoster And Resultant Segmental Zoster Paresis: A Casereport And Literature Reviewarticle, Yen-Jou Ho, Hong-Yi Lin, Yao-Jen Chen Dec 2022

Herpes Zoster And Resultant Segmental Zoster Paresis: A Casereport And Literature Reviewarticle, Yen-Jou Ho, Hong-Yi Lin, Yao-Jen Chen

Rehabilitation Practice and Science

Herpes zoster (HZV) is ascribed to the reactivation of the dormant varicella-zoster virus (VZV) in the dorsal root ganglia. The most commonly seen manifestation is a painful skin rash. However, several additional complications have been documented in the literature. A less-mentioned yet severe complication is segmental zoster paresis (SZP), which can cause limb paralysis. SZP's mechanism is still under debate, and a direct invasion of motor fibers due to anatomical adjacency has been proposed. Here we report a patient who had sudden onset of left upper limb paresis and gradually developed a skin rash afterward, which a dermatologist confirmed as …

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Viscosity Of Commercial Thickeners In Combination With Different Beverages Of Honey- And Nectar-Like Consistency And Their Change Over Time, Wei-Chun Che, Yuan-Ching Tsai, Meng-I Kuo, Tsan-Hon Liou Dec 2022

Viscosity Of Commercial Thickeners In Combination With Different Beverages Of Honey- And Nectar-Like Consistency And Their Change Over Time, Wei-Chun Che, Yuan-Ching Tsai, Meng-I Kuo, Tsan-Hon Liou

Rehabilitation Practice and Science

Objective: This study investigated the viscosity of four beverages (green tea, grape juice, sugar-free soy milk, and Ensure®) thickened to a nectar- and honey-like consistency with five thickening products (Resource® Thickenup® Clear, Toromeal, Toromi-up, eNutrition, and Sentosa) marketed in Taiwan. The sample viscosity over time was compared. Furthermore, the results were compared with the guidelines of National Dysphagia Diet (NDD) established by the American Dietetic Association. Methods: The viscosity was measured using the Brookfield RVDV-II+ Pro viscometer with small sample adaptor, shear rate set at 50 s-1, temperature at 25℃. Results: The results showed that almost all thickening products in …

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Pengaruh Diaphragmatic Breathing Dan Endurance Exercise Terhadap Peningkatan Kapasitas Kardiorespirasi Pada Pasien Hospital-Acquired Pneumonia, Alifia Azzahra, Annisya Puspitarani, Zahra Sativani, Riza Pahlawi Dec 2022

Pengaruh Diaphragmatic Breathing Dan Endurance Exercise Terhadap Peningkatan Kapasitas Kardiorespirasi Pada Pasien Hospital-Acquired Pneumonia, Alifia Azzahra, Annisya Puspitarani, Zahra Sativani, Riza Pahlawi

Jurnal Fisioterapi Terapan Indonesia or Indonesian Journal of Applied Physiotherapy

The purpose of this case study is to determine the effect of diaphragmatic breathing and endurance exercise in hospital-acquired pneumonia (HAP). Nosocomial pneumonia that occurs in 48 hours or more after the patient admitted to the hospital, without any signs of pulmonary infection. The existence of clinical manifestations that appear, patients with HAP tend to avoid physical activity which can decrease the functional capacity of the respiratory system and have an impact on decreasing endurance. Diaphragmatic breathing exercise is thought to be able to help reduce shortness of breath, reduce the work of the accessory muscles of breathing, improve breathing …

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Symptomatic Os Supranaviculare Incidentally Found In A Professional Baseball Player: A Casereport, Xuan-Er Shen, Hao-Hong Cai, Chuan-Chao Lin Dec 2022

Symptomatic Os Supranaviculare Incidentally Found In A Professional Baseball Player: A Casereport, Xuan-Er Shen, Hao-Hong Cai, Chuan-Chao Lin

Rehabilitation Practice and Science

Background: Os supranaviculare is a rare skeletal anatomical variation with a prevalence of approximately 1%. Most patients are asymptomatic. Typically, os supranaviculare is discovered incidentally after an ankle injury or when os supranaviculare causes symptoms such as pain during activities or swelling of the ankle,. Os supranaviculare is often misdiagnosed as a stress fracture of the navicular bone or talus. Careful differential diagnosis should be considered to avoid mistreatment. casereport: A 24-year-old male athlete, who is an active Chinese Major League Baseball player, complained of swelling and pain on the dorsomedial side of his left ankle for about six months. …

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Manufacturing Of Instrument Structures From Formed Silicide Films, I R. Bekpulatov Dec 2022

Manufacturing Of Instrument Structures From Formed Silicide Films, I R. Bekpulatov

Technical science and innovation

This work provides information on the formation of the main part of thermal radiation receivers. In addition, the article defines and creates optimal modes for creating targets for magnetron sputtering from higher manganese silicide (Mn4Si7) and cobalt monosilicide (CoSi). As is known, the device is formed from a two - type film, where the Mn4Si7 film gives the p - type, and the CoSi film gives the n - type. Films were formed using these targets by magnetron sputtering and their electrophysical properties were studied. The results obtained showed that the resulting films …

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Analysis Of Methods Of Construction And Application Of Modern Anti-Radar Missiles, A S. Solonar, P A. Khmarski, B M. Mukhammedov, G Sh Tuganov Dec 2022

Analysis Of Methods Of Construction And Application Of Modern Anti-Radar Missiles, A S. Solonar, P A. Khmarski, B M. Mukhammedov, G Sh Tuganov

Technical science and innovation

The analysis of methods of construction and application of modern anti-radar missiles (ARM) is carried out. The analysis allowed us to identify the most distinctive features of ARM such as: high flight speed (600-1200 m/s), limited launch range, different flight paths and it is oriented towards the attacked radar, small effective distribution surface (ESR), due to a sharp increase in the weight and size characteristics of the homing head of the homing head outside the frequency range (from 0.5 to 40 GHz), radio electronic means of the ARM are not created, the large range and high speed of tuning the …

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Formation Of A Geological Model Of Oil And Gas Fields Based On New Geological And Geophysical Data (By The Example Of The Kultak Field), D A. Akhmedova, O A. Karshiev, E T. Matkarimov, A A. Elomonov, U B. Fayzullaev Dec 2022

Formation Of A Geological Model Of Oil And Gas Fields Based On New Geological And Geophysical Data (By The Example Of The Kultak Field), D A. Akhmedova, O A. Karshiev, E T. Matkarimov, A A. Elomonov, U B. Fayzullaev

Technical science and innovation

The article presents the results of building a geological model of oil and gas fields based on new geological and geophysical data on the example of the Kultak field. Using the Schlumberger-Petrel software package, it is recommended that to build permanent models of oil and gas fields, a geological model was built.

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Research Of Factors Affecting The Efficiency Of Rock Breaking Equipment, J A. Tursunov, R U. Jurayev Dec 2022

Research Of Factors Affecting The Efficiency Of Rock Breaking Equipment, J A. Tursunov, R U. Jurayev

Technical science and innovation

Nowadays 35-40 % of all the drilling works, performed on mining and geological exploration enterprises, are made by air bottom hole cleaning, and the rest 60-65 % are made by flushing liquids on water base. Air drilling and bottom hole cleaning due to low heat conductivity of air generates high temperature at a borehole bottom thus negatively affecting the efficiency of rock destruction tool; while drilling with water based flushing fluids causes efficiency reduction of rock destruction tool due to formation of slurry mode at a borehole bottom. This paper presents the results of the study of the factors negatively …

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