bluuebunny/crossref_metadata_2025 huggingface dataset:
36. KẾT CỤC SƠ SINH Ở THAI PHỤ ỐI VỠ NON TẠI BỆNH VIỆN PHỤ SẢN HÀ NỘI
Authors: Hà Nguyễn Thị Thu , Đạt Đỗ Tuấn
Published: May 2024

Mục tiêu: Mô tả kết cục sơ sinh ở thai phụ có ối vỡ non có tuổi thai từ 24-34 tuần tại Bệnh viện Phụ Sản Hà Nội.
Đối tượng và phương pháp: Nghiên cứu mô tả cắt ngang hồi cứu trên 217 thai phụ ối vỡ non có tuổi thai từ 24 tuần 0 ngày đến hết 33 tuần 6 ngày tại bệnh viện Phụ sản Hà Nội từ tháng 01/2022 đến tháng 12/2022.
Kết quả: Tuổi trung bình của thai phụ là 30.1±6.1. Ối vỡ non thường gặp ở nhóm thai phụ có tiền sử mổ đẻ cũ (33,2%), tiền sử nạo phá thai (20,7%), sảy thai, thai lưu (15.6%). Thai có cân nặng từ 1500-2500gr chiếm tỷ lệ cao nhất (70.5%). 100% trẻ cân nặng <1000gr Apgar phút thứ nhất <7 điểm. Chỉ số ối càng thấp thì tỷ lệ Apgar phút thứ nhất thấp càng cao. 100% trẻ sinh ra dưới 1500g và 94% trường hợp hết ối phải hồi sức sơ sinh. 88.9% trẻ được đưa vào hồi sức sơ sinh: 44.2% thở áp lực dương liên tục NCPAP. Có 43 trẻ sơ sinh không sử dụng kháng sinh (20.7%). 5 trường hợp nặng chuyển viện Nhi điều trị (2.4%). Tử vong sơ sinh chiếm 7.8%, đa số là rất non tháng (24-28 tuần).
Kết luận: Thai có cân nặng chủ yếu tử 1500-2000g. Cân nặng và chỉ số ối ảnh hưởng tới chỉ số Apgar phút thứ nhất. Trường hợp trẻ <1500g và hết ối khi sinh hầu hết phải hồi sức sơ sinh. Tỷ lệ nhỏ chuyển viện Nhi điều trị. Các trường hợp tử vong sơ sinh đều là thai rất non tháng (24-28 tuần).
Geld an der Grenze
Authors: Suter Mischa
Published: May 2024

»Geld, so will es eine eingeschliffene Vorstellung, ist ein großer Gleichmacher, es bringt Ungleichartiges auf denselben Nenner, es ebnet ein, es fungiert als allgemeines Äquivalent.« Aber was geschieht, wenn wir Geld anders betrachten, nämlich als Medium von Konflikten? In seiner umfassenden Studie historisiert Mischa Suter die politischen Funktionen des Geldes und wirft Schlaglichter auf markante Konstellationen im Kapitalismus um 1900: auf den Diskurs um den Wucher in den 1870er-Jahren im Habsburger Reich und in Deutschland, der zum Katalysator für einen neuartigen politischen Antisemitismus wurde; auf die imperialen Auseinandersetzungen um die Einführung des Goldstandards Ende des 19. Jahrhunderts; auf die von Straßenprotesten begleitete Währungsstabilisierung in der großen Inflation nach dem Ersten Weltkrieg – und darauf, wie die Einführung einer Bargeldökonomie in den deutschen Kolonien die Grundlage für die rassistische Herrschaft stellte. Mischa Suter macht anschaulich, inwiefern in der Definition von Werten immer auch Fragen der Gesellschaftsordnung mitschwingen – und formuliert heute, da wir an der Schwelle zu einem neuen monetären Zeitalter stehen, dringende Fragen: War das Geld zu jeder Zeit neutral, einheitlich und fungibel? War es tatsächlich je das Mittel, das Werte transparent machen konnte?
Some properties of weak* Dunford-Pettis operators on Banach lattices
Authors: Boumnidel Sanaa , El Kaddouri Abdelmonaim , Aboutafail Othmane , Bouras Khalid
Published: May 2024

We study relationships between the class of weak* Dunford-Pettis operators and other classes of operators like unbounded absolutely weakly Dunford-Pettis, weak Dunford-Pettis, and Dunford-Pettis operators.
An Elementary Proof of the Transformation Formula for the Dedekind Eta Function
Authors: Kong Ze-Yong , Teo Lee Peng
Published: May 2024

In this work, we give an elementary proof of the transformation formula for the Dedekind eta function under the action of the modular group $\text{PSL}\,(2,\mathbb{Z})$. We start by giving a proof of the transformation formula $\eta(\tau)$ under the transformation $\tau\to -1/\tau$, using the Jacobi triple product identity and the Poisson summation formula. After we establish some identities for the Dedekind sum, the transformation formula for $\eta(\tau)$ under the transformation induced by a general element of the modular group $\text{PSL}\,(2,\mathbb{Z})$ is derived by induction.
Maxillary Odontogenic Keratocyst Superimposed by Infection: Case Report
Authors:   The National Ribat University, Sudan., Mahjoub Shaza Babiker Mohammed
Published: May 2024

Odontogenic Keratocysts (OKCs) are rare cystic lesions known for their aggressive behavior and tendency to recur after excision. These benign tumors usually occur in the mandible or maxilla and are believed to arise from the dental lamina. The medical community is still debating whether these lesions are developmental or neoplastic [1]. However, most experts agree that they are locally aggressive and require prompt treatment to avoid complications. On imaging, they typically appear as a solitary unilocular lesion that extends longitudinally in the posterior portions of the mandible. Although most are solitary, multiple odontogenic keratocysts can also be present in some cases, and an associated condition such as basal cell nevus syndrome should be considered. It’s worth noting that involvement of the maxillary sinus by OKC is rare, but it can happen [2]. The maxillary sinus is part of the paranasal sinuses, which are in proximity to developing tooth and root apices of premolar and molars. The overlapping of various structures makes it challenging to diagnose such lesions via maxillary radiographs. Therefore, prompt diagnosis and treatment of OKCs is essential to prevent further complications [3].
Navigating the complexities of partial androgen insensitivity syndrome: A comprehensive case study
Authors:   Medical Student, B J Med College and New Civil Hosp, Ahmedabad, Gujarat, India., DJ Govani , I Zaparackaite ,   Dept of Ped Surgery, Emergency’s Children’s Surg Hosp, Entebbe/ Evelina Children’s Hosp, London., SJ Singh ,   Department of Pediatric Surgery, Nottingham University Hospitals, Nottingham, UK., D Bhattacharya ,   Department of Pediatric Surgery, Sultan Qaboos Hospital, Salalah, Sultanate of Oman., KB Swamy ,   Lincoln University College, Lincoln University, Kuala Lumpur, Malaysia., RC Correia ,   Santa Casa de Tatui Gen Hospital, 330 Maneco Pereira Road, Tatui 18273000, Sao Paulo, Brazil., PK Midha ,   J. Watumull Global Hospital & Research Centre, Delwara Road, Mount Abu, Rajasthan, India affiliated to Medical Faculty of God Fatherly World Spiritual University, Mount Abu, Rajasthan., RV Patel ,   Departments of Pediatrics and Ped Surgery, Postgraduate Institute of Child Health & Research and KT Children Govt University Teaching Hospital, Rajkot 360001, Gujarat, India.
Published: May 2024

Partial Androgen Insensitivity Syndrome (PAIS) is a rare genetic disorder that poses unique challenges in clinical management. This case study delves into the clinical presentation, diagnostic journey, and management of a patient diagnosed with PAIS. The complexities of androgen receptor dysfunction and its impact on sexual development are explored, providing valuable insights for clinicians and researchers alike.
Birth after Caesarean Section: A Retrospective Audit of 10 Years of State-Wide Data
Authors:   pswich Hospital and University of Queensland, Ipswich, Queensland, Australia., Harrison Cassandra , Ibiebele Ibinabo ,   University of Sydney, NSW, Australia., Mahomed Kassam ,   pswich Hospital and University of Queensland, Ipswich, Queensland, Australia.
Published: May 2024

Rates of Caesarean Section (CS) have been increasing worldwide with varying rates of [5] percent in Sub-Saharan Africa to 43 percent in Latin America and the Caribbean [1]. In Australia too rates have increased from 32 percent in 2011 to 38 percent in 20212. Attempts have been made to seek ways at slowing the rise in rates of CS but with little success [3]. Women who have had a previous CS may elect to have a Elective Repeat CS (ERCS) or have an attempt at a Vaginal Birth (VBAC) in their subsequent pregnancy. A planned VBAC, considering the woman’s individual history and needs, is viewed as a safe option for many women with a single previous lower segment caesarean section [4]. Studies have shown that a Trial of Labour (TOL) ending in a VBAC is most favourable for the mother, newborn, and the health service [5,6]. Likelihood of success rates are reported to be between 60 and 80 percent [7]. A recent meta-analysis [8] noted successful vaginal birth rates of 74.3 percent if labour was spontaneous and 60.7 percent if induced. Achieving successful VBAC has also been reported to be less expensive and more effective than undergoing an ERCS [9,10]. There has recently been an international multi-centre trial that aims to increase the proportion of women having VBAC by increasing woman-centred care and facilitating women’s empowerment in their choice of birth in three countries – Germany, Ireland and Italy [1]. An attempt at vaginal birth is also supported by various colleges across countries [4,7,12]. One of the reasons for the preference of ERCS may be a concern of a failed trial at vaginal birth resulting in an emergency CS. In one study of 29 352 women who attempted a vaginal birth after CS compared to 169 377 women without previous CS, Odds Ratio (OR) for emergency CS was 3.65 (CI: 3.26-4.08) higher when compared to women without previous CS [13]. The scibasejournals.org aim of this retrospective study however was to use a large dataset with a specific objective to report on the success and failure rate and to identify any specific predictors of a successful or an unsuccessful vaginal birth in women who are pregnant after one previous CS.
Ruptured Ectopic Pregnancy with IUD in Situ
Authors:   Mid and Southern Essex University Hospitals Group, Southend University Hospital, Prittlewell Chase, Westcliff-On-Sea, Essex, SS0 0RY, UK., Verma Arun James; Pragya , Hussain Munawar ,   Mid and Southern Essex University Hospitals Group, Southend University Hospital, Prittlewell Chase, Westcliff-On-Sea, Essex, SS0 0RY, UK.
Published: May 2024

An ectopic pregnancy is any pregnancy which has implanted outside of the womb. There are several types of ectopic pregnancies for example tubal, cervical, ovarian. Ectopic pregnancies can also implant on caesarean scars. The most common sites for implantation of an ectopic pregnancy are the fallopian tube (97%), followed by the ovary (3.2%) and the abdomen (1.3%) [1]. Ruptured ectopic pregnancies pose high risk of mortality and morbidity to the patient [2]. This is because of possibility of rupture, intraperitoneal bleeding and subsequent haemodynamic instability of the patient. According to NICE CKS, in the UK, an estimated 12,000 ectopic pregnancies are diagnosed each year [3]. In the UK, 1 in
Implementing Artificial Intelligence in Salon Management: Revolutionizing Customer Relationship Management at PK Salon
Authors: Akshay Agarwal,
Published: May 2024

Aim: This study aims to explore the implementation of artificial intelligence-driven customer relationship management (CRM) within the framework of PK Salon Management, investigating both the practical aspects and the challenges and opportunities associated with integrating artificial intelligence into the salon business.
Methods: A qualitative research approach, primarily relying on secondary research methods, was employed to gather insights into the adoption of artificial intelligence in PK salons. Literature reviews and case studies related to artificial intelligence in salon management were examined and synthesized. Additionally, interviews with salon partners provided valuable perspectives on the practical implications of artificial intelligence adoption.
Results: Evaluation findings indicate that PK Salons are actively embracing automation in appointment scheduling and marketing, alongside increased investment in artificial intelligence applications. However, challenges such as data security concerns and workforce readiness have been identified as barriers to effective integration. Qualitative experiences underscore the importance of overcoming implementation challenges while harnessing artificial intelligence's potential to enhance operations and improve customer engagement.
Conclusion: Artificial intelligence-powered CRM systems hold significant potential to revolutionize salon management within the PK Salon context. Addressing challenges such as cost assessment and data security requires proactive measures and collaboration among stakeholders. By fostering a culture of innovation and investing in workforce training, salon establishments can leverage artificial intelligence technology to deliver enhanced customer experiences and gain a competitive edge in the market.
Scenario-Based Comparison of Sustainable Heating and Cooling Systems for Piglet Production Systems
Authors: König Konstantin , Pag Felix , Vajen Klaus
Published: May 2024

Industrial pig farming is a highly energy-intensive activity due to the susceptibility of extensively bred pig breeds. To ensure efficient production, optimal climatic housing conditions are necessary. In this context, reducing CO2 emissions requires maximizing efficiency in heating and cooling provision, including a significant renewable energy component. However, pig farmers face a perpetual demand to refine their production methodologies due to evolving regulatory standards and market demands. This demand influences the efficacy of existing heating and cooling strategies. To address these challenges, a comprehensive case study was undertaken at a sizable piglet farm to devise a methodology that facilitates the projection of annual heating and cooling load profiles. This methodological framework is suitable for use in similar agricultural settings with comparable operational constraints. The proactive projection of heating and cooling load profiles constitutes a foundational step in evaluating potential heating and cooling systems with regard to their energy utilization, financial viability, and carbon footprint. Central to this evaluation are the comparative analyses of heating systems such as biogas and heat pumps, alongside cooling systems exemplified by compression chillers and absorption chillers.
Why the hexagon of opposition is really a triangle: logical structures as geometric shapes
Authors: Milstein Ori
Published: May 2024

This paper suggests a new approach (with old roots) to the
study of the connection between logic and geometry. Traditionally, most logic diagrams associate only vertices of shapes with propositions. The new approach, which can be dubbed ’full logical geometry’, aims to associate every element of a shape (edges, faces, etc.) with a proposition. The roots of this approach can be found in the works of Carroll, Jacoby, and more recently, Dubois and Prade. However, its potential has not been duly appreciated, probably because of the complexity of the diagrams in these works. The following study demonstrates how the Hexagon of Opposition can be represented as a triangle and Classical Logic as a tetrahedron (rather than a rhombic dodecahedron). It then applies the approach to modal logic, extending the tetrahedron for the logic KT into a dipyramid and a cube for KD, and finally an octahedron for K. Some possible directions for further research are also indicated.
Exploring EFL Teachers' Perceptions of Action Research in Two Public Universities in Saudi Arabia
Authors: Moahmmed Alwafi Maram , Alkubaidi Miriam
Published: May 2024

This study aimed to examine the knowledge, practice, and obstacles of action research (AR) among English as a foreign language (EFL) teachers at two public universities in Saudi Arabia. To achieve this aim, the study employed a quantitative research design using an online questionnaire. The data was collected from 96 EFL teachers working at English language institutes of two public universities in Saudi Arabia. The findings of the study revealed that most EFL teachers were familiar with AR, and the knowledge of AR was widespread among the participants. On the other hand, the findings showed deficiency in the practice of AR among EFL teachers. The findings also revealed that time and lack of training in AR were the most significant obstacles that hindered EFL teachers from conducting AR. Based on these findings, the study offered practical implications and recommendations for promoting the practice of AR among EFL teachers.
A Case Study of Culturally Responsive Evaluation
Authors: Lin Su-Ching
Published: May 2024

This study applied a culturally responsive evaluation (CRE) to assess the impact of a multidisciplinary project-based learning(MdPjBL) program on students in two junior high schools with different cultures and contexts. Case A was located in an urban area, and the participants included five teachers acting as evaluators and 93 eighth graders, with 49 and 44 assigned to the experimental and control groups, respectively. Case B was located in an aboriginal area and included three teachers and 17 eighth graders as participants. This study used a mixed research design, applying the following approaches to collect data during program implementation: Critical Thinking Scale, Communication Scale, Creativity Scale, Collaboration Scale, Problem-solving Scale, Technological Application Scale, and students' project work outcomes. The findings indicated that (1) compared with traditional pedagogy, MdPjBL pedagogy positively impacted students’ capacities for 5Cs and technology application; (2) based on post-test results, MdPjBL pedagogy had a more positive impact on students’ capacities for 5Cs and technology application than traditional pedagogy; and (3) cultural differences among students led to different visual styles, storylines, and ways of conveying project research outcomes.
Harnessing State Longitudinal Data Systems to Access Career and Technical Education Outcomes
Authors: Pfeiffer Jay , Klein Steve
Published: May 2024

Students participating in career and technical education (CTE) programming must complete years of technical coursework to acquire the advanced skills, credentials, and degrees necessary for workforce success. Statewide longitudinal data systems (SLDS) offer researchers access to a range
of individual student recordlevel data that can be used to assess student's in-school experiences, the outcomes they achieve, and the transitions they make across educational levels and into the workforce. This paper serves as a primer for researchers interested in harnessing SLDS to explore
the contribution that CTE makes in preparing youth and adults for career success. It defines terminology unique to CTE programming; describes how CTE students are classified and the distinctions among them; reviews student demographic and special population classifications specified in federal
legislation and issues associated with their measurement; describes metrics of student success widely used in the field; and data governance, data matching, and student privacy considerations that arise in tracking individuals as they transition across education and into the workforce. The
paper closes with recommendations to strengthen SLDS capacity for use in CTE research.
Perceptions of Race in Career and Technical Education: Moving Toward Critical Consciousness
Authors: Thompson Corliss B. , Stoddard Ellen W. , White Shariva D. H.
Published: May 2024

Career and technical education (CTE) gives students access to skill development and greater economic opportunity, but challenges in the CTE system are pervasive for students of color, specifically Black and Latinx students. This study examines Black and Latinx high school student and
teacher experiences with race in a profession-based learning program that awards CTE credits. This basic qualitative study is built around a conceptual framework that examines what racism is in CTE, how it creates barriers for people of color and how activating sociopolitical consciousness
of students and teachers may enhance student agency. Findings reveal student and teacher perspectives defining race as skin color, strong beliefs in meritocracy, and individualized approaches that lead to a lack of awareness of systemic racism. Teachers play a critical role in supporting students
through challenges, but they stop short of using their positions to elevate those challenges toward more meaningful systemic change. The recommendations for CTE programs are (a) examine the ability of students and teachers to identify and discuss barriers that exist because of race and (b)
take action to increase sociopolitical awareness and critical consciousness.
How multi-level governance frameworks assist community colleges in identifying education-related sustainable development goals
Authors: Matu Jeffrey Ben
Published: May 2024

Promoting inclusive and equitable postsecondary learning environments is a global priority Postsecondary institutions, particularly community colleges' career and technical education (CTE) programs, are increasingly held accountable for achieving education-related sustainable development
goals (SDGs) and are expected to provide knowledge of the SDGs and implement them through practice and action. Community colleges rely on multi-level governance frameworks such as voluntary local review (VLR) to substantiate and institutionalize education-related SDG objectives. Though the
VLR has been identified as a process for facilitating multi-level collaborative learning, the nature and process of implementing the approach has not been clearly defined and is not well understood. To identify key concepts and main research themes that present sustainability education and
inclusive and equitable learning in community colleges, as well as to identify research gaps, a systematic literature review on sustainability education in workforce education and development (WFED) as well as inclusive and equitable learning in community colleges was conducted. The review
found that VLR is critical for obtaining new knowledge about education-related SDGs and suggests that community colleges use the VLR to improve organizational contextual features and organizational change, internal structural features and organizational design, and external environment and
influencing factors.
An Historical Look at the Future of Career and Technical Education and Research
Authors: Rojewski Jay W.
Published: May 2024

Issues likely to impact the future of Career and Technical Education (CTE) research are discussed. The implications inherent in underlying assumptions and current issues that shape CTE practice and scholarship are also identified. Existing and projected changes to work and society provide
clear direction to CTE practice and scholarship for meeting future work preparation needs. However, select challenges facing the CTE research community must be acknowledged. While not a fool's errand projecting future needs is fraught with peril and should be done so with caution and perspective.
Even so, the changing nature of work and society require CTE scholars to be proactive and engage in thoughtful study of how to best prepare individuals for success in work and life.
Secondary Non-Traditional, Urban Agriculture Students of Color and Their Motivation to Stay in Agriculture: A Study of Retention
Authors: Hand Callan , Croom D. Barry , Anderson James C. , Yopp Ashley M. , Golson Aaron
Published: May 2024

This study describes the internal values that motivate non-traditional urban agriculture students to stay in the field and the external factors influencing the motivation of non-traditional urban agriculture students to remain in the field of agriculture. A phenomenological approach
was employed to gather information on student motivation, engagement, background, knowledge, lived experiences, and post-graduation plans. The findings suggest that urban students of color have a favorable opinion of agriculture when provided with a systematic course of instruction in the
agricultural sciences, particularly when the learning experiences align closely with their academic and career interests. However, it was concluded that while instruction in the agricultural sciences and positive agricultural youth organization experiences contribute to a positive perception
of the agriculture industry, they do not necessarily lead to a career preference for agriculture among urban students of color. Urban students of color viewed local agricultural youth organization experiences favorably. However, they perceived that the FFA Organization above the school level
is not inclusive of urban students of color. Finally, agriculture teachers, mentors, and role models support positive academic performance and career development choices in urban students of color.
Facilitator Stem Teacher Identity Development Via Online Informal Stem Education During the (COVID)- 19 Era
Authors: Carroll Turhan K. , Nutwell Emily C. , Christy Ann D. , Bennett Michael B. , Finkelstein Noah D.
Published: May 2024

Informal STEM education (ISE) programs are known to foster heightened student engagement due to leveling the student-teacher hierarchy, free choice, self-directed learning experiences, and hands-on pedagogies. ISE has also been shown to be effective in helping to prepare the K-12 STEM
teacher workforce by fostering STEM teacher identity. The COVID-19 pandemic forced most ISE programs to move their activities to virtual formats which changed the ways facilitators provide meaningful informal STEM learning for students, and as such, moving online had implications for how their
STEM teacher identity developed. The objective of this study is to examine the role that COVID-19 mandated virtual learning played in the STEM teacher identity development of facilitators in an ISE program which had historically been offered in-person. Using a naturalistic inquiry design,
we identified three themes that contextualize the STEM teacher identity development for 5 facilitators participating in online ISE: (1) Navigating Difficulties Engaging Students; (2) Building Bonds; and (3) Perspective Taking. This paper concludes by discussing implications these themes have
for informal STEM programs, online ISE educators, and the environments supporting ISE educators going forward in supporting CTE teachers??? STEM teacher identity.
VTE Student Burnout from (Covid)-19 Pandemic: Exploring Student and Family Risk and Protective Factors
Authors: Li Gen , Jing Xilong , Tan Tony Xing , Ban Hongyan
Published: May 2024

Due to China???s three years of ???Zero Covid??? containment policy, the vast majority of vocational and technological education (VTE) high school students could not participate in work-based learning, had to take classes online, and often were isolated from their families. Although
the impact of the unprecedented disruptions of the Covid-19 pandemic on students??? wellbeing has been well documented, little is known about the experiences of vocational and technical high school students whose vocational identity development depends heavily on work-based learning experiences.
In the following study, we applied a risk and resilience framework to examine Chinese VTE student burnout following the exposure to the ???Zero Covid??? policy for their entire high school career. Specifically, we tested how variations in Chinese vocational and technical high school students???
perceived impact of the Covid-19 pandemic, career adaptability, psychological capital, academic performance, and parental career guidance were related to differences in their sense of burnout. Regression results showed that paternal education level and perceived impact of Covid-19 pandemic
positively and significantly predicted burnout, while academic performance and parental career support negatively and significantly predicted burnout. Age, sex, internship participation, career adaptability and parental career interference and parental lack-of-engagement did not predict burnout.
Overall, the variables accounted for 53.6% of the variance in student burnout.
ЗАМКНУТАЯ СИСТЕМА ВОДОСНАБЖЕНИЯ РЫБОХОЗЯЙСТВЕННЫХ ПРЕДПРИЯТИЙ
Authors: Тадевосян А.В.
Published: May 2024

Рыбная отрасль стала одним из приоритетных направлений для Армении, в частности для районов Араратской долины, где используются артезианские воды. Это, в свою очередь, приводит к истощению подземных артезианских вод и загрязнению надземных вод (в частности, вод реки Аракс). Для решения этих проблем необходимо использовать хозяйства, работающие по системе замкнутого водоснабжения.
Замкнутая система водоснабжения – это система промышленного водоснабжения и водоотведения, в которой многократное использование воды в одном и том же производственном процессе осуществляется без сброса сточных вод в природные водоемы. Такая система обеспечивает экономию свежей воды и практически исключает загрязнение окружающей среды. При эксплуатации установок с замкнутым циклом водоснабжения на первый план выходит процесс очистки воды. Продукты жизнедеятельности рыб, являющиеся токсичными, вместе с другими загрязнителями (гниение водорослей, остатки пищи) нарушают баланс между необходимым количеством кислорода и количеством образовавшихся газов, что пагубно влияет на жизнедеятельность рыб.
В Национальном политехническом университете Армении разработана установка замкнутого водоснабжения рыбохозяйственных производств, где очистка загрязненной воды проводится двухстадийно: на первой стадии осуществляется очистка от грубых частиц, а на второй стадии - очистка от растворенных веществ. В качестве очистителей используются речная галька, вспученный перлит, травертин и клиноптилолит.
КОЖУРА ГРАНАТА КАК ЭФФЕКТИВНЫЙ АДСОРБЕНТ ДЛЯ ИЗВЛЕЧЕНИЯ ФУРФУРОЛА ИЗ ВОДНЫХ РАСТВОРОВ
Authors: Петросян М.З. , Погосян И.М. , Галоян А.М.
Published: May 2024

Продолжены исследования по изучению адсорбции фурфурола из водных растворов сорбентами, полученными на основе кожуры граната. Показано, что кожура граната, обработанная пирофосфорной кислотой (модифицированная), и кожура, обработанная фосфорной кислотой, имеют одинаковую адсорбционную способность. Применение пирофосфорной кислоты объясняется тем фактом, что в водной среде ранее применяемая фосфорная (ортофосфорная) кислота частично превращается в пирофосфорную. Сделано предположение, что пирофосфорная кислота в водных растворах при обработке кожуры граната проявляет те же свойства, что и фосфорная кислота.
Кожура граната является важным очищающим агентом сырой нефти от ряда нежелательных веществ. Фурфурол применяют также на предприятиях нефтехимической промышленности как растворитель для экстракции диенов из смеси углеводородов. Очистка фурфурола из водных растворов имеет важное значение для удаления этого довольно токсичного вещества из экосистемы. В настоящее время его широко применяют и для получения твёрдых смол по реакции с фенолом и ацетоном, или с мочевиной.
Содержание фурфурола в водных растворах до и после адсорбционной очистки осуществлено методами ультрафиолетовой спектрофотометрии в области 290…295 нм, а также высокоэффективным жидкостным хроматографом. Установлено, что процесс адсорбции фурфурола биосорбентом – размельченной кожурой граната - описывается уравнением изотермы Ленгмюра. Использование модифицированной кожуры граната дает минимизацию экономических и экологических рисков по сравнению с получением активированного угля из той же кожуры.
Показано, что модифицированная кожура граната имеет адсорбционную активность выше примерно в два раза, чем активированный уголь из той же кожуры.
ЗАКОНОМЕРНОСТИ СОПРЯЖЕННОГО ГЕТЕРОФАЗНОГО ХИМИЧЕСКОГО ПРЕВРАЩЕНИЯ СУЛЬФАТА МЕДИ МЕТОДОМ ВОЗДЕЙСТВИЯ ЦЕПНЫМИ ГАЗОФАЗНЫМИ РЕАКЦИЯМИ
Authors: Манташян К.А. , Манташян А.А.
Published: May 2024

Изучены химические превращения типично ионного соединения – сульфата меди (II) – в условиях воздействия цепной газофазной реакции окисления углеводородов (режим ВЦР). Обнаружены закономерности, указывающие на нетривиальные и сложные принципы (механизм) протекания гетерофазных процессов превращения неорганических соединений в условиях ВЦР. Процесс изучался в проточном режиме осуществления цепной газофазной реакции окисления пропан-н-бутановой смеси в цилиндрическом кварцевом реакторе с помещенным внутри образцом безводного CuSO4. Опыты проводились в широком диапазоне параметров: температуры, времени контакта газофазной реакции (скорости потока), объемного соотношения углеводорода (RH) и кислорода (O2) в исходной газовой смеси (RH:O2), времени экспозиции. В первой части работы экспериментальные результаты и их обсуждение относятся к взаимодействию CuSO4 только с углеводородными газами (нецепное превращение). Во второй части представлены результаты и выводы, относящиеся к процессу воздействия на CuSO4 цепной газофазной реакции окисления углеводородов (цепное сопряженное превращение CuSO4), а также сравнение и анализ закономерностей двух изученных процессов. Показано, что при воздействии цепной химической реакции CuSO4 подвергается интенсивному превращению, вплоть до восстановления в металлическую медь в виде тонкодисперсного порошка. Осуществление процесса методом ВЦР характеризуется существенно пониженными температурами и высокими скоростями протекания реакций, по сравнению с процессом превращения CuSO4 при воздействии только углеводородными газами. Энергия активации процесса при ВЦР-режиме составляет: EВЦР63 кДж/моль, тогда как при воздействии только углеводородом – ERH135 кДж/моль. Расчетами показано, что химические взаимодействия CuSO4 с углеводород-кислородными смесями, реагирующими по цепному механизму, оказываются термодинамически также наиболее выгодными. Установлено, что в зависимости от условий процесса, продуктами превращения могут быть (в том числе селективно): Cu, Cu2O, CuO, 2CuCO3∙Cu(OH)2 с определенными кристаллическими структурами. Определяющее воздействие на ход гетерофазного превращения оказывают параметры, свойственные реакциям, протекающим по цепному механизму, такие как соотношение газофазных реагентов, время контакта и др. Продукты превращения CuSO4, полученные в определенных режимах ВЦР-процесса, обладают парамагнитными свойствами, что может быть использовано для их применения в различных целях (например, при катализе), а также свидетельствует о сложном характере данного радикально-цепного сопряженного процесса.
CONCEPTUAL DESIGN AND BIO-INSPIRED CONTROL OF A NEW SURGICAL SOFT ROBOTIC GRIPPER
Authors: Zakaryan N.B. , Harutyunyan M.G. , Sarkissyan Yu.L.
Published: May 2024

This paper describes the design and development of a novel soft robotic gripper for minimally invasive surgery (MIS) intended to remove foreign bodies from the patient's body by imitating human esophageal swallowing motions. The robotic gripper operates as follows: after locating and contacting the foreign body, the last segment of the gripper is expanding or contracting to match the size and catch the targeted object, then pushes forward, or bends it with its legs and starts to remove the object by a rhythmic peristaltic (periodically repeated) motion. This mode of the gripper’s operation allows removing bodies of different sizes from the human body without damaging the surrounding tissues, especially the blood vessels. Both the segments and legs of the gripper are made of dielectric elastomer actuators (DEAs) capable of large deformations under the influence of an external electric field (EEF). A central pattern generator (CPG)- based controller and a Rowat-Selverston type oscillator are selected to control both discrete and rhythmic motions based on electrical voltage – equivalent elastic strain relations of the orthotropic silicone elastomer obtained by the finite element analysis (FEA). The robotic gripper is modelled and studied by the ANSYS Workbench and Matlab/Simulink software. The performed computer modeling shows that due to the simple modular structure and CPG controller, the proposed robotic gripper is much faster, more adaptive and shows better response compared with its pneumatic actuated analogues.
ВЛИЯНИЕ МЕСТНЫХ МИНЕРАЛОВ И УСЛОВИЙ ЭКСПЛУАТАЦИИ НА ФОРМИРОВАНИЕ ПЛЕНОК ФРИКЦИОННОГО ПЕРЕНОСА
Authors: Меликсетян Н.Г. , Оганесян К.В. , Карапетян А.Н. , Сароян В.В.
Published: May 2024

В зависимости от условий эксплуатации проведен анализ трибологических испытаний композиционных самосмазывающихся материалов на полимерной основе, модифицированных молибденовым концентратом и политетрафторэтиленом. В результате изменения содержания наполнителей, скорости скольжения, нагрузки, а также значений шероховатости поверхностей трения были разработаны антифрикционные композиционные полимерные материалы с минимальными значениями интенсивности изнашивания и коэффициента трения.
С целью исследования количественных и качественных характеристик пленок фрикционного переноса, образовавшихся в металлополимерных трибосопряжениях, были использованы методы оптической и сканирующей электронной микроскопии, что позволило без разрушения образца оценить толщину пленок, поверхность покрытия, степень адгезии между пленкой и металлическим контртелом. Долговечность и работоспособность пленки фрикционного переноса обеспечиваются процессом самосмазывания металлополимерного трибосопряжения, повышая тем самым износостойкость и долговечность самого узла трения.
Введение наполнителей в состав композита способствовало существенному переносу их основных элементов на поверхность металлического контртела, а обогащение поверхностной пленки этими элементами привело к увеличению поверхностной плотности, следовательно, увеличению толщины переносимого слоя в 1,5...1,9 раза, а также повышению адгезионной прочности пленок в 1,2...1,5 раза по сравнению с исходным полимерным материалом.
Пленки фрикционного переноса были исследованы также методом рентгеновской фотоэлектронной спектроскопии, анализ которого показал, что трибохимические реакции, происходящие между пленкой и металлическим контртелом, стимулируют рост адгезии между ними, что способствует повышению прочности и работоспособности металлополимерного трибосопряжения и уменьшению износа в зоне контакта.
НОВЫЕ ТЕХНОЛОГИИ ОЧИСТКИ КАНАЛИЗАЦИОННЫХ ТРУБ
Authors: Чибухчян О.С. , Баласанян Б.А. , Закарян М.Е.
Published: May 2024

К концу 20-го - началу 21-го века во всех крупных городах Евразийского Экономического Союза и Европы окончательно сформировались централизованные системы канализации. К настоящему времени стало очевидно, что системы канализации имеют ограниченный срок службы, который значительно меньше прогнозируемого. Это обусловлено ошибками, допущенными в процессе строительства и эксплуатации канализационных сетей.
Разрушение канализационных трубопроводов наносит ежегодно многомиллиардный ущерб экономикам развитых и развивающихся стран. Канализационная система в жилом и промышленном секторах современного города несет постоянную высокую нагрузку. Это способствует скоплению ила и налета различного состава на трубах, постепенно сужая проход, что впоследствии может привести к полному прекращению потока жидкости и к серьезным экологическим последствиям. Вся система канализации нуждается в регулярной профилактической чистке для предотвращения более сложных засоров и сложных аварийных ситуаций.
Важнейшими задачами коммунальных служб и хозяйств мегаполисов и крупных городов в 21-ом веке являются: поддержание канализационных сетей в надлежащем состоянии, минимизация эксплуатационных затрат, увеличение срока службы трубопроводов, эффективная и своевременная организация очистных технологий. Чтобы максимально продлить срок службы трубопроводов и предотвратить повреждения параллельных инженерных сетей, важно тщательно выбирать методы и средства очистки, опираясь на опыт и анализ эффективности уже существующих подходов.
Эксперты подчеркивают, что одной из ключевых проблем внутренней канализации являются жиры, которые обильно присутствуют в бытовых стоках. В начале своего пути теплые стоки быстро остывают внутри трубопровода, что приводит к образованию жировых отложений на внутренней поверхности канализационных труб. Слой жировых отложений будет захватывать и другие примеси, тем самым способствуя образованию более крупного и сложного по составу засора.
Разработка и использование новых современных методов очистки канализационных труб приведут к сокращению эксплуатационных затрат, увеличению их жизненного цикла.
MODERN PROBLEMS OF DEVELOPMENT OF ARMENIAN SCIENTIFIC-TECHNIAL TERMINOLOGY AND LEXICOGRAPHY
Authors: PETROSYAN H.Ts.
Published: May 2024

In the context of development of Armenian general terminology, the origin of scientific-technical terminology and the peculiarities and phases of lexicography are considered. It is shown that Armenian scientific-technical terminology has passed two main stages. In the first stage, in the cause of term creation, translation, lexicography, as well as the establishment of the regularities of term creation, the contribution of the two Mechitarist Congregations has been enormous. The Mechitarists have not only compiled dictionaries, but also used works on Natural Science and those of technical character as textbooks, putting the Armenian terms into circulation. In the second stage, in the Soviet times and at present, in the cause of development of scientific and technical terminology, the role of Yerevan Polytechnic Institute (National Polytechnic University of Armenia, at present) has been decisive. By the demand of the extending list of specialties, the scientific-technical academic methodical of literature in Armenian is the fundament on which various spheres of the Armenian scientific and technical terminological systems are based and developed. Their circulation has favoured not only the education of engineers in Armenian, but also the development of the scientific and technical substyle in Armenian. As a result of considering different dictionaries, particularly the “Russian-Armenian Polytechnic Dictionary” (1988), according to the present requirements set to the lexicography of scientific and technical terminology, the lexicographical peculiarities and deviations of the Armenian terms have been revealed, and based on the regularities of development of terms, their peculiarities have been analyzed. Proposals on the necessity of regulating the scientific and technical terminology and dictionaries, particularly, improving the mentioned Polytechnic dictionary have been made.
Cutis verticis gyrata: Clinical image
Authors: Santos de Assis Ana Paula , Schneidewind Izabela , Fernandes Cordeiro Maria Laura , da Silva Catharino Antônio Marcos
Published: May 2024

No Abstract
Impact of Human Resource Practices with Reference to Montessori School Chennai City
Authors: P Prabha , D Dr Elumalai
Published: May 2024

This study delved into analyzing the impact of human resource practices with reference to Montessori school Chennai city. A random sample of 150 individuals from the Montessori school. To achieve the study's objectives, a questionnaire was designed as a data collection tool, and appropriate statistical tests and tools within (spss.v 20) were used. this study examines the impact of human resource practices in Montessori schools, with a specific focus on the educational landscape of Chennai city. Montessori education is known for its unique approach to child development, emphasizing individualized learning and holistic growth. human resource practices play a crucial role in shaping the quality of education and the overall functioning of Montessori schools.The research adopts a qualitative approach, utilizing interviews, surveys, and observations to gather data from Montessori schools across Chennai city. the study investigates various aspects of human resource management, including recruitment and selection, training and development, performance evaluation, and employee engagement. Human resource management and educational outcomes in Montessori schools, this study provides valuable insights for school administrators, policymakers, educators, and researchers. ultimately, the findings contribute to the ongoing discourse on enhancing educational practices and fostering positive learning environments in Montessori schools. Enhanced Educational Quality to understanding how human resource practices influence Montessori schools can lead to the implementation of more effective strategies for teacher recruitment, training, and development. This, in turn, can enhance the quality of education provided to students, fostering their holistic development.
Стан розвитку громадянського суспільства в Україні (2022–2023 рр.)
Authors: Потапенко В. Г. , Тищенко Ю. А. , Каплан Ю. Б. , Бакальчук О. В. , Корнієвський О. А. , Михайлова О. Ю. , Валевський О. Л. , Карпенко М. М. , Лісогор Л. С. , Валюшко І. В. , Литвиненко О. М. , Палій Г. О. , Степико М. Т.
Published: May 2024

Аналітичну доповідь підготовлено на виконання розпорядження Кабінету Міністрів України «Про затвердження плану заходів до 2024 року щодо реалізації Національної стратегії сприяння розвитку громадянського суспільства в Україні на 2021–2026 роки» від 14 лютого 2023 р. № 160-р. У цій щорічній доповіді висвітлено досвід функціонування українських інститутів громадянського суспільства під час війни. Окреслено основні напрями діяльності громадянського суспільства, схарактеризовано зміни щодо нормативно-правових засад такої діяльності, висвітлено нові форми функціонування інститутів громадянського суспільства під час війни. Для працівників органів державної влади та місцевого самоврядування всіх рівнів, інститутів громадянського суспільства, експертів у сфері розвитку громадянського суспільства в Україні.
Mother's Knowledge of Breastfeeding and Nutrition as a Prevention of Stunting Children
Authors: Mubyaring Putri Sayekti Azzahra , Purwaningsih Endang
Published: May 2024

Stunting has become a world concern that is a nutritional problem, mainly in middle-income countries. According to the World Health Organization (WHO), stunting is a condition caused by recurrent infections, psychosocial simulations, and most obviously by malnutrition. With the prevalence of stunting news at 27.4% in 2021, attention is needed as an effort to reduce the figure in the district of Mojokerto. MBKM Village Free Stunting as a community dedication aims to improve public understanding and knowledge about the health of pregnant mothers, breastfeeding, weaning food, and nutritional competence in the framework of stunting prevention. With the method of socialization attended by 40 mothers from the village of Bandarasri, there was a 14% improvement in understanding about the health of pregnant mothers, 36% about breastfeeding and MP-ASI, 34% about nutritional properties in infants, and 57% about stunting. Based on the presentation, it was shown that socialization activities had an impact on stunting prevention efforts in Bandarasri Village, Ngoro Prefecture, Mojokerto District, East Java.
Evaluation of intralesional 5-fluorouracil versus intralesional interferon alpha in treatment of warts
Authors: Eassa Bayoumy Ibrahim Abdelhameed , Mohamed Ahmed Ezzat Moawad , Omar Omar Abdel Hady , Aladl Ahmad Saeed , Abolela Ahmed Shawky Abdelaty
Published: May 2024

Background: Warts are non-malignant growth of the skin and mucous membranes resulting from infection with human papillomavirus (HPV). It can significantly impact the quality of life for patients and elicit feeling of embarrassment. Aim and objectives: A comparative analysis of the efficacy of intralesional 5-FU and intralesional interferon alpha among distinct groups of patients diagnosed with warts. Patients and methods: This is a cohort of sixty individuals diagnosed with warts were selected from the period of early April 2022 to the end of April 2023. Results: There was a statistically significant difference (P-value=0.005) seen between the two groups, namely group A and group B, in relation to the final response. In group A (5-Fluorouracil)), complete clearance was achieved by 23 patients (76.7%), with 7 patients (23.3%) showing partial response. No instances of resistance were observed in this group. Conversely, in group B (Interferon alpha), only 11 patients (36.7%) attained complete clearance, while 16 patients (53.3%) exhibited partial response, and resistance was evident in 3 cases (10%). Conclusion: Intralesional 5-Fluorouracil (5-FU) is highly effective, cheaper, and easily available in treating warts. The combination of the both treatments may deliver a greater benefit to patients with resistant warts.