bluuebunny/crossref_metadata_2025 huggingface dataset:
Fracture Characteristics of AZ31B and Cu 99 Tensile Test Specimens Joined by FSW and FSW-IG Processes
Authors: Binchiciu Emilia-Florina , Codrean Cosmin , Botila Lia-Nicoleta , Nicolaeiscu Mircea , Iacobici Răzvan Ionuţ
Published: May 2022

The aim of the current study is to perform a failure analysis on specimens extracted from 4 mm sheets of AZ31B, according to ASTM 4377G and 3 mm sheets of Cu99 alloys according to SR EN 1652:2000, that were joined together using FSW and FSW-IG processes. In order to promote the suitability and advantages of implementing FSW-IG processes in the automotive and aerospace industry, the papers authors performed destructive testing on the samples extracted, namely tensile strength test, following with topography analysis using scanning electron microscopy – SEM, combined with energy dispersive spectroscopy EDS, micro-hardness tests and fractography investigations. Results highlighted a considerable improvement in the ultimate tensile strength of the welded joint, a higher degree of deformability of the welded joint in the case of FSW – IG, compared to classical FSW; while maintaining the same process conditions and parameters. Experimental data is in accordant with automotive and aerospace imposed compliances, thus presented and discussed in the following scientific article.
Testing of an Innovative Method for Overlap Friction Stir Welding (FSW) of 1 mm Thick Sheets of 5754 Aluminium Alloy, on Tilted Jig
Authors: Verbiţchi Victor , Duma Iuliana , Perianu Ion Aurel
Published: May 2022

A welding test piece has been made by the overlap friction stir welding (FSW) of 400 mm x 110 mm x 1 mm sheets of EN AW 5754 aluminium alloy, placed on a tilted jig, of the multifunctional friction processing machine, type MMPF.
The Influence of Drying Time on a Glass - Adhesive - Steel Bonding
Authors: Mădroane Denis-Florin , Duma Iuliana , Galatanu Sergiu Valentin
Published: May 2022

The paper presents some general aspects of adhesives used in the automotive industry, the method used to determine mechanical properties, and the advantages compared to the traditional technology used. Adhesives are substances capable of permanently bonding to surfaces by an adhesive process. This process implies that two different bodies are in contact so that the mechanical forces or work can be transferred across the interface region. Since their discovery, researchers have made great efforts to obtain more ecological and high-performance adhesives. Substances such as bitumen or beeswax have been replaced by synthetic types of adhesives. Today, adhesives have two purposes: to join two different bodies, in creating a permanent assembly, and to seal. In this paper, the type of adhesive used to fix the windshield directly to the car body which is made of metal is presented. Compared to traditional technology that involves a rubber gasket attached to the body of the car and the windshield that is fixed on it, adhesives have the role of sealing and bonding directly to the metal surface. The first part of the paper focuses on the determination of the mechanical properties of adhesives used in the automotive industry. The next step was to realize the bonding between glass and steel using windshield adhesive with different drying times.
Studies Regarding FCAW Welding of Dissimilar Joints between Duplex Stainless Steel and Naval Carbon Steel
Authors: Puchianu Marian , Daşcău Horia Florin , Solomon Gheorghe
Published: May 2022

In this paperwork is presented a study of dissimilar welding with FCAW welding process, between duplex stainless steel S31803 (1.4462) and naval carbon steel EH36 (1.0546), being analyzed all the considerations related to their weldability, resulted mechanical properties, microstructure and evaluation of the toughness and hardness of the weld seam and HAZ area.
Study on Soldering Alloy Structure Influence on Whiskers Germination and Grow Process in Joints Executed Using Tin Base Soldering Alloys
Authors: Codrean Cosmin , Buzdugan Dragoş , Radu Bogdan , Melcioiu Georgiana
Published: May 2022

Electronic components soldered with tin base alloys are subject to whiskers formations after an operation period, which produced failures by short circuits. The main factors which determine formation of whiskers are soldering alloy characteristics, substrate alloys which is placed on the surface of the PCB boards and not the least the working environment. Soldering alloy has a major influence on germination and growing whiskers process, by its nature and grain form, dimensions and orientation. Given the preliminary research carried out to diminish the formation of these defects, was proposed to realize these soldered joints using new soldering alloys obtained by melt-spinning method, which have a nanocrystalline, quasi-crystalline or even amorphous structure. In this paper are presented some results obtained on following the influence of soldering alloy structure over whiskers germination and growing process, by simulating the operation conditions according to applicable standards. Were obtained soldered joints on copper plates using a commercial soldering alloy as well as soldering alloys base on Sn-Cu-Ga, Sn-Cu-Ni, Sn-Cu-CO families, obtained by melt-spinning method. Soldering was performed using a soldering iron and after this process, the soldered joints were placed in an incubator under controlled temperature and humidity conditions. Performing SEM analyzes on soldered joints subject to the above treatment, was observed that formation and growing of whiskers diminished with decrease of the grain size.
Synthesis and Characterization of Chitosan/Alginate/Mesoporous Phosphotungstic Acid Electrolyte Membranes for Direct Methanol Fuel Cell Applications
Authors: Atmaja Lukman , Hartanti Evin Ayu , Rachmawati Devi Ruchmana
Published: May 2022

In this study, chitosan (Chi), alginate (Alg), and mesoporous phosphotungstic acid (mPTA) were used as electrolyte membrane materials for DMFC. Chi and Alg will be crosslinked with mPTA filler to improve the performance of the electrolyte membrane. Characterizations carried out include tensile tests, methanol permeability, and proton conductivity. The results of the tensile test showed that the Chi-Alg(3:1) membrane had a higher tensile strength value (26.64 N/mm2) than the pure chitosan membrane (11.97 N/mm2). The results of methanol permeability show that the Chi-Alg(3:1)/mPTA(2.0%) membrane has a lower methanol permeability value (8.17 × 10-6 cm2 s-1) and a relatively high proton conductivity value, (45.8 × 10-3 S cm-1). Chi-Alg/mPTA membrane, simplicity of the used simple preparation method and the cost reduction can be applied as an electrolyte membrane for DMFC.
Assessments Used by Athletic Trainers to Decide Return-to-Activity Readiness in Patients With an Ankle Sprain
Authors: McCann Ryan S. , Welch Bacon Cailee E. , Suttmiller Ashley M. B. , Gribble Phillip A. , Cavallario Julie M.
Published: May 2022

Context

Athletic trainers (ATs) often care for patients with ankle sprains. Expert consensus has been established for rehabilitation-oriented assessments (ROASTs) that should be included in ankle-sprain evaluations. However, the methods ATs use to determine return-to-activity readiness after an ankle sprain are unknown.

Objectives

To identify ATs’ methods for determining patients’ return-to-activity readiness after an ankle sprain and demographic characteristics of the ATs and their methods.

Setting

Online survey.

Design

Cross-sectional study.

Patients or Other Participants

We recruited 10 000 clinically practicing ATs. A total of 676 accessed the survey, 574 submitted responses (85% completion rate), and 541 respondents met the inclusion criteria.

Main Outcome Measure(s)

We distributed an online survey to ATs that asked about their assessment of pain, swelling, range of motion, arthrokinematics, strength, balance, gait, functional capacity, physical activity level, and patient-reported outcomes in deciding return to activity. Descriptive statistics were used to characterize participant demographics and frequencies of the assessment measures used by ATs. Chi-square analysis was conducted to identify relationships between the demographics and assessment selection.

Results

Pain, swelling, range of motion, strength, balance, gait, and functional capacity were assessed by 76.2% to 96.7% of ATs. Arthrokinematics, physical activity level, and patient-reported outcomes were assessed by 25.3% to 35.1% of participants. When selecting specific assessment methods, ATs often did not use recommended ROASTs. Athletic trainers with higher degrees, completion of more advanced educational programs, employment in nontraditional settings, more clinical experience, and familiarity with expert consensus recommendations were more likely to use ROASTs.

Conclusions

Before approving return to activity for patients with ankle sprains, ATs did not use some recommended outcomes and assessment methods. Practice in nontraditional settings, more advanced degrees, more clinical experience, and familiarity with expert consensus guidelines appeared to facilitate the use of ROASTs.
О базисах всех замкнутых классов вектор-функций алгебры логики
Authors: Taimanov V A
Published: May 2022

Рассматривается функциональная система вектор-функций алгебры логики с естественным образом определенной операцией суперпозиции. Показано, что в каждом замкнутом классе вектор-функций существует конечный базис.
Классы кусочно-квазиаффинных подстановок на диэдральной, полудиэдральной и модулярной максимально-циклической 2-группах
Authors: Pogorelov Boris Aleksandrovich , Pudovkina Marina Aleksandrovna
Published: May 2022

Неабелевыми 2-группами $H$ с циклической подгруппой индекса 2 являются группа диэдра, обобщенная группа кватернионов, полудиэдральная группа и модулярная максимально-циклическая группа. Ранее авторами на произвольной неабелевой 2-группе $H$ с циклической подгруппой индекса 2 введены классы кусочно-квазиаффинных преобразований. Для обобщенной группы кватернионов порядка $2^m$ была получена полная классификация ортоморфизмов, полных преобразований и их левых аналогов среди рассматриваемого класса кусочно-квазиаффинных преобразований. В данной работе подобная классификация завершена для оставшихся трех групп (группы диэдра, полудиэдральной и модулярной максимально-циклической групп).
О критерии распространения для монотонных булевых функций с одним или двумя минимальными векторами носителя
Authors: Isaev Gleb Andreevich
Published: May 2022

В работе исследуется критерий распространения для монотонных булевых функций, у которых множества минимальных векторов носителей состоят из одного или двух векторов. Получены необходимые и достаточные условия выполнения критерия распространения для вектора, зависящие от весов векторов из множества минимальных векторов носителя функции и от наличия общих ненулевых компонент у этих векторов и данного вектора. Найдены мощности множеств векторов, удовлетворяющих критерию распространения для таких функций.
Factors affecting access to health care facilities in a rural Community: The case of Bali-Nyonga Sub-Division, Cameroun
Authors: Sop Sop Maturin Désiré , Eloundou Messi Basile
Published: May 2022

Adequate and equitable distribution of health care facilities in rural areas is critical to human capital development. The study determines distance as a factor influencing utilization of health facilities in Bali-Nyonga. The main objective of the research is to evaluate the socio-economic effect of distance to health care in Bali-Nyonga. Data for this were gathered through field observation, face to face interview and questionnaires. Data from secondary sources included publish and unpublished material which was presented in form of related literature review. The data were analyzed using descriptive measures and presented in the form of tables, chart, percentages and graphs. In Bali-Nyonga, where the condition of roads is very poor, distance from the nearest health facility emerges as the most important factor influencing utilization. The vulnerable groups of women, the age, sickly, the illiterate and the poor were not found to be more strongly affected by distance decay. The policy implication arising from this study suggest that distance to improve health care needs to be reduce to enhance accessibility and to improved health service by various socio-economic groups in the area. It was recommended to strengthen the efforts to improve accessibilities of health care facilities in the rural areas by increasing the number of health facilities, transport and sensitization of the rural indigenes.
Storytelling strategies for facilitating the development of comprehension: A case for pre-schoolers in Zimbabwe
Authors: Madondo Fortunate , Dampier Graham
Published: May 2022

The study explored storytelling strategies used by teachers to facilitate children’s development of story comprehension. Seven educators and forty-four preschoolers, aged three to five years, participated in the study at a primary school situated in Masvingo, Zimbabwe. Learners listened to six cultural stories randomly selected from different genres that included fables, myths, and legends. A Grounded Theory approach to data gathering and analysis was used to develop the ‘recycling of knowledge’ theory. Findings suggested that ‘recycling of knowledge’ served as the primary social process, which provided teachers with the most effective strategies for improving children’s comprehension of stories. The study recommended that Early Childhood Development (ECD) educators should implement strategies involved in the recycling of knowledge theory to improve children’s early literacy and story comprehension.
The perception of Japanese among teachers and learners in Kenya: A case of tertiary institutions
Authors: Wamuti Lydia , Bwire Adelheid , Were Vincent
Published: May 2022

Japanese is one of the foreign languages taught in tertiary institutions in Kenya. Though the language is offered at basic as well as at advanced levels, most of its learners do not pursue it beyond the basic level. One of the contributing factors to the low progression could be how the teachers and the learners perceive the language. This paper examined the perception of teachers and learners of Japanese in tertiary institutions. Data was collected through administering questionnaires and interviews to the teachers and learners of the language. The data was then analyzed using statistical software. The study revealed that learners’ perceive the language as a tool for communication and socialization, as well as a means for professional advancement. It was also found that some teachers do not consider it necessary to teach the logographic scripts (Kanji) scripts, and that some institutions do not teach Kanji at all. The lack of emphasis on Kanji scripts, perceived difficulty of the language and the perception that the language is a tool of socialization of which basic level is sufficient, were seen to be among the main factors that hinder learner progression to advanced levels.
The development and refinement of a rating scale for beginner students’ foreign language speaking skills
Authors: Grobler Carina , Smits Tom FH
Published: May 2022

Interactional oral language proficiency is a core component of modern foreign language education with ‘speaking fluently’ a central learning objective (Eisenmann & Summer, 2012). In spite of its importance, speaking is a difficult skill to assess (Tajeddin et al., 2011; Yan, 2014), and there is a gap in literature regarding the reliable and valid assessment of the very basic level of speaking skills. This paper reports on the development process of an assessment instrument, which was conducted as action research and involved both quantitative and qualitative data collection and an analysis. The learning environment and its related technology-enhanced out-of-class practice environment within which the research was conducted, focus on beginner foreign language students. Activities include computer-mediated communication and face-to-face oral activities. In order to address the need for a valid and reliable assessment instrument, a first version of the instrument was created and subsequently used to assess both computer-mediated communication and face-to-face oral activities. The reliability of the instrument was investigated during two action research cycles by means of studying the consistency, consensus estimates, and intra-rater reliability. The results from the two cycles of investigation informed changes to the instrument, and this ultimately resulted in two assessment instruments that differentiate between technology-enhanced activities and personal interaction. Similar to Gruhn and Weideman (2017), this study was of an exploratory nature and additional design principles would have to be evaluated over a longer period of time.
Reimaging feedback for improved academic writing in distance education: Lecturers and markers’ perspectives in South Africa
Authors: Maphoto Kgabo , Sevnarayan Kershnee
Published: May 2022

Specific mechanisms relating feedback to learning are still not understood. One of the most neglected issues in education is the notion of providing constructive feedback to students, in particular, students who speak English as an Additional Language (EAL). EAL students may not cope with academic writing if explicit feedback is not provided. The objective of this paper is to explore markers and lecturers’ perspectives of ffeedback in a first-year Academic Writing module at a Distance Education (DE) institution in South Africa. The study was conducted in a mega module but, due to the qualitative nature of this paper, the participants consisted of seven lecturers and four markers. Using a case study research design, in conjunction with Vygotsky’s (1978) socio-cultural theory and Hattie and Timperley’s (2007) Model of Feedback, this paper argues that feedback needs to be reimaged in DE contexts. From the interviews and an observation schedule, the findings revealed that there is a marked difference between the ways in which markers and lecturers view feedback in students’ assignments. The paper concludes by arguing that the growing diversity of the type of distance education students and the availability of technology call for the reimaging of feedback in DE. In addition, recommendations are provided to aid practitioners to foster quality feedback to improve academic writing proficiency in DE contexts.
Neonates with SARS-CoV-2 infection: spectrum of disease from a prospective nationwide observational cohort study
Authors: Zimmermann Petra , Uka Anita , Buettcher Michael , Fougère Yves , Plebani Margherita , Relly Christa , Schmid Hanna , Ritz Nicole
Published: May 2022

BACKGROUND: Coronavirus disease 2019 (COVID-19) can be more severe in infants than in older children. To date, only a few case series have reported data on neonates with COVID-19, including mostly asymptomatic neonates who were tested because of exposure to maternal SARS-CoV-2 infection. This study summarises nationwide epidemiological data, clinical characteristics, treatment and outcomes of neonates presenting with symptomatic SARS-CoV-2 infection.
METHODS: Data were prospectively collected through the Swiss Paediatric Surveillance Unit from hospitalised neonates with laboratory-confirmed SARS-CoV-2 infection (positive polymerase chain reaction on a respiratory sample) from 1 March 2020 to 31 September 2021. All 29 paediatric hospitals in Switzerland reported cases.
RESULTS: In total, 73 neonates were included; 7 (10%) were preterm. The median age at presentation was 17 days (interquartile range [IQR] 11–23); 40 (55%) were female. The majority of neonates (64, 88%) were admitted from home. Nine (12%) had a pre-existing medical condition. Overall, the most common symptom recorded was fever in 52 (71%), followed by rhinorrhoea or nasal congestion in 32 (44%) and respiratory distress in 19 (26%). Twenty (27%) neonates presented with fever without a source. Seven (10%) neonates were admitted to an intensive care unit (5 for respiratory failure and 2 for monitoring). One (1%) neonate required inotropic support. The median length of hospital stay in term neonates was 4 days (IQR 3–5). Two (3%) were treated with corticosteroids and 1 (1%) with remdesivir. In total, 60 (82%) neonates had contact with a known or suspected SARS-CoV-2 index case. All of the 71 neonates for whom data were available were discharged to their homes without symptoms.
CONCLUSION: In neonates, COVID-19 mainly presents with fever, and symptoms of upper and lower respiratory tract infection. The clinical course is mostly mild, requiring a short period of hospitalisation. COVID-19 needs to be added as a differential diagnosis in neonates who present with fever without a source. However, the presence of SARS-CoV-2 should not deter from the search for a serious bacterial infection. Further data from surveillance studies are needed to better understand COVID-19 in neonates, guide therapy and to evaluate whether the clinical spectrum is changing with new SARS-CoV-2 variants.
PHƯƠNG PHÁP XANH TỔNG HỢP POLY (FURFURYL ALCOHOL) SỬ DỤNG CHẤT LỎNG ION
Authors: NGUYỄN THỊ NHẬT THẮNG
Published: May 2022

Một phương pháp xanh và bền vững để tổng hợp poly(furfuryl alcohol) (PFA) được tiến hành bằng cách sử dụng dung môi là chất lỏng ion. Ba hệ chất lỏng ion đã được nghiên cứu cho quá trình trùng hợp của furfuryl alcohol (FA). Dữ liệu thực nghiệm đã chứng minh rằng hỗn hợp chất lỏng ion của ethylene glycol và zinc chloride (ZnCl2) được sử dụng hiệu quả để trùng hợp FA mà không cần bất kỳ dung môi và chất xúc tác có tính acid nào khi so sánh với các phương pháp truyền thống khác. Các đặc trưng của PFA tổng hợp được đánh giá thông qua các phương pháp phân tích hiện đại như FT-IR, 1H-NMR, và 13C-NMR. Số liệu khảo sát động học phản ứng thể hiện tốc độ trùng hợp của FA trong chất lỏng ion tuân theo mô hình giả bậc hai. Điểm mới của nghiên cứu này là tận dụng được vai trò của chất lỏng ion, một dung môi “xanh” và thân thiện với môi trường, như một chất xúc tác.
TỔNG HỢP VẬT LIỆU IN DẤU PHÂN TỬ CHỌN LỌC QUERCETIN ỨNG DỤNG PHÂN TÍCH QUERCETIN TRONG MẪU RAU
Authors: NGUYỄN VĂN TRỌNG  , VĂN THANH KHUÊ
Published: May 2022

Vật liệu polymer in dấu phân tử (MIP) chọn lọc cho quercetin (QC) được tổng hợp bằng phản ứng đồng trùng hợp giữa hai monomer acrylamide (AA) và 4–Vinyl piridine (4-VP) với chất liên kết chéo ethylenglycol dimethacrylate (EGDMA), quá trình đóng khối polyme nhờ chất khơi mào 1,1′-Azobis(cyclohexanecarbonitrile) (ACCN). Khả năng hấp thụ tối đa QC đạt được là 0,2544 mg/g vật liệu MIP. Tính chọn lọc của vật liệu MIP đối với QC là 94,80 %, cao hơn so với Catechin (10,23 %) đồng phân của QC. Qui trình phân tích QC đã được hiệu lực hóa trên nền mẫu rau. Hiệu suất thu hồi đạt được từ 91,16 % đến 94,50 %, giới hạn phát hiện (LOD) và giới hạn định lượng (LOQ) lần lượt là 0,56 ppm và 1,69 ppm.  Mẫu rau được thu thập trên thị trường và được thực hiện quy trình phân tích đã nghiên cứu, mẫu được cho qua MIP và phân tích bằng HPLC với đầu dò UV, kết quả đã phản ánh được sự phù hợp của MIP trong việc chọn lọc đối với Quercetin.
TÍNH CHẤT LÝ-HÓA CỦA TINH BỘT ĐẬU XANH TÁCH BẰNG PHƯƠNG PHÁP SỬ DỤNG CÁC CHẤT HỖ TRỢ KHÁC NHAU
Authors: NGUYỄN THỊ MAI HƯƠNG  , PHAN NGỌC HÒA  , PHẠM VĂN HÙNG
Published: May 2022

Mục tiêu của nghiên cứu này nhằm xác định những thay đổi về hiệu suất thu hồi, thành phần hóa học, hình thái và tính chất lý hóa của tinh bột khi sử dụng các chất hỗ trợ làm sạch khác nhau. Theo đó tinh bột đậu xanh giống DX044 trồng tại Việt Nam được phân tách bằng phương pháp nghiền ướt với huyền phù tinh bột được ngâm trong các dung dịch nước, Na2SO3 0,2%, NaOH 0,1% và NaHSO3 0,15% trước khi rửa sạch bằng nước cất 3 lần, sấy, nghiền và rây. Kết quả cho thấy hiệu suất thu nhận, khả năng loại bỏ protein, chất béo của các mẫu sử dụng NaOH và NaHSO3 cao hơn so với mẫu sử dụng nước cất và Na2SO3. Trong đó, màu sắc ở mẫu NaHSO3 được cải thiện rõ rệt, khác biệt so với các mẫu còn lại. Hình thái, kích thước, độ trương nở và đặc tính hồ ít thay đổi ở mẫu dùng NaHSO3, nước và Na2SO3; trong khi đó, mẫu sử dụng NaOH các tính chất này bị thay đổi có ý nghĩa thống kê (p<0,05). Kết quả nghiên cứu này cho thấy, có sự ảnh hưởng của các chất hỗ trợ làm sạch đến tính chất lý-hóa và NaHSO3 là chất hỗ trợ làm sạch phù hợp nhất sử dụng để tách tinh bột nhằm cải thiện màu sắc và hiệu suất thu hồi tinh bột so với dùng nước cất nhưng không ảnh hưởng đến các tính chất lý-hóa của tinh bột đậu xanh.
NGHIÊN CỨU TIỀN ĐỀ PHÁT TRIỂN HỆ THỐNG THUẬT NGỮ MÔ TẢ MÙI VỊ (SENSORY LEXICON) CHO TRÀ XANH VIỆT NAM
Authors: PHAN THỤY XUÂN UYÊN  , NGUYỄN THỊ MINH  , NGUYỄN HOÀNG DŨNG
Published: May 2022

Nghiên cứu nhằm phát triển một hệ thống thuật ngữ mô tả (lexicon) cho trà xanh Việt Nam, với định hướng cung cấp một công cụ mới cho phân tích mô tả trà xanh, đóng góp vào quá trình kiểm soát chất lượng và nghiên cứu sản phẩm mới. Hội đồng cảm quan gồm mười hai thành viên được huấn luyện trong 40 giờ nhằm nâng cao khả năng mô tả, khả năng phân biệt các sản phẩm, khả năng lặp lại các đánh giá và đạt đồng thuận với các thành viên khác. Hội đồng đã phát triển 107 thuật ngữ mô tả đặc tính cảm quan trên 30 sản phẩm trà xanh Việt Nam (10 Lâm Đồng, 20 Thái Nguyên). Các thuật ngữ này được phân thành 23 nhóm, gồm có: 21 nhóm thuật ngữ mô tả mùi/hương, 1 nhóm thuật ngữ mô tả vị, và 1 nhóm thuật ngữ mô tả cảm giác. Trong số này, mười một thuộc tính được coi là đặc trưng cho trà xanh Việt Nam là: mùi lá xanh, mùi cỏ mới cắt, mùi lá cháy, mùi khói, mùi rong biển, mùi hoa, mùi hạt rang, vị đắng, vị umami, cảm giác chát và hậu vị ngọt.
VAI TRÒ CỦA CITRUS FIBER ĐẾN CÁC TÍNH CHẤT CẤU TRÚC CỦA MAYONNAISE CHAY, ÍT BÉO ĐƯỢC CHẾ BIẾN TỪ DỊCH ĐẬU VÁN VÀ DẦU DỪA
Authors: PHẠM THỊ THANH HƯƠNG  , LÂM NGỌC MINH ANH  , NGÔ TRUNG CHÁNH  , NGUYỄN THỊ MINH NGUYỆT
Published: May 2022

Trong nghiên cứu này, dịch aquafaba từ đậu ván được sử dụng để thay thế trứng trong sản phẩm mayonnaise chay, ít béo nhằm đáp ứng xu hướng dinh dưỡng và sức khỏe trong cộng đồng ăn thuần chay trong những năm gần đây. Mục tiêu của nghiên cứu là xác định vai trò của Citrus fiber (CF) đến các tính chất cấu trúc của mayonnaise chay, ít béo từ dịch aquafaba thu nhận từ đậu ván và dầu dừa. Tổng cộng có 6 công thức (CT) gồm: 1 CT không sử dụng CF (đối chứng) và 5 CT ứng với hàm lượng CF 100 M40 và CF 300 FG lần lượt được khảo sát ở các mức 3 và 4% và phối trộn với tỷ lệ 2: 2% (% Klg). Công thức mayonnaise cơ bản (theo % Klg) bao gồm: xanthan gum 0,3%, đường 9,5%, giấm 4,5%, dầu dừa 4%, muối 1,7%, bột mù tạt 0,2%, acid citric 0,1%, chất bảo quản tự nhiên chiết xuất từ hương thảo (R10) 0,035%, chất màu tự nhiên beta-carotene 0,0032% và dịch aquafaba từ đậu ván được bổ sung đủ 100%. Các tính chất đặc trưng của mayonnaise như khả năng giữ nước, tạo nhũ và độ bền nhũ đã được đối sánh qua 6 CT. Kết quả cho thấy CF có vai trò đặc biệt trong việc hình thành cấu trúc của mayonnaise và ở hàm lượng CF 300 ở mức 3% được ghi nhận là thích hợp nhất. Mô hình Q10 cũng đã được sử dụng để dự đoán hạn sử dụng thông qua đánh giá chỉ số peroxide (PV) của sản phẩm cuối cùng (sử dụng 3% CF 300) giữa mẫu có và không có sử dụng R10. Nghiên cứu có ý nghĩa trong việc phát triển sản phẩm mayonnaise hay các loại sốt salad ít béo từ thực vật an toàn, thân thiện với môi trường nhằm đáp ứng xu hướng tiêu dùng thực phẩm chay đang gia tăng đồng thời góp phần phát triển hệ thống thực phẩm bền vững.
ĐÁNH GIÁ TÍNH AN TOÀN CỦA CHIẾT XUẤT ETANOL VỎ QUẢ Annona squamosa L. QUA NGHIÊN CỨU ĐỘC TÍNH CẤP VÀ BÁN MÃN TÍNH TRÊN CHUỘT
Authors: TRẦN THỊ PHƯƠNG NHUNG  , NGUYỄN THI TRANG  , TRẦN THỊ THANH NHÃ  , NGUYỄN NGỌC BẢO TRÂN  , NGUYỄN THỊ YẾN NHI  , NGUYỄN DUY KHANG  , ĐINH THỊ DIỄM  , NGUYỄN THU VIÊN  , PHAN THỊ TUYẾT MAI  , LÊ CHI NA  , VÕ QUÍ NHƯ  , MAI NGUYỄN NGUYÊN THẢO  , LÊ TRÚC TIÊN  , NGUYỄN THỊ HỒNG TRÂM
Published: May 2022

Annona squamosa L. (họ Annonaceae) là một loài cây bụi thường xanh lớn, được trồng ở nhiều vùng khác nhau của Việt Nam. Nhiều chất chuyển hóa trong A. squamosa L. đã cho thấy các hoạt động chống oxy hóa và kháng khuẩn. Trong nghiên cứu này, chúng tôi khảo sát tính an toàn của chiết xuất nước từ vỏ quả A. squamosa L. (EaAS) bằng cách sử dụng các thử nghiệm độc cấp tính và bán mãn tính ở chuột Swiss albino. Độc tính cấp tính (1000, 3000, 5000 và 7000 mg/kg thể trọng) và độc tính bán mãn tính (100, 300, 500 và 700 mg/kg thể trọng) được xác định bằng đường uống và kiểm tra liên tục trong 14 và 90 ngày. Các dấu hiệu nhiễm độc, thay đổi hành vi, tỷ lệ tử vong, thay đổi khối lượng cơ thể và nội tạng, huyết học, sinh hóa, phân tích nước tiểu, mô bệnh học của nhóm đối chứng và nhóm thử nghiệm độc cấp tính và bán mãn tính của EaAS đã được khảo sát. Kết quả kiểm tra cho thấy không có bất thường ở các nhóm thử nghiệm so với nhóm đối chứng. EaAS không gây độc cấp tính hoặc và bán mãn tính ở chuột.
Neutrosophic Generalized Semi Alpha Star Compact, Connected, Regular and Normal Spaces in Topological Spaces
Authors: Latif Raja Mohammad
Published: May 2022

Real-life structures always include indeterminacy. The Mathematical tool which is well known in dealing with indeterminacy is Neutrosophic. Smarandache proposed the approach of Neutrosophic sets. Neutrosophic sets deal with uncertain data. The notion of Neutrosophic set is generally referred to as the generalization of intuitionistic fuzzy set. In 2021, P. Anbarasi Rodrigo and S. Maheswari introduced new concepts of Neutrosophic closed sets namely Neutrosophic generalized semi alpha star closed   eu briefly N gsα*-closed sets and eu N gsα*-open sets as well as eu N gsα*-continuity in Neutrosophic topological spaces and studied their some properties. In this chapter, we introduce the notions of eu N gsα*-compact spaces, eu N gsα*-Lindelof space, countably eu N gsα*-compact spaces, eu N gsα*-connected spaces, eu N gsα*-cseparated sets, eu N -Super-gsα*-connected spaces, eu N -Extrem ely-gsα*-disconnected spaces, and eu N -Strongly-gsα*-connected spaces, eu N gsα*-R egular spaces, strongly eu N gsα*-R egular spaces, eu N gsα*-Normal spaces, and strongly eu N gsα*-Normal spaces by using eu N gsα*-open sets and eu N gsα*-closed sets in Neutrosophic topological spaces. We study their basic properties and fundaments characteristics of these spaces in Neurosophic topological spaces.
Parents' Positive Behavior in Children in Online Learning at Sds Rancakasumba
Authors: Wangi Risfa Mustifa , Saputra Renda Sandi
Published: May 2022

The existence of COVID-19 pandemic struck across the country in the world, including Indonesia has disrupted human activities in various sectors of life. Online learning can not be separated from internet networks. The internet network connection is one of the obstacles that the students live in the suburbs. The problem with online learning during the COVID-19 pandemic is environmental incompatibility by changing old habits so that parents do various ways so that parents can provide positive behavior toward children. This paper focuses on a positive behavior model in parents as an essential part of online learning by children amid the uncertainty of the end of the COVID-19 pandemic. The method in this paper is a literature study or literature review on positive behavior with logical model analysis. The results show that the factors that influence parents' positive behavior towards children in online learning amid the COVID-19 pandemic must fulfill the elements of confidence, hope, optimism, resilience, and intelligence of parents in responding to online learning carried out by their parent’s children. In addition, social capital as an alternative strengthens parents' positive behavior towards children so that they feel comfortable with the presence of parents to accompany online learning.
DEVELOPMENT OF COLLABORATIVE LEARNING MODELS TO IMPROVE STUDENT'S WRITING SKILLS CLASS V SD NEGERI 065011 SUB-DISTRICT MEDAN CITY
Authors: Butarbutar Norita , Sutikno Sutikno , Kartolo Rahmat
Published: May 2022

The low interest and talent of fifth grade students at SD Negeri 065011, Medan Selayang Subdistrict, Medan City, for the 2021-2022 academic year in writing activities is caused by the absence of creativity made by educators in teaching students. For this reason, it is necessary to develop an innovative learning model that can make students more active in the process of learning to write. The learning model to be developed in this research is a collaborative learning model. The collaborative learning model is one of the "Student-Centered Learning" (SCL) models. The purpose of this study was to describe the effectiveness of the use of collaborative learning models in improving the writing skills of fifth graders at SD Negeri 065011, Medan Selayang Subdistrict, Medan City in the 2021-2022 academic year. The research method used in this research is the research & development method. The research subject of this development product is the validator. The object of research in this study is a writing learning model, namely a collaborative learning model that is implemented in fifth grade students of SD Negeri 065011, Medan Selayang District, Medan City in the 2021-2022 academic year. The instrument used to obtain research data using non-test instruments and test instruments. The results of this study indicate that the collaborative learning model is effective in improving the skills of writing descriptive text by fifth grade students of SD Negeri 065011, Medan Selayang District, Medan City in the 2021-2022 academic year, where before the process of developing the collaborative learning model was in the sufficient category and then increased to good after the process of developing cooperative learning models in class V of SD Negeri 065011, Medan Selayang District, Medan City, for the academic year 2021-2022.
Enónimos en la lírica horaciana.
Authors: Ferrandis Huerta Fran
Published: May 2022

La lírica horaciana presenta un profuso elenco de nombres de vinos, hasta el punto de tener cada uno un papel específico en la composición poética en la que aparece. En este escrito nos proponemos ofrecer distintos datos, como origen, valoración en el mundo antiguo, propiedades médicas etc., de los vinos citados por Horacio para tratar de interpretar mejor la función de cada enónimo en la poesía de este ilustre autor latino.
On Indo-European e ~ o.
Authors: Ballester Xaverio
Published: May 2022

La propuesta de Schmitt–Brandt (1973) de remontar la mayoría de las /e/ documentadas en las lenguas indoeuropeas a una antigua */a/ breve tónica choca con numerosas dificultades, mientras que muchos indicios apuntan más bien a que la histórica /e/ tuvo su principal origen en una antigua */a/ breve, sí, pero átona, y la histórica /o/ en una antigua */a/ breve, sí, pero tónica.
Dynamic Web Application for Food Ordering
Authors: Rathore Shivani , Lokhande Pragathi
Published: May 2022

This project online pizza ordering introduces the pizza website. Online pizza ordering provide pizza to customer, it only shows the list of available pizzas in menu in the website which can be controlled by admin account. Users can view and buy the pizza from website the image categorize different types of pizzas available on site. Once customer selects and order the pizza it will go to different phases, The phases are explained in detail below.
Philosophy in the Time of Media and Technological-information Madness
Authors: Vuksanović Divna
Published: May 2022

From the point of view of the philosophy of the media, the text problematises the possibility and practice of thinking (self-awareness) in the time of media domination and the rule of technological-information ‘madness’. Also, in the background of the presentation plan, the article touches on the critique of the so-called media-based capitalism; it confronts the concept of ‘madness’ that we encounter under the veil of activity of the rational (instrumental) mind and modern media on the one hand and the thinking subject, his theoretical and practical possibilities, on the other. All this is demonstrated on the example of the (mis)use of artificial intelligence in modern media, which most often acts on social networks through two phenomena: the ‘epistemic bubble’ and the ‘echo chamber’. Based on the performed analyses, it is shown that the philosophy of the media, as an interdisciplinary oriented, theoretical critique of the media and mediated reality, has the opportunity and obligation to position itself towards technical inventions such as artificial intelligence used in the media, thus contributing to self-awareness and practice, both of the own discipline and of the social community in which the philosophy of the media critically participates.
A constitucionalidade da LEI 13.467/2017 no que tange à gratuidade da justiça no âmbito trabalhista e seus efeitos na relação jurídica das partes
Authors: Rodrigues Nadia Gabriella Nascimento , Souza Ana Paula Veloso De Assis
Published: May 2022

O contemporâneo trabalho traz para estudo a seguinte temática: “A constitucionalidade da Lei nº. 13.467/2017 no que tange á gratuidade da justiça no âmbito trabalhista e seus efeitos na relação jurídica das partes”. A finalidade dessa pesquisa é, portanto, analisar a validade jurídica da lei supracitada em relação ao reconhecimento do benefício da justiça gratuita nas relações trabalhistas, bem como analisar os reflexos que surgem as partes envolvidas na ação. O trabalho se desenvolverá através da pesquisa bibliográfica utilizando o método de pesquisa hipotético-dedutivo, por meio do auxílio das doutrinas, legislações, julgados e de dados coletados na internet será possível realizar a reflexão sobre a gratuidade da justiça nas relações trabalhistas apos o advento da Lei 13.467/2017. No que tange a composição, o trabalho foi dividido em três seções os quais juntos elucidaram a problemática, e, por fim, em sede de considerações finais, será exposto a constitucionalidade da Lei diante da gratuidade da justiça nas relações trabalhistas.
A Descriptive Study Using Ultrasonography to Compare the Internal Echogenic Pattern of the Masseter Muscle in Patients With and Without Oral Submucous Fibrosis
Authors: AK Nabeel
Published: May 2022

Objectives: The increased muscle activity and diminished blood supply following connective tissue changes in Oral Submucous Fibrosis (OSF) patients lead to muscle degeneration and fibrosis. The histopathological examination of OSF patients confirms fibrosis, but it also causes scarring and worsens OSF. Ultrasonography (USG) has been utilized in recent research to assess the echogenic patterns of the head and neck muscles in OSF patients. The study aimed to compare the echogenic pattern of the masseter muscle in OSF patients to that of normal mucosa using USG.

Methods: The study population was split into cases and controls. The cases were 63 subjects who were clinically diagnosed with OSF. In comparison, the controls were 63 subjects who were randomly selected from the outpatient clinic of Oral Medicine and Radiology, Government Dental College, Thiruvananthapuram. According to Khanna and Andrade’s criteria, OSF subjects were divided into four groups based on their clinical findings. A high-resolution real-time LOGIQUE C5 ultrasonic scanner with 7-12MHz transducers was used to image the masseteric muscle.

Results: In the present study, type II internal echogenic pattern (64.4 %) was predominant, followed by type III and type I in OSF subjects. So, type I internal echogenic patterns might be associated with normal muscles, and types II and III internal echogenic patterns might be associated with pathologic changes. A good interobserver agreement was observed.

Conclusion: In OSF patients, the appearance of the masseter muscle’s internal echogenic pattern showed a varied pattern from that of normal types.
Perspectives of Parents regarding the Appropriateness of Physical Restraint Alone or in Conjunction with Sedative Techniques for Managing Challenging Pediatric Dental Behaviour
Authors: Nathan John E
Published: May 2022

Purpose: A retrospective look at parents’ responses to having witnessed their children of varying levels of apprehension undergo sedative treatment visits across a 35 year period. Sedation visits with outcomes ranging from optimal or adequate, to inadequate and over-dosage, were assessed by both parents and their clinician.

Methods: After witnessing their child’s visits, parents were asked if they would choose sedation for future visits under circumstances where outcomes cited need for persistent application of restraints vs more favorable outcomes. Post-treatment surveys of over 4,360 parents were conducted at the time of discharge after observing their children’s responses to oral sedation visits in a private practice setting. Variable dosing of Chloral hydrate-Hydroxyzine with and without Meperidine, and Midazolam with and without Meperidine were compared.

Results: Not surprisingly, for parents where sedation was rated inadequate, 95% indicated they would likely opt for alternative modalities rather than subject their children to measures which ultimately necessitated persistent applications of restraint. Under circumstances where outcomes enabled treatment objectives to be accomplished without any form of restraint, parents correspondingly indicated they would have no reservation in accepting a pharmacological modality for future visits. Where transient application of physical restraint was needed to overcome minimally, moderately, or severely interfering behaviors, reactions were mixed among parents while clearly leaning in the direction of finding sedation desirable. Parents observing less than adequate success of sedation indicated they would consent to using sedation procedures for future visits only if it meant avoiding use of general anesthesia. Conclusion: Perceptions of parents where persistent application of restraints were needed found their use neither acceptable, appropriate nor desirable. There appears to be a trend in this direction amongst clinicians of today but in lieu of current practices which make little or no use of sedative modalities, this appears by no means universal.
Assessment of Radiation Safety Training, Practices and Knowledge amongst Canadian Orthopaedic Resident Training Programs
Authors: P Schneider , J Bourget-Murray
Published: May 2022

Objective: There is ample literature demonstrating significant health risks associated with radiation exposure, yet there is no standardized radiation safety training for Canadian orthopaedic surgery residents. This is the first national survey investigating the prevalence of radiation safety training and radiation safety practices in Canadian orthopaedic residency programs.

Methods: A nationaln online survey was distributed to orthopaedic residents currently enrolled in a Canadian program from all post-graduate (PGY) levels who were fluent in English or French with a medical doctorate or equivalent training. Fellows, international elective or observer ship students were excluded.

Results: Overall response rate across Canada was 41% (n=116). Most respondents (94%, n=102) were concerned about the negative effects of radiation, yet only 11% (n=12) felt confident with their radiation safety knowledge. Of the residents who felt confident in their knowledge, only 42% (n=5) answered all three radiation safety screening questions correctly. Overall, 58% (n=66) of respondents had undergone some form of radiation safety training. Compliance with protective lead was high (92%, n=93) when available, but 82% (n=92) of respondents cited issues accessing properly fitting lead. Only 18% (n=20) of orthopaedic residents reported routinely wearing dosimeters.

Conclusion: Limited access to properly fitting protective lead, poor radiation safety knowledge, and lack of routine radiation monitoring could be placing residents at risk for poor health outcomes in the future. These results provide impetus for orthopaedic residency programs across Canada to implement higher safety standards in the form of standardized radiation safety training, routine dosimeter use, improved lead availability, and continued abidance to radiation safety protocols.
Preoperative Lateral Laxity in the Extensor Position and Intraoperative Medial Soft Tissue Release Affect Postoperative Ligament Balance in Osteoarthritis Knees Undergoing TKA in Women
Authors: Arai Yuji
Published: May 2022

Purpose: Adequate ligament balance is important for long-term outcomes after Total Knee Arthroplasty (TKA). We retrospectively evaluated preoperative factors and intraoperative medial soft tissue release techniques that affected adequate ligament balance after TKA for varus knee.

Method: One hundred knees with Osteoarthritis (OA) in women were included. X-rays were taken preoperatively and postoperatively with varus and valgus stress in the extension and flexion positions. Knees were postoperatively, classified as stable (n=49) or laxity (n=51).

Results: Factors associated with adequate ligament balance include joint inclination angle of varus at extension, and superficial Medial Collateral Ligament (sMCL) release. Postoperative ligament balance was significantly associated with preoperative joint inclination angle of varus at extension of 7°.

Conclusion: Preoperative lateral laxity in the extensor position under stress X-ray and sMCL release may affect postoperative ligament balance. A 7° preoperative lateral joint inclination may be useful in predicting postoperative ligament balance.
Frayer model: a strategy to improve the science vocabulary of grade 9 students of bagbag national high school
Authors: Sacapaño Rosalina Cordova , De Castro Ferdinand M.
Published: May 2022

PURPOSE This study aimed to investigate the effectiveness of Frayer Model a strategy to improve the Science vocabulary of Grade 9 students of Bagbag National High School in Rosario Cavite. DESIGN/ METHODOLOGY/ APPROACH This study used Quasi – Experimental method utilizing the two-group, control group and treatment group, pre-test- post-test design. The chosen participants were sixty (60) students of Grade 9 students of Bagbag National High School. The assessment of the result was conducted through a posttest given to the participants only. T-test is used for two sample means, average means and standard deviation were used to compare the results of the pre-test and post-test. FINDINGS There was a significant difference between the post-test results of the two groups. It means that experimental group has higher test result in Science after being exposed to Frayer Model than the control group. Thus the experimental group performed better than the control group. And also there were a significant difference between the gain scores of the control group and experimental group. The gained score of experimental group were greater than the control group which means that experimental group under Frayer Model was effective. Research Limitation and Implication: Frayer Model focused only on enhancing science vocabulary through the use of graphic organizers and its impact on the achievement level of the student on the Science subject. The Researcher of the study recommends some ways in modifying the use of Frayer Model, depending on the topic needed. The whole study focused on the competencies of the second quarter. Originality/ Value: The study focused on how the Science achievement level learning outcome assessment result can be increased through Frayer Model.
Leisure time, sport and gender equality – Consuelo Diodati
Authors: Diodati Consuelo
Published: May 2022

Female role still has many difficulties in establishing itself on the social scene - in some countries more than elsewhere, for example in Italy - in these cases sport can represent a metaphor for society and re-propose discrimination. On the other hand, sport is for many people an important channel of social mobility. The American sociological studies on the vast presence of black athletes in sport, remain illuminating in this perspective. It highlights how sport has been from the beginning, one of the few areas in which there have been more carrier opportunities, competition was lower and whites people preferred to pursue careers considered of greater prestige. Sport has therefore represented an important emancipation channel for all people who are in some way marginal, coming from poor families and from the third world. A similar dynamic can be applied in approaching female universe, which can find in sport a channel of affirmation on the social scene.