bluuebunny/crossref_metadata_2025 huggingface dataset:
Quality Enhancement of Black Soybean [Glycine max (L.) Merrill] Flour using Germination Technique
Authors: Dobhal Neetu , Raghuvanshi R.S.
Published: March 2022

Background: Black soybean [Glycine max (L.) Merrill] is grown on 5734 hectare area of Kumaon and Garhwal region of Uttarakhand state of India but consumed on a very limited scale. The bioavailability of nutrients in soybean is limited due to presence of antinutritional factors such as trypsin inhibitors, oligosaccharides and tannins etc. Literature still lacks in data related to nutritional and health enhancing properties of black soybean, therefore, the present study was undertaken to enhance the nutritional quality of black soybean using germination technique. Methods: Two types of flour were developed from black soybean i.e. raw and 72-hours germinated flour which were analyzed for their proximate and mineral composition, antinutritional content, antioxidant activity, in-vitro protein digestibility, in-vitro iron bioavailability and dietary fibre content. Result: The findings revealed that germination led to significant (P≤0.05) increases in crude protein, crude fibre, total ash, calcium, iron, magnesium, zinc, in-vitro protein digestibility and total dietary fibre content with significant (P≤0.05) reductions in phytates, tannins, oxalates, trypsin inhibitor and oligosaccharide content of black soybean flour. The study concluded that germination significantly enhanced the nutritional properties of black soybean by increasing the density and bioavailability of nutrients and reducing the anti nutrients, thereby making it safer for human consumption.
Larvicidal Activity against the Cabbage Webworm, Hellula undalis (Fabricius) (Lepidoptera: Pyralidae) of the Extract from Pongam Leaves (Pongamia pinnata L.)
Authors: Tran D.H. , Nguyen T.G. , Tran T.X.P. , Tran T.H.D.
Published: March 2022

Background: The cabbage webworm, Hellula undalis (Fabricius) (Lepidoptera: Pyralidae) is destroy insect pest in vegetable crops. Vegetable growers spray many kinds of chemical pesticides to control this insect pest. The objective of this study was to investigate the efficacy of the extract from pongam leaves, Progamia pinnata L. against the cabbage webworm. Methods: The experiment was carried out at the Laboratoty of Entomology, Faculty of Agronomy, University of Agriculture and Forestry, Hue University, Vietnam during 2020 and 2021. Different concentrations of pongam leaf extract was tested its efficacy against first and second instar larvae of the cabbage webworm on potted plants of leaf mustard, Brassica integrifolia West. Result: The efficacy of pongam leaf extract was more efficacious against the first instar than the second instar of H. undalis. At five days after treatment, the efficacy of the pongam leaf extract against first and second instars of H. undalis was 93.2 and 68.4% at concentrations of 1.0%, respectively. Therefore, the pongam leaf extract can be recommended as potential botanical insect ides to control the cabbage webworm.
Epistemic access and success of historically disadvantaged students during the COVID-19 pandemic: A South African experience
Authors: Themane Mahlapahlapana Johannes , Mabasa Layane Thomas
Published: March 2022

The quest for access to higher education has increased rapidly in the past 25 years of democracy in South Africa. However, this increase has not been matched by student academic success. This lack of success may even be worse with the advent of the COVID-19 pandemic. The pandemic has given rise to challenges that have affected student learning, especially for students who come from historically disadvantaged backgrounds. In response to these, many institutions of higher learning have resorted to online teaching and learning. Despite this aforementioned lack of success, there are some who have succeeded. This group of students is the focus of our study. Therefore, the question discussed here is: How do students of historically disadvantaged backgrounds have access to higher education and succeed in their studies, especially during the COVID-19 pandemic? We employed a qualitative methodological approach, where the case study research design was adopted. A purposive sampling strategy was used to select a total of 18 participants from the School of Education at the University of Limpopo in South Africa. The sample was divided into four categories. The first category was made up of 10 students. The second category comprised 2 administrative staff, the third category consisted of 4 academic staff and 2 support staff (residence and academic writing) formed the last category. Data was collected through interviews and document analysis. The findings showed that students from disadvantaged backgrounds encountered challenges with their academic and their social lives during the COVID-19 pandemic. However, we established that they developed coping skills (working in groups, moving around from one spot to the other in search of a strong connectivity) to navigate through their challenges. These findings imply that students from historically disadvantaged backgrounds can succeed if they leverage their studies on self-agency and social capital despite disruptions such as the COVID-19 pandemic.
Academic and institutional readiness towards e-Learning to inform policy and practice in an evolving post-school education sector
Authors: Omidire Margaret Funke , Aluko Folake Ruth
Published: March 2022

Prior to the occurrence of the global COVID-19 pandemic, some African higher education institutions had already adopted a hybridmode for all their programmes, including distance education. Policies and strategies were put in place to improve the practices, skills and competencies of staff and students. However, the closure of education institutions globally due to the pandemic resulted in the rethinking of current education practices and highlighted the inherent inequalities in the system. This baseline qualitative study, underpinned by the Affordance theory, explores the appropriateness of education responses that were utilised and interrogates the readiness of educators for e-Learning during the pandemic. The participants were purposively selected educators (n=11) from distance and contact African institutions. The study sought to contribute to the reconceptualisation of policies and strategies for distance education provision using e-Learning approaches, which have now become a mainstream reality for the post-school education and training (PSET) sector. Data were collected through individual semi-structured interviews. Thematic analysis was applied to the rich data. The findings identified the successes and shortcomings of facilitating e-Learning at a distance during the pandemic. Some participants felt ill-prepared for the extent of work required to be well equipped to use this approach. In many cases, it was felt that support strategies could have been better structured. Further analysis highlighted possible restructuring that should occur to meet the needs of educators in the twenty-first century and to survive any future pandemics through greater use of e-Learning. Evidence-based recommendations for policies are discussed.
Postgraduate students' views on the use of WhatsApp groups as an online communication tool to support teaching and learning during COVID-19
Authors: Van den Berg Geesje , Mudau Patience Kelebogile
Published: March 2022

The purpose of this research was to identify students’ views on the use of WhatsApp in an online postgraduate course at a South African Open Distance eLearning institution during the COVID-19 pandemic. During this time, lecturers and students relied on their mobile devices to communicate using different tools, including WhatsApp. Although it is a trending communication tool in teaching and learning, little is known about students’ views on using WhatsApp to support teaching and learning in a time of crisis. Within an interpretative paradigm, the research followed a case study design and a qualitative approach. The study used questionnaires with open-ended questions to collect data. The sample consisted of 16 students enrolled for a Master’s in Education programme. Data were analysed using a thematic approach. The findings showed that WhatsApp groups provided students with immediate, fast, easy to use and affordable communication and connection, thus, creating a sense of belonging. However, a possible disadvantage was also observed. A WhatsApp group can defeat its purpose if students use it for non-academic chats and it can become a distraction. This study proposes that institutions of higher learning consider using WhatsApp groups to support learning communities as they can alleviate feelings of loneliness and isolation, specifically in times of crisis. Furthermore, the study recommends that the purpose of WhatsApp groups should be clearly outlined to students and that lecturers and students should agree upon some ground rules before they start using WhatsApp groups to support teaching and learning.
MEŠOVITA PRIRODA PSIHOANALITIČKOG DISKURSA
Authors: VULEVIĆ GORDANA
Published: March 2022

Frojd se, još od svoje monografije O afaziji, distancirao od neurološkog redukcionizma svojih savremenika. Ukazujući da se fenomen afazije mora razumeti nezavisno od lokalizacije lezije, Frojd je doprineo svojem potonjem razumevanju fenomena histerije. Histerični simptom se ne može svesti na degenerativne promene centralnog nervnog sistema. U slučaju histerije, predstava reči biva otcepljena od predstave stvari. Neurotični simptom se, na tome će se upravo i bazirati potonja Frojdova doktrina, upravo, otklanja onda kada se tokom psihoterapijskog procesa poveže predstava reči sa predstavom stvari. Odnosno, kada se verbalizuju nesvesni sadržaji koji leže u osnovi simptoma. Diskurs pacijenta, njegove slobodne asocijacije, bitno profiliše drugi diskurs; tj. pacijentovo nesvesno. U analitičkoj situaciji, ono (nesvesno) nam se otkriva kao diskurs. Dakle, kao nešto što (uvek, nekako tek) valja protumačiti, a onda i (kao protumačeno) razumeti. Da nije tako, besmisleno bi bilo klasično određenje psihoanalize kao talking cure. To je nesporno. Ipak, da bi to talking uopšte moglo biti cure, neophodna je suštinska povezanost simboličkog i energetskog. Lingvistička re-interpretacija, nastavlja Riker, ne predstavlja alternativu ekonomskoj eksplanaciji. Dinamika značenja nužno podrazumeva telesno (energetsko)
ESTETIČKA ULOGA FANTAZIJE I NOVI STATUS SLIKE KOD HUSERLA
Authors: TODOROVIĆ TANJA
Published: March 2022

Za Huserla pojam fantazije ima mnogostruko značenje. Estetička uloga fantazije je samo jedna od funkcija koju on ispituje u transcendentalnoj analizi čiste svesti. Huserl će porediti imaginaciju i fantaziju. U svojoj analizi on izbegava tradicionalni pojam uobrazilje, Einbildungskraft, i umesto toga se koristi pojmom Phantasie. Novo razumevanje medijacijske uloge slike u perceptivnim i re-prezentacijskim strukturama svesti će omogućiti ovu razliku. On nema sistemski razvijenu estetičku teoriju, ali posredstvom transcendentalno-fenomenološke pozicije razvija posebno mesto estetičke refleksije u strukturi svesti. Pokazaće se kako Huserl razlikujući fantazijsku aprehenziju od perceptivnog i reprezentacijskog predstavljanja otvara polje za estetiku kao slobodan režim. Time omogućava da se tradicionalna ideja dijalektike razvije u novom pravcu i gradi metodološki fundament za strukturalističku analizu fenomena slike i tela.
AER KAO ARCHE
Authors: KALUĐEROVIĆ ŽELJKO
Published: March 2022

Autor u članku utvrđuje dve grupe razloga kojima se rukovodio Anaksimen prilikom odabira aer-a kao arche-a svega. Jedna grupa ima znanstveno poreklo, dok u drugu grupu spadaju manje reflektovani motivi koji su izranjali iz opšteg duhovnog ambijenta u kome su Anaksimen i druga dvojica Milećana živeli. Nasuprot čestom stavu o regresu Anaksimena u odnosu na Anaksimandra kada je reč o postuliranju vazduha kao načela, autor je na stanovištu da stavovi poslednjeg Milećanina predstavljaju misaoni napredak u odnosu na njegove prethodnike. Argumenti za ovu tvrdnju pronalaze se najpre u njegovom stilu pisanja – proznom, koji ukazuje na Anaksimenov otklon od mitske pozadine i približavanje racionalnom diskursu; drugo, Anaksimen je preformulisao prvobitni kontekst reči aer u njegovo današnje značenje nevidljive tvari koja nas okružuje, razumevši vazduh kao „nešto” a ne „ništa” i postavljajući ga kao načelo; on je učinio korak napred i kada je preciziranje filozofske terminologije u pitanju, distingvirajući bivstvo i svojstva; sa Anaksimenom, konačno, očigledne razlike u vrsti ili kvalitetu su po prvi put svedene na zajedničko poreklo u razlici kvantiteta. Ovome treba dodati uvođenje sintagme zgušnjavanje i razređivanje kojom je pokušao objasniti nastajanje i promenu, odnosno ovim pojmovnim parom Anaksimen je anticipirao pronalaženje izvora kretanja ili causa efficiens-a.
ПРИЛОГ РАЗУМЕВАЊУ НАДРАЦИОНАЛНИХ ЕЛЕМЕНАТА ПЛАТОНОВЕ СПОЗНАЈНЕ ПСИХОЛОГИЈЕ
Authors: СТОЈАНОВИЋ МИХАИЛО
Published: March 2022

: Истраживачки пројекат се у раду излаже у три фазе. У уводном се даје кратка абревијација становишта поводом проблема Добра унутар Платонове метафизике. У другом делу се уводи одредница θέα, дефинише њено семантичко поље у ширем смислу и разлаже улога у систему Платонове философије. Овде настојимо показати да се кроз смисао овог појма долази до централних момената учења. Консеквентно, θέα се показује као интегрални део Платоновог система.  У трећем делу се у историјско-философском смислу разматрају садржинска одређења одреднице θέα. На основу датих анализа истраживачки рад настоји да пружи известан новум у погледу егзегезе Платонових текстова, а овај се примарно односи на приступ проблему Добра. Уместо учесталог онтолошког третмана (када се одредници таксативно приписују особине), овде нудимо гносеолошки угао у разумевању. Резултати истраживања указују на блискост између доминантнe религијскe институцијe антике (култ Елеусине) и спекулативног система Платонове метафизике.
FANATISME DAN KONFORMITAS KOREAN WAVE PADA REMAJA
Authors: Anisa Agustanti
Published: March 2022

Korean Wave sebuah istilah yang diberikan untuk tersebarnya budaya Pop di Indonesia saat ini, fenomena Korea melanda generasi muda terutama remaja Indonesia yang memiliki banyak dampak negatif. Remaja harus bisa merevolusi mental dan juga menjadi agent of change untuk membuat Indonesia semakin baik, dan sebuah bagian masa dari perjalanan kehidupan yang utuh yaitu bagian  dari masyarakat yang senantiasa bisa melakukan banyak kontribusi kebaikan, ditinggikan, optimistis dan pandai. Penelitian ini menggunakan metode Systemic Literatur Review dengan cara mengumpulkan sebanyak mungkin sumber baik itu jurnal, buku yang berkaitan dengan topic penelitian Hasil penelitian menunjukkan fanatisme dan konformitas Korean wave pada Remaja yang membentuk perilaku kesetiaan yang tergabung dalam kelompok atau komunitas, dukungan dan perhatian yang ditunjukkan , dan keyakinan atau pandangan yang menonjol tentang objek Remaja yang menggemari  Korean Wave bisa diupayakan tidak berperilaku fanatik dan konformitas yang negatif seperti berperilaku ekstrim kepada idola, membuat komunitas dengan ciri khas kegemaran yang sama pada Korean wave dan jadikanlah perilaku fanatik dan konformitas remaja yang positif agar masyarakat dapat menerima hal tersebut.
PENGARUH PERSON ORGANIZATION FIT TERHADAP KOMITMEN ORGANISASI
Authors: Jayanti Hardani Dwi
Published: March 2022

Komitmen organisasi didefinisikan sebagai tingkat karyawan sampai dimana karyawan mempunyai keyakinan dan menerima tujuan organisasi ataupun peraturan organisasi, serta berkeinginan untuk tinggal menetap diperusahaan atau meninggalkan perusahaan. Penyebab komitmen yang tidak dimiliki oleh individu ini akan menimbulkan permasalahan keluar masuknya karyawan dan sisi sosial organisasi memberikan ketidaknyaman. Dampak dari komitmen dan person organization fit ini memberikan sisi positif untuk perusahaan dalam hal budaya organisasi. Tujuan dari komitmen oraganisasi ini ialah untuk mengetahui faktor-faktor yang mempengaruhi person organization fit karyawan dilihat dari sisi kesesuaian budaya organisasi karyawan dengan perusahaan. Sehingga akan mengurangi permasalahan yang ada diperusahaan karena ketidaksesuaian individu dengan perusahaan. Manfaat penelitian terhadap kajian yang lebih komprehensif mengenai komitmen organisasi dan person organization fit yang diharapkan dapat memberikan keilmuan yang lebih komperhensif bagi keilmuan psikologi.
PROBLEM BASED TRAINING UNTUK MEREDUKSI STRES AKADEMIK MAHASISWA PADA MASA PANDEMI
Authors: Suharni Suharni , Beny Dwi Pratama , Diana Vidya Fakhriyani
Published: March 2022

The purpose of this study was to determine the effectiveness of the application of problem based training in reducing student academic stress. The approach used in this research is an experimental approach, specifically Quasi Experimental Designs with a one-group pretest-posttest design. This study used a sample of 8 Guidance and Counseling Students who experienced high academic stress, with purposive sampling technique. The treatment used in this research is to use problem based training services. Data analysis technique using Wilcoxon test. The results showed that the application of problem based training services could reduce student academic stress.
PEMBERDAYAAN PENYANDANG DISABILITAS BERBASIS KERAJINAN TANGAN
Authors: Rina Rina Puspita Sari
Published: March 2022

Penelitian ini bertujuan untuk mengeksplor lebih jauh tentang pemberdayaan difabel yang di lakukan secara pribadi oleh bapak sulaiman yang juga sebagai penyandang disabilitas tuna daksa. Jenis penelitian yang akan digunakan adalah jenis penelitian kualitatif, metode wawancara, observasi, dan dokumentasi digunakan untuk memperoleh data yang valid. Data dalam penelitian ini di dapatkan melalui wawancara kepada Bapak Sulaiman sebagai pemilik dan perintis usaha kecil menengah yang berada di Jl. Kaliurang No.Km. 13,5, Besi, Sukoharjo, Kec. Ngaglik, Kabupaten Sleman, Daerah Istimewa Yogyakarta. Peneliti juga menggunakan data sekunder yang berasal dari data dokumentasi yang terdapat pada tempat produksi usaha tersebut yang terletak di samping rumah Bapak Sulaiman. Teknik analisis data menggunakan metode triangulasi, yaitu menggali kebenaran informasi tertentu melalui berbagai metode dan sumber perolehan data.

Hasil penelitian menunjukkan bahwa, pemberdayaan yang di lakukan oleh Bapak Sulaiman terhadap masyarakat disabilitas dilakukan secara pribadi. Dengan merintis usaha dan mempekerjakan kaum difabel yang sudah mendapatkan pelayanan dari pusat rehabilitasi. Karyawan Bapak Sulaiman juga dari luar daerah seperti pati, jawa tengah, jawa timur dll. Hal itu juga membuktikan bahwa penyandang disabilitas juga memiliki semangat kerja yang tinggi, Akan tetapi minimnya lapangan pekerjaan bagi kaum difabel menjadi kendala meskipun mereka sudah mendapatkan pelayanan dari pusat rehabilitasi setempat.
Interpersonal Relationships in Diabetes: Views and Experience of People with Diabetes, Informal Carers, and Healthcare Professionals in Portugal
Authors: Nascimento do Ó Dulce , Serrabulho Lurdes , Ribeiro Rogério T. , Silva Sónia , Covinhas Ana , Afonso Maria João , Boavida José Manuel , Raposo João Filipe
Published: March 2022

Introduction: The increasing burden of diabetes poses a great challenge to healthcare systems and economy worldwide. Although modern therapeutic strategies for diabetes are widely available, most patients still fail to achieve optimal clinical targets and well-being. The primary objective of this study was to assess and explore potential drivers and successful management of diabetes among people with diabetes, family members and healthcare professionals in Portugal, by applying the protocol of the multinational study “Diabetes, Attitudes, Wishes and Needs (DAWN2)”.Material and Methods: A total of 767 adults, including 417 people with diabetes, 123 family members and 227 healthcare professionals, participated in the study. Surveys assessed health-related quality of life, self-management, attitudes/beliefs, social support and priorities for improvement areas in diabetes care.Results: Diabetes has a negative impact on the physical health and emotional well-being of patients in Portugal and is also a psychological burden for family members. Earlier diagnosis and treatment of diabetes were mentioned as a major area of improvement. Healthcare professionals indicated the need for diabetes self-management education.Conclusion: We have used for the first time in Portugal the DAWN2 protocol to address the wishes, needs, and attitudes of Portuguese diabetes patients, their relatives, and healthcare professionals regarding the disease.
Procedimentos e dificuldades de realização do estágio curricular supervisionado sob a ótica do professor coordenador
Authors: Moura Diego Luz , Silva Maria Sergiane Ribeiro e , Araújo João Gabriel Eugênio
Published: March 2022

O objetivo dessa pesquisa foi identificar os procedimentos e dificuldades de realização do Estágio Curricular Supervisionado em Educação Física escolar nas Universidades de Pernambuco. Trata-se de uma pesquisa do tipo qualitativa, realizada com três coordenadores de estágio. A obtenção dos dados se deu por meio de uma entrevista realizada por meio de ligações telefônicas. Foram criadas quatro categorias para analisar as entrevistas. Constatamos que estudar os procedimentos de realização do Estágio Curricular Supervisionado e as dificuldades enfrentadas pelos coordenadores/responsáveis da disciplina do estágio é fundamental para entender a operacionalização do processo do estágio, assim contribuindo para a formação profissional dos estagiários.
Quantifier et segmenter les flux de matières premières utilisées en France par l’alimentation animale
Authors: SAILLEY Manon , CORDIER Cécile , COURTONNE Jean-Yves , DUFLOT Boris , CADUDAL François , PERROT Christophe , BRION Aude , BAUMONT René
Published: March 2022

Les attentes sociétales relatives à l’alimentation des animaux d’élevage s’intensifient (sans OGM, sans déforestation importée, limitant la compétition avec l’alimentation humaine, enrichi en Oméga 3 et/ou 6…) et deviennent parfois une condition d’accès au marché pour certaines productions animales. Afin de construire une méthodologie permettant une segmentation détaillée des consommations de matières premières par filière animale, le Groupement d’Intérêt Scientifique Avenir Élevages a mobilisé un réseau d’experts des différentes filières. Une méthode de réconciliation des flux avec optimisation sous contraintes a été utilisée pour mettre en cohérence les différentes sources de données disponibles et ainsi dresser un panorama complet des flux de matières premières (grains, coproduits et fourrages) dans le système alimentaire de France métropolitaine (alimentation humaine et animale, export, énergie…). Pour l’année 2015, le total des utilisations animales de matières premières concentrées a été évalué autour de 34 Mt standardisées à 85 % de matière sèche et celles de fourrages entre 70 et 72,5 Mt de matière sèche (pertes et refus déduits). Les filières bovines étaient les premières utilisatrices de matières premières concentrées (37 % au total dont 25 % pour les bovins laitiers et mixtes et 12 % pour les bovins à viande), devant les volailles (34 %) et les porcs (23 %). L’utilisation du tourteau de soja apparaît encore plus ciblée : 43 % pour les bovins (36 % pour les laitiers et mites et 7 % pour ceux à viande), 43 % également pour les volailles (dont 29 % pour les volailles de chair), et 6 % pour les porcs. La méthodologie « flux de matières premières » développée dans ce travail permet de fournir des repères précis sur l’alimentation des animaux d’élevage, sa durabilité, l’importance de l’élevage dans la valorisation des coproduits issus de l’agro-alimentaire ou encore l’autonomie alimentaire et protéique de l’élevage français. Sa pérennisation dans un observatoire des flux de matières premières utilisées en alimentation animale est à l’étude afin de disposer d’un suivi pluriannuel de l’évolution des consommations.
Research on Electromagnetic Radiation Mechanism During Detonation of Energetic Material
Authors: Cui Yuanbo , Kong Deren , Jiang Jian , Gao Shang
Published: March 2022

In the process of deflagration of energetic materials, strong electromagnetic radiation is to be generated, which causes the surrounding electronic equipment to fail to work normally. To solve this problem, it is necessary to clarify the mechanism of electromagnetic radiation generated by energetic materials. The mechanism of plasma changed by the deflagration of energetic materials is an important topic in the aerospace and geophysics fields. The academic community holds two main viewpoints on the mechanism of electromagnetic radiation generated by energetic materials: one is that the solid material is squeezed and deformed during the deflagration of energetic materials, and the charges of different polarities rub in space to form effective electric dipoles, which eventually generate electromagnetic radiation. Another view is that the deflagration of energetic materials causes the temperature of the medium to rise sharply, and bremsstrahlung is formed during the compression and diffusion of the high-temperature wave front, resulting in the generation of electromagnetic radiation. This paper, based on theoretical analysis and experimental data, holds the view that electromagnetic radiation is generated by the high-temperature thermal effect. It studies the relationship between temperature and electromagnetic radiation and obtains quantitative analysis conclusions.
Effect of Heterologous Vaccination Strategy on Humoral Response against COVID-19 with CoronaVac Plus BNT162b2: A Prospective Cohort Study
Authors: Demirhindi Hakan , Mete Burak , Tanir Ferdi , Kara Ertan , Kibar Filiz , Cetiner Salih , Candevir Aslihan , Akti Sukriye Ece
Published: March 2022

This study aimed to evaluate the mixed and homogeneous application of the inactivated SARS-CoV-2 vaccine CoronaVac (CV) and the mRNA vaccine BNT162b2 (BNT). This prospective cohort study included 235 health care workers, who had received two prime shots with CoronaVac. They were divided into three cohorts after the third month: Cohort-I (CV/CV); Cohort-II (CV/CV/CV) and Cohort-III (CV/CV/BNT). Anti-S-RBD-IgG and total an-ti-spike/anti-nucleocapsid-IgG antibody concentrations were examined in vaccinated health workers at the 1st, 3rd and 6th months following the second dose of the vaccination. The mean age of 235 health care workers who participated in the project was 39.51±10.39 (min-max: 22-64). At the end of the 6th month, no antibodies were detected in 16.7% of Cohort-I participants, and anti-S-RDB IgG levels showed a decrease of 60% compared to the levels of the 3rd month. The antibody concentrations of the 6th month were found to have increased by an average of 5.13 times compared to the 3rd-month levels in the Cohort-II and 20.4 times in Cohort-III. The heterologous vaccination strategy “CoronaVac and BNT162b2 regimen” is able to induce a stronger immunity and it will help remove inequalities in the developing world where CoronaVac was the initial prime.
Structure (Epicardial Stenosis) and Function (Microvascular Dysfunction) that Influences Coronary Fractional Flow Reserve Estimation
Authors: Joseph Jermiah J. , Sun Clara , Lee Ting-Yim , Goldman Daniel , Kharche Sanjay R. , McIntyre Chris W.
Published: March 2022

Background. The treatment of coronary stenosis relies on invasive high risk surgical assessment to generate the fractional flow reserve diagnostics index, a ratio of distal to proximal pressures in respect of coronary atherosclerotic plaque causing stenosis. Non-invasive methods are therefore a need of the times. This study proposes an extensible mathematical description of the coronary vasculature that permits rapid estimation of the coronary fractional flow reserve. Methods. By adapting an existing closed loop model of human coronary blood flow, the effects of large vessel stenosis and microvascular disease on fractional flow reserve were quantified. Several simula-tions generated flow and pressure information which was used to compute fractional flow re-serve under a spectrum of conditions including focal stenosis, diffuse stenosis, and microvascular disease. Sensitivity analysis stratified the influence of model parameters on the index. The model was simulated as coupled non-linear ordinary differential equations and numerically solved us-ing an implicit higher order method. Results. Large vessel stenosis affected fractional flow re-serve. The model predicts that the presence, rather than severity, of microvascular disease affect coronary flow deleteriously. Sensitivity analysis revealed that heart rate may not affect the index. Conclusions. The model provides a computationally inexpensive instrument for future in silico coronary blood flow investigations as well as clinical-imaging decision making. A combination of focal and diffuse stenosis appears to be essential in reducing the index. In addition to pressure measurements in the large epicardial vessels, diagnosis of microvascular disease is essential. The independence of the index with respect to heart rate suggests that computationally inexpensive steady state simulations may provide sufficient information to reliably compute the index.
Spring 2020 Aerosol Contamination of the Atmosphere over Kyiv City
Authors: Zhang Chenning , Shulga Valery , Milinevsky Gennadi , Danylevsky Vassyl , Yukhymchuk Yuliya , Kyslyi Volodymyr , Syniavsky Ivan , Sosonkin Mikhail , Turos Olena , Simon Andrii , Choliy Vasyl , Maremukha Tetiana , Petrosian Arina , Pysanko Vladyslav , Honcharova Anna , Shulga Dmitry , Miatselskaya Natallia , Morhuleva Varvara
Published: March 2022

Extraordinary high aerosol contamination observed in the atmosphere over Kyiv city, Ukraine, during the March – April 2020 period. The source of contamination was the large grass and forest fires in the northern part of Ukraine and the Kyiv region. The level of PM2.5 load investigated using newly established AirVisual sensors mini-network in five areas of the city. The aerosol data from the Kyiv AERONET sun-photometer site analyzed for that period. Aerosol optical depth, Angstrom exponent, and the aerosol particles properties (particles size distribution, single-scattering albedo, and complex refractive index) were analyzed using AERONET sun-photometer observations. The smoke particles observed at Kyiv site during the fires in general correspond to aerosol with optical properties of biomass burning particles. The variability of the optical properties and chemical composition indicates that the aerosol particles in the smoke plumes over Kyiv were produced by different burning material and phases of vegetation fires at different time. The case of enormous PM2.5 aerosol contamination in Kyiv city reveals the need to accept strong measures for forest fire control and prevention in Kyiv region, especially in the north-west region where radioactive contamination from Chornobyl disaster is still significant.
Aerodynamic Performance and Wake Flow of Crosswind Kite Power Systems
Authors: Kheiri Mojtaba , Victor Samson , Rangriz Sina , Karakouzian Mher Marc , Bourgault Frederic
Published: March 2022

This paper presents some results from a computational fluid dynamics (CFD) model of a multi-megawatt crosswind kite spinning on a circular path in a straight downwind configuration. The unsteady Reynolds averaged Navier-Stokes equations closed by the k−ω SST turbulence model are solved in the three-dimensional space using ANSYS Fluent. The flow behaviour is examined at the rotation plane, and the overall (or global) induction factor is obtained by getting the weighted average of induction factors on multiple annuli over the swept area. The wake flow behaviour is also discussed in some details using velocity and pressure contour plots. In addition to the CFD model, an analytical model for calculating the average flow velocity and radii of the annular wake downstream of the kite is developed. The model is formulated based on the widely-used Jensen’s model (Technical Report Risø-M; No. 2411, 1983), which was developed for conventional wind turbines, and thus has a simple form. Expressions for the dimensionless wake flow velocity and wake radii are obtained by assuming self-similarity of flow velocity and linear wake expansion. Comparisons are made between numerical results from the analytical model and those from the CFD simulation. The level of agreement was found to be reasonably good. Such computational and analytical models are indispensable for kite farm layout design and optimization, where aerodynamic interactions between kites should be considered.
A Beacon in the Galaxy: Updated Arecibo Message for Potential FAST and SETI Projects
Authors: Jiang Jonathan H. , Li Hanjie , Chong Matthew , Jin Qitian , Rosen Philip E. , Jiang Xiaoming , Fahy Kristen A. , Taylor Stuart F. , Kong Zhihui , Hah Jamilah , Zhu Zonghong
Published: March 2022

An updated, binary-coded message has been developed for transmission to extraterrestrial intelligences in the Milky Way galaxy. The proposed message includes basic mathematical and physical concepts to establish a universal means of communication followed by information on the biochemical composition of life on Earth, the Solar System’s time-stamped position in the Milky Way relative to known globular clusters, as well as digitized depictions of the Solar System, and Earth’s surface. The message concludes with digitized images of the human form, along with an invitation for any receiving intelligences to respond. Calculation of the optimal timing during a given calendar year is specified for potential future transmission from both the Five-hundred-meter Aperture Spherical radio Telescope in China and the SETI Institute’s Allen Telescope Array in northern California to a selected region of the Milky Way which has been proposed as the most likely for life to have developed. These powerful new beacons, the successors to the Arecibo radio telescope which transmitted the 1974 message upon which this expanded communication is in part based, can carry forward Arecibo’s legacy into the 21st century with this equally well-constructed communication from Earth’s technological civilization.
Mathematical modeling of dissociation of gas hydrates in porous medium taking into account ice and salt
Authors: Kazakevich Grigory Ilych , Poveschenko Yuri Andreevich , Podryga Victoria Olegovna , Rahimly Parvin Ilgar gizi , Bakeer Ahmed Elsaid Ezeldin Bakeer Ali , Abu-Nab Ahmed Kamal Ibrahim
Published: March 2022

In the work, the method of splitting by physical processes is consistently applied to the problems of underground hydromechanics associated with gas hydrates and taking into account the presence of ice and the ice-water phase transition, as well as the presence of salt. The systems are reduced to the block form, with the separation of the dissipative and hyperbolic parts. It was shown by the method of characteristics that the usual approximation of the upwind coefficients should be modified here. Using the Gibbs phase rule, a choice was made of the determining variables in the flow zones that differ from each other in the number of phases and components. A general mathematical model has been built for the entire area of the process.
About the works of modeling and designing a pump-turbine system in pumped-storage power plants (review)
Authors: Borovin Gennady Konstantinovich , Tkachuk Veniamin Vadimovich
Published: March 2022

The paper presents an overview of research in the world on the design and creation of pumped hydroelectric energy storage with hydraulic machines having optimal characteristics according to the principle of operation of reversible pump turbines, optimization of their flow part. Special attention was paid to the work on the study of the operation of the hydraulic machine in pumping and turbine modes. As the study of publications has shown, active research is being conducted abroad on the design and creation of hydroelectric power plants with hydraulic machines having optimal characteristics. When designing hydraulic machines, various mathematical modeling systems are used. As international experience shows, the study of hydraulic machines and, in particular, the pump-turbine, using computational fluid dynamics tools, for example, CFD modeling is becoming increasingly widespread.
PENAMBAHAN AMPAS TEH HIJAU FERMENTASI DALAM RANSUM ITIK CIHATEUP SEBAGAI UPAYA PERBAIKAN PROFIL LIPID DARAH
Authors: Kusmayadi Andri , Sundari Ristina Siti
Published: March 2022

Green tea dreg has the potential to be used as an additive to poultry feed because it still contains complete and useful nutrients. The aim of this study was to examine the effect of adding fermented green tea dregs into the ration on the blood lipid profile of Cihateup ducks. The research was carried out experimentally to evaluate the blood lipid profile levels of Cihateup ducks consisting of total cholesterol, triglycerides, LDL and HDL. A total of 60 Day-old Cihateup ducks was randomly assigned to 4 treatment groups and 5 replications per treatment. The four treatments were differentiated according to the differences in the percentage of fermented green tea dregs used, namely 0%, 1%, 2%, and 3%, respectively. The significant effects of the treatments study was further tested using the DMRT method. The results showed that the addition of fermented green tea dregs in the diets had a significant effect (P<0.05) on total cholesterol and LDL levels. However, the parameters of triglycerides and HDL were not significantly affected (P>0.05). The addition of 3% fermented green tea dregs in the ration resulted in the lowest blood cholesterol and LDL of the Cihateup ducks.
El impacto socioeconómico global del COVID-19: un análisis basado en brotes epidémicos para Nueva Zelanda
Authors: Zepeda Contreras Alan Alejandro , Trueba Regalado Rafael
Published: March 2022

El trabajo tiene como objetivo determinar los impactos socioeconómicos globales que han ocasionado el síndrome respiratorio agudo severo (SARS), la influenza H1N1, el síndrome respiratorio del Medio Oriente (MERS) y en especial el coronavirus (COVID-2019) en diversos periodos de análisis, haciendo hincapié en cómo se han presentado estos comportamientos en el caso neozelandés. El enfoque metodológico de la investigación fue mixto, se utilizaron bases estadísticas para el análisis de las variables estudiadas, así como diversas fuentes de literatura. Los resultados indican que el COVID-19 es el virus que más efectos socioeconómicos globales ha generado en términos de crecimiento económico, desempleo y comercio internacional. La nación menos perjudicada por los diferentes brotes epidémicos es Nueva Zelanda, esto se atribuye a que su población y territorio son pequeños, con crecimiento y desarrollo económico constante, y sus habitantes poseen un alto grado de educación. Estos factores impulsaron la toma de decisiones del gobierno de una forma eficiente para crear un adecuado protocolo de salud pública, controlar los contagios y amortiguar la situación económica.
Isotopías de sostenibilidad urbana y regional en el Estado de México
Authors: Orozco-Hernández María Estela
Published: March 2022

Este ensayo explora la instrumentalización de la sostenibilidad urbana y regional en el Estado de México. Por medio de datos institucionales, cuadros, gráficas, mapas y literatura se analizan los instrumentos de planeación, el perfil de los gobiernos municipales en materia de planeación, desarrollo urbano y ordenamiento territorial, el índice de prosperidad y el estado ambiental urbano. La retórica, más allá de un período de gobierno, replantea el paradigma socio organizativo y procesual inherentes al sistema de gestión pública entendido como un proceso coadyuvante en la creación de oportunidades y capacidades para el desarrollo territorial. El marco jurídico vinculante constituye un componente transversal en la medida que establece mecanismos para potencializar y fortalecer las aptitudes de interlocución, negociación y toma de decisiones de los gobiernos municipales, y garantice la inclusión de los avances y retrocesos que retroalimenten los instrumentos de planeación y políticas públicas incluyentes de las dimensiones de la sostenibilidad urbana y regional.
Prognostic Impact of Activin in Gastric and Esophageal Adenocarcinomas
Authors: Staudacher Jonas Jaromir , Kühl Anja A. , Pötzsch Michelle , Daum Severin , von Winterfeld Moritz , Berg Erika , Hummel Michael , Rau Beate , Stein Ulrike , Treese Christoph
Published: March 2022

Purpose:Adenocarcinomas of the esophagus (AEG) and stomach (AS) are among the most common cancers worldwide. Novel markers for risk stratification and guiding treatment are strongly needed. Activin is a multi-functional cytokine with context specific pro- and anti-tumorigenic effects. We aimed to investigate the prognostic role of activin tumor protein expression in AEG/ASs. Methods:Tissue from a retrospective cohort of 278 patients with AEG/AS treated primarily by surgery at the Charité - Universitätsmedizin Berlin was collected and analyzed by immunohistochemistry using a specific antibody to the activin homodimer subunit. Additionally, we evaluated T-cell infiltration and PD1 expression as well as expression of PD-L1 by immunohistochemistry as possible confounding factors. Clinico-pathologic data were collected and correlated with activin protein expression.Results: Out of 278 tumor samples, 72 (25.9%) exhibited high activin protein expression. Higher activin expression was correlated with lower Union for International Cancer Control (UICC) stage and longer overall survival. Interestingly, activin expression correlated with CD4+ T-cell infiltration, and the correlation with higher overall survival was exclusively seen in tumors with high CD4+ T-cell infiltration, pointing towards a role of activin in the tumor immune response in AEG/ASs. Conclusion: In our cohort of AEG/AS, higher activin levels were correlated with longer overall survival, an effect exclusively seen in tumors with high CD4+ cell infiltration. Further mechanistic research is warranted discerning the exact effect of this context specific cytokine.
On the Exact Soliton Solutions of Radhakrishnan-Kundu-Lakshmanan Equation
Authors: Ozisik Muslim , Secer Aydin , Bayram Mustafa , Yusuf Abdullahi , Sulaiman Tukur Abdulkadir
Published: March 2022

Using an efficient modified extended tanh expansion method, we establish robust solutions for the Radhakrishnan-Kundu-Lakshmanan equation in this work. We want to utilize the effective scheme to solve the problem for the governing model. Bright and mixed dark–bright optical solitons are successfully exposed using the Maple symbolic package. On the 3-dimensional and 2-dimensional graphs, the physical features of the presented data are easily visible.
The Health Organization Resilience in Covid-19 Pandemic
Authors: Ezzati Farahnaz , Mosadeghrad Ali Mohammad , Pooyan Ebrahim Jaafari
Published: March 2022

Background: Health care facilities are responsible for preventing and controlling diseases and must have sufficient resilience to deal with crises. Iranian health care facilities have faced challenges in managing COVID-19. The purpose of this study was to identify the challenges to the resilience of Iranian health care facilities during the COVID-19 pandemic and to provide appropriate solutions.Methods: This qualitative study was conducted with a phenomenological approach and using semi-structured interviews with 59 managers, policy makers, health system experts, and faculty members. The participants were selected through snowball sampling. Thematic analysis was used to analyze the data.Results:The resilience challenges of Iranian health care facilities were classified into eight groups: leadership and management; planning; organizational culture; organizational learning; employee management; customer management; resource management; and process management. The most important resilience challenges were: lack of an integrated management system; poor leadership; incompatibility of the management system and the network structure; lack of a national program; poor case detection program; lack of resources; inefficient information system; negative attitude of managers and employee; organizational inertia; failure to build on lessons learned from crises; lack of workforce preparedness; lack of community-based management; declining social capital; and lack of oversight. Managers must use community-based, evidence-based, and integrated management to build resilience against COVID-19, have sufficient knowledge and experience to organize operations, use appropriate and effective coordination models, develop a creative and participatory culture, reengineer structures and processes, and provide the necessary resources. Conclusion: Iranian health care facilities face challenges that prevent them from becoming resilient, responsive, and efficient in managing COVID-19. It is essential that policy makers and managers take the necessary steps to address these issues.
Effects of ischemic conditioning on head and neck free flap oxygenation: A randomized controlled trial
Authors: Min Se-Hee , Choe Suk Hyung , Kim Won Shik , Ahn Soon-Hyun , Cho Youn Joung
Published: March 2022

Purpose: Flap failure after microvascular reconstructive surgery is a rare but devastating complication caused by reperfusion injury and tissue hypoperfusion. Remote ischemic conditioning (RIC) provides protection against ischemia/reperfusion injury and reduces tissue infarction. We hypothesized that RIC would enhance flap oxygenation and exert organ-protective effects during head and neck free flap reconstructive surgery.Methods: Adult patients undergoing free flap transfer surgery for head and neck cancer were randomized to receive either RIC or sham-RIC during surgery. RIC consisted of four cycles of 5-min ischemia and 5-min reperfusion applied to the upper or lower extremity. The primary endpoint, tissue oxygen saturation of the flap, was measured by near-infrared spectroscopy on the first postoperative day. Organ-protective effects of RIC were evaluated with infarct size of rat hearts perfused with plasma dialysate from patients received RIC or sham-RIC.Results: Between April 2018 and July 2019, 50 patients were randomized (each n=25) and 46 were analyzed in the RIC (n=23) or sham-RIC (n=23) groups. Tissue oxygen saturation of the flap was similar between the groups (85 ± 12% vs 83 ± 9% in the RIC vs sham-RIC groups; P=0.471). Myocardial infarct size after treatment of plasma dialysate was significantly reduced in the RIC group (44 ± 7% to 26 ± 6%; P=0.018) compared to the sham-RIC group (42 ± 6% to 37 ± 7%; P=0.388).Conclusions: RIC did not improve tissue oxygenation of the transferred free flap in head and neck cancer reconstructive surgery. However, there was evidence of organ-protective effects of RIC in experimental models.Registry number of ClinicalTrials.gov: NCT03474952