bluuebunny/crossref_metadata_2025 huggingface dataset:
Νέοι ετεροκυκλικοί χηλικοί παράγοντες με αντιική και αντιπαρασιτική δράση
Authors: Γιαννακοπούλου Ερωφίλη
Published: May 2023

Στην παρούσα διδακτορική διατριβή περιγράφονται ο σχεδιασμός, η σύνθεση και η αξιολόγηση της βιολογικής δράσης νέων ενώσεων, που φέρουν δισχιδή χηλικό υποκαταστάτη συμπλοκοποίησης μετάλλων και μπορούν να δράσουν ως ισχυροί αναστολείς μεταλλοενζύμων. Η παρούσα εργασία χωρίζεται σε δύο μέρη. Το πρώτο μέρος περιλαμβάνει μια σειρά 48 υδαντοϊνικών αναλόγων τα οποία είναι υποκατεστημένα με την καρβοϋδροξαμική ομάδα και επιδεικνύουν αντιτρυπανοσωμιακή δράση έναντι των Τ. brucei και T. cruzi. Ο σχεδιασμός αυτών των ενώσεων βασίστηκε σε προηγούμενα δεδομένα και δημοσιεύσεις της ερευνητικής μας ομάδας, σύμφωνα με τα οποία η εισαγωγή της ακετοϋδροξαμικής ομάδας στο ιμιδικό άτομο αζώτου λιπόφιλων σπειροκαρβοκυκλικών 2,6-δικετοπιπεραζινών οδηγεί σε ανάλογα με σημαντική αντιτρυπανοσωμιακή δράση. Πιο συγκεκριμένα, στην παρούσα διατριβή συντέθηκαν σπειροκαρβοκυκλικά και δισυποκατεστημένα υδαντοϊνικά ανάλογα που φέρουν στο ιμιδικό άζωτο την ακετοϋδροξαμική ομάδα. Επιπλέον συντέθηκαν ακετοϋδροξαμικά ανάλογα που φέρουν Ν-μεθυλο ή Ν-βενζυλο υποκατάσταση στο αμιδικό άζωτο του υδαντοϊνικού δακτυλίου καθώς επίσης και μια κατηγορία σπειροκαρβοκυκλικών γλυκινοϋδροξαμικών και προλινοϋδροξαμικών οξέων. Λαμβάνοντας υπόψη την προσέγγιση για περαιτέρω εκμετάλλευση ενώσεων που δρουν δεσμεύοντας μεταλλικά ιόντα σε περισσότερους από έναν μικροοργανισμούς, και το γεγονός ότι αρκετοί χηλικοί παράγοντες με αντι-HCV δράση έχουν αναφερθεί στη βιβλιογραφία, τα νεοσυντεθειμένα ανάλογα εξετάστηκαν για την αντιική τους δράση έναντι της αντιγραφής του HCV και επανεμφανιζόμενων Φλαβοϊών της οικογένειας Flaviviridae. Τα νέα ανάλογα επέδειξαν πολύ ισχυρή αντιτρυπανοσωμιακή δράση έναντι του Τ. brucei με τιμές EC50 που κυμαίνονται από τη νανομοριακή μέχρι τη χαμηλή μικρομοριακή κλίμακα και αξιοσημείωτους δείκτες εκλεκτικότητας. Ορισμένα ακετοϋδροξαμικά παράγωγα είναι επίσης δραστικά έναντι του T. cruzi με τιμές EC50 σε υπομικρομοριακά έως μικρομοριακά επίπεδα. Επιπλέον, οι περισσότερες ενώσεις εμφανίζουν ισχυρή δράση σε νανομοριακή και χαμηλή μικρομοριακή κλίμακα έναντι δύο διαφορετικών γονοτύπων του HCV και ορισμένες είναι δραστικές έναντι ενός ή περισσότερων Φλαβοϊών. Το δεύτερο μέρος αναφέρεται στη σύνθεση 19 N-υδροξυπυριδινοδιονών (HPDs), ως αναστολείς της HBV RNaseH. Η ιδέα προήλθε βάσει της ικανότητας ορισμένων ενώσεων, που φέρουν την Ν-υδροξυιμιδική ομάδα, να αναστέλλουν την αντιγραφή του HBV. Συγκεκριμένα, συντέθηκαν HPDs συζευγμένες με αρυλαμίνες, αλκυλαμίνες και αρυλ- αλκυλ- αμίνες. Οι ενώσεις ελέγχθηκαν για τη δράση τους έναντι της αντιγραφής του HBV, και οι περισσότερες από αυτές είναι δραστικές με υπομικρομοριακές έως χαμηλές μικρομοριακές τιμές EC50. Με τη σύνθεση αυτών των νέων HPDs επιτεύχθηκε βελτίωση του θεραπευτικού δείκτη της ένωσης-οδηγού, χωρίς ταυτόχρονη καταστολή του ανθρώπινου ενζύμου, huRNaseH1.
Ο Ιωάννης Περμενιάτης και άλλοι Έλληνες ζωγράφοι στη Βενετία κατά το πρώτο μισό του δέκατου έκτου αιώνα
Authors: Χαρχαρέ Ελένη
Published: May 2023

Με την παρούσα εργασία επιχειρείται μία συμβολή στη μελέτη του έργου του Ιωάννη Περμενιάτη, ενταγμένου στο σύνολο των Ελλήνων ζωγράφων που έζησαν στη Βενετία το α΄ μισό του 16ου αιώνα, μία περίοδο σπουδαίας καλλιτεχνικής άνθησης για την ιταλική μητρόπολη. Παρουσιάζονται οι αρχειακές και οι καλλιτεχνικές μαρτυρίες που είναι γνωστές μέχρι σήμερα για δεκαπέντε Έλληνες ζωγράφους, εκ των οποίων οι περισσότεροι είναι μέλη της Ελληνικής Αδελφότητας, που ιδρύθηκε στη Βενετία το 1498. Το κύριο μέρος της εργασίας καταλαμβάνει η παρουσίαση του έργου του Ιωάννη Περμενιάτη, ο οποίος μαρτυρείται ως μέλος της Ελληνικής Αδελφότητας το έτος 1523. Τα έργα του, τρία υπογεγραμμένα και τριάντα δύο αποδιδόμενα, εξετάζονται αναλυτικά, ενταγμένα σε εικονογραφικές κατηγορίες. Στόχος της εξέτασης αυτής είναι η ανάδειξη των ποικίλων επιρροών που δέχθηκε ο ζωγράφος, αφενός από τη βυζαντινή παράδοση και αφετέρου από ένα ευρύτατο φάσμα της δυτικοευρωπαϊκής ζωγραφικής, καθώς και ο τρόπος με τον οποίο προχώρησε στη σύνθεση των επιδράσεων αυτών και τη δημιουργία μίας ιδιαίτερης εικαστικής γλώσσας. Επιχειρείται, με άλλα λόγια, να παρουσιασθούν πτυχές της καλλιτεχνικής προσωπικότητας ενός Έλληνα ζωγράφου, που μπόρεσε να ανταποκριθεί στα αιτήματα που έθετε η τέχνη και η θρησκευτικότητα της εποχής του, μέσα στο πλούσιο σε καλλιτεχνικά ερεθίσματα αλλά και απαιτητικό σε επαγγελματικό επίπεδο περιβάλλον της Βενετίας, προσφέροντας ένα έργο στο μεταίχμιο της μεταβυζαντινής και της δυτικής ζωγραφικής.
CARDIAC ARRHYTHMIA IN PATIENTS AFTER CORONAVIRUS INFECTION: FEATURES OF THE COURSE AND THERAPY
Authors: Sergunina I. , Malygina V. , Golubeva E.
Published: May 2023

This paper presents data on the peculiarities of the course and treatment of rhythm disturbances in patients who have suffered a coronavirus infection in the cardiology department of the CHM "KB RZD-Medicine" in Tula. Among all patients who underwent therapy in a specialized cardiology department for various kinds of arrhythmias for the period from 2020 to 2022, 72% of rhythm disturbances occurred after COVID-19.

The most common arrhythmic consequences of coronavirus infection are supraventricular and ventricular extrasystole, paroxysmal form of supraventricular tachycardia and atrial fibrillation. Based on the analysis of the data obtained by us, it was revealed that complex treatment with the use of beta-blockers, cardioprotectors, sedatives, antiarrhythmic agents of class I and III has the greatest effectiveness.
Manufacturer–Retailer Relationships and the Distribution of New Products
Authors: Luo Bowen
Published: May 2023

This paper presents empirical evidence and develops a repeated-game model for manufacturer–retailer relationships and demonstrates that these relationships limit the impact of regulations.
LINGUÍSTICA COGNITIVA, QUADRINHOS E PORTUGUÊS LÍNGUA DE HERANÇA: uma mescla que deu certo
Authors: Caldeira Brízzida
Published: May 2023

Este ensaio aborda a transdisciplinaridade propiciada pela Linguística Cognitiva, nomeadamente pelas teorias da Integração Conceptual (FAUCONNIER; TURNER, 2002); categorização e recategorização em L2 (LITTLEMORE, 2015) e Modelos Cognitivos Idealizados (LAKOFF, 1987) como resposta aos desafios enfrentados em uma investigação sobre o processo de ensino-aprendizagem do português como língua de herança na França, mediado pela leitura de histórias em quadrinhos (CALDEIRA, 2021). Graças à conjugação de teorias que conversam com a LC, foi desenvolvida uma metodologia de cristalização de dados, com base no proposto por Richardson (2018), na qual cada elemento do corpus atuou como uma das facetas presentes na coconstrução dos entendimentos gerados na pesquisa.
Abordagens de ensino de língua portuguesa no livro didático: o caso das “classes gramaticais invariáveis”
Authors: Mota Rafael
Published: May 2023

Desde que as políticas públicas de aquisição e distribuição de materiais didáticos para as escolas de educação básica passaram a ser coordenadas pelo Programa Nacional do Livro Didático (PNLD), que o livro didático de língua portuguesa vem sendo objeto de estudo de diferentes perspectivas teóricas. Dentre as orientações, destaca-se a Linguística Aplicada, que também busca entender como os materiais de língua tratam metodologicamente o ensino de tópicos linguísticos. Pesquisas recentes demonstram que, em relação aos conhecimentos gramaticais, o livro didático de língua portuguesa tem mobilizado várias abordagens de ensino, o que de alguma forma interfere no modo como se ensina a língua materna na escola. Nesse sentido, o presente artigo busca investigar as abordagens de ensino das classes gramaticais invariáveis em exercícios de livros didáticos de português destinados aos anos finais do ensino fundamental publicados entre 1999 e 2020. Tendo como base teórica as reflexões de Halliday, McIntosh e Strevens (1974), como também as de Bloom et al. (1972), estudamos oito coleções de livros didáticos de língua portuguesa destinados aos anos finais do ensino fundamental e aprovados no PNLD a partir da identificação e descrição das abordagens de ensino presentes nas obras, bem como os movimentos de conservação e mudança no desenvolvimento de tais abordagens. A análise das coleções realizado a partir deste estudo de natureza documental confirmou a coexistência de abordagens descritivas e produtivas de ensino das classes gramaticais invariáveis no livro didático de língua portuguesa demonstrando que o material didático, através do tempo, procura equilibrar posturas conservadoras e inovadoras no que se refere ao ensino de gramática, o que configura lenta mudança na efetivação de um ensino de língua que valorize a ampliação de competências de uso efetivo da linguagem em diferentes contextos sociais.
ANÁLISE DE RELAÇÕES INTERSEMIÓTICAS ENTRE TEXTO VERBAL E IMAGÉTICO EM UM LIVRO DIDÁTICO DE HISTÓRIA
Authors: Milani Victor Gomes
Published: May 2023

RESUMO: Este estudo objetiva a inicializar a análise da interação entre recursos imagéticos e seus textos verbais de acompanhamento/composição presentes em um Livro Didático de História sob uma perspectiva sociossemiótica da linguagem. Para tal, foram escolhidas como ferramentas de análise as relações intersemióticas lógico-semânticas (MARTINEC; SALWAY, 2005). Foram analisados 23 recursos imagéticos e seus textos verbais de acompanhamento/composição presentes no Capítulo 1 da Unidade 1 do Livro Didático de História Historiar (Editora Saraiva). Os recursos imagéticos foram submetidos à quantificação do espaço que ocupam nas páginas do livro didático e à análise das relações existentes entre os modos semióticos visual e verbal. Os resultados apontaram para uma grande variedade de relações, com ênfase na generalidade da imagem e na especificidade do texto verbal, os quais são justificados pelo caráter pedagógico do Livro Didático de História.
ENTREVISTA COM MARIA EUNICE DE SOUZA MACIEL
Authors: Maciel Maria Eunice De Souza , Machado Cauê Fraga , Víctora Ceres
Published: May 2023

Entrevista com Maria Eunice Maciel UFRGS), concedida a Cauê Fraga Machado (UFRGS) e Ceres Gomes Víctora (UFRGS).
O ALIMENTO DA ROÇA QUILOMBOLA MEXE COM A MEMÓRIA DAS PESSOAS: A CONSTRUÇÃO DE RESISTÊNCIAS E FUTUROS EM MEIO AOS DESAFIOS PANDÊMICOS
Authors: Marcucci Ana Carolina Oliveira , Machado Cauê Fraga
Published: May 2023

Com Covid-19, o tempo do alimento ficou em evidência diante do risco da perda de parte da produção das roças quilombolas do Vale do Ribeira com o cancelamento de projetos ligados ao PNAE. Nesse cenário, a renda de quilombolas e caiçaras se viu afetada, e ações criativas foram necessárias. Para isso, parceiros auxiliaram na criação de um “consórcio de doações” junto à cooperativa local (Cooperquivale), que, com o dinheiro arrecadado, pagou pelo alimento e seu transporte, destinado à periferia de São Paulo. O objetivo aqui é olhar para essa experiência de resistência e formação de alianças para o enfrentamento de dificuldades e fome em meio à crise pandêmica a partir da roça quilombola. A doação de alimentos da roça está para além de uma ação solidária, diz sobre conhecimentos ancestrais e segurança alimentar. Trata-se de uma estratégia que traz à tona temporalidades, memórias e afetos, e compõe mais um passo na manutenção da vida e na construção de possibilidades de futuros em comum.
Fissure Formation in Rice During Conventional and Microwave Drying
Authors: Bruce Rebecca M. , Atungulu Griffiths G. , Bautista Rustico C.
Published: May 2023

Highlights

Rice fissuring and breakage have a negative impact on milling quality and market value.

Fissure formation during microwave drying may be a combination of different phenomena.

The phenomena include the buildup of high internal temperatures and pressures in the kernel and stresses generated from a higher heat flux of liquid at high microwave intensities.

Abstract. Rice fissuring and breakage have negative economic impacts on rice processing. Many advances in multi-pass conventional rice drying technologies have not been successful in completely preventing rice fissure formation. Thankfully, novel drying technologies such as the 915 MHz industrial microwave have been shown to have a great potential for rice drying and may reduce rice fissuring (or increase head rice yield) due to the volumetric heating property of microwaves. This review assessed the mechanism of fissure formation in conventionally and microwave-dried grains to provide recommendations for managing fissure formation during the drying of freshly harvested paddy rice. Literature search indicates that fissure formation during microwave drying may be mainly a combination of different phenomena, such as the buildup of high internal temperature and pressure in the kernel, stresses generated from a higher flux of liquid at high microwave intensities, and other mechanisms that are yet to be discovered. Fissure formation in rice during conventional drying of the rice kernels can be explained using the glass transition phenomenon. Keywords: 915 MHz microwave, Fissures, Glass transition Phenomenon, Rice, Volumetric heating.
Visual Assessment of Factors Affecting Reverse Pressure Gradients in Liners Using a Simulated Milking Device
Authors: Enokidani Masafumi , Inui Yoji , Kondo Hitoshi , Kawai Kazuhiro , Shinozuka Yasunori , Imao Kento
Published: May 2023

Highlights

In a simulated milking device, liner internal diameter, pulsation setting, and vent location all affect backflow.

Junction point internal diameter affects backflow more than other factors.

Vent location has no effect on backflow if the liner internal diameter is large.

Backflow is strong with simultaneous pulsation, regardless of other factors.

Abstract. The backflow of milk resulting from reverse pressure gradients in liners can cause mastitis. In this study, we hypothesized that liner internal diameter, vent location, and pulsation setting can induce backflow. We therefore attempted to clarify the mechanism of backflow using a flow simulated device. We visually analyzed the effects on backflow of the liner junction point (JP) (i.e., the border from the liner to the short milk tube), the liner inlet point (IP) (i.e., a distance of 63 mm from the end of the short milk tube), vent location, and pulsation setting, using high-speed video recordings of water flow in clear silicone liners at seven flow rates (1.0, 1.5, 2.0, 2.5, 3.0, 3.5, and 4.0 kg min-1/quarter). The actual flow rate was approximately half of the flow meter set value due to the effect of the pulsation closing phase (C+D phase) on quarter level. The results showed that the degree of backflow in liners increased considerably with an increase in flow rate and a decrease in liner internal diameter. The degree of backflow was affected considerably more by JP internal diameter than by IP internal diameter, pulsation setting, or vent location. The degree of backflow was not affected significantly by short milk tube vents and mouthpiece vents when JP internal diameter was larger. However, the degree of backflow was very strong when simultaneous pulsation was used, even at low flow rates. The findings showed that the JP internal diameter should be >13.0 mm, IP internal diameter should be >11.0 mm, the pulsation rate should be 60 pulses/min, and the pulsation ratio should be 60:40 when the alternative pulsation setting is used. This information might be useful for preventing intramammary gland infection. Keywords: Liner internal diameter, Pulsation setting, Reverse pressure gradients, Simulated milking device, Vent location.
Multiple surgical excision for recurrent primary mediastinal liposarcoma
Authors: Liu Z , Du M , Liang Y , Gao Y
Published: May 2023

Liposarcoma is one of the most common soft tissue malignancies, occurring mostly in the extremities and retroperitoneal cavities, and occasionally in the mediastinum of the thoracic cavity. Here, we present a patient undergoing four operations over a period of 33 years because of repeated recurrence of mediastinal liposarcoma. A 34-year-old woman underwent her first surgery for mediastinal liposarcoma in 1986. Ten years later, a recurrent tumour was found during follow-up. The patient underwent a second operation for complete excision. The pathology was liposarcoma, partly myxoid and partly dedifferentiated. The patient remained tumour-free for 22 years, until one year ago, when a third operation was performed to resect the recurrent tumour which was myxoid liposarcoma. Unfortunately, upon computed tomography imaging three months later a fatty mass was spotted which increased rapidly in size. The patient underwent further surgery to achieve radical excision of the recurrent liposarcoma. Postoperative recovery was uneventful, and a follow-up examination showed no recurrence to date. For mediastinal liposarcoma, surgical removal is the treatment of choice. Considering that the tumour is prone to recurrence, the lesion should be removed as thoroughly as possible in the first operation. If the tumour recurs repeatedly, multiple resections are beneficial to patient survival on most occasions.
Heller myotomy versus Heller myotomy with fundoplication in patients with achalasia: a systematic review and meta-analysis
Authors: Santoro G , Sheriff N , Noronha J , Nunes QM , Tandon A
Published: May 2023

Introduction

Heller myotomy (HM) remains the gold standard procedure for achalasia. The addition of different types of fundoplication to HM has been debated in several studies. Given the contradictory reports, this meta-analysis was undertaken to compare different outcomes after HM and HM with fundoplication (HMF).

Methods

An electronic search was performed among five major databases (PubMed, Ovid, Scopus, Cochrane Library, Google Scholar) from inception to October 2019, identifying all randomised and non-randomised studies comparing HM with HMF. Two authors searched electronic databases using the keywords ‘achalasia’ AND ‘dysphagia’ AND ‘gastroesophageal reflux’ and all data were pooled for random-effects meta-analysis. The primary and secondary outcomes were gastroesophageal reflux and dysphagia, respectively.

Results

A total of six studies were included and involved 576 patients comparing HM and HMF. There was no statistically significant difference between gastroesophageal reflux in the HM vs HMF group (21.3% vs 22.9%, RR 1.32, 95% CI 0.60–2.88, p = 0.49). There was a slightly higher incidence of dysphagia observed in HM vs HMF (14.8% vs 10.8%, RR 1.54, 95% CI 0.98–2.41, p = 0.06).

Conclusions

There was no statistically significant difference in long-term outcomes between a group of patients undergoing HM and a group who underwent HM with fundoplication.
Knowledge assessment and outcomes of otolaryngology practice amidst the COVID-19 pandemic in a busy ENT department
Authors: Agarwal D , Agarwal M , Chandra M , Mishra A , Agarwal R
Published: May 2023

Introduction

Otolaryngology health personnel are at high risk of acquiring COVID-19 disease and, hence, are likely to have high stress levels. This study was designed to evaluate the feedback of otolaryngology healthcare workers in ENT departments who are managing patients in the coronavirus pandemic.

Methods

A questionnaire focused on all aspects of healthcare delivery was completed by otolaryngology healthcare workers.

Results

The findings, based on statistical analyses, included high stress levels and inadequate disease-related information in these workers.

Conclusions

Healthcare authorities need to take care of issues related to mental health in healthcare professionals in addition to spreading awareness about safe practices. Further studies are needed to continuously monitor feedback from personnel as the coronavirus pandemic unravels in the future.
Can virtual reality reduce procedural anxiety?
Authors: Dobbs Tom
Published: May 2023

How can VR technology be used to calm anxious patients down? Our Technologist investigates.
Learning from lions: frugal surgical innovation in the wild
Authors: Pizzi R
Published: May 2023

Fresh from his inspiring talk at the Future Surgery show, Romain Pizzi tells us about coming up with unique solutions on a shoestring to treat his wildlife patients. Can surgeons learn a thing or two?
Emergency referrals to a paediatric dental A&E service in London: where do we stand post-pandemic?
Authors: Pathak Divya , Mamdani Sajida , Bhujel Nabina
Published: May 2023

Introduction

The paediatric dentistry department at St Thomas’ Hospital transformed its walk-in emergency service to an urgent dental centre during the COVID-19 pandemic, accepting referrals via the NHS 111 service. There are conflicting ethical duties for tertiary care clinicians managing paediatric dental patients. This study measured the current activity levels of the dental emergency service at St Thomas’ Hospital, the appropriateness of NHS 111 referrals, the proportion of referrals accepted for care and the outcomes of those accepted referrals.

Methods

A retrospective service evaluation was undertaken including 125 patients referred by the NHS 111 service to the dental emergency clinic at St Thomas’ Hospital between 1 September and 29 October 2021.

Results

Half (50%) of the patients seen were aged between 0 and 5 years. A quarter (24%) of referrals were true dental emergencies. Patients were referred for isolated dental pain (58%), facial swelling (25%), trauma (13%), broken fillings (3%) and other conditions (2%). Three-quarters (74%) were accepted for treatment. Most accepted patients were added to waiting lists for treatment under general anaesthesia (66%), local anaesthesia (5%) or inhalation sedation (4%). Two-thirds of accepted patients (67%) were not registered with a dentist while over three-quarters of rejected patients (79%) had their own dentist in primary care.

Conclusions

Following the pandemic, paediatric dental emergency services continue to be overwhelmed by children requiring non-urgent dental care. Solutions to deteriorating patient access are crucial, ensuring that provision of care remains ethical and that those who require urgent dental care are prioritised.
Patients, populations and partnerships: pillars supporting the promotion of health
Authors: Thomson Peter
Published: May 2023

Patient and population health are influenced by a myriad of factors outside the traditional biomedical model of disease. Health partnerships, based on a collaborative approach and involving both individuals and institutions, provide an important mechanism to improve health service delivery and enhance health outcomes. In order to be successful in delivering health promotion (and therefore improve health itself), the supporting pillars of patients, populations, and relevant and effective partnerships are of fundamental importance in contemporary practice to deliver better health outcomes for our communities.
Analysis of Slope Stability On the Subulussalam - Lipat Kajang Road
Authors: Ardika Jumelia , Yunita Halida , Sungkar Munira , Akmal Abdiel Khaleil
Published: May 2023

Landslides frequently occur on the Subulussalam – Lipat Kajang road segment as a result of heavy rain that lasts for a long time. In addition to landslides, the Subulussalam area is vulnerable to earthquakes because it was once the site of a tectonic earthquake with a magnitude of 6.7 on the Richter scale. The extent of the destruction, as well as the number of victims, was caused by a lack of emergency planning. This research aims to see if the slope conditions are safe when subjected to an earthquake load and if appropriate handling methods can be found based on the soil characteristics at the research site. The slope is considered dangerous after being given an earthquake load of 1.044; according to the results of the safety factor value in the existing condition, sheet pile strengthening is required. The slope has been reinforced with sheet piles and is now in a safe state of 1,940Keywords : Slope stability, safety factor, sheet pile.
Comparison Study the Modeling of Limiting Current in the Magneto Electrodeposition of Vanadium using Neural-Wiener Model and Feed Forward Neural Network
Authors: Nulhakim Lukman , Sasmita Ismoyo Aji , Rozana Monna , Sudibyo Sudibyo
Published: May 2023

Vanadium has long been used as a corrosion-resistant coating, including as a metal alloy for battery cathodes. However, batteries discovered with non-smooth cathode surfaces due to the fabrication process have a short battery life. So, a cathode coating stage is required via the electroplating method under the influence of a magnetic field or Magneto Electro Deposition (MED). Knowing the limiting current in MED is very important because the optimum mass transport achieves at the limiting current (iB). The smoothest and most compact electrodeposit surface will occur at this limiting current. In this study, Feed Forward Neural Network and Neural-Wiener are suggested and compared as a nonlinear modeling approach to determine the ideal limiting current because of their strong capacity to anticipate the link between input and output from experiment data. The Levenberg-Marquadt optimization technique with hidden neurons was used to evaluate and compare the modeling capabilities of two neural networks, the Feed Forward Neural Network, and the Neural Wiener. The results of this study are presented as a comparison of the Mean Square Error (MSE) values obtained from the nonlinear modeling of two artificial neural network algorithms. The algorithm that models the ideal current limiting has the lowest MSE value (iB).
Developing a Spatial Mathematical Model for Assessing the Rate of Natural Forest Changes
Authors: Dahlan Dahlan , Jaya I Nengah Surati , Saleh Muhammad Buce , Puspaningsih Nining , Affan Muzailin
Published: May 2023

Establishing a spatial mathematical model that uses diverse data types such as ratio data, interval data, and ordinal and nominal data is a challenge. This paper describes how the mathematical model of the rate of natural forest cover change was developed by considering the causes and/or driving forces that come from the society's biophysical and/or socioeconomic aspects. The main objective of this research is to establish a spatial mathematical model using the environmental and socioeconomic variables that play a significant role in determining the rate of natural forest cover change. From a number of variables considered in the analysis, coupled with any other reason, the rate of natural forest cover change (y), in units of ha per year), this study found that there are 10 potential variables, namely the proximity of the road (x4), the proximity of the river (x5), the proximity of the settlement (x6), proximity from the regency capital (x8), the proximity of the capital city of the district (x9), proximity of the edge of the forest in 2015 (x11), the proximity of the plantation area in 2009 (x12), the proximity of the plantation in 2015 (x13), slope class (x16), and elevation class (x17). The standardization process successfully transformed the non-ratio data type into a ratio data type. Using the standardized data, the study obtained spatially mathematical models that are reliable in estimating the rate of forest cover change, namely y = 0.017 + 0.00040x9 with SR of 17.3% and R2 is 88.0%. The study concludes that the most significant factor affecting the natural forest cover change in the study site is the proximity of the district's capital city (x9). Therefore, a spatial mathematical model can facilitate the government in monitoring forest cover.
Identification of species, intensity, and prevalence of Vannamei shrimp (Litopenaeus vannamei) ectoparasites in traditional ponds North Gorontalo
Authors: Juliana Juliana , Koniyo Yuniarti , Dangkua Ike Nursyafitri , Abd. Rahman Indika
Published: May 2023

Vannamei shrimp (Litopenaeus vannamei) production continues to decline due to parasitic attacks on ponds in North Gorontalo Regency. Ectoparasites are one of the factors that can cause failure in the cultivation of vannamei shrimp. This study aims to determine the type of ectoparasites, intensity, and prevalence of vannamei shrimp cultured in traditional ponds in the North Gorontalo Regency. The sampling of the research was carried out at five research stations. The sampling of this research was taken at random in 5 plots of ponds and the total number of shrimps as many as 150 tails. At each station, samples were taken of 30 vannamei shrimp. Sampling using fishing gear in the form of nets. The observed samples were 8-10 cm in size alive. Observations of ectoparasites were carried out microscopically using a Zeis Binocular microscope with 10x magnification. Data analysis used descriptive analysis of the types of ectoparasites, intensity, and, the prevalence of ectoparasites found. The results of the study found four types of ectoparasites found in vannamei shrimp, namely Zoothanium sp., Epistylis sp., Carchesium sp., and Vorticella sp. The intensity of ectoparasite attack on shrimp was categorized as low to moderate infection, namely 4-7 individuals/shrimp. The prevalence rate is 80-100% with the category of moderate to very severe infection.Keywords:EctoparasitesPrevalenceIntensityVannamei shrimp
Diversity and distribution of fish in the Lokop river, Leuser Ecosystem Area, Indonesia
Authors: Maghfiriadi Furqan , Firdus Firdus , Sarong M. Ali , Zulfahmi Ilham , Batubara Agung Setia
Published: May 2023

Lokop is one of the villages in Serbajadi District, East Aceh Regency, Aceh Province. The village has a watershed named the river Lokop. This river is located in the Leuser Ecosystem Area which is inhabited by various aquatic biota, especially fish, with the level of diversity and distribution patterns that need to be studied and analyzed conoftened. This study used the purposive sampling method, with the parameters being the level of diversity and distribution patterns of fish in the Lokop river. Data collection was carried out at 5 observation stations based on the typology of river habitat, each station was divided into three substations representing parts of the basin, river bank and river basin approximately 50 m apart. Fish sampling is carried out at each station using a plot of 10 x 10 m2. The number of plots at each station is 9 plots with a total of 45 plots. The results showed that the diversity index (H') value of fish in the Lokop river was 2.39 in the moderate category and the distribution pattern of fish in the Lokop river has a uniform pattern and clusters. Out of a total of 17 species obtained, 8 species (47%) were clustred, 8 species (47%) were uniformly distributed and 1 species (6%) could not be analyzed because only one individual was found.Keywords:FishRiverDiversityDistribution
La difusió actual de l’aplicació escolar de la pedagogia Montessori a Catalunya
Authors: Scippo Stefano , Cañigueral-Viñals Daniel
Published: May 2023

Introducció. Aquest article té l’objectiu d’oferir una llista actualitzada de centres que constaten aplicar la pedagogia Montessori a Catalunya. Per introduir l’estudi, es recorren les principals etapes històriques de l’arribada de la pedagogia Montessori al territori català i el seu desenvolupament, bruscament interromput per la Guerra Civil.
Mètode. Després d’una contextualització històrica, es presenten els resultats d’una enquesta empírica que, a partir de diferents fonts, identifica els centres Montessori del territori i estima el nombre d’alumnes que hi van finalitzar els seus estudis en els darrers anys.
Resultats. L’enquesta identifica 22 centres educatius Montessori, dels quals: a) 5 estan afiliats a l’AME (Associació Montessori Espanyola); b) 13 no hi estan afiliats, però tenen professorat amb formació Montessori i semblen haver triat una educació exclusivament o predominantment Montessori; c) 4 han optat per una educació Montessori integrada amb altres enfocaments educatius.
Discussió. L’estudi suggereix la necessitat de continuar observant el desenvolupament, la qualitat i l’eficàcia de l’aplicació de l’educació Montessori a Catalunya, per valorar un moviment pedagògic que ha viscut un moment molt important del seu desenvolupament en aquesta terra i que, avui dia, està vivint una vitalitat renovada.
Focusing pattern of the Laguerre–Gaussian beam with polarization mixing helical-conical phase modulation
Authors: Lu Chenxu , Li Jinsong , Zhang Haoran , Li Show , Gao Xiumin
Published: May 2023

This paper focuses on the focusing pattern of the Laguerre–Gaussian (LG) beam with polarization mixing helical-conical phase modulation, which is based on the vector diffraction theory. The results show that the topological charge number l can sensitively control the intensity of the intensity peaks. The focal spot will split along the optical axis under different polarization parameters P. When l=1, the spot position and the peak intensity can be modulated by changing the polarization parameter P. The truncation parameter β makes the focusing spot form an optical trap. By adjusting the eccentricity parameter K, the opening direction of the optical trap can be well controlled. These results may be helpful in optical applications such as optical manipulation, optical focusing, and optical information transmission.
Refractive index improvement of commercial chalcogenide glasses by external doping with Ag and Pb
Authors: Li Jialin , Xia Kelun , Gu Jierong , Zheng Wenfeng , Zhang Jingwei , Liu Yongxing , Yang Zhiyong , Shen Xiang , Liu Zijun
Published: May 2023

The refractive index of commercial chalcogenide glasses (ChGs) available in the market is generally 2.4 to 2.7, which is relatively low and has huge room for improvement. In this paper, different ratios of Ag/Pb were doped into commercial glasses by the melt-quenching method to substantially increase their refractive index. The refractive index of the commercial Ge28Sb12Se60 glass was increased from 2.6 to 3.05 by external doping with 20 atomic percentage (at%) of Ag. And the refractive index of commercially available Ge33As12Se55 glass was increased from 2.45 to 2.88 by external doping with 9 at% of Pb. These improvements effectively reduce the thickness of commercial lenses at the same radius of curvature and focal length. The physical and optical properties of commercial glasses doped with Ag/Pb in different proportions were systematically characterized.
Liquid crystal micro-Fresnel zone plate with fine variable focusing properties
Authors: Tsukamoto Yuji , Ozaki Masanori
Published: May 2023

This study presents a liquid crystal micro-Fresnel zone plate (LC-MFZP) with fine variable focusing properties. The LC-MFZPs are fabricated via photochemical processes without any mechanical process. The focusing properties are investigated through numerical simulations and experiments. LC-MFZPs can generate a focusing spot with a specific incident wavelength such that the transmitted phase difference between their adjacent ring zones is π rad. When this difference is changed by the electrical reorientation of the LCs, the focusing spot disappears because the diffraction condition is no longer satisfied. Subsequently, another focusing spot at a specific incident wavelength is generated to satisfy the diffraction condition. The positions of these focusing spots differ because the focal lengths depend on the incident wavelength. Consequently, LC-MFZPs can be used to electrically control the focal length. This study may find applications in optical manipulation and optical trapping.
Charge midwives’ awareness of and their role in promoting respectful maternity care at a tertiary health facility in Ghana: A qualitative study
Authors: Dzomeku Veronica Millicent , Mensah Adwoa Bemah Boamah , Nakua Emmanuel Kweku , Agbadi Pascal , Okyere Joshua , Aboagye Richard Gyan , Donkor Peter , Lori Jody R.
Published: May 2023

Background

Evidence suggests that the implementation of respectful maternity care (RMC) interventions is one of the surest and most effective means of minimising mistreatment during intrapartum care services. However, to ensure the successful implementation of RMC interventions, maternity care providers would have to be aware of RMC, its relevance, and their role in promoting RMC. We explored the awareness and role of charge midwives in promoting RMC at a tertiary health facility in Ghana.

Methods

The study adopted an exploratory descriptive qualitative study design. We conducted nine interviews with charge midwives. All audio data were transcribed verbatim and exported to NVivo-12 for data management and analyses.

Results

The study revealed that charge midwives are aware of RMC. Specifically, ward-in-charges perceived RMC as consisting of showing dignity, respect, and privacy, as well as providing women-centred care. Our findings showed that the roles of ward-in-charges included training midwives on RMC and leading by example, showing empathy and establishing friendly relationships with clients, receiving and addressing clients’ concerns, and monitoring and supervising midwives.

Conclusion

We conclude that charge midwives have an important role to play in promoting RMC, which transcends simply providing maternity care. Policymakers and healthcare managers should ensure that charge midwives receive adequate and regular training on RMC. This training should be comprehensive, covering aspects such as effective communication, privacy and confidentiality, informed consent, and women-centred care. The study also underscores a need for policymakers and health facility managers to prioritise the provision of resources and support for the implementation of RMC policies and guidelines in all healthcare facilities. This will ensure that healthcare providers have the necessary tools and resources to provide RMC to clients.
Environmental Journalism: Reporting on Environmental Concerns and Climate Change in India, D. S. Poornananda (2022)
Authors: Alden Salam Ibrahim Abdelkarim
Published: May 2023

Review of: Environmental Journalism: Reporting on Environmental Concerns and Climate Change in India, D. S. Poornananda (2022)

New Delhi: SAGE Publishing India, 368 pp.,

ISBN 978-9-35479-338-7, h/bk, ₹1337.00
ELDERLY PEOPLE IN THE MODERN WORLD: NEW CHALLENGES AND OPPORTUNITIES FOR ADAPTATION (BASED ON THE MATERIALS OF THE CONFERENCE OF YOUNG SCIENTISTS AT THE IS FCTAS RAS)
Authors: Kornilova Marina V.
Published: May 2023

The aggravation of the sanitary and epidemiological situation in the world has forced humanity to rethink life values and priorities, reconsider the methods of communication, and pay special attention to the older generation. Unprecedented bans have turned the established way of life upside down, and socio-economic upheavals forced us to think about rights and ways to exercise them. Past changes and new challenges makes important tasks the authorities and the scientific community either. The search for effective strategies for maintaining health, active longevity and maintaining the quality of life, understanding the need for social participation, the community of the elderly, the specifics of inclusion in the digital environment, ensuring security and the principles of equality for the older generation, have reached the peak of actualization. As a result of the work of the section, it was possible to consider a whole range of the above-mentioned problems and challenges for the older generation, and discuss the possibilities of adaptation.
SOCIAL MEDIA AS A NEW INSTITUTIONAL STRUCTURE FOR COMMUNICATION
Authors: Sergeeva Zoya N.
Published: May 2023

The role of social media in modern communications is difficult to underestimate: from interpersonal correspondence, user-generated content quickly spilled over into a sociocultural phenomenon. On the one hand, we can talk about expanding the possibilities of using the global network, and on the other hand, and this is fundamental, social media have become an independent means of mass communication, with much more multifunctional tools for “getting” into the core of the target audience. The purpose of the article is to reveal the phenomenon of computer-mediated communication of young people through the use of social media and identify their functions. Based on the results of the questionnaire survey "Internet communication as a factor in the formation of the information culture of a new generation of young people", a hypothesis was put forward that social media claim the position of a universal ecosystem. The institutionalization of social networks provides for the structuring of social practices, while the criterion for institutionalization is their structural variability (a global service system in which it is possible to satisfy scientific, educational, sociocultural, consumer and other needs). The closed ecosystem of social media, developing a targeted approach to the demonstration of user content, largely controls the mind, shaping both creative and conformist behavior, giving birth to a new generation of people – generation social young. Modern youth, based on survey data, has prioritized all mediated communication in social networks, linking the online space with everyday life. The new - "digital" generation has moved the usual social practices to social networks, institutionalizing them. In addition to informal communication, social networks have become one of the main channels of interaction between a teacher and a student, despite the fact that correspondence through personal pages is not welcomed by the administration of educational institutions for several reasons. Formally, such communication remains outside the system of corporate communications and can be easily removed or become destructive. On the other hand, chatting creates a feeling of friendly communication, which often contributes to the development of trusting relationships and has a positive effect on the learning process. The article attempts to scientifically comprehend social media from the point of view of the usual practices of youth communication in social networks and their new institutional structure. The identified and described functions of social media ("Communication", "Consolidation", "Replication of content", "State", "Finding", "Establishing contacts", "Image") probably contribute to the development of theoretical sociological foundations for studying the phenomenon of institutionalization of social media.
Disruptive solutions for fintechs and their risks : Hungarian case studies
Authors: Póta Cserne Panka , Becsky-Nagy Patrícia
Published: May 2023

Az elmúlt években a diszruptív technológiák a pénzügyi szolgáltatásokra gyakorolt tovagyűrűző hatások révén átalakították a hagyományos pénzügyi ágazatot. A kutatás célja annak feltárása, hogy a vizsgált vállalatok milyen diszruptív megoldásokat és üzleti modelleket alkalmaznak, és ezek milyen új potenciális kockázatokat jelentenek. A szerzők kvalitatív kutatási módszertant alkalmaztak négy magyar FinTech vállalat esetét vizsgálva. A legjelentősebb magyarországi FinTech területeken működő vállalatokat választották ki: egy elektronikus fizetési szolgáltatót, egy nyílt banki és adataggregációs céget, egy online fizetési kockázatelemzőt és egy összehasonlító platformot üzemeltető céget. Kutatási eredményeik megerősítik, hogy a szakirodalomban említett, széles körben elterjedt diszruptív technológiák és üzleti modellek a vizsgált vállalatok gyakorlatában is megvalósulnak, amelyek számos újszerű kockázatot is hordozhatnak. A legfontosabb kockázatok az érzékeny pénzügyi és ügyféladatok esetleges kiszivárgásával, valamint a mesterséges intelligencia alkalmazásából adódó kontrollvesztéssel kapcsolatosak.
How green and digital transformation shapes industries
Authors: Herczeg Balázs , Pintér Éva , Bagó Péter
Published: May 2023

A digitális átalakulás minden iparágban és üzleti szektorban kihívást jelent. Jelen cikkben a digitális átalakulás kiterjedt, sokrétű és szigetszerű szakirodalmának célzott multidiszciplináris és horizontális áttekintését nyújtják át a szerzők, tisztázva a jelenségnek a GreenTech és a fenntarthatóság szempontjából történő vizsgálati peremfeltételeit. Ugyanis egyértelmű elmozdulás tapasztalható a gazdasági döntéshozatalban a fenntarthatóság irányába, amely köré a GreenTech megoldások épülnek. Közelmúltbeli tanulmányok rávilágítottak a zöld digitalizációs megoldások fontosságára, hangsúlyozva a (digitális) technológia jelentőségét a fenntarthatósági kihívások kezelésében, valamint az üzleti és lakossági felhasználásban. Következésképpen azt találták, hogy a digitális átalakulás terjedésének felgyorsulása és a GreenTech megoldások ebben betöltött szerepe a közeljövőben jelentősen növekedni fog. Nem létezik energiaátmenet digitalizáció nélkül.
ANALISIS KESESUAIAN IMPLEMENTASI PROGRAM GERAKAN LITERASI DI SEKOLAH BERDASARKAN DESAIN INDUK GERAKAN LITERASI SEKOLAH (STUDI KASUS DI SMA NEGERI 2 BLITAR)
Authors: Hidaya Almer Samantha , Nafisah Syifaun
Published: May 2023

The School Literacy Movement is a person's ability to access, understand, and use information and media intelligently. This movement is an effort to make schools educational institutions so that students are literate. The regulation of the main design of this movement is in Design of the School Literacy Movement. This study aims to determine the suitability of implementing the school literacy movement program based on the guidelines in the Master Design of the School Literacy Movement. This research is a mixed method research with quantitative and qualitative approaches. The data-collecting methods are interviews, observation, and documentation at SMA Negeri 2 Blitar. To analyze the data used, Milles and Huberman's theory through 3 steps; data reduction, data presentation, and conclusion. The validity test in this research uses triangulation and member checks. The decision of the study is the implementation of the School Literacy Action program in SMA Negeri 2 Blitar generally was appropriate with the Main Design of School Literacy Action. SMA Negeri 2 Blitar has implemented most of the program of school literacy criteria in the physical environment, socio-affective environment, academic environment, and stage of development. The achievement of implementing the School Literacy Action program in SMA Negeri 2 Blitar was 90,63 %. The researcher suggests that it needs to provide books and reading materials for the student's parents or visitors in the school environment, except classrooms, such as corridors and the head's office, and determine some required books to be read by the school members. Moreover, schools should give special attention to the XII grade students in the second semester and emphasize literacy learning against the awareness of each individual.
Digital Culture dan Smart Madrasah dalam Implementasi Program Pembelajaran sebagai Madrasah Aliyah Riset dan Teknologi
Authors: Nasrudin Nasrudin
Published: May 2023

Tujuan – Tujuan penelitian ini untuk mendeskripsikan digital culture dan smart madrasah dalam implementasi program pembelajaran sebagai Madrasah Aliyah riset dan teknologi di MAN 1 Pasuruan.
Metode – Penelitian ini menggunakan pendekatan kualitatif. Desain penelitian studi kasus. Pengumpulan data melalui wawancara, observasi, dan dokumentasi. Data juga dapat dikumpulkan melalui studi literatur dan analisis dokumen terkait dengan implementasi pembiasaan disiplin di MAN 1 Pasuruan. Adapun teknik analisis data menggunakan analisis tematik untuk mengidentifikasi tema dan pola dari data kualitatif, serta teknik analisis kuantitatif seperti statistik deskriptif untuk menganalisis data kuantitatif yang terkumpul dari angket siswa. Sedangkan validitas dan reliabilitas data ditingkatkan melalui triangulasi data.
Hasil – Hasil studi kasus menunjukkan bahwa konsep digital culture dan smart city yang digaungkan oleh pemerintah dan Kemenag RI dalam rangka menyongsong era Industri 4.0 dan Society 5.0 telah diejawantahkan secara praktis oleh MAN 1 Pasuruan dalam program-programnya. Sebagai Madrasah Riset dan Teknologi, MAN 1 Pasuruan secara nyata telah mengimplementasikan beberapa program yang memenuhi kriteria digital culture dan smart city. Oleh karena itu, tidak berlebihan bila MAN 1 Pasuruan menyatakan diri telah memiliki karakter digital culture dan mampu berperan sebagai pionir smart madrasah.