bluuebunny/crossref_metadata_2025 huggingface dataset:
Предиктори утримання синусового ритму в пацієнтів із пізньою персистентною фібриляцією передсердь після електричної кардіоверсії під час 6-місячного проспективного спостереження
Authors: Skybchyk Ya. V. , Zharinov O. J.
Published: September 2023

The aim – to study the predictors of sinus rhythm (SR) maintenance in patients with persistent atrial fibrillation (AF) and duration of AF episode ≥90 days at 6-months follow-up after elective direct current (DC) cardioversion.Materials and methods. The cohort single-center study analyzed clinical and instrumental data from 59 persistent AF patients with duration of its episode ≥90 days (up to 12 months), who underwent an elective DC cardioversion. At 6-months follow-up, patients were subdivided into the groups depending on SR maintenance: 32 (54 %) patients with a maintained SR (G1), and 27 (46 %) patients with a failure to maintain SR (G2).Results. G2, as compared to G1, demonstrated more advanced heart failure (stage C occurred in 74 % and 44 %, respectively [p=0,019]). According to transthoracic echocardiography (TTE) data, G1, as opposed to G2, was characterized by better baseline structure parameters of left heart chambers, particularly the diameter of left atrium (LA), end-diastolic and end-systolic volumes left ventricular (LV) volumes, higher LV systolic function (by LV ejection fraction [EF]), and the majority of the cases without or with mild pulmonary hypertension (PH). Transesophageal echocardiography data suggested the cases of LA spontaneous (echo) contrast and LA appendage flow velocity (LAAFV) ≤ 40 cm/s to be more frequent in G2, in contrast to G1. We revealed the following predictors of SR maintenance after DC cardioversion at 6-months follow-up: higher LV EF (OR 1,07 (95 % CI 1,01–1,13); р=0,021); LAAFV > 40 cm/s (OR 4,33 (95 % CI 1,06–17,78); р=0,042), and less advanced PH (OR 0,24 (95 % CI 0,06–0,93); р=0,038). TTE data from G1 at 6-months follow-up after DC cardioversion suggested the reverse remodeling of both atria (the decrease of LA diameter, LA and right atrium volumes and their indexes). Additionally, G2 demonstrated a worsening in LV systolic function (the rise of LV end-systolic volume and decrease of LV EF), as opposed to G1. Moreover, at 6-months follow-up, G2 patients presented with more advanced severity of PH, as well as mitral and tricuspid regurgitation, in contrast to G1.Conclusions. Better LV systolic function, LAAFV > 40 cm/s and less advanced PH were the predictors of SR maintenance in patients with persistent AF and duration of its episode ≥ 90 days at 6-months follow-up after elective DC cardioversion. The SR maintenance at 6-months follow-up associated with the reverse remodeling of let heart chambers and right atrium. On the contrary, a failure to maintain SR associated with the decrease of LV systolic function, and more advanced PH, mitral and tricuspid regurgitation.
Pomiędzy dwiema nagrodami im. ks. Idziego Radziszewskiego: od profesora Andrzeja Stelmachowskiego do ks. profesora Józefa Krukowskiego
Authors: Sawczuk Mieczysław
Published: September 2023

Tekst stanowi wprowadzenie do t. 5 "Teka Komisji Prawniczej PAN Oddział w Lublinie" poświęconego prof. Krukowskiemu.
Rekurs do Najwyższego Trybunału Sygnatury Apostolskiej z tytułu nielegalności aktu administracyjnego
Authors: Miziński Artur
Published: September 2023

Wśród środków odwoławczych od wadliwych aktów administracyjnych w aktualnych przepisach prawnych Kościoła katolickiego należy wyróżnić środki pozahierarchiczne i hierarchiczne. Stronami rekursu sporno-administracyjnego są: kongregacja Kurii Rzymskiej, jako organ władzy wykonawczej będący stroną pozwaną, i konkretna osoba fizyczna lub prawna wnosząca rekurs, która posiada zdolność prawną i zdolność do czynności prawnej oraz szczególną legitymacje do występowania w charakterze podmiotu wnoszącego konkretny rekurs. Przedmiotem rekursu do drugiej sekcji Sygnatury Apostolskiej jest akt administracyjny wydany przez kompetentną dykasterię Kurii Rzymskiej. Prawodawca ustanawia, że motywem rekursu sporno-administracyjnego może być jedynie nielegalność aktu administracyjnego, czyli naruszenie jakiegoś prawa in procedendo vel in decernendo.
Pojęcie i rola kodyfikacji w systemie prawa. Wybrane zagadnienia
Authors: Sawczuk Mieczysław , Konarski Marcin
Published: September 2023

Niniejszy artykuł stanowi próbę syntetycznego ujęcia problemów związanych z pojęciem, postaciami i rolą kodyfikacji w demokratycznym państwie prawa. Kodyfikacja stanowi fundament porządku prawa powszechnie obowiązującego w państwie w zakresie określonej dziedziny unormowań. Kodeks zaś jest najwyżej cenioną przez naukę prawa formą systematyzacji norm prawnych w danej gałęzi prawa.
Structured Multidisciplinary work Evaluation Tool (SMET) questionnaire: Translation, cultural adaptation and psychometric evaluation of the Persian version
Authors: Hosseini Zahra Sadat Javadi , Mokhtarinia Hamid Reza , Haraldsson Patrik , Gabel Charles Philip
Published: September 2023

BACKGROUND: To assess relevant environmental conditions in any work-setting requires a multidisciplinary perspective that is practical, valid, and reliable. This includes the physical, environmental, and psychosocial risk-factors. The Structured Multidisciplinary work Evaluation Tool (SMET) questionnaire simultaneously considers multiple work-related demands. OBJECTIVE: This study translated and culturally adapted the SMET into Persian and evaluated its psychometric properties in Persian industrial workers. METHODS: Cross-sectional translation and cross-cultural adaptation in five standardized phases. A convenience sample (n = 211) recruited from an industrial-occupation setting completed: the SMET; and the Rapid Upper Limb Assessment (RULA), and National Aeronautics and Space Administration Task Load Index (NASA-TLX) criteria; plus light and noise levels were concurrently assessed. Psychometric properties included: validity, with face (from confirmed language clarity, simplicity, and readability), content (via the content validity index, CVI, for equivalency and relevancy), criterion (through Pearson’s r correlation with relevant criteria), and construct (through known group validity between participants with/without work-related musculoskeletal disorders, WMSDs); internal consistency (Cronbach’s α); and test-retest reliability (intraclass correlation coefficient, ICC2.1). RESULTS: Validity was confirmed with: face through the adaptation; content from suitable CVI values for items (CVI range = 0.78–1.0) and scale-total (CVI = 0.86); criterion from SMET associations with levels for light (r = – 0.42) and noise (r = 0.21), plus RULA (r = 0.42) and NASA-TLX (r = 0.39); and construct through participants with WMSD having significantly higher SMET total-scores (p = 0.01). Internal consistency (α= 0.89) and reliability (ICC2.1 = 0.87) were acceptable and strong. CONCLUSION: This study indicated that the SMET Persian version had acceptable psychometric properties in an industrial occupational setting. Further investigation in longitudinal populations is recommended.
The impact of COVID-19 on neck pain intensity and onset: A systematic review
Authors: Mansour Zaid M. , Al Nassan Saad , Hawamdeh Mohannad , Al Bustanji Shaden , Alshammari Faris
Published: September 2023

BACKGROUND: The COVID-19 pandemic has had significant impacts on most aspects of life, including physical and psychological wellbeing. Neck pain is a very common musculoskeletal complaint worldwide, and one that has been impacted by COVID-19. Such impacts have been studied by a few researchers, but not without inconstancies. Moreover, understanding those impacts in relation to rehabilitation is not fully comprehended. OBJECTIVE: The aim of this study was to systematically examine the impacts of COVID-19 on neck pain intensity and onset pre and post the pandemic. METHODS: This study was developed following the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines. A systematic literature search was conducted on PubMed-MEDLINE, EMBASE, and Cochrane Library. Keywords used were “COVID-19” and “Neck Pain”. Risk of bias was assessed using the Joanna Briggs Institute Checklist for prevalence studies. RESULTS: A total of five studies were included with an overall sample size of 2618 participants. Three studies were at moderate risk and two were at high risk of bias. Results from three studies reported an increase in neck pain intensity and onset, while the other two did not report an increase. CONCLUSION: The impact of COVID-19 on neck pain is unclear. The inconsistency in results sheds the light on the importance of having future research (including longitudinal studies) to help guide us towards understanding the real impacts of COVID-19 on neck pain.
A bibliometric analysis of telework research based on Web of Science via VOSviewer
Authors: Yang Zhirong , Huang Yong
Published: September 2023

BACKGROUND: The COVID-19 pandemic has sparked increased interest in telework as a means of reducing the spread of the virus and maintaining social distance. OBJECTIVE: This study aims to generate a bibliometric analysis of research progress and trends in telework over the past 20 years. METHOD: A search of key terms was conducted in the Social Science Citation Index, Science Citation Index Expanded, and Arts and Humanities Citation Index categories for documents published on telework from 2000–2023. A total of 3,446 studies were analyzed using VOSviewer for co-citation, co-word, and cluster analysis. RESULTS: Bibliometric analysis revealed that telework research has experienced a significant increase during the COVID-19 pandemic, with the number of publications in 2022 being more than 15 times higher than that in 2019. The analysis revealed that the most commonly researched areas related to telework were applied psychology, management and business. The knowledge base focuses on the antecedents, moderators, mediators, and consequences of telework, and the research primarily centers around seven directions of well-being, mental health, and work-family conflict. A conceptual framework for telework research and suggestions for future investigation are proposed based on the results of the bibliometric analysis. CONCLUSION: This study provides an overview of telework research over the past two decades, highlighting the current status and hot topics in the field. It calls for wider and more active participation of researchers globally to advance the understanding of telework.
Costs of Full Endoscopic Spine Surgery: a Narrative Review
Authors: Mandelli Filippo , Urbanschitz Lukas
Published: September 2023

PURPOSE

The purpose of this narrative review was to summarize the current literature reporting costs of full endoscopic spine surgery (FESS).

METHODS

Studies assessing costs in FESS written in English were included. PubMed and Embase databases were screened by the authors. Data regarding costs were extracted and reported in the current review.

RESULTS

Nine studies were included. Seven studies were retrospective comparative and 2 were randomized-controlled-trials. The studies included treatment of lumbar disc herniation (LDH), lumbar spinal stenosis (LSS) and cervical disc herniation (CDH). Eight studies reported a comparison of FESS to open microscopic surgery. Four of them reported lower total costs in FESS. The methodologies used for cost analysis exhibited heterogeneity in terms of both the data source and accounting methodology. Length of hospital stay (LOS) and type of anesthesia consistently affected total costs.

CONCLUSION

Included studies report inconsistent results regarding total costs of FESS compared to open microscopic surgery. LOS and type of anesthesia seems to be the two main costs drivers. As endoscopic surgery continues to gain popularity, further research is needed to evaluate the long-term cost-effectiveness and impact on patient outcomes, however a standardization of methodology of costs-analysis is warranted.
Facing the Facts About Test Score Gaps
Authors: Connor Gregory
Published: September 2023

I first review seven separate lines of evidence which indicate that the differences in average intelligence test scores between racial groups are partly attributable to genetic variation across biogeographic ancestries such as African, East Asian, and European ancestries. I focus on the U.S. Black-white test score gap for which the evidence is most comprehensive. The widely promulgated public dogma that the causes of the Black-white test score gap are entirely environmental is not empirically plausible given these seven lines of evidence. Other race-related test score gaps may also have a genetic component. I then confront the sensitive public policy question of whether these findings should be openly acknowledged or suppressed.
An Overview of Modern Cartographic Trends Aligned with the ICA’s Perspective
Authors: Habib Maan , Okayli Maan
Published: September 2023

This study provides a comprehensive overview of modern cartography innovations and emerging trends, highlighting the importance of geospatial representation in various fields. It discusses recent advancements in geospatial data collection techniques, including satellite and aerial imagery, Light Detection and Ranging (LiDAR) technology, and crowdsourcing. The research also investigates the integration of big data, machine learning, and real-time processing in Geographic Information Systems (GIS), as well as advances in geospatial visualization. In addition, it examines the role of cartography in addressing global challenges such as climate change, disaster management, and urban planning in line with the International Cartographic Association’s (ICA) perspectives. The study discusses the ethical considerations and challenges associated with modern cartography, including privacy, data security, and accessibility issues. Finally, it outlines future directions and opportunities in cartography, focusing on the potential applications of artificial intelligence, interdisciplinary collaborations, and open-source platforms. This discussion aims to emphasize the significance of continued research and development in cartography and encourage interdisciplinary collaboration for a better understanding of the world.
Algumas Considerações em Tôrno da Dose de Radium no Tratamento do Câncer do Colo Uterino
Authors: Machado Osolando Judice
Published: September 2023

Trabalho apresentado ao 11° Congresso Nacional del Câncer — realizado em Santiago do Chile, de 28 de novembro a 1° de dezembro de 1951. Propõe-se apresentar parte do estudo em tôrno da dose de radium no tratamento do carcinoma do colo uterino, segundo a técnica empregada no Serviço Nacional de Câncer.
An Analysis of Students’ Speaking Skill through British Parliamentary Debate System
Authors: Tami Ayu Ridha , Wariyati Wariyati , Hasibuan Ahmad Laut
Published: September 2023

The purpose of this research was to investigate the students’ speaking skill through British Parliamentary (BP) debate System. This observation was taken 18 Days which started from Thursday, 13th February to 12 March 2020. The Qualitative Research Method was used in this research. The subjects of this research chosen randomly were 8 student as the representative of students in the fourth semester of English education UMN Al Washliyah Medan Class A, academic year 2019-2020. The population from this research were the whole students in the 4th semester English Education Department Class A.Technique of collecting data used was the observation in which the students were observed during debate class by using observation sheet designed with theory of Finocchiaro in Armasita (2017) to know the ability that have been achieved by the students and all the data found from 8 subjects of research that have been analyzed by the researcher there were 4 indicators/elements, namely pronunciation, vocabulary, fluency and comprehension. After the research conducted, it was found that there were 3 students with the higher speaking skill, 4 students with the moderate speaking skill, and only one student categories as the unsatisfied speaking skill. Shortly, this finding of the research was appropriate with the assumption in this research that is debate is effective to increase the students’ speaking skill.
English Teachers’ Strategies in Teaching Listening Comprehension for Senior High School in MAN Serdang Bedagai
Authors: Herlina Herlina , Arfanti Yulia , Risnawaty Risnawaty
Published: September 2023

The article deals with the teachers’ strategies in teaching listening comprehension for Senior High School in MAN Serdang Bedagai. The aims at knowing the teachers’ strategies in teaching listening comprehension , the problems are found by the teachers and how they overcome the problems. The research was conducted by using qualitative method. Techniques used to collect the data are observation, taking note and interview . The researcher selected two participants which is the English teacher’s in grade 12th at MAN Serdang Bedagai . The results of the study are The participant one use note-taking strategies and summarizing strategies and the participant two, use the pay attention strategies when deliver the listening theory and when do the listening practice. Based on the research finding, the conclusion is that there are several strategies which used by the English teachers in teaching listening, the strategies are taking note, summarizing and paying attention.
The Teaching Strategy in Reading Comprehension in Grade 2 Students of MtsN Serdang Bedagai
Authors: Panjaitan Khoiriyah , Hariyanto Hariyanto , Hasibuan Ahmad Laut
Published: September 2023

This research was aimed to figure out the strategies used by English teachers in teaching reading and how they applied the strategies. It was designed as descriptive qualitative research. Participants of the research were two English teachers who taugh the 2 grade the students. Each English teacher had eight meetings observed by the researcher. The  research instruments aere strategies checklist and interview. They were used to figure out the strategies used and how the English teachers applied the strategies in teaching reading comprehension. The result of the data were analyzed and broken down into three stages or Data Reduction, Data Display, and Drawing Conclusion or Interpretation. The previous studies showed that the teachers’ strategies were very effective in teaching reading comprehension. On the other hand, the use of too many strategies would affect students’ performances in learning reading comprehension. This reason was contradicted with the conducted the researcher in Junior High School Number 9 Bengkulu. This research showed that the teachers in applying strategies only use two or three strategies. Combination of some strategies was more appropriate comparemany strategies used by the teachers. The students would be more focused if the teacher used fewer strategies but well applied in teaching reading comprehension.
The Effect of Using Scrabble Games towards Students’ Achievement in Vocabulary
Authors: Purnama Dwi , Putri Rini Fadhillah
Published: September 2023

The objective of this research was to find out the significant effect of using scrabble games towards students’ achievement in vocabulary at the eighth grade of SMP Negeri 2 Deli Tua. The type of research was quantitative research, and it was conducted by using experimental design with two classes, in experimental class and control class consisted of 26 students. In technique of collecting data, the researcher conducted pre-test, treatment and post-test by vocabulary test. The data were analyzed by using mean, standard deviation and t-test formula. The result of the data showed that t-observe (12.19) value was higher than the t-table in which t-observe > t-table (12.19 >1.68). The finding showed that the hypothesis was accepted. It can be concluded that there was significant difference score in vocabulary achievement for the students who were taught by using scrabble games and who were not taught by using scrabble games. Based on the explanation above, the researcher concluded that scrabble games is effective for teaching vocabulary of the eighth grade students at SMP Negeri 2 Deli Tua Academic Year 2021/2022
Tertiary Students’ Perceptions on Spotify Application In Improving English Pronunciation
Authors: Lubis Nazriani , Anjani Putri
Published: September 2023

Listening music through music streaming has become part of tertiary students’ activities. Music streaming is one of the media that can improve students' English pronunciation. The purpose of this research was to investigate three students’ perceptions from different Universities in Indonesia on the use Spotify application in improving English pronunciation. A qualitative research method with thematic analysis was applied in this research and the subjects of this research were three students; one English student and two non-English students, based on the parameter of the feature of Spotify, namely; the students’ interest and the students’ motivation (Andriani et all, 2018; Rahmania & Mandasari, 2021). Three themes were found on the interview, namely; Accessible and Flexible Feature, Interesting Media for Learning and Practicing English Pronunciation. The results of this research revealed that the use of Spotify feature on the English pronunciation of all participants increased the students’ pronunciation, particularly in terms of word and meaning. Two non-English students did not pay attention to the elements of English pronunciation; vowel, stress, rhythm, pitch and intonation. However, only English students pay more attention and more comprehensive elements of English pronunciation. It proves that educational background had an effect on improving students’ pronunciation
ОСОБЛИВОСТІ БУДОВИ ДЕЯКИХ ОРГАНІВ СЕРЕДНЬОЇ КИШКИ СВИНЕЙ
Authors: Лариса Василівна Плюта
Published: September 2023

В статті було розглянуто морфологічна та анатомічна будова органів середньої кишки свиней. У дослідженні були використані загальновідомі комплексні класичні морфологічні та анатомічні методи експериментальних досліджень. Визначені видові анатомічні особливості будови слизової оболонки похідних органів середньої кишки у свиней білої української породи. Органи середньої кишки у свиней розташовуються в черевній порожнині, яка кістково обмежена дорсально останніми грудними та поперековими хребцями. З боків черевна порожнина обмежена останніми парами несправжніх ребер та м’язами черева. Топографічно органи середньої кишки свиней розташовані в краніальній, середній та частково каудальній ділянці черевної порожнини тварини. Органи середньої кишки побудовані по типу трубчастих та паренхіматозних. Тонкий кишечник складається з трьох оболонок. Слизова оболонка має ворсинки, у свиней ворсинки неоднакової форми й розміру і в основі з’єднані в складки і збільшують поверхню всмоктування до 20 разів, ворсинки короткі і досягають в довжину до 0,35 мм. До застінних залоз середньої кишки свиней відносять печінку та підшлункову залозу. Печінка це великий паренхіматозний орган свиней в якому постійно утворюється жовч, окрім цього виконує багато інших важливих функцій. Печінка у свиней є депо крові, органом терморегуляції, знезаражує отруйні речовини, які заносяться до неї ворітною веною з кишок, депо глікогену, приймає участь в обміні білків. Маса печінки свиней до 2500 г. Побудована вона за типом паренхіматозного органу, тобто має строму та паренхіму. Печінка має свою специфічну будову у свиней, чітко видно малюнок паренхіми під капсулою, притаманний безпосередньо печінці свині, що відіграє суттєву роль при візуальному огляді органу, при визначенні видової приналежності. Це компактний орган розміщений в черевній порожнині правому підребер’ї в межах 14 ребра, частково заходить в ліве підребер’я в межах 10 ребра і доторкується до черевної стінки в ділянці мечеподібного відростка. Залоза має дещо сплющену форму, випуклою поверхнею прилягає до діафрагми, відображаючи її купол, протилежна поверхня більш плоскіша направлена каудально до нутрощів. Результатами проведених досліджень встановлено, що зазначені ограни похідних середньої кишки травної системи свиней, а саме печінки, будова її паренхіми та строми, має суттєві анатомічні та морфологічні відмінності, що слід враховувати при препаруванні та виготовленні вологих анатомічних препаратів та для забезпечення населення доброякісним у ветеринарно-санітарному відношенні м’ясом. Специфічність будови печінки свині має високу актуальність для вивчення анатомії, для хірургічних втручань, необхідно знати анатомічну варіабельність печінкових артерій та вен, жовчних протоків. для визначення різних методів лікування захворювань органів похідних середньої кишки свиней. Знання всіх цих анатомічних елементів у свиней є необхідним і корисним для навчання лікарів ветеринарної медицини, а в подальшому і різних наукових напрямків досліджень науковців в цій галузі.
ЕФЕКТИВНІСТЬ ЛІКУВАННЯ ТРИХОФІТІЇ КРОЛІВ ШАМПУНЕМ БІОШАУМ
Authors: Юлія Олександрівна Супрун
Published: September 2023

Збудники Microsporum canis і Trichophyton mentagrophytes є антропозоонозними дерматофітами, які можуть спричинювати шкірні інфекції у тварин і людей. Розробка нових безпечних засобів лікування та профілактики дерматофітів є важливим завданням для науковців. Дослідження проводилось на приватній кролівницькій фермі в селі Кінські Роздори, Пологівського р-ну Запорізькій області в період з березня 2021 року по квітень 2021 року. Матеріалом для дослідження був зіскоб з ураженої ділянки шкіри з подальшим виготовленням препарату з KOH та сироватка крові кролей. Забір крові проводився вранці до годівлі кролей з вени, напочатку та вкінці досліду. Люмінесцентний огляд тварин за допомогою лампи Вуда проводився перед кожним миттям шампунем Біошаум. У цій статті представлено результати дослідження ефективності лікування трихофітії кролів за допомогою шампуню Біошаум на приватній кролівницькій фермі. Всього було випробувано 33 кролів, з них п’ять мали ознаки трихофітії, а інші 28 не мали жодних видимих симптомів. Виявлених п’ять кролів з ознаками трихофітії лікували шампунем Біошаум в концентрації 2 % раз на три дні до зникнення симптомів (один-два тижні), що привело до повного одужання. Інші 28 кролей, які не мали ознак трихофітії, були оброблені в тієї ж концентрації розчином шампуню Біошаум раз на три дні тричі, під час чого симптомів трихофітії не було виявлено. Перед кожним миттям кролів обробляли клітки, де вони утримуються, 1% розчином Біошаум з витратою 0,1-0,2 л/м² для машинної або ручної мийки. Результати дослідження свідчать про високу ефективність шампуню Біошаум у лікуванні трихофітії кролів та про його безпечність що було доведено на основі клінічного аналізу крові, токсичної дії шампуню Біошаум не було виявлено. Шампунь може бути використаний для лікування кролів з ознаками трихофітії або для профілактики зараження тварин. Дослідження проводилося на приватній кролівницькій фермі, що може обмежувати загальність дослідження, але все ж воно може бути корисним для власників кролівницьких ферм та ветеринарів, які займаються лікуванням трихофітії у кролів. Перспективою подальших досліджень є визначення можливості використання шампуню BioShaum для лікування та профілактики заражень в інших тваринницьких господарствах.
Polythermal Nucleation Kinetics of NaHCO3-Na2CO3-H2O in the Presence of Polyectrolyte Additives
Authors: Etroubeka Caroline Ruth , Asiedu Daniel , Tegladza Isaac D.
Published: September 2023

The particle size distribution (PSD) of substances is important to their transportation and packaging. The crystal nucleation kinetics measured from the metastable zone width (MSZW) and/or the induction time are vital to the control of the PSD. In this work, the existence of three polyelectrolyte additives (sodium polystyrene sulfonate (SPS), Polyacetic acid (PAA) and sodium carboxymethylcellulose (CMC)) showed varying effects on the MSZW and induction times of NaHCO3-Na2CO3-H2O system. SPS lowers the MSZW and induction time while both parameters were increased in the presence of CMC and PAA. The nucleation inhibition effects were observed to be prominent for both PAA and CMC resulting in observed finer PSDs as cooling rate, b increases from 0.5 K/min to 2.65 K/min. The PSD increases with b for both pure and SPS additive, whereas they decrease for both PAA and CMC.
Development of Imitation Model of an Electromechanical Energy Converter with a Solid Rotor in ANSYS RMxprt, Maxwell and Twin Builder
Authors: Pliuhin Vladyslav , Zablodskiy Mykola , Tsegelnyk Yevgen , Slovikovskyi Oleksii
Published: September 2023

This paper presents the development of a platform for coupling modeling (cosimulation) of an electromechanical energy converter using Ansys Maxwell and Ansys Twin Builder. The researched electromechanical energy converter is based on the operation principle of an induction motor with an external hollow solid rotor. The paper reveals the specifics of modeling this type of special electric machine. In the work, step-by-step modeling of the machine in Ansys RMxprt, export of the model in Ansys Maxwell 2D and 3D with further co-simulation in Twin Builder was performed. It shows how to set up the project to import an object calculated by the finite element method from Ansys Maxwell into the Twin Builder sheet. Coupling simulation of an electromechanical energy converter with a stable three-phase power source was performed. The simulation model considers the presence of a step mechanical load during the run-up to the rated speed. Such structure of a coupling project gives better simulation results compared to the use of simulation models with concentrated parameters, based on the implementation of differential equations of electromagnetic transients using functional blocks. The obtained characteristics showed a high coincidence of the expected results according to the indicators of phase currents of the stator winding, moving torque and rotation speed. This paper will be useful for coupling modeling special-purpose electrical machines that are not available in the Ansys Twin Builder library as ready-made blocks.
Simulation of a Hybrid Solar Power Plant with a Hydrogen Generator in MATLAB/Simulink Environment
Authors: Teterev Vitalii , Khudiakov Illia
Published: September 2023

Ensuring reliable electricity supply to consumers in isolated and distributed energy systems can be achieved through grid connection, the use of energy storage systems for generation, or creating conditions for consumption control, including the installation of energy storage for consumers. This article explores various methods to enhance the reliability of electricity supply to consumers from power plants based on renewable energy sources (RES). The paper
presents a mathematical model and optimization algorithm for the operation of a hybrid energy complex, implemented in the MATLAB/Simulink environment. The model takes into
account the influence of various factors on its operational modes and has been tested through a series of calculations, confirming its efficiency and adequacy. The proposed methods and results can be applied in designing energy supply systems for remote and inaccessible re-
gions, as well as in distributed energy system nodes. The paper also discusses the use of a hydrogen generator as an alternative energy source and provides insights into the properties of hydrogen, methods of production, prospects, and challenges of hydrogen energy. It offers an overview of the most common methods of hydrogen and other substance extraction, with a primary focus on water electrolysis. The simulation model also considers the performance of the hydrogen generator, a vital component of the hybrid energy supply system. The hydrogen
generator produces hydrogen from water through electrolysis, which can be optimized based on input energy and water supply. The energy storage system, including battery banks, is also modeled to monitor energy storage and delivery processes during periods of high and low
demand. The conclusions of this article encompass a mathematical model and optimization algorithm for the operational modes of a hybrid power plant based on renewable energy sources with a hydrogen generator and an energy storage system. The proposed methods and
results can be valuable in designing energy supply systems for consumers in remote and distributed energy systems.
High-Efficient Implementation of Electric Heaters in Alkyne Resin Production Process
Authors: Gurina Galina , Druzhinin Evgen , Arsenyeva Olga
Published: September 2023

The high cost of energy resources requires implementation of high-efficient techniques for energy production. In order to successfully solve the problem of intensification, resource and energy saving in the production processes of alkyd resins, the implementation of electric heaters in technological flowsheet was proposed. A high-temperature ceramic with high heat resistance was proposed and its thermal conductivity coefficient was estimated for the working conditions. The contact-type ceramic heaters, which ensure the direction of heat flows by using different materials in the body of the heater were designed and installed at Krasny Khimik ceramic plant in Kharkov, Ukraine. The approach to reduce the time of heating of the reactor from the ambient temperature to the synthesis temperature at the first stage of alcoholysis up to 240-260 °C, was proposed by implementation of fire-resistant ceramic elements. The ways of optimizing recipes of resin composition, enabling to reduce the time of the processes of alcoholysis and polycondensation during the synthesis of resins, are discussed.
Development of Electric Drive Control System in SoMachine (Schneider Electric)
Authors: Sukhonos Maria , Pliuhin Vladyslav , Tsegelnyk Yevgen , Slovikovskyi Oleksii , Varvianska Viktoriia
Published: September 2023

This paper is devoted to the disclosure of opportunities for the development of an electric drive control system based on frequency converters manufactured by Schneider Electric. The paper contains the results of practical experience in the manufacture of hardware, parameterization and programming of the control system. As a control object, a bridge crane with main hoist, auxiliary hoist and carriage movement mechanisms is considered. This crane was developed and assembled by the authors and is used for teaching students, conducting research by graduate students and scientists. Despite the availability of materials on this topic, the paper aims to provide a complete description of the system from sensors and controller to visualization and connectivity. Provides debugging information for the ATV930, ATV 320, Magelis HMISTU855 touch panel, and M241 controller. The development of the dispatching control system for the crane mechanisms was carried out using SoMachine (control part) and Vijeo Designer (visualization part) software. Recording of experimental data and parameterization of frequency converters is performed in SoMove software. This paper will be useful both for academic purposes in teaching students, researchers, as well as for motorers of industrial enterprises.
Electric Drive SCADA Development with Vijeo Designer (Schneider Electric)
Authors: Aksonov Oleksandr , Pliuhin Vladyslav , Tsegelnyk Yevgen , Slovikovskyi Oleksii , Duniev Oleksii , Yehorov Andrii
Published: September 2023

The paper is devoted to the disclosure the construction of the SCADA system for managing the operating modes and monitoring the electric drive of the overhead crane. The material is provided in the form of step-by-step instructions for building such a system in the Vijeo Designer program. The creation of a new project, interface elements, binding variables with interface elements, setting the behavior of dynamic interface elements are shown in detail. The issue of communication of global variable visual elements of the interface with the M241 controller and the program in SoMachine has been revealed. The developed interface allows to control three mechanisms of the bridge crane: main hoist, auxiliary hoist and carriage movement. It is shown how to control frequency converters that are connected to the controller through different types of communication: direct analog to the controller, and through the Ethernet/IP protocol. The work will be useful for academic purposes in teaching students as well as for researchers and industrial engineers.
In Vitro Anticoagulant Activity of Crude Protease of Bacillus tequilensis HSFI-5
Authors: Ethica Stalis Norma , Raharjo Tri Joko , Zilda Dewi Seswita , Hidayati Nur
Published: September 2023

obtained from the fermented intestine of Holothuria scabra (sand sea cucumber). Strain HSFI-5 had been reported to be able to produce proteases, which had shown several characteristics of an antithrombotic agent, i.e., fibrinolytic and clot-lysis activities. However, its anticoagulation activity test is yest to be done. This study aimed to determine the anticoagulant activity of the crude protease HSFI-5 in vitro. The study design was a completely randomized design with a sample size of 90 calculated using the Federer formula. The material used was crude protease from B. tequilensis in skim milk broth. Prothrombin time (PT), activated partial thromboplastin time (aPTT), and plasma recalcification time (PRT) were carried out to test the anticoagulant activity. Citrated platelet poor plasma samples were divided into positive control, normal control, direct examination with crude enzyme in volumes of 50 and 100 µL and pre-incubation at 37ºC for 5, 10, and 15 min with crude enzyme volumes of 50 and 100 µL. The data normality was tested with the Kolmogorov-Smirnov test and the different tests were analyzed by one-way ANOVA with the Post hoc LSD test. The results of one-way ANOVA both on PT, aPTT, and PRT examinations showed that there was a significant difference between the treatment groups (p<0.05). The longest results of PT, aPTT, and PRT are positive controls, and the shortest results are normal controls for PT, and 15’ 50 group for aPTT and PRT. It is clear that crude protease B. tequilensis HSFI-5 exhibits anticoagulant as well as thrombolytic action, raising the possibility that it could function as an antithrombotic drug.
Estimasi Daya dukung Perairan Pesisir Kecamatan Pademawu Kabupaten Pamekasan untuk Kegiatan Budidaya Udang Vannamei Berdasarkan Laju Biodegradasi Limbah
Authors: Ismail Moh , Arisandi Apri , Farid Ahmad
Published: September 2023

Kegiatan usaha budidaya udang vannamei di Kecamatan Pademawu Kabupaten Pamekasan mengalami peningkatan yang baik hal  ini di dukung oleh teknologi  budidaya dari tradisional  ke intensif selain itu potensi sumber daya alam yang mendukung pengembangan usaha budidaya udang vannamei kedepan memberikan peluang baik bagi pengusaha dan pemilik lahan untuk membuka usaha budidaya udang vannamei baru. Pengembangan usaha budidaya udang vannamei di Kecamatan Pademawu berpotensi mencemari lingkungan perairan, karena Kegiatan usaha budidaya udang vannamei menghasilkan limbah dan limbah dibuang keperairan. Penelitian ini bertujuan untuk mengetahui daya dukung perairan untuk kegiatan usaha budidaya udang vannamei. Penelitian dilakukan pada tanggal 16 April 2021 diperairan Kecamatan Pademawu. Hasil penelitian menunjukkan bahwa volume air yang tersedia selama 1 hari di perairan pesiri pademawu 33.591.227 m3. Jumlah limbah maksimal yang dapat ditampung dalam bentuk TSS (Total Suspendet Solit) adalah  282 ton/hari. kegiatan budidaya udang sistem intensif luasan tambak maksimal 30.56 hektar dengan produksi 575.21 ton/musim tanam. Kegiatan budidaya udang sistem semi intensif luasan tambak maksimal 244.16 hektar dan produksi 624.31 ton/musim tanam. Kegiatan budidaya udang sistem tradisional luasan tambak maksimal 577.87 hektar dan produksi 450.16 ton/musim tanam.
EFEKTIVITAS HIPOFISA AYAM BROILER TERHADAP RESPON OVULASI IKAN BETOK (Anabas testudeineus, Bloch)
Authors: Wijaya Andre , Sugihartono Muhammad , Ghofur Muarofah
Published: September 2023

Betok fish (Anabas testudineus, Bloch) is a local freshwater fish that has high economic value and is loved by the community, but has not been widely cultivated, because the betok fish have not been bred so that fish production still relies on catches from nature. The potential for betok fish to become consumption fish and ornamental fish is accompanied by increasing market demand for Violita et al (2019). This study aims to determine the effect of the effectiveness of the broiler's pituitary gland on the ovulatory response of betok fish (A. testudeineus, Bloch) by using a hormone extract from the broiler's pituitary gland. This study used a completely randomized design (CRD) with 4 treatments and 3 replications. Where each treatment was given an injection dose: Treatment A: Hypophysis Broiler Chicken 0.2 ml/kg. Treatment B : Hypophysis of Broiler Chicken 0.4 ml/kg. C : Hypophysis Broiler Chicken 0.6 ml/kg. Treatment D : Control. Parameters Observed Ovulation Latency Time, fecundity. Research shows that the average latency time is 8.07 hours. 6518 items.
Fekunditas Ikan Betok (A. testudineus. Bloch) Yang diinduksi dengan hCG dan Hipofisa Ayam Broiler
Authors: Apriadyanti Melsy , Sugihartono Muhammad , Ghofur Muarofah
Published: September 2023

This study aims to determine the effect of ovulation response on betok fish (A. testudeineus, Bloch) using the combination of the hormone hCG and hypophysis of broiler chickens, this study used a completely randomized design (CRD) with 5 treatments and 3 replications. Where each treatment is given an injection dose: Treatment A: hCG hormone 0.3 ml/kg (100%). Treatment B: 0.225 ml/kg (75%) hCG hormone + 125 ml/kg (25%). Treatment C : 0.15 ml/kg (50%) hCG hormone + 250 ml/kg (50%) broiler hypophysis. Treatment D : Hormone hCG 0.075 ml/kg (25%) + Hypophysis broiler chicken 375 ml/kg (75%). Treatment E: Hypophysis broiler chicken 500 ml/kg (100%). The results showed that the fekundity was 30.552 eggs.
Kinerja Produksi Ikan Sidat (Anguilla Bicolor Bicolor) dengan Volume Air Pemeliharaan yang Berbeda pada Sistem Resirkulasi
Authors: Harianto Eko , Supriyono Eddy , Budiardi Tatag , Affandi Ridwan , Hadiroseyani Yani
Published: September 2023

Eel (Anguilla bicolor bicolor) rearing activities that develop in Indonesia generally still use a large volume of water. The application of a recirculation system reduces water requirements and at a small volume of water, the load on the container to accommodate water becomes lighter so that several containers can be arranged vertically. This study aims to determine the best water volume in eel rearing with a recirculation system on production performance. This study used a completely randomized design with four treatments and three replications. The treatments, namely the difference in the volume of water (VA) used in the maintenance container, included VA 2.5 L (A), VA 3.5 L (B), VA 4.8 L (C) and VA 5.8 L (D). Eels were reared for 60 days in an aquaverticulture system with a stocking density of 10 fish per container. The test parameters in this study included survival rate (SR), specific growth rate (LPS), absolute weight growth (PBM) and feed conversion (FCR) and coefficient of final weight diversity (KKb). Other parameters analyzed include water and land use analysis. The results showed that aquaverticulture with multilevel containers on eel produced the best water volume of 5.8 L with high production performance (100% survival, specific growth rate 1.60%/day). The volume of water needed to produce 1 kg of eel for 1 year is 27.69 liters and the productivity of aquaculture land is 86.14 kg/m2. During the COVID-19 pandemic, this system design has been applied on a laboratory scale, but has not been applied commercially in the community.
Efektivitas Pemberian Tepung Cacing Sutra (Tubifex Sp) dalam Pakan Terhadap Performa dan Kelangsungan Hidup Benih Ikan Komet (Carassius auratus)
Authors: Saputro Wahyu , Syahrizal Syahrizal , Ghofur Muarofah
Published: September 2023

Comet goldfish (Carassius auratus) is a type of freshwater ornamental fish that is popular among the public and has the main advantage of having lots of color variations. The use of fish meal is the biggest obstacle causing the high price of feed and affecting the production of comet fish. The new alternative material to replace fish meal is silk worm flour (Tubifex sp). The aim of this study was to determine the effectiveness of feeding silkworm meal on the performance and survival of comet fish (C. auratus) fry. This research was carried out in February-March 2021 at Perum Yeyes Lestari, Kenali Besar Village, Alam Barajo District, Jambi City for 40 days. The experimental design used in this study was a completely randomized design with 4 treatments and 3 replications, the treatments included 15% silk worm flour (A), 20% silk worm flour (B), 25% silk worm flour (C) 30% silk worm flour (D). The test fish used were comet fish measuring 3-5 cm as many as 120 fish. The results showed that temperature had an effect on survival, absolute weight growth and feed conversion. The color of comet fish for all treatments at the beginning of the study ranged from 3.90-4.43 (golden yellow), while at the end of the study there was a color change that ranged from -2.14-2.83 (dark red). The highest SR was found in treatment A of 86.67% followed by treatment B 70.00% and treatment D 56.67%. The highest PBM value was found in treatment C of 3.26 g. The best FCR value was found in treatment C of 3.56. The results of the analysis of water quality showed that the condition of the culture media was still quite feasible for the maintenance of comet fish in the aquarium container.
Respons Ekstrak Hipofisa Kambing Terhadap Fekunditas Ikan Betok (Anabas testudineus)
Authors: Ghofur Muarofah , Sugihartono Muhammad , Azmi Ulil , Anggraini Lara
Published: September 2023

The production of betok fish has experienced overfishing and resulted in a decrease in productivity, therefore one of the efforts made to help success in spawning betok fish can be done by stimulating factors related to the reproductive system, namely by stimulating the work of hormones in stimulating gonadal maturation in artificial spawning with hypophysation method. This study aims to look at the response of goat pituitary extract to the fecundity of betok fish (A. testudineus, Bloch). This research was conducted for 30 days, using 4 treatments with 3 replications, with details of treatment P0: Control, treatment P1: Goat Pituitary Extract 0.05 ml/kg, Treatment P2: Goat Pituitary Extract 0.2 ml/kg, and treatment P3 : Goat Pituitary Extract 0.35 ml/kg. The results of the study using the best goat pituitary extract in the P2 treatment (0.2 ml/kg Goat Pituitary Extract) produced the highest fecundity, namely 8349 eggs produced. The results of water quality measurements showed that the pH value was 7.6 – 7.7. water temperature is 270C – 300C, dissolved oxygen (DO) is 2.9 – 4.4 mg/L. and the content of ammonia (NH3) during the study was 0.012 – 0.013 mg/L.
Pengaruh Pemberian Jenis Pakan Yang Berbeda Terhadap Kelangsungan Hidup Dan Pertumbuhan Larva Ikan Gabus (Channa striata)
Authors: Yulintine Yulintine , Maryani Maryani , Siburian Herma S
Published: September 2023

The purpose of this study was to determine the effect of different feeding on the survival rate and growth of snakehead fish (Channa striata) larvae. This research was conducted using a completely randomized design (CRD) with 3 treatments and 3 replications. The treatment consisted of treatment A treatment with artificial feeding PF 0, treatment B with feeding Daphnia and treatment C with feeding silk worms. The results showed that the provision of different types of feed had a significant effect on survival, absolute weight growth, daily weight growth rate, absolute length growth rate, daily length growth rate and feed conversion of snakehead fish larvae (Channa striata). The best feeding for the survival and growth of snakehead fish larvae is found in feeding using natural feed silk worms and Daphnia sp.