bluuebunny/crossref_metadata_2025 huggingface dataset:
Нутриентный профиль плодов кизила (Сornus mas L.)
Authors: Акимов  Михаил Юрьевич Акимов  Михаил Юрьевич , Жидехина  Татьяна Владимировна Жидехина  Татьяна Владимировна , Жбанова Екатерина Викторовна , Кольцов Владимир Александрович , Миронов Алексей Михайлович Миронов Алексей Михайлович
Published: January 2024

Аннотация.  В работе отражены исследования макро- и микронутриентного состава плодов перспективных сортов кизила генетической коллекции нетрадиционных садовых культур ФГБНУ «ФНЦ им. И.В. Мичурина». Изучение химического состава плодов проводилось на приборно-аналитической базе лаборатории биохимии и пищевых технологий и лаборатории передовых послеуборочных технологий в соответствии со стандартными методиками. Изучение состава фенольных компонентов осуществлялось с помощью метода ОФ ВЭЖХ. Высокие вкусовые качества и умеренная кислотность плодов отмечены у сорта Бродовский желтый. Наибольшим содержанием аскорбиновой кислоты характеризуются эл. с. 29-00 (64,5 мг/100 г), сорт Новый крупный (59,7 мг/100 г). Высоким суммарным содержанием антоцианов характеризуются эл. с. 29-00 (100,5 мг/100 г), сорта Былда (94,5 мг/100 г), Стрыйский (98,6 мг/100 г). Катионов калия накапливалось в пределах 119,46-263,83 мг/100 г, натрия – 0,73-3,15 мг/100 г, магния – 11,03-15,53 мг/100 г, кальция – 30,33-46,69 мг/100 г. Плоды сортов кизила Аббат и Николка 2  характеризуются преобладанием в антоциановом комплексе Cy3Gala, a плоды сортов Находка и Волгоградский грушевидный – Pg3Gala. Показано, что структурный состав флавонолов не изменяется в зависимости от генетических различий и условий возделывания сортов. Основными флавонолами являются: кверцетин‑3-глюкуронид, кемпферол‑3‑галактозид и кверцитин-3-рутинозид. Углубленное изучение питательной и биологической ценности плодов кизила позволяет рекомендовать их для свежего потребления и технологической переработки.
ЭКСПЕРИМЕНТАЛЬНАЯ ОЦЕНКА ВЛИЯНИЯ ОБРАБОТКИ ВЫСОКИМ ГИДРОСТАТИЧЕСКИМ ДАВЛЕНИЕМ НА МИКРОБИОЛОГИЧЕСКИЕ ПОКАЗАТЕЛИ ПОЛУФАБРИКАТА ИЗ ПРЯНЫХ ТРАВ
Authors: Охременко Светлана Игоревна , Соколов Сергей Анатольевич , Яшонков Алесандр Анатольевич
Published: January 2024

Традиционные технологии обработки пряной зелени (сушка, стерилизация и консервирование солью), целью которых является увеличение сроков хранения продукта за счет уничтожения патогенной микрофлоры и микробных токсинов, имеют наряду с преимуществами и ряд недостатков. При любом абиотическом способе консервирования пряной зелени изменения претерпевают, прежде всего, витамины и биологически активные вещества и, как следствие, снижение пищевой ценности продукта в целом. Предложена инновационная технология производства полуфабриката из пряных трав с использованием обработки высоким гидростатическим давлением в диапазоне от 200 до 500 МПа при температурах от 10 до 40°С при экспозиции давления 4, 8 и 12∙601c. Получаемый таким образом продукт представляет собой пасту из смеси петрушки и укропа, не содержащую консервантов и с высокими значениями сроков хранения Разработанная технология позволяет минимизировать потери витаминов и ценных питательных веществ и снизить объемы естественной убыли сырья в процессе хранения. Проведенные сравнительные микробиологические исследования показали реальную возможность продлить сроки хранения полуфабриката из пряных трав до 10 месяцев при соблюдении температурного режима от 00С до 250С и относительной влажности 75%.
ИССЛЕДОВАНИЕ ВЛИЯНИЯ МНОГОСТУПЕНЧАТОЙ ТЕРМИЧЕСКОЙ ОБРАБОТКИ НА ФОРМИРОВАНИЕ МИКРОСТРУКТУРЫ В АВИАЛЯХ С ИЗБЫТКОМ КРЕМНИЯ И ДОБАВКАМИ СКАНДИЯ И ЦИРКОНИЯ
Authors: Арышенский  Евгений Владимирович Арышенский  Евгений Владимирович , Лапшов Максим Александрович , Распосиенко  Дмитрий Юрьевич Распосиенко  Дмитрий Юрьевич , Коновалов Сергей Валерьевич , Малкин Кирилл Александорович , Макаров Владимир Викторович Макаров Владимир Викторович
Published: January 2024

В работе исследовано влияние многоступенчатой термической обработки на формирование микроструктуры в сплавах системы Al-Mg-Si с избытком кремния и добавками скандия и циркония. Для изучения был выбран сплав 0,6Mg1Si0,15Zr0,3Sc и его базовый вариант 0,6Mg1Si. Сплав 0,6Mg1Si0,15Zr0,3Sc был подвергнут трёхступенчатой термической обработке. Её целью было выделить частицы Al3ScZr из пересыщенного твердого раствора, затем растворить кремниево-магниевые интерметаллиды, после чего в ходе искусственного старения выделить частицы β''. Базовый сплав 0,6Mg1Si был подвергнут стандартной для авиалей обработке, состоящей из двух ступеней. Целью первой было растворение кремниево-содержащих интерметаллидов, а второй – выделение β''. После каждого шага термической обработки методами просвечивающей и сканирующей микроскопии исследовалась микроструктура, а также проводились измерения микротвердости. Анализ результатов показал, что при кристаллизации сплава 0,6Mg1Si0,15Zr0,3Sc в нем образуются первичные интерметаллиды типа (AlSi)3Sc с размерами до 10 мкм. Кроме того, в ходе прерывистого распада при остывании литой заготовки также формируются частицы (AlSi)3Sc, представленные в виде иглообразных когерентных дисперсоидов длиной 40 нм и диаметром 10 нм. На первом этапе термической обработки формируется лишь ограниченное число когерентных дисперсоидов (AlSi)3Sc, практически не влияющих на изменение прочностных свойств. Последующая кратковременная закалка не приводит к растворению интерметаллидов, содержащих кремний и скандий. Поэтому при искусственном старении сплава 0,6Mg1Si0,15Zr0,3Sc выделяется меньше частиц β'', чем в сплаве 0,6Mg1Si, в котором имеет место большее пересыщение твердого раствора алюминия атомами кремния.
РАЗРУШЕНИЕ ПЛАСТИНЧАТОГО ПЕРЛИТА ПОВЕРХНОСТИ КАТАНИЯ РЕЛЬСОВ ПРИ ДЛИТЕЛЬНОЙ ЭКСПЛУАТАЦИИ
Authors: Иванов  Юрий Федорович Иванов  Юрий Федорович , Громов  Виктор Евгеньевич Громов  Виктор Евгеньевич , Порфирьев Михаил Анатольевич , Крюков  Роман Евгеньевич Крюков  Роман Евгеньевич , Шляров  Виталий Владиславович Шляров  Виталий Владиславович
Published: January 2024

Методами просвечивающей электронной микроскопии (ПЭМ) выполнен анализ структурно-фазовых состояний и дефектной субструктуры поверхностных слоев рельсов категории ДТ400, изготовленных из электростали Э90ХАВ, после испытаний на экспериментальном кольце РЖД в г. Щербинке (пропущенный тоннаж 187 млн. тонн брутто). Анализ проведен на глубине до 2 мм по радиусу скругления выкружки. Структура рельсовой стали представлена преимущественно зернами пластинчатого перлита, в феррите которого наблюдается дислокационная субструктура, сформированная хаотически распределенными дислокациями и сетками. Выявлено формирование изгибных контуров экстинкции и выявлены источники кривизны–кручения кристаллической решетки. Средние поперечные размеры экстинкционных контуров достигают минимальных значений на глубине 2 мм. Установлена зависимость скалярной плотности дислокаций от расстояния до поверхности выкружки головки рельса. На расстоянии 2 мм от поверхности скалярная плотность максимальна. Показано, что в процессе эксплуатации происходит трансформация перлитной структуры, заключающаяся в разрезании пластин цементита движущимися дислокациями и вытягивание атомов углерода из цементита в ферритную матрицу
ИЗУЧЕНИЕ СВОЙСТВ ЭПОКСИДНОГО КОМПОЗИЦИОННОГО МАТЕРИАЛА, НАПОЛНЕННОГО МОДИФИЦИРОВАННЫМИ МИНЕРАЛЬНЫМИ НАПОЛНИТЕЛЯМИ
Authors: Бекешев Амирбек Зарлыкович , Кадыкова Юлия Александровна , Калганова  Светлана Геннадьевна Калганова  Светлана Геннадьевна , Мостовой Антон Станиславович Мостовой Антон Станиславович , Тастанова Ляззат Кнашевна , Ахметова Маржан Кушкинбаевна , Сарсенбаев Берикбай Онайбаевич
Published: January 2024

С целью повышения свойств наполненных эпоксидных композитов проводилась обработка базальта и хромита в индукционной установке при мощности 2 кВт и времени обработки 60 сек, что обеспечивает кратковременное высокотемпературное воздействия токов высокой частоты на наполнители. Установлено изменение химического состава наполнителей, что связано с удалением несвязанной влаги, оксидной пленки с поверхности частиц базальта и хромита и оксидов тех веществ, температура разложения которых ниже температуры модификации. Методом электронной микроскопии установлено, что после обработки в индукционной установке частицы базальта в значительной степени приобретают игольчатую форму, что положительно сказывается на физико-механических свойствах, т.к. такой наполнитель обладает эффектом микроармирования. Для частиц хромита в результате обработки в индукционной установке изменение структуры происходит в незначительной степени с частичным проявлением игольчатой структуры. Изучение диэлектрических характеристик базальта и хромита до и после обработки в индукционной установке показало, что для минеральных наполнителей в значительной степени увеличивается диэлектрическая проницаемость, что свидетельствует об изменении структуры материала. Изменение химического состава и структуры базальта и хромита после их модификации токами высокой частоты приводит к повышению прочностных характеристик от 7 до 17%.
ФОРМИРОВАНИЕ СТРУКТУРЫ И СВОЙСТВ ЛИТЫХ КОМПОЗИЦИОННЫХ МАТЕРИАЛОВ С ПОВЫШЕННЫМ СОДЕРЖАНИЕМ ЭКЗОГЕННОЙ ФАЗЫ
Authors: Прусов Евгений Сергеевич , Шабалдин  Иван Владимирович Шабалдин  Иван Владимирович , Деев Владислав Борисович Деев Владислав Борисович
Published: January 2024

Актуальной задачей в области разработки и совершенствования металлургических технологий получения алюмоматричных композиционных материалов является поиск технических и технологических решений, позволяющих повысить степень усвоения армирующих частиц матричным алюминиевым расплавом для увеличения их предельных концентраций при одновременном обеспечении стабильного качества получаемых материалов. В статье изложены основные результаты отработки технологических приёмов механического замешивания порошкообразных частиц карбида кремния (63–75 мкм) в алюминиевый расплав при номинальном содержании армирующей фазы 25 об.%. Показано, что синтезированные материалы характеризуются равномерным распределением армирующих частиц и отличаются повышенными показателями прочности на сжатие и износостойкости в условиях сухого трения.
ВЛИЯНИЕ ХИМИЧЕСКОГО СОСТАВА НА СТРУКТУРНО-ФАЗОВОЕ СОСТОЯНИЕ И АДГЕЗИОННУЮ ПРОЧНОСТЬ МЕТАЛЛОКОМПОЗИТНЫХ БРИКЕТОВ ДЛЯ ФРИКЦИОННЫХ ПОГЛОЩАЮЩИХ АППАРАТОВ И ТОРМОЗНЫХ КОЛОДОК ТЯЖЕЛОЙ ТЕХНИКИ
Authors: Гаврилов  Сергей Анатольевич Гаврилов  Сергей Анатольевич , Габец  Денис Александрович Габец  Денис Александрович , Гурьев  Михаил Алексеевич Гурьев  Михаил Алексеевич , Иванов  Сергей Геннадьевич Иванов  Сергей Геннадьевич
Published: January 2024

Основные требования, предъявляемые к фрикционным пластинам и тормозным накладкам тяжелой техники - устойчивость к ударным нагрузкам и термоциклам в интервале температур от температуры окружающей среды до 850…870 °С, стабильность коэффициента трения, отсутствие схватывания с материалом тормозных дисков, изготавливаемых из стали либо чугуна, а также максимально возможная удельная энергоемкость материалов тормозных колодок. В настоящей работе проведены металлографические исследований с применением оптической микроскопии и установлено, что неудовлетворительное качество металлокерамического покрытия фрикционной пластины обусловлено локализацией сульфидной эвтектики на границе «керамика-подложка», а также наличием оксидных пленок на поверхности частиц порошков-прекурсоров, что в свою очередь приводит к формированию пористой границы «керамика-подложка». Проведен металлографический анализ влияния различных микродобавок в порошковый прекурсор для формирования металлокомпозитных пластин, таких как медный, никелевый и железные порошки различных фракций. Установлено, что фракционный состав добавляемых порошков в большей степени определяет структурно-фазовое состояние, а также адгезионную прочность границы «керамика-подложка».
Estratificação de áreas de risco de transmissão de sarampo: uma revisão sistemática
Authors: Conceição Paula Barbosa , San Pedro Alexandre , Praça Heitor Levy Ferreira , dos Santos Yasmin Toledo , Reis Larissa Nunes Moreira , Gibson Gerusa
Published: January 2024

Objetivo.

Realizar uma revisão sistemática de publicações científicas que abordaram experiências de aplicação de métodos de estratificação para definir áreas de risco de transmissão de sarampo.

Métodos.

Foram selecionados artigos publicados nos idiomas inglês, português e espanhol em periódicos indexados nas bases SciELO, PubMed e LILACS. A busca utilizou os descritores risk assessment AND measles, sem delimitação de período. Foram excluídos editoriais, artigos de opinião, estudos observacionais de nível individual e publicações que não tratavam da aplicação de métodos de estratificação de áreas de risco de transmissão de sarampo. As informações de ano de publicação, autoria, país de realização do estudo, objetivo, escala geográfica, método utilizado, indicadores e limitações foram extraídas por meio de formulário.

Resultados.

Foram selecionados 13 artigos publicados entre 2011 e 2022 em nove países das seis regiões da Organização Mundial da Saúde (OMS). Desses, 10 tiveram como referência a ferramenta Measles Risk Assessment Tool desenvolvida pela OMS/Centers for Disease Control and Prevention. Apenas um estudo adaptou a ferramenta ao contexto local. Os indicadores utilizados para a estratificação de risco enfocaram uma combinação das dimensões imunidade populacional, qualidade dos sistemas de vigilância e situação epidemiológica. Como dificuldades para a estratificação de risco, destaca-se a produção sistemática de dados com cobertura e qualidade adequadas.

Conclusão.

As estratégias de estratificação do risco de transmissão de sarampo parecem ser ainda pouco difundidas, especialmente na escala local. Reitera-se a necessidade de estímulo à capacitação de recursos humanos para processamento e interpretação das análises de risco nas rotinas dos serviços de vigilância.
Comparative evaluation of physicochemical compositions, antioxidant activities
and microbiological quality of three chili pastes from Carissa carandas L. under
different conditions
Authors: Wanna C. , Soi-Ampornkul R. , Sawangdee Y.
Published: January 2024

The development of chili paste from karanda (Carissa carandas L.) was aimed to obtain a
product which will benefit consumer health and promote the use of Thai herbs to become
functional foods. This research was designed to conduct a comparative evaluation of
physicochemical compositions, total phenolic content (TPC), antioxidant activities,
microbiological qualities, and sensory testing of three karanda chili paste formulas
(formula A, B and C). The physicochemical proximate compositions were analyzed by the
AOAC method. The TPC of the extracts was determined by the Folin-Ciocalteu method.
The antioxidant activities were tested by 2, 2-diphenyl-1-picrylhydrazyl (DPPH)
scavenging DPPH and ferric reducing antioxidant power (FRAP) assay. The results
showed that the colour values of redness (a*) and yellowness (b*) of chili paste in formula
B were lower than others. Formula B was significantly higher than others in protein
content whereas formula C was significantly higher than others in fat, carbohydrate, ash
and energy. The extract of steamed formula A contained the highest TPC (3.94±0.11
milligram gallic acid equivalent per gram of fresh weight (mg GAE/g FW). Similarly, this
extract containing most karanda showed stronger antioxidant capacities, 11.55±0.04
milligram trolox equivalent per gram of fresh weight (mg TE/g FW), and 11.93±0.02
micromole trolox equivalent per gram of fresh weight (µmole TE/g FW) as determined by
DPPH and FRAP assays, respectively. The DPPH and FRAP values of steamed chili paste
were higher compared with unsteamed chili paste in all formulas. Moreover, the steamed
chili paste did not have counts of the total aerobic bacteria, Escherichia coli, yeasts, and
mold that exceeded the community product standard. Overall preference for all formulas
of karanda chili paste was not significantly different, but formula A was the most
acceptable. This study demonstrated that karanda chili paste could retain its antioxidant
activity and help to reduce microbial contamination due to steaming and its spice
phytochemicals; therefore, it could be valuable as a functional food for preventing
oxidative stress-mediated human disorders.
A survey to investigate the heterogeneity of food date labelling and the
consumer’s knowledge and practice on food date labelling in Bangi, Selangor,
Malaysia
Authors: S.N. Mohd Fadzil , Nordin Y. , Chang W.S. , Loo Y.Y. , Tan C.W. , Kuan C.H. , Ungku Zainal Abidin U.F. , R. Son
Published: January 2024

There are different types of food date labelling for different groups of food. However,
many food retailers did not follow the regulation and make consumer confuse. Besides,
consumers are also not aware of the food date labelling. This study aimed to investigate
the heterogeneity of food date labelling and storage instruction in the hypermarket and to
investigate the consumers’ knowledge and practices on food date labelling. In this study,
the usage of the expiry date of refrigerated food products which were pre-packed fruits
and vegetables, cheese, milk, juices, cream, dessert, ice cream, yogurt, smoked beef,
salami, roasted beef and meat, and chicken loaf and salad dressing were analyzed. The
frequency of the shelf life label was enumerated. There were 44.3% of refrigerated food
products using the ‘best before’ date while 23.9% used ‘use by’ date. Besides, there were
53.4% of the refrigerated food products with storage instructions while 14.9% of it did not
have any storage instructions. Questionnaires were used to study the knowledge and
practice of consumers towards food date labelling from 385 respondents in Hulu Langat,
Selangor. Findings showed that 45.97% of the respondents were not aware about food
date labelling but 47.01% of the consumer use shelf life label to judge the edibility of food
products. There were 33.77% of the respondent who did not know the difference of food
date labelling. Consumers should understand the difference of food date labelling to
reduce the number of food waste and food borne disease. The number of consumers who
are confused and not aware of food date labelling are worrying. It is recommended for the
retailer to use the standardized label for food.
Immunomodulatory effect of fish oil and its polyunsaturated fatty acid
components
Authors: Lestari L.A. , Fadilah L. , Anchaelsi M.E. , Yasmin N.N. , Estiasih T. , Suseno S.H.
Published: January 2024

Trends in purchasing functional foods and pharmaceutical products as immune boosters in
Indonesia have begun to increase due to the current COVID-19 pandemic situation. One
of them is fish oil, which is known as the oil with the highest polyunsaturated fatty acids
(PUFA) content compared to other oils, especially eicosapentaenoic acids (EPA) and
docosahexaenoic acids (DHA) are well-known to have many health benefits. EPA and
DHA also act as immunomodulators to maintain the immune system. It is shown by the
presence of anti-inflammatory, vasodilating, anti-arrhythmic, and anti-aggregation effects.
Journal articles and national reports published from 2011 to 2021 from several databases,
such as Google Scholar, Scopus, and PubMed were collected to obtain abstract and
original articles related to the immunomodulatory effects of EPA, DHA, and fish oil. This
study highlights the immunomodulatory function of EPA and DHA in fish oil, and several
studies of EPA and DHA in vitro, in vivo, and in human study. The potential health
benefits of fish oil are explored, especially to evaluate the immunomodulatory effect of
fish oil.
New Law Enforcement Impact on the Prevention of Road Accidents in Kosovo
Authors: Baxhuku Visar , Doçi Ilir , Rexhepi Jeton
Published: January 2024

The strengthening of law enforcement is one aspect of traffic accident prevention initiatives that is not to be overlooked. Studies have shown that increasing law enforcement can have an impact of up to 8% (a case study in Sweden). Since the Law on Traffic Safety was replaced in 2016 with the Law on Traffic Regulations, we have been examining the Kosovo instance to determine the effects of stepping up law enforcement. The impact will be measured using statistical data from prior years and the time frame after the new law's implementation. Only those traffic fines that were directly related to the causes of accidents were used in the analysis, which compared the increase and decline of these numbers over time. The objective is to determine the ultimate actions or modifications that will have the greatest impact by measuring the impact in real values. Given that the trend of accidents by causes may be tracked for all kinds of road accidents, the high number of traffic fines classified according to the causes of accidents is a new development in the field of studies on the relationship between measures and the number of accidents. Doi: 10.28991/CEJ-2023-09-12-011 Full Text: PDF
The Impact of Shear Reinforcement Amount and Arrangement on the Shear Capacity of Shallow RC Beams: An Experimental Study
Authors: Soliman Ahmed A. , Mansour Dina M. , Khalil Ayman H. , Ebid Ahmed
Published: January 2024

This study investigates the impact of shear reinforcement amount and arrangement on the shear capacity of shallow/wide RC beams. Seven specimens of shallow/wide beams with different ultimate shear reinforcement stress (μ.Fys), longitudinal spacing to depth ratio (S/d), and transversal spacing to depth ratio (S’/d) were tested under a monotonic three-point bending test. All the specimens were designed to fail at shearing. The results showed that the shear reinforcement was fully functioning until it yielded; also, the amount of shear reinforcement had the major impact on the shear capacity; in addition, the transverse spacing had more influence on the shear capacity than the longitudinal spacing. The measured shear capacities were compared to six design codes, in which the results ranged from 95% to 110%, with the Japanese code (JSCE) being the closest to the experimental results. Two AI-based predicting equations, “Genetic Programming” (GP) and “Evolutionary Polynomial Regression” (EPR), were also compared to the experimental, with accuracies of 78% and 86% of the measured capacities, respectively. Initial stiffness, final stiffness, dissipated energy, and ductility were all discussed for the seven specimens, with ultimate shear reinforcement stress being the most impactful on the total shear capacity of the wide beams. Doi: 10.28991/CEJ-2023-09-12-013 Full Text: PDF
Optimizing Time Performance in implementing Green Retrofitting on High-Rise Residential by using System Dynamics and M-PERT
Authors: Husin Albert E. , Prawina Riza S. , Priyawan Priyawan , Pangestu Rizkiawan , Kussumardianadewi Bernadette D. , Sinaga Lastarida , Kristiyanto Kristiyanto
Published: January 2024

Climate change is a threat and crisis that is engulfing the world today; therefore, the target of Net Zero Emission (NZE) by 2060 should be an obligation for all countries. The greenhouse effect, global warming, destruction of the ozone layer, forest destruction, uncontrolled use of CFCs, and industrial exhaust are factors that cause climate change. The consequences of climate change are dire, resulting in drought, water scarcity, land fires, rising sea levels, flash floods, melting polar ice caps, storms, and a decline in biodiversity. Green buildings (GB) are important in saving energy, water, and other resources by meeting technical construction standards and applying green building principles according to their function and classification at each stage of their implementation. Buildings with measurable performance. Expected to reduce carbon or greenhouse gas emissions. The latest Technical Guidelines for Green Building Performance Assessment Standards were developed through regulations from the Ministry of Public Works and Public Housing (PUPR) No.1 of 2022. The way to improve and find a solution to achieve a Green Building according to these regulations is by applying solar modules as an alternative energy source in the building under study, providing significant added value to the assessment process. This research aims to analyze whether the renewable energy source factor is an influencing factor in the application of the Ministry of PUPR Green Building in High-Rise Residential. This research framework is at least initiated from matters where M-PERT, which is an innovation and the latest method of continuation of the PERT method, is proven to be able to provide an accuracy of planning execution time of 99% or with an error rate of 1%. From the research results with the application of M-PERT, it is proven that it can provide an accuracy of implementation time of 98.93% in the Primary Rating, while in the Intermediate Rating, it can provide an accuracy of implementation time of 99.92% and 98.88% accuracy of implementation time for the Main Rating category. Doi: 10.28991/CEJ-2023-09-12-07 Full Text: PDF
Optimization Studies of Iron Ore Tailings Powder and Natural Zeolite as Concrete Admixtures
Authors: Al-Khazaleh Mahmoud , Krishna Kumar P.
Published: January 2024

The disposal of Iron ore tailings Powder (IP) is the primary concern for numerous steel industries. Similarly, natural zeolite, a significant by-product of volcanic eruptions, pollutes the environment to an extreme degree. This study investigates and implements the extensive use of IP and natural zeolite as admixtures in M20-grade concrete in order to address the challenges posed by IP and zeolite. By varying the admixture percentage, three distinct mix ratios were formed. First, sand was replaced by iron at concentrations of 5%, 10%, 15%, and 20%. Second, cement was replaced by zeolite at 5%, 10%, 15%, and 20%. In the final mixture, both sand and cement were substituted with iron ore powder and zeolite, respectively, at 5%, 10%, 15%, and 20%. Conplast SP 430, a water-reducing admixture, was used in all of the mixtures at 1% by weight of cement. The mechanical properties of concrete, including compressive strength, split tensile strength, and flexural strength, were studied. To evaluate the long-term properties of admixture-modified concrete, durability tests such as permeability tests, water absorption tests, rapid chloride attack tests, acid attack tests, and sulphate attack tests were conducted. In addition, slump cone tests and thermal conductivity tests were conducted on all the mix combinations to determine the changes in workability and thermal conductivity coefficient. The test results demonstrated that a mix containing 10% zeolite replaced with cement and 10% iron ore tailing powder replaced with sand has the highest performance in terms of strength and durability characteristics. The study also constructs a comparable cost estimate to ensure that its actual implementation is feasible. Doi: 10.28991/CEJ-2023-09-12-08 Full Text: PDF
Effect of Infills on the Response Modification Factor for Infilled Reinforced Concrete Frame Buildings
Authors: Helmy Dina Hesham , Okail Hussein , Zidan Mostafa
Published: January 2024

RC frames with unreinforced masonry infill walls are the most common type of building. Unreinforced masonry walls are often not considered by engineers in the design process, although walls and frames interact during strong ground motion, leading to structural responses deviating radically from what is expected in the design. Under lateral load, reinforced concrete confining members (frames) act in tension or compression, depending on the direction of the lateral seismic pressures. Meanwhile, masonry walls act as diagonal struts prone to compression. This research aims to develop the effect of masonry infills and their distribution on the value of the resulting response modification factor. For this purpose, a parametric study was performed on five, seven, and ten-story' buildings modeled as bare and infilled frames. Infill ratio, panel aspect ratio, unidirectional eccentricity, and bidirectional eccentricities were the parameters investigated. Each proposed model's resulting response modification factor was compared to the value cited in different international codes. It was concluded that this value differs depending on several parameters and cannot be constant for a certain structural system. The novelty of this research is the deduction of a general equation to calculate the response modification factor as a function of the percentage of infills and the eccentricity, while presenting two different methods to calculate it. Doi: 10.28991/CEJ-2023-09-12-09 Full Text: PDF
Dating of Cambrian-Ordovician boundary strata in northernmost Vietnam and methodological aspects of evolutionary biostratigraphic inference
Authors: Dzik Jerzy , Phong Nguyen Duc
Published: January 2024

Unrepeatability of evolution and the correspondence of the fossil record to ancestor-descendant successions of species are the unavoidable, although usually hidden, assumptions in any reliable age determination based on fossils. We expose these assumptions while dating early Paleozoic carbonate rock deposits in the Lung Cu section at the Vietnamese/Chinese border. The best-preserved and most abundant fossils in this section are shumardiid trilobites. The succession of shumardiid species, based on data from elsewhere, provides an evolutionary reference standard. The shumardiid record is not sufficiently complete to verify hypotheses of ancestor-descendant relationships but enables estimation of the "degree of evolutionary advancement" of the Vietnamese species. This suggests an age close to the Cambrian/Ordovician boundary. Although considered non-scientific by cladists, such inferences are testable. Support for a late Furongian or early Tremadocian age is provided by the occurrence of Cordylodus conodonts in strata above the trilobite-bearing bed. The conodont evolution has a good fossil record interpreted in population terms in the Baltic region and Australia, including the lineage represented in Vietnam. Age determination based on such evolutionary reasoning is reliable but of a relatively low resolution, because the rate of morphological evolution is generally low. Generally, more precise dating is offered by distribution of fossils controlled by ecological factors, which are repeatable and mostly diachronous over large geographic distances, but they may have happened relatively rapidly. The appearance of the Iapetognathus-Chosonodina-bearing conodont assemblage in the Lung Cu area, as suggested by its occurrences elsewhere, was probably due to abrupt faunal migration into the region.
Special Issue on Consortia
Authors: Horton Valerie
Published: January 2024

Volume 7, issue 1 of Collaborative Librarianship explores exciting new projects taking place in library consortia. Greg Pronevitz and I have coedited this issue. Whether you work in a consortium or are a member of one, or more likely a member of five or six different consortia, this issue has an article for you.
Occam’s Reader: The First Library-Developed Ebook Interlibrary Loan System
Authors: Litsey Ryan , Ketner Kenny
Published: January 2024

An ebook interlibrary loan system called “Occam’s Reader” was developed through collaboration among libraries of the Greater Western Library Alliance. The first of its kind, Occam’s Reader has proved to be a great success due in no small measure to thorough planning, testing, implementation and development through 2012 to 2104. A new version of the system, Occam’s Reader 2.0 is planned for later in 2015. As libraries band together to accomplish a collaborative goal, there really is nothing that can hold them back.
Home Grown Ebooks: North Carolina’s Collaborative Ebook Pilot Project
Authors: Morris Jill
Published: January 2024

This article describes how NC LIVE, a large, statewide, multi-type library consortium piloted new models for funding and purchasing a shared ebook collection that concentrated on books published by local publishers. Although the pilot is still being evaluated, the consortium counts the project as a success in that 200 libraries statewide gained unlimited simultaneous user access to more than 1,200 titles not previously available in libraries. NC LIVE is now working with publishers and a platform provider to move the ebook pilot into its next phase as a full-fledged ebook program. The aim of this article is to describe the process used, major decision points, and the challenges and opportunities NC LIVE experienced throughout the development of its Home Grown Ebook Collection in hopes that others interested in similar models might benefit.
Promoting Innovation: The WiLS Model
Authors: Coffin Andrea , Morrill Stefanie
Published: January 2024

WiLS, a membership organization of over 600 libraries of all types in Wisconsin and beyond, has developed a model to help its member libraries turn their good ideas into innovative services and projects. This paper details what it means to innovate in the current library climate and describes the model, its critical facets, how it promotes innovation, how WiLS has implemented it internally, and ways WiLS has worked to broaden the impact of the model.
Communication in Library Consortia
Authors: Lee Matt , Horton Valerie
Published: January 2024

The authors interviewed ten library consortia leaders and studied the communication tools used by a number of consortia. Library consortia employ a broad range of communication tools to share information with their libraries. Different methods are used for different purposes, but a hierarchy of utility emerged from our study. Certain communication vehicles anchored nearly every communication message, some provided secondary support, and others suited highly specialized needs. This paper reviews shared communication methods, highlights communication best practices, and shares unique communication ideas employed by library consortia.
Consortial Ebook Platforms: An Update and Good News
Authors: Pronevitz Greg
Published: January 2024

I welcome you to Collaborative Librarianship’s new column: “Consortial Conversations.” I am your co-columnist, Greg Pronevitz. I am the Executive Director of the Massachusetts Library System (MLS), a state-funded multitype collaborative with about 1,600 member libraries in all corners of the Commonwealth, with a staff of 25 FTE, and a governing board comprising 15 member library representatives. Valerie Horton, Director of Minitex, and I will alternate as your columnist in every other issue of Collaborative Librarianship.
Review of Library Consortia: Models for Collaboration and Sustainability
Authors: Slaughter Anne
Published: January 2024

A review of: Horton, Valerie, and Greg Pronevitz, eds. Library Consortia: Models for Collaboration and Sustainability. American Library Association, 2014. 202 p.
HOMOEOPATHIC MANAGEMENT OF TARGETED HAEMARTHROSES IN INHIBITOR POSITIVE HAEMOPHILIAC: A CASE REPORT
Authors: Kumat Omkar , Kundu Tapas , Mirza Gulfisha , Kundu Rita
Published: January 2024

Haemarthroses is common presentation in haemophilia patient. Due to recurrent use of clotting factor concentrates for treatment and prophylaxis, of which about 20 % of patients produce antibodies to factor VIII and factor IX. This results in development of inhibitors in such patients which complicates the case even more. Homoeopathy the alternative form of treatment can be used in such case. This case report presents the management of haemarthroses in a haemophilia inhibitor. Well selected homoeopathic similimum helped in reversing the haemophilic arthropathy in left knee joint of the patient and even controlled the recurrence of the haemarthroses in target joint. The result was assessed using Hemophilia joint health assessment scale (HJHS). The result of before and after treatment was extremely significant with a p value of 0.0009 The individual curative response of the case was assessed using Modified naranjo criteria for homoeopathic case reporting, casual attribution (MONARCH).
APPLICATION OF THE TAM MODEL AND FINANCIAL LITERACY IN QRIS DIGITAL PAYMENT DECISIONS (STUDY ON SEMARANG STATE POLYTECHNIC STUDENTS)
Authors: Wijayanto Edi , Widiyati Sri , Rois Muhammad , Listyani Tyas , Fatati Manarotul
Published: January 2024

The rapid evolution of digital technology, especially in the digital economy and payment sector, has driven the widespread adoption of digital payment services utilizing QR Codes. The Quick Response Code Indonesian Standard (QRIS), introduced by Bank Indonesia and the Indonesian Payment System Association (ASPI) on August 17, 2019, serves as the national QR code standard, facilitating QR code-based payments across Indonesia. QRIS presently allows the acceptance of payment applications, whether from banks or non-banks, at various establishments. This study, involving 370 students from a population of 6,128, utilizes the Structural Equation Model (SEM) for analysis, demonstrating a robust fit with a GFI value surpassing 0.917. The findings reveal that TAM variables—perceived ease of use, usefulness, enjoyment, and financial literacy—significantly influence the interest in adopting QRIS for digital payments, supported by probability values below 1%.
COMPATIBILITY ANALYSIS OF THE SOIL CALCIUM CONTENT BY MULTIFREQUENCY EC SENSORS
Authors: Horváth János , Kátai László , Szabó István
Published: January 2024

Nowadays in precision agriculture, the on-the-go measurement of soil nutrients is an important research topic in the sustainable nutrient management practices. Determining the nutrient content of soils and the judicious and site-specific replacement of missing mineral compounds of soil has a major impact on production costs in terms of current fertilizer prices. Soil sensors currently on the market can only determine total soil salinity. Therefore, selective soil salinity testing is only possible using laboratory methods. However, these methods are rather expensive, slow, and cumbersome. Growers often need faster and cheaper soil sampling process and immediate results. We believe that by developing measurement models of soil sensors, the data delivery process could be significantly shortened, so that measurement results could be processed and used even in real time. In this paper, we prove that electrical conductivity measurements can be a suitable tool for the determination of the selective salinity of soil. In our experiments, the calcium cation content of soil was measured by conductometry in laboratory conditions. In our model, we investigated the effect of a reasonable and well-considered variation of the measuring current frequency on the measurement output variable, i.e. the electrical conductivity (often abbreviated as EC) value. Our experiments have shown that with multi-frequency, solutions containing predetermined concentrations of Ca2+ ions, the EC obtained as an output parameter follows different functions.
STUDENTS' ENGAGEMENT WITH SOCIAL MEDIA REELS: SCOPE FOR NEWS OUTLETS
Authors: Kannan S. , Anuradha M.
Published: January 2024

Youth in a country like India have undergone drastic lifestyle changes as a result of social media. Their engagement goes beyond just viewing or creating content. Since 230.25 million people use short videos, India is the biggest market for Instagram reels. Even after social activists, parents, and researchers point out a number of drawbacks, 54% of young people in India do not want to stop using social media, according to Pew Research (2012). The engagement ratio has also gone up to 800 likes on average (Daniel Ruby, 2022). In January 2022, India had 17.8% of its population using Instagram, among which the most frequent users were aged between 18 and 24. The use of social media reels among the Gen Z category has gone up. Hence, the present study tries to address the following objectives using a mixed-methods approach: a survey using a structured online questionnaire and a focus group discussion among students. The findings of the study would help media outlets market their news content to a wider audience on one side and develop the habit of consuming news among the Gen Z audience.
Determinasi preferensi konsumen, online customer review, kualitas website dan keamanan, terhadap kepuasan konsumen dengan kepercayaan konsumen sebagai pemediasi
Authors: Kumbara Vicky Brama , Neldi Mondra , Diana Yusvi , Ridwan Muhammad
Published: January 2024

pandemi Covid-19 mengubah pola belanja orang Indonesia khususnya di Kota Padang. Terbukti, dengan semakin meningkatnya jumlah orang yang berbelanja melalui platform online. Penelitian ini bertujuan untuk mengetahui pengaruh preferensi konsumen, kualitas website dan keamanan, terhadap kepercayaan konsumen yang berbelanja online di Kota padang yang dimediasi oleh kepuasan konsumen. Metode penelitian yang digunakan adalah meotode Partial Least Square (PLS). PLS merupakan model persamaan Structural Equation Modeling (SEM) yang berbasis elemen atau varian dengan menggunakan Smart PLS 3.2.9. Sampel dalam penelitian ini berjumlah 140 responden. Hasil penelitian menunjukkan bahwa preferensi konsumen berpengaruh positif dan signifikan terhadap kepercayaan konsumen. Kualitas website berpengaruh positif dan signifikan terhadap kepercayaan konsumen. Keamanan berpengaruh positif dan signifikan terhadap kepercayaan konsumen. Dan juga terdapat pengaruh positif dan signifikan antara variabel preferensi konsumen terhadap kepuasan konsumen. Kualitas website berpengaruh positif dan signifikan terhadap kepuasan konsumen. Kepercayaan konsumen berpengaruh positif dan signifikan terhadap kepuasan konsumen. Implikasi dalam penelitian ini diharapkan e commerce di Kota Padang  dapat  terus  melakukan inovasi dan memberirikan rasa mana kepada konsumen serta mampu memberikan kepuasan kepada konsumen.
Integrated Science Interactive E-Book Local Potential of Kulon Progo: An Overview of Teacher and Student Needs
Authors: Yanarti  , Jumadi  , Kuswanto Heru
Published: January 2024

This research aims to analyze the needs of students and teachers for the development of interactive e-books that are integrated with the local potential of Kulon Progo. This research is qualitative research with a case study approach. Data collection uses needs analysis questionnaires, interviews and documentation. A needs analysis questionnaire was given to 156 students of SMPN 1 Nanggulan Kulon Progo. Interviews were conducted with two science teachers at SMPN 1 Nanggulan Kulon Progo. Interview and questionnaire data analysis techniques use qualitative descriptive. The results of this research are 1) aspects of the student learning process tend to be passive with varying student learning motivation; 2) aspects of using interactive learning media have never used interactive e-books for learning; 3) aspects of student characteristics in understanding concepts are still lacking, preferring to use smartphone media and practicums when learning; 4) the aspect of integrating science with the local potential of Kulon Progo has never been used in learning. Based on data analysis, it can be concluded that teachers and students need interactive e-books that are integrated with the local potential of Kulon Progo to support the learning process.
Blended Learning-Based Guided Inquiry: Strengthening the Science Process Skills Through Colloid Learning
Authors: Bakti Iriani , Hafizah Reni , Sholahuddin Arif
Published: January 2024

Science process skills play a crucial role in constructing knowledge and fostering the ability to independently solve problems. Despite their significance, the science process skills of students across various educational levels remain at a relatively low level. This research seeks to evaluate the science process skills of students and their responses to learning about colloids through a blended learning-based guided inquiry approach. The research employs a quasi-experimental design with a pretest-posttest control group setup. The sample, drawn through cluster random sampling, consists of students from Class XI MIPA 1 at SMAN 11 Banjarmasin, divided into two groups. Group A, the experimental class, engages in blended learning-based guided inquiry, while Group B, the control class, follows the guided inquiry model. Data collection involves tests to assess students' science process skills and non-tests to gauge their responses. The analysis entails descriptive techniques and t-tests. The findings indicate (1) discernible differences in science process skills between classes employing blended learning-based guided inquiry and guided inquiry alone, and (2) a positive response from students towards the blended learning-based inquiry model.
Influence of Human Resources Competency and Service Quality on General Patient Satisfaction that Impact on Return Visits at the Husein Family Clinic
Authors: Nasution Sri Wahyuni , Lumbanraja Dhea Rebeca , Ginting Chrismis Novalinda
Published: January 2024

Human resource competence (HR) is needed in the Husein Family clinic as a clinic that provides health services to the community. Patients will feel happy when they want health services and know that in a clinic there are medical personnel who have reliable human resource competencies. Then the quality of service will provide satisfaction to patients who come to the Husein Family clinic so that patients will come to visit again to get health services at the Husein Family Clinic. This study aims to see the effect of human resource competence and service quality on patient satisfaction. As the population in this study were patients who came for treatment at the Husein Family Clinic as many as 60 patients who were collected by random sampling per day as many as 2 people for a month. The results of the study explained that human resource competence had an effect on patient satisfaction by 15.5%, service quality had an effect on patient satisfaction by 24.4% and human resource competence and service quality had a joint effect on patient satisfaction at the Husein Family Clinic by 22.4%.
Strategies for Enhancing Early Childhood Science Literacy Through STEAM Education
Authors: Habibi M.A Muazar
Published: January 2024

The primary objective of this study is to enhance young children's comprehension of scientific concepts by implementing the STEAM approach within the context of Early Childhood Education (PAUD). The STEAM (Science, Technology, Engineering, Art, and Mathematics) pedagogy for preschoolers emphasizes dynamic learning, stimulates cognitive engagement, facilitates problem-solving, nurtures structured and methodical reasoning, and enhances critical thinking skills. Conducted using the Classroom Action Research method guided by the Kemmis cycle model, this study involves a cohort of 15 participants from group B, aged 5-6 years, and spans across preliminary cycles, Cycle I, and Cycle II, comprising phases of planning, execution, observation, and reflection. The comprehensive deliberation's outcome establishes the potential for enhancing scientific literacy among young children through the implementation of STEAM education. This advancement in scientific understanding is facilitated through captivating balloon experiments, utilizing colors that resonate with children's preferences. The attainment of scientific knowledge, as evident through the STEAM approach, manifests at a rate of 10% during the Pre-Cycle, 26% during Cycle I, and an impressive 72% during Cycle II. The cumulative findings unequivocally underscore the profoundly positive role of STEAM pedagogy in augmenting scientific cognizance during the formative years of early childhood.