bluuebunny/crossref_metadata_2025 huggingface dataset:
SOFTWARE ARCHITECTURE OF HIGH-PRODUCTIONCOMPLEXES FOR TEXT OF THE NEWS PROCESSING FOR SOLVING THE PROBLEMS OF DATA MINING
Authors: Отраднов К.К. , Алёшкин А.С. , Жуков Д.О.
Published: July 2024

В статье предложена архитектура программного обеспечения обработки коллекций новостных текстовых сообщений, а также соответствующий состав и структура информационной системы. Система представляет собой несколько ступеней получения и обработки информации, функционирующих на базе гибридного вычислительного кластера. Каждый этап получения, обработки и сохранения информации в обобщенной информационной системе представлен микросервисом как отдельной программной единицей. При этом подчёркнута возможность использования различных стеков технологий для каждого микросервиса так, что правильно подобранные специализированные решения повышают эффективность и качество результата, а недостатки классической микросервисной архитектуры нивелируются внутренней неоднородностью микросервисов, выраженной в виде гибкой модуляризации. Суть предлагаемого подхода заключается в применении принципа конвейерного параллелизма на базе микросервисной архитектуры с динамическими границами сервисов.

The article proposes the architecture of the software for processing collections of news text messages, as well as the corresponding composition and structure of the information system. The system is a few steps of obtaining and processing information, functioning on the basis of a hybrid computing cluster. Each stage of receiving, processing and storing information in a generalized information system is represented by a microservice as a separate program unit. At the same time, the possibility of using different technology stacks for each service is emphasized so that properly selected specialized solutions increase the efficiency and quality of the result, and the shortcomings of the classical micro-service architecture are offset by the internal heterogeneity of the micro-services expressed in the form of flexible modularization. The essence of the proposed approach is the application of the principle of pipeline concurrency based on a microservice architecture with dynamic service boundaries.
PARALLEL IMPLEMENTATION OF SYMMETRIC HORIZONTAL DISTRIBUTION OF DATA ON THE NETWORK TECHNOLOGIES BASIS
Authors: Мунерман В.И. , Мунерман Д.В.
Published: July 2024

В работе рассмотрен подход к построению программно-аппаратных комплексов для реализации симметричного горизонтального распределения таблиц в реляционных базах данных. Для решения поставленной задачи предложено использовать стандартные технологии разработки сетевого программного обеспечения. Показано, что наиболее эффективным методом служит построение (WEB API)-приложения. Это позволяет независимо от платформы, использовать средства разработки, подобные ASP.NET Framework и паттерны технологии программирования MVC. Дано описание методов построения такого программного обеспечения. На основе этого подхода сделана сетевая реализация алгоритма бустрофедона, с помощью которого выполняется симметричное горизонтальное распределение таблиц в реляционной базе данных. Приведены результаты вычислительного эксперимента, показавшего эффективность предложенного подхода.

The approach to the construction of software and hardware complexes for implementing a symmetric horizontal distribution of tables in relational databases is considered. To solve this problem, we propose to use standard technologies for the development of network-software. It is shown that the most effective method is the construction (WEB API)-application. This allows regardless of the platform, to use development tools similar to the ASP.NET Framework and the patterns of MVC programming technology. A description of the methods of building such software is given. On the basis of this approach, a network implementation of the Boustrophedon algorithm is made, with the help of which a symmetrical horizontal distribution of tables in a relational database is performed. The results of a computational experiment showing the effectiveness of the proposed approach are presented.
Viability and decorative qualities of plants of the genus Syringa L. when introduced into the Arctic zone of Russia (on the example of the Polar-Alpine Botanical Garden-Institute)
Authors: Гончарова О.А. , Зотова О.Е. , Липпонен И.Н. , Полоскова Е.Ю.
Published: July 2024

Статья содержит список интродуцированных образцов рода Syringa L. в Полярно-альпийском ботаническом саду-институте. В коллекционном фонде ПАБСИ 37 образцов интродуцированных растений рода, относящихся к 10 видам, 3 подвидам и 3 гибридам. Возраст коллекционных сиреней от 16 до 84 лет, основная часть растений находится в интродукционном эксперименте более 50 лет. Большинство обследованных образцов сирени является вполне жизнеспособными и жизнеспособными и отличаются высокими декоративными качествами. Наиболее жизнеспособны, перспективны для интродукции и обладают высокими декоративными качествами Syringa villosa, Syringa villosa subsp. wolfii, Syringa tomentella subsp. sweginzowii, Syringa josikaea. Исследование является одним из этапов комплексного описания декоративных качеств растений рода при интродукции в условия Крайнего Севера.

The article contains a list of introduced samples of the genus Syringa L. in the Polar-Alpine Botanical Garden-Institute. The collection fund of PABSI contains 37 samples of introduced plants of the genus belonging to 10 species, 3 subspecies and 3 hybrids. The age of the collection lilacs is from 16 to 84 years, the main part of the plants has been in the introduction experiment for more than 50 years. Most of the examined samples of lilacs are quite viable and viable and are distinguished by high decorative qualities. The most viable, promising for introduction and have high decorative qualities Syringa villosa, Syringa villosa subsp. wolfii, Syringa tomentella subsp. sweginzowii, Syringa josikaea. The study is one of the stages of a comprehensive description of the decorative qualities of plants of the genus when introduced into the conditions of the Far North.
PROVIDING OF TEMPERATUREHUMIDITY CHARACTERISTICS IN CLEANROOMS OF MICROELECTRONICS
Authors: Тхеин Х. , Рябышенков А.С.
Published: July 2024

Система кондиционирования воздуха играет важную роль в поддержании внутрипроизводственных параметров (температуры, влажности и т.п.) в чистом помещении (ЧП) микроэлектроники. Цель работы – исследование процессов тепло-влажностных характеристик в ЧП. При выполнении работы решались задачи: анализ теории процессов тепло-, влагообмена в ЧП; выбор модели для симуляции воздушного потока в среде программы SOLIDWORKS. При следующих начальных и граничных условиях: геометрические размеры ЧП 5 ИСО (8×6×3) м, технологический процесс – литография, при значениях температуры воздуха (21,5; 22; 22,5) °С и его влажности (35; 40; 45) %, шесть единиц технологического оборудования и четыре оператора. Построена 3D-модель ЧП класса 5 ИСО в среде SOLIDWORKS и симулирована его структурная схема при указанных параметрах воздуха. Результаты компьютерного моделирования показывают реальное распределение температуры воздуха и его влажности в ЧП 5 ИСО.

The air conditioning system plays an important role in maintaining the indoor air parameters (temperature, humidity, etc.) in a cleanroom of microelectronics. The purpose of the presented work is to study the processes of heat and humidity characteristics in the cleanroom. In carrying out the work, the following tasks were solved: analysis of the theory of heat-moisture exchange processes in the state of the cleanroom; selection a model for airflow simulation in the SOLIDWORKS program. At the following initial and boundary conditions: geometric dimensions of the cleanroom ISO 5 (8×6×3) m, technological process – lithography, at air temperature (21,5; 22; 22,5) °C and its humidity (35; 40 ; 45) %, 6 units of process equipment and 4 operators. 3D-model of the cleanroom of ISO 5 in the SOLIDWORKS program is constructed and its structural scheme is simulated for specifi ed air parameters. The results of computer simulation show the actual distribution of air temperature and humidity in the cleanroom of ISO 5.
ENVIRONMENTALLY SAFE SYSTEM OF AGROTECHNOLOGIES AT POLYVE
Authors: Юрченко И.Ф.
Published: July 2024

Цель работы – рационализация структуры агротехнологий орошаемого земледелия, способствующая устойчивости производства продукции на поливе. Выполнен анализ применяемых подходов к разработке и внедрению: мероприятий культивации почвы; посева, посадки, ухода и уборки культур; системы удобрения в орошаемом севообороте; предупреждения вторичного засоления. Выявлены характерные недостатки действующих направлений орошаемого землепользования. Предложены мероприятия совершенствования агротехнологий возделывания сельскохозкультур на поливе, обеспечивающие действенное использование земли, сохранение и воспроизводство продукционного потенциала, достижение высокой и устойчивой урожайности сельскохозкультур.

The goal of the work is to rationalize the structure of agro-techniques for irrigated lands, which contributes to the sustainability of the crops’ productivity under irrigation. The analysis of the exiting approaches to the development and implementation of: soil cultivation: sowing, planting, plant care, crops’ harvesting; systems of fertilizer in crop rotation under irrigation; prevention of the secondary salinity of soils have been carried out. Disadvantages of the existing use of the irrigated land were defined. The proposed measures on improving of agricultural technologies of crops’ cultivation in the irrigated lands are formed an interrelated agronomic, ameliorative, governmental and organizational measures aimed at effi cient use of land, crop production preservation and increase, high and stable yields of agricultural crops.
NEW TECHNOLOGIES OF RECYCLING OF HOUSEHOLD AND INDUSTRIAL WASTE
Authors: Бикбау М.Я.
Published: July 2024

Решение проблемы эффективного управления отходами производства и потребления становится одним из приоритетов развития городов, стран и целых регионов в масштабах планеты. Развитие цивилизации, рост населения и его потребления связаны со значительным возрастанием отходов жизнедеятельности человека, причем ежегодные объемы только бытовых отходов в городах достигают 200...400 кг на одного человека. Общество стоит перед необходимостью создания промышленной индустрии обезвреживания и переработки прежде всего твердых бытовых, а также других промышленных и сельскохозяйственных отходов жизнедеятельности человека. В статье представлены достижения ОАО «Московский ИМЭТ» по одной из важнейших проблем современности, доказавшие возможности полной переработки в полезные материалы и изделия, тепло- и электроэнергию, бытовые и промышленные отходы.

Solving the problem of effi cient waste management of production and consumption is becoming one of the priorities of cities, countries and entire regions of the world. The development of civilization, population growth and its consumption are associated with a signifi cant increase in human waste, and the annual volume of only municipal waste in cities reach 200...400 kg per person. The company is faced with the need to create an industrial industry of neutralization and processing, primarily solid domestic, as well as other industrial and agricultural waste of human activity. This article presents the achievements of JSC «Moscow IMET» on one of the most important problems of our time, proved the possibility of complete processing into useful materials and products, heat and electricity, domestic and industrial waste.
THE RELATIONSHIP OF DENSITY WITH THE SIZES OF ATOMS AND THEIR NUCLEI
Authors: ГОРБАЦЕВИЧ Ф.Ф.
Published: July 2024

Выполнен анализ связи плотности элементов (металлов и полуметаллов) с параметрами атомов и их ядер. Показано, что наблюдается слабая корреляция между плотностью и диаметром атома вещества. Более значимая связь прослеживается между плотностью и диаметром ядра атома. Выявлена высокая корреляция между плотностью и отношением объема ядра к объему атома.

The analysis of the relationship between the density of elements (metals and semimetals) with the parameters of atoms and their nuclei is carried out. It is shown that there is a weak correlation between the density and the diameter of the atom. The relationship between the density and diameter of the atomic nucleus is more significant. A high correlation has been revealed between the density and the ratio of the nuclear volume to the atomic volume.
ON THE TASKS TO BUILD THE GEOMETRY IN SCHOOL TEXTBOOKS IN RUSSIA IN THE 18TH CENTURY
Authors: Прояева И.В. , Колобов А.Н.
Published: July 2024

В данной статье рассматривается один из самых актуальных и в тоже время сложных вопросов геометрии – элементы теории геометрических построений. История различных методов и приемов решения задач на построение насчитывает более двух тысяч лет. В настоящее время проблемы обучения геометрии школьников и студентов вновь выходят на первый план. Основное внимание в работе авторы акцентируют на истории развития теории геометрических построений, анализируя школьные учебники по геометрии в России в XVIII веке. Выделяются и описываются характерные особенности введения данных понятий. Значительное внимание уделяется методической схеме решения задач на плоскости. Представленная в статье история введения основных понятий теории геометрических построений в школьный курс геометрии была рассмотрена в конкретном учебном процессе на лекциях и практических занятиях по геометрии в университете со студентами в курсе «История математики» и позволила повысить эффективность усвоения изучаемого материала.

This article discusses one of the most pressing and complex issues of geometry-elements of the theory of geometric constructions. The history of various methods and techniques for solving tasks of building dates back more than two thousand years. At present, the problems of learning geometry students once again come to the fore. The authors focus on the history of the development of the theory of geometric constructions, analyzing textbooks on geometry in Russia in the 18th century. Identifi es and describes the characteristics of data entry concepts. Considerable attention is paid to the methodological Diagram solution of tasks on the plane. The information provided in the article history of the introduction of the basic concepts of the theory of geometric constructions in school course geometry was considered in particular the educational process at lectures and practical lessons on geometry at the University with students in course History Mathematics and has improved the efficiency of absorption of the studied material.
DEVELOPMENT OF 3D COMPUTER GRAPHICS IN SCIENCE AND CULTURE
Authors: Тявкин И.В. , Войтин А.О.
Published: July 2024

Введены разъяснения по поводу различий и взаимоотношений терминов «виртуальный музей», «электронный музей», «виртуальная реальность». Показаны реализации двух виртуальных проектов: виртуальный тур «Воронцовская коллекция» Тамбовской областной картинной галереи и виртуальный тур «Легенды и придания Тамбовского края» Тамбовского областного краеведческого музея.

An explanation for the differences and relationships of the terms «virtual museum», «e-museum», «virtual reality» was introduced. Two virtual projects showing implementation: virtual tour «Vorontsov’s collection» Tambov regional art gallery, and virtual tour «Legends and giving the Tambov region» Tambov regional local history museum.
To the question of the religious-philosophical views of S. Gubaidulina: literary parallels
Authors: Москвина О.А.
Published: July 2024

В статье вводится понятие толстовства Губайдулиной в качестве одного из составляющих разветвленной системы религиозно-философских взглядов композитора, на данный момент не нашедшего отражения в специальных исследованиях. Толстовство Губайдулиной трактуется как свободное, внецерковное осмысление библейских истин, характерное для творчества и «философии бытия» позднего Толстого. В системе доказательств толстовской идеи – музыкальные и «гуманитарные» аргументы. К первым относится кода двойного концерта «Две тропы», отмеченная прямо-таки толстовским развенчанием религиозной доктрины (представленной в концерте православной колокольностью); «гуманитарный» аспект связывает идеи Губайдулиной с классическим русским романом («In croce»). Казалось бы, точкой расхождения можно считать отношение к так называемому мистицизму, однако и Толстой, и Губайдулина в творчестве (не в словесных памфлетах) трактуют его как своеобразное преломление «вечных» тем, изначально имеющих пограничную природу. Таким образом, применительно к определенному корпусу сочинений (инструментальные произведения с религиозной программой) можно говорить о толстовстве Губайдулиной.

The article introduces the concept of Tolstoy Gubaidulina as one of the components of the branched out system of religious and philosophical views of the composer, which at the moment has not been refl ected in special studies. Tolstoy Gubaidulina is treated as a free, extra-church interpretation of biblical truths, characteristic of creativity and the "philosophy of being" of late Tolstoy. In the system of proofs of Tolstoy's idea – musical and "humanitarian" arguments. The first concerns the code of the double concert "Two Paths", marked by a direct Tolstoyan debunking of religious doctrine (presented in the concert by an Orthodox bell-tower); "Humanitarian" aspect connects Gubaidulina's ideas with the classic Russian novel ("In croce"). It would seem that the point of divergence can be regarded as a relation to so-called mysticism, but Tolstoy and Gubaidulina in creativity (not in verbal pamphlets) interpret it as a kind of refraction of "eternal" themes, originally having a borderline nature. Thus, with reference to a certain body of works (instrumental works with a religious program), one can speak of Tolstoy Gubaidulina.
The methods of automatic moisture measurement of food capillary-porous materials
Authors: СУЗДАЛЬЦЕВ А.Н. , САФРОНОВА Н.А. , АНДРЕЕВ В.О. , АНДРЕЕВ В.О.
Published: July 2024

Рассмотрены методы автоматического измерения влажности капиллярно-пористых материалов. Дано теоретическое обоснование и предложена практическая реализация двух авторских способов контроля и управления влажностью в процессах поточного производства изделий пищевого назначения. Первый метод базируется на использовании модели управления процессом дегидратации, прогнозирующей финальную влажность и необходимое время сушки. Показана перспективность второго метода контроля и управления влажностью изделий из капиллярно-пористого материала в режиме реального времени с использованием весового миниробота.

The methods of automatic moisture measurement of capillary-porous materials are considered. The theoretical substantiation is given and practical realization of two author`s ways of humidity control in processes of flow-line production of food items is offered.The first method is based on the use of a parametric model for controlling the dehydration process, predicting the final moisture content and the required drying time. The prospects of the second method for controlling the moisture content of food items from a capillary-porous material using a weight minirobot are shown.
Investigation of the Disturbing Impact on the Small Space Vehicle Aist According to the Data of Measurements of the Earth’s Magnetic Field
Authors: СЕДЕЛЬНИКОВ А.В. , ТАНЕЕВА А.С. , СЕРДАКОВА В.В. , НИКОЛАЕВА А.С. , БРАТКОВА М.Е.
Published: July 2024

В работе на основе анализа данных измерений вектора индукции магнитного поля Земли проводится оценка возмущающего воздействия на опытный образец (ОО) малого космического аппарата (МКА) «Аист» вблизи магнитного экватора. Эта оценка позволяет рассчитывать параметры вращательного движения МКА и эффективно управлять его движением.

In this work, based on the analysis of the measurement data of the Earth's magnetic field induction vector, an assessment of the disturbing effect on the prototype of the small spacecraft "Aist" near the magnetic equator is carried out. This estimate makes it possible to calculate the parameters of the rotational motion of a small spacecraft and effectively control its motion.
Improving the Accuracy of the Missile Remote Control System by Using a Fuzzy Controller in the Command Generation System
Authors: ДО К.Т.
Published: July 2024

В статье предлогается методика параметрической оптимизации системы стабилизации нормального ускорения (ССНУ) ракеты с минимальным времением переходного процесса в среде Matlab. Далее предлогается методика синтеза системы телеуправления ракет (СТР) путём применения логарифмически-амплитудной характеристики (ЛАХ). С целью упрощения процесса синтеза, в первом приближении принимаем линейную модель ССНУ, СТР и стараемся максимально использовать команды пакета Control System Toolbox (Matlab). Наконец предлогается применение реулятора на основе нечёткой логики для изменения коэффициента преобразования системы выработки команд. Результата моделирования в Simulink показывает, что применение реулятора на основе нечёткой логики в системе выработки команд позволяет значительно уменьшать ошибку наведения СТР.

The article proposes a technique for parametric optimization of the normal acceleration stabilization system (NASS) of a missile with a minimum transition time in the Matlab environment. Next, the synthesis method of a remote control system (RCS) of missiles by applying a logarithmic amplitude characteristic. In order to simplify the synthesis process, as a first approximation, we accept a linear model of NASS, RCS of missile and try to use the commands of the Control System Toolbox (Matlab) package as much as possible. Finally, the use of a fuzzy controller is proposed to change the conversion coefficient of the command generation system. The simulation result in Simulink shows that the use of fuzzy controller in the command generation system allows signifi cantly reduce the guidance error of RCS of missile.
PARTICIPATION OF THE POPULATION OF THE MOUNTAINOUS REGIONS OF DAGESTAN IN DEFENSIVE CONSTRUCTION DURING THE GREAT PATRIOTIC WAR
Authors: Алилов А.Н. , Мурадов М.М. , Алилова К.М.
Published: July 2024

В статье на основе архивных материалов и обширной научной литературы, на фоне сложных исторических событий периода Великой Отечественной войны показана роль народов Дагестана, который в тылу внес огромный вклад в победу над фашизмом. Авторами на конкретных примерах показано как война в тылу изменила привычный уклад жизни горского населения республики. Война обозначила перелом в сознании горского населения Дагестана. Материальные и бытовые лишения только приближали уверенность в общей и конечной победе. Общий настрой на победу становился важным психологическим фактором в жизни простых дагестанцев в тылу.

Based on archival materials and extensive scientific literature, against the background of complex historical events during the Great Patriotic War, the article shows the role of the peoples of Dagestan, which made a huge contribution to the victory over fascism in the rear. The authors show, using specific examples, how the war in the rear changed the habitual way of life of the mountain population of the republic. The war marked a turning point in the minds of the mountain population of Dagestan. Material and domestic hardships only brought closer confi dence in a common and final victory. The general attitude to victory became an important psychological factor in the life of ordinary Dagestanis in the rear.
معوقات استخدام منصات التعلم أثناء جائحة كورونا من وجهة نظر معلمي ومعلمات المرحلة الابتدائية في مدينة الرياض
Authors: الشيباني نورة غازي , الحسين أحمد محمد
Published: July 2024

هدفت الدراسة إلى تحديد معوقات استخدام منصات التعلم أثناء جائحة كورونا من وجهة نظر معلمي ومعلمات المرحلة الابتدائية في مدينة الرياض، والكشف عما إذا كان هناك اختلاف في تحديد المعوقات باختلاف الجنس أو المؤهل العلمي أو الخبرة، واعتمدت الدراسة على المنهج الوصفي المسحي، وتكون مجتمع الدراسة من جميع معلمي ومعلمات المرحلة الابتدائية في المدارس الحكومية في مدينة الرياض البالغ عددهم (19,457)، في الفصل الدراسي الثاني للعام 1442ه/ 2021م، وتكونت عينة الدراسة من (559) معلمًا ومعلمة، اُخْتِيروا بالطريقة العشوائية البسيطة، واستُخْدِمَ الاستبيان أداةً لجمع البيانات، حول معوقات استخدام منصات التعلم أثناء جائحة كورونا، وحُلّلت باستخدام برنامج الحزم الإحصائية للعلوم الاجتماعية (SPSS)، وخلصت نتائج الدراسة إلى أن مستوى درجة المعوقات لجميع محاور الدراسة جاءت بدرجة (كبيرة) وبمتوسط (3.48من5)، وأن المعوقات المتعلقة بأولياء الأمور جاءت في المرتبة الأولى، وثانيا المعوقات التقنية والفنية، وثالثاً: المعوقات المتعلقة بالمتعلم، ورابعاً: المعوقات المتعلقة بالمعلم، وأخيرًا: المعوقات المتعلقة بالإدارة المدرسية. كما لا يوجد فروق ذات دلالة إحصائية بين استجابات العينة حول معوقات استخدام منصات التعلم تبعًا لمتغيرات (الجنس، المؤهل العلمي، عدد سنوات الخبرة). وتوصلت الدراسة إلى توصيات أهمها: دعم أولياء الأمور وتأهيلهم لعملية التعليم عن بعد، من خلال تزويدهم بالمهارات والمعارف والأدوات التي تمكنهم من معرفة أدوارهم الحقيقية في العملية التعليمية، وتوفير البنية التحتية اللازمة لتطبيق التعليم عن بعد.
Nilai Gizi dan Uji Hedonik Brownies Kukus dari Daun Mangrove Rhizophora stylosa
Authors: Utomo Kiki Prio , Simamora Cico Jhon Karunia , Jumiati Jumiati , Pramulya Muhammad , Wahyuni Nelly
Published: July 2024

Daun mangrove telah lama dimanfaatkan oleh masyarakat pesisir sebagai sayuran dan obat tradisional. Kandungan kimia yang ada di daun mangrove memiliki khasiat sebagai antioksidan. Penelitian ini akan memanfaatkan daun mangrove sebagai bahan pembuatan brownies kukus. Brownies kukus merupakan olahan bakery yang sedang diminati saat ini. Pembuatan brownies kukus dengan memanfaatkan daun mangrove diharapkan memberikan nilai ekonomis mangrove selain nilai ekologisnya. Penelitian ini bertujuan untuk menghitung nilai gizi dan menguji tingkat hedonik brownies kukus daun mangrove. Tahapan penelitian terdiri dari penyiapan ekstrak daun mangrove Rhizophora stylosa, pembuatan brownies kukus dengan menggunakan ekstrak daun mangrove, penentuan nilai gizi, dan uji hedonik berupa aroma, rasa, warna, dan tekstur brownies kukus.  Hasil penelitian menunjukkan bahwa brownies kukus daun mangrove mengandung nilai gizi sebesar 3,297 kkal. Tingkat hedonik terhadap aroma, warna, dan tekstur adalah sangat disukai (7), sedangkan rasa memiliki tingkat hedonik 6 (disukai). Berdasarkan nilai gizi dan uji hedonik tersebut maka brownies kukus daun mangrove berpotensi dikembangkan sebagai produk olahan berbasis mangrove
Analisis Garam dari Daun Mangrove Rhizophora stylosa dan Rhizophora mucronata
Authors: Enjella Enjella , Prayitno Dwi Imam , Minsas Sukal
Published: July 2024

Rhizophora sp. merupakan jenis mangrove yang akan menyimpan kelebihan garam dalam daun terutama pada daun yang tua selanjutnya untuk mengatasi kelebihan garam tersebut mangrove akan menggugurkan daun tuanya. Dalam penelitian ini dilakukan ekstraksi garam dari daun tua mangrove, metode yang digunakan dalam penelitian ini adalah eksperimen dengan 3 kali ulangan dan melalui 5 tahap, yaitu 1) pengambilan dan preparasi bahan baku, 2) pembuatan tepung daun mangrove, 3) ekstraksi dan pembuatan garam daun mangrove, 4) perhitungan rendemen serta 5) menganalisa kandungan mineral garam menggunakan alat WDXRF (Wavelength Dispersive X-ray Fluorescence). Analisis yang dilakukan pada penelitian ini adalah rendemen dan kandungan mineral. Hasil penelitian menunjukkan adanya perlakuan yang berbeda antara rasio tepung daun mangrove dan akuades sehingga berpengaruh terhadap rendemen. Adapun tujuan dari penelitian ini adalah untuk mengetahui hasil rendemen dan kandungan mineral yang diperoleh dari garam daun mangrove Rhizophora stylosa dan Rhizophora mucronata. Hasil yang diperoleh dari penelitian ini adalah daun R.stylosa yang sudah berumur tua memiliki kandungan mineral Mg (0,468%), Si (0,163%), P (0,0870%), S (0,358%), Cl (8,04%), K (0,903%), Ca (2,94%), Mn (0,163%), Fe (0,0060%), Br (0,0567), Sr (0,0311%) sedangkan pada daun R.mucronata memiliki kandungan mineral Mg (0,675%), Si (0,253%), P (0,119%), S (0,788%), Cl (6,66%), K (1,36%), Ca (1,51%), Mn (0,162%), Fe (0,0096%), Br (0,0491), Sr (0,0098%).
Produktivitas Alat Tangkap Purse Seine di Pelabuhan Perikanan Samudera (PPS) Kendari Provinsi Sulawesi Tenggara
Authors: Misuari Muhammad Nur , Priyadi Hermawan Gatot , Afandi Syahrul
Published: July 2024

Keberhasilan produksivitas perikanan tangkap sangat dipengaruhi tingkat upaya penangkapan nelayan. Purse seine merupakan jenis alat tangkap untuk menangkap gerombolan ikan. Purse seine memberikan hasil tangkapan lebih banyak dan tidak merusak habitat ikan di laut. Tujuan penelitian ini untuk mengetahui produktivitas penangkapan ikan menggunakan purse seine di wilayah Pelabuhan Perikanan Samudera (PPS) Kendari, Sulawesi Tenggara. Penelitian ini dilaksanakan pada September-Desember 2023. Jenis penelitian merupakan diskiptif kualitatif. Penentuan sampel dengan purposive sampling sebagai objek penelitian yaitu KM. Bunga Nelayan Baru 01 dengan fishing ground di WPP NRI 714. Metode pengambilan data yaitu data primer meliputi teknik pengoperasian dan kapal penangkapan, jenis ikan dari hasil tangkap dan berat spesies hasil tangkapan sedangkan data sekunder dari instansi terkait. Hasil penelitian menyimpulkan produktivitas alat tangkap purse seine di PPS Kendari per trip hasil dari tangkapan tertinggi di trip keempat yaitu sebesar 2.250 kg dengan nilai CPUE sebesar 375, sedangkan tangkapan ikan terendah trip kedua yaitu sebesar 970 kg dengan CPUE sebesar 194. Rendahnya hasil trip kedua diantaranya karena kondisi bulan sedang terang dan  gelombang laut yang tinggi. Produktivitas purse seine dari tahun 2018 sampai 2022 tertinggi tahun 2022 sebesar 19.173.072 kg/tahun dan terendah pada tahun 2021 sebesar 10.085.323 kg/tahun. Produksi rata-rata kapal purse seine sebesar 15.180.883 kg/tahun.
Struktur Komunitas Gastropoda Pada Ekosistem Mangrove di Kawasan Permukiman Desa Sungai Nibung, Kalimantan Barat
Authors: Yugovic Ronalld , Helena Shifa , Kushadiwijayanto Arie Antasari
Published: July 2024

Desa Sungai Nibung terletak di Kabupaten Kubu Raya, Kalimantan Barat dengan luas wilayah hutan mangrove 3,057,92 Hektar. Hutan mangrove merupakan salah satu ekosistem pesisir tropis dan sub tropis yang sangat dinamis dan mempunyai produktivitas yang tinggi mengenai kehidupan biota didalamnya, salah satunya adalah gastropoda. Penelitian ini bertujuan untuk mengetahui struktur komunitas gastropoda dan parameter kualitas perairan yang terdapat di kawasan permukiman Desa Sungai Nibung, Kabupaten Kubu Raya, Kalimantan Barat. Penelitian ini dilaksanakan pada bulan Juli – Agustus 2023. Metode yang digunakan pada penelitian ini adalah metode survey dan untuk penentuan stasiun sampling menggunakan metode purposive sampling. Pengambilan sampel gastropoda dilakukan dengan menggunakan kuadran transek berukuran 10 x 10 m2 dan sub plot berukuran 1 x 1 m2 dengan 5 titik didalamnya. Hasil yang didapat pada setiap stasiun bervariasi, terdapat 15 spesies dengan 7 famili. Jenis yang paling sering dijumpai yaitu Sphaerassiminea miniata dengan kepadatan total 251 ind/m2 . Kisaran indeks keanekaragaman gastropoda 0,93-2,27 dikategorikan rendah sampai tinggi, indeks keseragaman Gastropoda 0,58-0,94 dikategorikan sedang dan tinggi, indeks dominasi gastropoda 0,12-0,51 dikategorikan rendah dan sedang. Kualitas perairan kawasan permukiman Desa Sungai Nibung masuk ke dalam kategori optimal untuk kehidupan dan perkembangan gastropoda.
Non-Pinned, Reversible Spin Crossover in Self-Assembled Monolayers of a Functionalized Fe(II) Scorpionate Complex
Authors: Rodrigues de Miranda Rebecca , Giaconi Niccolò , Pénicaud Margaux , Biwandu Lisa , Buffeteau Thierry , Cortigiani Brunetto , Mannini Matteo , Otero Edwige , Ohresser Philippe , Hillard Elizabeth A. , Poggini Lorenzo , Gonidec Mathieu , Rosa Patrick
Published: July 2024

The spin crossover (SCO) behaviour of molecules in (sub)monolayers is typically significantly altered from that of the bulk: in particular, the SCO can be quenched by direct contact between the SCO molecules and the substrate, known as pinning, which causes problems for potential device applications. Here, an Fe (II) complex is presented that exhibits fully reversible, non-pinned SCO in self-assembled monolayers (SAMs) on template stripped gold substrates. The complex, [Fe(Tp(4-NHCOC10H20SCOCH3))(Tp)] where Tp = tris(1H-pyrazol-1-yl borohydride), has a broad SCO with a T½ of 366 K. The SAMs are uniform and homogeneous, as indicated by Atomic Force Microscopy, and contain the target molecules in a well-oriented layer with the expected thickness for a monolayer of the complex, as revealed by polarization modulation infrared reflection-absorption spectroscopy, time-of-flight secondary ion mass spectrometry and cyclic voltammetry. Variable temperature X-ray photoelectron spectroscopy, as well as X-ray absorption spectroscopy at the Fe L2,3 edges, indicates a reversible SCO in the monolayers that is identical to the bulk behaviour.
Prefix and postfix versions of the SMILE chemical notation
Authors: López-Rubio Ezequiel
Published: July 2024

The SMILE notation has become an open standard for the specification of the structure of chemical compounds. It is most suitable for computer processing of chemical data. In this work, two variants of this notation are introduced, namely the prefix and postfix versions. They are parenthesis-free notations that are designed to represent trees.
Rhodium-Catalyzed 3-Aza-Cope Rearrangement of Protic N-Allyl Enammonium Ylides Enabled by Resonance Assisted H-Bonding
Authors: Anandrao Thorbole Laxman , Muduli Sudhir , Katukojvala Sreenivas
Published: July 2024

Herein, we present the design of a new class of Rh-bound protic N-allyl enammonium ylides and its stereoselective 3-aza-Cope rearrangement. These transient ylides are generated in situ by the Rh-catalyzed reaction of vinyldiazo com-pounds and N-secondary-(Z)--enamino carbonyl compounds, under mild conditions. Mechanistic studies revealed that the resonance-assisted hydrogen bonding (RAHB) of protic enammonium ylide promotes exclusively [3,3] rear-rangement by disfavouring both 1,2-proton transfer (NH-insertion) and direct carbenoid C-C bond formation. This new reaction was used in the synthesis of multi-substituted pyrroles, dihydropyrroles, deuterated pyrroles, tetrahy-droindoles, and pyrroloindole scaffold of an antitumor and UV-protecting agent terreusinone.
A Photothermocatalytic Reactor and Selective Solar Absorber for Sustainable Fuel Synthesis by Ethylene Oligomerization
Authors: Su Magel P. , Aitbekova Aisulu , Salazar Matthew , Li Xueqian , Xiong Shuoyan , Espinosa Matthew , Peters Jonas C. , Agapie Theodor , Atwater Harry A.
Published: July 2024

Utilizing solar thermal energy for thermochemical processes enables sustainable generation of fuels and chemicals. Here, we present a scalable photothermocatalytic reactor with a selective solar absorber that converts sunlight into thermal energy for fuel synthesis. The fabricated absorber achieves a calculated maximum temperature of 249 °C under one sun illumination and 130 °C under ambient operating conditions (25 °C, 1 atm). The application of the photothermocatalytic reactor was demonstrated using an industrially relevant ethylene oligomerization reaction. A homogeneous reaction was performed in a batch mode and yielded a distribution of liquid hydrocarbon chains with 6 to 24 carbon atoms. A heterogeneous reaction was performed in a flowthrough configuration, yielding butene and hexene products. Finally, simulated results for a larger-scale reactor predict spatially uniform maximum temperatures up to 120 °C and 210 °C under one and three sun illumination, demonstrating the potential to generate fuels at bigger scales.
Transition State Searching Accelerated by Deep Learning Potential
Authors: Li Bowen , Xiao Jin , Gao Ya , Zhang John , Zhu Tong
Published: July 2024

The exploration and construction of organic chemical reaction networks hold the potential to clarify complex reaction mechanisms. However, this endeavor encounters challenges, particularly in cases requiring computationally intensive quantum mechanical calculations. In recent years, the remarkable advancement of machine learning (ML) technologies has provided a novel approach to address this issue. ML can effectively utilize vast datasets to build and train complex models, enabling prediction and simulation. In this study, we conducted a performance comparison of deep potential for molecular dynamics (DeePMD), recursively embedded atom neural network (REANN), and neural equivariant interatomic potentials (NequIP) based on the Transition1x dataset. The most efficient model, NequIP, was selected for further analysis. Combined with reaction path search methods such as nudged elastic band (NEB) and growing string method (GSM), this model was employed for the identification and exploration of transition states. The results demonstrate that the success ratio of NequIP combined with the NEB method can reach 96.6%, with a mean absolute error (MAE) of 0.32 kcal/mol for barrier prediction. By adding a modest number of data points, NequIP achieves a MAE of 4.01 kcal/mol for barrier prediction in unexplored chemical reaction space. In the future, by combining different reaction network search methods, we anticipate applying this model to swiftly explore reaction pathways and construct more comprehensive reaction networks. We believe that ML will play a significant role in accelerating the elucidation of unknown chemical reaction mechanisms and in revealing complex reaction networks.
Selective Modification of the Product Profile of Biocatalytic Hydrolyzed PET via Product-specific Medium Engineering
Authors: Heinks Tobias , Hofmann Katrin , Last Simon , Gamm Igor , Blach Luise , Wei Ren , Bornscheuer Uwe T. , Hamel Christof , von Langermann Jan
Published: July 2024

Over the past years, biocatalytic depolymerization of PET, one of the most widely used plastics worldwide, has become very efficient leading to the end products terephthalic acid (TPA) and ethylene glycol (EG) used for PET re-synthesis. Potent alternatives to these monomers are the intermediates BHET and MHET, the mono- and di-esters of TPA and EG which avoid total hydrolysis and can also serve as single starting materials for direct re-polymerization. This study therefore aimed to selectively prepare those intermediates through reaction medium engineering during the biocatalytic hydrol-ysis of PET. After a comparative pre-screening of 12 PET-hydrolyzing enzymes, two of them (LCCICCG, IsPETasewt) were chosen for detailed investigations. Depending on the reaction condi-tions, MHET and BHET are predominantly obtainable: (i) MHET was produced in a better ratio and high concentrations at the beginning of the reaction when IsPETasewt and 10% EG was used; (ii) BHET was produced as predominant product when LCCICCG and 25% EG was used. TPA itself was nearly the single product at pH 9.0 after 24 h due to the self-hydrolysis of MHET and BHET under basic conditions. Using medium engineering in biocatalytic PET-hydrolysis, the product profile can be adjusted so that TPA, MHET or BHET is predominantly produced.
Dynamic Malware Analysis Using Machine Learning-Based Detection Algorithms
Authors: Villarroel Enriquez Erly Galia , Gutiérrez-Cárdenas Juan
Published: July 2024

With the increasing popularity of cell phone use, the risk of malware infections on such devices has increased, resulting in financial losses for both individuals and organizations. Current research focuses on the application of machine learning for the detection and classification of these malware programs. Accordingly, the present work uses the frequency of system calls to detect and classify malware using the XGBoost, LightGBM and random forest algorithms. The highest results were obtained with the LightGBM algorithm, achieving 94,1 % precision and 93,9 % accuracy, recall, and F1-score, demonstrating the effectiveness of both machine learning and dynamic malware analysis in mitigating security threats on mobile devices.
PRODUCTION OF BIODIESEL FROM MICROALGAE CULTIVATED WITH VINASSE
Authors: Oliveira Junior Jairo Pereira de , Cesca Rafaela Silva , Ferreira Isabelle Moreira Souza , Paz Marcelo Fossa da , Menegazzo Mariana Lara , Pinedo Rosalinda Arevalo , Cortez-Vega William Rezo
Published: July 2024

Purpose: The objective of this work was to carry out the cultivation of the microalgae Chlorella sorokiniana with diluted vinasse, verifying its potential for remediation of nutrients and increase of its lipid fraction, to produce biodiesel according to the current regulation.
 
Theoretical Framework: The quest to reduce fossil fuels, which are responsible for negative environmental impacts, has boosted the demand for biofuels in recent years. Biodiesel has been gaining prominence as a promising alternative to replace petroleum derivatives since it can be produced from various raw materials, such as microalgae.
 
Design/Methodology/Approach: Different vinasse dilutions were studied for the cultivation of Chlorella sorokiniana CTT 7727, being 5, 10 and 15% (v v-1) and N:P:K (20:5:20) 1% (v v-1) medium as a comparative standard. Biodiesel was produced by direct transesterification and analyzed by gas chromatography coupled to a flame ionization detector, enabling the identification and quantification of the fatty acid profile.
 
Findings: The results obtained indicated that vinasse 10% (v v-1) proved to be promising for application as a culture medium for this microalgae species, as it guaranteed a good cell growth rate, high biomass productivity and lipid yield. Considering the biodiesel produced, it fits the regulatory standards analyzed by the National Agency of Petroleum, Natural Gas and Biofuels (ANP).
 
Research, Practical & Social Implications: The research demonstrates the feasibility of cultivating the microalga Chlorella sorokiniana with diluted vinasse, highlighting the 10% concentration as promising for optimizing cell growth and lipid yield. The results ensure compliance with ANP regulations for biodiesel production, indicating immediate and sustainable applicability on an industrial scale. Socially, it contributes to the pursuit of biofuels, reducing dependence on fossil sources and promoting more sustainable practices in the bioenergy industry.
 
Originality/Value:  The study's originality lies in the unique combination of Chlorella sorokiniana CTT 7727, diluted vinasse, and biodiesel production in accordance with ANP regulations. It stands out for identifying the optimal vinasse concentration (10%) for cultivation, presenting an economical and effective approach. The strategic value is in the use of an alternative raw material cultivated with an industrial residue, promoting the diversification of the energy matrix and mitigating environmental impacts associated with conventional fuels.
Exploration of the Curriculum Reform Path in the Period of High-Quality Development of University Educational Psychology
Authors: Gao Chunyang , Li Le , Zhao Xuetong
Published: July 2024

The theoretical and applied characteristics of educational psychology courses in colleges and universities are prominent, and actively promoting curriculum reform is more conducive to promoting the implementation of talent training goals, which is in line with the practical needs of social development for high-quality talents. However, curriculum reform is a systematic project, which involves the innovation of curriculum content systems, teaching methods, teaching evaluations, and so on. This paper mainly expounds on the curriculum reform path in the period of high-quality development of educational psychology in colleges and universities, hoping to play a reference role in improving the level of education management.
Research on the Application of Virtual Simulation Experimental Teaching in the Securities Investment Course
Authors: Zhu Beini
Published: July 2024

With the rapid development of information technology and the increasing complexity of the financial market, the teaching methods and means of the Securities Investment course in universities are facing new challenges and opportunities. The purpose of this paper is to discuss the application and construction path of virtual simulation experimental teaching in the Securities Investment course. Firstly, it analyses the problems existing in the teaching of traditional securities investment courses, such as the disconnection between theory and practice and the single teaching mode. In order to solve these problems, this paper puts forward the necessity of introducing virtual simulation experimental teaching and details the specific application path of virtual simulation experimental teaching in the Securities Investment course.
Study on the Coordination Mechanism Between Higher Vocational Students’ Career Development Planning and School Management
Authors: Li Jian
Published: July 2024

The coordination mechanism between the career development planning of vocational students and the management of vocational colleges is an important means to improve the quality of education and students’ vocational competitiveness. The application of synergy theory in the field of education emphasizes the interaction and coordination of various elements in the system and pursues the optimization of overall efficiency. Based on the theory of coordination and its relevance to the management of higher vocational colleges, this paper analyzes the current development status and problems of the coordination mechanism and puts forward the strategy of building an efficient coordination mechanism designed to enhance the students’ employment competitiveness, promote the all-round development, and provide theoretical and practical support for the reform and development of higher vocational education.
Financial Freedom, Social Capital, and the Development of Rural Women Entrepreneurship in India
Authors: Victor M. , Elangovan N. , Halaswamy D. , Sonia M.
Published: July 2024

Human resource development can only be achieved by promoting female entrepreneurship. There is a very low level of female entrepreneurship in India, especially in rural areas, which has recently been a cause for concern. Women are now aware of their existence, privileges, and employment circumstances.The subject of this research is female entrepreneurs in rural India, their contribution towards society, problems faced by women entrepreneurs in India, and initial steps taken by the administration for their development in India’s rural region. The research is explanatory. The primary data is used in the paper. The self-structured questionnaire was circulated to the women entrepreneurs in rural India. The data collected was analysed using a targeted sampling method in the Statistical Package for Social Sciences programme, followed by a study of the statistical results. During the survey, 44 respondents were interviewed. The results showed that among the most significant challenges were women’s family responsibilities, gender inequality, financial difficulties, low risk inclination and competition between men and women. It was concluded that the challenges faced by women entrepreneurs could be addressed through appropriate incentives, training, encouragement, social recognition of their entrepreneurial capabilities and appropriate family support.