bluuebunny/crossref_metadata_2025 huggingface dataset:
GENDER DISCRIMINATION IN INDONESIAN ONLINE NEWS TEXTS
Authors:   Institut Pendidikan Indonesia, Mutia Devi , Hamdani Agus ,   Institut Pendidikan Indonesia
Published: May 2024

Critical Discourse Analysis (CDA) can serve as a tool and method to examine the relationship between discourse, society, and culture (Fowler, 1997). Therefore, it can be said that CDA uses language to analyze inequalities in various fields such as economics, politics, social issues, culture, and education. According to Theo Van Leuween, the marginalization of certain social groups can be observed based on their presence or absence in a discourse. Some are excluded from the conversation (exclusion), while others are included in the conversation (inclusion) (Eriyanto, 2009). This research employs a descriptive qualitative method with the note-taking technique. The analysis of news using Theo van Leeuwen's approach reveals the use of various strategies in shaping narratives. The news implements inclusion and exclusion, utilizing passivization, nominalization, and objectification-abstraction to guide the reader's understanding. This approach also involves nomination-categorization and nomination-identification, establishing the identities of actors, victims, and families. Keywords: Gender Discrimination, News, Critical Discourse Analysis, Theo Van Leeuwen
Vein Unveiled: An Overview of Varicose Vein
Authors: Khan Mohd Maruf , Begum Mehmooda , Anees Arif , Mishra Akanksha
Published: May 2024

Varicose vein are enlarged, abnormally twisted veins affected by backward flow and turbulence in the blood circulation, damaging the veins,(especially of legs). Due to the incompetent nature of their valves, blood reflux frequently occurs, which can result in invenous hypertension and accompanying symptoms. It is a prevalent and often underestimated vascular condition, which continue to affect millions of people worldwide, impairing both overall health and quality of life. If progressed it results in swelling, painful lower limb, and intense itching. In severe cases, these veins rupture resulting in varicose ulcers. Various risk factors include family history, prolonged standing, older age, pregnancy, obesity. This comprehensive article aims to provide a succinct yet thorough overview of varicose veins covering the epidemiology, pathophysiology, clinical symptoms, current surgical and non- surgical treatments and the study of Unani formulation which may be useful in curing varicose vein.
Interpretation of Zakat Perspectitive of the Hadith Ahkam Fii Al-Muamalah
Authors: Adawiah Amalia Muazzah , Komaruddin Koko , Sar’an Muhamad
Published: May 2024

Zakat is an obligation to all muslims who are capable or have reached an nisab in it’s possession. Zakat was essentially a vertical and horizontal relationship. In a horizontal relationship, zakat’s purpose is not just conserving the poor, but has a more permanent purpose of raising poverty, the purpose in this article to discuss the question of the zakat study, referring to the prophet’s hadiths, As for the approach in this article using a qualitative approach through library study (library research) which is the method for data collection by understanding and studying theories from various literature ranging from books and journals relating to the subject. The result of this article was that zakat was obligatory to religious believers who had a set minimum of property (nishab) and had a one-year period. In addition to consecrate property, zakat was viewed as an obligation to the owner of the treasure to impose the rights of others on the property obtained.
The Prevalence of Sarcopenia in Adults Aged 20 to 59 Attending a Primary Care Clinic at a University Hospital
Authors: Riquelme-Heras Hector
Published: May 2024

Objective: Identify the prevalence of sarcopenia in adults aged 20 to 59 years in the Primary Care clinic at a hospital in Mexico. Methods: An observational, cross-sectional, and descriptive study was carried out, which included 174 participants distributed according to the gender and age groups. Detailed analyses were performed, such as place of residence, schooling level, socioeconomic level, body mass index, and level of sarcopenia. This analysis was based on the diagnostic criteria established by the European Working Group on Sarcopenia in Older People (EWGSOP2). Result: In evaluating 174 participants, a gender distribution was identified with 56 men and 118 women. The majority of participants came from urban environments (172). By dividing these by age group (20 to 30 years, 31 to 40 years, 41 to 50 years, and 51 to 59 years), a total of 81, 32, 32, and 39 participants were obtained, respectively. Regarding body mass index, the study was divided into underweight (4), average weight (60), overweight (58), and obesity (52). In this study, probable sarcopenia was identified in 7 participants, while no cases of confirmatory sarcopenia or severe sarcopenia were found. When analyzing the presence of probably sarcopenia according to the body mass index, it was observed that this condition manifested itself in patients with average weight (4 patients), overweight (2 patients), and obesity (1 patient). Conclusion: The results of this study reveal the absence of sarcopenia in the population between 20 and 59 years of age. Although the findings in this study differ from other studies, it is suggested that longitudinal and specific research aimed at adults in the age range of 20 to 59 years of age be carried out.
Implementasi Maqashid Syariah Dalam Pemberdayaan Ekonomi di Masyarakat dan Kemiskinan Diwilayah Dengan Batubara
Authors: Febrian Syuhada Erwin , Birusman N
Published: May 2024

Kemiskinan merupakan permasalahan sosial yang harus segera diberantas dalam kehidupan masyarakat. Jika tidak ada tindakan serius untuk menghilangkannya, maka akan banyak permasalahan yang timbul akibat kemiskinan, seperti kriminalitas, kriminalitas; bahkan iman orang yang kuat pun bisa menjadi lemah ketika kemiskinan melanda. salah satu upaya untuk mengurangi tingkat kemiskinan yang ada yaitu dengan memberdayakan masyarakat melalui sektor dunia usaha (industri) untuk meningkatkan kesejahteraan ekonomi. Kesejahteraan ekonomi Islam terbagi menjadi 2 yaitu kesejahteraan dunia dan akhirat. Kesejahteraan adalah kesejahteraan material dan spiritual. Kesejahteraan materi diperoleh dengan meningkatkan pendapatan untuk memenuhi kebutuhan hidup, sedangkan kesejahteraan ruhani diperoleh dengan mendekatkan diri kepada Allah SWT dengan menjaga maqashid syariah. Tujuan dan harapan Maqashid Syariah ini dalam meningkatkan perekonomian masyarakat adalah untuk menghasilkan kesejahteraan bagi masyarakat itu sendiri, baik di dunia maupun di akhirat.
Poverty is a social problem that must be immediately eradicated in people's lives. If there is no serious action to eliminate it, there will be many problems that arise due to poverty, such as crime, crime; even a strong person's faith can become weak when poverty strikes. one effort to reduce the level of poverty that exists, namely by empowering the community through the business sector (industry) to improve economic welfare. Islamic economic welfare is divided into 2, namely the welfare of the world and the hereafter. Welfare is material and spiritual welfare. Material welfare is obtained by increasing income to meet life's needs, while spiritual welfare draws closer to Allah SWT by maintaining maqashid sharia. The goal and hope of this Maqashid Syariah in improving the community's economy are to produce prosperity for the community itself, both in this world and in the hereafter.
Grape Leaves and Ziziphus Spina-Christi, Extracts as a Green Inhibitors Corrosion for The Carbon Steel and Oil Pipelines in 1M H2SO4
Authors: AB. Matter Hamdy , M. Ayad Tariq , A.I. Alkatly Abdulrhman
Published: May 2024

Metals suffer from corrosion by the surrounding fluids, which causes great economic losses and bad environmental effects, especially in oil pipelines or reservoirs. The extract of grape leaves (GL) and Sidr leaves, (Ziziphus spina-christi), (Zizi) were used as green corrosion inhibitors (CI) for carbon steel (CS), and Oil Pipelines in 1M H2SO4, these extracts showed varying capabilities in resisting corrosion. Corrosion rate was decreased with increase in inhibitor dose which could be due to enhanced surface coverage, as well as the effect of increasing the temperature on the percentage of the efficiency of inhibition, are decrease, and drawing the curves for that, as well as studying some physical properties related to the process of adsorption of extracts on the surface of (CS), such as the activation energy and entropy of the process of adsorption of the extracts on the surface of (CS), and calculating those values, and the extracts showed an efficiency that exceeded 90% at concentrations up to 400 ppm and a temperature of 313-343K. The activation energy associated with this process indicated surface interaction as the main mechanism and positive values of enthalpy change confirmed the endothermic nature. The potentiometric method showed the extent of voltage change with time for each concentration of extract of grape leaves for immersion time (2–24 h), and that the voltage increases with increasing concentration, which indicates a high ability of the inhibitor to adsorb to the metal..
IMPORTANCE OF FAMILY IN PERSONAL DEVELOPMENT
Authors:   2nd stage student of the Tashkent University of Applied Sciences majoring in ", is the son of Azim Rajab Oljaboyev ,   Pedagogy and Psychology",   , Uzbekistan
Published: May 2024

A view on the formation of a person as a person in society and Concepts are different and different, and they all have a meaning complement each other. Well, who can we call a person and his how important is the importance of the family in finding its place in society in a mature state.
THE SIGNIFICANCE OF FOREIGN INVESTMENTS IN THE GROSS REGIONAL PRODUCT (GRP)
Authors:   Graduate student of Tashkent State University of Economics, Uzbekistan, ogli Bekzod Abdukakhorov Utkir
Published: May 2024

In this article, the GRP of the regions of the country and the importance of foreign investments in it are studied and the economic indicators recorded in the regions of the country are analyzed. In particular, the importance of special economic zones in actively attracting investments to the country has been studied. In the course of the scientific work, the GRP level of 3 regions, Tashkent region, Jizzakh region and Samarkand region, and the dynamics of investments attracted to the region were analyzed. In addition, a general conclusion was formed, proposals and practical recommendations were given for attracting foreign investments to the regions of the country.
Application of Post Stack Acoustic Impedance Inversion to Lateral Rock Property Prediction: A Case Study Eti-field Offshore Niger Delta
Authors: Tiekuro Ede , Emujakporue Godwin Omokenu , Nwankwo Cyril N.
Published: May 2024

This study presents the result of a Model-based seismic inversion technique which was used to invert an acoustic impedance structure within a reservoir interval by intergrating well logs and 3D post stack seismic data obtained from Eti-field offshore Niger Delta. The purpose was to delineate lateral and vertical alternations in subsurface rock properties which is caused by difference in lithofacies within the reservoir interval. This would help to define hydrocarbon fairways better and constrain the range of hydrocarbon zones for field development. The inversion workflow used in this study includes forward modelling of reflection coefficients from a low frequency impedance model driven from well logs and convolution of the reflection coeffiecients with a source wavelet derived from the seismic data. P-impedance inversion analysis at the control well location gave a near perfect correlation of 0.993686 (correlation coefficient of ≈ 99.4 %) between the original P-impedance log, initial guess P-impedance model log and inverted P-impedance log. The estimated error observed was 5533.1 which corresponds to (0.112308) about 11.23 %. Seismic inversion analysis realized an acoustic impedance striucture with P-impedance values ranging from 7000 to about 50000 ft/s*g/cc and having a general increase with depth trend. Impedance slice extracted from the impedance volume at top of the reservoir predicted lateral variations in P-impedance at well control and away from well control. This information can be invaluable in delineating more prospective reservoir zones in the field and thereby enhancing optimum field development which aids in reservoir management decisions.
Economic Analysis of Wind Turbines in Oil and Gas Sector
Authors: Idoko Raphael Igbabe Isawa
Published: May 2024

Diesel generators or gas turbines located in the platforms usually do electricity production in oil and gas platforms. Using the above equipment, taking into account safety issues to prevent explosions and fires, as well as fueling them offshore, will be very expensive. In addition, the mentioned devices emit a significant amount of CO2 and NOx. Therefore, the use of renewable energy instead of fossil fuels can be much more economical and environmentally friendly. This study attempts to investigate the potential of using wind energy in the Persian Gulf and the feasibility and detailed economic analysis of using wind turbines on oil and gas platforms to provide part of the energy required. For this purpose, wind speed data are extracted from measurements at 10 meters, 30 meters and 40 meters above the ground. Average wind speed for the mentioned levels as 4.45 m/s, 4.99 m/s and 5.34 m/s respectively. In addition, it gives the annual power density as 128.36 W/m2, 173.80 W/m2 and 210.42 W/m2. The results obtained by using RETScreen software show that in this project with a life span of 30 years, the economic output of wind turbine systems is profitable, so that after 8.2 years, the entire cost of the project will return.
Survey on Clustering Techniques for Wireless Sensor Networks and Cluster Head Selection Model
Authors: Ahmed Muhammed. K. , Farej Ziyad. K.
Published: May 2024

Low-powered wirelessly connected devices create a system that is self-contained and called Wireless sensor network (WSN), this system has a number of practical applications in the modern world. Nodes in WSN are spread out spatially and have wireless communication with other nodes in the network, these nodes are primarily dedicated to sensing the vicinity and recording the physical properties of the area, including collect observations pertaining to humidity, noise, load, temperature Sensors and other factors at a central station. From there, the end user analyzes the information. After distribution, a cluster is formed between nodes, called a cluster. One of the nodes is selected as the cluster's head, which is used to migrate the data across the network. Clustering is essential in addressing many issues in WSN, particularly in regards to their lifetime, energy savings, and interoperability. Many approaches exist for clustering WSN, the difference between them is in the choice of CH, the number of clusters, the structure of clusters, the policy for data aggregation, the efficiency of communication between clusters, and the choice of communication between internal and external clusters. This article provides a comprehensive comparison of various methods of clustering and their advantages and disadvantages in WSNs. It also describes the principles of CH selection and how it works within each category. This helps the end user to choose the most suitable one protocol for their needs, and also will assist researchers in addressing the problems revealed in the process of clustering WSN.
Soft Computing-Based System for Performance Modeling of Object-Oriented Programming (OOP) Software
Authors: Uwah Anietie , Umoren Imeh
Published: May 2024

Performance is a vital attribute for most software, making performance investigation an essential software engineering task. The problem is that modern applications are challenging to analyse for performance. The advancement of Software engineering has seen the application of scientific approach at various stages of Software Development Life Cycle (SDLC). New technique is available for implementation known as soft computing. This approach is a synergistic combination of artificial intelligence methodologies to model and solve real world problems that are either impossible or challenging to be modeled mathematically. The complexity, the commercial constraints and the expectation for high quality software demand, measuring the quality performance of an Object-Oriented Software (OOS). This work presents a set of testing metric (criteria) which hold the potential for ensuring remarkable improvements in quality performance of Object-Oriented software (OOS). A Prediction Model focused on identifying and evaluating the quality of the performance model based on the data set of software design components. The software design properties are comprehensive elucidated and integrating concepts of fuzzy logic and software engineering. The system enables the performance of modeling of Object-Oriented software using Fuzzy Inference System (FIS) to accurately predict the quality Object Oriented Software based on quality performance criteria such as reliability, efficiency, functionality and maintainability. Empirical validation of the results using checking data set is made to prove the usefulness of the design metrics and design quality attributes on the software prediction models. The purpose of this work is to provide development tool to solves practical problems, and focus on identifying and evaluating the quality performance of software design components. Again, the results demonstrate that, despite the research including approaches explicitly aimed at object-oriented software, there are substantial challenges in providing realistic feedback on the performance of large-scale object-oriented applications accordingly.
Analisis Sistem Tunjangan Profesi: Kunci Kesejahteraan Bagi Guru Pendidikan Agama Islam
Authors:   UIN Sunan Gunung Djati Bandung Indonesia, Kurniasih Siti Rohmah , Hermawan A. Heris
Published: May 2024

This research aims to explain the analysis of the professional allowance system, which includes policies regarding recipient criteria, allowance amounts, and allowance administration procedures for PAI teachers, as well as provide an overview of the welfare performance of PAI teachers before and after receiving professional allowances, so that in the future it is hoped that more and more teachers will PAI understand the professional allowance system so that it has an impact on fulfilling the welfare of PAI teachers. This research uses quantitative methods with a cross-sectional type of survey research. Research data sources consist of primary data sources originating from journal articles, books, and documents that are relevant to the research problem. Meanwhile, secondary data sources come from PAI teachers at the elementary school level in Kec. Dayeuhkolot District, Bandung, with 16 PAI teachers who have received professional allowances. The data collection technique uses a questionnaire or questionnaire distributed via Google Forms, which is analysed using descriptive statistics and presented in the form of narratives, tables, and diagrams. The results of the research show that the PAI teacher professional allowance system is explained in Minister of Religion Regulation Number 43 of 2014 Article 1 and Minister of Religion Regulation Number 43 of 2014 Article 8. Apart from that, the results showed that the welfare of PAI teachers after receiving professional allowances increased by 17.18%. So it can be concluded that professional allowances can be the key to PAI teacher welfare.
Resepsi dan Transmisi Nilai-Nilai Hidup Qurani Berbasis Kearifan Lokal Dalam Syi’ir Nyai Maryam
Authors:   Universitas Islam Negeri Raden Mas Said Surakarta, Indonesia, Asy'ari Jihan Adibah , Kafid Nur ,   Universitas Islam Negeri Raden Mas Said Surakarta, Indonesia
Published: May 2024

This research based on the tradition of reviving the Qur'an through syi'ir. The values of life contained in Nyai Maryam's syi'ir are the substance of the Qur'an doctrine. This syi'ir was created by Nyai Maryam as a medium in teaching the Qur'an. So this research aims to describe the transmission process of Nyai Maryam's syi'ir and find out the reception of the use of Nyai Maryam's syi'ir in religious activities created from Nyai Maryam's interpretation of the Qur'an. This research is a qualitative research with a type of field research that uses the Living Quran approach and triangulation data validity. Data is obtained through data collection techniques such as interviews, observation, and documentation. The primary source of this research is Nyai Maryam's syi'ir contained in the book Maulidul Barzanji Natsron which is supported by secondary sources from several books, journals and previous scientific works. The data analysis technique used in this research is data reduction by choosing and selecting any incoming data from the results of interviews, observations and documentation. The research findings are the teachings contained in the syi'ir regarding adab towards the Qur'an and the values of life that remind readers of the importance of maintaining adab towards the Qur'an. The practice of reciting this syi'ir is still preserved until the current generation in various religious activities.
Extractos Acuosos de Cecropia peltata L. y Trema Micrantha Blumen como una Alternativa para el Control de Tetranichus Urtice Koch
Authors: Velázquez Vázquez Guadalupe , Aragón Sánchez Miguel , Puga Jiménez Ana Laura , Hernández Juárez Efrén
Published: May 2024

El uso indiscriminado de plaguicidas químicos ocasiona diversos impactos no solo en el ambiente si no también en la salud de las personas que los utilizan. Una alternativa útil en el control de plagas pueden ser los extractos vegetales. El objetivo de este estudio fue evaluar el efecto de diferentes concentraciones de los extractos de Cecropia peltata L. y Trema micrantha (L) Blumen sobre la mortalidad de Tetranychus urticae Koch en condiciones de laboratorio. Se estableció en el laboratorio una cría de T. urticae del cual se obtuvieron organismos que fueron sometidos a una dosis del 3, 10, 25 y 75 mL de los extractos vegetales de C. peltata y T. micrantha, así mismo se evaluó una cepa de Bauveria bassiana, Imidacropid como tratamiento positivo y agua como tratamiento negativo. Se observó una mortalidad superior al 60 % de T. urticae en todos los tratamientos tras 24 horas de interacción a una dosificación de 3mL, esta mortalidad incremento conforme la concentración aumento, tras 48 horas la mortalidad aumento al 100% en todos los tratamientos en todas las concentraciones, excepto el extracto de C. peltata a una dosis de 3mL, donde la mortalidad fue inferior al 87%.
INTERVALOS DE COLETAS DE SÊMEN EM REPRODUTORES SUÍNOS NO INÍCIO DA VIDA REPRODUTIVA: AVALIAÇÃO DOS PARÂMETROS SEMINAIS
Authors: Rossi Carlos Augusto , Ditadi Cassiane Turchetto , Ceron Marcos Speroni , Germani Isabela Gularte , Christoff Cauan Kim Romani , Junior Guinter Einloft Scholz , Mello Andrieli Pereira de , Mello Manuela Castilho Matsdolf de , Garcia Jordana , Santos Ana Paula Ramos dos
Published: May 2024

Na produção suína, boas taxas de reprodução podem ser alcançadas através da seleção genética e de biotecnologias reprodutivas. Uma dessas biotecnologias é a inseminação artificial, que contribui para disseminar genes e otimizar a reprodução de machos reprodutores. Este estudo teve como objetivo avaliar os intervalos entre as coletas de sêmen de machos no início da maturidade reprodutiva em relação a viabilidade das doses de inseminação. Vinte machos de 9 meses de idade, da linhagem genética Agroceres PIC, foram selecionados e divididos em quatro grupos de tratamento, nomeados de acordo com o intervalo entre as coletas de sêmen: T1: 2 dias; T2: 3 dias; T3: 4 dias e T4: 7 dias. Foram avaliados os valores de motilidade total, volume e concentração espermática dos ejaculados, e o estresse oxidativo por meio de substâncias reativas ao ácido tiobarbitúrico (TBARS). As concentrações espermáticas diferiram, com T3 apresentando concentrações maiores que os grupos T2 e T1, respectivamente. No teste de resistência ao calor T2 e T4 não diferiram em termos de motilidade total, mas a de T4 foi 4,96% maior que T3 e 7,71% maior que T1. Quanto à integridade da membrana plasmática e morfologia espermática, T4 apresentou mais células com membranas intactas que T1, T2 e T3, respectivamente. Com relação ao TBARS, os animais de T1 apresentaram maiores alterações. Por fim, à motilidade total foi maior quando coletados em intervalos de 7 dias. Portanto, os animais podem ser submetidos a um intervalo entre coletas de 3 e 4 dias, sem comprometer as células espermáticas.
O METABOLISMO DO NITROGÊNIO NOS RUMINANTES E AS IMPLICAÇÕES DO EXCESSO DE NITROGÊNIO DIETÉTICO NA PECUÁRIA A PASTO
Authors: Ramalho I.O. , Souza W.S. , Homem B.G.C. , Soares S.C. , Borré J.G. , Ramos J.V.B , Melo J.B.A. , Salgado L.S.
Published: May 2024

O manejo adequado do nitrogênio (N) dietético em ruminantes é crucial para o crescimento e desenvolvimento animal. O objetivo desse capítulo é discutir o metabolismo do N e como o excesso de N na dieta pode ser prejudicial à saúde animal e ao meio ambiente. O N excedente é excretado na urina, podendo causar problemas como timpanismo e distúrbios metabólicos nos animais. No solo, o N em excesso pode levar à lixiviação, volatilização de amônia e emissão de óxido nitroso (N2O), um potente gás de efeito estufa (GEE). O uso de leguminosas forrageiras tropicais é uma estratégia para reduzir o impacto ambiental da pecuária. As leguminosas podem melhorar a qualidade da dieta e aumentar a eficiência do uso do N pelos bovinos.
ANATOMIA E MANEJO REPRODUTIVO EM CODORNAS
Authors: Barbosa N.P.M.O. , Oliveira N.J.F. , Silva F.G. , Ferreira F. , Crocomo L.F.
Published: May 2024

As aves domésticas compartilham morfologia semelhante em relação aos aparelhos genitais, destacando-se diferenças nos hábitos reprodutivos e comportamentais. O sistema reprodutivo feminino é composto por ovário, oviduto e cloaca, sendo o oviduto dividido em: infundíbulo, responsável pela produção do material proteico; magno, pela adição da maior parte do albume; istmo, pela formação das membranas do ovo; útero, pela formação da casca, e vagina, pela passagem do ovo durante a postura e dos espermatozoides durante a cópula. A junção útero-vaginal contém glândulas responsáveis pelo armazenamento dos espermatozoides. O aparelho reprodutor masculino inclui testículos, epidídimos, ductos deferentes e falo. Os testículos são assimétricos, com o esquerdo geralmente maior, e a espermatogênese ocorrendo nos túbulos seminíferos. O falo, presente na cloaca, varia em anatomia de acordo com a espécie. O manejo reprodutivo é essencial para a otimização da produção de ovos férteis, utilizando-se de fatores como: iluminação, controle de idade e peso corporal, atentando à consanguinidade a fim de evitar perdas genéticas.
Combined Impact of PolypropyleneFibers and Silica Fume on M30 Concrete Grade
Authors: Krishna P.V. Hari , Lokesh Kumar Nanganam , Sudheer Alladi , Hruthik Kumar Marrikunta , Venkata Sudev Karamsetty
Published: May 2024

This research project investigates the combined influence of silica fume and polypropylene fibers on the mechanical properties of M30 grade concrete. Silica fume, known for its ability to enhance concretestrength and durability, is introduced at varying percentages (0%, 10%, and 20%), while polypropylene fibers, chosen for preventing cracks and improving strength, are added at different levels (0%, 0.5%, and 1%). The project employs systematic experimentation, testing concrete mixes with different proportions of silica fume and polypropylene fibers at various curing periods for 7 days and 28 days to assess their impact on mechanical properties. The research seeks to identify the most effective mix design for achieving desired strength outcomes in M30 grade concrete. Silica fume is recognized for its ability to enhance concrete impermeability and strength, while polypropylene fibers offer benefits such as controlling shrinkage cracking and improving impact resistance. This research contributes to advancing construction materials by optimizing the utilization of silica fume and polypropylene fibers in concrete mixes. The findings aim to provide valuable insights for industry professionals seeking to improve the quality and performance of high-grade concrete structures. The search results indicate that the inclusion of silica fume helps the dispersion of fibers and increases the specimens' strength more than the addition of silica fume alone. Polypropylene fibers are also added to improve mechanical qualities.
An Efficient Replacement for Schrödinger's Partial Differential Equation
Authors: Abbas Ismail
Published: May 2024

The classical finite difference method for solving time-dependent partial differential equations has become quite tedious and requires the use of off-the-shelf algorithms such as those in MATLAB. The treatment by finite difference method then solution of the n resulting first order algebraic equations is quite difficult since the underlying matrix is singular. We propose an alternative revolutionary statistical technique using Bmatrix chains, which are a product of the Cairo techniques. This technique is valid for both classical macroscopic physics such as the heat diffusion equation and modern microscopic quantum mechanics such as Schrödinger's PDE. He completely neglects partial differential equations as if they never existed. The numerical results of the proposed numerical statistical method show stability, accuracy and superiority over conventional PDE methods.
Examination of Ulcero-Proliferative Lesions of Oropharynx and Oral Cavity- A Clinical Perspective
Authors: Sravya Gottam , Mounica Matta
Published: May 2024

 Introduction Patients often present with ulcero-proliferative lesions of the oropharynx and oral cavity in the outpatient department (OPD). These lesions have a negative impact on the patients' health, so it's critical to make an accurate diagnosis and administer the right care.  Aim of the Study: To determine the proportion of patients who exhibit different ulcero-proliferative lesions clinical characteristics in the oropharynx and oral cavity.  Patients and Methodology: This is prospective study done at Department of ENT, Guntur Medical College, spanning a period of 18 months. This study included patients with ulcero- membranous lesions in the oropharynx and oral cavity, regardless of age. This study excluded Patients who had radiation therapy soon before developing the illness and who had traumatic injuries but no infection. Detailed history including personal, family and medical history were noted. Local and general examination was done. Selected patients were subjected to investigations like routine blood investigations, gram stain, albert’s stain, KOH mount, culture and sensitivity, peripheral smear, serology, FNAC, HPE, USG, chest x ray, CT neck, MRI.  Results In the current study, men dominated women (65.69%) and the most prevalent age group participating was 41–60 years old (45.09%). The most typical symptoms of the throat were odynophagia, burning sensation, dysphagia, and throat pain. 5.9% of the patients had nose issues and 14.7% had associated ear complaints. General symptoms included fever in 10.7% of cases, weight loss in 23.5%, general weakness in 15.6% of cases, and skin lesions in 6.9% of cases. Systemic disorders such as HIV was present in 3.9%, hypertension in 25.4%, and diabetes in 34.3% of cases. Risk factors include chewing tobacco (17.6%), drinking alcohol (14.7%), smoking (43.1%), and having previously been exposed to radiation (0.9%). The tongue was the most frequently afflicted site in this study (44.1%), followed by the palate (29.4%), the buccal mucosa (15.6%), the tonsils (8.8%), the lips (7.8%), the alveolus (2.9%), and the RMT (1.9%). Neoplastic etiology accounted for 41.1% of the total etiology discovered. It was followed by inflammatory (31.3%), infectious (20.5%), and miscellaneous (6.8%) etiologies. 52.9% of patients had conservative care, 36.2% had oncosurgery team treatment through surgery, and 10.7% had radiation therapy. Of the patients with neoplastic etiology, 10.7% had radiation therapy.  Conclusion: The incidence of cancers rises in the adult population with increased habits like smoking and chewing nicotine in any form. A high degree of suspicion is required when treating oral ulcers, particularly those that are chronic. The gold standard for confirming the diagnosis is always a biopsy and a histopathological examination.
Altered regional brain activity and functional connectivity in primary intravaginal anejaculation patients revealed by resting-state fMRI
Authors: Gao Qing-Qiang , Chen Jian-Huai , Lu Jia-Ming , Wang Bin , Han You-Feng , Gao Song-Zhan , Yang Jie , Dai Yu-Tian
Published: May 2024

Ejaculation is regulated by the central nervous system. However, the central pathophysiology of primary intravaginal anejaculation (PIAJ) is unclear. The present study aimed to examine the changes in regional brain activity and functional connectivity underlying PIAJ. A total of 20 PIAJ patients and 16 healthy controls (HCs) were enrolled from September 2020 to September 2022 in the Department of Andrology, Nanjing Drum Tower Hospital (Nanjing, China). Magnetic resonance imaging data were acquired from all participants and then were preprocessed. The measures of fractional amplitude of low-frequency fluctuation (fALFF), regional homogeneity (ReHo), and functional connectivity (FC) were calculated and compared between the groups. PIAJ patients showed increased fALFF values in the left precuneus compared with HCs. Additionally, PIAJ patients showed increased ReHo values in the left precuneus, left postcentral gyrus, left superior occipital gyrus, left calcarine fissure, right precuneus, and right middle temporal gyrus, and decreased ReHo values in the left inferior parietal gyrus, compared with HCs. Finally, brain regions with altered fALFF and ReHo values in PIAJ patients showed increased FC with widespread cortical regions, which included the frontal, parietal, temporal, and occipital regions, compared with HCs. In conclusion, increased regional brain activity in the parietal, temporal, and occipital regions, and increased FC between these brain regions, may be associated with PIAJ occurrence.
Estimates for the Kolmogorov widths of an intersection of two balls in a mixed norm
Authors: Vasil'eva Anastasia Andreevna
Published: May 2024

Order estimates are obtained for the Kolmogorov widths of intersections of two finite-dimensional balls in the mixed norm under certain conditions on parameters.
Bibliography: 27 titles.
Existence of solutions of a nonlinear eigenvalue problem and their properties
Authors: Valovik Dmitry Viktorovich , Tikhov Stanislav Vyacheslavovich
Published: May 2024

An eigenvalue problem is considered for a nonlinear nonautonomous ordinary differential equation of the second order on a closed interval with conditions of the first type and an additional (local) condition. The nonlinearity in the equation is due to a monotonically increasing nonnegative function with powerlike growth at infinity. The existence of infinite numbers of negative and positive eigenvalues is shown. Asymptotic formulae for the eigenvalues and the maxima of eigenfunctions are found, and comparison theorems are established.
Bibliography: 20 titles.
Diffuse orthogonally additive operators
Authors: Abasov Nariman Magamedovich , Dzhusoeva Nonna Anatolevna , Pliev Marat Amurkhanovich
Published: May 2024

A regular orthogonally additive operator is a diffuse operator if it is disjoint from all operators in the band generated by the disjointness preserving operators. We present a criterion for principal lateral projections in an order complete vector lattice $E$ to be disjoint. We also state a criterion for a regular orthogonally additive operator to be diffuse. A criterion for the regularity of an integral Urysohn operator acting on ideal spaces of measurable functions is also presented. This criterion is used to show that an integral operator is diffuse. Examples of vector lattices are considered in which the sets of diffuse operators consist only of the zero element. The general form of an order projection operator onto the band generated by the disjointness preserving operators is found.
Bibliography: 47 titles.
Combustion Analysis of Active Pre-Chamber Design for Ultra-Lean
Engine Operation
Authors: Peethambaram Mohan Raj , Zhou Quanbao , Waters Benjamin , Pendlebury Ken , Fu Huiyu , Haines Andrew , Hale David , Hu Tiegang , Zhang Jiaxiang , Wu Xuesong , Zhang Xiaoyu
Published: May 2024

In this article, the effects of mixture dilution using EGR or excessive air on
adiabatic flame temperature, laminar flame speed, and minimum ignition energy
are studied to illustrate the fundamental benefits of lean combustion. An
ignition system developing a new active pre-chamber (APC) design was assessed,
aimed at improving the indicated thermal efficiency (ITE) of a 1.5 L
four-cylinder gasoline direct injection (GDI) engine. The engine combustion
process was simulated with the SAGE detailed chemistry model within the CONVERGE
CFD tool, assuming the primary reference fuel (PRF) to be a volumetric mixture
of 93% iso-octane and 7% n-heptane. The effects of design parameters, such as
APC volume, nozzle diameter, and nozzle orientations, on ITE were studied. It
was found that the ignition jet velocity from the pre-chamber to the main
chamber had a significant impact on the boundary heat losses and combustion
phasing. The simulation showed that, under 16.46 compression ratio (CR) and 8.93
bar indicated mean effective pressure (IMEP) condition, it is possible to
achieve the peak ITE of 49.85% with λ = 2.23.
Optimized Emission Analysis in Hydrogen Internal Combustion Engines:
Fourier Transform Infrared Spectroscopy Innovations and Exhaust Humidity
Analysis
Authors: Armbruster Felina , Kraus Christoph , Prager Maximilian , Härtl Martin , Jaensch Malte
Published: May 2024

In today’s landscape, environmental protection and nature conservation have
become paramount across industries, spurring the ever-increasing aspect of
decarbonization. Regulatory measures in transportation have shifted focus away
from combustion engines, making way for electric mobility, particularly in
smaller engines. However, larger applications like ships and stationary power
generation face limitations, not enabling an analogous shift to electrification.
Instead, the emphasis shifted to zero-carbon fuel alternatives such as hydrogen
and ammonia. In addition to minimal carbon-containing emissions due to
incineration of lubricating oil, hydrogen combustion with air results in
nitrogen oxide emissions, still necessitating quantification for engine
operation compliance with legal regulations. A commonly used multicomponent
exhaust gas analyzer on FTIR principle can suffer from higher volumetric water
shares in the exhaust gas of the hydrogen engine, influencing the emission
analysis. This concern prompted the development of a new evaluation approach for
hydrogen operation, analyzing unique wavelength bands for hydrogen operation
while considering the higher volumetric water shares in the exhaust gas of a
hydrogen engine and its missing carbonaceous emissions. The method’s capability
of providing more credible results for hydrogen-powered engines is demonstrated
by assessing the newly introduced hydrogen method through variations of the
indicated mean effective pressure, the air–fuel equivalence ratio, and the
intake air humidity. Presuming minimal CO2 emissions, the method
allows a more realistic allocation of absorption spectra to other emissions. In
addition to investigations on the new hydrogen evaluation method, a model for
calculating the volumetric water share in the hydrogen engine’s exhaust gas is
presented. By comparing the theoretical to the measured water share, the
hydrogen emissions of the engine can be calculated without the need for
additional hydrogen slip measurement.
Controls of normal diagenesis on poroperm parameters in red beds: examples in Miocene Muddy Creek Formation, Mesquite basin, USA and upper Devonian Old Red Sandstone, Orcadian basin, Scotland
Authors: Pham Tuan Van , Parnell John , Hartley Adrian ,   Hanoi University of Mining and Geology, Hanoi, Vietnam  University of Aberdeen, Aberdeen, UK
Published: May 2024

General diagenetic patterns in Miocene Muddy Creek Formation and upper Devonian Old Red Sandstone (ORS) can be characterized as follows: i) early diagenesis characterized by the formation of early hematite, carbonate, and clay cement; ii) burial diagenesis followed by the formation of quartz and feldspar overgrowths, poikilotopic calcite and pore-filling clays; iii) late diagenesis characterized by the formation of late hematite replacing previous poikilotopic carbonate cement. Normal diagenesis has a significant impact on poroperm parameters as indicated by the destruction of pore spaces from cementation and intergranular pressure solution. Early cementation in unburied sandstones of the Muddy Creek Formation reduces sample porosities to 2÷20% of the total rock volume. Cementation destroyed the original porosity of studied sandstones through pore occlusion due to the formation of equant and meniscus calcite cement. Point-count data indicate that the intergranular cement of studied samples ranges between 22 and 44%; in contrast, the intergranular porosities range from 2÷20% of the total rock volume. These consequently indicate that the intergranular volumes that are considered to represent the original porosities of studied samples, ranged from 35÷50% of the total rock volume. Completely pore-occluding poikilotopic calcite cement in the upper Old Red Sandstone reduces poroperm values to as low as 5% porosity and 0.003 mD permeability. Late reddening is caused by replacive hematite cement in the calcite. In addition, normal diagenesis also has an impact on porosity enhancement due to dissolution in the studied red beds. This improves porosity and permeability by as much as 14% and 254 mD in the upper ORS.
Solutions to improve the removal efficiency of salt deposition in the production tubing and surface equipment system at Blocks 433&416B, Algeria
Authors: Do Khoan Duy , Nguyen Thinh Van ,   PetroVietnam Exploration Production Corporation, Hanoi, Vietnam  Hanoi University of Mining and Geology, Hanoi, Vietnam
Published: May 2024

The salt deposition and existence in the production system cause the lower size of the flowing system as tubing, fluctuated or unstable production problems, high wellhead pressure, and flowline pressure, plug the choke valve, wellhead, and flowline pipeline. It negatively affects production. Bir Seba Structure (BRS) field production has high salinity content in oil, due to pressure and temperature change through the production system the salt scaling is deposited to be solid salt. Salt deposition during production damages the surface equipment such as the choke valve, clogging the flowline to the central processing facility (CPF). It causes fluctuated problems in flow rate and pressure in the wells, even blocking the tubing and oil couldn’t flow to the surface. Reducing production and undertaking well shut-ins to remove salt deposits and repair equipment are factors contributing to decreased production. Therefore, finding urgent solutions to address salt deposition is crucial. Various methods have been employed to enhance production efficiency, such as the installation of water dilution pumps at the surface, and injecting water and chemicals for salt removal in tubing (e.g., bull heading, coil tubing). The present article focuses on the occurrence of salt deposition issues during production in Bir Seba Field, Blocks 433a & 416b, Algeria. The geological study conducted indicates that the deposition in the Hamra Quazite reservoir originates from a marine environment. The structural cross-section analysis reveals that the sealing salt Trriasis S4 zone acts as the reservoir's sealing zone for the HQ reservoir. Despite a minimal water cut content during production (less than 2%), continuous salt deposition occurs due to changes in reservoir pressure and temperature, high salinity content in oil production, and the presence of small amounts of water vapor from the reservoir. As a result, solid salt particles are transported with the oil to the surface.
Application of artificial neural network and seismic attributes to predict the distribution of Late Oligocene sandstones in the Cuu Long basin
Authors: Nguyen Muoi Duy , Nguyen Hoa Minh , Bui Ngan Thi ,   Hanoi University of Mining and Geology, Hanoi, Vietnam
Published: May 2024

Artificial neural network (ANN) has been widely applied in oil and gas exploration and production. This study presents the results of predicting the distribution of Late Oligocene sandstones in the Cuu Long basin based on the application of ANN and seismic attributes. These results have great significance, helping to orient the oil and gas prospection and exploration of the Cuu Long basin and other exploration objects on the continental shelf of Vietnam. The authors used unsupervised neural networks (UNN) and UNN methods constantly associated with the principal component analysis (PCA) to divide seismic facies. Seismic attributes such as Root mean square (RMS), Frequency, Envelope, Relative Acoustic Impedance (RAI), Phase, Sweetness, Amplitude, and t-Attenuation were analyzed and selected as input for the ANN training and testing process. These attributes can reflect changes in lithology, and sedimentary facies, from which will have a better view of the distribution of reservoirs in the study area. From 4 to 10 classes of seismic facies have been tested using each method to improve the results. Comparing the results of seismic facies classification by the UNN method and by UNN combined with PCA, it can be seen that the UNN combined with PCA will help reduce noise in seismic data better than UNN only. The research results have identified the distribution of Late Oligocene potential sandstones in the study area in the Cuu Long basin, which are mainly concentrated on the slopes of a large lake, with the direction of sediment transport from the West and Northwest.
Some applications of Scanning Electron Microscopy to the study of reservoir rock
Authors: . Luc The Trinh , Pham Tuan Van , . Bui Hoang Bac , Bui Ngan Thi , Nguyen Hong Minh Thi , Nguyen Muoi Duy , Nguyen Hang Thu Thi ,   Hanoi University of Mining and Geology, Hanoi, Vietnam  HiTech-CEAE Research Team, Hanoi University of Mining and Geology, Hanoi, Vietnam
Published: May 2024

Scanning electron microscopy (SEM) is a powerful tool for visualising reservoir pore and grain framework systems which (SEM) provides qualitative information about pore geometry through direct observation of a rock or a pore cast of the rock. This aids in understanding reservoir productivity capabilities. The SEM is useful for locating and identifying minerals, particularly clay minerals - an aid when designing drilling and completion programs. SEM unlike conventional light microscopy, produces images by recording various signals resulting from interactions of an electron beam with the sample as it is scanned in a raster pattern across the sample surface. Combined with a backscatter detector (BSE), energy dispersal X-ray spectroscopy (EDS), and EDS - Mapping, SEM can yield multiple types of information about geological samples at the same time, such as superficial microstructure, BSE image, component analysis, and crystal structure features. In addition, new technic of SEM like Qemscan and FIB (Focused ion beam) can automatically minerals mapping and approach to 3-D imaging. In this paper, we use granite rock from a granitic basement reservoir, Bach Ho Oilfield as examples to discuss the geological application of SEM. The most important reservoir properties of granite rock in the oilfield are porosity and fractured pores which are abundant. The fractures have various sizes from mm to micron in width. Some large cracks have 1÷3 cm in lenght and 100÷600 µm in width. The small ones have 0.001÷0.2 mm in length and 10÷100 µm in width. Some large fractures were porefilled by crystals that have blade shape.