bluuebunny/crossref_metadata_2025 huggingface dataset:
Molecular Simulation Analysis of Methane Adsorption Micromechanisms and the Impact of Water Saturation on Methane Adsorption in Transitional Shale
Authors: Xu Kun , Chen Shijia , Lu Jungang , Li Yong , Yin Xiangdong , Wu Xueting , Li Chen
Published: July 2022

Adsorption of gas is one of the ways that shale gas exists in the transitional shale (TS). The adsorption mechanism and the impact of water saturation on methane adsorption affect the estimated accuracy of the gas in place (GIP). This work constructs a TS molecular model comprising type III kerogen, kaolinite, illite, and quartz by using the molecular simulation (MS) according to the physical properties of the TS components. This is verified by the gas adsorption experiments of the TS and its components. The study establishes the methane adsorption model on the TS surface, the impact of the TS with varying water saturation on methane adsorption, and microscopic mechanisms of the TS methane adsorption. The experimental and simulated results show that it is feasible to construct a TS molecular model based on TS’s realistic porosity and density. Methane molecules in different mineral components of the TS are not characterized by monomolecular layer adsorption, mainly including micropore filling, transitional phase adsorption, and monomolecular layer adsorption. The transitional phase layer includes the strong adsorption layer (SAL), adsorption layer trough (ALT), and weak adsorption layer (WAL). Micropore filling and transitional phase adsorption coexist in the kerogen of the TS, and transitional phase adsorption primarily occurs in the illite of the TS. Kaolinite and quartz of the TS are featured with monomolecular layer adsorption. Moreover, quartz does not increase the pore space under high pressure because of stable silicon-oxygen chemical bonds. The chemical bonds in the kerogen and clay of the TS are relatively plastic, yielding the larger pore space under high pressure. Moreover, when water saturation exceeds 30% in the TS, water molecules cover the TS pore surface, affording the minimal methane adsorption capacity (MAC). In short, the micromechanisms of methane adsorption are determined by the TOC, adsorption model, water saturation, pressure, and isosteric heat of the TS components. The TS model can improve the accuracy of methane adsorption simulation and better understand the micromechanisms of methane adsorption. The establishment of the TS model and the impact of water saturation on methane adsorption also improves the estimated accuracy of the GIP.
O uso das tecnologias de informação e comunicação (TICs) para o ensino de estatística na educação básica
Authors: De Souza Dirlei Salete , Fracaro Adonis Rogério , Trainotti Andressa
Published: July 2022

Esta pesquisa buscou evidenciar, bem como observar, o uso das Tecnologias de Informação e Comunicação (TICs) no processo de ensino de Matemática do Ensino Básico, com ênfase no ensino de Estatística. O objetivo principal desta pesquisa foi analisar os desafios e as possibilidades de ensinar Estatística no Ensino Básico em escolas do município da Região da AMAUC (Associação dos Municípios do Alto Uruguai Catarinense) fazendo uso de tecnologias digitais e observando como se dá a formação dos professores para o uso dessas ferramentas de ensino. A proposta metodológica é de cunho qualitativo, na qual buscou-se resultados por meio de uma pesquisa investigativa a partir de questionários aplicados para professores de matemática do Ensino Básico. Foram entrevistados 10 (dez) professores de escolas públicas da Região da AMAUC, através da ferramenta de questionário online da plataforma Google Forms. Entende-se que o uso das TICS em sala de aula permite uma aprendizagem mais prática, lúdica e dinâmica, despertando interesse nos alunos em aprender a metodologia e o conteúdo proposto, auxiliando no raciocínio lógico e contribuindo como forma de incentivo ao uso de tecnologias.
Dificuldade de ensino e aprendizagem na matemática: os jogos como alternativa para o entendimento do aluno que apresenta o transtorno da discalculia
Authors: Maria de Oliveira Elisabele , Duarte de Souza Lindomar
Published: July 2022

A discalculia é um transtorno específico de aprendizagem (TEA), o qual afeta a capacidade de se compreender as operações matemáticas, e acomete muitos alunos em fase de aprendizado. Por muito tempo a discalculia foi tratada apenas como uma dificuldade ou como pouca dedicação do aluno nos estudos, porém, já se sabe que tem origem biológica e seu diagnóstico ocorre a partir de avaliações e testes específicos de equipe multidisciplinar, composta de pediatra, neuropsicóloga, psicopedagogo, psiquiatra e fonoaudiólogo. Dentre as dificuldades apresentadas pelos indivíduos que são acometidos pela discalculia, as mais frequentes são: troca de sinais em operações e símbolos matemáticos invertidos; dificuldades na ordem numérica; dificuldade de transformar o abstrato em concreto; montagem errada de operações; dificuldade de seguir muitas etapas em uma determinada resolução; e não compreender com clareza problemas apenas falados. Estas percepções são observadas pelo professor, que poderá permitir que o aluno acesse materiais de apoio específicos para as aulas de matemática, bem como, avaliações adaptadas e o uso de jogos para estabelecer normas e critérios úteis na matemática. O presente trabalho pretende estudar as características sobre a discalculia, contribuir para a identificação de alunos com este transtorno e apresentar jogos que auxiliem o professor na relação ensino e aprendizagem da matemática. Para tanto, foi utilizada uma abordagem qualitativa de caráter bibliográfico, de natureza básica e com objetivo exploratório, de modo a permitir o entendimento sobre o tema abordado.
Apresentação
Authors: Predebon Titon Flaviane
Published: July 2022

Apresentação do volume 3, número 4 do ano de 2022
Natural parks, balneological resources аnd rural development
Authors:   Institute of Natural Resources, Ecology and Cryology, GLAZYRINA Irina , POMAZKOVA Nadezhda ,   Institute of Natural Resources, Ecology and Cryology, DARMAEVA Oxana ,   Institute of Natural Resources, Ecology and Cryology
Published: July 2022

Introduction. One of the priority directions in the field of environmental protection is the construction of models for the development of the territory designed to combine the interests of nature conservation and sustainable development of territories, including the development of environmentally friendly industries and the dissemination of experience in sustainable environmental management practices. The availability of balneological resources enhances the attractiveness of the territories and can be an additional source of income for the local population. One of the ways to solve these problems is to include them in specially protected natural areas, and this strategy often brings good results and contributes to the "green" growth of the local economy. This is evidenced by numerous examples in Western Europe and North America and, to some extent, this is also the case in Russia. However, experience shows that this does not always meet expectations, and it is not enough to give the territory the status of a park. The purpose of the research. Using the example of the Arey Park in the Trans-Baikal Territory, to identify the reasons for the failures of attempts to use the European experience of natural parks in the eastern regions of Russia as factors for the development of a "green" economy in rural areas. We are considering the experience of creating a nature park in 2013 in order to protect the ecosystem and use the valuable balneological resources of Lake Ares in accordance with the goals of the "green" economy. Research results. The paper shows that, despite some improvements in the state of the coastal ecosystem, the status of specially protected natural areas (protected areas) does not contribute to achieving the originally set goals. Its balneological resources, including therapeutic mud, are used uncontrollably in the shadow sector, which does not guarantee either effective treatment or environmentally safe withdrawal. Similar problems arise for other forms of recreational services when organizing campsites, arranging hotels and food outlets. Therefore, the park practically does not realize its potential either as a driver of the growth of the local economy or for the effective use of balneological. The authors analyze the causes of the processes taking place and also propose a number of measures to involve the natural resources of parks in the local economy in such a way that their use brings economic benefits to the local population, while maintaining high environmental quality.
On the determination of buildings technological deformations in geotechnical construction
Authors:   National University of Science and Technology “MISIS”, KULIKOVA Elena , KONYUKHOV Dmitry ,   National University of Science and Technology “MISIS”
Published: July 2022

Objective. The purpose of this work was to determine technological deformations and identify their causes during mining and construction work. Introduction. The modern world is characterized by the expansion of the scale of underground construction, which has a large arsenal of advanced technologies, tunneling equipment, etc. In urban conditions, underground construction is carried-out in the zone of influence of existing land development. At the same time, due attention is not paid to the technological deformations of the existing development. Methodology. Analysis of the results of experimental and practical geotechnical monitoring shows that any technologies of underground construction in conditions of dense urban development cause “technological deformations” of existing buildings, significantly (40-90%) affecting the safety of buildings in the process of new construction. They depend on the mining and hydrogeological conditions of the construction site, the quality of work, the type of enclosing structures of the pit and equipment used. Concomitant reasons are parameters such as the length of the gripper during construction by the trench “wall in the ground” method, the density of bentonite suspension, the distance between the trench and the foundation of the building, the load on the base of the foundation. In the medium technological sediment with the open method of work is estimated at about 60% of the total fixed value. Results. Technological deformations depend on three groups of factors: external, design and technological. External factors include engineering-geological and hydrogeological conditions of the construction site, as well as the stressstrain state of the soil massif. Design factors cover the space planning and design parameters of the constructed structure, which have an impact on the technology of work. Discussion. Technological factors determined by the characteristics and technological features of the equipment used, technological parameters of work production and quality control of their performance. In this regard, in order to provide feedback between the quality control of geotechnical construction and the safety of the surrounding development, it seems appropriate to understand under the term “technological deformations” deformations of the foundations, foundations and structures of buildings from technological influences in the construction process. Conclusion. In the presented work, the factors and parameters affecting the magnitude and scale of technological precipitation are highlighted. On this basis, proposals have been formulated for the elaboration of the concept of “technological sediment” in order to effectively control the quality and ensure the safety of the underground works carried out.
On assessment and management of hydrological risks during spring flood in the River Arpa Basin (Republic of Armenia)
Authors:   Yerevan State University, MARGARYAN Varduhi , GAIDUKOVA Ekaterina ,   Institute of Hydrology and Oceanology, Department of Engineering Hydrology, Vinokurov Igor ,   Institute of Hydrology and Oceanology, Department of Engineering Hydrology, RESHIN Nikolay ,   Institute of Hydrology and Oceanology, Department of Engineering Hydrology
Published: July 2022

Introduction. Issues of formation of maximum expenses and their forecast, risk extreme flow rates on the rivers of Armenia represents a significant interest for consumers of water resources. The works of scientists of the Republic of Armenia are devoted to the solution of this problem: (Vardanyan T. G., Muradyan Z. Z., 2014), forecasting the maximum water flow for the Jermuk hydrological station on the Arpa River (Misakyan A. E., Azizyan L. V., Azizyan A. O., 2014), assessment of long-term fluctuations of the maximum runoff of rivers in the mountainous territories of Armenia in the context of global changes climate (Margaryan V. G., Ovcharuk V. A., Goptsy M. V. Borovskaya G. A., 2020). This paper analyzes the risks of extreme spring runoff river flood Arpa (Republic of Armenia) related to degree assessment the danger of flood waves. Problem solving can help prevent economic damage and loss of life, and raise issue of extreme runoff risk management. Unlike listed works, this study uses longer series of actual observations and a certain section of the river. Purpose of research. Assessment and management of hydrological risks during the period spring flood in the river basin Arpa. Methods. The work used the methods: of mathematical-statistical, extrapolation, analysis, analogy, correlation. Results. Correlations between the values of the modulus of extreme costs 1 and 10 % security and weighted average height drainage basin, as well as the relatively close relationship between the average values of extreme costs for the periods 2001–2020 and 1981–2000 biennium, integral curve of extreme flow rates of floods in the section Yeghegnadzor of the Arpa River. These dependencies can be used to preliminary estimates of the maximum runoff of the spring flood unexplored rivers of the considered territory. To manage and planning of extreme water resources, multifactorial dependencies that can be applied when making forecasts. The rate of extreme flow rates of the spring flood has been calculated, coefficients of variability (Cv) and skewness (Cs), absolute maximum costs of various security. Conclusion. Average values of extreme water flow rates of the river. Arpa for the period 2001–2020 mostly inferior or slightly higher than average values for the period 1981–2000. In the Arpa river basin from 1981 to 2020 year mainly there is a tendency of decreasing extreme river flow, that is, the degree of risk of extreme expenses.
Physico-chemical analysis of the soil cover of technogenically disturbed territories of Kuzbass
Authors:   Kemerovo State University, OSINTSEVA Maria , MILENTYEVA Irina ,   Kemerovo State University, GOLUBTSOVA Yulia ,   Kemerovo State University
Published: July 2022

As a result of coal mining, the natural landscapes of the Kemerovo region are involved in the process of global technogenic transformation. As a result of open-pit coal mining, catastrophic changes occur in ecosystems, which are accompanied by the destruction of the litho logical basis, degradation, transformation and displacement of huge tracts of soil cover. The aim is to study agro physical, agrochemical, sanitary and epidemiological indicators of soil samples of technogenically disturbed territories of Kuzbass. Objects of research. Samples of the surface layer of the external rock dump of LLC "Korchakolsky Section" the dump rock and the surface layer of the nearby territory, of the forest belt of the processing plant of LLC "JV "Barzassky Partnership" and the Taldinsky coal mine. The samples of undisturbed lands selected near the museum-reserve "Tomskaya Pisanitsa" were used as a reference. Methods. Agro physical (hygroscopic humidity, wilting humidity, soil density, soil porosity) and agrochemical (water and salt pH, total alkalinity, hydrolytic acidity, sum of exchange bases, dry residue, content of Cl–, SO₄2–, HCO3–, NO3–, Ca2+,Mg2+, Al) analysis of selected soil samples, including the content of pollutants of anthropogenic origin. The sanitary and epidemiological indicators of the samples were studied. Methods of chemical and instrumental analysis (electrochemical, chromatographic, molecular absorption spectroscopy) were used for research. Results. The analysis of the degree of technogenic disturbance of the studied landscapes is carried out. Samples of LLC JV "Barzassky Partnership" can be attributed to sandy loam soils of a slightly alkaline type. The nickel content exceeded the MPC by 1.26 times; the BGCP index by 25.25 times. Samples of the Korchakolsky section are attributed to sandy soils of a slightly alkaline type. The content of mobile phosphorus exceeded the MPC by 3.40 times, zinc by 1.1 times, nickel by 1.22 times, arsenic by 2.15 times; the BGCP index by 29.41 times. The samples of JSC Taldinsky Coal Mine are classified as sandy loam with a neutral reaction. The content of the mobile form of phosphorus exceeded the MPC by 5.22 times; nickel by 1.5 times; arsenic by 1.67 times. The samples of the reference soil are attributed to clay soils of a slightly alkaline type. The content of the mobile form of phosphorus exceeded the MPC by 2.27 times; nickel by 1.17 times, the BGCP index by 62.62 times. Conclusions. Based on the analysis of the composition of dump and quarry landscapes of technogenically disturbed territories of the Kemerovo region, detoxification of soils with the use of biological reclamation is recommended.
MANAJEMEN PARIWISATA HALAL
Authors: Qital Sabiq Al , Sunarya Silma Lafifa , Rusydiana Aam Slamet
Published: July 2022

Abstrak: Penelitian ini bertujuan untuk mengetahui dan memetakan penelitian terkait pengembangan riset Manajemen Pariwisata Halal. Analisis difokuskan pada menggambarkan karakteristik dan tren kata kunci, penulis, dan jurnal. Data yang dianalisis adalah 191 publikasi penelitian dengan menggunakan metode statistik deskriptif dan analisis bibliometrik menggunakan VOSviewer. Penelitian dengan tema Manajemen Pariwisata Halal telah meningkat setiap tahun. institusi paling terkenal adalah Department of Management, Marketing and Entrepreneurship University of Canterbury, dan penulis terbanyak yaitu Al-ansi A, dan Prayag G. Negara Indonesia menerbitkan makalah bertema Manajemen wisata halal terbanyak dibandingkan dengan negara lain. Sementara itu, kata kunci yang digunakan dalam penelitian ini sering muncul lebih dulu, yaitu "Halal Tourism". Kemudian di tempat kedua, ada "Halal" dan kata ketiga adalah "Tourism". Penelitian ini memberikan informasi bagi peneliti yang berfokus pada penelitian di bidang Pariwisata Halal. Pada akhirnya, topik ini memiliki potensi untuk berkembang.
Kata Kunci: Pariwisata Halal; Manajemen; Bibliometrik; VOSviewer
 
Abstract: This research aims to find out and map research related to the development of Halal Tourism Management research. The analysis focused on describing the characteristics and trends of the keywords, authors, and journals. The data analyzed were 191 research publications using descriptive statistical methods and bibliometric analysis using VOSviewer. Research on the theme of Halal Tourism Management has increased every year. The most famous institutions are the Department of Management, Marketing and Entrepreneurship of the University of Canterbury, and the most prominent authors are Al-ansi A, and Prayag G. Negara Indonesia publishes papers themed on Halal tourism management the most compared to other countries. Meanwhile, the keywords used in this study often appear first, namely "Halal Tourism". Then in the second place, there is "Halal" and the third word is "Tourism". This research provides information for researchers who focus on research in the field of Halal Tourism. In the end, this topic has the potential to develop.
Keywords: Halal Tourism; Manajemen; Bibliometrik; VOSviewer
Experimental determination of the H2S mass transfer coefficient across the liquid–gas interface in gravity sewers
Authors: Pacheco Fernández Micaela , Barjenbruch Matthias
Published: July 2022

Hydrogen sulphide (H2S) emissions in sewer systems lead to several problems such as corrosion, odour nuisances, and health damage to sewer workers. Although the gas is formed in the liquid phase, its effects are noticeable when released into the sewer atmosphere. Until recently, the lack of analytical procedures for continuous monitoring of H2S in the liquid phase, as well as its toxicity, have challenged the quantification of the mass transfer coefficient under real conditions. Because of this, most studies have mainly focused on batch experiments with artificial wastewater and/or oxygen. The aim of this study was to experimentally determine the overall mass transfer coefficient for H2S during intermittent pumping events common in actual sewer systems, using the two-film theory approach and employing online sensors for liquid and gas phase measurements. The mass transfer coefficient was quantified by carrying out 21 experiments with actual wastewater in a 25 m long gravity pipe of a sewer pilot plant located in Berlin (Germany). Results show that the corrected mass transfer coefficient (KLa20) during a pumping event ranged between 0.1 and 8 h−1 with a median value of 4.2 h−1, within the range of the results obtained by the most common empirical models.
Gonolobus cthulhui (Apocynaceae), una nueva especie de Oaxaca, México
Authors: Alvarado-Cárdenas Leonardo O. , Maya-Mandujano Karen G. , Chávez-Hernández María Guadalupe
Published: July 2022

Antecedentes y Objetivos: En México, el género Gonolobus actualmente está representado por 43 especies. Gonolobus ha sido estudiado en algunas floras regionales y continuamente se describen novedades taxonómicas. En este contexto, durante la revisión del material de herbario y colectas realizadas en el estado de Oaxaca, se encontró un ejemplar que no pudo ser asignado a ningún Gonolobus descrito en México y Mesoamérica. Por ello, el objetivo de este trabajo fue describir una nueva especie de Gonolobus de Oaxaca.
Métodos: Se revisaron 11 herbarios y cinco colecciones virtuales, y en 2018 se realizaron varios viajes de campo a Oaxaca para recolectar especímenes. El material estudiado se comparó con otros de morfología similar, se elaboró una tabla comparativa y se incluyó un mapa de distribución. Se presenta el estado de conservación de la especie, según los criterios de la Lista Roja de la UICN y observaciones de campo.
Resultados clave: Se describe una nueva especie de Gonolobus del sureste de Oaxaca, México, con grandes corolas verdes. Se proporciona una descripción e imágenes de la nueva especie. Gonolobus cthulhui es morfológicamente similar a G. leianthus y G. pancololote, pero se diferencia por sus sépalos de punta negra y ampliamente ovados a suborbiculares, el patrón diagonal pubescente en los lóbulos de la corola y el anillo faucal más delgado y discontinuo. Se sugiere una categoría de conservación en peligro (EN) para esta especie.
Conclusiones: Este descubrimiento destaca a Oaxaca como el segundo estado, después de Chiapas, con más especies de Gonolobus (19 spp.), y a México como un centro de diversidad para el género, con 44 especies registradas y 52.2% de las especies endémicas del país.
Prediction of Retinal diseases using Convolutional Neural Networks
Authors: Jeevani M.
Published: July 2022

Abstract: Eye diseases are the common diseases people are facing nowadays. Even people of all ages ranging from children to old are affected due to eye diseases. Some diseases will become very complex if they are untreated at an early stage. To overcome such problems early detection and treatment is required which could prevent vision loss. For many, eye disorders have become almost a part of their daily lives. Traditionally, retinal disease detection techniques were based on manual description. The WHO (World Health Organization) finds that there are millions of visually impaired people all over the world. The retinal diseases include Cataract, Crossed Eyes, Bulging Eyes, Uveitis and Glaucoma can be predicted using convolutional neural networks in this project. Medical Imaging has a huge scope for the application of recent advancements in computation. With the emerging computer technology, the development of an automatic system for diseases using Convolutional neural Networks in association with different optimization methods (SGDM, RMS-PROP, and ADAM). Treating the disease is now possible especially if the patient’s area and medical services are limited. Thus, the idea is to build an algorithm that automatically identifies whether a patient is suffering from any eye diseases or not by looking at the images
Green Synthesis of Schiff Bases by Using Natural Acid Catalysts
Authors: Gundlewad Gangadhar B.
Published: July 2022

Abstract: Schiff bases have been synthesized by the condensation of primary aryl amine with acetophenones under solvent free condition. The reaction is catalyzed by natural acid found unripe mango. This reaction is very simple and has many benefits because of cheap catalyst, good yield of product, simple experimental conditions and easily available natural products. The products were identified by various spectroscopic techniques.
In-silico Homology Modeling and Inhibitors Identification of Breast Cancer
Authors: Kukreja Vinita
Published: July 2022

Abstract: Azadirachta Indica (Neem) is the first introduced medicinal plant in ancient medicine system, used for various disease treatments and household remedies. Lots of phytochemicals have been isolated from the various parts of the tree to study their biological activities. Gedunin has shown anticancer activity and act as Heat shock protein 90 (Hsp90) inhibitor. Breast cancer one of the most common cancer which mainly develops from lobules or ducts. Triple-negative Breast Cancer (TNBC) is an aggressive type of breast cancer in which cancer cells does not have hormone receptors. Due to lack of hormone receptors many targeted therapies were developed for advance stage cancer. The interaction between drugs and protein were examined using spectroscopic techniques, to determine the drug stability and binding site of drug in protein. Computer-aided drug design method were used to develop and analyse the drugs. Interaction between protein and drugs visualize by using molecular graphic viewer tools, to identify protein conformation and binding energy of ligand and protein.
Automated Irrigation System Based on Soil Moisture Sensor
Authors: Dixit Kamta
Published: July 2022

Abstract: In most regions of the world, population growth has resulted in water scarcity. Agriculture wastes a significant amount of water. Water logging during irrigation is the leading cause of water waste in this area. As a result, there is a need to convert to alternate irrigation methods. The Arduino board and a microcontroller are used in this study to suggest an autonomous plant irrigation system. It detects the moisture content of the soil and determines whether or not irrigation is required. It gives appropriate water to the crop after assessing the parameters. When the soil is dry, the pump automatically turns on and distributes water. Similarly, when the soil is wet, the pump shuts down and the crop receives no water. This not only saves water that would otherwise be wasted, but it also ensures that the crop receives only the amount of water it requires. The development of automation technologies has made life simpler and easier in every way. In the modern world, automatic systems are favoured over manual ones. A expanding system of ordinary objects called automatic systems While you're busy, an industrial machine may produce consumer products with additional activities.
The accountability of village funds and to improve the effectiveness of village programs
Authors: Suryani Arna
Published: July 2022

This study aims to analyze the management of village funds and village finances, as well as the inhibiting factors in the management of village funds and village finances. The data was obtained from informants at the research site (Harapan Makmur Village, East Tanjung Jabung Regency, Jambi Province). Data collection is carried out by triangulation in interview observations, literature, and documentation. Data analysis used a qualitative approach based on the NVivo 12 Plus program. The results showed that the management of village funds started early in the planning stage by identifying and selecting programs or activities that were urgent and prioritized for the community. The implementation stage is processed following the Regulation of the Minister of Finance Number 199 of 2017 concerning procedures for allocating village funds and implementing the village income and expenditure budget. Financial recording and reporting have been carried out correctly and adequately, and village funds have also been reported transparently to sub-district and district governments and village communities. Nevertheless, several obstacles are faced by the Harapan Makmur village government in optimizing the management of village funds. These constraints are related to the capacity of village apparatus resources, natural factors, low community support for managing village funds, inappropriate disbursement system, and government policies and regulations that change yearly
Oil price volatility and industrial productivity: a comparative analysis of Nigeria and Egypt
Authors: Folasade Ayodele
Published: July 2022

This study examines the relationship between oil price volatility and industrial productivity in Nigeria and Egypt from 1980 - 2020. The study employs cointegration analysis and the Error Correction model to analyze data. The result shows that oil price volatility hinders industrial productivity in both Countries. But the magnitude of the effect was more in Nigeria than in Egypt. It can be traced to the fact that Nigeria is an importing Country while Egypt is a net exporting country. Also, Nigeria has neglected important sectors like the Industrial sector at the advent of oil, which made Nigeria a mono-product country for decades. Based on these findings, the study recommended diversification of the export revenue base for Nigeria to minimize reliance on oil. Also, alternative energy sources such as biofuel and solar power plants should be developed for the two countries to reduce dependency on oil consumption.
GIANT MANDIBULAR OSTEOSARCOMA: A CASE REPORT
Authors: Ndrianarivony Simon Carnot , Randriamanantena Tahiriarivelo , Razaka Andrianina Ismael
Published: July 2022

Mandibular osteosarcomas are relatively rare compared to those occurring
in the long bones. We report a case of giant mandibular osteosarcoma in
a 52-year-old woman that we realized a complete resection. An early
diagnosis and a complete resection of the lesion are necessary for a
better prognosis.
Full field model describing phase front propagation, transformation strains, chemical partitioning and diffusion in solid-solid phase transformations
Authors: Pohjonen Aarne
Published: July 2022

A novel mathematical formulation is presented for describing growth of
phase in solid-to-solid phase transformations and it is applied for
describing austenite to ferrite transformation. The formulation includes
the effects of transformation eigenstrains, the local strains, as well
as partitioning and diffusion. In the current approach the phase front
is modelled as diffuse field, and its propagation is shown to be
described by the advection equation, which reduces to the level-set
equation when the transformation proceeds only to the interface normal
direction. The propagation is considered as thermally activated process
in the same way as in chemical reaction kinetics. In addition,
connection to the Allen-Cahn equation is made. Numerical tests are
conducted to check the mathematical model validity and to compare the
current approach to sharp interface partitioning and diffusion model.
The model operation is tested in isotropic two-dimensional plane strane
condition for austenite to ferrite transformation, where the
transformation produces isotropic expansion, and also for austenite to
bainite transformation, where the transformation causes invariant plane
strain condition. Growth into surrounding isotropic austenite, as well
as growth of the phase which has nucleated on a grain boundary are
tested for both ferrite and bainite formation.
Nanoemulsification synthesis route for obtaining highly efficient Ag3PO4 photocatalytic nanomaterial
Authors: Prekajski-Djordjevic Marija , Zarubica Aleksandra , Kalijadis Ana , Babic Biljana , Butulija Svetlana , Maletaskic Jelena , Matovic Branko
Published: July 2022

Nanoemulsion technique based on Ouzo effect was applied for the fast and simple synthesis of Ag3PO4 at room temperature. X-ray powder diffraction analysis and Raman spectroscopy reviled that synthesized powder was single-phase. Using scanning electron microscopy analysis, it was found that the synthesized Ag3PO4 particles were near-spherical shape with an average diameter of 100 nm. The high value for the specific surface area of obtained powder was measured by Brunauer?Emmet?Teller method. Finally, the Ag3PO4 product was used as a photocatalyst for the photodegradation of crystal violet dye in an aqueous solution. Nanoemulsion strategy procedure provides a simple pathway to obtain a highly efficient single-phase Ag3PO4 photocatalyst.
25 years of NICS - much more than nothing!
Authors: Puchta Ralph , Djordjevic Sladjana , Radenkovic Slavko , Jiao Haijun , van Eikema
Published: July 2022

The famous aromaticity index NICS (nucleus independent chemical shift) was introduced 25 years ago. The authors use this anniversary for a short and to some degree personal retrospective.
The influence of different enzymatic preparations and skin contact time on aromatic profile of wines produced from autochthonous grape varieties Krstac and Zizak
Authors: Madzgalj Valerija , Petrovic Aleksandar , Cakar Uros , Maras Vesna , Sofrenic Ivana , Tesevic Vele
Published: July 2022

This study aimed to show aromatic profile of wines produced from two autochthonous grape cultivars Krstac (K) and Zizak (Z). During the wine production two enzymatic preparations (EP) Lallzyme cuvee blanc (CB) and Lallzyme enzymatic preparation ? (EB) and different time of skin contact (4 and 8 h) were applied. Aromatic compounds were detected by GC/FID?MS analysis. Significantly higher content of total detected aromatic compounds compared to appropriate controls (168.54 and 161.72 mg L-1) was observed for K EB4h (176.33 mg L-1) and Z CB4h (177.29 mg L-1) wines. Skin contact and usage of EP mostly increased content of 2-phenylethyl and isoamyl alcohols. Wines from both varieties showed higher content of hexanoic and octanoic acids compared to the control. It is interesting to emphasize that content of esters that are responsible for fruity aroma of wine which is important for pleasant taste (isoamyl acetate ? banana, ethyl hexanoate ? ripe banana, 2-phenylethyl acetate ? powerful fruity rose like) were increased in all samples compared to the controls. The highest grades, after sensory evaluation, were obtained for K EB 8h (18.0 out of 20.0) and Z CB 8h (18.2 out of 20.0).
The impact of COVID-19 pandemic and national lockdown on the surgical care of ophthalmic patients in a tertiary health care institution
Authors: Vasilijevic Jelena , Risimic Dijana , Bozic Marija , Trenkic Marija , Manojlovic Sara , Kovacevic Igor
Published: July 2022

Introduction/Objective. World Health Organization in January 2020 declared a pandemic of the coronavirus disease named COVID-19. The state of emergency in the Republic of Serbia began on March 15 2020, which greatly influenced the treatment of those patients who were not affected by COVID-19. The aim of this paper is to compare the most common ophthalmic surgeries during quarantine with those performed in 2019 in the same period. Methods. This is a retrospective study. We collected data from the operating protocol of the main ophthalmic operating room. We have followed the changes related to surgical procedures during these two years. Results. During the state of emergency, significantly more operations were performed on male patients than on female patients compared to the same period in 2019 (p = 0.043). In the observed period, in 2019 significantly more patients older than 65 were surgically treated (p < 0.001). During 2019, there were 397 (64.3%) elective and 220 (35.7%) urgent procedures, while for the same period next year there were 9 (9.1%) elective and 90 (90.9%) urgent procedures. Significantly more urgent interventions were performed during 2020 compared to 2019 (p < 0.001). Conclusion. The coronavirus pandemic has led to numerous changes in the treatment of ophthalmic patients. Many patients did not have access to adequate treatment, which certainly led to the impairment of many ophthalmic diseases.
Post Ankle Sprain Injury Associated with Lateral Ligaments Tear Rehab Protocol
Authors: Alghalibi Mohammed Thamer , Alghamdi Abdulrahman Saleh , Alosaimi Fawaz Sulayyih Hamad
Published: July 2022

Introduction: Injury to the lower extremity joint injury is one of the most common consequences of accidents in recreation and sports. The incidence of ankle sprain after or during the rehabilitation of lateral ligament tear is popular however, little is known about the prevalence of post rehabilitation ankle sprain in Saudi Arabia. Therefore, the aim of this study was to assess the prevalence of post ankle sprain injury among patients who underwent lateral ligament tear rehab conservatively. Methodology: This is a cross sectional study among patients who underwent lateral ligament tear rehabilitation conservatively using self-reported questionnaire which was distributed using online means as WhatsApp or Facebook throughout Google sheets. The data was analyzed using the statistical package for the social science (SPSS) version 23.0. Results: In this study, we were able to collect data from 104 participants who applied to the inclusion criteria. Among the participants 43.3 % of the participants aged between 20 -30 years old and 70.2 % of the participants were males and 69.2 % were married. According to the participants, 16.3 % of the participants reported having ankle sprain injury after or during the rehabilitation while 6.7 % of them reported having ankle sprain injury during the rehabilitation. Conclusion: We found that 16.3 % of the patients reported having ankle sprain injury after or during the lateral ligament injuries rehabilitation. Patients reported full recovery after rehabilitation showed lower prevalence of post rehabilitation ankle sprain injury.
Broken Heart Syndrome; A Recurrent Presentation in a Teenager Female
Authors: Eltayeb, MBBS Abdulrahman , Ogran, MD Hassan , Eltayeb, MD Abdalla
Published: July 2022

Takotsubo syndrome (TTS) is a cause of heart failure with a wide range of clinical outcomes from mild to severe including, heart failure, arrhythmias and thromboembolic consequences. In its extreme forms, it can cause cardiogenic shock, strokes, and sudden cardiac death (SCD). This is a case report of a 21-year-old female with an unusual presentation of recurrent basal form of TTS (apical hyperkinesia with basal and mid segments akinesia), which was precipitated by recurrent painful crises of acute intermittent porphyria (AIP). AIP is an autosomal dominant disease resulting from a defect in porphobilinogen deaminase enzyme which is a part of the heme synthesis pathway. Acute attacks of AIP manifest mainly as episodes of abdominal pain, neuropathies and constipation. This case report highlights that TTS can occur in younger populations in contrast to what was classically described as the disease of post-menopausal women. It raises the awareness that TTS could be recurrent specially when there is proximity between the attacks.
Effect of Organizational Justice on Employee Engagement in the Hospitality Industry
Authors: Onyango Robert Odhiambo , Egessa Robert , Ojera Patrick
Published: July 2022

This study was designed to asses’ organizational justice and employee engagement in the hospitality industry in North Rift region, Kenya. With a sample size of 234 respondents, an explanatory research design was used with a target population of 580 employees from star-rated hotels in the North Rift region. Questionnaires and interviews were used to gather information. SPSS version 25.0 was used to analyze the data using descriptive and inferential statistics. From the findings employee engagement and organizational justice have a strong significant relationship. Employee engagement was explained by organizational justice at 71.8%. The study's findings support the necessity to improve organizational justice in order to increase employee engagement. The findings of this study can assist the government (both national and county levels), as well as important stakeholders in the hotel industry, in identifying the need for developing organizational justice policies and practices to realize employee engagement.
Effect of Perceived Risk and Perceived Value on Customer Loyalty through Customer Satisfaction as Intervening Variables on Bukalapak Users
Authors: Khasbulloh Ahmad Havid Khanan , Suparna Gede
Published: July 2022

The increase in e-commerce users is an opportunity for the marketplace to enter Indonesia. The number of marketplaces makes consumers more selective in shopping. To continue to compete, the marketplace cannot focus on getting new buyers, but must also create loyalty for existing customers. The purpose of this study is to explain the effect of perceived risk and perceived value on customer loyalty through customer satisfaction as an intervening variable. This research was conducted on 108 respondents, data was collected using google forms. This study was measured using 18 indicators and the analytical tool used was PLS (Partial Least Square). The results show that all hypotheses were accepted. Perceived risk has a negative and significant effect on customer satisfaction and customer loyalty. Perceived value has a positive and significant effect on customer satisfaction and customer loyalty. Customer satisfaction has a positive and significant effect on customer loyalty, and customer satisfaction plays a significant role in mediating the influence between perceived risk and perceived value on customer loyalty. The implementation of this study shows that in creating customer loyalty, Bukalapak's management is expected to be able to optimize the risk and value perceived by consumers, as well as customer satisfaction which can also increase customer loyalty.
The Effects of COVID-19 on the Albanian Trade Balance
Authors: Dragusha Blerta , Ulqinaku Sabrid
Published: July 2022

This paper presents data on the Trade Balance in Albania and the effect of the pandemic on this important macroeconomic indicator. The situation in which Albania is, the challenges it faces today and will face in perspective make the study of this balance very necessary. The fact that Albania over the years has had a negative trade balance, should be subject to a review that considers the factors that have influenced, the deterioration of this indicator in the last year and the opportunities that can be used to improve it.
Albania's foreign trade has evolved over the years. However, given that our country was part of a transition, recovery was not at all easy. Precisely from this factor, the analysis of the last 10 years will focus on import-exports by goods and services, as well as between countriesю
Accident Prevention Program Prioritization Using Kepner Tregoe Model: Case Study of PT Pertamina EP Regional 2 Zone 7
Authors: Hidayat Taufik , Hermawan Pri
Published: July 2022

Pertamina EP Regional 2 Zone 7 (PEP R2Z7), a section of PT Pertamina EP (PT PEP), the National Oil Company of Indonesia, is an upstream Oil and Gas Company that operates in West Java Indonesia. The company conducts high-risk activities in exploration and production to extract oil and gas. According to the accident historical data, 40 work-related accident cases occurred in PEP R2Z7 in the period from 2018 to 2021. Accidents are caused by multiple factors that require programs to prevent a similar accident. The established accident prevention program in the company is generated from all accident data in PT PEP working areas around Indonesia which consist of 14 Zone. Because of these conditions, the accident prevention program becomes out of focus and needs to be prioritized based on accident case data. Accident prevention program priority is determined by the combination of Kepner Tregoe Method and Pertamina DNV SCAT accident root cause. The combination method is used to describe the root cause of an accident case, identify the accident prevention program criteria, and relevant alternatives to accident prevention programs based on the accident historical data, and choose the alternatives. The alternative solution is consist of the enhancement of established prevention programs and proposed the new prevention program. Some of Established prevention programs are still relevant with the historical data in Pertamina Region 2 Zone 7 such as Iman Campaign or Strengthen Work in Progress (WIP) Assessment. Meanwhile, some of the new proposed programs are Task Observation/Safety Awareness Supervision or Buddy System work for high-risk job. The implementation of the alternative solution is embedded inthe  Objectives Target Program (OTP) of Health Safety Security and Environment (HSSE) PEP R2Z7. The OTP contains the program purpose, detail program, the output and the evidence of the program, schedule, and progress monitoring of the program. The proposed alternative solution is expected to reduce the number of accident cases in PEP R2Z7.
Theoretical Evidence For Ultrasonic Insulation Using a Fractal-Like Phononic Crystal Membranes
Authors: Elmadani Abdelfattah , Idrissi Abdelmajid , Braik Ramdan , Bensallam Saad , Bouaaddi Abella , Achaoui Younes , Jakjoud Hicham
Published: July 2022

Phononic crystals are artificial engineered materials designed to control and manipulate waves. Unusual behaviour of prohibiting the acoustic propagation in some frequency bands (Band GAP), is a practical way to produce sound-ultrasound-proof environments with a small spatial footprint. In this work, we present a new fractal-like phononic crystal for extraordinary ultrasonic insulation. The host material is a silicon plate where the unit cell is formed by triangular slice and immersed in water. Our simulation is made between 300 kHz and 1.2 MHz and show the possibility of obtaining a wideband-gap, inferior to the one described by the mass law related to a homogeneous silicon membrane, with an attenuation reaching -70 dB, depending on the filling factor.
Imperialism, Evangelization, and the Moroccan Landscape
Authors: Safoui Latifa
Published: July 2022

Christian missionary evangelization reached its culminating point during the nineteenth century. Many experts in the field of missionary studies owe this flurry of Christian missions to an equivalent extending reach of imperialism, which, they contend, had largely facilitated the work of the Christian missions, providing them with the necessary logistic and financial support. The present paper puts forward a different view based on the trajectory of the Christian missions in Morocco at the epoch. It argues that the grand aims of imperialism were far from being spiritual. Furthermore, the political situation of Morocco during the colonial era, being a highly disputed colonial territory amongst the then superpowers, Britain and France, generated a conflict of interests that influenced the missions’ strategies of work there. The claim that Christian missionaries served as imperial agents in Morocco, working on promoting the high interests of their colonial countries, is open to question.