bluuebunny/crossref_metadata_2025 huggingface dataset:
PROSPECTS AND BACKGROUND INTRODUCTION OF AUTONOMOUS POWER SUPPLY SYSTEMS FOR AGRICULTURAL ENTERPRISES
Authors: Kupchuk Ihor , Yaropud Vitalii , Telekalo Nataliia , Hraniak Valerii
Published: January 2021

The agro-industrial complex is one of the most stable in terms of revenue to the budget of intersectoral formations, in which significant amounts of electricity produced using fossil fuels, mainly imported, fuel resources are consumed for the implementation of production processes, which poses a threat to its effective functioning and makes in the research article. The purpose of the article is to assess the potential and determine promising methods of decentralized power supply for agro-industrial producers based on the analysis of modern technical and technological solutions in the field of electrical engineering and the synthesis of a promising scheme for a combined autonomous power supply system for agricultural enterprises.
The article assessed the technical and technological capabilities for the use of autonomous electrical installations by small and medium-sized enterprises of the agricultural sector, operating on the principle of conversion of renewable sources, taking into account the natural and climatic potential of the Vinnytsia region.
As a result of a comparative analysis of the operational characteristics of the known methods of accumulating electric energy, it was found that in the conditions of autonomous power supply of small and medium-sized agro-industrial enterprises due to the conversion of alternative energy sources, the most functionally and economically justified option is the use of energy storage systems based on flywheels with partial use of a backup unit lithium-ion batteries.
Based on domestic and foreign experience, a promising scheme of a combined autonomous power supply system for small and medium agricultural enterprises was proposed and priority areas for further research were formed to improve the efficiency of such a system.
The study of technical and technological prerequisites for the development of a combined system of autonomous power supply and its components was carried out using methods of analysis, generalization and a systematic approach. The potential advantages and effect of the proposed scheme implementation are based on the laws of development of technical and electric power systems.
Mesenchymal stem cell spheroids: potential cell materials for cell therapy
Authors: Xu Zhongjuan , Liu Xingzhi , Wei Yu , Zhao Zhe , Cao Junjun , Qiao Yong , Yu Yanzhen , Zhong Junjie , Suo Guangli
Published: January 2021

Mesenchymal stromal/stem cells (MSCs) have been applied in clinical trials with an increasing number in recent years. MSCs showed their great potentials in regenerative medicine for their extensive sources, multilineage differentiation potential, low immunogenicity and self-renewal ability. However, the clinical application of MSCs still confronts many challenges including the requirement of large quantity of cells, low survival ability in vivo and the loss of main original characteristics due to two-dimensional (2D) culture although it is beneficial to cells fast expansion. Three-dimensional (3D) culture artificially creates an environment that permits cells to grow or interact with their surroundings in all three dimensions. Therefore, 3D culture was widely regarded as a more preferable and closer physiological microenvironment for cells growth. Recently, many different 3D spheroid culture methods have been developed to optimize MSCs biological characteristics to meet the demand of regenerative medicine. In this review, we comprehensively discussed the merits and demerits of different spheroid formation methods, expounded the mechanisms of spheroid formation and its microenvironment, and illustrated their optimized biological functions and the pre-clinical applications in various tissue injury and regeneration. In the end, we prospected the trends of this research field and proposed the key problems needed to be solved in the future.
Inhibition of microRNA-874 ameliorates cardiomyocyte apoptosis and improves cardiac function in the peripartum cardiomyopathy of Gαq transgenic mice
Authors: Zhou Chenchen , Pei Jindan , Zhao Xiaobo , Gu Shengyi , Wu Yuelin , Wan Sheng , Che Ronghua , Han Zhimin , Hua Xiaolin
Published: January 2021

It is widely reported that microRNAs (miRNAs, miRs) play critical roles in the occurrence and development of peripartum cardiomyopathy (PPCM). Here, we aimed to explore the biological role of miR-874 and its underlying mechanisms in PPCM. To this purpose, a mouse model of PPCM was established through cardiac-specific overexpression of Gαq. Transthoracic echocardiography and left ventricular catheterization were used to examine the cardiac functions and hemodynamics. Apoptosis of the cardiomyocytes was determined by the terminal deoxynucleotidyl transferase dUTP nick end labeling assay. The direct interaction between miR‐874 and signal transducer and activator of transcription 3 (STAT3) was confirmed by luciferase assay. The expression of apoptosis-related genes and proteins was evaluated by real-time quantitative reverse transcription polymerase chain reaction and Western blot, respectively. The results demonstrated that miR-874 inhibition significantly increased the survival and cardiac functions of pregnant Gαq transgenic mice. In addition, miR-874 inhibitor ameliorated cardiomyocyte apoptosis, downregulated both mRNA and protein levels of Bax, while upregulated those of Bcl-2. Further, STAT3 was found to be a direct target of miR-874. In addition, miR-874 inhibition increased the expression of STAT3 and janus kinase 2. In summary, miR-874 inhibition could improve cardiac functions and suppress cardiomyocyte apoptosis by targeting STAT3 during PPCM in Gαq transgenic mice.
MASKULINITAS DALAM MEDIA ONLINE: ANALISIS WACANA KRITIS DALAM KAJIAN CERAMAH USTADZ SALAF
Authors: Rosyid Ahmad Abdullah
Published: January 2021

Media is an intermediary that is widely used in conveying information, such as print media, visual media (television), and online visual media. The information contained a lot about ideology, hegemony, power, and even marginalization. The media is also very influential in affirming the concept of gender in society, one of which is YouTube's online media which is considered the most effective in disseminating information. Various kinds of accounts publish videos with various concepts, some contain games, some have vlogs, and some contain lectures. In this paper, the researcher will discuss the contents of the lecture delivered by Ustadz Khalid on gender issues, such as differences between men and women and the characteristics of a man towards women. Three shows were taken as samples and analyzed using Norman Fairclough's critical discourse theory which offers three-dimensional concepts in it; textual, discourse, and social. The results obtained were from the three videos, Ustadz Khalid tried to instill ideology in the community. This is in line with the patriarchal family system adopted by the majority of people in Indonesia.
UNPACKING THE TPACK FRAMEWORK IN EFL CONTEXT: A REVIEW OF EMPIRICAL STUDIES FROM 2015 TO 2019
Authors: Anjarani Shelia
Published: January 2021

Technological Pedagogical Content Knowledge (TPACK) has been implemented as a conceptual framework for the knowledge domains that teachers need to master to successfully teach using technology and it has attracted a lot of attention across the field of education. Nonetheless, the framework has been criticized for not being practically useful. TPACK studies were mostly conducted in Mathematics and Science. Meanwhile, research on integrating English as a foreign language (EFL) into TPACK has been lagging behind. To better understand the critics, an investigation of general characteristics of TPACK studies in EFL context is needed. This paper is a systematic literature review of 20 peer-reviewed journal articles concerning the use of TPACK in EFL context published from 2015 to 2019.
ANALYSIS NEEDED FOR PREPARATION OF TEACHING MATERIALS IN ENGLISH FOR MEDICAL PERSONNEL IN BATAM CITY
Authors: Nugraha Hendra , Chairunisa
Published: January 2021

This study aimed to find out the needs, functions, and problems faced by medical personnel in Batam city in using English for the medical field. Research is useful for developing language training and courses for special needs through analysis used to map the concrete needs of users. This research uses quantitative methods where the use of quantitative methods and data. Instruments and techniques of data collection is the way how the author uses strategies and instruments to collect data, in this case the authors collected data with questionnaires and asked respondents to fill it out and use the data processor. Based on the research results, it was found that the most needed English language skill was speaking. Therefore, the teaching materials that will be compiled are those that support speaking skills. As a learning direction, the teaching materials that are prepared also need to include elements of the function of English which are considered important for medical personnel in Batam City, namely to provide information. Finally, in compiling English teaching materials for medical personnel, it is necessary to include English grammar skills in order to support the confidence of medical personnel in Batam City.
Pendidikan Kesehatan pada Ibu Hamil dan Nifas tentang Asi Ekslusif untuk Meningkatkan Cakupan Asi Ekslusif
Authors: M Winda Nurmayani , Syamdarniati Syamdarniati , Mulianingsih Misroh , Wasliah Indah , Halid Sopian
Published: January 2021

Background: The Indonesian government has targeted exclusive breastfeeding 80%, but exclusive breastfeeding is not widely done, although the benefits of exclusive breastfeeding are very many, especially for babies and mothers, but in fact many mothers do not give exclusive breastfeeding to their babies, and in the field many mothers stop giving Breast milk in her baby before the age of 2 years. The process of early breastfeeding does not always run smoothly, sometimes mothers and babies experience various obstacles that hinder or complicate the process of breastfeeding, especially if this is the first experience for primigravida mothers who are still young and have a low level of knowledge about breastfeeding that hinders the practice of breastfeeding, and usually her child is not yet 2 years old ASI has been discontinued (Dewanetal., 2002; Yanikkeremetal., 2009). The purpose of this community service is to educate pregnant and post-partum mothers how to properly care for breast and breastfeeding techniques in an effort to increase exclusive breastfeeding coverage. Methods: This community service method is carried out by means of counseling in delivering material then followed by demonstrations and Q&A sessions. Results: The results of this dedication appear to be still many pregnant women and postpartum mothers who do not know the benefits of exclusive breastfeeding, how to care for the breast and how to breastfeed the right baby techniques, after health promotion and demonstration it appears that pregnant women and postpartum mothers are serious in understanding every step demonstrated. . Conclusion: Based on the results of the service, it is hoped that this activity can increase the coverage of breastfeeding mothers so that they can provide exclusive breastfeeding to their babies.
The Pemberdayaan Masyarakat dengan Aktivitas Leisure
Authors: Wahyuni Endang Sri , Prasetyaningsih Roh Hastuti
Published: January 2021

Background:  The temporary suspension of  Posyandu Elderly activities has resulted in a decline in the role and function of health cadres in monitoring the health of the elderly. This is also accompanied by a decrease in the health condition of the elderly because they cannot carry out social leisure activities, which are generally carried out in the Elderly Posyandu activity forum. The purpose of this community service activity is so that cadres can optimize their role and function in monitoring the health of the elderly during a pandemic. The health of the elderly is maintained through the leisure activity program provided. Meanwhile, the elderly who are affected by Covid-19can still be guaranteed their basic needs through the distribution of existing assistance. Methods: For cadres are given counseling and training on the role of health cadres during a pandemic. Elderly people are given leisure activity programs carried out both individually and in small groups, facilitating leisure activities, counseling on preventing the spread of Covid-19, and distributing basic needs assistance for elderly people affected by Covid-19. Results: Kader has demonstrated its performance in monitoring the health of the elderly and helping facilitate elderly leisure activities. Elderly people can do leisure activities during the pandemic so they don't feel lonely anymore, feel happy because they can meet other elderly people of their age, don't feel overly afraid, and can participate in social activities to support the basic needs of elderly people affected by Covid-19. The awareness of the elderly in applying the new health norms has also increased. Conclusion: Of community empowerment with leisure activities during the pandemic can be realized thanks to cross-sectoral cooperation. This activity requires a follow-up in the form of evaluation and monitoring of existing programs.
Edukasi Dengan Metode Audiovisual Sebagai Upaya Peningkatan Pengetahuan Kader Mengenai Bahaya Tersedak Pada Bayi
Authors: Rizqiea Noerma Shovie , Utami Ratih Dwilestari Puji
Published: January 2021

Background: Children are uniquely vulnerable to a variety of emergency situations. These situations are often life-threatening if not treated quickly and effectively. Infants and young children are at higher risk for respiratory emergencies than adolescents or adults. Young children often lack coordination, which makes them prone to choking on food and small objects, which can also lead to cardiac arrest. The aim of this community service is that after receiving health education and demonstrations about the dangers of choking, it hopes that an increase in cadres' knowledge of the dangers of choking at the Posyandu for toddlers, Sadar Ibu I, Dusun Jetak. Methods: Respondents involved were 14 cadres of Posyandu Toddler Sadar Ibu I Dusun Jetak. Activities carried out online. The activity began with a pre-test, then continued with provisions health education using audio-visual video media, and ended with a post-test measurement. Results: The percentage of knowledge of cadres during the pre-test showed that 3 cadres (21%) had good knowledge, and the remaining 11 cadres (79%) had less knowledge. The post-test results showed that 10 cadres (71%) had good knowledge, and the remaining 4 cadres (29%) still had a bad knowledge. Conclusion: Increase Cadre's knowledge of the dangers of choking on babies.
The Mechanical Properties Requirement for Polymer Composite Automotive Parts - A Review
Authors: Fitri Muhamad , Mahzan S. , Anggara Fajar
Published: January 2021

Indonesia has a large variety of natural fibers in abundance. Some of natural fibers become organic waste if not used for something needed by humans. One of the potential uses of natural fiber composite materials is to be used in automotive components. But before natural fiber composites are used in automotive components, it is necessary to examine first what are the requirements for mechanical properties or other properties required by the automotive components. Especially the automotive components which have been made from Polymers, like  dash board, Car interior walls, front and rear bumper and Car body, etc. Each of these automotive components has different function and condition, and that caused different mechanical properties needed. The purpose of this study is collecting the data from the literature, related to the properties needed for these automotive components. This study was conducted by studying the literature of research journals in the last 10 years. From the research journals, data on the requirements of mechanical properties for automotive components will be collected. Furthermore, the data of mechanical properties required for automotive components can be used as a reference to determine the reliability of automotive components made from composite
Building Indonesian Humanity through Civic Education in High School
Authors: Hijriana Hijriana
Published: January 2021

This article provides an explanation of the concept of Building a Whole Indonesian Man in Pancasila Education. Developing Indonesian people as a whole is, in essence, Indonesia's national development. It is also the basic concept of Indonesian education. Building a Whole Indonesian Man has a relationship with Pancasila. As discussed earlier that Pancasila is the basis of the state which is the guideline for the Indonesian nation. So whatever is to be done within the Indonesian state basically must make Pancasila as a guideline in regulating the life and welfare of its people.
Hubungan Power Otot Tungkai Dengan Kecepatan Tendangan Mawasi Geri Pada Mahasiswa Pendidikan Jasmani Kesehatan Dan Rekreasi (PJKR) Fakultas Olahraga dan Kesehatan Universitas Negeri Gorontalo
Authors: Lamusu Ahmad , Lamusu Zulkifli A.
Published: January 2021

Penelitian ini bertujuan untuk mengetahui Hubungan antara power otot tungkai dengan kecepatan tendangan mawasi geri pada mahasiswa Pendidikan Jasmani Olahraga Kesehatan Dan Rekreasi (PJKR) Fakultas Olahraga dan Kesehatan Universitas Negeri Gorontalo. Hipotesis dalam penelitian ini yakni “Terdapat Hubungan antara power otot tungkai dengan kecepatan tendangan mawasi geri pada mahasiswa Pendidikan Jasmani Olahraga Kesehatan Dan Rekreasi (PJKR) Fakultas Olahraga dan Kesehatan Universitas Negeri Gorontalo. Metode penelitian yang digunakan adalah metode Penelitian kuantitatif yang bersifat korelasi. Dengan desain terdiri atas 2 variabel penelitian yaitu Variabel X (Daya Ledak Otot Tungkai) dengan Variabel Y (Kecepatan tendangan mawasi geri), Adapun sampel dalam penelitian yang ditetapkan adalah sebanyak 20 mahasiswa Pendidikan Jasmani Olahraga Kesehatan Dan Rekreasi (PJKR) Fakultas Olahraga dan Kesehatan Universitas Negeri Gorontalo yang diambil secara Purfosive Sampling. Uji statistik yang digunakan untuk menguji hipotesis penelitian ini adalah uji korelasi, dan Dari hasil pengujian menunjukkan rhitung (0,625) > rtabel (444). Jadi ada hubungan variabel bebas dengan variabel terikatnya adalah signifikan. Dari data tersebut dapat menjawab hipotesis bahwa ada Hubungan antara power otot tungkai dengan kecepatan tendangan mawasi geri pada mahasiswa Pendidikan Jasmani Olahraga Kesehatan Dan Rekreasi (PJKR) Fakultas Olahraga dan Kesehatan Universitas Negeri Gorontalo.
Fish species composition in the Kaliotik River, Lamongan Regency, Indonesia
Authors: Shaleh Fuquh Rahmat , Rahayu Agung Pamuji , Pasisingi Nuralim
Published: January 2021

This research aimed to determine the species composition of fishes in the Kaliotik River, Lamongan Regency. The sampling was conducted from March to May 2020 at four stations. A total of 1031 samples caught by the fishing net during the study consists of Anabas testudineus, Trichogaster trichopterus, Hyposarcus pardalis, Mystus sp., Channa striata, Oreochromis mossambicus. The fish diversity index values indicated that the river is in low to moderate condition. The species was also slightly evenly distributed in the waters with no dominant species. Trichogaster sp. and Anabas testudineus are the two dominant species found in the waters with a relative abundance of 44 % and 41 %, respectively. The Kaliotik River ecosystem balance was affected by disposal from human activities along the riverbank.
Utilization rate of fish resources in Banggai Laut waters
Authors: Putra Aswad Eka
Published: January 2021

Capture fisheries is one of the leading sectors that drive the economy of Banggai Laut Regency. Improved fishing technology is related to fishing efforts that will affect the sustainability of fish resource stocks in the waters of Banggai Laut Regency. This study aims to identify the rate of utilization of fish resources in an effort to develop a sustainable fisheries sector in Banggai Laut waters. The method approach used is "Surplus Production". This method serves as an estimator of the relative abundance of a fish resource in the waters of Banggai Laut Regency which is based on the catch per unit of fishing effort. The results showed that the capability of the fishing fleet in Banggai Laut Regency has not been able to reach potential fishing areas. The catch per unit effort (CPUE) of fish resources in Banggai Laut Regency still shows an increasing trend with the highest rate of increase by other fish group including crustaceans and mollusks, about 0.160 tons/unit in the 2014-2016 period. Meanwhile, the catch per unit effort of the large pelagic fish group showed an increasing trend with the lowest rate of increase, about 0.001 tons/unit in the 2014-2016 period. Therefore the utilization rate of fish resources in the waters of Banggai Laut Regency is still classified as under exploited.
Population structure of giant clams (tridacnidae) in Aceh Besar district waters
Authors: Fazillah M Rizki , Octavina Chitra , Agustiar Muhammad , Akhyar Muhammad
Published: January 2021

Giant clams have an essential ecological role in the coral reef ecosystem. Given the decreasing number of giant clams in nature, the status of giant clams as protected animals, and there is still little information about giant clams, data or information is needed to make policies regarding giant clam conservation management. This study aimed to determine the population structure of giant clams (Tridacnidae) in the coral reef area of Aceh Besar District. The research was conducted in May 2018, located in Aceh Besar Regency waters with six observation stations. Observation of giant clams is carried out using a visual census technique with the belt transect method. The observations showed that the giant clams found in Aceh Besar waters consisted of 2 species, namely Tridacna maxima and Tridacna crocea. Overall stations, the individual density of giant clams is 0.041 ind. m-2. The diversity index of giant clams shows a value ranging from 0–0.97, classified in the low diversity category. The similarity index value of giant clams is classified into the stressed to stable similarity category with values ranging from 0–0.97. The dominance index value of giant clams is classified in the medium to high dominance category with values ranging from 0.52 to 1. The distribution pattern of the two giant clam species found in the waters of Aceh Besar District has a uniform distribution pattern with values ranging from 0.20–0.29. The overall population structure of Tridacnidae is in unstable condition.
Dean Vortex for Laminar Flows in Curved Pipes with Various Cross-Sections
Authors: Ajgoun Siham , Naciri Jaafar Khalid , Khatyr Rabha
Published: January 2021

Curved pipes flows are encountered in different areas such as heat transfer, chaotic mixing, separation of mixtures in pipes, or blood circulation among others and exhibit a variety of characteristics depending on the ranges of Dean numbers and pipe curvatures. Studies on curved pipes flows usually consider the cases of circular, elliptical, and rectangular shapes for the cross sections of the pipe. The present work extends the availability of asymptotic analytical solutions to new ranges of cross-sectional shapes while considering fully developed steady state flows at low Dean numbers. The new shapes are given by a polar equation R* (q) satisfying the relation 1-R^(*2) (q)+dR^(*y) (q)sin(yq)=0 where d and y are parameters. The zero-order azimuthal velocity profiles for various cross-sections are given by exact analytical solutions. Solutions for the nonhomogeneous biharmonic equation for the secondary flows are given by using exact expressions for the particular solutions. Furthermore, the Fourier series decomposition of the solution is adopted to determine the integration constants that allow satisfying the non-slip boundary conditions. Solutions are presented for semi triangular (y=3) , square (y=4), and pentagonal (y=5) cross sections shapes. It is found that the velocity distribution and the Dean’s vortexes intensities are modified in function of the cross-section shapes.
Modelling and Numerical Simulation of a Passive Wall Incorporating a Phase Change Material
Authors: M’Ziane Mohamed Cherif , Grine Ali , Younsi Zohir , Touhami Mohamed Salah Khelifi
Published: January 2021

The energy consumption of a building is strongly dependent on the characteristics of its envelope. The thermal performance of external walls and roof represents a key factor to increase the energy efficiency of the construction sector and to reduce greenhouse gases emissions. Integration of Phase Change Material (PCM) in building envelope is undoubtedly one of the best ways to reduce the energy consumption due to decrease the energy requirement for maintaining thermal comfort by enhancing the thermal energy storage of the wall and the roof. This study deals with the numerical simulation of transient thermal behaviour of a plaster composite containing a microencapsulated phase change material (PCM) that can be embedded as a component in passive solar walls using a hybrid finite volume (FVM)/enthalpy method. First begins with the validation of our numerical model with the analytical results, we find that the results are identical, after using our model to study the thermal behaviour of the plaster /PCM composite wall. The results demonstrate in notable time shifting and reduction of the heat flux during the peak-hour time, due to PCM storage/release capacity during their melting/solidification, this good performance of thermal behavior is associated with increased thickness of wall.
Body Shape Selection of "Bono Kampar" For Urban Concept Student Car Formula to Fulfill Indonesian Energy-Saving Standards (“KMHE”) with Aerodynamic Analysis
Authors: Nazaruddin  , Syafri  , Yudi Saputra
Published: January 2021

The body shape of a vehicle and the structure need to be considered when designing a vehicle. In addition, the shape of the body tends to significantly affect the vehicle's energy use to counter aerodynamic forces due to wind loads. Therefore, this research aims to determine the body length, width, height, wheel base and ground clearance of vehicles in the selection of Bono Kampar for Urban Concept Car Formula to Fulfill Indonesia Energy-Savings Standards (“KMHE”) with Aerodynamics Analysis. The methods used to create four models of vehicle bodies are dynamic simulation on Computational Fluid Dynamic software are coefficient drag, lift and bland force. The result showed that the car body design needs to have the smallest drag coefficient. This is because when vehicles have a large drag coefficient value, it tends to greatly influence its efficiency or performance. Furthermore, this is useful for minimizing fuel usage, and in allowing the vehicle to reduce the friction force caused by air while driving. The Computational Fluid Dynamic (CFD) software is used to obtain drag coefficients, which is used in Solid works Flow Simulation. From aerodynamic simulation results on four alternative car bodies carried out in this study, the smallest Cd (Coefficient Drag) is the second car body model, which has Drag Coefficient (Cd) of 0.21 Pa.
Fluid-Structure Interaction on The Design of Fully Assembled Shell Eco-Marathon (SEM) Prototype Car
Authors: Soon Keey Tiew Hedy , Wei Lee Ming , Shyang Chang Wei , Ishak Mohammad Hafifi Hafiz , Ismail Farzad
Published: January 2021

To achieve high fuel efficiency, vehicles designs are inclined to choose lightweight materials and structures. However, these structures are generally weak, and structural integrity is a common concern. The purpose of this paper is to carry out fluid-structure interaction (FSI) study in one-way coupling analysis on a Shell Eco Marathon (SEM) prototype car which travels in a low-speed range to analyse its structural response. A new set of economical materials is proposed and analysed with the concern on self-fabrication process. The Flax fibre composite is introduced as a part of the proposed material set due to its environmental and economic advantages. The study herein is purely a numerical simulation work as a first approach to design a sustainable SEM prototype car. The fully assembled SEM prototype car was analysed with the proposed materials with ANSYS Workbench in the coupling of the fluid (ANSYS Fluent) and structural solver (ANSYS Mechanical) in a one-way FSI. Even with a thin shell design, the proposed material only experiences minimum deformations. The simulations also reveal that the maximum von-Mises stress experienced, after considered the safety factor, is still several order lower than the yield strength. This study has confirmed that the car design has fulfilled its structural requirements to operate at the design speed.
Investigation of Nano-Reinforced Lead-Free Solder During Reflow Soldering-A Molecular Dynamic Approach
Authors: Sahrudin Intan Norshalina , Abdullah Mohd Zulkifly , Abdul Aziz Mohd Sharizal , Rusdi Mohd Syakirin , Mohd Salleh Mohd Arif Anuar
Published: January 2021

The reinforcement of nanoparticles into the lead-free solder is proved to give good increment in the result of the importance solder properties which includes wetting properties and mechanical properties. This study proposed the new simulation method for the nano-reinforced solder to investigate the complexity and atomic behaviour briefly. The objective of this study is to clearly show the movement of the reinforced nanoparticles in the solder during the reflow soldering process via molecular dynamics (MD) simulation. In this work, Nickel (Ni) nanoparticles will be added into the pure Tin (Sn) lead-free solder. The MD simulation of Ni-reinforced solder at the temperature of 250 OC (reflow phase) was conducted via Large-scale Atomic/Molecular Massively Parallel Simulator (LAMMPS) software. This simulation model able to track the nanoparticles movement in the solder during the reflow soldering process. The experimental procedure of 0.01 wt.% Ni nanoparticle reinforcement in Sn100C was also carried out to validate the simulation result. The synchrotron micro-XRF mapping showed the Ni element was agglomerated and thus validated the simulation result. The measured area of agglomerated Ni A in the simulation and experimental results are 1.1708 Å2 and 0.9996 Å2, respectively. Meanwhile, the result obtained for area B is 0.7696 Å2 and 0.6796 Å2, respectively. Therefore, the percentage error of simulation and experimental results for both areas of A and B is 10.82% and 13.24%, respectively.
Análisis de gestión empresarial en la comunidad indígena Guambiana del Huila, Colombia
Authors: Díaz Pascuas Juan Carlos
Published: January 2021

Las formas de producción y gestión de proyectos son medios para mejorar la calidad de vida de las comunidades. La presente investigación tuvo como objetivo identificar los factores de gestión empresarial en la comunidad indígena Guambiana, durante el período 2015-2018. El tipo de estudio fue descriptivo, bajo un paradigma mixto, con un diseño de investigación de campo en el que se empleó la encuesta como técnica de recolección de la información. Se aplicó un cuestionario en una muestra de 63 indígenas donde se relacionó sus características culturales, productivas y organizativas, así como aspectos socio-demográficos (género, edad, nivel de ingresos). Las entrevistas informales y la observación sistemática permanente fueron aspectos clave en la ejecución de la presente investigación. Los resultados identificaron que la comunidad indígena no acceden a recursos financieros externos por falta de conocimientos en formulación y gestión de proyectos. Se concluyó que la baja calidad de vida de los guambianos está relacionada por la escasa gestión empresarial en entidades públicas y privadas.
Gestión universitaria ante el virus Covid-19: análisis de un caso español
Authors: Barquero-Cabrero José-Daniel , Barceló-Sánchez Juan-Manuel , López-Martín José-Antonio , Cabezuelo-Lorenzo Francisco
Published: January 2021

En contextos de crisis, la universidad debe enfrentarse a nuevos retos que conducen a la transformación de un nuevo modelo educativo, es por esta razón que la investigación a desarrollar busca analizar las recomendaciones de la Conferencia de Rectores de Universidades de España (CRUE) y su aplicación en los centros universitarios, enmarcado en la crisis que ha generado la pandemia del Covid-19. Para lograr el objetivo planteado, el trabajo se basó en el análisis y estudio de un caso real, con apoyo en la metodología del caso (case-study) centrado en ESERP Business and Law School (España). Como resultados se obtuvo la evidencia de problemas en modelo educativo que surge de la denominada “nueva realidad” de la educación en la era post-Covid. Obteniendo como reflexión que implementar un nuevo modelo exige por parte de todos los actores involucrados cierta flexibilidad tanto en los criterios a utilizar, como en el sentido crítico sobre los mismos, pues debía ponderar la empatía recíproca entre todos los miembros de la comunidad de ESERP para poner en marcha toda la maquinaria formativa.
Biografía
Authors: Gonzalez Abraham
Published: January 2021

1.- FormaciónIngeniero Industrial (1999), con Master en Gerencia de Empresas (2005) y Doctorado en Ciencias Gerenciales (2009).  Postdoctorado en Gerencia de las Organizaciones (2017). Certificado como Auditor Interno de Calidad ISO 9001:20082.- Experiencia académicaDocente - Investigador asociado de la Universidad Militar Nueva Granada desde el 2017 a la actualidad. Docente - Investigador de UNIAGRARIA (2015 al 2017) y Director del Programa de Ingeniería Industrial. Profesor Asociado de la Universidad del Zulia - Venezuela (2009 al 2015). He guiado cursos tanto en pre como post grado en las cátedras de ingeniería de métodos, gerencia de operaciones, diseño y distribución de plantas, gerencia logística, gerencia de servicio y formulación de proyectos. En estas mismas áreas fui Profesor catedrático de la Universidad Rafael Urdaneta (2004) y de la Universidad Dr. Rafael Belloso Chacín (2003). Ocupe las funciones de Coordinador y responsable del diseño de la Maestría en Gerencia de Empresas (2009) de la Universidad Dr. José Gregorio Hernández. He sido Jefe del Departamento y de la Cátedra de Gerencia en la Facultad de Ingeniería, Programa de Ingeniería Industrial de la Universidad del Zulia (2012), así mismo ocupé el cargo de Coordinador de los Cursos de Extensión (Diplomados) de esta misma Facultad (2014). He coordinado programas de diplomados en las áreas de gerencia de operaciones y servicios. Soy investigador activo desde el 2009. Conferencista frecuentemente invitado a disertar en foros y congresos sobre temas de gestión de procesos, análisis de actividades de valor, mejoras de la productividad empresarial y proyectos sustentables. He sido director de proyectos de grado de maestría, pregrado y doctorado. 3.- Áreas de conocimiento y actuación académicaGestión de organización y operaciones. Productividad y Competitividad.   Mejoramiento de procesos. Formulación y evaluación de proyectos. Logística y cadena de suministro 4.-Líneas de investigaciónGestión logística y operaciones. Mejoramiento de procesos y creación de valor. Calidad, productividad y sustentabilidad empresarial. 5.- Proyectos de investigación liderados·  Modelo de gestión organizacional, basado en creación de valor y procesos adaptados a la concepción de sustentabilidad, para la Pequeña y Mediana Empresa Colombo - Venezolana. Año 2019·  Modelo de gestión organizacional, basado en creación de valor y procesos adaptados a la concepción de sustentabilidad. Año 2016·  Análisis de las actividades de valor en la cadena de suministro y el establecimiento de lineamientos estratégicos en el sector avícola. Año 2016     ·  Propuesta de un sistema logístico eficiente para las operaciones de almacenamiento, despacho y distribución del producto final, centrado en la gestión de calidad alimentaria - Capítulo Colombia. Año 2015
Arco aórtico derecho con arteria subclavia izquierda aberrante: Presentación de un caso [Right-sided aortic arch with aberrant left subclavian artery: Case report]
Authors: Torres Adrían , Reyna Rolando
Published: January 2021

Se presenta caso de un paciente con historia de 2 meses de evolución de presentar disfagia, astenia, debilidad generalizada y deposiciones melénicas asociado a dolor abdominal tipo cólico en mesogastrio/epigastrio no irradiado, con dispepsia ocasional exacerbado con la ingesta de alimentos. La placa de tórax revela opacidad paratraqueal derecha con ausencia del boton aórtico izquierdo, con diagnóstico probable de  masa mediastínica. La tomografía de torax contrastata muestra variante anatómica del arco aórtico de ubicación del lado derecho.

 

Abstract

We present a case of a patient with a history of 2 months of evolution of having dysphagia, asthenia, generalized weakness and melanin depositions associated with colic-like abdominal pain in non-irradiated mesogastrium / epigastrium, with occasional dyspepsia exacerbated with food intake. The Chest X rays reveals band opacity paratracheal right with absence of the left aortic button, with probable diagnostic of mediastinal mass. The thoracic contrast tomography shows an anatomical variant of the aortic arch located on the right side.
Vacunas contra COVID19. Una carrera contra el tiempo [Vaccines against COVID19. A race against time]
Authors: Sáez-Llorens Xavier
Published: January 2021

La enfermedad conocida con el nombre de COVID19 y su agente etiológico SARSCoV2 fueron identificados a finales del año 2019 en la provincia de Wuhan, China y rápidamente notificados al mundo prontamente después. La pandemia, declarada por la OMS el 11 de marzo del 2020, ha afectado a más de 40 millones de personas en todos los países del planeta y causado la muerte de más de 1 millón de individuos. Para mitigar el impacto del virus en materia sanitaria, económica o social y para alcanzar la inmunidad colectiva de la población global, es evidente que se requiere con urgencia el desarrollo de vacunas seguras y efectivas. El desarrollo de una potencial vacuna se inició desde que la secuencia genética del coronavirus estuvo disponible públicamente y ha progresado a una velocidad sin precedentes. En la actualidad, alrededor de 200 vacunas candidatas cursan etapas de investigación preclínica y más de 40 de ellas ya están siendo evaluadas en seres humanos. Los datos publicados a la fecha sugieren que varias vacunas seguras y potencialmente eficaces estarán siendo aprobadas para su uso comercial a inicios del 2021.

 

ABSTRACT

COVID19, the disease, and its etiologic agent, the SARSCoV2, were identified at the end of 2019 in the Wuhan province, China, and notified to the world promptly therefater. The pandemics, declared by the WHO on March 11, 2020, has affected more than 40 million people in every country of the planet and caused the death of more than 1 million individuals. To mitigate the impact of this virus on health, economical and social matters, and to reach the goal of collective immunity, it is evident that safe and effective vaccines are urgently needed. The development of a potential vaccine was initiated as soon as the whole genomic sequence of the coronavirus was publicly available and it has progressed at a frenetic pace. Currently, around 200 vaccine candidates undergo preclinical studies and more than 40 are already in human clinical phases. Published data up to date indicate that various safe and potentially effective vaccines will be submitted for comercial approval at the begininning of 2021.
Ebelik Alanındaki Yüksek Lisans Tezlerinin Bibliyometrik Analizi
Authors: YALNIZ DİLCEN Hacer , KANTEK Filiz
Published: January 2021

Ebelik mesleğinin gelişimi ve bilgi kütlesinin oluşturulmasında ebelik yüksek lisans programları önemli bir role sahiptir. Bu araştırmada, Türkiye’de ebelik alanında yüksek lisans tezleri ile üretilen bilgi kütlesinin özellikleri ve gelişimsel sürecinin incelenmesi amaçlanmıştır.
Bibliyometrik analiz gerçekleştirilen araştırmada 2004 ve 2016 yılları arasında ebelik anabilim dalında yürütülen 126 yüksek lisans tezi incelenmiştir. Verilerin analizinde Microsoft Excel, UCINET ve Netdraw programları kullanılmıştır.
Tezlerin %68,2’sinin (86 tez) 2012-2016 yılları arasında üretildiği ve en fazla tezin 2014 (n=28) yılında üretildiği, %65,07’sinin danışmanının doktor öğretim üyesi unvanına sahip olduğu belirlenmiştir. Tezlerin çoğunlukla tanımlayıcı araştırma tasarımına sahip olduğu, gebe örnekleminde gerçekleştirildiği, veri toplama aracı olarak ölçek ve anketlerin kullanıldığı saptanmıştır. En sık kullanılan anahtar kelimelerin “Kaygı”, “Eğitim”, “Ebeler”, “Ebelik”, “Gebelik” kelimeleri üzerinde yoğunlaştığı görülmüştür.
Yıllar içerisinde ebelik yüksek lisans tezlerinin ve ebelik bölümlerinin sayısında önemli bir artış olmuştur. Tanımlayıcı tasarıma sahip tezlerin sayısının fazla olması ve konu olarak benzer alanlarda yoğunluğunun olmaması bu alanda daha fazla araştırmaya ihtiyaç olduğunu göstermektedir. Ebelik lisansüstü programlarının sayısının artırılması ebelik bilgi kütlesinin ve akademik insan gücünün artmasını sağlayarak bu alanın gelişimine önemli katkı sağlayacaktır.
Hemşirelerin Kanser Hastalarına Yönelik Manevi Bakım Uygulamaları ve Karşılaştıkları Engeller
Authors: USLU ŞAHAN Fatma , TERZİOĞLU Füsun
Published: January 2021

Kanser gibi yaşamı tehdit eden hastalığa sahip bireylerde manevi gereksinimler soyut ve karmaşık olup ölçümü güçtür. Bu nedenle kanser hastalarında ölçümü daha kolay olan fiziksel gereksinimler öncelikle ele alınmakta, manevi gereksinimler gözden kaçabilmektedir. Araştırmada, kanser hastası ile en fazla zaman geçiren sağlık profesyonellerinden hemşirelerin manevi bakım ve uygulamaları ile manevi bakım hizmeti sunarken karşılaşabilecekleri engeller konusunda görüşlerinin belirlenmesi amaçlanmıştır.

Tanımlayıcı tipteki araştırmanın örneklemini bir üniversite hastanesinin onkoloji kliniklerinde çalışan 134 hemşire oluşturmuştur. Araştırmanın verileri yarı yapılandırılmış anket formu kullanılarak toplanmıştır.

Hemşirelerin, %69,4’ünün kendilerini manevi açıdan oldukça güçlü olarak tanımladıkları, %50,7’sinin hastalarına bazen manevi bakım uyguladıkları, %81,3’ünün, manevi bakım konusunda eğitim almadıkları saptanmıştır. Hemşireler manevi bakımda “hastalar için önemli olan manevi aktivitelerin ve inanışların desteklenmesi (%68,6)” nin hastalar için çoğu zaman uygun bir uygulama olduğunu belirtmişlerdir. Hemşireler manevi bakımda karşılaşılan en önemli engelleri; “yeterli zaman yokluğu (%94,8)”, “hasta ile manevi konuların konuşulup tartışılabileceği özel mekanların yokluğu (%89,5)” ve “manevi konularda eğitim eksikliği (%83,6)” olarak belirtmişlerdir.

Onkoloji hemşirelerin mezuniyet sonrası eğitimler ile manevi bakım konusunda bilgi düzeylerinin iyileştirilmesi; manevi bakımın sadece teorik eğitim ile kalmaması, hastaların gereksinimleri doğrultusunda manevi bakım uygulamalarının sıklığının arttırılması önerilmektedir.
Programming Of Energy Metabolism In Prostate Carcinoma: In Silico Analysis
Authors: ERCIN Mustafa Emre , ŞİMŞEK Ender
Published: January 2021

Prostate carcinoma is known to be a hypoxic and lipogenic solid tumor, exhibiting a remarkable oncogenic modulated metabolic programming. Increasing intake of glucose and aerobic glycolysis, called the Warburg effect, are main metabolic changes in hypoxic tumors. Protein,nucleid acid , and lipid biosynthesis are the other metabolic processes associated with cancer metabolic rewiring. In addition to “Warburg effect” in prostate carcinoma, fatty acids, glutamine, and mitochondrial oxidative phosphorylation in alternative metabolic pathways are considered main contributors to tumorigenesis. The aim of this study is to investigate reprogramming of energy metabolism in well and poorly differentiated prostate carcinomas with seminal vesical invasion. The GSE32448 gene’s microarray data were downloaded from the "Gene Expression OmniBus". Differences in gene expression levels were generated by re-analyzing the mRNA transcripts of tissues obtained from 40 patients specimens. "Biobase", "Limma" and "Geoquery" libraries were obtained with bioinformatics analysis using R program. Statistically significant differences were found in genes related to fatty acid metabolism. Increased awareness of the role of lipid metabolism in prostate cancer can lead to developing better treatment strategies against this malignancy.
Obezite Yönetiminde Sağlık İnanç Modelini Kullanma ve Hemşirenin Rolü
Authors: YARALI Süheyla , HACIALİOĞLU Nazli
Published: January 2021

Obezite gelişmiş ve gelişmekte olan ülkelerde sıklığı gittikçe artan önemli bir sağlık sorunudur. Sık görülmesinin yanında hipertansiyon ve diyabet gibi fiziksel hastalıklara; depresyon ve anksiyete gibi psikolojik sorunlara neden olabilmekte; hastalık ve ölüm oranlarını artırarak yaşam kalitesini ve süresini olumsuz yönde etkilemektedir. Obezite hem neden olduğu ölümler hem de kronik hastalık olması nedeniyle iş gücünde azalma ve sağlık harcamalarında artışa neden olarak ülke ekonomisini etkilemektedir. Günümüzde obeziteye ilişkin riskleri azaltmada obezite yönetiminin gerekli olduğu vurgulanmaktadır. Obezite yönetiminde öncelikle yaşam tarzı değişikliklerinin uygulanması önerilmektedir. Uygun yaşam tarzı değişikliklerini düzenlemede hemşirenin eğitici rolü önemlidir. Eğitimlerin etkili olması için eğitim stratejileri yanında eğitime rehberlik edecek nitelikli bakım modellerinin kullanılması gereklidir. Sağlık inanç modeli, olumsuz yaşam tarzlarını değiştirmede kullanılan etkin bir rehber olarak açıklanmaktadır. Bu makalede; obezite yönetiminde “Sağlık İnanç Modeli”nin kullanımının önemi ve hemşirenin rolü vurgulanmıştır.
Improved Mean Shift Algorithm for Maximizing Clustering Accuracy
Authors: Bepery Chinmay , Bhadra Shaneworn , Rahman Md. Mahbubur , Sarkar Mihir Kanti , Hossain Mohammad Jamal
Published: January 2021

Clustering is a machine learning method that can group similar data points. Mean Shift (MS) is a fixed window-based clustering algorithm, which calculates the number of clusters automatically but cannot guarantee the convergence of the algorithm. The main drawback of the Mean Shift Algorithm is that the algorithm requires to set a stopping criterion (threshold point) otherwise all clusters move towards one cluster and fixed bandwidth is used here. It cannot define the upper bound of iteration numbers and need to set the iteration numbers. This paper proposed a new Mean Shift Algorithm, called Improved Mean Shift (IMS) algorithm, which overcomes the all defined pitfalls of Mean Shift Algorithm. The IMS process KD-tree data structure was used to sort the dataset and all data points as initial cluster centroids without a random selection of initial centroids. In each iteration, it shifts the variable bandwidth sliding window to the actual data point nearest to the mean using k-nearest neighbours (kNN) algorithm and finds the number of clusters automatically. Also, this paper handles the missing values using Mean Imputation (MI). The IMS algorithm produces better results than the Mean Shift Algorithm on both synthetic and real datasets.