bluuebunny/crossref_metadata_2025 huggingface dataset:
Feasibility Analysis of Cassava Farming Income in Mojo Village, Cluwak Sub-District Pati District Central Java
Authors: Tresnanto Yohanes Wisnu , Nuswantara Bayu
Published: August 2021

The research objective was to obtain an overview of farming costs and revenue and analyze the feasibility of cassava farming income in Mojo Village. The research was conducted from March 2019 to April 2019. The type of research was descriptive quantitative. The sampling technique used is a simple random sampling technique to determine the number of samples using the Slovin formula with an error rate of 10% with a sample of 53 farmers as respondents. Data analysis techniques include cost analysis, revenue analysis, and business feasibility analysis R/C Ratio and Break-Even Point. Data types use primary and secondary data with data collection techniques using interviews, observation, questionnaires, and literature study. The results showed that the total cost was IDR10.836.545, revenue was IDR39.865.508, and income was IDR29.028.963 per hectare in 1 planting season. The feasibility of cassava farming is based on the Revenue Cost Ratio (R/C) of 3.68, which means that cassava farming is feasible to be implemented. The Break-Even Point shows that the production BEP is 8.014 kg, the price BEP is IDR383. In comparison, the average production of cassava farming in Mojo Village is 28.424 kg, with an average price per kg of IDR1.403, more significant than the calculated value. BEP for production and BEP for a price indicate that cassava farming is feasible to be implemented.
MATHEMATICAL MODELING OF RESIDUAL STRESSES IN PLASMA COATINGS TAKING INTO ACCOUNT THE PROCESS OF INCREASING LAYERS
Authors:   Samara National Research University named after Academician S.P. Korolyov, Bogdanovich V.I. , Giorbelidze M.G. ,   Samara National Research University named after Academician S.P. Korolyov, Dokukina I.A. ,   Samara National Research University named after Academician S.P. Korolyov, Surkova N.V. ,   Samara National Research University named after Academician S.P. Korolyov
Published: August 2021

Developed a mathematical model for determining residual stresses with increasing plasma coatings, taking into account the stresses arising upon cooling of the material from the final temperature to ambient temperature; tension that arises when removing the fastening devices and tension that existed in the substrate before spraying. The developed mathematical models are adapted for the most common cases of fixing the base used in the practice of coating. Experimental studies of residual stresses were carried out, which showed good convergence with the values of residual stresses obtained theoretically.
CONTROL OF GEOMETRIC PARAMETERS OF SLOTS FOR HIGH PRECISION INSTALLATION INSTRUMENTS
Authors:   JSC SRC «Progress», Efremkin O.S. , Shaposhnikov S.N. ,   JSC SRC «Progress»
Published: August 2021

The article discusses the materials for creating a methodology for determining the angular positions of slots for high-precision devices using a laser measuring system, describes the main measuring instruments, defines a methodological approach, the composition of equipment and the sequence of work performed.
RESEARCH OF USING UNCLAIMED NATURAL DIAMOND POWDERS ON THE PROSPECTS
Authors:   North-Eastern Federal University named after M.K. Ammosov,, Safonova M.N. , Olesova O.S. ,   Yakutsk Agricultural College
Published: August 2021

The processing of industrial diamonds is reduced to the extraction of conditioned powders of various grain sizes from them. At present the depth of such processing is limited to the fine-grained micron and submicron powders; as a result, which fall into the waste category. In reality, these are complete and usable diamond powders. However, due to the above mentioned reasons, they may be unclaimed for an indefinite period of time at the moment, and moreover with a tendency to accumulate. The article deals with the problem of using unclaimed natural diamond powders and explores the prospects for their use.
ANALYSIS OF PROBLEMS AND IDENTIFICATION OF WAYS OF DEVELOPMENT OF PRODUCTION SYSTEMS FOR AUTOMOTIVE PRODUCTION DOI: 10.37313/1990-5378-2020-22-6-57-63
Authors:   Samara Technical University, Kozlovsky V.N. , Blagoveshchensky D.I. ,   Samara Technical University, Aydarov D.V. ,   Samara Technical University, Panyukov D.I. ,   Samara Technical University
Published: August 2021

The article presents the results of the analysis of the current problems of the existing production systems of automobile production of domestic automakers. A comprehensive approach is proposed to overcome the identified problems, taking into account the best practices of world leaders in the industry.
PRINCIPLES OF CONSTRUCTING ALGORITHMIC SUPPORT FOR AN INTELLECTUALIZED CONTROL SYSTEM FOR SPACE FLIGHT CONTROL
Authors:   S.P. Korolev Rocket and Space Public Corporation Energia, Soloviev S.V.
Published: August 2021

The article examines the issue of forming the principles of constructing algorithmic support for an intellectualized control system during space flight control. The features of the application of "classical" stochastic models for spacecraft (SC) are briefly analyzed. It is proposed to compensate for these shortcomings by introducing an intellectualized control system. On the basis of modern approaches, it is proposed to use digital intelligent models of spacecraft functioning on the basis of technological knowledge, which is telemetric information. An approach based on the development and integration of methods combining intelligent identification of individual components of a spacecraft using various analysis algorithms for imitating the functioning of the spacecraft as a whole is presented. The basic requirements for intelligent control systems and the tasks to be solved are formulated, taking into account the peculiarities of the space flight control process. The principle of the control technique using a digital twin created on the basis of real data of the spacecraft functioning is enlarged.
APPLYING THE CONVERSATION ANALYSIS METHOD TO ASSESS COMMUNITY ACTIVITY AND SENTIMENT
Authors:   Samara National Research University, Rytsarev I.A. ,   Image Processing Systems Institute of RAS - Branch of the FSRC "Crystallography and Photonics" RAS, Kupriyanov A.V. ,   Samara National Research University,   Image Processing Systems Institute of RAS - Branch of the FSRC "Crystallography and Photonics" RAS, Litvinov V.G. ,   Samara National Research University
Published: August 2021

In this paper, it is proposed to use the method of conversion analysis to analyze the activity and sentiment of communities. The research data was collected from social media. The proven technology for analyzing the activity of network groups on electoral topics was used in practice. The results show that in active groups, there is a strong relationship between news and thematic comments associated with it.
SERGEY VLADIMIROVICH SAXONOV - STROKES TO THE BIOGRAPHY
Authors:   Institute of the Volga Basin of the Russian Academy of Sciences – Branch of Samara Federal Research Center of the Russian Academy of Sciences, Fayzulin A.I.
Published: August 2021

The article considers the main moments of life and stages of formation of the Russian naturalist, ecologist, botanist, organizer and historian of science, Doctor of Biological Sciences, Professor, Honored Scientist of the Russian Federation Sergey Vladimirovich Saksonov
A Mobile Green Power Source for Emergency and Special Purposes Using Solar and Wind Power
Authors: Chen Sara , Gonzalez Corinna , Diaz Cristian , Leung Kenneth , Liu Anthony , Lopez Nate , Nguyen Nhat , Phung Anh , Uzueta Andrew , Wooden Knikolas , Le Ha Thu
Published: August 2021

In this project, a mobile, renewable, and versatile generation unit is designed. It utilizes solar and wind energy resources which make it usable in any location. The power source can effectively support emergency situations, such as hurricane, wildfire, earthquake, as well as special events such as remote training. It can provide at least 3.7kW to run multiple tools used during search and rescue situations. Specifically, the unit has seven 5-VDC 2-A DC/USB outlets, two AC 120-V 15-A outlets, and four 6-W LED lights which serve diverse equipment and devices. Its battery system could potentially run on its own for 12 hours when supplying 1kW. The unit is housed in a normally-sized trailer with the total weight of around 10,000 lbs. It is very versatile as it can be towed by any popular truck to diverse locations. Simulation has shown that the unit works properly and all design expectations have been met. The use of this green power source will help save lives while keeping our air clean
Solar-Powered Convenient Charging Station for Mobile Devices with Wireless Charging Capability
Authors: Tran Bang , Ovalle Joshua , Molina Karl , Molina Ruben , Le Ha Thu
Published: August 2021

Mobile devices, such as smartphones, tablets, laptops, and music players, have been increasingly popular. There is a strong demand for charging stations for these devices, especially in public places, such as bus stops, parks, beaches, schools, hospitals, and playgrounds. This project designs a convenient charging station for the mobile devices. It is renewable and supportive for diverse charging needs. The system key design parameters are: 200-W solar panel, 12-V 900-Wh deep-cycle lead acid battery, 300-W 120-VAC pure sine-wave inverter, 8 outlets (2 wireless, 4 DC USB and 2 AC). It aims to supply an average load of 175Wh. A prototype of the station is built and tested. The testing results show that the station works properly. The control system switches the outlets on and off accurately based on the battery available energy. On a sunny day, with the solar panel and the battery operational, the system can support a full load of 150Wh until the sun is gone. When operating without the solar panel using the fully-charged battery, the system can last at least 1.5 hours. The station can serve as a convenient power source. It helps promote the use of solar energy that is beneficial to the environment
An homage to the research legacy of Dr. Gregory Schraw: the theory of self-regulated learning
Authors: Gutiérrez de Blume Antonio P.
Published: August 2021

Gregory “Gregg” Schraw was an international scholar interested in investigating psychological phenomena related to self-regulated learning theory. This reflection article summarizes Gregg’s research trajectory about the three main components of self-regulated learning: cognition, motivation, and metacognition, while presenting the impact of his trajectory regarding some of the most relevant works of his legacy, and his contributions to the development of self-regulated learning theory and metacognition. The contributions of Gregg’s work to theoretical and applied contexts in his field of research are discussed. The reflection concludes with some implications on Gregg's work and legacy and with the presentation of some of the gaps or gaps that he, as a visionary, considered for the field of study and that in his research program he wanted to pursue in his future work.
Antecedentes, desarrollo y consolidación de la psicología cognitiva: un análisis histórico
Authors: Arias Gallegos Walter Lizandro
Published: August 2021

La psicología científica ha visto surgir desde su fundación, una diversidad de paradigmas que han enfatizado ciertos aspectos de la psique humana. El movimiento cognitivo, es una de las más importantes corrientes psicológicas, dado el alcance global de sus postulados, y sus vinculaciones intra e interdisciplinarias, muy particularmente con la filosofía, las neurociencias y la cibernética. En el presente artículo se revisan y estudian los antecedentes históricos de la psicología cognitiva, principalmente aquellos que tienen que ver con la filosofía de la mente, la antropología cultural, la psicolingüística chomskiana, las neurociencias cognitivas y las ciencias de la computación. La psicología cognitiva comprende además ciertos autores, teorías y escuelas precursoras como Hermann Ebbinghaus, Alfred Binet, la teoría del desarrollo psicogenético de Piaget, la teoría sociocultural de Vigotsky y la escuela de Wuzburgo. En torno a todos estos aspectos, se realiza un análisis de la contribución de estas disciplinas en el proceso de institucionalización de la ciencia cognitiva durante mediados del siglo XX, lo cual comprende la fundación de sociedades, centros de investigación, la publicación de libros y revistas especializadas, y muy particularmente, la organización de eventos científicos como el Simposio Hixon y el Simposio de la Teoría de la Información de 1956, considerado como el evento fundacional de la psicología cognitiva. Se destaca cómo la psicología ha ido cambiando de diversos paradigmas hacia uno cada vez más cognitivo, resaltándose los autores y obras más representativas en la historiografía psicológica contemporánea.
Actio Pauliana Sebagai Upaya Kurator Dalam Kepailitan Berdasarkan Putusan Nomor 61 Pk/Pdt.Sus-Pailit/2015
Authors: Haryanto Hendra , Calvin John
Published: August 2021

Actio pauliana merupakan upaya Kurator untuk melakukan pembatalan terhadap perbuatan yang dilakukan oleh debitur pailit. Dalam hal ini yang diteliti yaitu actio pauliana yang diterapkan dalam Putusan Nomor 61 PK/Pdt.Sus-Pailit/2015 (PT. Metro Batavia) atau yang dikenal dengan Batavia Air, selain itu diteliti juga pertimbangan hakim yang menyatakan bahwa Debitur Pailit telah mengetahui perbuatannya. Penelitian ini bertujuan untuk menjelaskan penerapan actio pauliana oleh kurator dalam studi kasus PT. Metro Batavia. Metode penelitian yang dipakai dalam penulisan ini ialah metode penelitian normatif, dengan menggunakan pendekatan kasus actio pauliana Batavia Air. Analisis dari permasalahan ini yaitu bagaimana actio pauliana dapat diupayakan oleh kurator dalam hal terjadi kasus perbuatan dengan itikad tidak baik yang dilakukan oleh debitur pailit dan permasalahan selanjutnya yaitu bagaimana pertimbangan hakim yang menyatakan bahwa debitur pailit telah mengetahui perbuatannya, bahwa perbuatannya tersebut telah melawan hukum, tidak memiliki moral dan tidak memberikan keadilan bagi kreditor dan kurator. Saran dalam penelitian ini yaitu hakim dalam pengadilan niaga lebih ditingkatkan pemahamannya dalam menangani perkara kepailitan yang berkaitan dengan actio pauliana.
ABNORMAL NAILFOLD VIDEOCAPILLAROSCOPY IN PATIENTS WITH ANTISYNTHETASE SYNDROME: CASE REPORTS AND REVIEW OF THE LITERATURE
Authors:   Rheumatology 2 Department, Clinical Rehabilitation Hospital, Iasi, Pomirleanu Cristina ,   Grigore T. Popa University of Medicine and Pharmacy, Iasi, Strugariu Georgiana ,   Rheumatology 2 Department, Clinical Rehabilitation Hospital, Iasi, Resmerita Iulian ,   Rheumatology 2 Department, Clinical Rehabilitation Hospital, Iasi, Axinte Andreea ,   Rheumatology 2 Department, Clinical Rehabilitation Hospital, Iasi, Ancuta Codrina ,   Rheumatology 2 Department, Clinical Rehabilitation Hospital, Iasi,   Grigore T. Popa University of Medicine and Pharmacy, Iasi
Published: August 2021

Classified as a distinct subset of idiopathic inflammatory myopathies, anti-synthetase syndrome is an orphan autoimmune disease characterized by the presence of anti-aminoacyl-tRNA synthetase antibodies associated with a spectrum of clinical features including interstitial lung disease, myositis or dermatomyositis, chronic polyarthritis, fever, mechanic‘s hands and Raynaud‘s phenomenon. The main objective of our study was to evaluate nailfold capillary abnormalities in a series of cases diagnosed with anti-synthetase syndrome, aiming to describe capillaroscopy findings and to identify potential relation with clinical and functional outcomes. Irrespective of clinical and serological disease subtype, significant capillaroscopic changes may help diagnosis and identify negative prognostic factors, advancing the role of routine capillaroscopy in the decisional algorithm of anti-synthetase syndrome. Nailfold videocapillaroscopy is able to provide valuable information in patients with anti-tRNA synthetase myositis, suggesting that diffuse microangiopathy represents an early pathobiologic event.
THE EVOLUTION OF SPONDYLARTHRITIS – A THERAPEUTIC CHALLENGE
Authors:   Department of Internal Medicine and Rheumatology, Sf. Maria Clinical Hospital, Bucharest, Radu Cristina , Groseanu Maria Laura ,   Department of Internal Medicine and Rheumatology, Sf. Maria Clinical Hospital, Bucharest,   Carol Davila University of Medicine and Pharmacy, Bucharest, Romania, Ionescu Ruxandra ,   Department of Internal Medicine and Rheumatology, Sf. Maria Clinical Hospital, Bucharest,   Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
Published: August 2021

We are presenting the case of a 36 years old male diagnosed at the age of 20 with reactive arthritis and at 27 years with ankylosing spondylitis. During the course of the disease, the patient followed treatment with nonsteroidal anti-inflammatory drugs, Sulfasalazine and biological therapy. The first two anti-TNF had a very good response. During Adalimumab therapy the patient conceived a child without any teratogenic effect on it. The effect of the two anti-TNF has been long-lasting, but the effectiveness has decreased on the other two. The future of this patient lies in blocking a new molecule in ankylosing spondylitis named IL-17, so we are expecting the disease response to the new biological introduced into ankylosing spondylitis, named Secukinumab.
RECURRENT EPISODES OF FEVER AND ARTHRITIS IN AN ADULT PATIENT
Authors:   Department of Rheumatology and Internal Medicine, Sf. Maria Clinical Hospital, Bucharest, Cobilinschi Claudia , Opris Belinski Daniela ,   Department of Rheumatology and Internal Medicine, Sf. Maria Clinical Hospital, Bucharest,   Carol Davila University of Medicine and Pharmacy, Bucharest, Predeteanu Denisa ,   Department of Rheumatology and Internal Medicine, Sf. Maria Clinical Hospital, Bucharest,   Carol Davila University of Medicine and Pharmacy, Bucharest, Ionescu Ruxandra ,   Department of Rheumatology and Internal Medicine, Sf. Maria Clinical Hospital, Bucharest,   Carol Davila University of Medicine and Pharmacy, Bucharest
Published: August 2021

Familial Mediterranean Fever (FMF) is the most common condition in the group of autoinflammatory diseases. It has a relatively heterogeneous clinical display included in the Tel-Hashomer diagnostic criteria that can be further confirmed by genetic testing showing a mutation in the MEFV gene. AA Amyloidosis is the most sever complication in these patients. Colchicine is the standard treatment and/or alternative biological agents if necessary. This article aims to describe the evolution of a patient with FMF, firstly diagnosed as reactive arthritis, his clinical manifestations and therapeutic options.
COULD ANTI-SYNTHETASE SYNDROME BE A GOOD PREDICTOR FACTOR FOR INTERSTITIAL LUNG DISEASE?
Authors:   PhD student, University of Medicine and Pharmacy of Craiova, Firulescu Sineta Cristina , Ciurea Paulina Lucia ,   Department of Rheumatology, University of Medicine and Pharmacy of Craiova, Parvanescu Cristina Dorina ,   Department of Rheumatology, Emergency County Hospital Craiova, Chisalau Beatrice Andreea ,   PhD student, University of Medicine and Pharmacy of Craiova, Barbulescu Andreea Lili ,   Department of Pharmacology, University of Medicine and Pharmacy of Craiova, Criveanu Cristina ,   Department of Rheumatology, University of Medicine and Pharmacy of Craiova, Turcu-Stiolica Adina ,   Department of Pharmacoeconomics, University of Medicine and Pharmacy of Craiova, Edmee Mustafa Roxana ,   Department of Cardiology, University of Medicine and Pharmacy of Craiova, Ananu Vreju Florentin ,   Department of Rheumatology, University of Medicine and Pharmacy of Craiova
Published: August 2021

Anti-synthetase syndrome (SAS) is an autoimmune inflammatory myopathy, whose immune profile is dominated by anti-RNA synthetase antibodies (ARS), with a specific clinical phenotype. The major diagnostic criteria of SAS include the triad of myositis, arthritis and interstitial lung disease (ILD), on the background of positive anti-ARS antibodies. ILD in SAS, has a good evolution compared to the one in PM/DM, due to protective presence of anti Jo-1 antibodies.
MANAGEMENT OF KNEE RHEUMATOID ARTHRITIS WITH TOTAL KNEE ARTHROPLASTY: A SYSTEMATIC REVIEW
Authors:   Clinical Hospital for Orthopedics-Traumatology and TB osteoarticular Foisor, Bucharest, Dragosloveanu Calin , Dragosloveanu Serban ,   Clinical Hospital for Orthopedics-Traumatology and TB osteoarticular Foisor, Bucharest, Cretu Bogdan ,   Clinical Hospital for Orthopedics-Traumatology and TB osteoarticular Foisor, Bucharest
Published: August 2021

Total knee arthroplasty (TKA) in patients with rheumatoid arthritis (RA) has different features from those seen in patients with osteoarthritis. In 1970 85% of the patients undergoing TKA had rheumatoid arthritis. Nowadays less than 5% of the patients undergoing TKA have rheumatoid disease. An important reason for the marked decrease is the improvement of the medical treatment. Fewer patients now progress to permanent structural damage requiring arthroplasty. TKA in RA has management difficulties that are unique to the disease. These include ipsilateral hip involvement, bilaterality, anticoagulation needs, flexion contractures, rheumatoid cysts and possibly the need for synovectomy. Patients with rheumatoid arthritis are more vulnerable to both early and late infections. They require a prosthesis and technique that provide adequate flexion for activities of daily living. Their often-profound osteopenia can lead to intraoperative and postoperative fractures. Finally, their cervical spine and temporal-mandibular disease create challenging anesthetic considerations. Nevertheless, given these considerations and the degree of preoperative disability suffered by patients with rheumatoid arthritis, the results of surgery can be extremely dramatic and gratifying to both patient and surgeon.
MUSCULOSKELETAL ULTRASOUND ABNORMALITIES IN PATIENTS ON DIALYSIS, COMPARED TO PATIENTS WITH PRE-DIALYSIS STAGE CHRONIC KIDNEY DISEASE
Authors:   Department of Internal Medicine and Rheumatology, Sf. Maria Clinical Hospital, Bucharest, Decianu Raluca-Daniela , Bojinca Mihai ,   Department of Internal Medicine and Rheumatology, Ion Cantacuzino Clinical Hospital, Bucharest,   Carol Davila University of Medicine and Pharmacy, Bucharest, Capusa Cristina ,   Department of Nephrology, Carol Davila Clinical Hospital, Bucharest,   Carol Davila University of Medicine and Pharmacy, Bucharest, Bojinca Violeta-Claudia ,   Department of Internal Medicine and Rheumatology, Sf. Maria Clinical Hospital, Bucharest,   Carol Davila University of Medicine and Pharmacy, Bucharest
Published: August 2021

Background. The musculoskeletal system is deeply involved in patients with CKD on dialysis. The studies that were done by now with regarding this subject mostly aimed the bone metabolism.So far, there is few data on the subject concerning the articular and abarticular abnormalities in dialysed patients(1). Objectives. To indentify the musculoskeletal soft tissue abnormities associated to dialysis and to evaluate whether or not they are more frequent. Also, we set ourselves to point out the importance of detecting these anomalies early in the evolution, in order to preserve the joint function and the quality of life, in a category of patients already severely affected. Materials and methods. This is a prospective study, ran on a period of 4 months. We included 55 patients ( 32 in the study group – on dialysis, 23 in the control group – late stage pre-dialysis chronic kidney disease). For each patient, we evaluated 68 joints using ultrasonography. Also, a visual analogue scale for pain was applied for each patient. Results. The findings vary from median nerve entrapment and tendon calcifications, to usual degenerative abnormalities, synovitis and tenosynovitis. The type of abnormalities does not vary between the two groups, but the percent of the affected patients was much higher in the study group. Conclusions. A great number of patients from the study group presented important articular and mostly abarticular abnormalities, sometimes with no correlation with the algofunctional symptoms.
DIGITAL ULCERS AND MULTIPLE AMPUTATIONS IN A SYSTEMIC SCLEROSIS PATIENT
Authors:   Department of Internal Medicine and Rheumatology, Sf. Maria Clinical Hospital, Bucharest, Groseanu Laura ,   Carol Davila University of Medicine and Pharmacy, Bucharest, Cambur Ina ,   Department of Internal Medicine and Rheumatology, Sf. Maria Clinical Hospital, Bucharest, Balanescu Andra ,   Department of Internal Medicine and Rheumatology, Sf. Maria Clinical Hospital, Bucharest,   Carol Davila University of Medicine and Pharmacy, Bucharest, Ionescu Ruxandra ,   Department of Internal Medicine and Rheumatology, Sf. Maria Clinical Hospital, Bucharest,   Carol Davila University of Medicine and Pharmacy, Bucharest
Published: August 2021

We are presenting the case of a 48 years old female diagnosed at the age of 28 with diffuse cutaneous systemic sclerosis. During the course of disease, despite the vasodilatator treatments and immunosuppresion for visceral involvement, the patient developed multiple infected digital ulcers both in the upper limbs and in the lower limbs, which complicated with wet gangrene, requiring transmetatarsal amputations. At that time, a macrovascular disease or a prothrombotic condition were excluded. Patient also developed infected nondigital lower extremity ulcers, which slowly healed after Alprostadil treatment. The evolution of our patient‘s disease demonstrate that the management of scleroderma vasculopathy represent a challange and a multidisciplinary approach is needed.
Implementation of Corporate Social Responsibility Program on Community Welfare
Authors: Lather Khenu , Khlise Munnopule , Kinneth Mashue
Published: August 2021

The purpose of this research is to evaluate the impact of the execution of the Corporate Social Responsibility program on the welfare of the local community. This research technique is descriptive qualitative, and it makes use of both primary and secondary data. The findings of this research show that the implementation of the Corporate Social Responsibility (CSR) program for the benefit of the community has not been successful, which is supported by a number of impediments to the success of these programs
Barriers and Challenges in Distanced-Learning in Developing World
Authors: Dawn Ennejie , Laure Miciendily Molde
Published: August 2021

The purpose of this study is to identify the difficulties and impediments that educational institutions in underdeveloped nations confront. Distance learning is critical to sustaining education during the COVID-19 epidemic. This creates a number of difficulties when implementing remote learning. One of the difficulties encountered is a lack of contact with instructors throughout the learning process, which results in a less effective learning process.
A review on the essential oil chemical profile of Salvia genus from Iran
Authors: ASGARPANAH Jinous
Published: August 2021

Iran is one of the major centres of diversity for Salvia, with 58 species of which 25% are endemic. A literature-based survey of the chemical profile of Salvia species essential oil found in Iran was carried out. As a result, 46 species belonging to Salvia genus were identified for their essential oil composition. A concise review of the scientific literature pertaining to components of Salvia essential oils and volatile fractions is presented. The present review showed that the Iranian Salvia species have been classified into four main categories based on the GC/MS and GC-FID analyses of their essential oils. monoterpene chemotype, mono and sesquiterpene chemotype, sesquiterpene chemotype and GLV chemotype which stands for green leaf volatiles. It was indicated the most of the studied Salvia species were considered as sesquiterpene chemotype. Among the sesquiterpenes, β-caryophyllene followed by germacrene D, spathulenol and caryophyllene oxide were the most common and abundant in Persian Salvia species. The β-caryophyllene and germacrene D were reported from 27 and 22 Salvia species in Iran, respectively.
The Effect of Preoperative Nutritional Support on Postoperative Morbidity and Mortality in Patients With Gastric Cancer: A Single Center Retrospective Study
Authors: TUNCER Korhan , SERT İsmail , KİLİNC Gizem , TUĞMEN Cem , EMİROĞLU Mustafa
Published: August 2021

Aim: Weight loss and malnutrition are frequently observed in patients with gastric cancer. Therefore, nutrition is important, especially in patients with gastric cancer. In this study, we aimed to identify the effect of preoperative nutritional support on postoperative morbidity and mortality in patients with gastric cancer. Material and Method: A total of 110 patients underwent gastrectomy due to gastric cancer between December 2015 and December 2019 were retrospectively analyzed. It was determined whether the patients were given preoperative and postoperative nutritional support. Clinicopathological features and short-term results were compared. Results: Overall morbidity was 29.1% (n=32) in patients who underwent gastrectomy. It was observed that the rate of major complications increased statistically with increasing age (p<0.001). Comorbidity was also found to be a risk factor for major complications (OR 3.917, 95% CI 1.423-10.781; p=0.006). The incidence of complications increases especially in patients with a diagnosis of diabetes (OR 3.743, 95% CI 1.201-11.666; p=0.040). While anastomotic leak developed in 6.7% (n=2) of the patients who were taken preoperative nutrition, anastomotic leak developed in 10% (n=8) of the patients who were not taken nutritional support (p=0.588). Likewise, the relationship between the postoperative length of stay, postoperative complications and mortality of patients receiving preoperative nutritional support could not been proven. Conclusion: The present study reveals that preoperative nutrition in patients with gastric cancer was not associated with improved morbidity and mortality rates. Large, multicenter prospective studies focusing on preoperative nutritional support are needed to uncover the exact relation of preoperative nutrition and morbidity-mortality rates in patients with gastric cancer.
Detection of Glaucoma using ORB (Oriented FAST and Rotated BRIEF) Feature Extraction
Authors: Md. Shabbir Kazi Safayet , Ahmed Md. Imteaz , Marzan Alam
Published: August 2021

This research was utilized to identify glaucoma, a type of eye illness. This endeavor necessitates the use of pictures from the fundus camera for image processing. This study reflects the effort done to detect glaucoma-affected eyes utilizing image feature extraction using Oriented FAST and Rotated BRIEF (ORB). ORB is a binary descriptor approach that is based on BRIEF and is highly fast. This technique is insensitive to picture noise and is invariant to any rotation. ORB is two orders of magnitude faster than SURF and performs similarly to SIFT. It is more efficient than other texture analysis methods. It is less computationally difficult than other approaches in the literature. This technique extracts features and detects texture by inspecting each pixel of the retina picture. It was trained on 160 fundus pictures of normal and glaucoma-affected retinas. After that, any healthy or glaucoma-affected eye may be easily recognized by obtaining an accurate eye picture. The results reveal that this technique has a precision and accuracy of more than 90%.
Physical Characterization of Serendipitously Uncovered Millimeter-wave Line-emitting Galaxies at z ∼ 2.5 behind the Local Luminous Infrared Galaxy VV 114
Authors: Mizukoshi Shoichiro , Kohno Kotaro , Egusa Fumi , Hatsukade Bunyo , Minezaki Takeo , Saito Toshiki , Tamura Yoichi , Iono Daisuke , Ueda Junko , Matsuda Yuichi , Kawabe Ryohei , Lee Minju M. , Yun Min S. , Espada Daniel
Published: August 2021

We present a detailed investigation of millimeter-wave line emitters ALMA J010748.3-173028 (ALMA-J0107a) and ALMA J010747.0-173010 (ALMA-J0107b), which were serendipitously uncovered in the background of the nearby galaxy VV 114 with spectral scan observations at λ = 2–3 mm. Via Atacama Large Millimeter/submillimeter Array (ALMA) detection of CO(4–3), CO(3–2), and [C i](1–0) lines for both sources, their spectroscopic redshifts are unambiguously determined to be z = 2.4666 ± 0.0002 and z = 2.3100 ± 0.0002, respectively. We obtain the apparent molecular gas masses M
gas of these two line emitters from [C i] line fluxes as (11.2 ± 3.1) × 1010
M
⊙ and (4.2 ± 1.2) × 1010
M
⊙, respectively. The observed CO(4–3) velocity field of ALMA-J0107a exhibits a clear velocity gradient across the CO disk, and we find that ALMA-J0107a is characterized by an inclined rotating disk with a significant turbulence, that is, a deprojected maximum rotation velocity to velocity dispersion ratio

v

max

/

σ

v

of 1.3 ± 0.3. We find that the dynamical mass of ALMA-J0107a within the CO-emitting disk computed from the derived kinetic parameters, (1.1 ± 0.2) × 1010
M
⊙, is an order of magnitude smaller than the molecular gas mass derived from dust continuum emission, (3.2 ± 1.6) × 1011
M
⊙. We suggest this source is magnified by a gravitational lens with a magnification of μ ≳ 10, which is consistent with the measured offset from the empirical correlation between CO-line luminosity and width.
TIC 454140642: A Compact, Coplanar, Quadruple-lined Quadruple Star System Consisting of Two Eclipsing Binaries
Authors: Kostov Veselin B. , Powell Brian P. , Torres Guillermo , Borkovits Tamás , Rappaport Saul A. , Tokovinin Andrei , Zasche Petr , Anderson David , Barclay Thomas , Berlind Perry , Brown Peyton , Calkins Michael L. , Collins Karen A. , Collins Kevin I. , Conti Dennis M. , Esquerdo Gilbert A. , Hellier Coel , Jensen Eric L. N. , Kamler Jacob , Kruse Ethan , Latham David W. , Mašek Martin , Murgas Felipe , Olmschenk Greg , Orosz Jerome A. , Pál András , Palle Enric , Schwarz Richard P. , Stockdale Chris , Tamayo Daniel , Uhlař Robert , Welsh William F. , West Richard
Published: August 2021

We report the discovery of a compact, coplanar, quadruple-lined, eclipsing quadruple star system from Transiting Exoplanet Survey Satellite data, TIC 454140642, also known as TYC 0074-01254-1. The target was first detected in Sector 5 with a 30-minute cadence in full-frame images and then observed in Sector 32 with a 2-minute cadence. The light curve exhibits two sets of primary and secondary eclipses with periods of P

A
= 13.624 days (binary A) and P

B
= 10.393 days (binary B). Analysis of archival and follow-up data shows clear eclipse-timing variations and divergent radial velocities, indicating dynamical interactions between the two binaries and confirming that they form a gravitationally bound quadruple system with a 2 + 2 hierarchy. The Aa+Ab binary, Ba+Bb binary, and A-B system are aligned with respect to each other within a fraction of a degree: the respective mutual orbital inclinations are 0.°25 (A versus B), 0.°37 (A versus A-B), and 0.°47 (B versus A-B). The A-B system has an orbital period of 432 days—the second shortest of the confirmed quadruple systems—and an orbital eccentricity of 0.3.
The Diversity of Environments around Luminous Quasars at Redshift z ∼ 6
Authors: Ren Keven , Trenti Michele , Marshall Madeline A. , Di Matteo Tiziana , Ni Yueying
Published: August 2021

Significant clustering around the rarest luminous quasars is a feature predicted by dark matter theory combined with number density matching arguments. However, this expectation is not reflected by observations of quasars residing in a diverse range of environments. Here we assess the tension in the diverse clustering of visible i-band dropout galaxies around luminous z ∼ 6 quasars. Our approach uses a simple empirical method to derive the median luminosity–to–halo mass relation, L

c
(M

h
), for both quasars and galaxies under the assumption of lognormal luminosity scatter, Σ
Q
and Σ
G
. We show that higher Σ
Q
reduces the average halo mass hosting a quasar of a given luminosity, thus introducing at least a partial reversion to the mean in the number count distribution of nearby Lyman-break galaxies. We generate a large sample of mock Hubble Space Telescope fields of view centered across rare z ∼ 6 quasars by resampling pencil beams traced through the dark matter component of the BlueTides cosmological simulation. We find that diverse quasar environments are expected for Σ
Q
> 0.4, consistent with numerous observations and theoretical studies. However, we note that the average number of galaxies around the central quasar is primarily driven by galaxy evolutionary processes in neighboring halos, as embodied by our parameter Σ
G
, instead of a difference in the large-scale structure around the central quasar host, embodied by Σ
Q
. We conclude that models with Σ
G
> 0.3 are consistent with current observational constraints on high-z quasars, and that such a value is comparable to the scatter estimated from hydrodynamical simulations of galaxy formation.
Differences in the Expression of β-Catenin Nucleus/Cytoplasm Ratio e-Cadherin and n-Cadherin and Correlation of β-Catenin Cytoplasm and Cadherin in Model of Duke D Stage Colorectal Cancer Cell Line
Authors: Winarko Winarko , Rahayu Pudji , Soeatmadji Djoko , Mintaroem Karyono
Published: August 2021

BACKGROUND: β-catenin has a critical role in the homeostasis processes. Wnt/β-catenin signaling mainly involved in the modulation of cancer cell development.

AIM: This research aimed to investigate the differences of β-catenin expression observed in the form of nucleus–cytoplasm ratio, the differences of E-cadherin and N-cadherin expressions, and the correlation between N-cadherin and E-cadherin and β-catenin cytoplasm in Dukes D stage colorectal cancer (CRC), which is an advanced stage and has experienced metastasis.

MATERIALS AND METHODS: This study followed an experimental research design. The processes of culture manufacturing and subculture preparation of Dukes D stage CRC cell line model were performed before the administration of β-catenin, E-cadherin, and N-cadherin antibodies. The next process was staining using fluorescein-5-isothiocyanate and rhodamine, and observations were performed using a confocal microscope. The number of cells was counted, and the intensity of antibody expression based on the arbitrary unit was measured.

RESULTS: There was a significant difference between the expression of β-catenin nucleus and cytoplasm expression (p = 0.00), as well as between E-cadherin expression and N-cadherin expression (p = 0.00). In addition, a correlation also existed between an increased N-cadherin expression and decreased E-cadherin expression and β-catenin cytoplasm in Dukes D stage CRC, but the results were not significant (p = 0.837 and p = 0.108).

CONCLUSION: In advanced-stage CRC (Dukes D), the Wnt signaling proved to be active and was characterized by a high expression of β-catenin nucleus, it activates the target gene. Similarly, at the Dukes D stage, N-cadherin expression increased whereas E-cadherin expression decreased in which causing the translocation of β-catenin into the nucleus.
The Level of Preference of Instant Rice Bran Milk Products Innovation with Various Flavor Variants as Functional Food
Authors: Sirajuddin Saifuddin , Masni Masni , Salam Abdul
Published: August 2021

BACKGROUND: Instant rice bran milk is an innovation product made from rice bran with the addition of emulgator and flavor. AIM: The purpose of this study was to determine the level of preference of instant rice bran milk products through hedonic testing in accordance with pre-determined sensory properties and determine the acceptability of instant rice bran milk products. METHOD: The research method is an experiment with sensory tests and hedonic tests on five kinds of flavors, namely chocolate, vanilla, orange, melon and original flavors. Sensory attributes that are referred by panelists include shape, color, aroma, taste, texture, and overall impression. RESULTS: Overall panelist assessment of instant rice bran milk products shows that rice bran milk that uses melon flavoring has the highest score (3.69) and the lowest is using orange flavoring (2.63). The most preferred product is milk that uses melon flavoring. There were differences in the average results of the panelist assessment of each product based on color, odor, and overall rating (p < 0.05), while based on taste and texture, there is no difference (p > 0.05). CONCLUSION: Instant rice bran products favored both in terms of shape, color, aroma, taste, texture, and overall impression were very positively accepted as dairy product innovation and the most preferred product is one that uses melon flavorings.
Novel ex vivo screening assay to preselect farm specific pre- and probiotics in pigs
Authors: Zeilinger K. , Hellmich J. , Zentek J. , Vahjen W.
Published: August 2021

A novel rapid ex vivo assay was developed as part of a concept to determine potential tailor-made combinations of pre- and probiotics for individual farms. Sow faecal slurries from 20 German pig farms were anaerobically incubated with pre- and probiotics or their combinations together with pathogenic strains that are of interest in pig production. Aliquots of these slurries were then incubated with media containing antibiotic mixtures allowing only growth of the specific pathogen. Growth was monitored and lag time was used to determine the residual fitness of the pathogenic strains. The background growth could be inhibited for an Escherichia coli- and a Clostridium difficile- but not for a Clostridium perfringens strain. The prebiotic fructo-oligosaccharides (FOS) and its combination with probiotics reduced the residual fitness of the E. coli strain in some farms. However, notable exceptions occurred in other farms where FOS increased the fitness of the E. coli strain. Generally, combinations of pre- and probiotics did not show additive effects on fitness for E. coli but displayed farm dependent differences. The effects of pre- and probiotics on the residual fitness of the C. difficile strain were less pronounced, but distinct differences between single application of prebiotics and their combination with probiotics were observed. It was concluded that the initial composition of the microbiota in the samples was more determinative for incubations with the C. difficile strain than for incubations with the E. coli strain, as the presumed fermentation of prebiotic products showed less influence on the fitness of the C. difficile strain. Farm dependent differences were pronounced for both pathogenic strains and therefore, this novel screening method offers a promising approach for pre-selecting pre- and probiotics for individual farms. However, evaluation of farm metadata (husbandry, feed, management) will be crucial in future studies to determine a tailor-made solution for combinations of pre- and probiotics for individual farms. Also, refinement of the ex vivo assay in terms of on-farm processing of samples and validation of unambiguous growth for pathogenic strains from individual farms should be addressed.
Merit functions for absolute value variational inequalities
Authors: Batool Safeera ,   Department of Basic Sciences, University of Engineering and Technology, Taxila, Pakistan, Noor Muhammad Aslam , Noor Khalida Inayat ,   Department of Mathematics, COMSATS University Islamabad, Islamabad, Pakistan
Published: August 2021

This article deals with a class of variational inequalities known as absolute value variational inequalities. Some new merit functions for the absolute value variational inequalities are established. Using these merit functions, we derive the error bounds for absolute value variational inequalities. Since absolute value variational inequalities contain variational inequalities, absolute value complementarity problem and system of absolute value equations as special cases, the findings presented here recapture various known results in the related domains. The conclusions of this paper are more comprehensive and may provoke futuristic research.
Lie symmetries of Generalized Equal Width wave equations
Authors: Munir Mobeen ,   Department of Mathematics, University of the Punjab, New Campus Lahore, University of the Punjab, Lahore 54590, Pakistan, Athar Muhammad , Sarwar Sakhi , Shatanawi Wasfi ,   Department of Mathematics, University of Education, Lahore, Pakistan,   Department of Mathematics and General Courses, Prince Sultan University, Riyadh, Saudi Arabia,   Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 9 40402, Taiwan,   Department of Mathematics, Hashemite University, Zarqa, Jordan
Published: August 2021

Lie symmetry analysis of differential equations proves to be a powerful tool to solve or atleast to reduce the order and non-linearity of the equation. The present article focuses on the solution of Generalized Equal Width wave (GEW) equation using Lie group theory. Over the years, different solution methods have been tried for GEW but Lie symmetry analysis has not been done yet. At first, we obtain the infinitesimal generators, commutation table and adjoint table of Generalized Equal Width wave (GEW) equation. After this, we find the one dimensional optimal system. Then we reduce GEW equation into non-linear ordinary differential equation (ODE) by using the Lie symmetry method. This transformed equation can take us to the solution of GEW equation by different methods. After this, we get the travelling wave solution of GEW equation by using the Sine-cosine method. We also give graphs of some solutions of this equation.
An analysis on the trend of AIDS/HIV incidence in Chongqing and Shenzhen, China from 2005–2015 based on Age-Period-Cohort model
Authors: Liu Ying ,   School of Mathematics and Statistics, Huaiyin Normal University, Huaian, 223300, China, Ji Weidong , Yin Yi , Yang Zhengrong , Yang Shu , Zhou Chao , Cai Yongli , Wang Kai , Peng Zhihang , He Daihai , Wang Weiming ,   Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China,   Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing 211166, China,   Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China,   Chengdu university of traditional Chinese medicine, Chengdu 610075, China,   Chongqing Municipal Center for Disease Control and Prevention, Chongqing 400042, China,   College of Medical Engineering and Technology, Xinjiang Medical University, Urumqi 830011, China,   Department of Applied Mathematics, Hong Kong Polytechnic University, Hong Kong SAR, China
Published: August 2021

This paper elucidates that the AIDS/HIV incidence rate differences exist among different population and regions, especially among the old and college students. Due to the effect of age, the AIDS incidence peak in males aged 20–35 years and 50 years old both in Chongqing and Shenzhen, and the incidence rate and increasing spread in males was higher than that of females under period effect. In the local population in Chongqing and Shenzhen, the incidence rate of males in over 40, below and in the whole age groups are predicted to increase sharply in the future six years, while in females, the incidence rates among over 40-year-old and the whole age groups were predicted to increase as well. The incidence rate among homosexually transmitted patients reaches the peak in the 20–35, the incidence rate of patients transmitted through heterosexual reaches the peak around 50-year-old. Under the effect of period, AIDS/HIV incidence rate of patients transmitted through sexual routes showed an upward trend both in Chongqing and Shenzhen. The incidence rate of patients aged between 41 and 70 years old presents with an upward trend in the future six years. The results show great differences exist in the AIDS/HIV incidence between males and females, therefore it is necessary to take specific measures respectively.