bluuebunny/crossref_metadata_2025 huggingface dataset:
Predicting Trends of Coronavirus Disease (COVID19) Using SIRD and Gaussian-SIRD Models
Authors: Sedaghat Ahmad , Mosavi Amir
Published: December 2020

The eruption of COVID-19 patients in 215 countries worldwide has urged for robust predictive methods that can detect as early as possible the size and duration of the contagious disease and also providing precision predictions. In much recent literature reported on COVID-19, one or more essential parts of such investigation were missed. One of the crucial elements for any predictive method is that such methods should fit simultaneously as much data as possible; these data could be total infected cases, daily hospitalized cases, cumulative recovered cases, and deceased cases, and so on. Other crucial elements include sensitivity and precision of such predictive methods on the amount of data as the contagious disease evolved day by day. To show the importance of these aspects, we have evaluated the standard SIRD model and a newly introduced Gaussian-SIRD model on the development of COVID-19 in Kuwait. It is observed that the SIRD model quickly picks up the main trends of COVID-19 development, but the Gaussian-SIRD model provides precise prediction a longer period of time.
Recommendations for Healthy Daytime, Evening, and Night-Time Indoor Light Exposure
Authors: Brown Timothy , Brainard George , Cajochen Christian , Czeisler Charles , Hanifin John , Lockley Steven , Lucas Robert , Munch Mirjam , O'Hagan John , Peirson Stuart , Price Luke , Roenneberg Till , Schlangen Luc , Skene Debra , Spitschan Manuel , Vetter Celine , Zee Phyllis , Wright Jr. Kenneth
Published: December 2020

Ocular light exposure has important influences on human health and well-being through modulation of circadian rhythms and sleep, as well as neuroendocrine and cognitive functions. Current patterns of light exposure do not optimally engage these actions for many individuals, but advances in our understanding of the underpinning mechanisms and emerging lighting technologies now present opportunities to adjust lighting to promote optimal physical and mental health and performance. A newly developed, SI-compliant standard provides a way of quantifying the influence of light on the intrinsically photosensitive, melanopsin-expressing, retinal neurons that mediate these effects. The present report provides recommendations for lighting, based on an expert-scientific consensus and expressed according to this new measurement standard. These recommendations are supported by a comprehensive analysis of the sensitivity of human ‘non-visual’ responses to ocular light, are centred on an easily measured quantity (melanopic equivalent daylight (D65) illuminance), and provide a straightforward framework to inform lighting design and practice.
Sociodemographic Predictors of Changes in Physical Activity, Screen Time, and Sleep Among Toddlers and Pre-Schoolers in Chile During the COVID-19 Pandemic
Authors: Aguilar-Farias Nicolas , Toledo-Vargas Marcelo , Miranda-Marquez Sebastian , Cortinez-O'Ryan Andrea , Cristi-Montero Carlos , Rodriguez-Rodriguez Fernando , Martino-Fuentealba Pia , Okely Anthony D. , del Pozo Cruz Borja
Published: December 2020

The aim was to examine the sociodemographic predictors associated with changes in movement behaviours (physical activity, screen time and sleep) among toddlers and pre-schoolers during the early stages of the coronavirus disease 2019 pandemic in Chile. Caregivers of 1- to 5-year-old children completed an online survey between March 30th and April 27th, 2020. Information about the child's movement behaviours before (retrospectively) and during the pandemic, as well as family characteristics were reported. In total, 3,157 participants provided complete data (mean children age: 3.1±1.38 years). During early stages of the pandemic, time spent in physical activity decreased, recreational screen time and sleep duration increased, and sleep quality declined. Toddlers and pre-schoolers with space to play at home and living in rural areas experienced an attenuated impact of the pandemic restrictions on their physical activity levels, screen time, and sleep quality. Older children, those whose caregivers had a higher educational level, and children living in apartments had greater changes, mainly a decrease in total physical activity and increase in screen time. This study has shown the significant impact of the pandemic restrictions on movement behaviours in toddlers and pre-schoolers in Chile.
Integrins Within the Tumor Microenvironment: Biological Functions and Advances in Therapeutic Targeting
Authors: Dzobo Kevin
Published: December 2020

Many cellular functions important for tumor initiation and progression are mediated by members of the integrin family, a diverse family of cell adhesion receptors. With recent studies emphasising on the role of the tumor microenvironment (TME) in tumor initiation and progression, it is not surprising that a lot of attention is being given to integrins. Several integrins are under trial with many demonstrating appealing activity in patients with different cancers. A deeper knowledge of the functions of integrins within the tumor microenvironment is still required, and might lead to better inhibitors being discovered. Integrin expression is commonly dysregulated in many tumors with integrins playing key roles in signaling as well as promotion of tumor cell invasion and migration. This review report new data on the differential expression of integrins within solid tumors using two publicly available resources: The Cancer Genomic Atlas (TCGA) and Gene Expression Profiling Interactive Analysis (GEPIA). In this analysis, I investigated the expression of integrin alpha 2 (ITGα2), ITGα3, ITGβ4 and ITGβ6 in tumor tissues versus adjacent normal tissues. This analysis showed that integrins were differentially expressed in cervical squamous cell carcinoma (CESC), head and neck squamous cell carcinoma (HNSC), esophageal carcinoma (ESCA) and lung adenocarcinoma (LUAD). This analysis showed that ITGα2 and ITGβ6 expression are upregulated in CESC and ESCA, ITGα3 is upregulated in HNSC and ESCA whilst ITGβ4 is highly expressed in CESC, HNSC, ESCA and LUAD tumor tissues compared to adjacent normal tissues. Integrins also play a major role in adhesion of circulating tumor cells to new sites and the resulting formation of secondary tumors. Furthermore, integrins have demonstrated the ability to promoting stem cell-like properties in tumor cells as well as drug resistance. Anti-integrin therapies rely heavily on the doses or concentrations used as these determine whether the drugs act as antagonists or as integrin agonists. This review offers the latest synthesis in terms of current knowledge of integrins functions within the tumor microenvironment and potential targets for different cancers.
Development of a Resolver-to-Digital Converter Based on Second-Order Difference Generalized Predictive Control
Authors: Estrabis Thyago , Gentil Gabriel , Cordero Raymundo
Published: December 2020

High-performance motor drives that operate in harsh conditions require an accurate and robust angular position measurement to properly estimate the speed and reduce the torque ripple produced by angular estimation error. For that reason, a resolver is used in motor drives as a position sensor due to its robustness. A resolver-to-digital converter (RDC) is an observer used to get the angular position from the resolver signals. Most RDCs are based on angle tracking observers (ATOs). On the other hand, generalized predictive control (GPC) has become a powerful tool in the development of controllers and observers for industrial applications. However, no GPC-based RDC with zero steady-state error during constant speed operation was proposed. This paper proposes an RDC based on a second-order difference GPC (SOD-GPC). In SOD-GPC, the second order difference operator is applied to design a GPC model with two embedded integrators. Thus, the SOD-GPC is used to design a type-II ATO whose steady-state angle estimation error tends to zero during constant speed operation. Simulation and experimental results prove that the proposed RDC system has better performance than other approaches in literature.
Dataset for Eye-Tracking Tasks
Authors: Rakhmatulin Ildar
Published: December 2020

In recent years many different deep neural networks were developed, but due to a large number of layers in deep networks, their training requires a long time and a large number of datasets. Today is popular to use trained deep neural networks for various tasks, even for simple ones in which such deep networks are not required. The well-known deep networks such as YoloV3, SSD, etc. are intended for tracking and monitoring various objects, therefore their weights are heavy and the overall accuracy for a specific task is low. Eye-tracking tasks need to detect only one object - an iris in a given area. Therefore, it is logical to use a neural network only for this task. But the problem is the lack of suitable datasets for training the model. In the manuscript, we presented a dataset that is suitable for training custom models of convolutional neural networks for eye-tracking tasks. Using data set data, each user can independently pre-train the convolutional neural network models for eye-tracking tasks. This dataset contains annotated 10,000 eye images in an extension of 416 by 416 pixels. The table with annotation information shows the coordinates and radius of the eye for each image. This manuscript can be considered as a guide for the preparation of datasets for eye-tracking devices.
The Regulation Effect of Crude Polysaccharides from Cordyceps Militaris on Obesity Control and Gut Microbiota Community via High-Fat Diet-Fed Mice Model
Authors: Yu Minglei , Hui Nan , Hayat Kashif , Yang Xijia , Chu Shaohua , Zhang Dan , Wang Juncai , Chen Xunfeng , Ding Jina , Chi Yaowei , Zhou Pei
Published: December 2020

Administration of crude polysaccharides extract from natural product is a promising gut microbiota-targeted approach to preventing obesity and associated metabolic disorders. Dietary restrictions can change the type and number of gut bacteria, which is an important factor in delaying the onset and burden of diseases. This study aimed to investigate the effects of high-yield crude polysaccharides from Cordyceps militaris (CMP) on high-fat diet (HFD) mice model and the gut microbiota community assembly, and to identify whether selenium (Se) addition would improve CMP action mode during cultivation. We found that the CMP treatment ameliorated adipose and liver pathologic morphology and fat accumulation in obese mice, while, SeCMP intervention was not superior than CMP in body mass gain, but notably decreasing serum triglyceride level increased by HFD. The upregulated expression of gene Cyp7a1 in liver and protein UCP1 in brown adipose tissue (BAT) preliminary indicated that the effect might relate to bile acids (BAs) metabolism pathway and thermogenesis. In addition, CMP showed a drastic decrease in the gut microbes which positively correlated with dyslipidemia parameters. Our result reveals the potential of CMP to be used as functional food in the prevention of diet-induced adipose and liver steatosis, so does SeCMP has outstanding capacity of improving dyslipidemia.
Gait Pattern Recognition in Patients with Hereditary Ataxia’s Using Supervised Learning Algorithms Based on Small Subsets Smartphone Sensor Data
Authors: Acosta-Escalante Francisco Diego , Beltrán-Naturi Elías , Boll Marie Catherine , Hernández-Nolasco José-Adán
Published: December 2020

The progressive impairment analysis in gait from neurological diseases patients such as Hereditary Ataxias (HA) has been carried out using gait data collected with movement sensors. This research is focused on finding the minimum amount required of gait features to recognize efficiently and less intrusive way, HA patients based on data collected with iPhone movement sensors placed on the ankles from 14 HA patients and 14 healthy people. A twofold proposal is made , first a local minimum prominent peak criterion to find out the starting point of each stride, to get 10-stride window about which 56 spatial-temporal features are derived; second a search strategy based on Hill Climbing algorithm to reduce the number of gait features and sensors. The main results were the findings that with two gait patterns a 96% of classification accuracy was achieved by using K-Nearest Neighbors (KNN) and Multi-Layer Perceptron (MLP) algorithms, but in addition, MLP only right ankle sensor patterns were required which also allows to reduce the intrusion.
Women, Gender, and the Kirk Before the Covenant
Authors: White Jason Cameron
Published: December 2020

This article explores the ways women interacted with the Scottish kirk in the decades prior to the National Covenant of 1638, mainly focusing on urban areas especially Edinburgh and environs. The written records, especially those of the kirk session, are skewed toward punishing women who engaged in sin, especially sexual sins such as adultery and fornication. Indeed, these records show that while women’s behavior and speech was highly restricted and women were punished more frequently than men for their sexual behavior or for speaking out of turn, there were moments when women had a significant public voice, albeit one that was highly restricted and required male sanctioning. For example, women were often called on to testify before kirk sessions against those who had committed sins, even if the accused sinners were male or social superiors or both. Perhaps the most important moment where women used their male-sanctioned voice to speak out in public came at the Edinburgh Prayer Book Riots of 1637, which was led by women. This article argues that women were given the opportunity to act in public because the church had been characterized by many Scottish male preachers in gendered language – they called the church a “harlot mother” and a “whore” that needed correction. Therefore, the women of the Prayer Book Riot were sanctioned to speak out against a licentious sinner, much in the way women were called on to testify against sinners in front of kirk sessions.
John Campbell’s “Short Papers” for Lord Bute in the London Evening Post
Authors: Binney Matthew
Published: December 2020

John Campbell’s (1708-1775) biographer, Guido Abbattista, has argued that Campbell sought to publish a pamphlet, Thoughts on Public Affairs, in 1761.  However, a review of Campbell’s private correspondence in 1761 with the future prime minister, John Stuart, 3rd earl of Lord Bute (1713-1792), indicates that the historian sought not to publish a pamphlet, but newspaper articles that promote the king’s new reign and his administration.  Six of these articles have been found in the London Evening Post, and they use ideas and language from Henry St. John, 1st viscount Bolingbroke to represent George III as a Patriot King, to advance the Tory policies of Bute’s future administration, and to encourage a prospective peace to the Seven Years’ War (1756-1763).  These six, new attributions to Campbell not only expand his extensive canon, but also portray his significant role in offering the rhetoric and depicting the ideas of George III’s early reign and Bute’s ascendency to premiership.
Mechanical Calculation of Flexible Wires in the Presence of Horizontal Concentrated Loads
Authors: Bladyko Yu. V.
Published: December 2020

The linear wind load on the wires and cables acting perpendicular to the wire depends on the angle between the direction of the wind and the axis of the overhead line. In the methodology of mechanical calculation of wires and cables, it is recommended to take the wind directed at an angle of 90° to the axis of span and it is not specified which side the wind blows from. For spans of air, this is not so much significant as for switchgear spans, where the deviations of the wires depend on the direction of action of the taps to the electrical apparatus. The article discusses various options for the location of taps and their effect on the wire, as well as changing the direction of the wind. An algorithm for calculating the horizontal deviation of a flexible wire and its increase coefficients in the presence of horizontal concentrated loads due to the action of windon spacers, barriers, taps to electrical apparatuses and other structural elements of substations and overhead lines is given. In the absence of wind, horizontal concentrated loads and deviations occur when an arrangement of the taps is non-keel. The formulas for calculating the horizontal component of the load coefficient to solve the equation of state in the presence of horizontal concentrated forces acting in any direction have been derived. The results of the mechanical calculation are obtained for the cases of one and two horizontal concentrated forces, differently oriented with respect to the distributed wind load. In design practice it is recommended to take the wind flow in the direction of the action of horizontal concentrated forces, since in this case the greatest horizontal deviations and load factors are obtained. The reduction in the coefficients of the horizontal load occurs when the current lead is unloaded because of the opposite directions of the wind and horizontal concentrated forces. In the absence of wind, it is proposed to use the formulas for calculating horizontal deviations and load after finding the product of the coefficient of increase in horizontal deviations and the horizontal component of the coefficient of load per linear load.
The Borehole Water Intakes Mathematical Models with a Branched and Circular Connection Schemes for Prefabricated Water Conduits
Authors: Veremenyuk V. V. , Ivashechkin V. V. , Krytskaya V. I.
Published: December 2020

Borehole water intakes of underground water are widely used for water supply of agricultural towns, urban settlements, small and large cities and megacities. The number of consumers in these localities determines the number of water intakes, the number of wells, their productivity, location and connection to the prefabricated water conduits. Due to the increase in the use of underground water, the existing water intakes are being reconstructed and expanded. These works are accompanied by grouting of failed wells, their re-drilling, drilling of additional wells, re-laying of old and laying of new prefabricated water conduits. All this causes the complexity of the configuration of prefabricated water conduits due to the construction of jumpers and rings, the emergence of new wells with connection lines. Under the new conditions, in order to properly develop water intake operating modes which meet the minimum energy consumption for lifting and delivering a required volume of water to the collection-and-control tanks, to accurately choose the appropriate water lifting equipment in wells, to develop measures for intensifying water intake alongside with a forecast of their efficiency and to optimize the operation of the water intake, it is necessary to create its mathematical model that allows performing complex calculations. Water intakes with ramified prefabricated water conduits, as well as with an area scheme of the location of wells and a ring scheme of the connection of prefabricated water conduits are the most difficult object for mathematical modeling. The methods of calculating such water intakes are not sufficiently reflected in the literature, and there are no specific examples of calculation. The present article aims to clarify the methodology for calculating borehole water intakes with ramified prefabricated water conduits and with a ring scheme of their connection.
Repurposing of Berbamine Hydrochloride to Inhibit Ebola Virus by Targeting Viral Glycoprotein
Authors: Cen Shan , Yi Dongrong , Li Quanjie , Qiu Xiangguo , Wang Han , Liu Zhenlong , He Shihua , Zhu Wenjun , Lv Kai Lv , Chi Xiangyang , Ma Ling , Wang Yujia , Wang Jing , Zhang Yongxin , Zeng Cong , Liu Mingliang , Liu Shanlv , Liang Chen , Li Xiaoyu , Banadyga Logan , Shi Yi , Gao George Fu , Lin Rongtuan
Published: December 2020

Ebola virus (EBOV) infection leads to staggeringly high mortality rates. Effective and low-cost treatments are urgently needed to control frequent EBOV outbreaks in Africa. In this study, we report that a natural compound called berbamine hydrochloride strongly inhibits EBOV replication in vitro and in vivo. Our work further showed that berbamine hydrochloride acts by direct binding to the cleaved EBOV glycoprotein (GPcl), disrupting GPcl interaction with viral receptor NPC1, thus blocking the fusion of viral and cellular membranes. Our data support the probability of developing anti-EBOV small molecule drugs by targeting viral GPcl. More importantly, since berbamine hydrochloride has been used in clinic to treat leukopenia, it holds great promise of being quickly repurposed as an anti-EBOV drug.
Violence Against Frontline Emergency Nurses During Pandemic of COVID-19 in Guilan: A Cross-Sectional Study
Authors: Ghanbari Atefeh , Pouy Somaye , Panahi Latif , Khorasgani Abolfazl Etebarian , Hasandoost Fateme
Published: December 2020

BackgroundViolence in the workplace is one of the most important risk factors worldwide. Nurses are always exposed to all kinds of violence due to their presence and activity in medical centers and direct contact with patients and their companions, as well as exposure to various stressors. The aim of this study was to determine the violence against nurses working in Razi educational and medical center in Rasht, Guilan.MethodsThe present study was an analytical cross-sectional study that was performed on 112 nurses working in Razi educational and medical centers in Rasht by convenience sampling method. The instrument used includes a questionnaire to assess workplace violence in medical settings, which has been used in several Iranian studies and has been psychometric assessed by Najafi et al, In Iran. After collecting the data and entering into the SPSS software version 22, they will be evaluated through descriptive and inferential statistical tests (Chi-square, independent t-test and Fisher's exact test). The level of significance was considered as P<0.05.ResultsThe findings of this study showed that 11.1% of nurses experienced physical violence and 55.7% of them experienced verbal violence. Verbal violence is often caused by the patient's companions and physical violence is often caused by the patient, and in the majority of cases, those who did not report the violence attributed it to the uselessness of the report. In addition, the findings showed that there is a statistically significant relationship between education level and verbal violence (p = 0.02) and between work status (p = 0.02) and marital status (p = 0.02) with physical violence.ConclusionThe results of the study show that during the pandemic of COVID-19, verbal and physical violence for nurses occurred in several occasions, which requires the authorities to take effective measures to reduce the incidence of violence in hospitals.
INVESTIGATION OF CHANGING PHYTIC ACID IN LEGUMINOUS SEEDS DEPENDING ON SOAKING AND SPROUTING CONDITIONS
Authors: Biletska Yana , Krivtsova Anna
Published: December 2020

The results of studying changes of phytic acid in seeds of soya of “Diamond” variety and ones of chick-pea of “Krasnokutsky – 195” depending on seed soaking and sprouting conditions are presented. The content of phytic acid and changes of phytic globoloids in native soya and chick-pea seeds, sprouted in water, sprouted in the solution of mineral salts, preliminarily washed by the solution of lemon acid (C6Н8О7) were studied. The research topicality is conditioned by the necessity to develop food technologies using vegetable protein, which agent is soya and chick-pea, and to develop technological methods, favoring phytic acid inactivation. As a result of the study, it has been established, that a decrease of the phytic acid content in soya and chick-pea seeds is influenced by the sprouting process, and seeds washing by C6Н8О7 solution (pH – 3.5) is a catalyst of these processes.   Soya seeds, sprouted in the potassium iodide solution (PI), and chick-pea seeds, sprouted in the sodium hydroselenite (NaHSeO3), preliminarily washed by C6Н8О7 solution (pH – 3.5), have less content of phytic acid, comparing with other samples.    The phytic acid content decrease has been proved by a phytic globoloid decrease. It has been established, that the least diameter of a phytic globoloid is inherent to samples of soya, sprouted in PI solution and washed by C6Н8О7 solution (pH – 3.5), – 3.2 mcm, and a sample of chick-pea seeds, sprouted in NaHSeO3 solution, washed by C6Н8О7 solution (pH – 3.5) – 3.0 mcm. An undesirable “pea” smell also disappears. The established regularities are important for scientists because they allow to widen the assortment of products with vegetable protein, safe for the human organism
INVESTIGATION OF POTATO STORAGE QUALITY DEPENDING ON VARIETY PECULIARITIES
Authors: Pusik Ludmila , Pusik Vlаdimir , Postnov Gennadii , Safronska Iryna , Lyubymova Nina , Sukhova Galyna , Ilina Nataliia , Hrynova Yana
Published: December 2020

The aim of the research was to analyze an influence of variety peculiarities, different ripeness groups of potato of Dutch selection on storage quality. It has been established, that the output of commodity products in early varieties is in average 88.22±1.53 %, in middle-ripening ones – 96.87±1.09. Among the group of early-ripening varieties, there must be separated Kristina with the output of commodity products at the end of storage as 90.15 %. The lowest output of commodity products is in the variety of Tornado – 87.09. The variation coefficient of the commodity products output is 1.9 %, that is the commodity products output varies little. In the group of middle-ripening variety, higher storage quality was observed in varieties Elekta and Setanta. The commodity products output was 92.97 and 92.2 9 % respectively. Natural mass losses for the period of storage in tubers of all varieties were in average 4.2 %, among them 72.9 % at the expanse of moisture evaporation, and 27.1 % – at the expanse of breathing. In the group of early varieties, mass losses varied from 4.1 % in the variety Kristina to 5.1 % in the variety Banda. Variation coefficient 7.4 % testifies to the small fluctuation of mass losses in the studied potato varieties. In the group of middle-ripening potato varieties, mass losses varied with the middle force, variation coefficient 19.5 %. The lower mass loss was observed in the potato variety Elekta as 3.28 %. Total losses for 6.5 months of storage were 11.78±1.53 in potatoes of the early varieties and 7.91±1.09 in the middle-ripening potato varieties. Losses were distributed in such a way: in the early varieties 39.6 % are natural losses, 34.4 – technical spoilage and 26 % – absolute spoilage. In the group of middle-ripening potato varieties there was observed the ratio of typical and total losses: natural losses were 47.3 %, technical spoilage 32.0 %, absolute spoilage 20.7 %
DEVELOPMENT OF A NEW METHOD OF PRODUCTION OF PROTEIN VEGETABLE PLANT NANO ADDITIVES USING PAROTHERMOMECHANODESTRUCTION PROCESSES
Authors: Pogarskaya Viktoriya , Pavlyuk Raisa , Kotuyk Tatyana , Yurieva Olga , Maksymova Nadiya
Published: December 2020

The aim of research is to develop a new method for the production of protein plant nanoadditives from dry chickpea in the form of nanopowders and nanopastes using the processes of steam thermo-mechanical destruction, leading to a high degree of mechanical destruction of biopolymers in separate constituent monomers, without destroying the latter. The new method is based on the use as an innovation of a complex effect on raw materials of steam-thermal treatment in modern steam-thermal devices (at a temperature of +70 °C) and non-enzymatic catalysis, which occurs when using fine grinding. The proposed method makes it possible to more fully reveal the biological potential of plant raw materials and transform hardly soluble, indigestible by the human body components of raw materials (in particular, cellulose, pectin substances, proteins and their nanocomplex and nanoassociates) into components that are easily absorbed by the body. The method makes it possible to more completely remove from the raw materials inactive bound forms of individual monomers of biopolymers, to reduce the molecular weight of biopolymers. At the same time, the efficiency of the resulting product increases significantly when consumed by the human body. New additives from chickpea are fundamentally different from traditional ones in properties and physicochemical state. The developed additives act simultaneously five in one: a source of essential amino acids and other biologically active substances, structure formers, gelling agents, thickeners and yellow dyes. The obtained protein supplements from chickpeas in combination with herbal Nanoadditives (from pumpkin, carrots, lemons, garlic, celery roots, ginger) were used as recipe components in the development of a new generation of confectionery products. The resulting confectionery products differ from the traditional ones in their low sugar and fat content (up to 5 %), high content of complete protein (from 13 to 20 %). In addition, 100 g of new products are able to satisfy the daily requirement for biologically active substances (β-carotene, phenolic compounds) and 0.5 daily requirement for vitamin C. The resulting products are natural, do not contain harmful impurities and exceed the quality of world analogues
Hibrit Kompozit Yapılarda Nanokil İlavesinin Darbe Davranışına Etkisi
Authors: ESENDEMİR Ümran , ŞİMŞEK Recep , SARAÇ Mehmet Fahri
Published: December 2020

Bu çalışmada, üç farklı konsantrasyonda (%0, %1, ve %5) amino ve silan ile fonksiyonellendirilmiş nanokil ilaveli cam/aramid elyaf takviyeli epoksi hibrit kompozit plakaların darbe davranışları deneysel olarak incelenmiştir. Darbe testleri ağırlık düşürme prensibi ile çalışan CEAST Fractovis Plus darbe cihazı kullanılarak yapılmış olup testler oda sıcaklığında gerçekleştirilmiştir. Kuvvet-çökme, absorbe edilen enerji-zaman, hız-zaman ve kuvvet-zaman eğrileri çizilmiş ve her bir eğri kendi içerisinde karşılaştırılmıştır. Sonuç olarak tüm darbe enerjileri için %1 nanokil takviyeli kompozit numunelerin, %0 ve %5 nanokil içeren kompozit numunelere nazaran darbe direncinin daha iyi olduğu görülmüştür. Ayrıca tüm nanokil oranları için hem darbe uygulanan üst yüzeyde hem de alt yüzeyde hasar bölgesinin artan darbe enerjisi ile arttığı gözlemlenmiştir.
Expression Patterns of Oxidative Stress-Related Genes of Cucurbita pepo and Relation to Cellular H2O2 under Short-Term Heavy Metal Stress
Authors: KAR Musa
Published: December 2020

Oxidative stress caused by biotic and abiotic stress factors is the most important cause of cellular damage. Due to their sessile structures, plants have evolved regulatory mechanisms to respond to various environmental stresses The increased cellular concentration of reactive oxygen species is one of the major consequences of oxidative stress. including H2O2 production. Also, H2O2 is produced as a by-product of respiratory and photosynthetic metabolisms in plants. H2O2 acts as a multifaceted molecule because of its dual role in cells. It has been found to act as a secondary messenger in signal transmission networks. In this study, the changes in expression levels of stress-related genes and their relationship with H2O2 in pumpkin (Cucurbita pepo) plant exposed to Cd heavy metal at different durations and concentrations were investigated. As a result of this study, we concluded that the expression of stress-related genes may be related to the oxidative status of the cell and the concentration of H2O2 in the signaling mechanism, the expression of stress-related genes may be up-regulated to a certain degree of concentration, while a higher concentration of H2O2 may down-regulate the expression of the genes.
Giyilebilir Hareket Sensörü Kullanılarak Dinamik Model ile Üst Uzuv Eklemleri Üzerine Etkiyen Kuvvetlerin ve Torkların Belirlenmesi
Authors: YANIKOREN Mıthat , YILMAZ Sezcan , USANMAZ Bilal , TEZGEL Selim , YAZAR Mehmet , GÜNDOĞDU Ömer
Published: December 2020

Bu çalışmada günlük hayatta en sık kullanılan vücut bölümlerinin başında gelen üst uzuvlara ait omuz ve dirsek eklemlerindeki kuvvet ve tork değerlerinin belirlenmesi amaçlanmıştır. Denekten dik konumda iken masada duran belirli bir yükü alması kendisine yaklaştırması ve geri bırakması istenmiştir. Deneğin bu görevi yerine getirirken gerçekleştirdiği hareketler esnasında omuz ve dirseğinde meydana gelen eklem kuvvet ve torklarının belirlenebilmesi için Newton-Euler metodu kullanılarak dinamik bir model oluşturulmuştur. Eklemlere ait konum verilerinin ölçülmesinde giyilebilir hareket sensörleri kullanılmıştır. Bu sensörlerden alınan hareket verileri ile oluşturulan dinamik model kullanılarak eklemlerdeki tork ve bağ kuvveti değerleri hesaplanmıştır. Elde edilen hesaplama sonuçları karşılaştırmalı olarak değerlendirilerek eklem kuvvet ve torklarının hangi durumlarda arttığı ve ne gibi tedbirlerle azaltılabileceği ortaya konulmuştur.
Kastamonu Aktarlarında Satılan Bazı Tıbbi Aromatik Bitkiler ve Kullanım Alanları
Authors: KAVAKLI Seydi Ahmet , YAYLACI Şahin Gürkan , UGURLU Emin
Published: December 2020

Bu araştırmada Kastamonu il merkezi, Tosya ve Taşköprü ilçelerinde satış yapan 31-58 yaşları arasında, biri kadın olmak üzere toplam yedi aktarla görüşülmüştür. Satılan bitkisel drogların yöresel isimleri, kullanım alanları, kullanılan kısımları, kullanım şekillerine ait bilgileri aktarlardan alınmıştır. Toplanan bilgiler, literatür bilgileri ile karşılaştırılarak çizelge halinde verilmiştir. Araştırma sonucunda aktarlarda satılan otuz üç familyaya ait cins ve tür düzeyinde altmış altı takson belirlenmiştir. En çok taksona sahip familya sekiz takson (%22) ile Rosaceae familyasıdır, onu sırasıyla altı takson (%17) ile Lamiaceae, beşer takson (%14) ile Apiaceae, Asteraceae ve Fabaceae familyaları takip etmektedir. Aktarlardan elde edilen bilgiye göre yirmi dört takson (%31) ile en çok kullanılan drog kısmı yapraklardır. Bunu sırasıyla yirmi takson (%26) ile meyve, on iki takson (%15) ile çiçek, yedi takson (%9) ile kök, dörder takson (%5) ile tohum, kabuk ve sap, iki takson (%3) ile yapraklı ve çiçekli dallar ve bir takson (%1) ile reçine takip etmektedir. Taksonların kullanım şekillerinin başında otuz dokuz takson (%50) ile demleme (infüzyon) yöntemi gelmektedir, onu sırasıyla on altı takson (%21) çiğ tüketim, on iki takson (%15) kaynatma (dekoksiyon), dokuz takson (%12) toz ve birer takson (%1) ise eritme ve yakma yöntemleri ile tüketim takip etmektedir.
AISI 310 Kalite Östenitik Paslanmaz Sac Malzemenin Lazerle Kesilmesinde Kesme Parametrelerinin Kesim Kalitesine Etkisinin İncelenmesi
Authors: CEBECİ İbrahim , ÖZLÜ Barış , DEMİR Halil
Published: December 2020

Yapılan çalışmada, AISI 310 paslanmaz sac malzemesinin lazer tezgâhında kesilmesiyle kesme parametrelerinin yüzey pürüzlülüğü ve kerf genişliğine etkileri araştırılmıştır. Lazer kesme deneyleri iki farklı gaz basıncı (0.8 bar ve 1 bar), dört farklı kesme hızı (20 mm.dak-1, 24 mm.dak-1, 28 mm.dak-1ve 32 mm.dak-1) ve dört farklı frekansta (3500 Hz, 4000 Hz, 4500 Hz ve 5000 Hz) yapılmıştır. Deneyler sonucunda numunelerin yüzey pürüzlülüğü ve kerf genişliği ölçülmüştür. Ayrıca lazer kesme parametrelerinin yüzey pürüzlülüğü ve kerf genişliği üzerine etkilerini belirlemek amacıyla varyans analizleri yapılmıştır. Lazer kesme deneylerinde en düşük (2.78 μm) yüzey pürüzlülüğü için optimum lazer kesme parametresi olarak 1 bar basınç, 5000 Hz frekans ve 32 mm.dak-1 kesme hızı olmuştur. En düşük (0.79 mm) kerf genişliği için optimum lazer kesme parametresi 0.8 bar basınç, 3500 Hz frekans ve 20 mm.dak-1 kesme hızı olarak tespit edilmiştir. Lazer kesme deneylerinde kesme hızının ve frekansın artması ile yüzey pürüzlülük değerlerinin azaldığı görülmüştür. Kesme hızının artırılması kerf genişliğinin azalmasına neden olurken, frekans değerinin artması kerf genişliğinin artmasına neden olmuştur. Varyans analizlerinin sonucunda da % 38.67 ile yüzey pürüzlülüğü ve % 49.50 ile kerf genişliği üzerine en etkin parametre kesme hızının olduğu tespit edilmiştir.
Treatment of landfill leachate with different techniques: an overview
Authors: Mojiri Amin , Zhou John L. , Ratnaweera Harsha , Ohashi Akiyoshi , Ozaki Noriatsu , Kindaichi Tomonori , Asakura Hiroshi
Published: December 2020

Landfill leachate is characterised by high chemical and biological oxygen demand and generally consists of undesirable substances such as organic and inorganic contaminants. Landfill leachate may differ depending on the content and age of landfill contents, the degradation procedure, climate and hydrological conditions. We aimed to explain the characteristics of landfill leachate and define the practicality of using different techniques for treating landfill leachate. Different treatments comprising biological methods (e.g. bioreactors, bioremediation and phytoremediation) and physicochemical approaches (e.g. advanced oxidation processes, adsorption, coagulation/flocculation and membrane filtration) were investigated in this study. Membrane bioreactors and integrated biological techniques, including integrated anaerobic ammonium oxidation and nitrification/denitrification processes, have demonstrated high performance in ammonia and nitrogen elimination, with a removal effectiveness of more than 90%. Moreover, improved elimination efficiency for suspended solids and turbidity has been achieved by coagulation/flocculation techniques. In addition, improved elimination of metals can be attained by combining different treatment techniques, with a removal effectiveness of 40–100%. Furthermore, combined treatment techniques for treating landfill leachate, owing to its high chemical oxygen demand and concentrations of ammonia and low biodegradability, have been reported with good performance. However, further study is necessary to enhance treatment methods to achieve maximum removal efficiency.
Biodegradation of benzyl butyl phthalate and dibutyl phthalate by Arthrobacter sp. via micellar solubilization in a surfactant-aided system
Authors: Nandi Moumita , Paul Tanushree , Kanaujiya Dipak Kumar , Baskaran Divya , Pakshirajan Kannan , Pugazhenthi G.
Published: December 2020

Endocrine-disrupting chemicals (EDCs) like phthalates, mostly discharged in industrial effluents, cause detrimental effects to different life forms, and hence their removal from constituent wastewater is necessary. This study investigated the kinetics of biomass growth and biodegradation of benzyl butyl phthalate (BBP) and dibutyl phthalate (DBP) by Arthrobacter sp. in a surfactant-aided batch system. The effect of different surfactants on aqueous solubility of BBP and DBP was initially examined, which showed that Tween 80 resulted in maximum bioavailability and biodegradation efficiency of the phthalates by the bacterium and without inhibiting the biomass growth. Compared with BBP, DBP was found to be efficiently degraded and supported the bacterial growth within a short period of time over the entire concentration tested in the range 100–1,000 mg L−1. A maximum biomass concentration of 1.819 g L−1 was obtained at 120 h for a DBP concentration of 600 mg L−1 in the presence of Tween 80, which is 5.66-fold increase in biomass concentration as compared with only DBP as the sole substrate. For evaluating the biokinetic parameters involved in DBP biodegradation, the experimental data on DBP utilization were fitted to various kinetic models as reported in the literature.
EFL Teacher's Classroom Management Practices at an Inclusive School
Authors: Wijaya Eka Anastasia , Agustini Dewa Ayu Eka , Adnyani Luh Diah Surya
Published: December 2020

This research aimed at finding out the classroom management practices by an EFL teacher at an inclusive school. There were four major aspects of classroom management as the focus of this research. Those are rules, physical environment, classroom climate, and teacher’s role. The subject of this study was an English teacher in class XI MM 2 at SMK Negeri 3 Singaraja. This study was a case study with qualitative research design. The methods of data collection were observation and interview. The findings showed that the classroom management practices by the teacher were successful to be implemented for both the inclusive and regular students. The rules created and communicated by the teacher were effective to develop the students’ behaviour and attitude as well as support the learning process. For the physical environment, the teacher provided spacious space for the physical disability student to move freely. The teacher gave positive and negative reinforcements for the students’ attitude and behaviour. Besides, the teacher modified the lesson plan, instruction, and assessment based on the student’s special needs. However, the teacher did not interact directly with the inclusive student’s parents and it should be done to support the learning process. In addition, there was no special escort teacher and training for the teacher to support the learning process.
Représentations du théâtre russe dans la presse francophone des Lumières
Authors: Chapin Carole
Published: December 2020

In the eighteenth century, journals carried information and promoted literary productions. They also acted as conduits for the reception of foreign cultures: thus, they show the ambiguities of Franco-Russian cultural relations. They acted as a medium that facilitated debates and polemics. This phenomenon is particularly interesting when the journalists discussed theatre, because this art form can act as a political and social instrument. Interest in the Russian theatre in French-speaking periodicals in the eighteenth century was not only a sign of greater interest in ‘Russian subjects’, but also formed part of a general reflection about contemporary drama. This trend was characterized by more openness towards foreign cultures. During this period of theoretical questioning, national theatre cultures tended to strengthen their specificities, while also using borrowings and translations from others theatres. The interest of French theatre aficionados for Russian theatre is well-known, as is the enthusiasm of the purveyors of Russian theatre for French theatre. However, the choice of words used to describe Russian theatre in the Francophone press—whether they be of praise or of criticism—can hide other goals, such as showing the greatness of Catherine II’s government or insisting on the role of the French model in Russia’s cultural development. In this paper, a corpus of selected articles is used to show several practices and issues o pertaining to the topic of the Russian theatre in the Francophone press. We question several possible political and aesthetic consequences of the image of Russia, which were spread by French-speaking periodicals in Europe. Furthermore, we try to analyze the role played by the specific discourse used by the periodicals in order to demonstrate its importance for researchers working on eighteenth-century European theatre and cultural relations.
Transforming Health and Resiliency Through Integration of Values-based Experiences: Implementation of an Electronic Evidence-based Whole Health Clinical Program (Preprint)
Authors: Haun Jolie N , Paykel Jacquelyn , Melillo Christine
Published: December 2020

BACKGROUND

Complementary and integrative health (CIH) is the foundation of the Department of Veterans Affairs (VA) Whole Health System program (WH), including Transforming Health and Resiliency through Integration of Values-based Experiences (THRIVE). The global COVID-19 pandemic prompted an urgent need to provide services such as THRIVE while following guidelines for social distancing.

OBJECTIVE

The objective of this paper was to describe the systematic implementation of THRIVE using an electronic delivery model.

METHODS

The study involved an observational clinical program implementation project using the RE-AIM framework to contextualize the implementation strategies and results, and then the implementation of an electronically delivered CIH group medical appointment program (eTHRIVE).

RESULTS

Clinical staff transitioned to 100% electronic delivery of the THRIVE curriculum using the new eTHRIVE delivery model. The current electronic delivery model, eTHRIVE, has effectively enrolled 10-12 veterans per cohort, with 8 cohorts, totaling 87 veterans to date. eTHRIVE attrition has been 6% (5/87) since initiation.

CONCLUSIONS

The current climate of the VA WH programmatic initiative combined with the public health needs during a global pandemic prompted the move of THRIVE program into an electronic format to broaden scalability and reach.
Analyzing the roles of newspaper articles and tweets to help alleviate sudden physician absenteeism: case study of Takano Hospital in Fukushima in the long-term aftermath of the 2011 Japan’s triple disaster (Preprint)
Authors: Ozaki Akihiko , Onoue Yosuke , Murayama Anju , Tahara Taishi , Senoo Yuki , Kosaka Makoto , Mori Kohei , Shimada Yuki , Yamamoto Chika , Tsubokura Masaharu , Torii Hiroyuki A , Uno Kazuko
Published: December 2020

BACKGROUND

Rural physician undersupply is a universal concern, leading to sudden physician absenteeism or unavailability on occasion. While media and social networking services may help mitigate these emergencies, information is lacking about their actual contribution in times of physician absenteeism. On December 30, 2016, the director and sole physician of Takano Hospital in Fukushima, Japan, died. The physician’s passing placed many hospitalized patients in danger. This sudden case of physician unavailability, named the Takano Hospital Crisis, provoked massive attention from the general public, in the media and on social media networks such as Twitter.

OBJECTIVE

The aim of this study was to analyze newspaper articles, tweets and Twitter accounts relating to Takano Hospital Crisis.

METHODS

Newspaper articles and tweets were searched for keywords associated with Takano Hospital Crisis and its former director between October 2016 and June 2017. We first evaluated the chronological change in the number of articles and tweets, and the number of characters and relevant keywords in the articles. Then tweets and influencers who were popular on the Twitter platform from December 30, 2016 to February 28, 2017, were categorized.

RESULTS

We assessed 151 newspaper articles and 67,006 tweets. The results show that number of newspaper articles and tweets steeply increased and then diminished within the first month of the incident. The median number of characters in newspapers articles was 436 and the most frequent keyword was medical doctor. There were 753 original tweets that were retweeted more than four times from December 30, 2016 to February 28, 2017. Of these, 245 (32.5%) expressed concern. Notable influencers were journalists, news media outlets, and healthcare professionals that helped with fund raising and providing clinical service in the hospital.

CONCLUSIONS

Twitter could temporarily function in cases of sudden physician absenteeism to attract volunteers and funding, however, this would not be a long-term solution. In a more general context, a long-term effort of supports from the hospitals themselves and the government will be required to manage the persistent state of physician absenteeism.