bluuebunny/crossref_metadata_2025 huggingface dataset:
ANALYSIS OF THE INFLUENCE OF THE PHYSICAL-MECHANICAL PROPERTIES OF THE COAL SERIES ON THE CHOICE OF THE EXCAVATION METHOD IN THE MINES OF RMU „REMBAS“- RESAVICA
Authors: Todorović Vladimir , Tošić Dražana , Trivan Jelena
Published: November 2020

The choice of the excavation method of coal layers is influenced by a number of natural-geological parameters of the working environment, where the physical and mechanical properties of the coal layers, immediate floor and hanging wall are very important. This paper, by the research conducted within the given topic, deals with the influence of the physical-mechanical properties of the coal seam and the immediate surrounding rocks on the choice of excavation method in specific conditions of the undergrounds of RMU “Rembas” - Resavica. To this aim, the physical and mechanical properties were systematized, and their grouping was given and individual significance was described, according to which the influences on the choice of the excavation method were defined.
ENVELHECIMENTO E HIV/AIDS NA PARAÍBA: ANÁLISE EPIDEMIOLÓGICA, 2009-2018
Authors: Pereira Pedroza Ariadne , Ronner Andrade da Silva Francisco , Cristina de Abreu Temoteo Rayrla , Haissa Barros Henriques Amanda
Published: November 2020

Considerando que aproximadamente a partir 50 anos de idade, surgem alterações biológicas e psicológicas que caracterizam a menopausa na mulher e a andropausa no homem, sinalizando o início do processo de envelhecimento, esse grupo etário chama a atenção dos diversos segmentos sociais pelas importantes mudanças enfrentadas associadas à infecção pelo Vírus da Imunodeficiência Humana (HIV). Objetivo: analisar os dados epidemiológicos do HIV/AIDS na faixa etária em discussão. Método: trata-se de um estudo transversal, retrospectivo, descritivo e de abordagem quanti-qualitativa, realizado no período de agosto a setembro de 2019, sendo os dados obtidos através de consulta a partir das informações disponíveis nos sites TABNET/DATASUS e Portal da Saúde do Ministério da Saúde, através do Sistema de Informação de Agravos de Notificação - SINAN, com amostra entre 2009 a 2018. A análise dos dados foi realizada através de estatística descritiva simples, além de análise reflexiva, tendo como embasamento teórico material publicado pertinente ao tema proposto. Resultados: observou-se avanço do número de casos de HIV em pessoas com idade igual ou superior a 50 anos no Brasil, diante da notificação de 27.799 casos durante o período de 2009 a 2018, predominância do sexo masculino, correspondendo a terceira maior incidência, por faixa etária no país. Conclusão: a epidemia do HIV e da AIDS no Brasil não está mais restrita a grupos específicos, tendo sua capacidade de disseminação em todos os segmentos da sociedade, exigindo maior atenção dos profissionais e serviços de saúde quanto aos aspectos associados ao envelhecimento.

Descritores: HIV e AIDS; Envelhecimento; Sexualidade.
PENGARUH PERSEPSI MANFAAT, KEMUDAHAN DAN KEAMANAN TERHADAP KEPUTUSAN PENGGUNAAN E-WALLET
Authors: Rahmawati Yuliani Dwi , Yuliana Rahmi Yuliana
Published: November 2020

This study aims to determine the effect of perception of benefits, perception of ease, and security perception on the decision to use e-wallet for STIE Bank BPD Jateng students. The population in this study is the active students of 2016 - 2019 who are in STIE Bank BPD Jateng, amounting to 824 students. The sampling technique used in this study uses snowball sampling and The number of samples selected was 90. Data collection methods with questionnaires distributed online. The analytical tool in this study is multiple linear regression analysis. The results show that the perception of benefits, perceived convenience, and perceived security have a positive and significant effect on the decision to use e-wallet for students. Variable perception of security has a dominant influence on the decision to use e-wallet for students. Security is indeed the most important in the decision to use e-wallet because someone feels safe and protected.
Performance of Isolated Soft Switching Current Fed Lcc-T Resonant Dc-Dc Converter for Pv/Fuel Cell Applications
Authors:   M. Tech, Department of Electrical and Electronics Engineering, Lakireddy Bali Reddy College of Engineering, Mylavaram, India., Reddy V. Prabhakar , Prasad Dr. J. Siva Vara ,   Professor & HOD, Department of Electrical and Electronics Engineering, Lakireddy Bali Reddy College of Engineering, Mylavaram, India.
Published: November 2020

In this paper, the design and evaluation of isolated soft switching current LCC-T Resonant DC-DC Converter for PV/Fuel cell applications. For the front end inverter switches, zero voltage switching (ZVS) is used for conversion. For voltage double diodes, Zero-Current Switching (ZCS) is used. Earlier, DC-DC converter provides high harmonic currents, so to overcome that, proposed converter is introduced. The proposed converter will improve the content of harmonic current based on the input variations and wide load. To get the required output voltage, transformer ration will be reduced. Because of the, for PV/ Fuel cell applications have better foot Print and high potential. The proposed converter operates in two modes mainly; they are constant frequency mode and constant duty cycle mode. These modes mainly depend on the load demand. At last from results it can observe that gives satisfying proposed theory.
Epilepsy Prediction using a Combined LSTM – XGBoost System on EEG Signals
Authors:   Department of Information Technology, Sri Sivasubramaniya Nadar College of Engineering, Chennai, India., Vinayak E Shanmuga Skandh , A Shahina ,   Department of Information Technology, Sri Sivasubramaniya Nadar College of Engineering, Chennai, India., A Nayeemulla Khan ,   School of Computing Sciences and Engineering, Vellore Institute of Technology, Chennai, India.
Published: November 2020

Ranking 4th in the list of most common neurological diseases, Epilepsy – a severe chronic disorder that causes recurrent and unprovoked seizures, affects over 1% of the world population. One of the most preliminary and commonly used mechanisms to test the presence of epilepsy in patients is the electroencephalogram (EEG). EEG – an instrument capable of recording the electrical activity in the brain. The EEG data are capable of revealing information, unique to a patient with episodes of seizure. In this article a system capable of detecting such information is proposed, using neural networks and machine learning algorithms, which can be utilized in the automation process of epilepsy detection. The proposed system utilizes the Long Short-Term Memory (LSTM) neural network algorithm and the eXtreme Gradient Boosting (XGB) algorithm, to classify the channels of the EEG data. The system produces an average accuracy of 96.2% in the LSTM channel classification models and an ensemble classification of the LSTM classifications using XGB, producing an average accuracy of 98.5%. Data encoding is employed in the system, which improves the efficiency and performance of the system by exhibiting a classification duration of 31s/sample.
STUDY OF FEEDING PRACTICES IN CHILDREN WITH SEVERE ACUTE MALNUTRITION (SAM) OF MUMBAI, MAHARASHTRAAGED 9 – 24 MONTHS
Authors: Kapoor Megha , Madan Jagmeet , Jadhav Alka , Bellare Nisha
Published: November 2020

BACKGROUND: Malnutrition is a public health concern in India. Suboptimal feeding practices reflect the development of severe acute malnutrition in children. The purpose of the study was to determine the feeding practices in children with severe acute malnutrition (SAM) aged 9 – 24 months.
METHODS: A cross-sectional study was conducted in the Nutrition Rehabilitation Research and Training Centre (NRRTC) in Mumbai, Maharashtra including children aged 9 – 24 months. Children were included in the study as per WHO classification of severe acute malnutrition. The information on anthropometric measurements and feeding practices were recorded in a structured questionnaire. Correlation between the feeding practices and anthropometry was examined. Descriptive and bivariate analysis was carried out.
RESULTS: 84% of SAM children were found to be severely underweight and 52 % were severely stunted. Only 40% of children were exclusively breastfed. The introduction of complementary feeds at 6 months of age was practiced in 25% of children. 44 % of children were introduced to semi-solid feeds beyond six months of age. Minimum Dietary Diversity was adequate in only 28% of SAM children. There was the least consumption of vitamins and iron-rich food groups among the SAM children.
CONCLUSION: Improving maternal awareness about child feeding practices which are preventable risk factors is a key for reducing the burden of severe acute malnutrition.
ASSESSMENT OF SERUM PROCALCITONIN LEVELAS A MARKER TO DIAGNOSE LATE ONSET SEPSIS IN NEONATES
Authors: Harish Javeri Aarti , Jagadeeswari Jagadeeswari
Published: November 2020

Introduction: Sepsis constitutes one of the most prevalent cause of mortality in newborns, eminently in developing countries. There are several investigations available that may be used as indicators to identify sepsis, however, the inability of a single laboratory investigation for rapid detection and diagnosis of sepsis, calls for the need of a specific investigation. Lately, it has been proclaimed that procalcitonin can be used as a reliable predictor for diagnosis and to determine severity as well as outcome of neonatal sepsis. Objective: To assess levels of serum Procalcitonin level as a marker to diagnose late-onset sepsis in a neonatal intensive care unit (NICU). Methods and Materials: A cross-sectional study was performed between the June 2018 to November 2018 at Sree Balaji Medical College and Hospital. Serum procalcitonin levels were determined for 25 neonates of age between 3-30 days. Results: Distinct elevations of procalcitonin levels were observed in neonates with late-onset sepsis caused mainly by coagulase-negative staphylococci. Currently nosocomial infection due to coagulase-negative staphylococci is a frequent occurrence in NICUs. Conclusion: Serum procalcitonin is an efficient tool to diagnose Late Onset of Sepsis.
VALUE OF AgNOR PARAMETERS IN EVALUATION OF EPITHELIAL BREAST LESIONS ON CYTOLOGY
Authors: Joseph Francis Asir , Munavarah Sithy Athiya
Published: November 2020

Introduction: Fine needle aspiration cytology (FNAC) is traditionally been used as a component of triple assessment tool for evaluation of breast lesions. FNAC being done as a simple outpatient procedure offers a rapid and safe diagnostic approach for breast lesions. The aim of the present study is to assess the value of AgNOR parameters in cytology smears for differentiating benign proliferative and non-proliferative lesions from malignant lesions of breast. And also to correlate the value of AgNOR parameters with Robinson’s cytological scoring system for malignant breast lesions.
Materials and Methods: The present prospective study was conducted at the Cytology Laboratory of the Department of Pathology, Tirunelveli Medical College for 1 year duration. 100 cases with breast lump were randomly chosen and aspirated smears were stained with Hematoxylin & Eosin and AgNOR stains. The AgNOR parameters were then evaluated.
Results: All the AgNOR parameters showed statistically significant increase in values progressively from non-proliferative benign breast lesions to proliferative breast lesions and then to malignant breast lesions.
Conclusion: AgNOR parameters are of great help in differentiating benign from malignant neoplasm and also in differentiating proliferative vs non-proliferative lesions of breast. Mean AgNOR score and SAPA score were found to be more superior in comparison to other AgNOR parameters.
WhatsApp Messenger as a Mediating Tool in Times of COVID-19 for Enhancing Student Engagement in e-Tutorials at a Rural South African University
Authors: Motaung Letsela B. , Dube Bekithemba
Published: November 2020

The COVID-19 pandemic has ushered in myriad of predicaments in societies around the world. These predicaments include plummeting economies, access to technological resources, and access to quality teaching and learning in higher education institutions. This paper is couched in critical emancipatory research with emphasis on emancipation of rural students in the new normal that has emerged because of COVID -19 pandemic. Participatory Action Research was used as a research approach to collect data through WhatsApp Messenger where the discussions were centred on two questions which are; what are the experiences of students on the use of WhatsApp by tutors and how can learning using WhatsApp enhance students’ engagement? The findings of this study suggest that students were having difficulties with engaging in online tutorials. These challenges include inadequate access to technological devices, skills and competencies in using technological tools, network connectivity challenges, and low levels of engagement. The paper ends by arguing that there is need for the universities to invest in emancipating tutors, availing digital devices to rural students to enhance teaching and learning as well as reducing city and rural divide in South Africa.
Development of an ICUMSA method – a comparison of cane analysis methods
Authors: Walford Stephen N. , Roussel Camille
Published: November 2020

The International Commission for Uniform Methods of Sugar Analysis Ltd (ICUMSA) is the only international organisation involved with the development and testing of analytical methods for use within the sugar industry. Analysis methods undergo a rigorous approval procedure, progressing from Tentative to Official or, Official (Reference) method status before being published in the Methods Book. As an example of these processes, the comparison of two alternative computations (Berding and Pollock; Hamna) used in a proposed hydraulic-press method for cane evaluation is described. The press method was compared to the Official Method for cane analysis (GS5/7-1 (2011)) that is based on wet disintegration of cane, by comparing the results obtained from 79 samples split into three subsamples analysed by the three methods. Correlations of greater than 0.9 were recorded for the press method’s sugar and fibre results compared against the existing method. A recommendation was made to ICUMSA, based on the study, that a draft method should be written for cane evaluation using the press method and Berding and Pollock computations.
Influence of Hydrological Conditions on the Ecological State of Shallow Lake Vörtsjärv
Authors: Järvet Arvo
Published: November 2020

Lake Vörtsjärv as a very shallow (mean depth 2.8 m) water-body and considerable water level fluctuations cause changes in both the surface area and volume of the lake. Due to the shallowness of the lake, low level periods are accompanied by several phenomena detrimental to its ecosystem, like cyanophyte blooms, overgrowing with macrophytes, resuspension of phosphorous compounds, restricted spawning places for pike and winter fish kills. In the years of low water level the perspectives to catch in established fishing sites using particular gear as well as access to harbours are hindered. Causal relations between the water regime and ecological state of the lake Vörtsjärv have been discussed in this paper.
Floods 2002 in Prague - reflections, lessons and ideas
Authors: Baena Escudero Rafael , García Martínez Belén , Guerrero Amador Inmaculada , Hartvich Filip , Leicht Brigitte , Marchiol Lara , Giacomini Laura , Guaran Andrea , Králová Alexandra , Licht Andreas , Neu Hannah , Pezzullo Luca , Weingerová Veronika
Published: November 2020

This contribution deals with the consequences of floods, which affected the capital of CR, Prague, in august 2002. The members of working group have seen the situation one year after the event. The article is divided into three parts, each dealing with specific area of problems. First part concerns the measures that should be taken before the flood event occurs, including long-term flood protection strategy. In the second part we discuss the succession of steps to be performed in order to minimize the endangerment of public and the damages during the flood period. Last section suggests solutions and lessons that might be taken from the 2002 flood event's course and its consequences in Prague.
Mg-Al-Cr2O7 Hydrotalcite-Like Catalysts Synthesized at Different pH Values for Styrene Oxidation
Authors: Tran Le Huy , Tran Thi Ngoc Mai , Vu Anh Tuan , Pham Quoc Khanh  , Nguyen Thi Minh Thu , Nguyen Tien Thao
Published: November 2020

Dichromate anions were intercalated between two consecutive hydroxide layers of [Mg0.6Al0.4(OH)2]0.40+ via co-precipitation at different pH conditions. The physico-chemical properties of the obtained solids were examined by physical methods such as X-ray diffraction (XRD), Infrared (IR), Scanning Electron Microscopy (SEM), Brunauer-Emmett-Teller (BET) and Energy-Dispersive Spectroscopy (EDS). The experimental results indicated that the amount of dichromate anions in the catalysts varies with the pH media. Also, the morphology, structure and chemical composition of the materials depends strongly on the preparation conditions. The Mg-Al-Cr2O7 hydrotalcite-like compounds are used as heterogeneous catalysts for the styrene oxidation with H2O2 at mild conditions. The styrene conversion is about 20-50% while styrene selectivity remains rather high.
A Simple Numerical Model for Studying Cloud Formation Process Inthe Tropics : Heated and Cooled Surface Experiments
Authors: Noisri Chantawan
Published: November 2020

A simple numerical model for demonstrating local cloud formation processes in the tropics is beingdeveloped. The model equations are derived from the fundamental system of partial differential equations ofcomputational fluid dynamics and the deep convection approximation is used to eliminate sound waves. Themodel domain is two-dimensional with length100 kilometers and height 17.5 kilometers. A non-uniform grid isused with the thinnest layer (100 meters) at the earth's surface and thickest layer (1,300 meters) at the top of thetroposphere. The horizontal cell's width one kilometer. The Arakawa-C grid is used for the leapfrog method andforward Euler method. Experiments to study the effects of heating and cooling at the surface and the deepconvection approximation in moist air are discussed. The deep convection approximation was found to beunsuitable for a model. The model without the deep convection approximation gives processes expected in thereal atmosphere.
ENSURING INFORMATION SECURITY OF A COMMERCIAL ENTERPRISE WHEN TRANSFERING EMPLOYEES TO A REMOTE WORK
Authors: Логинова Екатерина Витальевна
Published: November 2020

Проблема разглашения данных, относящихся коммерческой тайне, в современном мире уже давно стала одной из самых значимых, поскольку информация является приоритетным ресурсом в 21 веке. На наш взгляд, все чаще и чаще возникают проблемы, связанные со сложностью распространения и защиты режима коммерческой тайны в отношении документов, имеющих электронную форму.

The problem of disclosing data related to trade secrets has long become one of the most significant in the modern world, since information is a priority resource in the 21st century. In our opinion, more and more often there are problems associated with the complexity of the distribution and protection of the commercial secret regime in relation to documents in electronic form.
MODELING THE SEPARATION PROCESS IN A HYDROCYCLONE
Authors: Валеев Сергей Ильдусович , Савчук Владимир Александрович
Published: November 2020

На основе уравнения Навье-Стокса проведено численное исследование эффективной вязкости в цилиндрическом гидроциклоне для разделения эмульсий с малым содержанием легких примесей. Установлено, что эффективная вязкость в гидроциклоне возрастает с увеличением разгрузочного соотношения.

On the basis of the Navier-Stokes equation, a numerical study of the effective viscosity in a cylindrical hydrocyclone for the separation of emulsions with a low content of light impurities is carried out. It was found that the effective viscosity in a hydrocyclone increases with an increase in the unloading ratio.
Insulin Secretion and Insulin Resistance Trajectories over 1 Year after Kidney Transplantation: A Multicenter Prospective Cohort Study
Authors: Bang Jun Bae , Oh Chang-Kwon , Kim Yu Seun , Kim Sung Hoon , Yu Hee Chul , Kim Chan-Duck , Ju Man Ki , So Byung Jun , Lee Sang Ho , Han Sang Youb , Jung Cheol Woong , Kim Joong Kyung , Lee Su Hyung , Jeon Ja Young
Published: November 2020

Background: We investigated the changing patterns of insulin secretion and resistance and risk factors contributing to the development of post-transplant diabetes mellitus (PTDM) in kidney recipients under tacrolimus-based immunosuppression regimen during 1 year after transplantation.Methods: This was a multicenter prospective cohort study. Of the 168 subjects enrolled in this study, we analyzed a total 87 kidney transplant recipients without diabetes which was assessed by oral glucose tolerance test before transplantation. We evaluated the incidence of PTDM and followed up the index of insulin secretion (insulinogenic index [IGI]) and resistance (homeostatic model assessment for insulin resistance [HOMA-IR]) at 3, 6, 9 months, and 1 year after transplantation by oral glucose tolerance test and diabetes treatment. We also assessed the risk factors for incident PTDM.Results: PTDM developed in 23 of 87 subjects (26.4%) during 1 year after transplantation. More than half of total PTDM (56.5%) occurred in the first 3 months after transplantation. During 1 year after transplantation, insulin resistance (HOMA-IR) was increased in both PTDM and no PTDM group. In no PTDM group, the increase in insulin secretory function to overcome insulin resistance was also observed. However, PTDM group showed no increase in insulin secretion function (IGI). Old age, status of prediabetes and episode of acute rejection were significantly associated with the development of PTDM.Conclusion: In tacrolimus-based immunosuppressive drugs regimen, impaired insulin secretory function for reduced insulin sensitivity contributed to the development of PTDM than insulin resistance during 1 year after transplantation.
Cross-Sectional and Longitudinal Examination of Insulin Sensitivity and Secretion across Puberty among Non-Hispanic Black and White Children
Authors: Marwitz Shannon E. , Gaines Megan V. , Brady Sheila M. , Mi Sarah J. , Broadney Miranda M. , Yanovski Susan Z. , Hubbard Van S. , Yanovski Jack A.
Published: November 2020

Background: Few studies using criterion measures of insulin sensitivity (SI) and insulin secretory capacity (ISC) have been conducted across puberty to adulthood. We examined how SI and ISC change from pre-puberty through adulthood.Methods: Hyperglycemic clamp studies were performed in a convenience sample of non-Hispanic Black (NHB) and White children evaluated at age 6 to 12 years and at approximately 5-year intervals into adulthood (maximum age 27 years). SI and ISC (first-phase and steady-state insulin secretion) were determined cross-sectionally in 133 unique participants across puberty and in adulthood. Additionally, longitudinal changes in SI and ISC were compared at two timepoints among three groups defined by changes in pubertal development: pre-pubertal at baseline and late-pubertal at follow-up (n=27), early-pubertal at baseline and late-pubertal at follow-up (n=27), and late-pubertal at baseline and adult at follow-up (n=24).Results: Cross-sectionally, SI was highest in pre-puberty and early puberty and lowest in mid-puberty (analysis of covariance [ANCOVA] P=0.001). Longitudinally, SI decreased from pre-puberty to late puberty (P<0.001), then increased somewhat from late puberty to adulthood. Cross-sectionally, first-phase and steady-state ISC increased during puberty and decreased in adulthood (ANCOVA P<0.02). Longitudinally, steady-state and first-phase ISC increased from pre-puberty to late puberty (P<0.007), and steady-state ISC decreased from late puberty to adulthood. The NHB group had lower SI (P=0.003) and greater first-phase and steady-state ISC (P≤0.001), independent of pubertal development.Conclusion: This study confirms that SI decreases and ISC increases transiently during puberty and shows that these changes largely resolve in adulthood.
Photometry of 10 Million Stars from the First Two Years of TESS Full Frame Images: Part II
Authors: Huang Chelsea X. , Vanderburg Andrew , Pál Andras , Sha Lizhou , Yu Liang , Fong Willie , Fausnaugh Michael , Shporer Avi , Guerrero Natalia , Vanderspek Roland , Ricker George
Published: November 2020

We present light curves from a magnitude limited set of stars and other stationary luminous objects from the TESS Full Frame Images, as reduced by the MIT Quick Look Pipeline (QLP). Our light curves cover the full two-year TESS Primary Mission and include ∼14,770,000 and ∼9,600,000 individual light curve segments in the Southern and Northern ecliptic hemispheres, respectively. We describe the detrending techniques we used to create the light curves, and compare the noise properties with theoretical expectations. All of the QLP light curves are available at MAST as a High Level Science Product (HLSP) via doi:10.17909/t9-r086-e880 (https://archive.stsci.edu/hlsp/qlp). This is the largest collection of TESS photometry available to the public to date.
Indirectly Measuring Stellar Velocity Dispersions in High-redshift Disk Galaxies
Authors: Hamilton-Campos Kathleen A. , Simons Raymond C. , Snyder Gregory F. , Ceverino Daniel , Dekel Avishai , Primack Joel R.
Published: November 2020

In the Milky Way, older stars tend to have higher vertical velocity dispersions and comprise a thicker component of the stellar disk. Historically, this has been attributed to the gradual vertical heating of stellar orbits. A competing explanation suggests that stars may have formed in thicker disks at earlier times, inheriting the turbulent velocities of the gas in which they formed. As the gas velocity dispersion in disks declines with time, stars should form in thinner disks. Both explanations are consistent with today’s Milky Way. We present a novel technique to break this degeneracy by indirectly measuring the vertical stellar velocity dispersion of high redshift galaxies using Hubble Space Telescope imaging. We assess this method using a high-resolution hydrodynamic galaxy formation simulation. By comparing the true vertical velocity dispersion of the simulated disk against what is inferred through its synthetic images, we demonstrate the potential of this approach.
Functional Interactions of Common Allotypes of Rhesus Macaque FcγR2A and FcγR3A with Human and Macaque IgG Subclasses
Authors: Grunst Michael W. , Grandea Andres G. , Janaka Sanath Kumar , Hammad Iman , Grimes Parker , Karl Julie A. , Wiseman Roger , O’Connor David H. , Evans David T.
Published: November 2020

The rhesus macaque is an important animal model for AIDS and other infectious diseases. However, the investigation of Fc-mediated Ab responses in macaques is complicated by species-specific differences in FcγRs and IgG subclasses relative to humans. To assess the effects of these differences on FcγR–IgG interactions, reporter cell lines expressing common allotypes of human and rhesus macaque FcγR2A and FcγR3A were established. FcγR-mediated responses to B cells were measured in the presence of serial dilutions of anti-CD20 Abs with Fc domains corresponding to each of the four subclasses of human and rhesus IgG and with Fc variants of IgG1 that enhance binding to FcγR2A or FcγR3A. All of the FcγRs were functional and preferentially recognized either IgG1 or IgG2. Whereas allotypes of rhesus FcγR2A were identified with responses similar to variants of human FcγR2A with higher (H131) and lower (R131) affinity for IgG, all of the rhesus FcγR3A allotypes exhibited responses most similar to the higher affinity V158 variant of human FcγR3A. Unlike responses to human IgGs, there was little variation in FcγR-mediated responses to different subclasses of rhesus IgG. Phylogenetic comparisons suggest that this reflects limited sequence variation of macaque IgGs as a result of their relatively recent diversification from a common IGHG gene since humans and macaques last shared a common ancestor. These findings reveal species-specific differences in FcγR–IgG interactions with important implications for investigating Ab effector functions in macaques.
Botanical geography correspondence between Alexander von Humboldt and Filippo Parlatore (1851-1852)
Authors: Banfi Enrico , Visconti Agnese
Published: November 2020

This paper focuses on the relationship between Alexander von Humboldt, the famous German explorer-naturalist and Filippo Parlatore, botanist from Palermo (Sicily, Italy) in the field of botanical geography. Our considerations are based on three letters written by Humboldt to Parlatore in May 1851 and two letters with attachments written by Parlatore in answer to Humboldt in May 1851 and June 1852. The former are preserved in the Biblioteca comunale di Palermo (Palermo City Library) and the latter in the Staatsbibliothek zu Berlin (Berlin State Library). On reading the correspondence it can be inferred how, on the one hand, Humboldt asked Parlatore for verification on some important questions of botanical geography that he intended to cover in the second part (never published) of volume five of his Kosmos, and how, on the other hand, Parlatore diverged in his answers from Humboldt’s intent to search for universal laws to explain the distribution of plants on the planet. In fact, Parlatore was engaging in new lines of research, which, though stemming from Humboldt, were moving towards a modern twodimensional interpretation of natural plant communities according to which vegetation and flora, though interacting, are distinct realities and require different methods of study. The paper includes a portrait of Parlatore and one of Humboldt, a taxonomic table of the plants mentioned by the two scientists in their correspondence and illustrations of a selection of the same plants.
Oncoradiology Preparedness in the COVID-19 Pandemic: Perspective from a Tertiary Oncology Referral Center from Eastern India
Authors: Chatterjee Argha , Biswas Bivas K , Gehani Anisha , Das Jayanta , Sen Saugata , Mukhopadhyay Sumit , Chandra Aditi , Ghosh Priya , Gupta Bharat , Lingegowda Dayanand
Published: November 2020

At the time of writing this article, more than 18 million people worldwide have been infected by the severe acute respiratory syndrome-associated coronavirus-2 and about 700,000 people have died from coronavirus disease 2019 (COVID-19). In India, about 190,000 people have been infected and nearly 39,000 people have succumbed to this infection. Infection among health-care workers has emerged as one of the key problems in facing this pandemic. The purpose of this article is to describe the measures taken by the department of oncoradiology at our institution to control the infection and minimize staff exposure during the current lockdown period with reduced patient load and in the post-lockdown period with increased demand for radiology services. The key focus of this article is the continued delivery of cancer imaging services with practical precautions and optimized resources. We have also discussed algorithms and protocols unique to the practice of oncoradiology in the time of the COVID-19 pandemic.
Perceptions of immunity and vaccination certificates among the general population: a nested study within a serosurvey of anti-SARS-CoV-2 antibodies (SEROCoV-POP)
Authors: Nehme Mayssam , Stringhini Silvia , Guessous Idris , Swiss Medical Weekly
Published: November 2020

At a time when COVID-19 immunity certificates are debated and vaccination certificates might potentially be made available if an effective vaccine is established, we conducted a study to elucidate public opinion on this issue. Our objective was to determine social and individual perceptions of COVID-19 immunity certificates through a population-based study.
A nested survey within the SEROCoV-POP study, a population-based serosurvey of anti-SARS-CoV-2 IgG antibodies in Geneva, Switzerland, was conducted with a self-administered questionnaire. The questionnaire was proposed to 1520 SEROCoV-POP participants. Measures included percentage of participants agreeing or disagreeing with statements on immunity and vaccination certificates. Stratification by age, gender, education and work status was used to examine socio-demographic variations.
Of the 1520 SEROCoV-POP participants, 1425 completed the questionnaire (response rate 93%; mean age ± standard deviation 52 ± 15.1 years; 51.9% women). About 80% of participants agreed that knowing one’s serology status would lead to a change in one’s behaviour. In the event that the presence of antibodies correlated with immunity, 60% of participants reported that certificates should be offered to the general population. The results showed variations in perceptions of certificates depending on the context (73% agreed on certificates’ utility for travel, 72% for entering a country, and 32% for the right to work). Provided an effective vaccine was available, 55% of participants agreed that vaccination should be mandatory and 49% agreed that a vaccination certificate should be mandatory. About 68% reported a potential risk of discrimination and 28% a risk of deliberate infection. Differences were seen with age, gender and education level.
This study shows that the general adult population in Geneva, Switzerland can envisage scenarios where COVID-19 immunity, and eventually vaccination, certificates would be useful. Seroprevalence estimates of anti-SARS-CoV-2 antibodies remain low to date, and the interpretability of serological testing and immunity remains undefined. However, the information from this study is important, especially the differences based on context and the socio-demographic variations, and should be taken into account if COVID-19-related certificates are to be implemented.
An investigation into the efficiency of biocides in controlling algal biofouling in seawater industrial cooling towers
Authors: Mohammed Al-Bloushi , Jayaprakash Saththasivam , Jeong Sanghyun , Abdullah Al-Refaie , Kumar Raju S. Arun , Kim Choon NG , Gary Amy L. , TorOve Leiknes
Published: November 2020

Biofouling in the open recirculating cooling water systems may cause biological corrosion, which can reduce the performance, increase the energy consumption and lower heat exchange resulting in reduced efficiency of the cooling tower (CT). Seawater CTs are prone to bio-fouled due to the presences of organic and inorganic compounds which act as nourishment for various microorganisms like (algae, fungi, and bacteria) for their growth under certain environmental conditions. The most commonly being used method to control the biofouling in CT is by addition of biocides such as chlorination. In this study, diatom and green algae were added to the CT basin and its viability was monitored in the recirculating cooling seawater loop as well as in the CT basin. Three different types of oxidizing biocides, namely chlorine, chlorine dioxide (Chlorine dioxide) and ozone, were tested by continuous addition in pilot-scale seawater CTs and it was operated continuously for 60 d. The results showed that all biocides were effective in keeping the biological growth to the minimum regardless of algal addition. Amongst the biocides, ozone could reduce 99% of total live cells of bacteria and algae, followed by Chlorine dioxide at 97%, while the conventional chlorine showed only 89% reduction in the bioactivities.
A könyvtárosok felkészítése vezetési feladatokra: kompetenciák komplex feladatokhoz
Authors: Bultrini Leda
Published: November 2020

A könyvtárakban megvan az a potenciál, hogy sikeresen szembenézzenek a nehéz idők kihívásaival. Ennek az a kulcsa, hogy a könyvtárakat ne determinált, hanem dinamikus, komplex rendszerekként kezeljék, és ennek megfelelően vezessék. Az új könyvtári vezetőknek ezzel tisztában kell lenniük, és olyan képzést kell kapniuk, hogy inkább közvetítők legyenek, mint kontrollerek, és a változások létrehozására tudjanak összpontosítani, ahelyett, hogy szabályokat hoznának létre; figyeljék a jeleket, hallgassanak a rendszerre és környezetére, és lépjenek túl a merev, üzleties menedzseri megközelítésen.
O ensino de Geometria com parlendas: uma ação formativa
Authors: Alencar Edvonete Souza de , Cunha Aldrin Cleyde da , Cunha Janielle da Silva Melo da
Published: November 2020

Este artigo é resultado de uma formação continuada com professores, coordenador da instituição e alunos bolsistas do Programa Institucional de Bolsa de Iniciação à Docência (PIBID). As ações foram desenvolvidas no projeto do Laboratório Interdisciplinar de Formação de Educadores (LIFE) da Universidade Federal da Grande Dourados, em Mato Grosso do Sul, Brasil. Nosso objetivo foi o de promover a reflexão desse grupo formativo utilizando-se de recursos como: textos que se sabe de cor relacionando-os a atividades do conteúdo matemático, qual seja, Geometria. Evidenciamos assim a importância do uso de textos para o ensino interdisciplinar. A formação envolveu as seguintes atividades: embasamento teórico, apresentação de parlendas, dinâmica da parlenda cantada — brincadeira de pular corda, reflexão sobre que atividades podem ser realizadas, solicitação de representação por desenho da parlenda. Diante dessa formação, percebemos a necessidade de realizar ações formativas interdisciplinares e colaborativas, incentivando uma formação lúdica e prazerosa para o ensino de Geometria.
Prospects for implementing a new nurse model in capital healthcare: expected effects and possible risks
Authors: Aksenova Elena I. , Aleksandrova Olga A. , Yarasheva Aziza V. , Nenakhova Yulia S.
Published: November 2020

Increasing the role of nurses is one of the key trends supported by WHO and proven to be effective in many countries. Russia is also moving along this path: the relevant documents have been adopted, an experiment is underway in the pilot regions, and in 2020 further scaling of the new model of the nurse has been announced. The purpose of the study. Analysis of readiness to expand the functions of a nurse. Methodology. Content analysis of the information context dedicated to the implementation of the idea of expanding the functions of nurses; studying the experience in pilot regions; sociological research in the form of a mass survey of nurses and doctors, as well as a series of expert interviews. Results. At the level of an abstract idea, the expansion of the functions of nurses is welcomed by the majority of doctors and experts, but the possibility of its successful implementation in the current conditions raises serious doubts; the same applies to the prospects for achieving the declared goals - increasing the role of nurses and improving the quality of medical care. Discussion. There is both the noticeable interest of the medical community in this issue and the problems of an informational, organizational, technical, socio-psychological nature that can reduce the effect of the reform. Informational gaps or ambiguity in understanding the essence of the innovation by different groups of medical workers, as well as a range of concerns that exist in both the nursing and medical communities, were identified. The functions that can be transferred to nurses, as well as the conditions necessary for this, are considered. Conclusion. A serious professional analysis of the opportunities and risks contained in the new reform is required: various areas of medical activity have their specifics, without which the innovation can cause an acute negative response and a noticeable outflow of nursing staff from the capital’s medical organizations.
Social and economic determinants of the age structure of mortality from suicide in Russia
Authors: Semyonova Victoria G. , Ivanova Alla E. , Sabgaida Tamara P. , Zubko Alexandr V. , Mikhailov Alexandr Yu. , Evdokushkina Galina N. , Zaporozhchenko Vyacheslav G.
Published: November 2020

The purpose of the study is to analyze mortality from suicide in the post-Soviet Russia in terms of its age-related changes and determinants. Material and methods. The authors used data of the Federal State Statistics Service (Rosstat) calculated in the FAISS-Potential system (Factographic analytical information and statistical system) for the period 1989-2018 as well as age and standardized (European standard population) indices by death causes according to ICD-10. Results. During crises, the age structure of mortality from suicide is highly gender-specific. In males, there is a plateau of super mortality in working ages with a local (and sometimes absolute) maximum in persons aged 50-59 years; the difference from the non-crisis periods is mainly determined by young working ages. In females, the “crisis” age structure of suicide mortality is characterized by a stable upward trend without any pronounced maxima. Discussion. Comparing regions by mortality from officially registered suicide, on the one hand, and latent suicide (hanging, fall/jump from a height, and drug poisoning), on the other hand, substantiates objectivity of this problem - namely, a significant underestimation of mortality from suicide. The study shows the opposite groups of these regions to mirror each other, i.e. regions with low mortality from suicide are characterized by a significant latent suicide component. Conclusions. Dynamics in suicide mortality in the post-Soviet Russia was determined by its social and economic changes. A social determinant of mortality from suicide is reflected by its age structure: there is a significant increase in the risk of suicide in working-age groups during the crisis and super mortality among the working-age population in the disadvantaged territories even during non-crisis periods, while there is an opposite trend in the structure of suicide mortality in older ages. The general determinant patterns of the age structure of suicide mortality are distorted by its under-registration.
Improvement of institutions for dispensary observation of children from the risk group in phthisiology
Authors: Sharapova Olga V. , Brynza Natalya S. , Kicha Dmitry I. , Gerasimova Lyudmila I. , Slashcheva Daria M. , Pirogova Natalia D. , Petrushina Antonina D.
Published: November 2020

Introduction. Tuberculosis in Russia is one of the primary problems of epidemiology and public health. The purpose: to analyze the epidemic situation of tuberculosis in high-risk groups of children and adolescents in the Tyumen region of Russia. Material and methods. Were analyzed the annual reporting forms No. 33 «Information about patients with tuberculosis» for 2014-2018 in the Tyumen region. Results. According to our research, research materials in the region, WHO recommendations for eliminating tuberculosis by 2035 the need to develop new approaches and practical recommendations for clinical dispensary observation of children with altered tuberculin sensitivity is justified. Discussion. The epidemic situation among children with altered tuberculin sensitivity by 2018 in the districts of the Tyumen region is characterizing by its heterogeneity. In some districts of the region, the number of children with a turn of tuberculin reactions remains high or continues to increase. Such trends can be associated with the incidence of tuberculosis and the presence of patients with open forms of respiratory tuberculosis in these areas. Conclusion. To improve the efficiency of preventing the development of active tuberculosis in Russian children in 2010, a mathematical model of immune response developed in the Tyumen Region based on the study of immunological indices in groups of children with high sensitivity and hyperresponsiveness to the Mantoux tests 2TE samples. The model can be successfully used for diagnostics and assess the characteristics of the course of tuberculosis infection.
Walkability as the key element of urban planning within the Healthy Cities concept (systematic review)
Authors: Vosheva Nadezhda A. , Kamynina Natalya N. , Korotkova Ekaterina O. , Voshev Dmitriy V.
Published: November 2020

The purpose of the study. The purpose of this work is the exploration and generalization of scientific researches on walkability to determine its advantages as an element of public policy in human-centered cities. Over the past fifty years, the world community has actively discussed the issue of healthy and sustainable urban development planning, which has gained particular relevance with the recent World Health Organization publication of the “Healthy Cities: An Effective Approach to a Rapidly Changing World” concept (2020). One of the Healthy Cities approach goals is to promote healthy urban planning and design centered on human well-being (unlike prevalent in the past vehicle orientation), and the main component of such planning is pedestrianization or walkability. The systematic reviews and meta-analyses reporting method (PRISMA) were used in the review. The search was carried out in the bibliographic databases Elibrary, PubMed, MEDLINE, Scopus, Google Scholar. The study of the structure, types, and relationship between pedestrianization and the type of urban planning revealed the global advantages of creating walkable areas, such as maintaining the physical, mental and social health of citizens, increasing social capital, and improving the city’s ecological and economic atmosphere. Conclusion. Thus the promoting walkability was concluded to be a public policy as a relatively simple and highly effective way to benefit in the short, medium, and long term. This fact ultimately makes pedestrianization one of the most important tools for healthy urban planning and design.
FARKLI LOKASYONLARDA YABANİ BİTKİ TÜRLERİNDEN İZOLE EDİLEN BAKTERİLERİN TANISI VE AZOT FİKSE ETME, FOSFOR, POTASYUM VE KALSİYUM ÇÖZME ÖZELLİKLERİNİN BELİRLENMESİ
Authors: YILMAZ Songül , DÖNMEZ Mesude Figen , ÇORUH İrfan
Published: November 2020

Bu çalışmada, farklı illerden alınan 23 sağlıklı bitki örneğinden yapılan izolasyon sonucunda 246 bakteri straini elde edilmiştir. Tütünde yapılan HR testi ile bakteri strainlerinin patojen olmadıkları belirlenmiştir. Strainler Mikrobial Tanı Sistemi kullanılarak yağ asit metil analizi ile Arthbacter (17), Brevibacillus (12), Bacillus (65), Lysinibacillus (3), Herbaspirillum (7), Kocuria (21), Paucimonas (8), Pseudomonas (36) , Virgibacillus (3), Microbacterium (11), Micrococcus (8), Erwinia (4), Stenotrophomonas (8), Nesterenkonia (1), Achromobacter (1), Curtobacterium (5), Rhodococcus (7), Enterobacter (2), Escherichia (1), Chryseobacterium (1), Xanthomonas (3), Acinetobacter (5), Rothia (1), Paenibacillus (1), Ochrobacterium (1), Pantoea (1), Sphingbacterium (5), Rhizobium (3), Grimontia (1), Aeromonas (1), Brevundimonas (1), Phyllobacterium (1) ve Staphylococcus (1) olarak belirlenmiştir. Elde edilen bakteri strainleri azot fiksasyonu, fosfat, potasyum ve kalsiyum çözücü özellikleri bakımından test edilmiştir. Bunlar arasında Herbaspirillum huttiense (SK4, SK49), Microbacterium esteraromaticum (SK19, SK39, SY48), Achromobacter xylosoxidans (SK50), Paucimonas lemoignei (SK56), Pantoea agglomerans (SY43), Pseudomonas putida biotype B (YS2, DT17), Pseudomonas syringae pv. syringae (EP19) ve Pseudomonas pseudoalcaligenes (SA20) olmak üzere 12 tane strainin bütün testlerde pozitif sonuç verdiği, diğer strainlerin test sonuçlarının ise değişkenlik gösterdiği belirlenmiştir.