bluuebunny/crossref_metadata_2025 huggingface dataset:
Electronic versus Paper-based data collection for conducting health-care research: A cost-minimization analysis
Authors: Chaudhuri Sirshendu , Bagepally Bhavani Shankara , Bhar Ditipriya , Kumar S. Uday
Published: January 2021

Introduction- Containing expenditure and efficient resource use is essential to limit the increasing costs of health research. Electronic data collection (EDC) is thought to reduce the costs compared to paper-based data collection (PDC). Economic evidence in this area is scanty, especially in low and middle-income countries. Hence, an economic evaluation was conducted to compare the cost between EDC and PDCMethods- A cost-minimization study was conducted to compare between EDC and PDC from the institutional perspective for the year 2018, based on a community-based survey. Step-down cost accounting was adopted with a bottom-up approach for cost estimation. Total and unit costs were estimated with the base case comparison between EDC and PDC while using SPSS software (e-SPSS and p-SPSS, respectively). We conducted scenario analyses based on usage of different software, R and STATA for both EDC and PDC (e-R, p-R, e-STATA and p-STATA respectively). One-way and probabilistic sensitivity analysis (PSA) was performed to examine the robustness of the observed results. Results- In the base-case analysis, total costs of EDC and PDC were ₹72,617 ($1060.9) and 87,717 ($1281.5) respectively- with estimated cost minimization of ₹ 15,100 ($220.6). In other scenarios, the estimated cost minimization for e-R, e-STATA, p-R, p-STATA were ₹ -274 ($4.0), 98 ($1.4), 14826 ($216.6), and 15,002 ($219.2) respectively when compared to EDC-SPSS. On one-way and PSA, the results of the cost-minimization analysis were robust.Conclusion- The EDC minimizes institutional cost for conducting health research. This finding will help researchers in planning for the budget for their research to use the resources efficiently
Structure based virtual screening, molecular docking and molecular dynamics simulation of drug like small molecules against cell cycle regulator enzyme FtsZ of Mycobacterium tuberculosis
Authors: Mohanty Partha Sarathi , Singh Roopendra , Pawar Nisha , Gogoi Chayanika , Sharma Sandeep , Pawar Harpreet Singh , Mohanty Keshar Kunja
Published: January 2021

Tuberculosis is a major public health problem in several developing and low income countries. It warranted 1.2 million deaths around the world in 2019. An active Tb patient can spread a large number of bacilli to the environment by coughing, spitting, speaking and sneezing which in turn help in development of new Tb cases. Further development of drug resistant strains of Mycobacterium tuberculosis to most powerful first line drugs viz., rifampicin and isoniazid put a hurdle in Tb elimination programme. Thus it is essential to explore new drug molecules to fight against Tb morbidity and mortality. In the present study an attempt has been made to screen new small drug like molecules using structure based molecular screening. 3D structure of cell cycle regulator enzyme FtsZ (PDB ID: 1RLU) was retrieved from the Protein Data Bank website and used it for structure-based virtual screening of drug like small molecules from PubChem database. The screened drugs were re-docked with FtsZ of M. tuberculosis to find out their affinity and antagonistic effect against M. tuberculosis. Molecular dynamics simulation studies were carried out for each of the docked complex to find out the stability and flexibility of the docked conformations. In silico ADME study was carried out to find out the drug likeliness of the selected molecules. A total of 1501 drug like small molecules were recovered through virtual screening of which three molecules, viz., Lig-24284406, Lig-49671233 and Lig-24791139 were taken for the docking study. It was observed that the selected drug molecules had a strong affinity towards the FtsZ. This was evident from the binding energy of the drug molecules towards FtsZ (-7.23, -9.67 and -5.51). The strong stability and flexibility of the docked structures were also evident from RMSD values i.e, < 2 Å and RMSF value i.e, > 1 Å for all the docking complexes. The present study suggested that three small drug like molecules could be taken for further clinical studies to find their efficacy against tuberculosis.
Detection and follow-up of chronic health conditions in Rio de Janeiro – the impact of residency training in family medicine
Authors: Jantsch Adelson , Burström Bo , Nilsson Gunnar , de Leon Antônio
Published: January 2021

There is a need for evidence that residency training in family medicine (RTFM) can benefit the care of patients in primary care in low- and middle-income countries. We tested the hypothesis that two years of RTFM enables doctors to better detect chronic health conditions (CHC) while requesting fewer laboratory exams and providing more follow-up visits. We performed a retrospective longitudinal observational analysis of medical consultations from 2013 to 2018 in primary care in Rio de Janeiro, comparing doctors without RTFM (Generalists) versus family physicians (FPs). Multivariate multilevel binomial regression models estimated the risks of patients being diagnosed for a list of 31 CHCs, having a follow-up visit for these CHCs, and having laboratory tests ordered from a list of 30 exams. 569.289 patients had 2.908.864 medical consultations performed by 734 generalists and 231 FPs. Patients seen by FPs were at a higher risk of being detected for most of the CHCs, at a lower risk of having any of the 30 LTs requested, and at higher risk of having a follow-up visit in primary care. RTFM can make physicians more skilled to work in primary care. Policymakers must prioritize investments in RTFM to make primary care truly comprehensive.
The impacts of Chinese drug volume-based procurement policy on the volume and expenditure of antibiotic drugs
Authors: Yang Ying , Chen Lei , Ke Xinfeng , Mao Zongfu , Zheng Bo
Published: January 2021

Background: In 2019, Chinese government implemented the first round of National Centralized Drug Procurement (NCDP) pilot (so-called "4+7" policy) in mainland China, in which an oral antibiotic agent (cefuroxime axetil) was included. Given the current condition of the irrational use of antibiotics in China, this study aims to evaluate the potential effect of the "4+7" policy on antibiotic use. Methods: This study used drug purchasing order data from the Centralized Drug Procurement Survey in Shenzhen 2019, covering 24 months from January 2018 to December 2019. Oral antibiotic drugs related to "4+7" policy were selected as study samples, including cefuroxime axetil and its alternative drugs. Segmented linear regression analysis with interrupted time series was adopted to examine the effect of "4+7" policy on the volume and expenditure of antibiotic drugs. Results: Compared with April to December 2018, the total volume and expenditures of cefuroxime axetil and its alternative antibiotic drugs from April to December 2019 increased 41.8% and 18.1%, respectively. The results of segmented linear regression showed that the volume of cefuroxime axetil products significantly increased 161.16 thousand DDDs after "4+7" policy (95% CI: 59.43 to 262.90, p-value = 0.004). For the alternative drugs of cefuroxime axetil, the volume and expenditures significantly increased 273.65 thousand DDDs (95% CI: 90.17 to 457.12, p-value = 0.006) and 3471.66 thousand RMB (95% CI: 1529.70 to 5413.62, p-value = 0.001), respectively. Conclusion: This study provides evidence that the implementation of "4+7" volume-based procurement policy was associated with significant increases in the volume and expenditure of cefuroxime axetil and its alternative drugs. The increase in antibiotic use after the policy needs special attention and vigilance.
The potential risk of contralateral non-sentinel groin node metastasis in women with early primary vulvar cancer following unilateral sentinel node metastasis: a single center evaluation in University Hospital of Düsseldorf
Authors: Winarno Andreas Suhartoyo , Mondal Anne , Martignoni Franca Christina , Fehm Tanja Natascha , Hampl Monika
Published: January 2021

Background: Since the introduction of sentinel node biopsy (SLNB) in unifocal vulvar cancer (diameter of < 4cm) and unsuspicious groin lymph nodes, the morbidity rate of patients has significantly decreased globally. In contrast to SLNB, bilateral inguinofemoral lymphadenectomy (IFL) has been associated with increased risk of common morbidities. Current guidelines (NCCN, ESGO, RCOG, and German) recommend that in cases of unilaterally positive sentinel lymph node (SLN), bilateral IFL should be performed. However, two recent publications by Woelber et al. and Nica et al. contradict the current guideline, since a significant rate of positive non sentinel lymph nodes in IFL contralaterally was not observed (Woelber et al. 0% (p=0/28) and Nica et al. 5.3% (p=1/19)). Methods: A retrospective single-center analysis conducted in the University Hospital of Dusseldorf, evaluating vulvar cancer patients treated with SLNB from 2002 to 2018. Results: 22.2% of women (n=4/18) were found to have contralateral IFL groin metastasis after an initial diagnosis of unilateral SLN metastasis. The depth of tumor infiltrating cells correlated significantly and positively with the rate of incidence of groin metastasis (p=0.0038). Conclusion: Current guideline for bilateral IFL should remain as the standard management. Therefore, this depth may be taken into account as an indication for bilateral IFL. The management of VC and SLNB should be performed in a high volume center with an experienced team in marking SLN and performing the adequate surgical procedure. Well conducted counseling of the patients outlining advantages but also potential oncological risks of this technique especially concerning rate of groin recurrence is critical.
Input-Output Types of Fifteen Modules on Discrete and Real Measurements for COVID-19
Authors: Zheng Jeffrey , Zhu Minghan
Published: January 2021

Fifteen modules in the MAS provide unique functions to support wider applications. It is important to describe this set of transformation schemes from input genomes and output results using visualable numbers to briefly explain the transformation mechanism involved in each module. In this paper, vectors, matrices and various measurements are described following each module. From a genomic sequence, there are two types of outputs for three groups: 1) groups A & B related to discrete measurements represented in either vectors or matrices; 2) groups C related real measurements linked to entropy indices restricted in a limited line segment or a certain square region as a hierarchical organization. The main transformations and projections are described. Sample distributions and genomic index maps are illustrated.
Visual Representation of SARS-CoV-2 Genomes in Multiple Regions on Integrated Maps
Authors: Zhu Minghan , Zheng Jeffrey
Published: January 2021

This paper represents visual results for the B2 module of the MAS. Using four meta genetic variables, multiple probability measures are extracted. Variations between pairs of virus genomes could be measured. From a macroscopic viewpoint, measures can be organized in a set of 16 × 16 with (m+ 1)2 density matrix in combinations with supersymmetric properties. In view of the different types of coronary virus samples, various pairs of genomes make different projections under multiple levels of hierarchical forms of quantization matrix. Under proper selection, huge numbers of variations could be performed. Applying this transformation, a list of sample results are generated to illustrate intrinsic symmetric maps associated with selected parameters. Since this is an initial exploration, further explorations on theoretical foundation and specific applications are essential to support applicable theory and the systematic expansion on medical applications for COVID-19 patients.
Visualizations of Combinatorial Entropy Index on Whole SARS-CoV-2 Genomes
Authors: Zheng Jeffrey , Zhou Yang
Published: January 2021

In this paper, a set of SARS-CoV-2 genomes from four countries are selected for visualizations under the C1 modules of the metagenomic analysis system MAS. Based on the variant construction and the theory of information entropy, the module makes statistics on the number of bases in SARS-CoV-2 sequences to calculate the base probability measures in segments to generate the combinatorial entropy index data from the base probability measures. Under visualization technology, the combinatorial entropy index is projected on 2D clustering genomic index maps and 1D histogram maps to provide projection results. The visual results provide intuitive and easy properties to analyze complicated clustering among genomes to support clustering analysis of SARS-CoV-2 genomes in batches, showing the distribution characteristics of SARS-CoV-2 genomes in different countries or regions conveniently.
2D Visual Analysis of SARS-CoV-2
Authors: Wu Ruoxue , Qiao Mu , Zheng Jeffrey
Published: January 2021

COVID-19 is outbreaking in worldwide. It caused millions of infections, killing hundreds of thousands of people and making all countries loss immeasurable trade. For finding the secret of SARS-CoV-2, researchers need to analyze various variation information such as multiple coronaviruses in different times over distinct countries. In this paper, the metagenetic analysis system MAS is used to analyze SARS-CoV-2 genomes collected from different countries as input datasets, and special genomic indices are provided to be a global characteristic quantity based on the A1 and C1 modules of the MAS for visualizations. In this method, one RNA sequence is split into M segments and counting the number of genetic probability measures for 16 combinations of four genomic symbols. After statistical probability processes, each probability distribution can be transferred into an entropy quantity on both 2D and 1D histograms to show these results for all collected genomes. Under this approach, a pair of combinatorial entropies determine a 2D genomic index map to generate a heatmap for more massive clusters of genomes with similarity contents to provide basic quantitative in variants to organize further collected genomes as a construction of a phylogenetic tree. Further explorations are required.
Cluster Analysis of Visual Differences on Pairs of SARS-CoV-2 Genomes
Authors: Zhu Minghan , Zheng Jeffrey
Published: January 2021

This paper represents sample results for the C2 and C3 modules of the MAS. Genomic index maps were generated for SARS-CoV-2 genomes from different samples worldwide, and eleven other viral genomes were selected for comparisons. Each 2D genomic index map acts as a pair of X-Y coordinate scatter points located in a specific geometric region restricted. Supported by the principle of entropy invariance and visual distributions, it is convenient to identify the variations of SARS-CoV-2 genomes in the global scope. In view of this powerful transformation structure, future exploration of the detailed systematic expansion of theory and medical applications for COVID-19 patients is required.
Mutational Analysis of SARS-CoV-2 Genomes in Key Cities of China
Authors: Cui Qiwei , Zheng Jeffrey
Published: January 2021

From December 2019, SARS-CoV-2 induced pneumonia broke out in Wuhan and then spread rapidly from multiple resources to other provinces and other cities in China. In this paper, genomes collected in four Chinese cities: Wuhan, Guangzhou, Shanghai, Hangzhou were analyzed as the A1 module of the MAS. Starting from the virus gene sequence itself, multiple probability statistics are applied to extract characteristics from virus genomes. Variations of genomes can be compared and visualized in such conditions. It is interesting to see various similar and different properties visualized under various groups after transformations. In this way, key mutation characteristics could be observed and this type of results is helpful for further scientific researches on COVID-19 applications.
2D Similarity Map of Multiple Coronavirus Gene Sequences
Authors: Zheng Huaxian , Zheng Jeffrey
Published: January 2021

The outbreak of a novel coronavirus (SARS-CoV-2) in many countries in the world from late 2019 to 2020 resulted in millions of infected people, and caused serious damage to the social environments with significant changes in human power and material resources in the world. The novel coronavirus is an RNA virus. RNA mutation is common in nature. This makes it extremely difficult to develop a virus vaccine in a short period. The evolution of the virus has been in a mutation state, in which a certain sequence changes associated with time and environments in similar distributions. A larger number of genomes were collected in various open source databases for scientists in further explorations. In this paper, a 2D similarity comparison scheme on the A2 module of the MAS is proposed for extracting internal information among a genome undertaken M segment partitions to provide visual results based on probability measures and quantitative statistics. First, a genome is segmented into corresponding numerical transformations, and then four numbers of meta symbols in each segment are counted. Corresponding probability measures are calculated. Second, the probability is transformed into polar coordinates, and the polar coordinates are mapped into a M × M matrix. Then, a 1D genome can be processed into 2D measures with similarity properties in sequence. Through this correlation matrix, relevant similarity results are analyzed.
Protein Coding of Variations on SARS-CoV-2 Genomes in Various Regions
Authors: Li Tao , Zheng Jeffrey
Published: January 2021

In this paper, COVID-19 cases in different regions are used for comparison. The related genomes of SARS-CoV-2 are segmented and replaced with sequence operations under protein coding scheme on the A3 module of the MAS. Using protein coding schemes, genomes are transformed and projected as measuring sequences as a vector that can be visualized in maps from two different perspectives: the elements of the gene sequence and the position of the element sequence, so as to interpret the genome more comprehensively. Through a series of linear diagrams, it is convenient to compare and analyze the genomes of the samples collected in different regions more intuitively, which may be conducive to further data mining of genomic information and refined explorations of COVID-19 for patients.
Similarity Comparison of Multiple Coronavirus Sequences from 2D to 1D Linearizing Transformation
Authors: Deng Feng , Zheng Jeffrey
Published: January 2021

Many studies on COVID-19 have been carried out, and it is interesting to apply methods and models to process the whole sequence of RNA. Similarity comparison of SARS-CoV-2 genomes plays a key role in naturally tracing its ori-gin in scientific exploration, and further explorations are required. In this paper, an innovative of transformation from a 2D density matrix to 1D measuring vector is proposed based on the A5 module of the MAS for visualization. The core transformation projects whole RNA sequences of multiple coronaviruses in 2D matrices and then forms 1D measuring vectors on variant maps. The relationships of SARS-CoV-2 genomes are compared by their similarity properties and genomic index of entropy quantities applied to classify relevant results into groups.
Momentum Distribution of SARS-CoV-2 Sequences on Variant Maps
Authors: Li Xinmei , Zheng Jeffrey
Published: January 2021

Applying momentum measures and probability distributions, a visual scheme is proposed in this paper to transfer SARS-CoV-2 genomes to two distinct maps to be the A6 module of the MAS. Based on collected datasets of SARS-CoV-2 on different countries as examples, relevant characteristics and correlation of probability distributions are described. In visualization of two patterns under momentum measurement, there are two visual forms of Pattern 1 and Pattern 2. Two forms are generated from the same sequence on different focuses. Pattern 1 describes the momentum distribution of a segment accounting for whole genomes, and Pattern 2 visualizes the differences in momentum distributions on various segments. This is a new type of analysis measurement to explore complex connections and differences among sets of SARS-CoV-2 genomes for their availability.
Functional Group Decomposition of Multiple Coronaviruses on Variant Maps
Authors: Du Liuyun , Zheng Jeffrey
Published: January 2021

Different coronaviruses can be identified as three categories: common coronaviruses, fatal coronaviruses, and domestic coronaviruses. It is convenient to generate various visual results for their RNA sequences on variant maps. In this paper, a functional group measurement method is proposed to combine discrete mathematics and computational technologies on the A2 module of the MAS. Various samples are processed by this scheme and interesting results can be observed. The projections of the segmented groups on each coronavirus compared with the projective effects on different coronaviruses in 2D maps of coordinate systems are shown by statistical measures on the density matrix with similarity and dissimilarity properties for further exploration.
Visualizations of Multiple Probability Measures for SARS-CoV-2 Genomes
Authors: Yao Tan , Zheng Jeffrey
Published: January 2021

SARS-CoV-2 genomes are collected from various open source genomic banks. A set of SARS-CoV-2 genomes are selected for visualization under both the A3 and C1 modules of the metagenomic analysis system MAS. Multiple probability measures are mapped as relevant 1D histograms, and it is convenient to observe distinct differences among various distributions to organize similar patterns into relevant groups. Sample genomes were processed, and their visual results were illustrated.
INVESTMENT DECISION, MARKET CAPITALIZATION, AND COMPANY VALUE
Authors:   Faculty of Economics Universitas Negeri Gorontalo., Dama Hais , Franssisca Dungga Meriyana ,   Faculty of Economics Universitas Negeri Gorontalo., Salma Hasiru Firdza ,   Faculty of Economics Universitas Negeri Gorontalo.
Published: January 2021

A company that canincrease its value will also be able to improve the well-being of the owner or the shareholders. To a company that issues stocks in the capital market, the stock price in the stock exchange is the indicator of a companys value. Good company value is identified from the companys performance it is also identified from the stable or increasing stock price.This present study analyzed the influence of investment decision and market capitalization on company value. It involved companies listed in the Jakarta Islamic Index (JII), and aimed to formulate a matter of consideration for investors. A quantitative descriptive method was employed to investigate the correlation and influence between variables. The result showed that: (1) investment decisionpartially influenced company value with regression coefficient value of 1.721 and significance value of 0.000 (2) market capitalization partially influenced company value with regression coefficient value of -0.163 and significance value of 0.041 (3) investment decision and market capitalization simultaneously influenced company value of companies listed in the JII with f-count value of 330.698 and significance value of 0.000. Moreover, the adjusted R2 test acquired value of 0.924. The number indicated that company value was influenced by investment decisionand market capitalization by 92.4 percent, while the rest 7.6 percent was due to other variables.
PANDEMIC SCENARIO OF TAMLUK IN PURBA MEDINIPUR DISTRICT
Authors:   Assistant Professor, Haldia Government College, West Bengal.India., Samanta Sipra
Published: January 2021

At the end of the last year, 2019 a pneumonia/ SARS like respiratory disease broke out Wuhan, the largest metropolitan area in Chinas Hubei province. It started in the month of December.On Feb 11, 2020, the WHO Director General announced that the disease is caused by a new variety of corona virus.The disease was called COVID-19 or Corona virus disease 2019. Corona virus is large, roughly spherical particles with tuberous surface projections. The objective of this paper is to increase awareness regarding COVID-19 among the people at Tamluk sub-division of purba Medinipur district of West Bengal in India. This paper highlights about different problems such as economical, social, educational and mental during pandemic period in Tamluk sub-division. Preventive strategies are (a) to wash hands frequently with a soap (b) to use personal protective equipment (PPE) such as FFP3 or N95 mask, disposable gown and gloves, (c) to maintain social distancing or avoid close contact with others (d) to avoid touching eyes, nose and mouth, (e) medical care for breathing problem (f) to admit local hospital for fever, coughs or sneezes (g) to avoid public gatherings (h) to stay home etc. The COVID-19 pandemic is spreading day after day all over the world. An immediate discovery of approved Vaccine is required to protect people against this disease.
IMPACT OF GESTATIONAL DIABETES MELLITUS ON CHILD BIRTH
Authors:   Pharm.D Intern, Department of Pharmacy Practice., Gloria Grant C.J Glady , Jose Cindy ,   Assistant Professor, J.K.K Nattraja College of Pharmacy, Kumarapalayam 638183, Tamilnadu, India., N Venkateswaramurthy ,   Professor, Head & Department of Pharmacy Practice, J.K.K Nattraja College of Pharmacy, Kumarapalayam 638183, Tamilnadu, India., Kumar R Sambath ,   Professor, Head & Department of Pharmaceutics, J.K.K Nattraja College of Pharmacy, Kumarapalayam 638183, Tamilnadu, India.
Published: January 2021

GestationalDiabetesMellitus(GDM) is an irregular glucose tolerance condition that developsfirst and is recognized during pregnancy.The Oral Glucose Tolerance Test (OGTT) is the gold standard for the diagnosis of this disorder from 24 to 28 weeks. A number of adverse results, including gestational hypertension, cardiovascular disease and preeclampsia, havebeen associated with pregnant women. As for maternal glucose levels in the second or third trimester the risk of adverse outcomes drastically increases, even within ranges previously considered normal for pregnancy. Excessive gestational weight gain in women with GDM, it is very normal and closely correlated with lifestyle factors during pregnancy. High fat consumption particularly saturated fat, trans fat and cholesterol, increases GDM risk. A higher intake of added sugar and lower intake of vegetable and fruit fiber are independently linked to increased fasting glucose. Animal protein consumption is positive and vegetable protein is inversely related to the risk of GDM.Since fetuses and infants are particularly vulnerable to the effects of toxic compounds, attempts should be made during the years well before childbearing to reduce the exposure of girls and women to dioxins in food, so that fewer quantities of these compounds accumulate in their bodies and are passed on through the placenta and breast milk.The key sources of exposure for most people are fats in meat, food, fatty fish, whole milk and full-fat milk products and their intake should be reduced.
JAMMINGIMMUNITY RESEARCH OF A RADAR OPERATING WITH CHIRP SIGNAL
Authors:   Logistics Department, Command and Staff Faculty, Rakovski National Defense College, 1504 Sofia, Bulgaria., Ivanov Spassov Sevdalin
Published: January 2021

Pulse compressed signal enhances the jamming immunity of a radar operating with such a signal. The matched filter is one of the most important elements in the pulse compression technique. A model of a matched filter for a chirp signal was synthesized using the Simulink tool of the Matlab software. Interference signals were feed to the input of the matched filter and output signals were measured. The matched filters degree of suppression of these interference signals was assessed. Conclusions were made about the jamming immunity of radar operating with chirp signal.
JAMMINGIMMUNITYRESEARCH OF A RADAR OPERATING WITH BARKER CODED PHASE MODULATED SIGNAL
Authors:   Logistics Department, Command and Staff Faculty, Rakovski National Defense College,1504 Sofia, Bulgaria., Ivanov Spassov Sevdalin
Published: January 2021

The matched filter is one of the most important elements in the pulse compression technique. Pulse compressed signal enhances the interference immunity of a radar operating with such a signal. A model of the matched filter for a Barker coded phase modulated signal was synthesized using the Simulink tool of the Matlab software. Interference signals were feed to the input of the matched filter and output signals were measured. The matched filters degree of suppression of these interference signals was assessed. Conclusions were made about the jamming immunity of radars operating with Barker coded phase modulated signal.
SYNTHESIS, CHARACTERIZATION AND PHOTOLUMINESCENCE PROPERTIES OF EU3+DOPED CALCIUM SILICATE PHOSPHOR BY CONVENTIONAL SOLID STATE REACTION METHOD
Authors:   Department of Physics, Bapatla College of Arts and Sciences, Bapatla - 522101, A.P, India., Atchyutha Rao Ch. , Murthy K.V.R. ,   Display Materials Laboratory, Applied Physics Department,Faculty of Technology and Engineering, M. S. University of Baroda, Vadodara-390001, India.
Published: January 2021

Calcium Silicate phosphor acquires a higher luminous efficiency when it is doped with rare earth activated ions. Silicate phosphors are used for a fluorescent, a cathode-ray tube, a luminous body, a vacuum ultraviolet excitation light emitting element etc. The silicates of calcium are known for their thermal stability, high temperature strength, low thermal expansion, cheep residence and chemical inertness. The present paper reports on the synthesis, characterization and photoluminescence properties of Eu3+ doped calcium silicate phosphor prepared by conventional solid state reaction method heating at 12000C for 3 hrs. The received cakes are grounded for 30 minutes each. The phosphors are prepared and the received powder is subjected to PL, XRD, SEM, EDAX and CIE analysis. The following section discusses and the experimental results are mentioned in these phosphors. The present Phosphor can act as a host for red light emission in many display devices and technological applications.
ENGLISH LANGUAGE IN THE VIEW OF TEACHERS OF ENGLISH: A RESEARCH SURVEY
Authors:   Assistant Professor Department of English Government Post Graduate (Lead) College, Sheopur District, Sheopur, Madhya Pradesh, India., Khan Javed
Published: January 2021

English has a vital role in not only in corporate sector but in education as well thats the reason English language is being taught in India throughout the classes. After completion of college educations students need to appear in interview for getting jobs and for getting the jobs of corporate sector candidates must have a good command over English language written and spoke as well. Whenever an organization requires having a business relation outside the country, their preferred language will be English. And they will have a further communication in English only thats why English has become language of corporate sector.
ANTIMICROBIAL SENSITIVITY PATTERN OF ESCHERICHIA COLI ISOLATES FROM VARIOUS CLINICAL SAMPLES IN A TERTIARY CARE HOSPITAL
Authors:   Professor Microbiology Department., S. Wyawahare Anupama , K Mishra Jyotsna ,   Assistant Professor Microbiology Department., V. Mulay Manjushree ,   Professor and Head, Microbiology Department.
Published: January 2021

E Coli is the most commonly encountered human pathogen which has been associated with various clinical manifestations.Analyzing resistance pattern of Escherichia coli to commonly prescribed antibiotics helps to decide empirical therapy.The study was conducted from January 2015 to December 2018.Total of 2135 E coli isolates were recovered from various clinical specimens .In our study antimicrobial susceptibility pattern of 1925 E coli isolates was studied Maximum no of E coli were isolated from urine 867 [40.60%] followed by skin & soft tissue specimens 691 [32.36%],stool specimens 179 [8.38%] , Respiratory Tract specimens 129[6.04%] , and blood 59 [2.76] .Out of 867 E coli isolates from urine specimens maximum susceptibility was found against Fosfomycin 806 [92.96 %] followed by Amikacin 753 [86.85 %], Ertapenem 702[80.96%], Gentamicin 563[64.93 %] and Nitrofurantoin 518[59.74% ]Most isolates of E coli from UTI, SSTI, RTI, BSI are susceptible to Carbapenems , Amikacin and CefoperazoneSulbactam..Increasing resistance to oral antimicrobial agents is a serious issue.Improved facilities for microbiology laboratories and judicious use of antimicrobial agents is need of the hour.
Vibration performance prediction and reliability analysis for rolling bearing
Authors: Meng Fannian , Gong Xiaoyun , Du Wenliao , Wang Liangwen , Zhao Feng , Li Liwei
Published: January 2021

The bearing vibration signal is a rich dynamic symptom of bearing wear, and the vibration signal of rolling bearing presents chaotic characteristics. Input and output variables of vibration signal can be constructed through phase space reconstruction, the Input and output variables can be imported into the prediction model for prediction. The prediction accuracy of the extreme learning machine (ELM) model, Kriging model and RBF model are compared, the results show that ELM has higher accuracy, so ELM chaos model is used to predict the future vibration time series data, and the forecasting error can be obtained by comparing the prediction value with the actual values so as to verity the feasibility of the ELM model. The prediction results of the future state of the bearing are processed as the grey-bootstrap method, and the performance reliability prediction of the bearing is realized by the Poisson counting process. The experimental data show that with the deepening of the fault degree, the reliability performance decreases gradually. The reliability performance of the bearing without fault is 100 %, and the reliability performance is 47.56 % when the inner ring faulty size is 0.72 mm.
Design of an automatic hydro-meteorological observation network for a real-time flood warning system: a case study of Vu Gia-Thu Bon river basin, Vietnam
Authors: Nguyen Liem D. , Nguyen Hong T. , Dang Phuong D. N. , Duong Trung Q. , Nguyen Loi K.
Published: January 2021

This paper presents an interdisciplinary approach, along with Vietnam's legal frameworks, to design an automatic hydro-meteorological (HM) observation network for a real-time flood warning system in Vu Gia-Thu Bon (VGTB) river basin, Vietnam. The automatic HM monitoring network consists of weather-proof enclosures containing data loggers, rechargeable batteries, sensors for air temperature, air humidity, solar radiation, wind speed, water level with attached solar panels and mounted upon masts located at fixed ground stations. A total of 20 meteorological stations and five hydrological stations have been built in VGTB river basin. To capture changes in weather and stream flow in the basin, the 5-minute and half-hour recording frequency options were set for meteorological and hydrological variables, respectively. All HM data was transmitted every 30 minutes to the data server at the data processing centre via Global System for Mobile Communications (GSM)/General Packet Radio Service (GPRS) network. These data were then input into hydrological-hydraulic models for inundation simulation in the basin. The results showed that the performance of flood simulation at hourly time step has significantly improved during flood events in September and November 2015. Overall, near-real-time HM data recording from an automatic monitoring network proved beneficial for an flood early warning system.
Winter warming detection using temperature and precipitation anomalies in arid and semi-arid areas
Authors: Siabi Negar , Baygi Mohammad Mousavi , Hasheminia Seyed Majid , Bannayan Mohammad
Published: January 2021

Extreme winter warming can affect many aspects of environmental and human related activities. It can be disastrous, especially in arid regions. However, no specific research has been carried out on detecting winter warming in Iran. To address this research gap, this study was performed to investigate winter warming in the arid and semi-arid areas located in northeastern Iran. For this purpose, anomalies of minimum and maximum daily temperature, average daily temperature, mean daily temperature range and mean daily precipitation were studied on monthly, seasonal, annual and decadal scales. Along with this, the trend in the data was analyzed using the Mann–Kendall (MK) test. The results showed that since the 1990s there has been a significant increase in temperature positive anomalies at most stations. In addition, the precipitation anomaly mutations occurred later than temperature. In most cases the increase in winter anomalies was higher than the average annual anomalies. As an example, the maximum winter temperature anomaly increased from 0.38 °C in the 1990s to 2.07 °C in the 2000s at Mashhad station. Due to the simultaneous increase in anomalies at most stations, the detected winter warming is more likely to be the result of global warming rather than local synoptic climate.
Varia
Authors: GT gt
Published: January 2021

Varia - Documentaire fiche.
Vraag en Antwoord GT01_11.
Authors: GT gt
Published: January 2021

V&A - Gent in de periodieke pers - Gent in de spiegel van zijn dagbladen - bibliografische sprokkelingen.
Vraag en Antwoord GT01_5.
Authors: GT gt
Published: January 2021

en verder Echo's ... Reacties ... Varia - Gent in de spiegel van zijn dagbladen
Vraag en Antwoord GT09_6.
Authors: GT gt
Published: January 2021

en varia - Gent in de spiegel van zijn dagbladen - bibliografische sprokkelingen enz
De aktie in verband met het Geeraard Duivelsteen.
Authors: GT gt
Published: January 2021

We danken allen, die tussengekomen zijn om het behoud van het Gents kunstpatrimonium te verzekeren. Toch durven we verdere waakzaamheid vragen, opdat een gebeurlijk nieuw gebouw de omgeving van het Geeraard Duivelsteen niet zou ontsieren.
Het gebouw van de Koninklijke Nederlandse Academie.
Authors: GT gt
Published: January 2021

Op de plaats van de Koninklijke Nederlandse Academie stond vroeger een steen uit de 14e eeuw. De oudst bekende eigenaar van dit steen is Lieven Damman, heer van Oombergen.
In memoriam dr. Paul Rogghé.
Authors: GT gt
Published: January 2021

Dr. Paul Rogghé, ere-voorzitter van de Heemkundige en Historische Kring "Gent" overleed op maandag 24 juni 197 4 in het AZ. te Gent. Paul Rogghé werd geboren te Gent op 16 december 1904.
Te Gent.
Authors: GT gt
Published: January 2021

Op 1 januari 1977 werd Gent de grootste stad van België.Te Woluwe-Sint-Lambert overleed op 25 october 1976 mevr. Sirnone Bergmans.In november 1976 vierde de Rotary-club van Gent zijn vijftigjarig bestaan.De militaire bakkerij achter de Sint-Pietersabdij werd einde 1976 afgebroken.Vraag en antwoord GT06_1BibliografieTijdschrift "ons heem"Toen de Franse koning de Gentse Witte Kaproen droeg!
Te Gent.
Authors: GT gt
Published: January 2021

Op 3 maart 1977 overleed te Gent apotheker Edmond BoonenDe vereniging Sint-Franciscus Regis staakte haar bedrijvigheid op 19 maart 1977Het hotel d'Haene-Steenhuyze in de Veldstraat, thans nog in gebruik door de firma Dangotte, komt overkort ledig.
Straatnamen (1-4).
Authors: GT gt
Published: January 2021

De persoonsnamen zullen slechts bondig worden behandeld. Zo mogelijk wordt verwezen naar de bibliografie.Fris Victor : De Historische Persoonsnamen der straten van Gent. (FRIS)Biographie Nationale (B.N.)Biografisch Woordenboek (B.W.)Liber Memorialis (hoogleraars) (L.M.)Winkier Prins Encyclopedie van Vlaanderen (W.P.)Ghendtsche Tydinghgen (G.T.)
Спин-поляризованный электрический ток в нанокомпозите Cd-=SUB=-48.6-=/SUB=-Mn-=SUB=-11.4-=/SUB=-As-=SUB=-40-=/SUB=-
Authors: Сайпулаева Л.А. , Пирмагомедов З.Ш. , Гаджиалиев М.М. , Алибеков А.Г. , Мельникова Н.В. , Захвалинский В.С. , Риль А.И. , Маренкин С.Ф.
Published: January 2021

В нанокомзозите Cd48.6Mn11.4As40 в интервале температур 10-350 K впервые измерены температурные зависимости электросопротивления и намагниченности. Показано, что электрофизические свойства Cd48.6Mn11.4As40 обусловлены спиновой поляризацией собственных электронов в матрице Cd3As2 спин-поляризованными электронами, инжектируемыми в нее из ферромагнитных нанокластеров MnAs. С ростом намагниченности всего образца, угол между намагниченностями отдельных нанокластеров уменьшается и спин-поляризованный ток возрастает. Кроме того, повышение концентрации собственных носителей в матрице приводит к увеличению спин-поляризованного тока. Эта концепция подтверждается и измерениями вольтамперных характеристик (ВАХ) при напряжениях до 5 V при температурах как ниже критической температуры образования кластерного стекла Tcg=241 (при 77 и 172 K), так и выше нее (при 273.15 и 373.15 K), которые обнаруживают отклонение от омичности, возрастающее с напряжением. Это означает, что чем больше спиновая поляризация собственных электронов в Cd3As2, вследствие увеличения инжекции спин-поляризованных электронов из MnAs с напряжением, тем больше ток. Ключевые слова: спин, нанокомпозиты, вольт-амперные характеристики, сопротивление, спиновая поляризация, полупроводники, спиновая инжекция, намагниченность.
Две стадии роста кластеров La-=SUB=-0.7-=/SUB=-Sr-=SUB=-0.3-=/SUB=-MnO-=SUB=-3-=/SUB=- в магнетронной плазме при модуляции потока частиц ионно-звуковой волной и осаждении его на стекло
Authors: Окунев В.Д. , Самойленко З.А. , Szymczak H. , Дьяченко Т.А. , Пушенко Е.И.
Published: January 2021

The films with amorphous structure obtained by magnetron sputtering of La0.7Sr0.3MnO3 target were investigated, which made it possible to study the kinetics of clusterization of magnetron plasma during the movement of a flow of interacting particles with the formation at first of local atomic configurations of the pre-cluster level (the first stage of clusterization) and subsequent deposition of the flow on an extended glass substrate (the second stage of the formation of multi-scale clusters). It is shown that the non-monotony in the change of atomic order and properties of the samples with distance from the target is related to the presence of heterovalent manganese ions in the flow and their spatial modulation by an ion-acoustic wave. It was found that the Mn3+ and Mn4+ ions are contained in the fragments of the planes (13ī)-R; (203)-R; (212)-O; (003)-O belonging to the different-scale clusters.
Зависимость светоэкситонного взаимодействия от ширины квантовой ямы во внешнем однородном электрическом поле
Authors: Логинов Д.К. , Донец А.В.
Published: January 2021

The paper is devoted to analyse of the dependance of exciton-light coupling on a quantum well thickness at presence of an uniform electric field. It is shown that the increasing of quantum well thickness at an enough strong field results in decreasing of the exciton-light coupling in compare with narrower wells.The numerical calculations of longitudinal-transverse splitting are performed for a wide ranges of both electric field and values of quantum well thickness.The analyse of obtained data allows to get analytical expressions which desсribe the exciton-light coupling dependence like on the electric field as quantum well thickness.
Теплоемкость и термодинамические функции GdGaTi-=SUB=-2-=/SUB=-O-=SUB=-7-=/SUB=- в области 320-1000 K
Authors: Денисова Л.Т. , Молокеев М.С. , Чумилина Л.Г. , Рябов В.В. , Денисов В.М.
Published: January 2021

Твердофазным синтезом из исходных оксидов Gd2O3, Ga2O3 и TiO2 обжигом на воздухе при температурах 1273 и 1573 K получен титанат GdGaTi2O7. Методом рентгеновской дифракции уточнена его кристаллическая структура. Высокотемпературная теплоемкость (320-1000 K) этого соединения измерена методом дифференциальной сканирующей калориметрии. На основании экспериментальной зависимости C_p=f(T) рассчитаны его основные термодинамические функции. Ключевые слова: титанаты редкоземельных элементов, твердофазный синтез, высокотемпературная теплоемкость, термодинамические функции.
Определение зонной диаграммы гетероперехода InAs-=SUB=-1-y-=/SUB=-Sb-=SUB=-y-=/SUB=-/InAsSbP в интервале составов y<0.2
Authors: Моисеев К.Д. , Романов В.В.
Published: January 2021

Гетероструктуры n+-InAs/n0-InAs1-ySby/p-InAsSbP с асимметричными отсечками зон на гетерограницах активной области были выращены методом газофазной эпитаксии из металлоорганических соединений на подложках InAs. В прямой ветви вольтамперных характеристик полученных гетероструктур при низких температурах наблюдались участки с туннельной проводимостью. Проведен расчет зонной энергетической диаграммы двойной гетероструктуры InAs/InAs1-ySby/InAsSbP в диапазоне составов (y<0.2) узкозонной активной области. Было показано, что гетеропереход InAs1-ySby/InAsSbP является гетеропереходом II типа в данном диапазоне составов. Наблюдаемая в эксперименте электролюминесценция для гетероструктур n+-InAs/n0-InAs1-ySby/ p-InAsSbP с активной областью в интервале составов y>0.14 была обусловлена интерфейсными излучательными переходами с участием локализованных дырочных состояний на гетерогранице II типа. Ключевые слова: гетеропереходы, МОГФЭ, электролюминесценция, антимониды, InAs.
Магнитооптические свойства и фотолюминесценция микропроводов (PrDy)(FeCo)B
Authors: Королев Д.В. , Дворецкая Е.В. , Коплак О.В. , Валеев Р.А. , Пискорский В.П. , Моргунов Р.Б.
Published: January 2021

Микропровода (PrDy)(FeCo)B, не содержащие железных включений и ядра, получены экстрагированием из капли расплава (PrDy)(FeCo)B при пониженной скорости охлаждения. В объеме микропроводов идентифицированы включения кристаллических фаз (PrDy)2(CoFe)14B, магнитной фазы Лавеса Dy(FeCo)2 и люминесцирующих под действием ультрафиолетового излучения (УФ) включения фаз Pr2O3 и Dy2O3. Получены распределения поперечной и продольной составляющих намагниченности вдоль микропровода, которое регистрировалось для различных направлений внешнего магнитного поля с помощью магнитооптической индикаторной пленки и магнитооптического эффекта Керра. В микропроводах шириной менее 70 μm продольное внешнее поле вызывает модуляцию поперечной намагниченности, соответствующую образованию цилиндрических доменов. Сосуществование продольной и радиальной намагниченностей было обнаружено по изменению угла падения и длины волны микроскопа Керра. В более широких микропроводах шириной ~150 μm поверхностных радиальных доменов не обнаружено. Обнаружена стимулированная ультрафиолетом фотолюминесценция включений оксидов Pr2O3 и Dy2O3, имеющихся, как на поверхности, так и в объеме микропровода. Ключевые слова: микропровода, редкоземельные магниты, доменная структура, эффект Керра, фотолюминесценция.
О полях напряжений в гетерогенных средах, определяемых методом акустической эмиссии
Authors: Гиляров В.Л. , Дамаскинская Е.Е.
Published: January 2021

Local internal stress estimation method based on the S.N. Zhurkov kinetic concept of solids fracture is introduced. The stress field is computed from the time series of acoustic emission intervals between the successive signals. For the case of two structurally quite different materials the time evolution of this stress is examined.
Мартенситное превращение, магнитотранспортные свойства и магнитокалорический эффект в сплавах Ni-=SUB=-47-x-=/SUB=-Mn-=SUB=-42+x-=/SUB=-In-=SUB=-11-=/SUB=- (0≤ x≤2)
Authors: Калетина Ю.В. , Герасимов Е.Г. , Терентьев П.Б. , Калетин А.Ю.
Published: January 2021

Исследованы и обсуждаются структура, электрические и магнитные свойства в сплавах Ni47-xMn42+xIn11 (0≤ x≤2) при изменении соотношения Ni/Mn. Показано, что изменение типа кристаллической решетки в ходе мартенситного превращения сопровождается существенным изменением электросопротивления на 45-50%. Во всех исследованных сплавах наблюдается отрицательное магнитосопротивление и инверсный магнитокалорический эффект. Максимальная величина магнитосопротивления в магнитном поле 18 kOe обнаружена в сплаве Ni46Mn43In11. Максимальное значение магнитокалорического эффекта наблюдали в сплаве Ni47Mn42In11 при T=325 K. Ключевые слова: мартенситное превращение, ферромагнитные сплавы, структура, электросопротивление, магнитосопротивление.