scholarly journals Bibliometric study of the combustion of cane cutting waste (RAC) in the capture of Carbon Dioxide.

2021 ◽  
Author(s):  
SANDRA EMPERATRIZ PEÑA ◽  
CARMEN FORERO ◽  
FRANCISCO VELASCO
Keyword(s):  
Carbon Dioxide ◽  
Observational Study ◽  
Impact Factor ◽  
Combustion Process ◽  
Research Area ◽  
Scientific Production ◽  
Autonomous Community ◽  
Vos Viewer ◽  
Research Areas ◽  
The Impact

Abstract Objective: To describe the combustion process of sugarcane RAC with CO2 capture by manganese-based oxygen transporters during the period 2015-2021. Design: Bibliometric observational study. Location: Combustion of cutting waste with CO2 capture by manganese-based oxygen conveyors.Main measures: Magazine, year of publication, first/last author, workplace and autonomous community were obtained in each register. Subsequently, the articles were classified according to their content or research area. The impact factor was obtained from the bibliometric analysis base of Scopus and Vos viewer.Results: Through the search criteria used, 475 documents were recovered in the 2015-2021 semester, excluding 2637 because they did not correspond to affiliation to centers or institutions directly related to documents related to chemical combustion and CO2 capture. In total, 73 documents were selected, in which an increase and interest in the study of these processes was verified both in the research areas and in the journals in which they are published. Most of the studies have been published in universities or research centers and differences were observed in terms of the volume of international and national scientific production, so it is necessary to increase these investigations in the country of Colombia.

scholarly journals Bibliometric study of the combustion of cane cutting waste (RAC) in the capture of Carbon Dioxide.

2021 ◽  
Author(s):  
SANDRA EMPERATRIZ PEÑA ◽  
CARMEN FORERO ◽  
FRANCISCO VELASCO
Keyword(s):  
Carbon Dioxide ◽  
Observational Study ◽  
Impact Factor ◽  
Bibliometric Analysis ◽  
Combustion Process ◽  
Research Area ◽  
Scientific Production ◽  
Autonomous Community ◽  
Research Areas ◽  
The Impact

Abstract Objective: To describe the combustion process of sugarcane RAC with CO2 capture by manganese-based oxygen transporters during the period from 2015 to 2021. Design: Bibliometric observational study. Location: Combustion of cutting waste with CO2 capture by manganese-based oxygen conveyors.Main measures: Magazine, year of publication, first/last author, workplace and autonomous community were obtained in each register. Subsequently, the articles were classified according to their content or research area. The impact factor was obtained from the bibliometric analysis base of Scopus and Vos viewer.Results: Using the search criteria, 475 documents were recovered in the 2015-2021 period, excluding 2637 because they did not correspond to affiliation with centers or institutions directly related to documents related to chemical combustion and CO2 capture. In total, 73 documents were selected, in which an increase and interest in the study of these processes was verified both in the research areas and in the journals in which they are published. Most of the studies have been published in universities or research centers, and differences were observed in terms of the volume of international and national scientific production, so it is necessary to increase these investigations in Colombia.

scholarly journals Profile of Brazilian scientific production on A/H1N1 pandemic influenza

2012 ◽  
Vol 17 (6) ◽  
pp. 1629-1634 ◽  
Author(s):  
Adriana Luchs
Keyword(s):  
Impact Factor ◽  
H1n1 Influenza ◽  
Scientific Production ◽  
Similar Amount ◽  
H1n1 Pandemic ◽  
Public Funds ◽  
The Impact ◽  
Journal Impact ◽  
Bibliometric Studies ◽  
Made In

In the last few years, bibliometric studies have proliferated, seeking to provide data on world research. This study analyzes the profile of the Brazilian scientific production in the A (H1N1) influenza field between 2009 and 2011. The research was conducted in MEDLINE, SciELO and LILACS databases, selecting papers in which the term "H1N1" and "Brazil" were defined as the main topics. The data were analyzed taking into consideration the Brazilian state and institution in which the articles were produced, the impact factor of the journal and the language. The research revealed 40 documents (27 from MEDLINE, 16 from SciELO and 24 from LILACS). The journal impact factor ranged from 0.0977 to 8.1230. A similar amount of articles were written in English and Portuguese and São Paulo was the most productive state in the country, with 95% of the Brazilian production originating from the Southern and Southeastern regions. Linguistic data indicate that previous efforts made in order to improve the scientific production of Brazilian researchers making their observations attain a broader scientific audience produced results. It is necessary to assess the scientific studies, especially those conducted with public funds, in order to ensure that the results will benefit society.

scholarly journals Study on effect CO2 diluent on fuel cоmbustion in methane-oxygen combustion chambers

Vestnik IGEU ◽  
2021 ◽  
pp. 14-22
Author(s):  
I.I. Komarov ◽  
D.M. Kharlamova ◽  
A.N. Vegera ◽  
V.Y. Naumov
Keyword(s):  
Carbon Dioxide ◽  
Combustion Chamber ◽  
Combustion Process ◽  
Methane Combustion ◽  
Flame Stabilization ◽  
Total Carbon ◽  
Working Fluid ◽  
Combustion Mechanism ◽  
Combustion Chambers ◽  
The Impact

Studying closed gas turbine cycles on supercritical carbon dioxide is currently a promising issue in the development of power energy sector in terms of increasing energy efficiency and minimizing greenhouse gas emissions into the atmosphere. Combustion of methane with oxygen in the combustion chamber occurs not in the nitrogen environment, but in the environment of carbon dioxide, that is the working fluid of the cycle, which is an inhibitor of chemical reactions. A large mass content of such a diluent of the reaction mixture in the volume of the chamber leads to the risks of significant chemical underburning, efficiency decrease of the combustion chamber and the cycle as a whole. The aim of the research is to study the kinetic parameters of the combustion of methane with oxygen in a supercritical CO2 diluent medium to ensure reliable and stable combustion of fuel by assessing the degree of the inhibitory effect of CO2 and determining its permissible amount in the active combustion zone of the combustion chamber. The research method is a numerical simulation of turbulent-kinetic processes of methane combustion in the combustion chamber using the reduced methane combustion mechanism. Ansys Fluent software package has been used. The authers have studied the impact of CO2 diluent on fuel cоmbustion in methane-oxygen combustion chambers. It is found that the combustor flame stabilization takes place if the content of СО2 diluent supplied to the mixture with oxidizer is 0,46–0,5 of mass fraction; additional СО2 diluent forms local low temperature zones which slow down the combustion process. When this happens, adding cooling СО2 into the flame stabilization zone should be eliminated. The study has found that no more than 20 % of the total carbon dioxide content should be supplied to the combustion chamber; to stabilize the flame and reduce its length, it is necessary to install blades to swirl the fuel and oxidizer mixed with CO2 at the inlet of the combustion chamber; CO2 supply for cooling should be carried out not less than 130 mm away from the burner mouth.

scholarly journals HOW TO EVALUATE SCIENTIFIC PRODUCTION

2015 ◽  
Vol 42 (suppl 1) ◽  
pp. 17-19
Author(s):  
Alberto Azoubel Antunes
Keyword(s):  
Impact Factor ◽  
Critical Analysis ◽  
Scientific Production ◽  
Index Method ◽  
H Index ◽  
Scientific Papers ◽  
Evaluation Of Teaching ◽  
Number Of Citations ◽  
The Impact ◽  
Over Time

Objective: To conduct a critical analysis of the two main bibliometric indexes used by science: the impact factor and the H index. Method: Research was conducted on PubMed using the keywords: impact factor, Bibliometrics and H index. Results: The citations of articles tend to follow a curve in which the articles published in a given year increase sharply to a peak occurring between two and six years after its publication. From this peak citations decline over time. Conclusion: The analysis of the scientific merit should not be based on only in bibliometric measure, but in the association of various parameters. The impact factor and the H index is mainly based on the number of citations of scientific papers, and this parameter, although important, should not be used alone, nor overvalued in the evaluation of teaching merit.

scholarly journals Nova fórmula revisada para o cálculo do fator de impacto web (FIW) │ New revised formula for calculating Web Impact Factor

2013 ◽  
Vol 9 (1) ◽  
Author(s):  
Nadia Vanti
Keyword(s):  
Impact Factor ◽  
Scientific Production ◽  
Natural Logarithm ◽  
Webometric Indicators ◽  
De Se ◽  
History Of ◽  
New Formula ◽  
The Impact ◽  
Original Formula ◽  
The Web

Resumo Apresenta um histórico da medição do impacto da produção científica e mostra a necessidade de estender tal avaliação à web.  Descreve como vem sendo calculado o fator de impacto em sítios web e propõe uma mudança na fórmula original, com a inclusão de um logaritmo natural ao seu denominador, a fim de se obter resultados mais acurados.  A nova fórmula é aplicada aos sítios web das universidades federais da região sudeste do Brasil, obtendo-se resultados mais acurados.Palavras-chave Impacto da produção científica, Indicadores webométricos, Fator de Impacto Web, Fórmula do FIW, Logaritmo natural. Abtsract Displays a history of measuring the impact of scientific articles and shows the need to extend this assessment to the web. Describes how the impact factor on websites has been calculated and proposes a change in the original formula, with the inclusion of a natural logarithm in its denominator in order to obtain more accurate results. The new formula is applied to websites of federal universities in Southeastern Brazil.Keywords Impact of scientific production, Webometric indicators, Web Impact Factor Formula FIW, Natural logarithm.

scholarly journals Impact of Entrepreneurial Self-Efficacy and Entrepreneurial Motivation on Micro and Small Business Success for Food and Beverage Sector in East Java, Indonesia

Economies ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 10
Author(s):  
Veronika Agustini Srimulyani ◽  
Yustinus Budi Hermanto
Keyword(s):  
Self Efficacy ◽  
Small Businesses ◽  
Research Area ◽  
Work Behavior ◽  
Business Success ◽  
Innovative Work Behavior ◽  
Entrepreneurial Motivation ◽  
Research Areas ◽  
Food And Beverage ◽  
The Impact

The research aims to examine the impact of entrepreneurial self-efficacy and entrepreneurial motivation on the success of the food and beverage (F&B) sector’s micro and small enterprises (MSEs). The sample was selected using purposive sampling techniques from 267 MSE owners in the F&B businesses in Madiun City, Madiun Regency, and Magetan Regency, East Java, Indonesia. The test results of the hypothesis showed that: (1) partially, self-efficacy entrepreneurship and entrepreneurial motivation are significantly positive on business success in micro and small F&B businesses in East Java, Indonesia; (2) entrepreneurial motivation acts as a partial mediation of the influence of self-efficacy entrepreneurship on the business success of micro and small businesses in the field of food and beverage in East Java, Indonesia; abd (3) simultaneously, self-efficacy entrepreneurship and the influence of entrepreneurial motivation are significantly positive on business success in micro and small businesses in the food and beverage fields of East Java, Indonesia. The results showed that self-efficacy and motivation in entrepreneurship are necessary because they affect business success, particularly in micro and small F&B businesses in Indonesia. Further research can explore other factors that influence business success by expanding the research area and other types of creative industry businesses. Further research could explore other factors influencing business success by expanding research areas, such as entrepreneurial leadership and innovative work behavior.

Piezoelectric β-polymorph formation of new textiles by surface modification with coating process based on interfacial interaction on the conformational variation of poly (vinylidene fluoride) (PVDF) chains

2020 ◽  
Vol 91 (3) ◽  
pp. 31301
Author(s):  
Nabil Chakhchaoui ◽  
Rida Farhan ◽  
Meriem Boutaldat ◽  
Marwane Rouway ◽  
Adil Eddiai ◽  
...  
Keyword(s):  
High Efficiency ◽  
Vinylidene Fluoride ◽  
Research Work ◽  
Research Area ◽  
Interfacial Interaction ◽  
Tetraethyl Orthosilicate ◽  
Poly Vinylidene Fluoride ◽  
Carbon Nanofillers ◽  
The Impact ◽  
Advanced Applications

Novel textiles have received a lot of attention from researchers in the last decade due to some of their unique features. The introduction of intelligent materials into textile structures offers an opportunity to develop multifunctional textiles, such as sensing, reacting, conducting electricity and performing energy conversion operations. In this research work nanocomposite-based highly piezoelectric and electroactive β-phase new textile has been developed using the pad-dry-cure method. The deposition of poly (vinylidene fluoride) (PVDF) − carbon nanofillers (CNF) − tetraethyl orthosilicate (TEOS), Si(OCH2CH3)4 was acquired on a treated textile substrate using coating technique followed by evaporation to transform the passive (non-functional) textile into a dynamic textile with an enhanced piezoelectric β-phase. The aim of the study is the investigation of the impact the coating of textile via piezoelectric nanocomposites based PVDF-CNF (by optimizing piezoelectric crystalline phase). The chemical composition of CT/PVDF-CNC-TEOS textile was detected by qualitative elemental analysis (SEM/EDX). The added of 0.5% of CNF during the process provides material textiles with a piezoelectric β-phase of up to 50% has been measured by FTIR experiments. These results indicated that CNF has high efficiency in transforming the phase α introduced in the unloaded PVDF, to the β-phase in the case of nanocomposites. Consequently, this fabricated new textile exhibits glorious piezoelectric β-phase even with relatively low coating content of PVDF-CNF-TEOS. The study demonstrates that the pad-dry-cure method can potentially be used for the development of piezoelectric nanocomposite-coated wearable new textiles for sensors and energy harvesting applications. We believe that our study may inspire the research area for future advanced applications.

Overview and initial results of the National Center for Health Statistics’ Research and Development Survey1

2020 ◽  
Vol 36 (4) ◽  
pp. 1199-1211
Author(s):  
Jennifer Parker ◽  
Kristen Miller ◽  
Yulei He ◽  
Paul Scanlon ◽  
Bill Cai ◽  
...  
Keyword(s):  
Survey Data ◽  
Evaluation Studies ◽  
Research Area ◽  
Production Cycle ◽  
Response Patterns ◽  
Health Statistics ◽  
Mode Effects ◽  
Research Areas ◽  
Statistical Agencies ◽  
Initial Results

The National Center for Health Statistics is assessing the usefulness of recruited web panels in multiple research areas. One research area examines the use of close-ended probe questions and split-panel experiments for evaluating question-response patterns. Another research area is the development of statistical methodology to leverage the strength of national survey data to evaluate, and possibly improve, health estimates from recruited panels. Recruited web panels, with their lower cost and faster production cycle, in combination with established population health surveys, may be useful for some purposes for statistical agencies. Our initial results indicate that web survey data from a recruited panel can be used for question evaluation studies without affecting other survey content. However, the success of these data to provide estimates that align with those from large national surveys will depend on many factors, including further understanding of design features of the recruited panel (e.g. coverage and mode effects), the statistical methods and covariates used to obtain the original and adjusted weights, and the health outcomes of interest.

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