Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 4.899
Filtrar
1.
Sci Total Environ ; 856(Pt 1): 159079, 2023 Jan 15.
Artigo em Inglês | MEDLINE | ID: mdl-36179824

RESUMO

An investigation was carried out to study the degradation of anionic polyacrylamide (A-PAM) under different temperature and microorganism conditions as well as to assess its effects on water chemistry and toxicity in oil sands tailings. The maximum removal efficiency of A-PAM was 41.0 % in tailings water with augmented microorganisms at 20 °C. No acrylamide (AMD) monomer was released during the A-PAM degradation, while residual AMD, from the manufacturing process to make A-PAM, was completely removed within 4 weeks. Both temperature and microorganisms showed significant effects (p < 0.05) on the degradation of A-PAM and residual AMD. Gel permeation chromatography (GPC) and Fourier transform infrared (FT-IR) analyses showed that biodegradation could be the active pathway for A-PAM degradation in oil sands tailings. These analyses also indicated that macromolecular A-PAM was degraded into lower molecular weight organic compounds. No remarkable changes of the total concentration of naphthenic acids (NAs) were observed in A-PAM treated tailings water. However, low concentrations of fatty acids (<2.5 mg/L), which fit the NAs formula, were detected in pure polymer solution, indicating that A-PAM degradation would not affect the total concentration of NAs in tailings water but affect their distribution. Our results also showed that total organic carbon (TOC) and chemical oxygen demand (COD) could be used as indicators of A-PAM degradation in tailings water due to their strong linear correlations (R2 > 0.90). Only slight increases in zeta potential and pH were found during A-PAM degradation. Limited effect on acute toxicity and no genotoxicity were found in A-PAM treated tailings water. Furthermore, the results suggest that A-PAM undergoes hydrolysis of amide groups by amidase enzymes, releasing ammonia and smaller molecules like organic acids. This research provides valuable information regarding the stability and impacts of A-PAM and thus will be beneficial for the management of oil sands tailings in long period of time.


Assuntos
Campos de Petróleo e Gás , Poluentes Químicos da Água , Poluentes Químicos da Água/análise , Espectroscopia de Infravermelho com Transformada de Fourier , Fator de Impacto de Revistas , Ácidos Carboxílicos/análise , Biodegradação Ambiental , Água/análise
2.
J Extra Corpor Technol ; 54(1): 19-28, 2022 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-36380822

RESUMO

Extracorporeal Membrane Oxygenation (ECMO) was first used in the 1970s. Its use is increasingly common in critical care and perioperative settings and has gained newfound prominence during COVID-19. To guide future research, we conducted a bibliometric analysis of ECMO literature. Thomson Reuters Web of Science was searched to March 7, 2021. Articles were ranked by total number of citations. Data was extracted from the 100 most cited papers relevant to ECMO for study design, topic, author, year, and institution. Journal impact factor for 2019 and Eigenfactor scores were also recorded. Our search retrieved a total of 18,802 articles. Median number of citations for the top 100 articles was 220 (range 157-1,819). These were published in 34 journals, with first authors originating from 15 countries. The Annals of Thoracic Surgery had the highest number of articles (n = 9) while Lancet publications had the most citations (n = 3,191). Use of ECMO was most commonly observed in cardiogenic shock or acute respiratory distress syndrome. United States had the greatest article output (n = 49). With 10 publications, 2013 was the most prolific year. Using linear regression, when controlled for time since publication, there was no statistically significant relationship between 2019 journal impact factor and number of article citations (p = .09). Top articles in the ECMO literature are of considerable impact and quality. As the United States produced the bulk of the prominent evidence base, and most data were regarding respiratory issues, outsized advances in ECMO may be possible within the United States during the COVID-19 era.


Assuntos
COVID-19 , Oxigenação por Membrana Extracorpórea , Síndrome do Desconforto Respiratório , Humanos , COVID-19/epidemiologia , COVID-19/terapia , Bibliometria , Fator de Impacto de Revistas
4.
Medicine (Baltimore) ; 101(44): e31144, 2022 Nov 04.
Artigo em Inglês | MEDLINE | ID: mdl-36343026

RESUMO

BACKGROUND: Hidradenitis suppurativa (HS) is a chronic, inflammatory and debilitating dermatosis characterized by painful nodules, sinus tracts and abscesses in apocrine gland-bearing areas that predominantly affect women worldwide. New therapeutic interventions based on the clinical manifestations of patients have recently been introduced in numerous articles. However, which countries, journals, subject categories, and articles have the ultimate influence remain unknown. This study aimed to display influential entities in 100 top-cited HS-related articles (T100HS) and investigate whether medical subject headings (i.e., MeSH terms) can be used to predict article citations. METHODS: T100HS data were extracted from PubMed since 2013. Subject categories were classified by MeSH terms using social network analysis. Sankey diagrams were applied to highlight the top 10 influential entities in T100HS from the three aspects of publication, citations, and the composited score using the hT index. The difference in article citations across subject categories and the predictive power of MeSH terms on article citations in T100HS were examined using one-way analysis of variance and regression analysis. RESULTS: The top three countries (the US, Italy, and Spain) accounts for 54% of the T100HS. The T100HS impact factor (IF) is 12.49 (IF = citations/100). Most articles were published in J Am Acad Dermatol (15%; IF = 18.07). Eight subject categories were used. The "methods" was the most frequent MeSH term, followed by "surgery" and "therapeutic use". Saunte et al, from Roskilde Hospital, Denmark, had 149 citations in PubMed for the most cited articles. Sankey diagrams were used to depict the network characteristics of the T100HS. Article citations did not differ by subject category (F(7, 92) = 1.97, P = .067). MeSH terms were evident in the number of article citations predicted (F(1, 98) = 129.1106; P < .001). CONCLUSION: We achieved a breakthrough by displaying the characteristics of the T100HS network on the Sankey diagrams. MeSH terms may be used to classify articles into subject categories and predict T100HS citations. Future studies can apply the Sankey diagram to the bibliometrics of the 100 most-cited articles.


Assuntos
Hidradenite Supurativa , Fator de Impacto de Revistas , Humanos , Feminino , Hidradenite Supurativa/terapia , Bibliometria , Medical Subject Headings , PubMed
7.
J Obstet Gynaecol Can ; 44(11): 1121-1122, 2022 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-36410931
8.
Bioessays ; 44(12): e2270030, 2022 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-36424099
9.
J Korean Med Sci ; 37(40): e296, 2022 Oct 17.
Artigo em Inglês | MEDLINE | ID: mdl-36254532

RESUMO

BACKGROUND: The coronavirus disease 2019 (COVID-19) pandemic has resulted in enormous related publications. However, the citation frequency of these documents and their influence on the journal impact factor (JIF) are not well examined. We aimed to evaluate the impact of COVID-19 on biomedical research publications and their citation frequency. METHODS: We searched publications on biomedical research in the Web of Science using the search terms "COVID-19," "SARS-Cov-2," "2019 corona*," "corona virus disease 2019," "coronavirus disease 2019," "novel coronavirus infection" and "2019-ncov." The top 200 journals were defined as those with a higher number of COVID-19 publications than other journals in 2020. The COVID-19 impact ratio was calculated as the ratio of the average number of citations per item in 2021 to the JIF for 2020. RESULTS: The average number of citations for the top 200 journals in 2021, per item published in 2020, was 25.7 (range, 0-270). The average COVID-19 impact ratio was 3.84 (range, 0.26-16.58) for 197 journals that recorded the JIF for 2020. The average JIF ratio for the top 197 journals including the JIFs for 2020 and 2021 was 1.77 (range, 0.68-8.89). The COVID-19 impact ratio significantly correlated with the JIF ratio (r = 0.403, P = 0.010). Twenty-five Korean journals with a COVID-19 impact ratio > 1.5 demonstrated a higher JIF ratio (1.31 ± 0.39 vs. 1.01 ± 0.18, P < 0.001) than 33 Korean journals with a lower COVID-19 impact ratio. CONCLUSION: COVID-19 pandemic infection has significantly impacted the trends in biomedical research and the citation of related publications.


Assuntos
COVID-19 , Pandemias , COVID-19/epidemiologia , Humanos , Fator de Impacto de Revistas , Publicações , SARS-CoV-2
10.
PLoS One ; 17(10): e0274738, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36264974

RESUMO

The laboratory mouse is a key player in preclinical oncology research. However, emphasis of techniques reporting at the expense of critical animal-related detail compromises research integrity, animal welfare, and, ultimately, the translation potential of mouse-based oncology models. To evaluate current reporting practices, we performed a cross-sectional survey of 400 preclinical oncology studies using mouse solid-tumour models. Articles published in 2020 were selected from 20 journals that specifically endorsed the ARRIVE (Animal Research: Reporting of In Vivo Experiments) preclinical reporting guidelines. We assessed reporting compliance for 22 items in five domains: ethical oversight assurance, animal signalment, husbandry, welfare, and euthanasia. Data were analysed using hierarchical generalised random-intercept models, clustered on journal. Overall, reporting of animal-related items was poor. Median compliance over all categories was 23%. There was little or no association between extent of reporting compliance and journal or journal impact factor. Age, sex, and source were reported most frequently, but verifiable strain information was reported for <10% of studies. Animal husbandry, housing environment, and welfare items were reported by <5% of studies. Fewer than one in four studies reported analgesia use, humane endpoints, or an identifiable method of euthanasia. Of concern was the poor documentation of ethical oversight information. Fewer than one in four provided verifiable approval information, and almost one in ten reported no information, or information that was demonstrably false. Mice are the "invisible actors" in preclinical oncology research. In spite of widespread endorsement of reporting guidelines, adherence to reporting guidelines on the part of authors is poor and journals fail to enforce guideline reporting standards. In particular, the inadequate reporting of key animal-related items severely restricts the utility and translation potential of mouse models, and results in research waste. Both investigators and journals have the ethical responsibility to ensure animals are not wasted in uninformative research.


Assuntos
Experimentação Animal , Fator de Impacto de Revistas , Animais , Camundongos , Estudos Transversais , Publicações , Projetos de Pesquisa , Modelos Animais de Doenças
11.
World J Gastroenterol ; 28(38): 5648-5657, 2022 Oct 14.
Artigo em Inglês | MEDLINE | ID: mdl-36304089

RESUMO

BACKGROUND: Accurate assessment of the quality of academic journals is of great significance. While Journal Impact Factor (JIF), calculated by Clarivate and based upon the Web of Science literature database, and CiteScore (CS), developed by Elseiver and based upon the Scopus database, have enjoyed high uptake worldwide, efforts continue towards creation of other scientometric indexes that will provide ever-greater qualitative insights into journal impact. Such efforts have yielded the newly-launched Journal Article Influence Index (JAII), which is based on the Reference Citation Analysis (RCA) database, an open multidisciplinary citation analysis database based on artificial intelligence technology. AIM: To evaluate and summarize the similarities and differences between JAII and JIF/CS as journal evaluation indicators, and provide an intuitive method for visual representation of the related data. METHODS: We searched the Journal Citation Reports to obtain the 2021 JIF list, downloaded the CS list updated in July on the Scopus website, and collected the comprehensive list of 2022 JAIIs from the RCA database (www.referencecitationanalysis.com). RESULTS: Our research results revealed that by breaking through the time limit of mainstream journal evaluation methods, the JAII is able to perform well in data reliability, establishing its benefit as a complementary scientometric index to JIF and CS. CONCLUSION: JAII provides comprehensive assessment of the quality and performance of journals.


Assuntos
Gastroenterologia , Publicações Periódicas como Assunto , Humanos , Inteligência Artificial , Reprodutibilidade dos Testes , Fator de Impacto de Revistas
13.
JAMA Netw Open ; 5(10): e2234585, 2022 10 03.
Artigo em Inglês | MEDLINE | ID: mdl-36194415

RESUMO

This cross-sectional study compares the author and journal characteristics of retracted articles on COVID-19 with retracted articles from other topics.


Assuntos
COVID-19 , Má Conduta Científica , Humanos , Fator de Impacto de Revistas
14.
Medicine (Baltimore) ; 101(40): e30674, 2022 Oct 07.
Artigo em Inglês | MEDLINE | ID: mdl-36221404

RESUMO

BACKGROUND: A neuromuscular junction (NMJ) (or myoneural junction) is a chemical synapse between a motor neuron (MN) and a muscle fiber. Although numerous articles have been published, no such analyses on trend or prediction of citations in NMJ were characterized using the temporal bar graph (TBG). This study is to identify the most dominant entities in the 100 top-cited articles in NMJ (T100MNJ for short) since 2001; to verify the improved TBG that is viable for trend analysis; and to investigate whether medical subject headings (MeSH terms) can be used to predict article citations. METHODS: We downloaded T100MNJ from the PubMed database by searching the string ("NMJ" [MeSH Major Topic] AND ("2001" [Date - Modification]: "2021" [Date - Modification])) and matching citations to each article. Cluster analysis of citations was performed to select the most cited entities (e.g., authors, research institutes, affiliated countries, journals, and MeSH terms) in T100MNJ using social network analysis. The trend analysis was displayed using TBG with two major features of burst spot and trend development. Next, we examined the MeSH prediction effect on article citations using its correlation coefficients (CC) when the mean citations in MeSH terms were collected in 100 top-cited articles related to NMJ (T100NMJs). RESULTS: The most dominant entities (i.e., country, journal, MesH term, and article in T100NMJ) in citations were the US (with impact factor [IF] = 142.2 = 10237/72), neuron (with IF = 151.3 = 3630/24), metabolism (with IF = 133.02), and article authored by Wagh et al from Germany in 2006 (with 342 citing articles). The improved TBG was demonstrated to highlight the citation evolution using burst spots, trend development, and line-chart plots. MeSH terms were evident in the prediction power on the number of article citations (CC = 0.40, t = 4.34). CONCLUSION: Two major breakthroughs were made by developing the improved TBG applied to bibliographical studies and the prediction of article citations using the impact factor of MeSH terms in T100NMJ. These visualizations of improved TBG and scatter plots in trend, and prediction analyses are recommended for future academic pursuits and applications in other disciplines.


Assuntos
Bibliometria , Fator de Impacto de Revistas , Humanos , Medical Subject Headings , Junção Neuromuscular , Publicações
15.
Medicine (Baltimore) ; 101(39): e30850, 2022 Sep 30.
Artigo em Inglês | MEDLINE | ID: mdl-36181008

RESUMO

Whiplash injury is a common diagnosis and causes substantial economic burden. Numerous papers have been published to provide new insights into whiplash injury. However, so far there has not been a comprehensive analysis of the most influential publications on whiplash injury. This study aimed to determine the 100 most cited publications on whiplash injury and analyze their characteristics. A keyword search was conducted using the Web of Science database. The top 100 cited publications relevant to whiplash injury were gathered. The main characteristics including title, year of publication, citation, authorship, journal, country, institution, and topic were generated. The number of citations of the top 100 cited publications ranged from 82 to 777. Fifteen countries contributed the top 100 publications. Australia had the largest number of publications (26), followed by the United States (21), and Canada (12). The majority of the publications were from Europe (40) and North America (33). A total of 19 institutions and 17 authors published more than one publication. The University of Queensland (16) and the author Sterling M (7) had the leading publication record. This is the first citation analysis to identify and characterize the highest impact researches on whiplash injury. The present analysis provides the most influential studies on whiplash injury, and reveals the leading journals, counties, institutions, and authors with special contributions in this filed. The list may serve as an archive of historical development of whiplash injury and a basis for further research.


Assuntos
Fator de Impacto de Revistas , Traumatismos em Chicotada , Autoria , Bibliometria , Europa (Continente) , Humanos , Publicações , Estados Unidos
18.
Tunis Med ; 100(6): 416-422, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36206059

RESUMO

The SCImago platform had just announced, at the beginning of 2022, the new position of the journal «La Tunisie Médicale¼ (ISSN: 0041-4131; IeSSN: 2724-7031) in the third quartile (Q3) of journals in the field. Medicine/General Medicine, with an SJR index (2021) of 0.29 and an Impact Score (2 years) of 0.53. As for the Scopus® platform, it reported for the journal «La Tunisie Médicale¼, a CiteScore 2021 of 0.8 (between 2018-2021: 514 citations and 630 documents) and a position at the 34th percentile. To improve its notoriety indices, the new editorial team of the journal "La Tunisie Médicale" will immediately: 1. Select research manuscripts with a high level of evidence; 2. Invite leaders in scientific biomedical writing to actively participate in its special thematic issues; 3. Mobilize an international team of competent, available and committed reviewers.


Assuntos
Fator de Impacto de Revistas , Publicações Periódicas como Assunto , Humanos
19.
Am J Sports Med ; 50(13): 3690-3697, 2022 11.
Artigo em Inglês | MEDLINE | ID: mdl-36259650

RESUMO

BACKGROUND: To better understand the research impact on social media, alternative web-based metrics (Altmetrics) were developed. Open access (OA) publishing, which allows for widespread distribution of scientific content, has become increasingly common in the medical literature. However, the relationship between OA publishing and social media impact remains unclear. PURPOSE: To compare social media attention and citation rates between OA and subscription access (SA) research articles within the orthopaedic and sports medicine literature. STUDY DESIGN: Cross-sectional study. METHODS: Articles published as either OA or SA in 5 high-impact hybrid orthopaedic journals between January 2019 and December 2019 were analyzed. The primary outcome was the Altmetric Attention Score (AAS), a validated measure of social media attention. Secondary outcomes included citation rates, article characteristics, and the number of shares on social media. Independent t tests and chi-square analyses were used to compare outcomes between OA and SA articles. A multivariable linear regression analysis was performed to determine the association between article type and AAS while controlling for bibliometric characteristics. RESULTS: A total of 2143 articles (246 OA articles, 11.5%; 1897 SA articles, 88.5%) were included. The mean AAS among all OA articles was 62.4 ± 184.6 (range, 0-2032), whereas the mean AAS among all SA articles was 18.4 ± 109.8 (range, 0-3425), representing a statistically significant difference (P < .001). The mean citation rate among OA articles was significantly higher (17.0 ± 22.5; range, 0-139) than that of SA articles (8.6 ± 13.4; range, 0-169) (P < .001). Multivariable linear regression analysis demonstrated that OA status (ß = 15.15; P = .044), number of institutions (ß = 2.13; P = .023), studies classified as epidemiological investigations (ß = 107.40; P < .001), and disclosure of a conflict of interest (ß = -11.18; P = .032) were significantly associated with a higher AAS. CONCLUSION: OA articles resulted in significantly greater AAS and citations in comparison with SA articles. Articles published through the OA option in hybrid journals as well as those with a higher number of institutions, those that disclosed a conflict of interest, and those classified as epidemiological investigations were positively associated with greater AAS in addition to a greater number of citations. The potential for more extensive research dissemination inherent in the OA option may therefore translate into greater reach and social media attention.


Assuntos
Fator de Impacto de Revistas , Mídias Sociais , Humanos , Acesso à Informação , Estudos Transversais , Bibliometria
20.
J Urol ; 208(5): 1168-1169, 2022 11.
Artigo em Inglês | MEDLINE | ID: mdl-36205337
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...