Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 5.687
Filtrar
1.
2.
Artículo en Inglés | MEDLINE | ID: mdl-33805127

RESUMEN

This article reviews literature on manufacturing enterprise performance (MEP) and environmental sustainability (ES) to identify their commonalities and distinguishing factors; it is expected to help determine gaps and paths for future research. Topics are classified based on patterns in the citation networks of 7308 and 6275 MEP and ES articles, respectively. Additionally, a semantic linkage was computed to reveal overlap in vocabulary between the two topics. A total of 17 and 21 topics were found in MEP and ES, respectively, where the main shared theme was the green supply chain. However, research on biofuels is unique to ES, and privatization is unique to MEP, among others. The concept of "performance" has also been covered by MEP and ES researchers. This article provides an objective snapshot of current research trends based on quantitative data, and the findings may be used to guide future research directions at the intersection of MEP and ES.


Asunto(s)
Bibliometría , Publicaciones , Comercio , Predicción , Organizaciones
3.
Pan Afr Med J ; 38: 60, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33854689

RESUMEN

The African Academy of Sciences (AAS) is the preeminent science academy on the African continent, but there is currently no information on the academic productivity of the fellowship members. This study investigated the bibliometric parameters of the AAS medical and health sciences fellows. The demographic information (year of induction, gender, and region of employment in Africa) of the 80 medical and health sciences fellows were obtained from the AAS website. Subsequently, the bibliometric information (total number of publications, H-index scores, citation, and co-authorship counts) were extracted from the Scopus database. The majority of the fellows were from the East (36%) and West (33%) African regions (χ2 = p < 0.001); the North (6%) and Central (4%) regions were vastly underrepresented. Although only 34% of the AAS fellows were women, there was no statistically significant difference (p > 0.05) in the bibliometric parameters of both genders. The year of induction as a fellow and region of employment in Africa significantly (p < 0.05) influenced the bibliometric parameters. For all the fellows combined, their H-index mean (SD) score is 27.9 (17.0), while the median score for the total number of publications is 100, H-index is 27.5, and the citation and co-authorship count is 2,894 and 446, respectively. The fellows from the West African region had the highest number of publications (Mean = 212), citations (Mean = 9,437), and co-authorship count (Mean = 975), and the South African fellows had the highest H-index score (Mean = 40.8). The data presented provide insight into the bibliometric productivity of African scientists compared with their peers from other science academies around the world. Similarly, the data may assist burgeoning scientists aspiring to be AAS fellow set realistic goals toward achieving the stipulated H-index benchmarks.


Asunto(s)
Autoria , Bibliometría , Publicaciones Periódicas como Asunto/estadística & datos numéricos , Publicaciones/estadística & datos numéricos , Academias e Institutos , África , Becas , Femenino , Humanos , Masculino
5.
Zhonghua Yi Shi Za Zhi ; 51(1): 34-42, 2021 Jan 28.
Artículo en Chino | MEDLINE | ID: mdl-33794582

RESUMEN

According to the content of Compendium of Materia Medica quoted from Bencao Tujing(, Illustration Classics for Materia Medica), this paper analyzed Li Shizhen's treatment methods of Bencao Tujing, such as description mode, the first record of drug varieties, distinction of related drugs, the purpose of specific citation content, and the characteristics of citation literature. It is believed that Li Shizhen's citation on Bencao Tujing is comprehensive, scientific, and absorbed the essence of Bencao Tujing. It was a great contribution to Li Shizhen's successful compilation of Compendium of Materia Medica, and Li Shizhen insisted on the principle of treating repetition with deletions, treating deficiency with addition, and treating errors with correction. Li Shizhen corrected realistically the deficiency of "The pictures and annotations are different, the two are not matched with each other, or there are pictures without annotations, or there are articles without pictures,or there are right annotations with the wrong pictures" in Bencao Tujing.


Asunto(s)
Medicamentos Herbarios Chinos , Materia Medica , China , Publicaciones
6.
BMJ Open ; 11(4): e045176, 2021 04 05.
Artículo en Inglés | MEDLINE | ID: mdl-33820790

RESUMEN

OBJECTIVE: Concerns have been raised that the COVID-19 pandemic has shifted research productivity to the disadvantage of women in academia, particularly in early career stages. In this study, we aimed to assess the pandemic's effect on women's COVID-19-related publishing over the first year of the pandemic. METHODS AND RESULTS: We compared the gender distribution of first authorships for 42 898 publications on COVID-19 from 1 February 2020 to 31 January 2021 to 483 232 publications appearing in the same journals during the same period the year prior. We found that the gender gap-the percentage of articles on which men versus women were first authors-widened by 14 percentage points during the COVID-19 pandemic, despite many pertinent research fields showing near equal proportions of men and women first authors publishing in the same fields before the pandemic. Longitudinal analyses revealed that the significant initial expansions of the gender gap began to trend backwards to expected values over time in many fields. As women may have been differentially affected depending on their geography, we also assessed the gender distribution of first authorships grouped by countries and geographical areas. While we observed a significant reduction of the shares of women first authors in almost all countries, longitudinal analyses confirmed a resolving trend over time. CONCLUSION: The reduction in women's COVID-19-related research output appears particularly concerning as many disciplines informing the response to the pandemic had near equal gender shares of first authorship in the year prior to the pandemic. The acute productivity drain with the onset of the pandemic magnifies deep-rooted obstacles on the way to gender equity in scientific contribution.


Asunto(s)
Autoria , Publicaciones/estadística & datos numéricos , Factores Sexuales , Bibliometría , Femenino , Humanos , Masculino , Pandemias , Publicaciones Periódicas como Asunto/estadística & datos numéricos , Caracteres Sexuales
7.
J Infect Public Health ; 14(5): 638-646, 2021 May.
Artículo en Inglés | MEDLINE | ID: mdl-33848893

RESUMEN

BACKGROUND: A novel coronavirus (COVID-19) has taken the world by storm. The disease has spread very swiftly worldwide. A timely clue which includes the estimation of the incubation period among COVID-19 patients can allow governments and healthcare authorities to act accordingly. OBJECTIVES: to undertake a review and critical appraisal of all published/preprint reports that offer an estimation of incubation periods for COVID-19. ELIGIBILITY CRITERIA: This research looked for all relevant published articles between the dates of December 1, 2019, and April 25, 2020, i.e. those that were related to the COVID-19 incubation period. Papers were included if they were written in English, and involved human participants. Papers were excluded if they were not original (e.g. reviews, editorials, letters, commentaries, or duplications). SOURCES OF EVIDENCE: COVID-19 Open Research Dataset supplied by Georgetown's Centre for Security and Emerging Technology as well as PubMed and Embase via Arxiv, medRxiv, and bioRxiv. CHARTING METHODS: A data-charting form was jointly developed by the two reviewers (NZ and EA), to determine which variables to extract. The two reviewers independently charted the data, discussed the results, and updated the data-charting form. RESULTS AND CONCLUSIONS: Screening was undertaken 44,000 articles with a final selection of 25 studies referring to 18 different experimental projects related to the estimation of the incubation period of COVID-19. The majority of extant published estimates offer empirical evidence showing that the incubation period for the virus is a mean of 7.8 days, with a median of 5.01 days, which falls into the ranges proposed by the WHO (0-14 days) and the ECDC (2-12 days). Nevertheless, a number of authors proposed that quarantine time should be a minimum of 14 days and that for estimates of mortality risks a median time delay of 13 days between illness and mortality should be under consideration. It is unclear as to whether any correlation exists between the age of patients and the length of time they incubate the virus.


Asunto(s)
Humanos , Tamizaje Masivo , Publicaciones , Cuarentena
8.
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi ; 38(2): 317-325, 2021 Apr 25.
Artículo en Chino | MEDLINE | ID: mdl-33913292

RESUMEN

To explore the focus and trends in real-world studies in Chinese through knowledge mapping method, databases CNKI, VIP, Wanfang and Sinomed were retrieved, with 1 757 relevant articles published before September 30rd, 2020 finally included, whose bibliographical records were imported into NoteExpress to avoid duplication and check relativity. VOSviewer, a bibliometric analysis tool, was used to analyze their development. It was found that real-world studies have mainly taken shape after 2010, in which traditional Chinese medicine research plays an important role. China Journal of Chinese Material Medica was the leading journal with 120 papers, the China Academy of Chinese Medical Sciences the most contribution institution with 338 papers, and Xie Yanming from the institution the most contribution author with 250 papers. This study helps clinicians and researchers in better understanding the evolution of real-world research over more than two decades in China.


Asunto(s)
Bibliometría , Publicaciones , China , Bases de Datos Factuales
9.
Pathog Glob Health ; 115(3): 178-187, 2021 05.
Artículo en Inglés | MEDLINE | ID: mdl-33657984

RESUMEN

During the Covid-19 pandemic, rich countries employed lockdown and physical distancing policies for transmission control. However, the question still remains whether these measures are also suitable in countries with a fragile economy, which rests mainly on the informal sector. The impacts of lockdown measures in disadvantaged population strata in six low- and middle-income countries (LMICs) were reviewed using i) 93 media reports and ii) 17 published scientific papers. This review showed that those who suffered the most from the lockdown were migrants, workers in the large informal sector, small businesses, slum dwellers, women and elderly, revealing the social, cultural and economic inequalities of societies. Financial and food support for the poor was inadequate and sometimes mismanaged. In the better organized societies, the resilience was stronger (South Korea, Kerala/India) but here also the poor had to suffer the most. It is strongly recommended that outbreak response strategies should particularly focus on the poor and vulnerable population.


Asunto(s)
/economía , Países en Desarrollo/economía , Asia/epidemiología , /psicología , Países en Desarrollo/estadística & datos numéricos , Humanos , Medios de Comunicación de Masas/estadística & datos numéricos , Pandemias , Publicaciones/estadística & datos numéricos , Factores Socioeconómicos
10.
Artículo en Inglés | MEDLINE | ID: mdl-33670290

RESUMEN

Energy poverty is one of the main challenges facing humanity in the 21st century. Research on energy poverty is becoming a common focus of scholars in many areas. Bibliometrics can help researchers dig deep into the information of specific research fields from a quantitative perspective. In this study, we collected 1018 research papers in the field of energy poverty published in the period 1999-2019 from the Web of Science databases and conducted a bibliometric analysis on them. Cleaning and screening of sample papers, matrix construction, and visualization were performed using Bibliometrix, VOSviewer, and HistCite, summarizing the internal and external characteristics of the papers. With regard to external characteristics, a total of 982 research institutions in 80 regions conducted research in this field. There is extensive cooperation between the countries, and the UK, the USA, Australia, and Italy play the most active role in the cooperation network. With regard to internal characteristics, we found the two most representative citation paths: one path starts from the concerns of energy-poor groups and stops at an ethical discussion on energy poverty; the second path is based on the existing technological path, continuously developing coping policies, evaluation methods, and a conceptual framework for dealing with energy poverty. Furthermore, through coupling analysis, we discovered four focuses of energy poverty research: improvement of definition, improvement of evaluation methods, effects of coping policy, and energy justice. Through a comprehensive analysis of existing papers, this paper reveals some limitations of previous studies and recommends some promising directions for future research on energy poverty.


Asunto(s)
Bibliometría , Pobreza , Australia , Italia , Publicaciones
11.
Evol Anthropol ; 30(2): 113-121, 2021 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-33788352

RESUMEN

The relationship history of evolutionary anthropology and genetics is complex. At best, genetics is a beautifully integrative part of the discipline. Yet this integration has also been fraught, with punctuated, disruptive challenges to dogma, periodic reluctance by some members of the field to embrace results from analyses of genetic data, and occasional over-assertions of genetic definitiveness by geneticists. At worst, evolutionary genetics has been a tool for reinforcing racism and colonialism. While a number of genetics/genomics papers have disproportionately impacted evolutionary anthropology, here we highlight the 2002 presentation of an elegantly powerful approach for identifying "signatures" of past positive selection from haplotype-based patterns of genetic variation. Together with technological advances in genotyping methods, this article transformed our field by facilitating genome-wide "scans" for signatures of past positive selection in human populations. This approach helped researchers test longstanding evolutionary anthropology hypotheses while simultaneously providing opportunities to develop entirely new ones. Genome-wide scans for signatures of positive selection have since been conducted in diverse worldwide populations, with striking findings of local adaptation and convergent evolution. Yet there are ethical considerations with respect to the ubiquity of these studies and the cross-application of the genome-wide scan approach to existing datasets, which we also discuss.


Asunto(s)
Antropología Física/ética , Genética de Población/ética , Genoma Humano/genética , Selección Genética/genética , Adaptación Biológica/genética , Antropología Física/organización & administración , Evolución Molecular , Haplotipos/genética , Humanos , Metagenómica/ética , Publicaciones/estadística & datos numéricos
12.
Molecules ; 26(4)2021 Feb 19.
Artículo en Inglés | MEDLINE | ID: mdl-33669498

RESUMEN

Dimethyl fumarate is a cytoprotective and immunomodulatory drug used in the treatment of multiple sclerosis. We performed a bibliometric study examining the characteristics and trends of the top 100 cited articles that include dimethyl fumarate in the title. On 21 September 2020 we carried out an electronic search in the Web of Science (WOS), seeking articles that include the following terms within the title: dimethyl fumarate, BG-12, or Tecfidera. To focus our investigation on original research, we refined the search to include only articles, early access, others, case report, and clinical trials. We obtained a total of 1115 items, which were cited 7169 times, had a citation density of 6.43 citations/item, and an h-index of 40. Around 2010, there was a jump in the number of published articles per year, rising from 5 articles/year up to 12 articles/year. We sorted all the items by the number of citations and selected the top 100 most cited (T100). The T100 had 4164 citations, with a density of 37 citations/year and contained 16 classic research articles. They were published between 1961 and 2018; the years 2010-2018 amassed nearly 80% of the T100. We noted 17 research areas with articles in the T100. Of these, the number one ranking went to neurosciences/neurology with 39 articles, and chemistry ranked second on the T100 list with 14 items. We noticed that the percentage of articles belonging to different journals changed depending on the time period. Chemistry held the highest number of papers during 1961-2000, while pharmacology andneurosciences/neurology led the 2001-2018 interval. A total of 478 authors from 145 institutions and 25 countries were included in the T100 ranking. The paper by Gold R et al. was the most successful with 14 articles, 1.823 citations and a density of 140.23 citations/year. The biotechnological company Biogen led the T100 list with 20 articles. With 59 published articles, the USA was the leading country in publications. We concluded that this study analyzed the use of and research on dimethyl fumarate from a different perspective, which will allow the readership (expert or not) to understand the relevance of classic and recent literature on this topic.


Asunto(s)
Bibliometría , Dimetilfumarato/química , Publicaciones , Autoria
13.
Molecules ; 26(4)2021 Feb 19.
Artículo en Inglés | MEDLINE | ID: mdl-33669627

RESUMEN

Essential oils (EOs) are known to have varying degrees of antimicrobial properties that are mainly due to the presence of bioactive compounds. These include antiviral, nematicidal, antifungal, insecticidal and antioxidant properties. This review highlights the potential of EOs and their compounds for application as antifungal agents for the treatment of skin diseases via conventional and nonconventional approaches. A search was conducted using three databases (Scopus, Web of Science, Google Scholar), and all relevant articles from the period of 2010-2020 that are freely available in English were extracted. In our findings, EOs with a high percentage of monoterpenes showed strong ability as potential antifungal agents. Lavandula sp., Salvia sp., Thymus sp., Citrus sp., and Cymbopogon sp. were among the various species found to show excellent antifungal properties against various skin diseases. Some researchers developed advanced formulations such as gel, semi-solid, and ointment bases to further evaluate the effectiveness of EOs as antifungal agents. To date, most studies on the application of EOs as antifungal agents were performed using in vitro techniques, and only a limited number pursued in vivo and intervention-based research.


Asunto(s)
Antifúngicos/uso terapéutico , Dermatomicosis/tratamiento farmacológico , Aceites Volátiles/uso terapéutico , Animales , Dermatomicosis/microbiología , Humanos , Publicaciones
14.
Molecules ; 26(4)2021 Feb 19.
Artículo en Inglés | MEDLINE | ID: mdl-33669787

RESUMEN

Despite the improvements in life expectancy, neurodegenerative conditions have arguably become the most dreaded maladies of older people. The neuroprotective and anti-ageing potentials of essential oils (EOs) are widely evaluated around the globe. The objective of this review is to analyse the effectiveness of EOs as neuroprotective remedies among the four common age-related neurodegenerative diseases. The literature was extracted from three databases (PubMed, Web of Science and Google Scholar) between the years of 2010 to 2020 using the medical subject heading (MeSH) terms "essential oil", crossed with "Alzheimer's disease (AD)", "Huntington's disease (HD)", "Parkinson's disease (PD)" or "amyotrophic lateral sclerosis (ALS)". Eighty three percent (83%) of the studies were focused on AD, while another 12% focused on PD. No classifiable study was recorded on HD or ALS. EO from Salvia officinalis has been recorded as one of the most effective acetylcholinesterase and butyrylcholinesterase inhibitors. However, only Cinnamomum sp. has been assessed for its effectiveness in both AD and PD. Our review provided useful evidence on EOs as potential neuroprotective remedies for age-related neurodegenerative diseases.


Asunto(s)
Envejecimiento/patología , Enfermedades Neurodegenerativas/tratamiento farmacológico , Neuroprotección , Fármacos Neuroprotectores/uso terapéutico , Aceites Volátiles/uso terapéutico , Humanos , Publicaciones
15.
Molecules ; 26(4)2021 Feb 17.
Artículo en Inglés | MEDLINE | ID: mdl-33671435

RESUMEN

The MDPI journal Molecules is organized into 25 sections that cover many different areas of the broad field of chemistry [...].


Asunto(s)
Química Farmacéutica , Autoria , Geografía , Publicaciones
16.
Artículo en Chino | MEDLINE | ID: mdl-33691367

RESUMEN

Objective: To analyze the research status of ground-level ozone pollution, explore research trends and hot spots, and provide references for future research on air pollution. Methods: Papers on ground-level ozone pollution research published before December 31, 2019 had been retrieved in SCI-E database of the "Web of Science Core Collection" in January 2020. The retrieval strategies were set as follows: TS= ( ("Tropospheric Ozone" OR "Low Level Ozone" OR "Ground Level Ozone") AND ("Air pollution*" OR "Air quality") ) . The survey included 2084 articles. By using bibliometric research and visual analysis tools, the research status of global ground-level ozone pollution was revealed from the aspects of time, discipline, journal, financing, institution, country and key words. Results: Cumulative publications increased in a cubic function of y=0.05x(3)+0.80x(2)+0.74x+4.55 (R(2)=0.999, P<0.01) . The most studied subject was Environmental sciences ecology (1401 articles, 67.23%) . Atmospheric Environment was the journal with the most articles (332 articles, 15.93%) . The United States was the country with the most publications (44.67%, 931/2084) , while China ranked second (17.13%, 357/2084) . 80.39% (287/357) of Chinese papers had funding information. Among the top 10 research institutions, 7 and 2 were affiliated to the United States and China respectively. Source apportionment and human health were high frequency keywords that had appeared in the last 5 years. Conclusion: The research on ground-level ozone pollution is in a good period of development. The United States has a leading position in this area, and China has a good prospect in this field. Pollution source apportionment and human health effects are new research directions.


Asunto(s)
Ozono , Bibliometría , China , Humanos , Publicaciones , Estados Unidos
17.
Zhonghua Shao Shang Za Zhi ; 37(2): 196-200, 2021 Feb 20.
Artículo en Chino | MEDLINE | ID: mdl-33648332

RESUMEN

The International Society of Burn Injury (ISBI) published the second part of the ISBI practice guidelines for burn care in 2018 in the journal of Burns. The main content of the guideline includes first aid for burns, topical drugs, burn infection, management of arteriovenous catheterization and metabolism, exercise and functional training, pain management, sedation, blood transfusion, deep venous thrombosis, mental disorder, and outpatient and discharge management. This article was written with the purpose to interpret the main points of the practice guidelines.


Asunto(s)
Quemaduras , Quemaduras/terapia , Primeros Auxilios , Humanos , Manejo del Dolor , Publicaciones
18.
Artículo en Chino | MEDLINE | ID: mdl-33781037

RESUMEN

Objective: To summarize the research progress of medical emotional labor in China, and provide data reference for medical workers in the field of emotional labor. Methods: In March 2020, we searched the research content of emotional labor of medical workers through CNKI system, and analyzed it by using CiteSpace software. We visualized the topic of emotional labor of medical workers by using the knowledge map formed by keyword co-occurrence and keyword clustering, as well as the emergent words and time zone map. The analysis contents include the basic information characteristics of the selected literature, research hotspots and topics, research trends and frontiers. Results: The first related literature was published in 2008, and 126 related literatures were retrieved. Research hotspots include 'emotional labor', 'nurse', 'work burnout', 'medical staff' and 'work satisfaction', etc. Topics can be divided into three categories: research objects, variables affecting factors and medical workplace. There are 24 emergent words. In 2008, 2011, 2013, and 2015, important turning points for research changes exist. Conclusion: In the future, researchers in China can try to broaden the scope of medical subjects and influencing factors, etc., and be closely linked to the results of existing studies.


Asunto(s)
Satisfacción en el Trabajo , Publicaciones , China , Humanos , Cuerpo Médico , Programas Informáticos
19.
BMC Med Res Methodol ; 21(1): 50, 2021 03 11.
Artículo en Inglés | MEDLINE | ID: mdl-33706715

RESUMEN

BACKGROUND: Outbreaks of infectious diseases generate outbreaks of scientific evidence. In 2016 epidemics of Zika virus emerged, and in 2020, a novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) caused a pandemic of coronavirus disease 2019 (COVID-19). We compared patterns of scientific publications for the two infections to analyse the evolution of the evidence. METHODS: We annotated publications on Zika virus and SARS-CoV-2 that we collected using living evidence databases according to study design. We used descriptive statistics to categorise and compare study designs over time. RESULTS: We found 2286 publications about Zika virus in 2016 and 21,990 about SARS-CoV-2 up to 24 May 2020, of which we analysed a random sample of 5294 (24%). For both infections, there were more epidemiological than laboratory science studies. Amongst epidemiological studies for both infections, case reports, case series and cross-sectional studies emerged first, cohort and case-control studies were published later. Trials were the last to emerge. The number of preprints was much higher for SARS-CoV-2 than for Zika virus. CONCLUSIONS: Similarities in the overall pattern of publications might be generalizable, whereas differences are compatible with differences in the characteristics of a disease. Understanding how evidence accumulates during disease outbreaks helps us understand which types of public health questions we can answer and when.


Asunto(s)
/prevención & control , Publicaciones/estadística & datos numéricos , Publicaciones/tendencias , Infección por el Virus Zika/prevención & control , Virus Zika/aislamiento & purificación , /epidemiología , Estudios de Casos y Controles , Estudios Transversales , Brotes de Enfermedades , Humanos , Pandemias , Publicaciones Periódicas como Asunto/estadística & datos numéricos , Publicaciones Periódicas como Asunto/tendencias , Virus Zika/fisiología , Infección por el Virus Zika/epidemiología , Infección por el Virus Zika/virología
20.
J Chromatogr A ; 1640: 461944, 2021 Mar 15.
Artículo en Inglés | MEDLINE | ID: mdl-33556679

RESUMEN

The development and application of alternative green solvents in analytical techniques consist of trends in sample preparation, since this subject represents an important step toward sustainability in experimental procedures. This review is focused on the main theoretical aspects related to deep eutectic solvents (DES), switchable hydrophilicity solvents (SHS) and supramolecular solvents (SUPRAS). Recent applications are highlighted, particularly for the extraction of different analytes from environmental, biological and food matrices. Moreover, novel configurations are emphasized, aiming for efficient, automated and high-throughput procedures. This review also provides some critical points regarding the use of these solvents and their green aspects.


Asunto(s)
Tecnología Química Verde/métodos , Microextracción en Fase Líquida/métodos , Solventes/química , Interacciones Hidrofóbicas e Hidrofílicas , Publicaciones
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA
...