Producción Científica

 

 

This research aims to determine the compounds produced from the pyrolyzed Low Linear Density Polyethylene (LLDPE) using Fourier Transform Infrared (FTIR) and Gas Chromatography-Mass Spectroscopy (GC MS). We used pyrolysis of 985 g of 2-mm diameter LLDPE plastic ore at a temperature between 192-194°C for 135 min using a batch reactor (length x width x height = 35 cm x 24 cm x 44 cm) equipped with an outlet connected to two condensers (24°C). To ensure the chemical results, the reactor was connected in series to condensers 1 and 2. The results obtained in condenser 1 were 3 mL of 2-phase liquid with a strong odor. The upper fluid is yellow, and the lower fluid is brown. In condenser 2 (connected directly to condenser 1), 4 mL of yellow single-phase liquid was produced with a strong odor. The liquid obtained from the pyrolysis process was then analyzed by FTIR and GC-MS. FTIR results on both samples showed that the samples contained the functional groups O-H, CH₂, and C=O. The GC-MS results on condenser sample 2 showed that the pyrolysis product contained acetone compounds. This confirmed that pyrolysis caused chemical structural changes in LLDPE due to LLDPE chain bond-breaking reactions, producing many smaller chemical compounds. Additionally, some oxidation happens, which is due to the oxygen content in the reactor. This study provides new insights into the LLDPE pyrolysis mechanism and the physical and chemical properties of the liquid resulting from the pyrolysis process.

 

 

Background: Coronavirus disease 2019 (COVID-19) has had a significant impact on dermatology, but to date no bibliometric analysis of this field has been identified. Therefore, the aim of this study was to perform a bibliometric indicator analysis of the worldwide scientific production of COVID-19 in dermatology. Materials and Methods: An advanced bibliographic search was performed in the Scopus database to identify articles on COVID-19 and dermatology from 2020 to 2021. The collected information was analysed with SciVal software. Bibliometric data were described through figures and summary tables. Results: A total of 1448 documents were collected and analysed. Torello Lotti was the author with the greatest scientific production; however, Esther Freeman had the greatest impact. Harvard University was the institution with the highest number of published articles. Most papers were published in the first quartiles. The United States and Italy were the leading countries in terms of production. Articles with international collaboration had the highest impact. Conclusion: Articles related to dermatology and COVID-19 are mostly published with American and Italian affiliations. In addition, there has been an increase in the distribution of articles published in the first quartile, which would reflect a growing interest in the community. Publications with international collaboration reported the highest impact, so future authors should take this into account.

 

 

Purpose: This study aimed to analyze articles on the diagnosis and treatment of bone and soft tissue sarcoma using positron emission tomography (PET)/computed tomography (CT) published in the last 13 years. The objective was to conduct a bibliometric analysis and identify the research hotspots and emerging trends. Methods: Web of Science was used to search for articles on PET/CT diagnosis and treatment of bone and soft tissue sarcoma published from January 2010 to June 2023. CiteSpace was utilized to import data for bibliometric analysis. Results: In total, 425 relevant publications were identified. Publications have maintained a relatively stable growth rate for the past 13 years. The USA has the highest number of published articles (139) and the highest centrality (0.35). The UDICE-French Research Universities group is the most influential institution. BYUN BH is a prominent contributor to this field. The Journal of Clinical Oncology has the highest impact factor in the field. Conclusion: The clinical application of PET/CT is currently a research hotspot. Upcoming areas of study concentrate on the merging of PET/CT with advanced machine learning and/or alternative imaging methods, novel imaging substances, and the fusion of diagnosis and therapy. The use of PET/CT has progressively become a crucial element in the identification and management of sarcomas. To confirm its efficacy, there is a need for extensive, multicenter, prospective studies.

 

 

Background: Migraine is a global public health concern, affecting both social and individual well-being. Calcitonin gene-related peptide (CGRP), a crucial neuropeptide, holds important research value in understanding migraine pathogenesis. CGRP receptor antagonists and monoclonal antibodies that target CGRP or its receptors have shown efficacy in reducing migraine frequency and severity, presenting a promising therapeutic approach. This study aimed to conduct a comprehensive bibliometric analysis to analyze the current state, research trends, and future directions of CGRP in migraine. Methods: Bibliometric tools including CiteSpace, VOSviewer, etc., were utilized to extract and summarize publications related to CGRP in migraine from the Web of Science Core Collection Database (WOSCC) between 2004 and 2023, as of December 31, 2023. The analysis focused on trends in annual publications, leading countries/regions and institutions, prominent journals and references, influential authors, and high-frequency keywords in the field. Results: A total of 1,821 articles and reviews involving 5,180 authors from 1,315 organizations across 64 countries were included in the study. These publications were distributed across 362 journals and accumulated 56,999 citations by December 31, 2023. An increasing trend was observed in annual publications on CGRP in migraine. The United States emerged as the leading nation in both publications and citations, with academic Peter Goadsby contributing the highest number of publications. The University of Copenhagen stood out as the institution with the most publications, and Cephalalgia emerged as the most influential journal. The most cited paper identified was “Calcitonin gene-related peptide receptor antagonist BIBN4096BS for the acute treatment of migraine” by Jes Olesen, published in the New Engl Med. Keyword frequency analysis revealed prevalent terms such as “migraine,” “CGRP,” and “episodic migraine,” along with emerging topics represented by keywords including “trial,” “monoclonal antibodies,” “preventive treatment,” and “safety.” Conclusion: CGRP is pivotal in migraine pathogenesis, and there is a robust research foundation exploring its role. The US leads in research output on CGRP in migraine. Investigating the mechanism of CGRP and its receptor in migraine remains a key area of interest, particularly focusing on signaling pathways. Future research should target identifying critical therapeutic targets in CGRP antagonist pathways for migraine treatment.

 

 

Purpose This paper explores emerging technologies in higher education libraries indexed in the Web of Science core collection and Scopus for the periods between 1994 and 2024 (January 18, 2024). Design/methodology/approach Data from Web of Science (WoS) and Scopus databases were collected and combined using RStudio software. Once this was completed using RStudio, the combined Scopus and Web of Science Excel file was uploaded into Biblioshiny, an interactive web interface. The data was then categorized to illustrate contributions from authors, journals, countries and academic institutions across the globe. Findings Results and findings related to publication growth trends, annual growth, core journals, impact and productivity of authors, most cited documents, collaborations, network mapping and country contributions on emerging technologies and higher education libraries are presented. Research limitations/implications This topic requires further exploration as academic librarians are fast becoming integrated into the teaching and learning agenda of institutions globally. Practical implications Higher education libraries and library schools to promote the teaching identity of academic librarians by helping them improve their pedagogical and digital skills for online teaching. Social implications Library and information science schools need to fast track the integration of emerging technologies into the curriculum. Higher education libraries should consider the training of staff in order to keep abreast of emerging technologies. Library management must frame their policies and strategies in order to promote the use of emerging technologies in higher education libraries. Originality/value The current study is novel in that it explores emerging technologies and higher education libraries using combined data from Scopus and Web of Science. The topic of emerging technologies and higher education libraries is still developing and therefore is in its infancy. The research is useful for researchers, library management and library schools in the higher education sector globally.

 

 

Objective Using bibliometric methods, this study analyzed and summarized the current situation and development of the global application of botulinum toxin in dermatology. Methods Literature published in the Web of Science Core Collection database from January 1, 2000 to October 28, 2023 was searched for topics such as “Botulinum toxin,” “Dermatology,” and so forth. The number of publications, countries, institutions, journals, authors, cited literature, keywords, and so forth, were analyzed and a visual knowledge map was created using scientometric tools such as CiteSpace, VOSviewer, and Scimago Graphica. Results A total of 2039 documents were retrieved and 1877 documents were included after de-duplication and transformation. The country with the highest number of published periodical articles was the United States; the main research institution was Yonsei University; the author with the highest number of published periodical articles was Kim, Hee Jin; and the high-frequency keywords mainly related to indications, combination therapy, and safety optimization. Conclusion The results of this study provide information on the current status and trends in clinical studies of botulinum toxin in dermatology, which will help researchers identify hotspots and explore new research directions in this field.

 

 

Abstract: Nitrogen plays a fundamental role in plant growth, but its high application has significant negative impacts for the farmers and the environment. This nutrient is often provided in excess to prevent plant growth limitations when it ought to be administered in the exact quantities because many farmers do not have access to technology or affordable soil and plant chemical analyses. Precision agriculture through monitoring of crop nutrition may be possible with quantitative, non-destructive methods and technological tools that allow farmers to conduct a rapid and representative verification of their fertilizer applications. In this sense, we carried out a systematic review and bibliometric analysis of recent scientific research to answer the questions: 1) Can artificial intelligence-based, non-destructive analysis of plant nutrition provide relevant information for decision-making in agricultural systems?, 2) Have recent studies reached the stage of developing technological tools to be applied in agricultural systems and field conditions?, and 3) What is the way forward to achieve popularization of the application and development of technological tools in agricultural systems? We found that non-destructive analyses of foliar nutrition need to provide more supportive information for decision-making given the challenge of interpreting and replicating results in agricultural systems operating under uncontrolled conditions, such as field conditions. To address this issue, we propose developing accessible technological tools, such as mobile applications, tailored to farmers’ needs. However, most studies had not yet considered developing a technological tool as part of their objectives. Therefore, it is critical to develop accessible and affordable technologies and monitoring systems that approach precision agriculture since the conservation and sustainable management of natural resources demands translating scientific knowledge into supporting tools that reach farmers and decision-makers worldwide. The way forward is innovation through technological developments that enhance current agricultural systems.

 

 

The outbreak of the COVID-19 has seriously affected the whole society, and vaccines were the most effective means to contain the epidemic. This paper aims to determine the top 100 articles cited most frequently in COVID-19 vaccines and to analyze the research status and hot spots in this field through bibliometrics, to provide a reference for future research. We conducted a comprehensive search of the Web of Science Core Collection database on November 29, 2023, and identified the top 100 articles by ranking them from highest to lowest citation frequency. In addition, we analyzed the year of publication, citation, author, country, institution, journal, and keywords with Microsoft Excel 2019 and VOSviewer 1.6.18. Research focused on vaccine immunogenicity and safety, vaccine hesitancy, and vaccination intention.

 

 

Background: Since human papillomavirus (HPV) infection is known as one of the main causes of cervical cancer, medical researchers pay significant attention to this issue2. The current study applies the bibliometric method to identify the trends and advancements of research on HPV worldwide. Methods: This descriptive study was conducted using a bibliometric approach. All HPV-related scientific publications in the Web of Science database until 2022, August 30 were included in the statistical population. The Bibliometrix package of the R programming language was used to analyze the data. Results: In the field of HPV, a total of 45,657 scientific publications were retrieved, the majority of which were articles. The countries with the highest publications were the USA (45,954 document), China (9977), and UK (6652). The words “Infection,” “Cancer,” and “Women” are the most important keywords of scientific publications on HPV. “Cancer,” “infection,” and “women” are the more developed and essential in HPV subject area. “Protein,” “gene-expression,” and “human-keratinocytes” are in this quadrant. “DNA,” “squamous-cell carcinoma,” and “head” keywords are basic themes in the HPV subject area. “Human-papillomavirus vaccination,” “knowledge,” and “attitude” are in this quadrant. Conclusion: The study suggests the need to enhance the focus on global and public health aspects within HPV research to encourage greater participation from various countries in international research endeavors.

 

 

Over the past several years, modularity methodology has drawn a lot of attention in the built environment and become a key area of emphasis for the construction sector. By disassembling a structure into standardised, prefabricated parts or modules that may be produced off-site and then assembled on-site, modularity is a construction technique. In order to identify possible research gaps for future studies, this study attempts to evaluate the research studies carried out on modularity technique in the built environment domain. The study also seeks to extract information from present research domain. The SCOPUS database was thoroughly searched for papers pertaining to modularity technique in the built environment using a scientometric review. Research articles from 2019 to 2024 were included in the study, which provided important insights into the themes and developments in the field of modularity methodology. The results showed that modularity technique is becoming more popular, as seen by the large number of publications in 2019. Interestingly, the study found a research gap and very little cooperation with other new developments in the built environment, like digital twins, novel materials, maximising land use, and circular economies. Cluster analysis revealed that the majority of research in this area focuses on the modularity methodology’s component parts, with little investigation into real-world applications across a range of disciplines. The study’s practical implications highlight the necessity for academics, practitioners, and policymakers in the construction sector to take modularity methodology into consideration as a workable and revolutionary strategy.