Although the bibliometric method has been widely used in a large number of sciences, no bibliometric study has been presented on the vosviewer application as the most prominent software in this area. This study aimed to achieve a bibliometric analysis of research using vosviewer, emphasizing “, environment”,and “, energy”,areas. Various features, including language, chronological trends, source types, subject categories, countries, source titles, affiliations, authors, and author keywords were systematically investigated. The countries’,cooperation, authors’,collaborations based on citations, the author keywords’,occurrences were constructed, visualized, and assessed through the vosviewer. The study indicated that the number of vosviewer-related publications has grown significantly. More than 97% of the total publication were journal articles and conference papers, while all publications in the mentioned fields have been in the form of articles. China was the leading country in publications, followed by Spain, Brazil, Italy, and the UK. As well, the USA and Spain had a large number of cooperation with other countries. Li, J., and Li, H. from China were the most cited authors. “, Energy”, , and “, Environmental Science”,were widely used areas in the most productive journals, as “, Sustainability”,published the most vosviewer articles, followed by “, International Journal of Environmental Research And Public Health”,and “, Journal of Cleaner Production”, . Among the author keywords, “, sustainability”, , “, sustainable development”, , and “, circular economy”,could be recognized. Based on database comparison, the number of publications using the “, Web of Science”,database is higher than “, Scopus”, . However, the increase of articles published in the “, Scopus”,database is more.

Educational technology has grown appreciably in recent years and the number of books and articles published in this field is increasing day by day, and therefore the necessity of scientific research is determined. The current research is a kind of descriptive study that was carried out using scientometric indicators. the research area includes all the articles on Educational technology that were indexed in the Science Direct citation database from 1999 to 2022, and after filtering them, 7550 of them were analyzed with the help of Excel and VOS Viewer software. It was analyzed for analysis and display of data. The results of the research show that the number of articles has an upward trend and 2015 had the largest share in the number of articles. Also, Research articles (7, 442), Journal Procedia-Social and Behavioral Sciences (2, 111), and scientific field Social Sciences (3, 220) were ranked first. 13 clusters were identified that the topics of lifelong learning, instructional design, secondary education, interactive learning environment, architectures for educational, and pedagogical are very popular and also previous in the field of ELearning and subjects: COVID-19, artificial intelligence, gamification, learning analytics, augmented reality, and Distance learning are new in the field of Educational Technology.

Nowadays, implants are considered the most suitable alternatives to restoration of lost organs owing to their good mechanical properties and smooth surface, which are similar to those of bone tissue. One of the newest types of implants is zirconia implant, which reduces the possibility of infection due to its one-piece design. Zirconia implants proved to be biocompatible and less prone to corrosion than their traditional titanium counterparts, making them a beneficial option for dental implantation. Another reason why zirconia implants are superior to titanium ones is their better compatibility with soft tissues and greater durability against pressure and tension. Zirconia implants generate less stimulation of the soft tissues, hence lower levels of irritation and inflammation. As a result, zirconia implants are less likely to cause irritation or inflammation. In this research, articles published within the time period of 1980-2022 were examined and processed using vosviewer software. The total number of articles examined was 3122, 47.6 % of which were published within the last five years. The results revealed that a majority of the articles were from America and Germany. India had the highest Compound Annual Growth Rate (CAGR) of 40 %, followed by Brazil and Spain with the CAGRs of 28 % and 25 %, respectively. Moreover, developing countries such as Poland, Taiwan, Iran, and Egypt have recently started their research activities in this field.

Objective: Circular RNA (circRNA) is of significant interest in genetic research. The aim of this study was to assess global trends in circRNA research production in order to shed new light on future research frontiers. Materials and Methods: In this retrospective study, we conducted a literature search using the Web of Science Core Collection (WoSCC) database on March 21, 2019 to retrieve publications from 2007 to 2018. Excel 2013, CiteSpace V, and vosviewer were used to evaluate bibliometric features that included publication output, countries/regions, institutions, journals, citation frequency, H-index, and research hotspots. Results: Global cumulative publication output on circRNA consisted of 998 papers with a total citation of 28 595 during 2007-2018. China, the US, and Germany were the most prolific countries. China ranked first in H-index (60 times) and citations (13 333 times). The most productive institution was Nanjing Medical University with 73 papers. Biochemical and Biophysical Research Communications (impact factor [IF]2017: 2. 559) ranked first among journals in the number of publications (64 papers). The keywords shifted from "sequence", "intron", and "splice-site" to "transcriptome", "microRNA sponge", "exon circularization", and "circRNA biogenesis" overtime. The burst keywords "transcriptome", "microRNA sponge", "exon circularization", and "circRNA biogenesis" were the latest frontiers by 2018. Conclusion: This is a relatively novel bibliometric analysis to inspect research related to circRNA. The results show that publications have continuously increased in the past decade. China, the US, and Germany were the leading countries/regions in terms of quantity. Recent studies on topics related to circRNA biogenesis and function should be closely followed in this field.

This research aims to determine the scope and pattern of research and understand trends in class-based storage research, to deliver the latest research on the topic of class-based storage for future studies.  This study is based on data derived from several journal publications, limited only to publication years of 2012 to 2023. Harzing's Publish or Perish and vosviewer software were used in data collection. Therefore, 980 articles were obtained based on keywords and processed by using bibliometric analysis. From the results of bibliometric research on the topic of class-based storage, identification of trends and patterns on research growth is obtained, analyzing renewal, obsolescence, and distribution of references, estimating productivity, author, year of publication, most-contributed publishers, and collaboration among authors who discussing interrelated topics. This research shows that in bibliometric studies in class-based storage literature, by involving analysis through keywords contained in titles and abstracts, as well as various analyses of years of publication, most publications are able to deepen and expand the literature in the previous class-based storage-related research. So that the findings in terms of assessment techniques and relationships can be used as information for future researchers in such fields of study. Research on bibliometrics is the main reference, especially in the arrangement of facility layout and warehouse management. The originality provided by this study lies in the presentation of differences and similarities between current researchers and previous researchers and the processing of publication databases based on class-based storage journals. So that all published information on the topic of class-based storage in the last 10 years (2012-2023) could become a basis and reference for further research.