Portland Press Ltd. Bibliometric Report

Introduction

This report provides a comprehensive analytics report of the publisher Portland Press Ltd. including basic bibliometric information, citation data, impact metrics, top journals, publication keywords, etc., over recent years. The Crossref database (up to the end of 2021) processed by ScienceGate has been used for this report as the source of data.

Portland Press Ltd. has published 116158 documents so far, receiving a total of 2497825 citations. These numbers are equal to 0.09% and 0.23% of the total documents and citations in the scientific community, respectively. Portland Press Ltd. has a score of 21.50 as a number of citations per document based on all recorded data. There are different types of documents published by Portland Press Ltd.. In this regard, Journal Article, and Other a with the total document number of 116157, and 1 have the largest share, respectively. These numbers are equal to 100.00%, and 0.00% of the total documents published in Portland Press Ltd. so far, respectively. Portland Press Ltd. has been an active publisher from 1906-2021.

Basic Bibliometric Information

This section provides the bibliometrics data of Portland Press Ltd. over the last 11 years, including the number of published documents, total citations, citations per document, and scaled number of citations per document by year. Share of Portland Press Ltd. documents and citations among all published scientific documents are also presented here. Portland Press Ltd. has the highest annual number of publications in 2020, with 1913 published documents. Most annual citations are also received in 2010, with 31305 citations. The highest citations per document’s scores, scaled by the number of years ahead, are associated with 2020, with scores of 0.84.

Document Types

There are different types of documents published by publishers. In this section, the yearly publication data of Portland Press Ltd. are presented by document type, including , and Journal Articles.

The number of published documents by Portland Press Ltd. are , and 116157 for , and Journal Articles, respectively. These numbers are equal to , and 0.13% of the whole published , and Journal Articles in the database so far, respectively.

The number of received citations by , and Journal Articles of Portland Press Ltd. are , and 2497825, respectively. These numbers are equal to , and 0.24% of the citations received by whole , and Journal Articles of the database so far, respectively.

The h-index value for published , and Journal Articles by Portland Press Ltd. are , and 365, respectively. The corresponding values for the whole data of the database are , and 3201, respectively.

The g-index value for published , and Journal Articles by Portland Press Ltd. are , and 38, respectively. The corresponding values for the whole data of the database are , and 129, respectively.

The score of citations per document for published , and Journal Articles by Portland Press Ltd. are , and 21.504, respectively. The corresponding values for the whole data of the database are , and 11.521, respectively.

The highest number of annually published , and Journal Articles by Portland Press Ltd. are , and 1913, respectively. The corresponding year of maximum publication for , and Journal Articles are , and 2020, respectively.

The highest number of annual received citations by , and Journal Articles published in Portland Press Ltd. are , and 39768, respectively. The corresponding years of maximum received citations for , and Journal Articles are , and 2011, respectively.

The highest values of citations per number of document for , and Journal Articles published in Portland Press Ltd. are , and 34.31, respectively. The corresponding years of maximum values of citations per document for , and Journal Articles are , and 2011, respectively.

Impact Metrics

Various metrics and indicators are used to evaluate the impact and quality of publishers and journals. Here, h-index, g-index, and i-index are selected as impact evaluation metrics of the publisher Portland Press Ltd..

H-index

H-index indicates the number of articles published by a journal/publisher, h, that have been cited at least h times. h5-index and h10-index are the h-index for papers of a publishers/journals published in the last 5 and 10 years, respectively. h-index, h10-index, and h5-index of the documents published by Portland Press Ltd., are 365, 126, and 68, respectively. The corresponding values for the whole data of the database are 3269, 1489, and 795, respectively.

G-index

The g-index indicator is the first g papers of a publisher/journal (sorted by the highest to the lowest number of citations) that have cumulatively received at least g^2 citations. Again, g5-index and g10-index are the g-index for papers of a publishers/journals published in the last 5 and 10 years, respectively. G-index, g10-index, and g5-index of the documents published by Portland Press Ltd. are 38, 18, and 13, respectively. The corresponding values for the whole data of the database are 131, 80, and 55, respectively.

I-n index

I-n index shows the number of publications of a publisher/journal with at least n citations. Read another post here for more detailed information on different research impact metrics. It is to be noted that, i10-index, i25-index, i50-index, i100-index, i250-index, i500-index, i1000-index, i2500-index, i5000-index, and i10000-index of the documents published by Portland Press Ltd., are 53378, 27841, 11842, 3884, 728, 215, 68, 12, 2, and 0, respectively. The corresponding values for the whole data of the database are 21796896, 10617845, 4822066, 1785083, 390499, 114230, 31648, 5505, 1423, and 355, respectively.

Top Journals

This section provides the basic bibliometrics data of the Portland Press Ltd. top journals, including the number of published documents, total citations, and citations per document. Share of documents and citations of each journal among all published documents by Portland Press Ltd. is also presented here. In the following tag cloud chart, top journals are displayed based on the largest number of published documents.

The Top 5 journals of Portland Press Ltd. based on the number of published documents are Biochemical Journal, Biochemical Society Transactions, Biochemical Journal, Clinical Science, and Clinical Science. The numbers of documents published so far by these top 5 journals are 37287, 29996, 17314, 10541, and 6237, respectively. These numbers are equal to 32.100%, 25.823%, 14.906%, 9.075%, and 5.369% of the total documents published by Portland Press Ltd. so far, respectively.

Concerning the number of received citations, the top 5 journals of Portland Press Ltd. are Biochemical Journal, Biochemical Journal, Biochemical Society Transactions, Clinical Science, and Biochemical Journal. The total number of citations received so far by these top 5 journals are 37287, 17314, 29996, 10541, and 3029, respectively. These numbers are equal to 1.493%, 0.693%, 1.201%, 0.422%, and 0.121% of the total citations received by Portland Press Ltd. publications so far, respectively.

Regarding the number of citations received per document, the top 5 journals of Portland Press Ltd. are Biochemical Journal, Biochemical Journal, Biochemical Society Symposium, Biochemical Journal, and Essays in Biochemistry. The numbers of citations received per published document so far by these top 5 journals are 47.249, 34.636, 31.510, 29.839, and 22.905, respectively.

Top Keywords

The Most used keywords are of particular importance for reviewing a publisher. This section provides detailed information about basic bibliometrics data of top used keywords in Portland Press Ltd.. The metrics used here are the number of documents, citations and citations per document. Share of documents and citations of each keyword among whole published documents is also presented here. In the following tag cloud chart, top keywords are displayed based on the largest number of published documents.

According to the number of published documents, the top 10 keywords of the publisher Portland Press Ltd. are in vitro, amino acid, rat liver, protein kinase, amino acids, escherichia coli, plasma membrane, gene expression, growth factor, and fatty acid, respectively. The number of published documents in which the mentioned 10 keywords are used are, 5759, 4350, 3316, 2848, 2612, 2464, 2011, 1865, 1800, and 1722, respectively.

Based on the number of received citations, the top 10 keywords of the publisher Portland Press Ltd. are in vitro, amino acid, protein kinase, rat liver, amino acids, plasma membrane, escherichia coli, growth factor, fatty acids, and gene expression, respectively. The number of citations received by the documents in which the mentioned 10 keywords are used are, 5759, 4350, 2848, 3316, 2612, 2011, 2464, 1800, 1533, and 1865, respectively.

Concerning the score of received citations per document, the top 10 keywords of the publisher Portland Press Ltd. are reactive oxygen species, wide range, oxidative stress, cell death, necrosis factor, transcription factors, signal transduction, cell growth, protein kinase, and amino acid sequence, respectively. The score of citations received per document in which the mentioned 10 keywords are used are, 56.192, 52.665, 47.730, 42.743, 41.253, 40.923, 40.660, 40.590, 39.553, and 39.418, respectively.