scholarly journals RETRACTED: Effect of the solid retention time in the obtention of polyhydroxyalkanoates [version 1; peer review: awaiting peer review]

F1000Research ◽  
2021 ◽  
Vol 10 ◽  
pp. 1210
Author(s):  
Rolando Calero ◽  
Manuel Martínez
Keyword(s):  
Peer Review ◽  
Retention Time ◽  
Editorial Team ◽  
Solid Retention Time ◽  
Link Type ◽  
Academic Record

At the request of the authors, the article titled "Effect of the solid retention time in the obtention of polyhydroxyalkanoates" [version 1; peer review: awaiting peer review]. F1000Research 2021, 10:864 (https://doi.org/10.12688/f1000research.28852.1) has been retracted from F1000Research. Since publication of the article, the corresponding author has notified the Editorial team that this work was originally performed at University of A Coruña with the involvement of María C. Veiga and Christian Kennes, who were not notified regarding the submission of this manuscript or listed as authors. After discussion with all parties, including contact with the corresponding author’s institution, it was agreed that the article would be retracted in order to correct the academic record. As the article contains content which potentially should not have been made publicly available the content of the article has been removed. The authors apologise for this honest error.

scholarly journals RETRACTION: Optimization of conditions for the biological treatment of textile dyes using isolated soil bacteria

F1000Research ◽  
2018 ◽  
Vol 7 ◽  
pp. 730
Author(s):  
Shafkat Shamim Rahman ◽  
Fahim Ahmed Alif ◽  
M. Mahboob Hossain
Keyword(s):  
Peer Review ◽  
Biological Treatment ◽  
Soil Bacteria ◽  
Textile Dyes ◽  
Editorial Team ◽  
Link Type

The article titled “Optimization of conditions for the biological treatment of textile dyes using isolated soil bacteria” ([version 1; referees: peer review discontinued]. F1000Research 2018, 7:351 https://doi.org/10.12688/f1000research.13757.1) by Shafkat Shamim Rahman and colleagues, has been retracted by F1000Research on grounds of misconduct by the first author. Following publication of the article, the editorial team at F1000Research were notified by Romana Siddique, from BRAC University, that the data presented in this paper significantly overlaps with the data in her recently published article : Siddique and Alif; ARRB, 22(5): 1-12, 2018; Article no.ARRB.38637; https://doi.org/10.9734/ARRB/2018/38637.  In response to our queries to the authors, the second and last author listed on this article, Fahim Ahmed Alif and M. Mahboob Hossain, have stated that they were not aware of the submission of this article to F1000Research, and did not agree to be authors. We have evidence which confirms their statement.  After further investigation by the F1000Research team, and a separate investigation by BRAC University, it has become clear that Shafkat Shamim Rahman was not involved with the research presented in this paper, and that the decision to submit and publish the article was taken independently by him, and not his listed co-authors. BRAC University has confirmed that Shafkat Shamim Rahman is not currently based at their institution.

scholarly journals RETRACTION:  How blockchain-timestamped protocols could improve the trustworthiness of medical science

F1000Research ◽  
2017 ◽  
Vol 6 ◽  
pp. 805
Author(s):  
Greg Irving ◽  
John Holden
Keyword(s):  
Peer Review ◽  
Review Process ◽  
Peer Review Process ◽  
Medical Science ◽  
Link Type

At the request of the authors Greg Irving and John Holden, the article titled “How blockchain-timestamped protocols could improve the trustworthiness of medical science” has been retracted from F1000Research. The authors have taken this decision after considering the methodological concerns raised by a peer reviewer during the post-publication open peer review process. As the methodology has been deemed to be unreliable, the article is now retracted. This applies to all three versions of the article: Irving G and Holden J. How blockchain-timestamped protocols could improve the trustworthiness of medical science [version 1; referees: 2 approved]. F1000Research 2016, 5:222 (doi: 10.12688/f1000research.8114.1) Irving G and Holden J. How blockchain-timestamped protocols could improve the trustworthiness of medical science [version 2; referees: 3 approved]. F1000Research 2016, 5:222 (doi: 10.12688/f1000research.8114.2) Irving G and Holden J. How blockchain-timestamped protocols could improve the trustworthiness of medical science [version 3; referees: 3 approved, 1 not approved]. F1000Research 2017, 5:222 (doi: 10.12688/f1000research.8114.3).

scholarly journals Accuracy in detecting inadequate research reporting by early career peer reviewers using an online CONSORT-based peer-review tool (COBPeer) versus the usual peer-review process: a cross-sectional diagnostic study

BMC Medicine ◽  
2019 ◽  
Vol 17 (1) ◽  
Author(s):  
Anthony Chauvin ◽  
Philippe Ravaud ◽  
David Moher ◽  
David Schriger ◽  
Sally Hopewell ◽  
...  
Keyword(s):  
Peer Review ◽  
Primary Outcome ◽  
Review Process ◽  
Peer Review Process ◽  
Early Career ◽  
Diagnostic Study ◽  
Quality Of Reporting ◽  
Cross Sectional ◽  
Link Type ◽  
The Mean

Abstract Background The peer review process has been questioned as it may fail to allow the publication of high-quality articles. This study aimed to evaluate the accuracy in identifying inadequate reporting in RCT reports by early career researchers (ECRs) using an online CONSORT-based peer-review tool (COBPeer) versus the usual peer-review process. Methods We performed a cross-sectional diagnostic study of 119 manuscripts, from BMC series medical journals, BMJ, BMJ Open, and Annals of Emergency Medicine reporting the results of two-arm parallel-group RCTs. One hundred and nineteen ECRs who had never reviewed an RCT manuscript were recruited from December 2017 to January 2018. Each ECR assessed one manuscript. To assess accuracy in identifying inadequate reporting, we used two tests: (1) ECRs assessing a manuscript using the COBPeer tool (after completing an online training module) and (2) the usual peer-review process. The reference standard was the assessment of the manuscript by two systematic reviewers. Inadequate reporting was defined as incomplete reporting or a switch in primary outcome and considered nine domains: the eight most important CONSORT domains and a switch in primary outcome(s). The primary outcome was the mean number of domains accurately classified (scale from 0 to 9). Results The mean (SD) number of domains (0 to 9) accurately classified per manuscript was 6.39 (1.49) for ECRs using COBPeer versus 5.03 (1.84) for the journal’s usual peer-review process, with a mean difference [95% CI] of 1.36 [0.88–1.84] (p < 0.001). Concerning secondary outcomes, the sensitivity of ECRs using COBPeer versus the usual peer-review process in detecting incompletely reported CONSORT items was 86% [95% CI 82–89] versus 20% [16–24] and in identifying a switch in primary outcome 61% [44–77] versus 11% [3–26]. The specificity of ECRs using COBPeer versus the usual process to detect incompletely reported CONSORT domains was 61% [57–65] versus 77% [74–81] and to identify a switch in primary outcome 77% [67–86] versus 98% [92–100]. Conclusions Trained ECRs using the COBPeer tool were more likely to detect inadequate reporting in RCTs than the usual peer review processes used by journals. Implementing a two-step peer-review process could help improve the quality of reporting. Trial registration Clinical.Trials.govNCT03119376 (Registered April, 18, 2017).

Influence of solid retention time on the rheology of MBR sludge

2007 ◽  
Vol 56 (8) ◽  
pp. 151-159 ◽  
Author(s):  
C. Giordano ◽  
A. Pollice ◽  
G. Laera ◽  
D. Saturno ◽  
G. Mininni
Keyword(s):  
Retention Time ◽  
Apparent Viscosity ◽  
Biomass Concentration ◽  
Rheological Behaviour ◽  
Solid Material ◽  
Design Parameters ◽  
Rheological Characterization ◽  
Solid Retention Time ◽  
The One ◽  
Definition Of

The rheological characterization is of crucial importance in sludge management both for biomass dewatering and stabilization purposes and for the definition of design parameters for sludge handling operations. The sludge retention time (SRT) has a significant influence on biomass properties in biological wastewater treatment systems and in particular in membrane bioreactors (MBR). The aim of this work is to compare the rheological behaviour of the biomass in a membrane bioreactor operated under different SRT. A bench scale MBR was operated for four years under the same conditions except for the SRT, that ranged from 20 days to complete sludge retention. The rheological properties were measured over time and the apparent viscosity was correlated with the concentration of solid material under equilibrium conditions. The three models most commonly adopted for rheological simulations were evaluated and compared in terms of their parameters. Steady state average values of these parameters were related to the equilibrium biomass concentration (MLSS). The models were tested to select the one better fitting the experimental data in terms of Mean Root Square Error (MRSE). The relationship between the apparent viscosity and the shear rate, as a function of solid concentration, was determined and proposed.

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