![Sample our Engineering & Technology journals, sign in here to start your access, latest two full volumes FREE to you for 14 days]({"type":"image" , "src" : "/sda/5933/TOC-Subject-Sample-2021-Engineering-Tech.jpg"})
Abstract
We, the Editor and Publishers of Biofuels have retracted the following article:
Yashvir Singh, Amneesh Singla, Anshul Kumar Singh & Avani Kumar Upadhyay (2018) Tribological characterization of Pongamia pinnata oil blended bio-lubricant, Biofuels, 9:4, 523-530, DOI: 10.1080/17597269.2017.1292017
This article has been retracted due to image duplication and manipulation.
An investigation was conducted, and “worn surface image” panels in Figure 7 were found to be published in two other articles. What the images are said to represent varies by article and the authors have not been able to provide the original images. Thus, the conclusions of the present article cannot be verified.
The two other articles include:
Yashvir Singh, Rajnish Garg & Ajay Kumar (2016) Tribological behavior of pongamia oil as a lubricant additive, Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 38:16, 2406-2412, DOI: 10.1080/15567036.2015.1089341 (the entirety of Figure 6 is identical to Figure 7 of this retracted article)
Yashvir Singh, Rajnish Garg & Suresh Kumar (2017) Effect of load on friction and wear characteristics of Jatropha oil bio-lubricants, Biofuels, 8:1, 125-133, DOI: 10.1080/17597269.2016.1215065 (Figure 8(a) 150 N and 8(d) 150 N are the same, after resizing (stretching), as Figure 7(c) and 7(d) of this retracted article, respectively)
The authors do not agree with the retraction.
We have been informed in our decision-making by our policy on publishing ethics and integrity and the COPE guidelines on retractions. The retracted article will remain online to maintain the scholarly record, but it will be digitally watermarked on each page as “Retracted”.
