2020 was the year our appearances mattered the least. There were no parties to go to, no fancy dinners, no 500-person weddings. Yet, ironically, wall mirror interest skyrocketed. CB2 reported that mirrors were their most-searched home product, with over 4 million inquiries. 1stDibs saw a double digit increase in mirror searches overall, and a…[Leggi tutto]

The selective hydrogenation of a range of substrates is a key technology in both the bulk and fine chemicals industries [1]. In both contexts, selectivity to the desired product is usually a key attribute: loss of reagent to the formation of undesired products is economically undesirable and can lead to challenges in separation downstream. This…[Leggi tutto]

Baby strollers are increasingly popular among the generations of baby boomers. Despite the popularity, the state of innovations in the design of baby strollers has plateaued in recent years. This article illustrates the evolution of the design of baby strollers from the year 1980 to 2014. Based on the review, it was found out that the idea of…[Leggi tutto]

I know you’re looking for a paper bag making machine that’s why you are here.

Have you ever tried writing with a beam of light? Sounds impossible, doesn't it, but it's exactly what a CO2 laser printer does when it makes a permanent copy of data (information) from your computer on a piece of paper. Thanks to sci-fi and spy movies, we tend to think of lasers as incredibly powerful light beams that can slice through chunks of…[Leggi tutto]

The structure of the paper is organized as follows. Section 2 presents the mechanical structure of system. In addition, the dynamic models are constructed, and the influence of parameter and speed variation on the rollers is examined. In Section 3, the control strategy is proposed. Simulations are conducted for verifying the effect of the proposed…[Leggi tutto]