The aim of this paper is to present a methodology for optimizing the operation of compressors in parallel in process industries. Compressors in parallel can be found in many applications for example in compressor stations conveying gas through long pipelines and in chemical plants in which compressors supply raw or processed materials to downstream processes. The current work presents an optimi...

T he chemical process industries are probably the least understood of all manufacturing sectors, largely because few final products are sold directly to consumers. The chemical process industries are perhaps best summarized by the BASF ad: “We don’t make the products you buy, we make the products you buy, better.” A consumer who purchases an automobile generally has some appreciation for the se...

Physical properties affecting transport processes inside the gas diffusion layer (GDL) in fuel cells mainly depend on the microscopic structure of its pore space. The presented characterization of the pore space is based on geometric 3D graphs, representing the complex microscopic structure. This description of the open volume contains the essential information on the geometrical structure of t...

We study the physics of spontaneously broken family symmetries acting on the third generation. Massless familons φ associated with such broken symmetries are motivated especially by cosmological scenarios with decaying tau neutrinos. We first note that, in marked contrast with the case for the first two generations, constraints on third generation familon couplings are poor, and are, in fact, n...

The article presents for the first time results of a study preservation features explants 2 rare endemic species under conditions in vitro genebank 12 months. Microshoots Crepis purpurea (Willd.) M. Bieb (Asteraceae) and Scrophularia exilis Popl. (Scrophulariaceae), cultured were included research. Microshoots’ segments 0,5-1,0 cm long used as preservation. placed on an agarized culture medium ...

Chemie Ingenieur TechnikVolume 94, Issue 11 p. 1557-1557 Cover PictureFree Access Titelbild Chem. Ing. Tech. 11/2022 First published: 19 October 2022 https://doi.org/10.1002/cite.202271101AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text full-text accessPlease review our Terms and Conditions of Use check box below share version a...

Within the last two decades tremendous efforts have been made to uncover the potential risks to human health associated with exposure to polychlorinated dibenzop-dioxins and polychlorinated dibenzofurans (PCDD/PCDF), especially for the general population exposed at background levels. Very few other chemicals have been investigated as intensively as these substances, in particular, the most toxi...