Aluminum-based ceramics are used in industry to produce cutting tools that resist extreme mechanical and thermal load conditions during the machining of Ni-based high-entropy alloys. There is wide field application also aerospace industry. Microtexturing reduces contact loads wear tools. However, most published works related electrical discharge alumina hydrocarbons, which creates risks for per...

In this research, catalytic cracking of low-density polyethylene (LDPE) has been carried out in the presence three kinds typical molecular sieves, including ZSM-5, HY and MCM-41, respectively. The effects different catalysts on composition quantity pyrolysis products consisting gas, oil solid material were systematically investigated summarized. Specially, added into LDPE for to obtain regulata...

Cuticular hydrocarbons of arthropods serve multiple functions, including as barriers to water loss and as pheromones and pheromone precursors. In the oviparous German cockroach, Blattella germanica, long-chain hydrocarbons are produced by oenocytes within the abdominal integument and are transported by a blood lipoprotein, lipophorin, both to the cuticular surface and into vitellogenic oocytes....

Let k[G] be the group algebra, where G is a finite abelian p-group and k is a field of characteristic p. A complete classification of finitely generated k[G]-modules is available only when G is cyclic, Cpn , or C2 × C2. Tackling the first interesting case, namely modules over k[C2 × C4], some structure theorems revealing the differences between elementary and non-elementary abelian group cases ...

The direct catalytic conversion of methane (CH4) to higher hydrocarbons has attracted considerable attention in recent years because the increasing supply natural gas. Efficient and selective value-added products, however, remains a major challenge. Recent studies have shown that incorporation phosphorus atoms transition metals improves their selectivity resistance coke formation for many react...

Abstract The aim of this study is to unravel the influence single, double and triple bonds in hydrocarbons on mechanisms adsorption zeolites. Therefore, C2 ethane, ethene ethyne different adsorbents studied by calorimetry. As pure sodium LTA (NaA) FAU (NaX) zeolites calcium exchanged CaNaA CaNaX are used. Based experimental loadings heat adsorption, number distribution cations cation positions ...

Samples were collected and analyzed in a field study to characterize C2–C12 volatile organic compounds (VOCs) emitted at five swine facilities in Eastern North Carolina between April 2002 and February 2003. Two sites employed conventional lagoon and field spray technologies, while three sites utilized various alternative waste treatment technologies in an effort to substantially reduce gaseous ...

In this paper C1, C2 are non empty sets. Let C be a non empty set. One can verify that every membership function of C is quasi total. Let C1, C2 be non empty sets. A membership function of C1, C2 is a membership function of [:C1, C2 :]. Let C1, C2 be non empty sets and let h be a membership function of C1, C2. A fuzzy relation of C1, C2, h is a FuzzySet of [:C1, C2 :], h. In the sequel f , g de...