Modern dairies cause the accumulation of considerable quantity of dairy manure which is a potential hazard to the environment. Dairy manure can also act as a principal larval resource for many insects such as the black soldier fly, Hermetia illucens. The black soldier fly larvae (BSFL) are considered as a new biotechnology to convert dairy manure into biodiesel and sugar. BSFL are a common colo...

Prodigiosin is the only pigment of Serratia that has been subjected to chemical analysis.2' 3 The absorption spectrum of prodigiosin as isolated by Wrede has been presented by Ehrismann and Noethling.4 It has been claimed" that the chemically prepared pigment from the ether extract as obtained by Wrede can be further resolved into two components by column chromatography. The absorption spectrum...

We describe a direct radioimmunoassay for progesterone in saliva. Results for extracted and unextracted samples agree well, showing that extraction with petroleum ether is unnecessary. The direct assay is specific and accurate, and detects as little as 2 pg of progesterone per tube (12 pmol/L). Intra- and inter-assay CVs are less than 10%. The correlation between concentrations of progesterone ...

THE TITLE COMPOUND (SYSTEMATIC NAME 5,6-dihy-droxy-7,8-dimeth-oxy-2-phenyl-chromen-4-one), C17H14O6, is a flavone that was isolated from the petroleum ether-soluble fraction of the rare traditional Chinese medicinal herb Saussurea involucrata. The flavone mol-ecule is almost planar, with a dihedral angle between the planes of the benzo-pyran-4-one group and the attached phenyl group of 1.89 (6)...

This paper described the discovering process of some shortcomings of the conventional fluid catalytic cracking (FCC) process and the proposed two-stage riser (TSR) FCC process for decreasing dry gas and coke yields and increasing light oil yield, which has been successfully applied in 12 industrial units. Furthermore, the multifunctional two-stage riser (MFT) FCC process proposed on the basis o...

A new approach for energy-saving process intensification was demonstrated by a heat integration method taking for instance the C-5 splitter distillation plant existing for extracting pure c-pentane from a petroleum hydrocarbon mixture obtained by naphtha cracking. A process simulation analysis was made without loosening the specifications of separation of the existing plant. A new process-inten...

A suitable model for predicting the product quality of vacuum gas oil (VGO) catalytic hydrocracking is developed. Data were obtained using an experimental catalytic hydrocracking reactor loaded with the Ni-Mo/Al2O3-SiO2 catalyst. A set of experimental runs was conducted under various operating temperatures from 380 to 450 ℃. Three distribution models were used t...

We have synthesized four novel derivatives of podophyllotoxin, the chalcone derivatives namely 2benzylidene-6,7-dimethoxy-4-phenyl-3,4-dihydro-2H-naphthalen-1-one (4a), 2-benzylidene-5,7-dichloro-6hydroxy-4-phenyl-3,4-dihydro-2H-naphthalen-1-one(4b), and the amino-thiazolyl derivatives namely7,8dimethoxy-5-phenyl-4,5-dihydro-naphtha[1,2-d] thiazol-2-yl amine (5a) and 2-amino-6,8-dichloro-5-phen...

Complex process networks featuring multiple energy integration agents (processto-process heat exchangers) offer significant cost benefits while adding additional operational constraints. These networks show potential for multi-time scale dynamics owing to the presence of energy flows spanning multiple orders of magnitude. In previous work, we have developed a graph-theoretic framework to system...

The X-ray crystal structures of salts and zwitterionic Knoevenagel products from 1-dimethylamino-naphthalene-8-carbaldehyde show long N-C bonds between peri-groups which provide models for incomplete nucleophilic attack on a protonated carbonyl group and electron-deficient alkenes respectively. For the salts the N-C bonds lie in the range 1.625-1.638 Å with C-OH bonds intermediate in length bet...