The sunflower stem weevil, Cylindrocopturus adspersus (LeConte), overwinters as a mature larva at the base of the stalk and in the root crown of cultivated sunflower plants. Sunflower stalks from fields known to be infested with C. adspersus larvae were collected in southeastern North Dakota in October 1991. Larvae from stalks kept outdoors accumulated a high whole-body concentration of trehalo...

The methylated form of mercury (methylmercury) is a potent neurotoxic chemical and a contaminant of concern for fisheries because of its potential effects on ecosystem and human health. In Africa, inland fisheries are a crucial component of food and economic security, yet little information is available on mercury (Hg) contamination trends. The authors compiled published data on Hg contaminatio...

A method for the analysis of 10 perfluorinated compounds (PFCs) in whole fish homogenate is presented and applied to 60 fish samples collected from the Ohio, Missouri, and upper Mississippi Rivers in 2005. Method accuracy ranged between 86 and 125% with limits of quantitation between 0.2 and 10 ng/g wet weight. Intra- and inter-batch precision was generally +/-20%. Perfluorooctane sulfonate (PF...

Disturbances of the sympathetic nervous system have been described in chronic renal failure, but their role in the genesis and maintenance of hypertension frequently associated with this condition has not been established. The neuroadrenergic activity in brain nuclei involved in the regulation of blood pressure in uremic animals has also not been previously evaluated. In these studies, the neur...

Poly (lactic acid) (PLA) is biodegradable, melt processable and environmentally benign aliphatic polyester produced from the fermentation of natural renewable resources like corn, sugar and vegetable. The comparative analysis of the effect of time of heatsetting and wet processing from this research showed that PLA exhibited good textile properties for versatile end applications. This research ...

Thua nao was a Thai alkali fermented product from soybean by Bacillus and it had a special flavour and aroma. The microorganisms involved in traditional thua nao were mixed natural flora of Bacillus, B. subtilis, B. megaterium and B. cereus, contaminated from cooked soybeans. The product had a very strong smell of ammonia. Ammonia content in dried product was lower than in the wet product. The ...

The problems of catalyst deactivation and optimization the mixed feedstock become more relevant when residues are involved as a catalytic cracking feedstock. Through numerical experimental studies cracking, we optimized composition in order to minimize by coke. A pure vacuum gasoil increases yields wet gas gasoline (56.1 24.9 wt%). An increase ratio up 50% reduces yield due 19.9%. However, this...

This paper discusses how a qualitative understanding on the physics of failure can lead to a theoretical derivation of effective features that are useful for condition monitoring of wet friction clutches. The physical relationships between the features and the mean coefficient of friction (COF) which can be seen as the representation of the degradation level of a wet friction clutch are theoret...

In this study, the amounts of dry matter, moisture, crude ash, protein, fat and organic matter in T. boudieri were determined to be 89.75, 10.25, 7.80, 20.13, 3.45 and 81.95% of the dry weight, respectively. The contents of mineral were: macronutrients (mg/g, dry wt) K 63.8, Ca 0.27 and Na 0.2; micronutrients (mg/kg, dry wt) Fe 1455.0, Zn 42.5, Mn 15.8 and Cu 30.1. Toxic elements such as Pb, Ni...