To take advantage from genetic improvement of broiler chickens, updates must be made of the nutritional levels that promote maximum protein accretion and minimum fat deposition. The development of growth models is a valuable tool to understand nutrient deposition in poultry. This article presents experimental results and methodologies used to obtain prediction equations for true digestible lysi...

asphaltene precipitation and deposition is a serious problem in many iranian fields. the deposited asphaltene results in partial or total blockage of the wellbore and wellstring reducing or completely seizing oil production. this paper studies the asphaltene problem and mitigation methods in wellstring systematically. it presents new approach based on the combination of thermodynamic modeling o...

the suitability of three vapor deposition techniques for pore size modification was evaluated using polycarbonate track etched membranes as model supports. a feature scale model was employed to predict the pore geometry after modification and the resulting pure water flux. physical vapor deposition (pvd) and pulsed plasma-enhanced chemical vapor deposition (pecvd), naturally, form asymmetric na...

The PDAPP transgenic mouse overexpresses human amyloid precursor protein V717F (PDAPP minigene) and develops age-related cerebral amyloid-beta protein (Abeta) deposits similar to senile plaques in Alzheimer's disease. We find age-related cortical and limbic Abeta deposition that begins at 8 months and progresses to cover 20-50% of the neuropil in cingulate cortex, entorhinal cortex, and hippoca...

1. Food intake and rates of protein, lipid and energy deposition were measured for lean and obese (fatty) Zucker rats offered to appetite from 34 d of age to slaughter at 66 d of age, one of sixteen semi-synthetic diets. Measurements were also made of the digestibility of dietary protein and the metabolizability of dietary energy. Total carcasses were analysed for protein and lipid, and body en...

The influence of the quality of dietary protein source on growth and protein synthesis and degradation rates was studied in the liver and white muscle of the European eel. Fish were fed Ž . isonitrogenous diets differing in protein source: one control contained fish meal, three others Ž . Ž . incorporating meat meal MM or sunflower meal SFM as the only protein source, and SFM Ž . supplemented w...

Over the past 10 to 15 years there have been very significant changes in pig performance due to selection. The result has been an increase in maximum protein deposition, a shift in the distribution of energy towards more protein and less lipid deposition, an increase in maintenance requirements and a decrease in voluntary feed intake (Knap, 2000). Using national UK data, Walters (2000) estimate...

Functional groups on support membranes are important for the preparation of high-performance membrane adsorbers (MAs). In this work, effects different functional adsorption performance MAs were studied through surface modifications such as alkali treatment, oxidation treatment and polydopamine (PDA) deposition. Our experiment results indicate that chemical bonds prone to form between C-F PVDF a...