The aim of this study was to characterize the pattern of shell occupation by the hermit crab Isocheles sawayai Forest and Saint-Laurent, 1968, from the Caraguatatuba region. The percentage of shell types that were occupied and the morphometric relationships between hermit crabs and occupied shells were analyzed from systematized collections that were conducted monthly from July 2001 to June 200...

Details of 93 roll shaft breakages which have occurred at eight selected sugar mills in Natal since 1979 have been collated and analysed to determine the most likely causes of failure. Theoretical analyses of shaft stresses and fatigue stress concentration factors have been carried out to determine whether present shaft design, machining practices, material specifications and shell assembly tec...

egg production is lowered, with the eggshells becoming pro gressively thinner. The serum calcium of the hen falls and there is a depletion of the calcium and phosphorus contents of the bones. Nevertheless, according to Branion, the percentage composition of the shell remains constant, showing that, as in bone formation, if the mineral is deposited, it is laid down in the normal proportion. Deob...

The present study was conducted to evaluate the responses of Tamoxifen (TAM) administration on sexual maturity, productive and reproductive performance and blood parameters in two local juvenile female strains. Ninety females from each of Gimmizah and Bandarah strains at four weeks of age were divided into three equal groups involving 30 chicks per each and injected intramuscularly with TAM twi...

The consequences of the attractive, short-range nucleon–nucleon (NN) interaction on wave functions Elliott SU(3) and proxy-SU(3) symmetry are discussed. NN favors most symmetric spatial irreducible representation, which corresponds to maximal overlap among fermions. percentage components out total in an function is introduced, through it found, that no irrep more than highest weight for a certa...

Hydraulic fracturing (or fracking) of substrates and proppants into contaminated soils is a developing, but understudied, practice of stimulating in situ bioremediation. In this work, three different purities of the substrate crab shell chitin (SC-20, SC-40, and SC-80), two proppant loadings (sand:chitin mass ratios of 5∶1 and 15∶1), and three chloroethene concentrations (1 and 10 mg∕L trichlor...

This study aimed to investigate the vitamin D levels and some quality features of eggs. A total 150 eggs (75 conventional 75 free-range) were selected for study. The 25-OH determined by liquid chromatography with tandem mass spectrometry (LC-MS/MS) in egg yolks. Furthermore, we evaluated weights egg, yolk, albumen, yolk color as well shape index, shell thickness, percentages shell. significantl...

The effects of L-carnitine supplementation (50-500 mg/kg diet) of a practical layer diet, based on maize, soyabean and wheat, on the performance of laying hens and some indices of egg quality were studied for 8 weeks, using 65-week-old hens kept in cages. Albumen quality (albumen height and Haugh (1937) unit score) was improved, while yolk index and yolk colour score were not affected by dietar...

The green crab (Carcinus maenas) shell is the potential source for numerous bioproducts that are to be utilized in a variety of biomedical and biotechnology applications. Chitin and Chitosan are the most important materials from crab shells and its application in the design of various medical devices such as drug delivery vehicle and tissue engineering construct. Even though the well establishe...

S OF PAPERS 253 145 Effects of Originial XPC on performance of layers. K. E. Anderson1 and J. Frank*2, 1North Carolina State University, Raleigh, 2Diamond V, Cedar Rapids, IA. Laying hens (11 white and 7 brown strains; approximately 17 weeks of age; n = 9594) were utilized in a 16 week study to determine the effect of Saccharomyces cerevisiae fermentation product (Original XPC) on hen day and h...