Vitamin A Deficiency in Commercial Layers - A Case Report

No Abstrac

Theoretical analysis of direct CPCP violation and differential decay width in D±→π±π+π−D^\pm\to \pi^\pm \pi^+\pi^- in phase space around the resonances ρ0(770)\rho^0(770) and f0(500)f_0(500)

We perform a theoretical study on direct $CP$ violation in $D^\pm\to \pi^\pm \pi^+\pi^-$ in phase space around the intermediate states $\rho^0(770)$ and $f_0(500)$. The possible interference between the amplitudes corresponding to the two resonances is taken into account, and the relative strong phase of the two amplitudes is treated as a free parameter. Our analysis shows that by properly chosen the strong phase, both the $CP$ violation strength and differential decay width accommodate to the experimental results.Comment: 15 pages, 5 figure

Effect Of Dietary Phosphorus On Protein Intake And Productive Protein Value Of Young Hybrid African Catfish (Pisces: Clariidae)

Three hundred and sixty four weeks old advanced fry of the hybrid African catfish (Clarias gariepinus (♀) x H. Heterobranchus bidorsalis (♂)) (mean weight, 1.25 ± 0.02 g) were obtained from the hatchery of the African Regional Aquaculture Centre (ARAC), Port Harcourt, Nigeria and held in 15 aerator-fitted glass tanks (55 x 30 x 30 cm3 0.05) of increasing the dietary P level on the response of fish to FFW, FCR, PI and PPV. Key words: Catfish hybrid, dietary phosphorus level, protein intake, productive protein value, protein deposition. Journal Of Agriculture And Social Research Vol. 5 (1) 2005: 18-2

Nutrient Utilization And Growth Responses Of The Frys Of The African Hybrid Catfish (Clarias Gariepinus X Heterobranchus Bidorsalis) To Inorganic Phosphorus Supplements

Sixteen triplicate diets each supplemented with either of 4 inorganic phosphorus (P) sources (monosodium phosphate, monopotassium phosphate, monocalcium phosphate and dicalcium phosphate) at 0.40%, 0.60%, 0.80% or 1.20% level were fed to frys of the African hybrid catfish (Clarias gariepinus x Heterobranchus bidorsalis) (weighing 2.80 ± 0.11 g) at 5% body weight in aquaria for 70 days. A non-P-supplemented diet and a purified diet served as controls. Growth of fish was monitored by weekly protein intake, protein efficiency ratio, nitrogen metabolism, feed conversion, specific growth rate and gain or loss of tissue protein. Proximate composition of the diet was determined. The results showed that the parameters varied significantly (P < 0.05) among (a) the 18 test diets, (b) the sources of inorganic phosphorus and (c) the duration of experiment. The results also indicated that monosodium phosphate was a better source of inorganic phosphorus supplement in the hybrid's diets than other sources. The hybrids responded nutritionally better to control diets than the P-supplemented diets. Key words: Inorganic dietary phosphorus, African hybrid catfish, monosodium phosphate Journal Of Agriculture And Social Research Vol. 5 (1) 2005: 107-117 107

Predicting Tensile and Compressive Moduli of Structural Lumber

Nondestructive bending modulus of elasticity (MOE) of lumber is commonly used as input data to estimate mechanical properties of glued lumber or laminated timber components. Many standard and nonstandard test methods exist to determine MOE. However, when glued components are loaded, the stresses imposed on the lumber subcomponents are quite different from stresses used in determining MOE of the lumber. It is well known that the bending MOE of lumber is somewhat different from its tensile and compressive moduli. Therefore, defining the differences and relationships between bending MOE and tensile and compressive moduli is important. This study predicted the tensile and compressive modulus from dynamic and static bending MOE of major softwood structural lumber in Korea. The measured MOE and tensile and compressive moduli from the same specimens by various test methods were found to differ. In particular, the tensile modulus was twice the compressive modulus for the same specimen. Edgewise bending MOE, which showed the highest correlation with tensile and compressive moduli, was suggested as a suitable input parameter for predicting tensile and compressive moduli. Predicting tensile and compressive moduli from dynamic or flatwise bending MOE of structural lumber is also possible, although with a different relationship. With better prediction of tensile and compression moduli, it is expected that the properties of engineered wood or timber structures can be more accurately estimated

An assessment of knowledge of farming-related hazards and precautionary practices of farmers in Kwara State, Nigeria

This study assessed knowledge of farming-related hazards and precautionary practices of farmers in Kwara State, Nigeria. A total of 160 respondents were selected using a multi-stage random sampling  technique. The statistical techniques used for analysis were frequency count, percentages, Pearson Product Moment correlation (PPMC) and Kruskal wallis ranking. The results show common agricultural  production to include maize, yam and cassava. Results also revealed that general body pain  (mean=1213.24), poor/careless use of farm tools (mean=119.41), sickness/ill health (mean=1193.01),  inhaling of dusts from the air (mean=1122.65) and long distance trekking to farm (mean=1114.08) were the top known hazards among farmers in the study area. Field coat/overall (mean=701.69) ranked 1st, rubber boot/old canvas (mean=692.28) ranked 2nd, use of gloves (mean=646.76) ranked 3rd were the common protective equipment used by farmers in the study area. Other precautionary practices such making of environment clean of debris and sharp objects and cutting of trees/sticks deep into roots to  prevent pointed and sharp edges were indicated by 100% of the respondents. Findings further revealed that major constraints to use of protective equipments include; not aware of it importance (80.0%), not convenience while working (62.5%), I was not trained (58.8%). The Pearson Product Moment Correlation analysis showed that precautionary practices such as field coat/ overall, cap/Hat, nose mask and eye goggle were statistically significant to farmers knowledge of farming-related hazards. The study therefore recommends the need for education and training of farmers and farm workers to increase their knowledge and practices of farm related occupational hazards in the study area.Keywords: knowledge, precautionary practices, farmers, Kwara state

Performance of electronic dispersion compensator for 10Gb/s multimode fiber links

In high-speed optical links, electronic compensation circuits can be utilized to greatly improve the data transmission performance limited by fiber dispersion. In this paper, we develop a full link model, including multimode fibers, optical/electronics/optical components, clock-and-data recovery and electronic compensation circuits. The performance of various electronic compensation techniques, such as feed-forward equalizer and decision feedback equalizer for optical multimode fiber is investigated and numerically evaluated. Finally, a comparison of the performance of each compensation techniques and a proposal of optimal equalizer circuit implementation, achieving a 10-Gb/s transmission over 1-km standard multimode fiber are presented

Growth of Pseudomonas fluorescens on Cassava Starch hydrolysate for Polyhydroxybutyrate production

The potential of local strains of microorganism (Pseudomonas fluorescens) in polyhydroxbutyrate production was investigated in this study. This was with a view to establishing the capabilities of local strains of microorganisms on utilizing renewable and locally available substrates in polyhydroxybutyrate production. This involved hydrolysis of starch extracted from freshly harvested cassava tubers using enzyme-enzyme method of hydrolysis, followed by aerobic fermentation of Pseudomonas fluorescens on a mixture of the hydrolysate and nutrient media in a fermentor in batch cultures. The reducing sugar hydrolysate served as the carbon source and diammonium sulphate as the limiting nutrient. The reaction temperature, pH and agitation rate in the fermentor were maintained at 30°C, 7.5 and 400 rpm respectively. The biomass growth was measured by cell dry weight and the polyhydroxybutyrate content measured by gas chromatography. When the fermentation process was shut down after 84 hour, the substrate consumption by the organism was 9.2 g/L to give a dry cell weight of 1.75 g/L resulting in a biomass yield on substrate (Yx/s) of 0.1902 g/g (19.02 % wt/wt). The gas chromatographic analysis gave a final polyhydroxybutyrate value of 1.254 g/L with corresponding product yield on biomass (Yp/x) of 0.7166 g g-1 [71.66% wt/wt] and product yield on substrate (Yp/s) of 0.1363 g g-1 [13.63% wt/wt]. The results show that the organism accumulated polyhydroxybutyrate in excess of 50 % of the cell dry weight by giving a final polyhydroxybutyrate yield on biomass (Yp/x) of 0.7166 g g-1 [71.66% wt/wt] which agrees with the general trend in polyhydroxybutyrate production. @ JASEMJ. Appl. Sci. Environ. Manage. December, 2010, Vol. 14 (4) 61 - 6