Crop-based irrigation operations in the North West Frontier Province of Pakisatn. Vol.I: Synthesis of findings and recommendataions. Final Report

Irrigation management / Crop-based irrigation / Pakistan / North West Frontier Province

Crop-based irrigation operations in the NWFP: Progress report no.2, Kharif 92 on the Technical Assistance Study, T.A. No.1481-PAK

Irrigation operation / Cropping systems / Irrigation canals / Water users' associations / Institutions / Pakistan

Productive performance of naked neck, frizzle and dwarf laying hens under various natural climates and two nutritional treatments

The productive performance of major genes for feather reduction (naked neck and frizzle) and body size reduction (dwarf) in a dual-purpose layer strain was evaluated in the subtropical coastal region of southeast Africa (Maputo, Mozambique). The experimental material consisted of ight different genetic groups, two diets (14.4 and 16.2% crude protein) and two climatic seasons. Birds were caged individually in a laying house with natural light and ventilation. Traits measured were: temperature and relative humidity, body weight, age at first egg, egg number and weight, feed intake and mortality. The following were calculated: persistence, egg mass, feed efficiency, feed conversion, biological efficiency (EMD/BW 0.75) and productivity (EN/BW 0.75). The main results show that: (1) none of the feather-reducing genes significantly improved egg production or feed efficiency, although the naked neck (Na) excelled in terms of biological efficiency and productivity; (2) the dwarf gene (dw) was associated with delayed sexual maturity, production of fewer and lighter eggs, higher persistence, better feed conversion and higher survivability; (3) elevated temperatures restrained voluntary feed intake, egg number and weight, and body weight gain; (4) the lower dietary protein content resulted in decreased body weight. It was concluded that the genes were not equally responsive to the environments, which offers the opportunity for selective breeding. South African Journal of Animal Science, Vol 31, Issue 3, Oct – Dec (2001): pp.174-180Key Words Temperature, Poultry, Naked neck, Frizzle, Dwarf, Egg production, Laying hen

Characterizing Convergence Conditions for the Mα-Integral

Park, Ryu, and Lee recently defined a Henstock-type integral, which lies entirely between the McShane and the Henstock integrals. This paper presents two characterizing convergence conditions for this integral, and derives other known convergence theorems as corollaries

Cauchy Extension of Mα-Integral and Absolute Mα-Integrability

Park, Ryu, and Lee recently introduced a Henstock-type integral, which lies between the Mcshane and the Henstock integrals. This paper proves the closure property of this new integral under Cauchy extension, and presents a characterization on absolute Mα-integrabilit

Relation entre notation sociale et structure financière des entreprises : une étude empirique.

Relation entre notation sociale et structure financière des entreprises : une étude empirique Cet article étudie le lien entre la structure du capital des entreprises et leur notation sociale. Notre modèle théorique montre que les entreprises les moins éthiques, pour échapper à la sanction du marché financier, recourent plus massivement à l'endettement, notamment à l'emprunt bancaire. En effet, l'intérêt croissant des investisseurs pour la responsabilité sociale fait que les entreprises non éthiques supportent un coût des capitaux propres plus élevé que leurs concurrentes éthiques. Inversement, le coût de la dette n'est pas lié à la qualité éthique de l'entreprise, les banques ne prenant pas en compte le critère éthique dans la fixation des taux d'intérêt. Nous proposons de vérifier que le niveau d'endettement des entreprises est en relation décroissante avec la note RSE (responsabilité sociale de l'entreprise). Nous tenons compte dans notre analyse de l'influence de plusieurs déterminants de la structure du capital, comme les coûts de faillite, le niveau de taxation, les variables d'agence et d'asymétrie d'information. L'étude porte sur un échantillon de 562 entreprises européennes pour lesquelles nous disposons de la note RSE fournie par l'agence de notation Vigéo. La période d'étude s'étend sur les années 1999 à 2007. Nos résultats montrent que la structure financière actuelle des entreprises est encore peu influencée par la note éthique. En revanche, lorsque l'on cherche à comprendre comment cette structure évolue, on identifie clairement la note éthique comme un facteur de changement : plus une entreprise a une bonne note éthique, plus elle se détourne de l'endettement.investissement socialement responsable ; notation éthique ; coût du capital ; endettement ; structure du capital ; optimum.

Crop-based irrigation operations in the North West Frontier Province of Pakistan. Vol.II: Research approach and interpretation. Final Report

Irrigation management / Crop-based irrigation / Research / Irrigation canals / Water demand / Performance evaluation / Agricultural production / Pakistan / North West Frontier Province

High temperature interactions between environmental barrier coating (EBC) ceramics and calcia-magnesia-alumina-silicate (CMAS) glass

Ceramic-matrix-composites (CMCs) are being researched to replace current metallic hot-section components, which would allow for higher operating temperatures. Due to the oxidation of CMCs (usually SiC-based) in the presence of water vapor, dense environmental barrier coatings (EBCs) are needed. At temperatures above 1200 °C, silicate particles (sand, volcanic ash, fly ash, etc.) enter the engine, melt on the hot surfaces and form calcia-magnesia-alumina-silicate (CMAS) glass deposits. The molten CMAS glass can penetrate grain boundaries and cause dissolution, which leads to premature failure. New coatings are needed to protect CMCs from CMAS attack. A new model, based on optical basicities, has been used to predict the reactivity between CMAS and potential EBC ceramics. Based on this analysis, several potential EBC ceramics have been identified: yttrium aluminate (YAlO3), yttrium disilicate (g-Y2Si2O7), ytterbium disilicate (b-Yb2Si2O7), and scandium disilicate (b-Sc2Si2O7). Please click Additional Files below to see the full abstract