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Generally, <30% of dairy cattle's nitrogen intake is retained in milk. Large amounts of nitrogen are excreted in manure, especially in urine, with damaging impacts on the environment. This study explores the effect of lowering dietary degradable nitrogen supplies--while maintaining metabolisable protein--on dairy cows' performance, nitrogen use efficiency(More)
Most of the certificateless two-party authenticated key agreement protocols (CTAKA) found in the literature, suffer either serious security problems making them vulnerable to types of attacks or inefficient performance that involves high computational costs. In this paper, we design an secure and efficient CTAKA. Within the proposed scheme, the KGC(More)
The mycoflora of hair of 111 cows, donkeys, rabbits, cats, and dogs were analysed and the frequency of occurrence and the relative importance value of the different fungal species isolated were calculated. Total numbers of species 56, 45, 48, 23, and 11 were recovered from cows, donkeys, rabbits, cats, and dogs respectively. The majority of the(More)
The mycoflora of the hair in 285 sheep from the West Bank of Jordan was analysed and the frequency of occurrence and the relative importance value for different fungal species found were calculated. Ninenty six species which belong to 36 genera were isolated. Forty one of these species were either well-known agents of animal and human mycoses (Trichophyton(More)
The mycoflora of the hair in 178 goats from the West Bank of Jordan was analysed and the frequency of occurrence and the relative importance value for the different keratinophilic fungi found were calculated. One hundred and seven species which belong to 38 genera were isolated. Thirty six of these species were either well recognised agents of mycoses(More)
A model has been developed to predict pig manure evolution (mass, dry and organic matter, N, P, K, Cu and Zn contents) and related gaseous emissions (methane (CH4), nitrous oxide (N2O) and ammonia (NH3)) from pig excreta up to manure stored before spreading. This model forms part of a more comprehensive model including the prediction of pig excretion. The(More)
The main purpose of this paper is to provide a security proof for the certificateless digital signature scheme found in [Hassouna, Bashier, and Barry, A short certificateless digital signature scheme, International Conference of Digital Information Processing, Data Mining and Wireless Communications, 2015, pp. 120–127] in the random oracle model. Two types(More)
Most of the existing mailing systems provide limited authentication mechanisms, including web trust model, password authentication or identity based cryptography. Few existing mailing systems found in the literature provide strong authentication based on public key infrastructure (PKI). However, PKI based-systems generally suffer from certificate management(More)
This paper extends the certificateless public key infrastructure model that was proposed by Hassouna et al by proposing new digital signature scheme to provide true non-repudiation, the proposed signature scheme is short and efficient, it is also has strength point that the KGC has no contribution in signature generation/verification process, therefore any(More)
OBJECTIVES Surgical treatment of a congenital bladder diverticulum is indicated in symptomatic children. Diverticulectomy can be performed by an open or a laparoscopic approach. We report our recent experience in using the pneumovesicoscopic approach for accomplishing vesical diverticulectomy. METHODS We operated on three boys with a mean age of 11.6(More)