in a case control study the effects of literacy, socio-economic status and the fertility behavior of mothers were fully investigated in two groups. out of 13123 babies born in 17 hospitals during almost 8 months in 1988-1989 in tehran 730 had a low birth weight (less than 2500 gr). as a control group, 1460 births were randomly selected from normal weight births. some basic findings are as follo...

This experiment was conducted to evaluate the effects of different levels of dried lemon pulp (DLP) on performance, carcass traits, blood biochemical and immunity parameters of broilers. In this experiment 240 of broilers (Ross-308) were used in a completely randomized design with 4 treatments and 3 replicates (with 20 birds in each replicate) from 1 to 42 days. Experimental diets included: 1) ...

background: low birth weight (lbw) is one of the major determinants of neonatal survival as well as postnatal morbidity. objective: the main objective of the present study was to determine neonatal mortality rate (nmr) in lbw infants in yazd, iran. materials and methods: in a prospective-cohort study, all births in the maternity hospitals of yazd, iran in 2004 were evaluated and mortality rate ...

There are various patch antennas used for Wi-Fi and Wi-MAX applications. But, the problems with them are low gain, low power handling capacity and hence, conventional yagi-uda antennas are used. Conventional yagi-uda antennas are used in applications where high gain and directionality are required. Generally, number of directors are added to increase gain of these antennas. But, here we present...

despite providing robustness, high-gain observers impose a peaking phenomenon, which may cause instability, on the system states. in this paper, an adaptive saturation is proposed to attenuate the undesirable mentioned phenomenon in high-gain observers. a real-valued and differentiable sigmoid function is considered as the saturating element whose parameters (height and slope) are adaptively tu...

Wyner-Ziv coding enables low complexity video encoding with the motion estimation procedure shifted to the decoder. However, the accuracy of decoder motion estimation is often low, due to the absence of the input source frame (at the decoder). In this paper, we propose a novel Wyner-Ziv successive refinement approach to improve the motion compensation accuracy and the overall compression effici...

a complete procedure for the design of w-band low noise amplifier in mmic technology is presented. the design is based on a simultaneously power and noise matched technique. for implementing the method, scalable bilateral transistor model parameters should be first extracted. the model is also used for transmission line utilized in the amplifier circuit. in the presented method, input/output ma...