during 1980-82, a total number of 4143 stool samples, from 2332 males and 1811 females, referred to the central laboratory of the school of public health, were examined for intestinal parasites. all the specimens were examined for intestinal parasites. all the specimens were examined by formol-ether concentration and wet-mount (ringer solution) techniques. the main prevalent pathogenic parasite...

Various equivalent conditions under which a frame is a Riesz basis of a separable Hilbert space are known. See [8] among others, for instance. We add two new conditions to the list. They are inspired by the projection method proposed in [2], which approximates frame coefficients by using finite subsets of a frame. Our main approach is to transcribe anything involving a frame in a Hilbert space ...

This article summarizes the essential ideas as presented in the book \Communication and Concurrency" by R.Milner [Mil89]. It presents intuitively the concepts of observation equivalence and observation congruence based on a fundamental notion of bisimulation. 1 Modelling Concurrent Systems There are many ways of specifying, designing and implementing a system. Different approaches may arrive at...

We report the detection of a narrow Fe Kα emission line in the Seyfert 1 galaxy NGC 5548 with the Chandra High-Energy Transmission Grating. In the galaxy frame we measure a center energy of 6.402 −0.025 keV, a FWHM of 4515 −2645 km/s, an intensity of 3.6 +1.7 −1.5 × 10 photons cm s, with an equivalent width of 133 −54 eV (errors are 90% confidence for one parameter). The line is only marginally...

intercropping systems lead to reduce weeds population and their biomass. in order to study effect of marigold (calendula officinalis) and mungbean (vigna radiata) intercropping in different sowing times on yield and weeds control a factorial experiment based on randomized complete block design was performed in islamic azad university, tabriz branch, iran, during 2012 in three replications. stud...

a study on the evaluating equivalent damping and response modification factors of frames equipped by pall friction dampers is presented. to do so, buildings with various stories were considered. nonlinear and linear dynamic time history analysis has been performed to evaluate equivalent damping for pall friction dampers. ground motions with various frequency characteristics scaled with iranian ...

One of the many equivalent formulation Köthe's conjecture is assertion that there exists no unital ring which contains two nil right ideals whose sum not nil. We discuss several consequences an observation if Koethe fails then a counterexample in form countable local subring suitable self-injective prime von Neumann regular ring.