We present formulations of the Trotter-Kato theorem for approximation of linear C0-semigroups which provide very useful framework when convergence of numerical approximations to solutions of PDEs are studied. Applicability of our results is demonstrated using a first order hyperbolic equation, a wave equation and Stokes’ equation as illustrative examples.

A survey on intestinal parasitic infections and some risk factors of infection (social, economic and behavioral) was conducted in suburban area at Simum subdistrict, Mueang district, Nakhon Ratchasima Province during the period of April 3rd to April 11th, 2007. A total of 214 stool samples, from 85 males and 129 females were examined using simple direct smear, Kato’s thick smear and modified Ha...

Artikkeli tarkastelee syitä katomuotojen esiintymiselle yleiskielen hd-yhtymän asemassa (kaheksan) Helsingin puhekielen pitkittäiskorpuksessa. Mahdollisina syinä tarkastellaan esimerkiksi sanan frekvenssiä sekä muotoseikkoja, kuten sijoittumista vokaali- tai konsonanttivartaloon, ja merkitysseikkoja, erisnimiä verrattuna muihin sanoihin. Menetelmällisesti tutkimuksessa hyödynnetään logistisen r...

The Kato-Katz technique is the most widely used diagnostic method in epidemiologic surveys and drug efficacy trials pertaining to intestinal schistosomiasis and soil-transmitted helminthiasis. However, the sensitivity of the technique is low, particularly for the detection of light-intensity helminth infections. Examination of multiple stool samples reduces the diagnostic error; yet, most studi...

Soil transmitted helminths are parasitic groups of worms that live in countries with subtropical or tropical climates. In humans, when exposed to eggs larvae, they can cause infection. Stool examination is divided into qualitative and quantitative examination. Qualitative direct examination, flotation, tape, deposition, thick preparations. Kato-Katz Stoll quantitative. The purpose this study wa...

We introduce and study a special class of Kato manifolds, which we call toric manifolds. Their construction stems from geometry, as their universal covers are open subsets algebraic varieties non-finite type. This generalizes previous constructions Tsuchihashi Oda, in complex dimension 2, retrieves the properly blown-up Inoue surfaces. topological analytical properties manifolds link certain in...

new observations in recent years have accented differences between the two common hookworms, ancylostoma duodenale and necator americanus, with respect to modes of transmision and pathogenicity, and have established ancylostoma ceylanicum as a species distinct from a. braziliense. transmammary and paratenic transmission are now considered to be natural modes of infection in ancylostoma caninum ...