background and aims: bovine leukaemia virus (blv) is an oncogenic member of the genus deltaretrovirus of the family retroviridae. blv is the causative agent of enzootic bovine leukaemia and infects cattle worldwide, imposing economic impact on the dairy cattle industry. the purpose of this study was to estimate the seroprevalence of blv in cattle in some provinces of iran. materials and methods...

to determine the effective factors on persistent diarrhea in under five year old children (un5), a total of 1341 subjects were selected between cases referred to sanandaj children hospital for diarrhea in the period between 1st june and 22nd october 1994. the children were questioned for prolongation of diarrheal episode after 14 days of its onset. the investigation showed that the duration of ...

Background: Asthma is the chronic inflammation of airways characterized by eosinophilic infiltration, mucus overproduction, airway hyper-responsiveness and airway remodeling. These changes are induced mostly by cytokines which are produced by T helper (Th) 2 cells. Recently, the role of interleukin-23 (IL-23) in the pathogenesis of adultallergic asthma has been studied. Objective: To explore IL...

Cytochromes c(6) and f react by three et mechanisms under similar conditions. We report temperature and viscosity effects on the protein docking and kinetics of (3)Zncyt c(6)+cyt f(III)→Zncyt c(6)(+)+cyt f(II). At 0.5-40.0°C, this reaction occurs within the persistent (associated) diprotein complex with the rate constant k(pr) and within the transient (collision) complex with the rate constant ...

For time-periodic dissipative and irreducible type-K competitive Kolmogorov systems, it is proved that there is a canonically defined countable family F of unordered, disjoint invariant sets with the property that, for every persistent trajectory whose ω-limit set is not a cycle, there exists a unique trajectory in some element of F such that these two trajectories are asymptotic and the corres...

Automated tumor segmentation in Hematoxylin & Eosin stained histology images is an essential step towards a computer-aided diagnosis system. In this work we propose a novel tumor segmentation approach for a histology whole-slide image (WSI) by exploring the degree of connectivity among nuclei using the novel idea of persistent homology profiles. Our approach is based on 3 steps: 1) selection of...

15. Dillon JC, Weyman AE, Feigenbaum H, Eggleton RC, Johnston K: Cross-sectional echocardiographic examination of the interatrial septum. Circulation 55: 115, 1977 16. Lieppe W, Scallion R, Behar VS, Kisslo JA: Two-dimensional echocardiographic findings in atrial septal defect. Circulation 56: 447, 1977 17. Hagler DJ, Tajik AJ, Seward JB, Mair DD, Ritter DG: Realtime wide-angle sector echocardi...

Hyperbolic decay time series such as, fractional Gaussian noise (FGN) or fractional autoregressive moving-average (FARMA) process, each exhibit two distinct types of behaviour: strong persistence or antipersistence. Beran (1994) characterized the family of strongly persistent time series. A more general family of hyperbolic decay time series is introduced and its basic properties are characteri...

Hyperbolic decay time series such as fractional Gaussian noise or fractional autoregressive moving-average processes exhibit two distinct types of behaviour: strong persistence or antipersistence. Beran (Statistics for Long Memory Processes. London: Chapman and Hall, 1994) characterized the family of strongly persistent time series. A more general family of hyperbolic decay time series is intro...