Most studies using the psychological refractory period (PRP) design suggest that dual-task performance is limited by a central bottleneck. Because subjects are usually told to emphasize Task 1, however, the bottleneck might reflect a strategic choice rather than a structural limitation. To evaluate the possibility that central operations can proceed in parallel, albeit with capacity limitations...

Polyoma virus nephropathy occurs in 3% to 4% of renal transplant recipients, causing graft loss in 50% of cases. The objective of the present study was to explore the effects of age, sex, post-transplantation period and plasma creatinine levels on the polyoma virus infection in kidney transplanted patients. Urine samples were collected from 362 patients, centrifuged and microscopic slides prepa...

Based on specimens collected from bats of different families, we add new species and extend the known ecological distribution and host associations of insect ectoparasites of bats in Peru. New information is provided for the distribution of 26 species of parasites (25 Diptera and 1 Siphonaptera: Ischnopsyllidae). Four species (Neotrichobius ectophyllae, Strebla galindoi, Strebla paramirabilis a...

The progress in determining the coupling constants of mesonic chiral Lagrangians is reviewed, with emphasis on the work performed in three successive European Networks (Eurodaphne I and II, Euridice). Reliable estimates of those constants are essential for making full use of next-to-next-to-leading-order calculations in chiral perturbation theory. The precision in the values of the strong coupl...

The mermithid Heleidomermis magnapapula Poinar and Mullens, a parasite of the biting midge Culicoides variipennis (Coquillett), was exposed to constant temperatures in the laboratory. Survival of the free-living stages and development times of eggs and the parasitic phase were inversely related to temperature. Average preparasite longevity was 70, 46, 42, and 22 hours at 15.6, 21.1, 26.7, and 3...

The study employs modified interactive models and lead-lag models to investigate the correlation between corporate social performace (CSP) and financial performance (CFP) of listed companies in China. The samples are 1228 in both 2005 year and 2006 year, 1251 in the period of 20052006, and 1577 in both 2009 year and 2010 year, 1603 in the period of 2009-2010 year. The serious empirical research...

Aim: The objective of this study was to analyze changes in incidence sexual experience 15-year-old Slovak adolescents between 2006–2018, and use protection against unwanted pregnancy. Design: A series cross-sectional school questionnaires. Methods: Data were obtained from an international Health Behaviour School-Aged Children (HBSC) on a representative sample Slovakian schoolchildren thro...

investigation on structure and dynamics of natural forest ecosystems is an important issue for silvicultural decisions. the aim of this study is to analysis dynamics and structure of a beech stand during 5-year period in the shast kalateh forest in the caspian region, north of iran. data were collected from a 16.9ha permanent research plot established in a natural unlogged stand in 2006. all li...