The cation specific ionophore A23187 (Io) is a useful tool for studying the role of intracellular Ca++ (Ca++)i in physiologic processes. The present studies explore the role of (Ca++)i on Na transport in the toad bladder. Scraped bladder cells exposed to 1 muM Io for 60 min took up 100% more 45Ca than control cells. Io, 1 muM, added to the serosal side of bladders incubated in standard Ringers ...

BACKGROUND Sucralfate is a gastroprotectant with no known systemic effects. The efficacy of sucralfate for prevention and treatment of stress-related mucosal diseases (SRMD) in dogs is unknown. HYPOTHESIS/OBJECTIVES To develop a canine ex vivo model of SRMD and to determine the effect of sucralfate on mucosal barrier function in this model. ANIMALS Gastric antral mucosa was collected immedi...

tarnish and corrosion behavior of three commercial dental amalgams namely am.1, am.2, am.3, have been investigated by utilizing in vitro tests. the corrosion and/or dissolution rate of the three dental amalgams were studied in 0.9 wt% nacl solution, artificial saliva and ringers solution. potentiodynamic polarization technique was employed to study cathodic and anodic polarization behavior, fro...

Tarnish and Corrosion behavior of three Commercial dental amalgams namely Am.1, Am.2, Am.3, have been investigated by utilizing in vitro tests. The corrosion and/or dissolution rate of the three dental amalgams were studied in 0.9 wt% NaCl Solution, artificial saliva and Ringers solution. Potentiodynamic polarization technique was employed to study cathodic and anodic polarization behavior, fro...

Concerns about the potential ‘ringer’ phenomenon (where a student’s online work is done by someone else) are raised frequently about courses deployed wholly or partially online. This study of both fully online and hybrid classes leads to the conclusion that if ringers exists at all, the phenomenon is slight and more prevalent for hybrid classes. While the study is too small for broad generaliza...

The non-linear nature of the superelastic phase transformation in NiTi means that conventional fatigue life theory is difficult to apply. The volume fraction of martensite/parent phase and its role in the fatigue mechanism is not understood. This paper considers the fatigue life of superelastic NiTi alloys when tested at 2Hz in Ringers solution. In agreement with other researchers [1] [2] it wa...

Autor artykułu analizuje treść ankiety powstałej w 1773 r., którą 13 spiskim miastom rozesłał ich administrator Paweł Tiszta. Celem ankiety, zawierającej 37 punktów, było ustalenie politycznego i gospodarczego stanu poszczególnych miast po wygaśnięciu zastawu spiskiego powrocie do Królestwa Węgier. Przedmiotem analizy stały się te części które informują o narodowościowym pochodzeniu katolickich...

OBJECTIVE To determine the incidence, aeriology, and outcome of injuries due to bell ringing. DESIGN Retrospective review of the last six years' issues of Ringing World, advertisement in Ringing World, and a postal questionnaire sent to 20 active ringing towers. SUBJECTS Regular bell ringers. RESULTS Seventy nine injuries were identified both from review and by advertisement in Ringing Wo...