Platelet adhesion to collagens immobilized on plastic has been measured, with the following results. (1) Human, but not rabbit, platelets adhered readily to pepsin-extracted monomeric collagens in an Mg2(+)-dependent manner. (2) Rabbit platelets adhered to a monomeric collagen extracted without pepsin by a process that was cation-independent; human platelet adhesion to this collagen exhibited a...

Sub-10 fs resolution pump-probe experiments on methylammonium lead halide perovskite films are described. Initial response to photoexcitation is assigned to localized hot excitons which dissociate to free carriers. This is attested to by band integrals of the pump-probe spectra where photoinduced bleaching rises abruptly 20 fs after photoexcitation. Later stages of spectral evolution are consis...

To the Editor: Dermacentor spp. ticks are found in many countries in Europe, and are vectors for several pathogens, including Francisella tularensis, Coxiella burnetii, Rickettsia spp., and Babesia canis (1,2). Because Dermacentor marginatus ticks require warm dry habitats, these ticks are found in only a few areas in southern Germany, mainly in the Rhine and Main valleys (3). However, these ti...

A new technique [mass-analyzed threshold ionization (MATI)-photodissociation yield spectroscopy] to probe bound excited states of a cation was developed, which measures photodissociation yield of the cation generated by mass-analyzed threshold ionization. A vibrational spectrum of vinyl bromide cation in the (~)B state was obtained using this technique. Optical resolution in the low vibrational...

Objective(s): There is controversial evidence about the effect of methamphetamine (METH) on spatial memory. We tested the time- dependent effects of METH on spatial short-term (working) and long-term (reference) memory in METH –sensitized and withdrawn rats in the Morris water maze. Materials and Methods: Rats were sensitized to METH (2 mg/kg, daily/5 days, SC). Rats were trained in water maze ...

The PSCs are prepared under two environments to explore the effect of excessive PbI 2 at initial days, which revealing excess and its evolution in perovskite thin films. • Triple-cation perovskites were glove box atmospheric environment. Defect passivation with days explored. PCE dramatically increase 21.68% 21.89% evolution. triple cation mixed (CsFAMA) known as one most efficient candidates f...

1. Rautio M, Lonnroth M, Saxen H, Nikku R, Väisanen ML, Finegold SM, et al. Characteristics of an unusual anaerobic pigmented gram-negative rod isolated from normal and infl amed appendices. Clin Infect Dis. 1997;25(Suppl 2):S107–10. 2. Rautio M, Saxen H, Siitonen A, Nikku R, Jousimies-Somer H. Bacteriology of histopathologically defi ned appendicitis in children. Pediatr Infect Dis J. 2000;19:...