1. Antibodies prepared in the rabbit to penicilloyl-rabbit serum albumin or to penicilloyl-bovine serum albumin were demonstrated by immunodiffusion and absorption methods to be apparently directed exclusively against the penicilloyl moiety. The antibodies could precipitate heavily substituted penicilloyl polylysine, as well as each other, with "reactions of identity". All could mutually deplet...

The aims of this study were to investigate the effects of Zr addition and potentiodynamic polarization on the microstructure and corrosion resistance of Ti–22Nb and Ti–22Nb–6Zr alloy samples. The corrosion tests were carried out in 0.9% NaCl at 37 8C and neutral pH value, utilizing the OCP, potentiodynamic polarization, and electrochemical impedance spectroscopy (EIS) techniques.The results of ...

The combination of antiferroelectricity (AFE) and ferromagnetism (FM) in one structure would allow the development new type multiferroic candidates, which be applicable not only magnetoelectric memories but also novel energy storage devices. Here we propose a candidate LaxSr1-xFe12O19, whose room temperature state could betuned from ferroelectrics (FE) to antiferroelectrics by changing x 0 0.5....

background and objectives: lipases are valuable biocatalysts which are widely used in the detergent, food, dairy and pharmaceutical industries. the aims of the present study included the isolation of a lipase-producer from industrial zones and the partial characterization of the enzyme. materials and methods: a number of bacteria were isolated from sites related to the oil industries. an isolat...

the interaction of bovine serum albumin ( bsa) and egg albumin with water solublephthalocyanine, cobalt (ιι) 4, 4′ , 4′′, 4′′′- tetrasulfophthalocyanine ( cotspc) , has been studiedby the uv- vis method at ph 7.0 and five different temperatures 20, 25, 30, 35 and 40°c. theformation constants have been elucidated by using spectrophotometric titration and computersquad program data refinement. th...

A method is introduced that measures the spatial-migration rate of electronic excitation in condensed media over distances of the order of 0.1 microm. Two volume holographic gratings of widely differing modulation periods are simultaneously produced, using a phase-conjugate wave geometry of degenerate four-wave mixing. Spatial migration results in a reduced scattering efficiency of one grating ...

Elastic scattering -of the heavy particle obeying Bose statistics is examined by the relativistically invariant equations recently developed by Proca and by Dirac. Perturbation calculus of the "variation of constants" type is applied. For the evaluation of certain sums occurring in the scattering cross sections, destruction operators are constructed similar to those first developed by Weisskopf...

A translation invariant Hamiltonian H in the nonrelativistic quantum electrodynamics is studied. This Hamiltonian is decomposed with respect to the total momentum PT: H = ∫ ⊕ Rd H(P )dP, where the self-adjoint fiber Hamiltonian H(P ) is defined for arbitrary values of coupling constants. It is discussed a relationship between rotation invariance of H(P ) and polarization vectors, and functional...

Insulating helimagnetic Cu2OSeO3 shows sizeable magnetoelectric effects in its skyrmion phase. Using magnetization measurements, magneto-current analysis and dielectric spectroscopy, we provide a thorough investigation of magnetoelectric coupling, polarization and dielectric constants of the ordered magnetic and polar phases of single-crystalline Cu2OSeO3 in external magnetic fields up to 150 m...