we investigate a class of fourth-order differential operators with eigenparameter dependent boundary conditions and transmission conditions. a self-adjoint linear operator a is defined in a suitable hilbert space h such that the eigenvalues of such a problem coincide with those of a . we discuss asymptotic behavior of its eigenvalues and completeness of its eigenfunctions. finally, we obtain th...

6 Lehrer, S. S., and G. D. Fasman, Biopolymers, 2, 199 (1964). 7Magnasco, V., G. Gray, and C. Nicora, Nuovo Cimento, 34, 1263 (1964). 8 Natta, G., and P. Corradini, Makromol. Chem., 16, 77 (1955); Nuovo Cimento, Suppl., 15, 68 (1960). 9 Corradini, P., and P. Ganis, Nuovo Cimento, Suppl., 15, 104 (1960). 10 Powell, J., Computer J., 7, 155 (1964). 11 Corey, R. B., and L. Pauling, Proc. Roy. Soc. ...

Introduction: Candida albicans has been isolated in up to 65% of healthy individuals without signs of clinical disease. Mouthwashes can be used for many preventative and therapeutic purposes. This study evaluates the effectiveness of Iranian and foreign mouthwashes against C.albicans as a common fungal flora in the mouth. Materials and methods: In this research, standard strain of C.albicans, A...