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The Bremmer series is used to reduce a complex scattering problem to a sequence of simpler single scattering problems. In the Bremmer series, the wave equation is first decomposed into a coupled system of one-way wave equations. The system is then decoupled into a sequence of one-way wave equations with a fixed point iteration. In this paper, a left symbol representation of the decomposition opera

Popular Abstract in Swedish Urinavledning utförs när den normala urinblåsan ej fungerar normalt eller måste avlägsnas p.g.a. cancer. Vid operation enl. Bricker sys urinledarna till ett isolerat tarmsegment ( konduktor ), vars ena ände mynnar på huden som en stomi. Över öppningen på huden har patienten sedan ett uppsamlingsförband för urinen, en ' påse på magen'. Kontinenta former av urinvägsrekonsIn a long-term prospective follow-up in patients randomized to an ileal or colonic conduit, with implantation of one ureter using antireflux technique and the other without, the fall in the mean total GFR exceeded the expected age-related decline. The fall in the mean separate GFR did not differ between refluxing and antirefluxing anastomosis. Patients with a continent caecal reservoir (antireflux

Ligands for the benzodiazepine-binding site of the GABAA receptor can belong to structurally diverse classes of compounds including, in spite of the name of the binding site, many non-benzodiazepine structures. The GABAA receptor is a ligand-gated ion channel assembled of five subunits from eight different classes with multiple isoforms. The physiological effect elicited by benzodiazepines is beli

We find the Shannon limit to bit error rate (BER) as a function of E_b/N_0 for linear coded modulations. Error performance of TCM and other schemes can be compared to this curve. As the bandwidth of the signals in Hz-s/data bit drops, capacity becomes sensitive to the stopband spectrum, and the limit moves strongly away from the BER of practical systems when the stopband rolloff is not severe.

In this paper, wave splitting technique is applied to a homogeneous Timoshenko beam. The purpose is to obtain a diagonal equation in terms of the split fields. These fields are calculated in the time domain from an appropriate set of boundary conditions. The fields along the beam are represented as a time convolution of Green functions with the excitation. The Green functions do not depend on the

A relation between the radiation resistance and the quasi-static polarizability, input capacitance, and input inductance for small electric dipole antennas is investigated. The relation follows from the forward scattering sum rule and sum rules for the input impedance together with resonance models for the partial realized gain and the reflection coefficient.