[Ileocaecal actinomycosis - a case report].

Abdominal actinomycosis as an aetiological cause of acute abdomen in immunocompetent patients is considered to be very rare. The authors present a case of a young patient with acute appendicitis in the terrain of specific colitis imitating caecal tumour. Especially nowadays, in the era of globalization, it would be an unnecessary mistake not to think of this aetiological unit when the pain and tenderness in the right hypogastrium with signs of peritonism are expressed.

[Treatment outcomes of colon cancer surgery combined with radical lymphadenectomy].

The authors analyzed a group of 1281 subjects with colorectal cancer operated and followed up in a single institution from I/1992 to VIII/2007. Colon carcinoma patients were assessed separately (C18). Patients with rectal and rectosigmoid tumors are not included in the presentation.

[Complications of the laparoscopic appendectomy].

706 appendectomic procedures using laparoscopy were performed in the Surgical Clinic of the FTN hospital during 2003-2005. The group's mortality rate was nil, the morbidity rated 3.54%.

Synergetic driving concepts for bundled miniature ultrasonic linear motors.

Rotary ultrasonic motors have found broad industrial application in camera lens drives and other systems. Linear ultrasonic motors in contrast have only found limited applications. The main reason for the limited range of application of these very attractive devices seems to be their small force and power range.

Piezoelectric linear motor concepts based on coupling of longitudinal vibrations.

Classically, rotary motors with gears and spindle mechanisms are used to achieve translatory motion. In means of miniaturization and weight reduction piezoelectric linear motors are of interest. Several ultrasonic linear motors found in literature base on the use of two different vibration modes.