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195 results on '"Hammar,C."'

21. Fall 2150

Author

Jaspersen, D., primary, Hammar, C.-H., additional, and Faßbinder, W., additional

Published
2009
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39. Omeprazole-amoxycillin therapy for eradication of Helicobacter pylori in duodenal ulcer bleeding: preliminary results of a pilot study.

Author

Jaspersen, Daniel, Körner, Thomas, Schorr, Wolfgang, Brennenstuhl, Martin, Carl-Heinz-Hammar, Jaspersen, D, Körner, T, Schorr, W, Brennenstuhl, M, and Hammar, C H

Subjects
AMOXICILLIN, BACTERIAL growth, COMBINATION drug therapy, CLINICAL trials, COMPARATIVE studies, DUODENAL ulcers, HELICOBACTER diseases, HELICOBACTER pylori, RESEARCH methodology, MEDICAL cooperation, MICROBIOLOGICAL techniques, OMEPRAZOLE, PEPTIC ulcer, RESEARCH, PILOT projects, EVALUATION research, TREATMENT effectiveness, THERAPEUTICS
Abstract

Thirty-five patients with duodenal ulcer bleeding and Helicobacter pylori-colonization were assigned to receive 2 x 20 mg omeprazole and 3 x 750 mg amoxycillin daily for 2 weeks. Eradication was defined as no evidence of H. pylori infection by urease test and by histology 4 weeks after completion of therapy. Two patients were lost to follow up. All ulcers healed completely (100% ulcer healing rate). Twenty-nine out of the 33 patients were H. pylori-negative (87.9% eradication rate). Three patients complained of typical side effects of amoxycillin (9.1% side effect rate). The patients were prospectively followed for 12 months. After ulcer healing, no maintenance therapy was given. One of the 29 patients in whom H. pylori eradication had been successful suffered a second ulcer hemorrhage with H. pylori reinfection (3.4% relapse rate of ulcer bleeding), and this was managed endoscopically. Recurrent ulcer hemorrhage occurred in 2 out of 4 H. pylori-resistant patients. At the end of the follow-up period, of the patients in whom H. pylori eradication had been initially successful, only the patient with re-bleeding remained reinfected. The 4 H. pylori-resistant patients showed persistent H. pylori colonization. In conclusion, omeprazole plus amoxycillin is a safe and effective treatment for eradicating H. pylori; this treatment reduces the relapse rate of duodenal ulcer bleeding. [ABSTRACT FROM AUTHOR]

Published
1995
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42. HOT ELECTRON POLAR SCATTERING IN INSB

Author

ROYAL INST OF TECH STOCKHOLM (SWEDEN) MICROWAVE DEPT, Hammar,C., Weissglas,P., ROYAL INST OF TECH STOCKHOLM (SWEDEN) MICROWAVE DEPT, Hammar,C., and Weissglas,P.

Abstract

The energy and momentum relaxation of conduction electrons by optical phonons in InSb is studied. The energy band structure calculated by Kane is used. For simplicity, the drifted Maxwellian approach is used and its form for an arbitrary band structure presented. No intrinsic breakdown is obtained. On the contrary, the model gives a voltage-controlled differential negative mobility for high fields. (Author)

Published
1967

43. MIXED ELECTRON SCATTERING IN INSB

Author

ROYAL INST OF TECH STOCKHOLM (SWEDEN) MICROWAVE DEPT, Hammar,C., ROYAL INST OF TECH STOCKHOLM (SWEDEN) MICROWAVE DEPT, and Hammar,C.

Abstract

Numerical calculations of the field dependence of the electron mobility in InSb are presented. The effects of optical polar scattering and deformation potential scattering (acoustic and optical) are summed. The drifted Maxwellian approach is used. The high field dependence of the electron mobility is strongly dependent on the deformation potential. For a deformation potential of 7.2 eV dielectric breakdown is obtained, while for a value of 30 eV a voltage controlled negative differential mobility occurs. (Author)

Published
1967

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