Sputtering of water ice induced by C60 bombardment: onset of plume formation.

The interaction of a 5 keV C(60) projectile with amorphous water ice is studied using molecular dynamics computer simulations. The energetic C(60) molecule causes large-scale collisional events in the subsurface region, involving more than 10(4) water molecules in a time of less than 3 ps. The energy deposited in the sample is sufficiently large to turn the ice into a superheated and superdense gas. The gas is expelled into the vacuum, leading to the formation of a flow that manifests itself in the angular and velocity distributions of emitted water molecules.

[The case of Wegener's granulomatosis of the nose, larynx and ear]. / Przypadek choroby Wegenera z lokalizacja w obrebie nosa, ucha i krtani.

We have described a rare case of Wegener's granulomatosis in our 41-year old patient, located in the nose, larynx and ear. The disease usually presents as a triad of respiratory, vascular and kidney location. It may occur as a rapid or indolent progress. We have shown in our paper diagnostic difficulties connected with this disease. The biopsies of involved organs and blood tests are the best steps of establish proper diagnosis. Antineutrophil cytoplasmic antibodies (ANCA) are typical markers of Wegeners's granulomatosis. The conservative therapy including immunosuppression and surgical treatment (laserotherapy) are main methods of management. Our patient was given antibiotic therapy, and immunosuppressive therapy. Her condition improved during the first hospitalisation. Remission lasted very short, and she was admitted to the hospital again and underwent intensive investigations and therapy. We observed dyspnea caused by subglottic stenosis. The histologic examination of the tracheal mucosa showed granulomatous inflammation. After intensive therapy our patient felt better. She has been in our records till now, we observe no progress of disease. Finally, we would like to pay attention to the fact, that early diagnosis is important to prevent complications such subglottic stenosis which can lead to death.

[Intracranial complication of sinusitis in a 18-year old patient]. / Zatokopochodne powiklanie wewnatrzczaszkowe u 18-letniej chorej.

We have described a case of intracranial complications, which were caused by acute inflammation of maxillary sinus. In our patient we observed the development of multilocular intracranial abscesses located in left temporal lobe. However intracranial complications of sinusitis are rare, but they are still a serious problem that results in high mortality. The dominant features were: nighttime headache, fever, amnestic aphasia. The patient was treated surgically--utilizing traditional operation Caldwell-Luce'a. A conservative treatment was administrated during a long period including high-doses of i.v. antibiotics. This kind of patients require an interdisciplinary approach--radiological, neurosurgical and otolaryngological. The diagnosis was made with the aid of X-ray, CT-scan and cerebrospinal fluid examination. In spite of very intensive treatment the patient was unconscious one week. Her condition improved in the third week of her admission. CT-scanning carried out in first week showed brain infection. Repetition of Ct-scans of the head evidenced progression of disease by forming multiple abscesses in left temporal lobe excluding any neurosurgical treatment. Finally the patient's condition improved in the third week of her admission. She was discharged after six weeks of treatment without cranial nerve palsies. Amnestic aphasia lasted next six months.