Hemostatic radiotherapy in clinically significant tumor-related bleeding: excellent palliative results in a retrospective analysis of 77 patients.

Background: Significant bleeding of tumor sites is a dreaded complication in oncological diseases and often results in clinical emergencies. Besides basic local and interventional procedures, an urgent radiotherapeutic approach can either achieve a bleeding reduction or a bleeding stop in a vast majority of patients. In spite of being used regularly in clinical practice, data reporting results to this therapy approach is still scarce.

Symptom relief, prognostic factors, and outcome in patients receiving urgent radiation therapy for superior vena cava syndrome : A single-center retrospective analysis of 21 years' practice.

Purpose: Superior vena cava syndrome (SVCS) often results from external vessel compression due to tumor growth. Urgent symptom-guided radiotherapy (RT) remains a major treatment approach in histologically proven, rapidly progressive disease. Despite several publications, recent data concerning symptom relief and oncological outcome as well as potential confounders in treatment response are still scarce.

Extremely Nonperturbative Nonlinearities in GaAs Driven by Atomically Strong Terahertz Fields in Gold Metamaterials.

Terahertz near fields of gold metamaterials resonant at a frequency of 0.88 THz allow us to enter an extreme limit of nonperturbative ultrafast terahertz electronics: Fields reaching a ponderomotive energy in the keV range are exploited to drive nondestructive, quasistatic interband tunneling and impact ionization in undoped bulk GaAs, injecting electron-hole plasmas with densities in excess of 10^{19}  cm^{-3}. This process causes bright luminescence at energies up to 0.

Brief report: quality of life is impaired in pediatric burn survivors with posttraumatic stress disorder.

Objective: This study assessed health-related quality of life (HRQOL) and posttraumatic stress disorder (PTSD) in pediatric burn survivors and examined associations between PTSD and HRQOL.

Methods: Forty-three burn survivors, ages 7-16 years, were interviewed at an average of 4.4 years after their accident using the Clinician-Administered PTSD Scale for Children and Adolescents and the TNO-AZL Child Quality of Life Questionnaire.

Characterization of bovine coronavirus isolates/from eight different states in the USA.

Bovine coronavirus isolates from eight different states of the USA were compared for their antigenic properties and susceptibility to hygromycin B. Antigenic differences were observed among the isolates in a one-way hemagglutination-inhibition (HI) test using a polyclonal antiserum against the Mebus bovine coronavirus isolate. Differences were observed on isoelectric focusing among viral proteins with isoelectric points between 4.