(c) 2012 Society of Chemical Industry”
“Sputtering
losses of zinc oxide films prepared by radical assisted sputtering were studied. It was found that the sputtering loss can be very severe in oxygenous sputtering processes of zinc oxide films. In general, resputtering caused by negative oxygen ions dominates the sputtering loss, while diffuse deposition plays a minor role. Resputtering is strongly correlated with the sputtering threshold energy of the deposited films and the concentration of O- in the sputtering zone. The balance between the oxygen concentration in the Saracatinib in vitro sputtering zone and the oxidation degree of the growing films depends on the sputtering rate. Our research suggests that a lower oxygen concentration in the sputtering zone and a higher oxidation degree of the growing films are favorable for reducing the resputtering losses. The sputtering loss mechanisms discussed in this work are also helpful for understanding the deposition processes of other magnetron sputtering systems.”
“Objective-To identify
prognostic factors in a large group of dogs with subcutaneous or intramuscular hemangiosarcoma (HSA) or both.
Design-Multi-institutional retrospective cohort study.
Animals-71 dogs with subcutaneous or intramuscular HSA.
Procedures-Medical records of affected dogs were reviewed. The following factors were evaluated for an association with outcome: dog age and sex, clinical signs, anemia, thrombocytopenia, neutrophilia, tumor stage at BIIB057 nmr diagnosis, achievement of complete excision, intramuscular involvement, presence of gross disease, tumor recurrence, and treatment.
Results-Of the find more 7.1 cases identified, 16
(29%) had intramuscular tumor involvement. For all dogs, median time to tumor progression and overall survival time (OST) were 116 and 172 days, respectively; 25% survived to 1 year. Univariate analysis identified presence of clinical signs or metastasis at diagnosis, dog age, tumor size, use of any surgery, and presence of gross disease as predictors of time to tumor progression and OST. There was no significant difference in survival time between dogs with respect to type of HSA. Multivariate analysis confirmed that adequate local tumor control, tumor diameter <= 4 cm, presence of metastasis at diagnosis, and presence of gross disease were significantly associated with OST.
Conclusions and Clinical Relevance-Subcutaneous and intramuscular HSA remains a heterogeneous group of tumors that generally carries a poor prognosis. Adequate local control of smaller tumors with no associated clinical signs or metastasis may provide the best chance of long-term survival. (J Am Vet Med Assoc 2011;238:472-479)”
“We present thermal conductivity measurements of micromachined 500 nm thick silicon-nitride (Si-N) beams suspended between two Si-N islands, in the temperature range from 77 to 325 K.