GMRT 333 MHz observations of 6 nearby normal galaxies

We report Giant Meterwave Radio Telescope (GMRT) continuum observations of six nearby normal galaxies at 333 MHz. The galaxies are observed with angular resolutions better than ~20" (corresponding to a linear scale of about 0.4 - 1 kpc). These observations are sensitive to all the angular scales of interest, since the resolution of the shortest baseline in GMRT is greater than the angular size of the galaxies. Further, for five of these galaxies we show that at 333 MHz, the mean thermal fraction is less than 5%. Using archival data at about 1 GHz, we estimate the mean thermal fraction to be about 10% at that frequency. We also find that the nonthermal spectral index is generally steeper in regions with low thermal fraction and/or located in the outer parts of the galaxy. In regions of high thermal fraction, the nonthermal spectral index is flatter, and has a narrow distribution peaking at ~ -0.78 with a spread of 0.16, putting stringent constraints on the physical conditions for generation, diffusion and energy losses of cosmic ray electrons at scales of ~ 1 kpc.Comment: 18 pages, 11 figures, Accepted for publication in MNRA

ХИРУРГИЧЕСКИЙ МЕТОД В ЛЕЧЕНИИ МНОЖЕСТВЕННЫХ МЕТАСТАЗОВ В ЛЕГКИХ ПРИ САРКОМАХ КОСТЕЙ И МЯГКИХ ТКАНЕЙ

Introduction. The aim of this study was to analyze the surgical treatment for multiple intrapulmonary metastases sarcomas of bone and soft tissue. Methods. This analysis includes retrospective survival data from 24 patients with soft tissue sarcomas and bone sarcomas who were treated from January 2004 to December 2014 in MRRC and meet the following criteria: the presence of more than four lesions in the lungs, no progression of the primary tumor, no distant metastases and overall satisfactory status (ECOG 0–1). Survival of patients assessed by Kaplan-Meier method. results. In total 49 pulmonary metastasectomy were performed. There were no postoperative deaths. In 4 patients underwent repeated operations. From this cohort 1-year survival has survived 10 patients (41.6 %), 5-year – 3 (12.5 %). 3 patients are alive 28, 62 and 139 months after surgery with no evidence of progression of tumors. conclusion. The detection of lesion in the pulmonary parenchyma is most often regarded as the poor prognosis of the disease. Individually tailored treatment strategy allows you to increase the overall life expectancy and improve quality of life. The surgical method can be considered as a stage of complex treatment, as in the progression of the disease in the lungs, and in synchronous lesions. Surgical repeated resection may be an appropriate treatment for patients with progression and the justified possibility of an operation

SURGICAL TREATMENT OF MULTIPLE LUNG METASTASIS IN PATIENT WITH SOFT ISSUE AND VISCERAL SARCOMAS

Introduction. The aim of this study was to analyze the surgical treatment for multiple intrapulmonary metastases sarcomas of bone and soft tissue. Methods. This analysis includes retrospective survival data from 24 patients with soft tissue sarcomas and bone sarcomas who were treated from January 2004 to December 2014 in MRRC and meet the following criteria: the presence of more than four lesions in the lungs, no progression of the primary tumor, no distant metastases and overall satisfactory status (ECOG 0–1). Survival of patients assessed by Kaplan-Meier method. results. In total 49 pulmonary metastasectomy were performed. There were no postoperative deaths. In 4 patients underwent repeated operations. From this cohort 1-year survival has survived 10 patients (41.6 %), 5-year – 3 (12.5 %). 3 patients are alive 28, 62 and 139 months after surgery with no evidence of progression of tumors. conclusion. The detection of lesion in the pulmonary parenchyma is most often regarded as the poor prognosis of the disease. Individually tailored treatment strategy allows you to increase the overall life expectancy and improve quality of life. The surgical method can be considered as a stage of complex treatment, as in the progression of the disease in the lungs, and in synchronous lesions. Surgical repeated resection may be an appropriate treatment for patients with progression and the justified possibility of an operation

Toughening mechanisms in a high temperature cyanate ester resin modified with a thermoplastic polyimide

Two techniques were suggested and tested for the recovery time shortening of saturable absorbers on a base of A3B5 compounds including quantum wells. The first one, proposed by authors, is the sample post-growth treatment by UV laser radiation; it implied generation of point defects, which, in its turn, led to electron-hole recombination acceleration and to recovery time shortening by an order of magnitude and more. Another technique based on special design of barriers gave promising results for the fast saturable absorbers. Semiconductor mirrors designed for Yb3+:KY(WO4)2 infrared laser mode locking led to 115 fs stable modelocking regime with average power close to CW operation. Results on fast saturable absorbers for spectral region of 1500 nm are also presente