Measurement of the response of a gallium metal solar neutrino experiment to neutrinos from a [Formula Presented] source

The neutrino capture rate measured by the Russian-American Gallium Experiment is well below that predicted by solar models. To check the response of this experiment to low-energy neutrinos, a 517 kCi source of [Formula Presented]Cr was produced by irradiating 512.7 g of 92.4%-enriched [Formula Presented]Cr in a high-flux fast neutron reactor. This source, which mainly emits monoenergetic 747-keV neutrinos, was placed at the center of a 13.1 ton target of liquid gallium and the cross section for the production of [Formula Presented]Ge by the inverse beta decay [Formula Presented] was measured to be [Formula Presented] The ratio of this cross section to the theoretical cross section of Bahcall for this reaction is 0.95 ±0.12 [Formula Presented] (theor) and to the cross section of Haxton is 0.87±0.11 (expt)±0.09 (theor). This good agreement between prediction and observation implies that the overall experimental efficiency is correctly determined and provides considerable evidence for the reliability of the solar neutrino measurement. © 1999 The American Physical Society

Применение таргетной терапии и выбор оптимальной последовательности лечения в гетерогенной популяции больных метастатическим раком почки. Результаты ретроспективного исследования

Renal cancer is one of the most rapidly spreading diseases in the world. As you know, a few years ago, overall survival of patients with metastatic renal cell carcinoma (mRCC) was disappointing: median overall survival rarely exceeded 13 months, while 5-year survival rate was less than 5 %. Immunotherapy with interferon-alpha and interleukins demonstrated low efficiency. Appearance of targeted therapies for the treatment of mRCC significantly increased the duration and quality of life of patients receiving drug treatment. Nowadays due to this methodology and guided by the results of randomized clinical trials we can choose an optimal sequence of therapy and control the disease in three consecutive lines for about 30 months. In this article we would like to share an experience of the use of targeted therapies in the Saint Petersburg City Clinical Oncology Dispensary in patients with clear-cell mRCC. Рак почки – одно из наиболее активно распространяющихся заболеваний в мире. Как известно, еще несколько лет назад показатели общей выживаемости больных метастатическим почечно-клеточным раком (мПКР) разочаровывали: медиана общей выживаемости редко превышала 13 мес, а 5-летняя выживаемость составляла не более 5 %. Иммунотерапия препаратами группы интерферон альфа и интерлейкинами демонстрировала невысокую эффективность. Появление таргетных препаратов для лечения мПКР существенно увеличило продолжительность и качество жизни пациентов, получающих лекарственное лечение. На сегодняшний день благодаря данной методике и руководствуясь результатами рандомизированных клинических исследований мы можем выбирать оптимальную последовательность терапии и контролировать течение заболевания в 3 последовательных линиях на протяжении около 30 мес. В настоящей статье мы хотели бы поделиться опытом применения таргетных препаратов в Санкт-Петербургском городском клиническом онкологическом диспансере у пациентов со светлоклеточным мПКР.

Measurement of the response of a gallium metal solar neutrino experiment to neutrinos from a 51Cr source

The neutrino capture rate measured by the Russian-American Gallium Experiment is well below that predicted by solar models. To check the response of this experiment to low-energy neutrinos, a 517 kCi source of 51Cr was produced by irradiating 512.7 g of 92.4%-enriched 50Cr in a high-flux fast neutron reactor. This source, which mainly emits monoenergetic 747-keV neutrinos, was placed at the center of a 13.1 tonne target of liquid gallium and the cross section for the production of 71Ge by the inverse beta decay reaction was measured to be (5.55 +/- 0.60 (stat.) +/- 0.32 (syst.)) x 10^(-45) cm^2. The ratio of this cross section to the theoretical cross section of Bahcall for this reaction is 0.95 +/- 0.12 (exp.) +/- 0.03 (theor.) and to the cross section of Haxton is 0.87 +/- 0.11 (exp.) +/- 0.09 (theor.). This good agreement between prediction and observation implies that the overall experimental efficiency for the solar neutrino measurements is correctly determined and provides considerable evidence for the reliability of the solar neutrino measurement.Comment: 20 pages including figures in two column forma

The use of targeted therapies and selection of the optimal treatment sequence in heterogeneous population of patients with metastatic kidney cancer. Results of retrospective study

Renal cancer is one of the most rapidly spreading diseases in the world. As you know, a few years ago, overall survival of patients with metastatic renal cell carcinoma (mRCC) was disappointing: median overall survival rarely exceeded 13 months, while 5-year survival rate was less than 5 %. Immunotherapy with interferon-alpha and interleukins demonstrated low efficiency. Appearance of targeted therapies for the treatment of mRCC significantly increased the duration and quality of life of patients receiving drug treatment. Nowadays due to this methodology and guided by the results of randomized clinical trials we can choose an optimal sequence of therapy and control the disease in three consecutive lines for about 30 months. In this article we would like to share an experience of the use of targeted therapies in the Saint Petersburg City Clinical Oncology Dispensary in patients with clear-cell mRCC