Relative Effectiveness of X-Rays and Fast Neutrons in Retarding Growth

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

T H E Relative Biological Effectiveness O F Fast Organisms Neutrons 'and X-rays upon Different

A given amount of ionization produced by fast neutrons has an injurious biological action equivalent to that of several times as much ionization produced by x-rays. This has been demonstrated for various biological systems by Lawrence and Lawrence ( l ) , Zirkle and Aebersold ( 2 ) and Lawrence, Aebersold and Lawrence ( 3 ) . This fact indicates that the mechanism of biological action of fast n...

متن کامل

Bimodal Imaging Using Neutrons and X-rays

Experiments that combines the information from two different radiation sources can provide more information than experiments using single radiation sources. This claim was confirmed using the bimodal installation at the thermal neutron imaging beamline NEUTRA at Paul Scherrer Institut. This installation is equipped with a 60-320kV X-ray source and is used for mid-sized samples. The combination ...

متن کامل

Trabecular bone changes induced by fast neutrons versus gamma rays in mice

Background: The trabecular bone changes in the tibia of C3H/HeN mice were measured 12 weeks after whole body irradiation with various doses of fast neutrons (0-2.4 Gy) or 137Cs-generated gamma-rays (0-6 Gy). Materials and Methods: Serum calcium, phosphorus, estradiol concentration and alkaline phosphatase activity were measured. Tibiae were anal...

متن کامل

Digital pulse-shape discrimination of fast neutrons and γ rays

Discrimination of the detection of fast neutrons and γ rays in a liquid scintillator detector has been investigated using digital pulse-processing techniques. An experimental setup with a 252Cf source, a BC-501 liquid scintillator detector, and a BaF2 detector was used to collect waveforms with a 100 Ms/s, 14 bit sampling ADC. Three identical ADC’s were combined to increase the sampling frequen...

متن کامل

Neoplasms of the glandular stomach in mice irradiated with x-rays or fast neutrons.

The incidence of gastric adenocarcinoma in animals is extremely low (13,14), and attempts to produce such tumors with various carcinogenic agents (11), including ionizing radiations (8), have been only moderately successful, at best. The present report deals with a number of malignant and premalignant lesions of the glandu lar stomach of the mouse occurring after wholebody irradiation with x-ra...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Proceedings of the National Academy of Sciences

سال: 1936

ISSN: 0027-8424,1091-6490

DOI: 10.1073/pnas.22.2.134