439 research outputs found
Characterization of Chilling Sensitivity of Tropical and Temperate Grasses
C16-C18 fatty acid composition of some lipids in several species of temperate and tropical grasses were measured. The fatty acid composition of phosphatidylglycerol (PG) and sulfoquinovosyl diglyceride (SQDG) indicated significant differences between temperate and tropical grasses. Especially the differences of the fatty acid composition of PG were remarkable. The unsaturated fatty acid content of PG in tropical grasses was lower than the contents in temperate grasses. These differences constantly appeared through the year. These differences were caused by the low content of polyunsaturated fatty acids, or the low contents of C18 fatty acids
Ambient Conditions of Winter Thunderstorms in Japan to Reproduce Observed Gamma‐Ray Glow Energy Spectra
Electric field of thunderclouds modifies components and energy spectra of the cosmic-ray air shower. In particular, thunderstorms accelerate charged particles, resulting in an enhancement of gamma-ray fluxes on the ground, known as a gamma-ray glow. This phenomenon has been observed in recent years by the Gamma-Ray Observation of Winter THunderclouds collaboration from winter thunderstorms in the Hokuriku area of Japan. The present work examines the ambient conditions required to produce spectral features of the previously detected gamma-ray glows, by using Monte Carlo simulations of particle interactions in the atmosphere. We focus on three parameters, the strength and length of the electric field, and the length of a null-field attenuation region below the electrified region. The average spectrum of observed gamma-ray glows in winter thunderstorms of Japan requires an electric field intensity close to 0.31 MV/m, slightly exceeding the Relativistic Runaway Electron Avalanche threshold of 0.284 MV/m. The vertical size of the electric field region should be comparable to 1 km. The estimated attenuation region size is 300–500 m, necessary to reduce the low-energy photon flux of the average gamma-ray glows. There is still a wide range of acceptable parameter sets with degeneracy to make a similar spectrum
Debris-free in-air laser dicing for multi-layer MEMS by perforated internal transformation and thermally-induced crack propagation
MEMS 2008, Tucson, AZ, USA, January 13-17, 200
The Uptake of ACNU in the Experimental Brain Tumor and the Effect of Induced Hypertension - Part II -
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Measurement of CMRg1 Using 18FDG by Quantitative Positron Autoradiography - Establishment of Simplified Standarization Procedure and Evaluation of Rate Constants
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18F-Fluoro-2\u27-Deoxyuridine and Experimental Brain Tumor
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The Clinical Application of 18F-Fluoro-2\u27-Deoxyuridine to the Brain Tumor Patients
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Cerebral Circulation and Metabolism of Malignant Brain Tumor - Clinical Investigation by Positron Emission Computed Tomography -
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The Dissociation Between Glucose and Amino Acid Metabolism in Brain Tumor - Clinical and Experimental Study -
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The Clinical Relevance of 18FdUrd in Diagnosing Brain Tumor
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