Nutation echoes are generated by radiofrequency (RF) pulses with an inhomogeneous amplitude, B 1 โซุโฌ B 1 (r), in inhomogeneous magnetic fields, B 0 โซุโฌ B 0 (r). The two gradients of strengths G 1 and G 0 , respectively, must be aligned in parallel for a maximum echo signal. After two RF pulses, two
โฆ LIBER โฆ
Transient diffusivity measurements in catalyst pellets with two zones of differing diffusivities
โ Scribed by Tai-Sheng Chou; L. Louis Hegedus
- Publisher
- American Institute of Chemical Engineers
- Year
- 1978
- Tongue
- English
- Weight
- 787 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0001-1541
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A water-specific permeameter was developed to study water diffusion in an unsaturated polyester; these polyesters are often used as high-barrier materials. Low water enrichment of a dry sweeping gas is measured via the dew point temperature, with two hygrometers, one of which is used because of its