Antibubbles are ephemeral objects. Their lifetime is driven by the slow drainage of the air shell from the bottom to the top of the antibubble under the action of hydrostatic pressure. We show in this paper that this argument is only valid if the water used to make the surfactant mixture is saturated in air. Otherwise, two paths are used by the air, which conduct to the thinning and the eventua...

By microbial transformation of tylosin (I), the following eight new acyl derivatives were obtained: 3-acetyltylosin (II), 3-propionyltylosin (III), 4"-butyryltylosin (IV), 4"-isovaleryltylosin (V), 3-acetyl-4"-butyryltylosin (VI), 3-acetyl-4"-isovaleryltylosin (VII), 3-propionyl-4"-butyryltylosin (VIII) and 3-propionyl-4"-isovaleryltylosin (IX).

The structure of physiologically active substances, actinopyrones A, B and C, produced by Streptomyces pactum S12538 were determined on the basis of their spectral and chemical character. These substances were structurally related to piericidin A1.

The effects of element substitution and doping on the magnetic properties magnetocaloric effect LaFe11.5Si1.5 compound were investigated. crystals LaFe11.5Si1.5, La0.8Nd0.2Fe11.5Si1.5, LaFe11.5Si1.5C0.2 compounds all showed cubic NaZn13-type structures, but lattice La0.8Nd0.2Fe11.5Si1.5 shrank expanded. All three had characteristic first-order transition due to obvious itinerant-electron metama...

CONTEXT The Pain Anxiety Symptoms Scale (PASS) was designed to assess pain-related anxiety and fear. Although the scale is a reliable measure with good psychometric properties, its validity among ethnic Chinese has yet to be evaluated. OBJECTIVES This study aimed to translate the English-language version of the 20-item PASS into Chinese (ChPASS-20) and evaluate its factor structure, reliabili...

We propose a new approach for the study of the Jacquet module of a Harish-Chandra module of a real semisimple Lie group. Using this method we investigate the structure of the Jacquet module of principal series representation generated by the trivial K-type.