In recent years methods of tissue culture for rapid and large-scale propagation of economic and horticultural plants have been greatly developed(1-4)The wide application of tissue culture to the production of orchid a...In recent years methods of tissue culture for rapid and large-scale propagation of economic and horticultural plants have been greatly developed(1-4)The wide application of tissue culture to the production of orchid and other ornamental plants was well known[5,6].展开更多
The role played by amino acids in acupuncture analgesia has not yet been well investigated. It was reported that the contents of γ-amino butyric acid (GABA) and other amino acids in the cortex and thalamus of mice ch...The role played by amino acids in acupuncture analgesia has not yet been well investigated. It was reported that the contents of γ-amino butyric acid (GABA) and other amino acids in the cortex and thalamus of mice changed significantly before and after electroacupuncture (EA). Using special drugs to alter the GABA contents of展开更多
XPS studies on the structure of three important members of heteronitro-tricyclic compounds have been reported by the present authors before. Experimental results have confirmed the existence of N→B, N→Si and N→Ti d...XPS studies on the structure of three important members of heteronitro-tricyclic compounds have been reported by the present authors before. Experimental results have confirmed the existence of N→B, N→Si and N→Ti dative bonds in these compounds respectively. And the affection of different substituents and carbonyl groups in the molecular ring for these dative bonds has also been investigated and the EHMO (extended Huckel Molecular Orbital) theoretical calculation for silatrane展开更多
The central limit theorem and its invarianee principle for stationary mixing sequence were discussed previously under the condition of the existence of variances. Now we exclude this restriction.
Laser cooling and trapping of gas atoms is a new subject of study of great interest in laser spectroscopy. A suggestion is made in this paper for the cooling of gas atoms by laser radiation via the effect of frequeney...Laser cooling and trapping of gas atoms is a new subject of study of great interest in laser spectroscopy. A suggestion is made in this paper for the cooling of gas atoms by laser radiation via the effect of frequeney shift. The energy levels in an atom will shift, when the atom is irradiated by light. This phenomenon is known as 'light shift' or 'a. c. Stark effect'. Experiments show that under the illumination of laser beam, the展开更多
文摘In recent years methods of tissue culture for rapid and large-scale propagation of economic and horticultural plants have been greatly developed(1-4)The wide application of tissue culture to the production of orchid and other ornamental plants was well known[5,6].
文摘The role played by amino acids in acupuncture analgesia has not yet been well investigated. It was reported that the contents of γ-amino butyric acid (GABA) and other amino acids in the cortex and thalamus of mice changed significantly before and after electroacupuncture (EA). Using special drugs to alter the GABA contents of
文摘XPS studies on the structure of three important members of heteronitro-tricyclic compounds have been reported by the present authors before. Experimental results have confirmed the existence of N→B, N→Si and N→Ti dative bonds in these compounds respectively. And the affection of different substituents and carbonyl groups in the molecular ring for these dative bonds has also been investigated and the EHMO (extended Huckel Molecular Orbital) theoretical calculation for silatrane
文摘The central limit theorem and its invarianee principle for stationary mixing sequence were discussed previously under the condition of the existence of variances. Now we exclude this restriction.
文摘Laser cooling and trapping of gas atoms is a new subject of study of great interest in laser spectroscopy. A suggestion is made in this paper for the cooling of gas atoms by laser radiation via the effect of frequeney shift. The energy levels in an atom will shift, when the atom is irradiated by light. This phenomenon is known as 'light shift' or 'a. c. Stark effect'. Experiments show that under the illumination of laser beam, the
