AgEcon Search is a free,open access repository of full - text scholarly literature in agricultural and applied economics,inclu-ding working papers,conference papers,and journal articles. AgEcon Search
In our previous work~[1],we have studied photoluminescence(PL)from 5.0×10^(17) C-ions/cm^2 doped SiO_2 films after 335 and 855 MeV^(40)Ar or 1.98 GeV^(84)Kr ion irradiations.It was found that PL bands centred at...In our previous work~[1],we have studied photoluminescence(PL)from 5.0×10^(17) C-ions/cm^2 doped SiO_2 films after 335 and 855 MeV^(40)Ar or 1.98 GeV^(84)Kr ion irradiations.It was found that PL bands centred at～430nm and～380 nm were formed in the C-doped SiO_2 films and the PL intensity decreases with electronic energy loss S_e increasing.In the present work,we studied the PL properties of C-doped SiO_2 films after 1.75 GeV Xe and 2.71 GeV U ion irradiations.展开更多
In this country, lots of people like to take photographs.We can see photographs bulging from wallets andalbums; fall from drawers and closets; clutter up desktops and wall space; fill countless frames and slideproject...In this country, lots of people like to take photographs.We can see photographs bulging from wallets andalbums; fall from drawers and closets; clutter up desktops and wall space; fill countless frames and slideprojectors. Most of them are visual records of ourfamilies extending back through generations and inclu-展开更多
Deutsche Gesellschaft für Schlafforschung und Schlafmedizin（DGSM）German Sleep Society Current President：Prof.Dr.Geert Mayer Foundation year：1992Webpage：http：//www.dgsm.de Number of members：2,240Composition...Deutsche Gesellschaft für Schlafforschung und Schlafmedizin（DGSM）German Sleep Society Current President：Prof.Dr.Geert Mayer Foundation year：1992Webpage：http：//www.dgsm.de Number of members：2,240Composition of members（degree,specialties,subspecialties,etc.）：展开更多
The Second Conference of Chinese So-ciety of Rare Earths(2nd CCSR)was heldfrom 4 to 7 of November,1990 in Beijing.300 Chinese scholars from universities,research institutions and factories at-tended the meeting.There ...The Second Conference of Chinese So-ciety of Rare Earths(2nd CCSR)was heldfrom 4 to 7 of November,1990 in Beijing.300 Chinese scholars from universities,research institutions and factories at-tended the meeting.There were 17 invited lectures pre-sented during the plenary session inclu-ding“15 Year’s Development of CascadeExtraction Theory”by Prof.Xu Guang Xianand Li Biaoguo of Beijing University,“RE Bioinorganic Chemistry”by Prof.NiJiazan of Changchun Institute of AppliedChemistry,and“Some Considerations onRE Applied Chemistry in Steels”by Prof.展开更多
文摘AgEcon Search is a free,open access repository of full - text scholarly literature in agricultural and applied economics,inclu-ding working papers,conference papers,and journal articles. AgEcon Search
文摘In our previous work~[1],we have studied photoluminescence(PL)from 5.0×10^(17) C-ions/cm^2 doped SiO_2 films after 335 and 855 MeV^(40)Ar or 1.98 GeV^(84)Kr ion irradiations.It was found that PL bands centred at～430nm and～380 nm were formed in the C-doped SiO_2 films and the PL intensity decreases with electronic energy loss S_e increasing.In the present work,we studied the PL properties of C-doped SiO_2 films after 1.75 GeV Xe and 2.71 GeV U ion irradiations.
文摘In this country, lots of people like to take photographs.We can see photographs bulging from wallets andalbums; fall from drawers and closets; clutter up desktops and wall space; fill countless frames and slideprojectors. Most of them are visual records of ourfamilies extending back through generations and inclu-
文摘Deutsche Gesellschaft für Schlafforschung und Schlafmedizin（DGSM）German Sleep Society Current President：Prof.Dr.Geert Mayer Foundation year：1992Webpage：http：//www.dgsm.de Number of members：2,240Composition of members（degree,specialties,subspecialties,etc.）：
文摘The Second Conference of Chinese So-ciety of Rare Earths(2nd CCSR)was heldfrom 4 to 7 of November,1990 in Beijing.300 Chinese scholars from universities,research institutions and factories at-tended the meeting.There were 17 invited lectures pre-sented during the plenary session inclu-ding“15 Year’s Development of CascadeExtraction Theory”by Prof.Xu Guang Xianand Li Biaoguo of Beijing University,“RE Bioinorganic Chemistry”by Prof.NiJiazan of Changchun Institute of AppliedChemistry,and“Some Considerations onRE Applied Chemistry in Steels”by Prof.
