Zobrazeno 1 - 7
of 7
pro vyhledávání: '"李政远"'
Publikováno v:
Journal of Ordnance Equipment Engineering; 2023, Vol. 44 Issue 6, p79-85, 7p
Autor:
Cheng-Yuan Lee, 李政遠
102
Treatment of propargyl alcohol 1 with [Ru]-Cl ([Ru] = CpRu(PPh3)2) in the presence of KPF6 and K2CO3 in CH2Cl2 affords the acetylide complex 2. The dehydration takes place at CδH and CγOH, instead of at CβH and CγOH. Then, protonation of
Treatment of propargyl alcohol 1 with [Ru]-Cl ([Ru] = CpRu(PPh3)2) in the presence of KPF6 and K2CO3 in CH2Cl2 affords the acetylide complex 2. The dehydration takes place at CδH and CγOH, instead of at CβH and CγOH. Then, protonation of
Externí odkaz:
http://ndltd.ncl.edu.tw/handle/42493515602085804707
Autor:
Cheng-Yuan Lee, 李政遠
97
In recent years, because the demand for mobile communication service has increased rapidly,the existing fixed frequency spectrum distribution policy is not appropriate anymore. According to the U.S. FCC survey report [FCC03], the spectrum uti
In recent years, because the demand for mobile communication service has increased rapidly,the existing fixed frequency spectrum distribution policy is not appropriate anymore. According to the U.S. FCC survey report [FCC03], the spectrum uti
Externí odkaz:
http://ndltd.ncl.edu.tw/handle/90955500783601189326
Autor:
Cheng-Yuan Li, 李政遠
94
In the past 5 years, countries of Southeast Asia and Mainland China with huge cheap labor force; vast natural and land resources, keep on reducing tremendously on the production costs of standardized massive products like polyester fiber. Esp
In the past 5 years, countries of Southeast Asia and Mainland China with huge cheap labor force; vast natural and land resources, keep on reducing tremendously on the production costs of standardized massive products like polyester fiber. Esp
Externí odkaz:
http://ndltd.ncl.edu.tw/handle/16471110772586192898
Autor:
Jeng-Yeuan Lee, 李政遠
91
The vehicle industry development has been thirty to forty years in Taiwan. With long-term corporation and technique transferring from parent factories, manufacturers’ ability in research design and production manufacturing has been mature.
The vehicle industry development has been thirty to forty years in Taiwan. With long-term corporation and technique transferring from parent factories, manufacturers’ ability in research design and production manufacturing has been mature.
Externí odkaz:
http://ndltd.ncl.edu.tw/handle/88239141688220889454
Autor:
Jeng-Yeuan Lee, 李政遠
91
The vehicle industry development has been thirty to forty years in Taiwan. With long-term corporation and technique transferring from parent factories, manufacturers’ ability in research design and production manufacturing has been mature.
The vehicle industry development has been thirty to forty years in Taiwan. With long-term corporation and technique transferring from parent factories, manufacturers’ ability in research design and production manufacturing has been mature.
Externí odkaz:
http://ndltd.ncl.edu.tw/handle/80933259847555745166