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排序方式: 共有403条查询结果,搜索用时 171 毫秒
51.
52.
Takayuki Tomaru Shinji Miyoki Masatake Ohashi Kazuaki Kuroda Takashi Uchiyama Toshikazu Suzuki Akira Yamamoto Takakazu Shintomi Akitoshi Ueda Daisuke Tatsumi Shuichi Sato Koji Arai Masaki Ando Koji Watanabe Kenji Nakamura Masahiko Watanabe Kazuhiko Ito Izumi Kataoka Hiroaki Yamamoto Brett Bochner Yaron Hefetz 《Applied optics》2003,42(7):1306-1307
53.
54.
The discharge and charge characteristics of γ-FeOOH products prepared from the intercalation compound of FeOC1 and 4-aminopyridine were investigated in lithium cells and compared with those of FeOOH prepared from the intercalation compound of FeOC1 and aniline (a-FeOOH(AN)). The polarization of γ-FeOOH cathode during the discharge and charge were larger than those of an a-FeOOH(AN) cathode. The electrochemical characteristics of the FeOOH products depend on the amorphous nature of the cathode material. 相似文献
55.
56.
Watanabe H. Tatsumi T. Ohnishi S. Kitajima H. Honma I. Ikarashi T. Ono H. 《Electron Devices, IEEE Transactions on》1995,42(7):1247-1254
The cylindrical capacitor structure with hemispherical grained-Si (HSG-Si) described here reliably achieves a cell capacitance of 30 fF in a 0.4 μm-high storage electrode with a cell area of a 0.72 μm2 for 256 Mbit dynamic random access memory. An HSG-Si formation technology using Si2H6-molecule irradiation and annealing enables control of the grain density and grain size of HSG-Si fabricated selectively on the whole surface of phosphorus-doped amorphous Si cylindrical electrodes 相似文献
57.
58.
Tomohito Hamazaki Masaharu Urakaze Masahiro Makuta Akio Ozawa Yasuji Soda Hiroshi Tatsumi Saburo Yano Akira Kumagai 《Lipids》1987,22(12):994-998
The ethyl ester of eicosapentaenoic acid (EPA) is the only pure EPA-containing lipid available in bulk for oral administration.
However, there is doubt as to whether EPA ethyl ester can efficiently increase the plasma levels of EPA in comparison with
the ability of other kinds of EPA-containing lipids to do so. Therefore, two other kinds of EPA-containing lipids were prepared
to study the efficiency of oral administration of those lipids for increasing the EPA content in plasma phospholipids and
cholesteryl esters. EPA-containing lipids which were investigated were [A], 1,2,3-trieicosapentaenoyl-glycerol, [B] 2-eicosapentaenoyl-phosphatidylcholine
and [C] ethyl ester of EPA. An adjusted amount of lipids [A], [B] and [C] was administered to rats through a gastric tube
for 4 days (the first experiment) or for 10 days (the second experiment), and the fatty acid composition of plasma phospholipids
and cholesteryl esters was determined. In the first experiment, there were no significant differences in the efficiency for
increasing EPA levels in either phospholipids or cholesteryl esters among the lipids. In the second experiment, the EPA levels
of both plasma phospholipids and cholesteryl esters of rats administered ethyl ester of EPA were significantly higher than
those of rats administered 2-eicosapentaenoyl-phosphatidylcholine. The EPA levels of the rats administered 1,2,3-trieicosapentaenoylglycerol
were between the levels of the two groups mentioned above, but the differences in the EPA levels were not significant. Although
an ethyl ester-type molecule is not a naturally occurring lipid, ethyl ester of EPA is equal to 1,2,3-trieicosapentaenoyl-glycerol
and appears to be superior to 2-eicosapentaenoyl-phosphatidylcholine as to the efficiency for increasing EPA levels in total
plasma phospholipids and plasma cholesteryl esters. 相似文献
59.
60.
N-tert-Butylmaleimide (tBMI) polymerized readily in the presence of a radical initiator in spite of its bulky N-substituent to give a high molecular weight and less-flexible poly(substituted methylene). From kinetic investigation for the polymerization of tBMI with 2,2-azobisisobutyronitrile (AIBN) in benzene, it was revealed that the rate of polymerization (R
p) was expressed as R
p=k [AIBN]0.51[tBMI]1.4, and the overall activation energy was 99.6 kJ/mol. The high polymerization of tBMI was assumed to result from the decrease in the rate of bimolecular termination between rigid polymer radicals bearing a bulky substituent. The flexibility of the polymer chain was examined by the viscometric and light scattering methods, and the effect on the polymerization reactivity was discussed. 相似文献