295 resultados para anomalous Eu3 5D0->F-7(0) transition


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414pHOlsen-P0150cm10,pHOlsen-P,pHOlsen-P05cmpH>7.06.57.0,020cmpH6.0;20cmpH,,,Olsen-P>>>020cm3Olsen-P2080cm4,PP;05cmOlsen-P580cm6,P4Olsen-P80cm3Olsen-P,P,,

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,LNS(DCD)pH,Vc,,,1,U+UI+NIpHUU+UI,0.70.52pH,(P<0.01);,,17.67%17.00%,

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3 1 2CH4N2 O , . ,pHEh . ,CH4N2 O (R2 =0 0 4 94) .pHEh 0 2 46 87 7 0 2 41 5 30 0mv , 38 72 %FC 5 1 0cm .EhCH4N2 O . ,CH4N2 O 6 ( ) ,CH4N2 O .

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:DDVP,:DDVP,,DDW-1,16S-rDNA,DDW-1DDVP,:(Methylobacterium sp.),28,pH7.0,,500mgL-1DDVPDDW-13d,63.7%:DDW-1DDVP,

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2(JS4JS8),JS4JS8,JS4JS82,,,50%1%pH7.0

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This work reports on the design and performance evaluation of a miniature direct methanol fuel cell(DMFC)integrated with an electro_osmotic(EO)pump for methanol delivery.Electro-osmotic pumps require minimal parasitic power while boasting no moving parts and simple fuel cell integration.Here ,aneletro-osmotic pump is realized from a commercially available porous glass frit.We characterize a custom-fabricated DMFC with a free convection cathode and coupled to an extennal electro-osmotic pump operated at applied potentials of 4.0,7.0,and 10V.Maximum gross power density of our free convection DMFC(operated at 50)is 55 mW/cm2 using 4.0 mol/L concentration methanol solution supplied by the EO pump.Experimental results show that electro-osmotic pumps can deliver 2.0,4.0 and 8.0mol/L methanol/water mixtures to DMFCs while utilizing ~5.0% of the fuel cell power.Furthermore ,we discuss pertinent design considerations when using electro-osmotic pumps with DMFCs and areas of further study.

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3 0 7,0 8,0 9, 1 , 2 % 1% 2 % ,pH 72h

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Cumulative infiltration; Wetting front; Content of rock fragments; Size of rock fragments; ,,,7(0%,10%,20%,30%,40%,50%,60%)4(0.2~0.5cm,0.5~1.0 cm,1.0~3.0 cm,3.0~4.0 cm),,

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L i-6400;,,,,;0.7~0.8,;;,,

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:1 999 8&ldquo;&rdquo;&ldquo;&rdquo; , , ,&ldquo; ( ) , , ,&rdquo; , , , , , ? 0 .0 7 0 .1 3hm2 ? ? , 70 , , ,

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, 1982 , . , 2 0 , , 2 0 % 5 7%, 0 4 1 9 , 2 2 0 ; , 16 8%, 2 2 94%; , 2 1 . , , , , .

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13 , , 2 6 6 8 2 7 4 9kg/hm2 , 2 7 2kg/hm2 ; 5 2 1 8 4 9kg/hm2 , 7 31kg/hm2 51 9% 76 8% , 6 6 6 % ;2 3 2 % 4 8 1% , 33 4 % 13 6 % 4 7 8% ,2 8 7% ; 52 2 % 86 4 % , 71 3% , , , , 32 6 % 6 6 0 % , 51 1% ; 1 72 % 14 0 2 % , 7 0 %

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, , , ; , , , , ,&ldquo;&rdquo; , 2 5&times; 1 0 62 , 40 % , 9 3% , 7 0 % , , , , , ; , , 5 9% , , ( ,1 999; ,1 998) , : , , ; ...

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,.,161,49121,.,,143,88.82%,.,,36.02%.3.IevinsMacArthus10,,0.519 30.491 60.481 70.459 4.,,,;,.

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, , , . , , 1.2 1 2 .78 1.0 2 .7 . ,0 10AB . , .