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| 1 | Electrochemical probing into the active sites of graphitic-layer encapsulated iron oxygen reduction reaction electrocatalysts显示文摘The graphitic-layer encapsulated iron-containing nanoparticles(G@Fe) have been proposed as a potential type of active and stable non-precious metal electrocatalysts(NPMCs) for the oxygen reduction reaction(ORR). However, the contribution of the encapsulated components to the ORR activity is still unclear compared with the well-recognized surface coordinated FeN_x/C structure. Using the strong complexing effect of the iron component with anions, cyanide(CN^-) in alkaline and thiocyanate(SCN^-) in acidic media, the metal containing active sites are electrochemically probed. Three representative catalysts are chosen for a comparison including the as-prepared encapsulated G@Fe, commercial Fe/N/C catalyst with iron–nitrogen coordinated surface functionalities and molecular iron phthalocyanine(Fe Pc) containing well-defined structures and compositions. It was found that all samples showed significant shifts of half-wave potentials indicating that surface Fe coordinated sites in all cases. The G@Fe catalyst showed the weakest poisoning effect(the lowest shifts of half-wave potential) compared to the Fe/N/C and Fe Pc catalysts in both electrolytes. These results could be explained that the encapsulated iron components influence the FeN_x/C and/or N_xC surface functionality. | Lijie Zhong Jens Oluf Jensen Lars Nilausen Cleemann Chao Pan Qingfeng Li | 2018 | Science Bulletin2018，63，1： | 2 |
| 2 | Cooperation in an asymmetric volunteer's dilemma game with relatedness显示文摘What motivates some members of a social group to voluntarily incur costs in order to provide for the common good? This question lies at the heart of theoretical and empirical studies of cooperative behavior. This is also the question that underlies the classic volunteer's dilemma model, which has been previously explored in scenarios where group members are related or interact asym- metrically. Here we present a model that combines asymmetry and relatedness, showing that the probability of volunteerism in such systems depends closely on both the degree of asymmetry and level of relatedness between interacting individuals. As has been shown in previous volunteer's dilemma models, the payoff ratio and overall group size also influence the probability of volunteerism. The probability of volunteerism decreases with increasing group size or decreasing cost-to-benefit ratio of the coplayers; in the presence of asymmetrical interactions, subordinate players were more likely to offer public goods than the dominant player. More asymmetrical interactions decrease the probability of volunteerism of the dominant player; overall volunteerism increases with increasing relatedness. | HE JunZhou WANG RuiWu CHRISTOPHER X J Jensen LI YaoTang LI ChaoQian | 2012 | Chinese Science Bulletin2012，57，16： | 2 |
| 3 | Recanalised umbilical vein in portal hypertension显示文摘 | Aagaard J Jensen LI Christensen U | 1982 | AJR1982，139，： | 1 |
| 4 | Rapid and Flexible Prototyping Through Direct Machining显示文摘 | Wei Li Davis T Jensen G | 2004 | Computer-Aided Design and Applications2004，1，14： | 1 |
| 5 | Cyclin G recruits PP2A to dephosphorylate Mdm2显示文摘 | Okamoto K Li H Jensen MR | 2002 | Mol Cell2002，9，4： | 1 |
| 6 | An Open Device Driver Architecture for Direct Machining and Control显示文摘 | Wei Li Red E Jensen G | 2005 | Computer-Aided Design and Applications2005，2，14： | 1 |
| 7 | XPS and FTIR Investigation of the Surface Properties of Different Prepared Titania Nano-powders 显示文摘 | Jensen H Soloviev A Li Z S | 2005 | Applied Surface Science2005，246，123： | 1 |
| 8 | Synthesis, properties and biodegradation of poly(1, 3-trimethylene carbonate) 显示文摘 | Li S M Hendren R W Jensen K | 1991 | Macromolecules1991，24，8： | 1 |
| 9 | Syn- theses and Properties of a Series of Cationic Water-sol- uble Phthalocyanines 显示文摘 | LI H R JENSEN T J FRONCZEK F R | 2008 | J Med Chem2008，51，： | 1 |
| 10 | Two words to improve physician-patient communication: what else?显示文摘 | Barrier PA Li JT Jensen NM | 2003 | Mayo Clin Proc2003，78，2： | 1 |
| 11 | Effect of type and level of fibre on gastric microbial activity and short -chain fatty acid concentrations in gestating sows 显示文摘 | Wang J Li D F Jensen B | 2003 | Animal Feed Science and Technology2003，104，： | 1 |
| 12 | Energies and properties of ions involved in electrophilie halogenations : sing, let and triplet states of halogen cations ( X ^+ , X3^+ , and X4^2+ ) and hydrohalonium ions ( HX2^+ and H2X^+ ) 显示文摘 | LI Y WANG X B JENSEN F | 1990 | J Am Chem Soc1990，112，： | 1 |
| 13 | SEU tolerant memory using error correction code显示文摘 | She Xiao-xuan Li N and Jensen D W | 2012 | IEEE Transactions on Nuclear Science2012，59，1： | 1 |
| 14 | Activation of nuclear factor NF - κB and induction of inducible nitric oxide synthase by ureaplasma urealyticum in macrophages显示文摘 | Y - H Li Z - Q Yan J Skov Jensen | 2000 | Infect Immun2000，68，70： | 1 |
| 15 | Actin microdomains on endothelial cells:association with CD44,ERM proteins,and signaling molecules during quiescence and wound healing显示文摘 | Jensen PV Larsson LI | 2004 | Histochem Cell Biol2004，121，5： | 1 |
| 16 | Cyclin G recruits PP2A to dephosphorylate Mdm2 显示文摘 | Okamoto K Li H Jensen M R | 2002 | Mol Cell2002，9，7： | 1 |
| 17 | The other 87%: a report on the Second International Workshop on Indoor Spatial Awareness (San Jose, California-November 2, 2010)显示文摘 | Jensen C S Li K J Winter S | 2011 | SIGSPATIAL Special2011，3，1： | 1 |
| 18 | Negative Refractive Index in Chiral Metamaterials显示文摘 | Zhang Shuang Yong-shik park Jensen Li | 2009 | Physical Review Letters2009，101，02： | 1 |
| 19 | An improved protocol for the preparation of 3-pyridyl- and some arylboronic acids显示文摘 | LI W J NELSON D P JENSEN M S | 2000 | J Org Chem2000，65，17： | 1 |
| 20 | The other 87::a report on The Second International Workshop on Indoor Spatial Awareness 显示文摘 | Jensen C S Li K J Winter S | 2011 | SIGSPATIAL Special2011，3，1： | 1 |
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