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Kim, Chunjoong,Adil, Abdullah A.,Bayliss, Ryan D.,Kinnibrugh, Tiffany L.,Lapidus, Saul H.,Nolis, Gene M.,Freeland, John W.,Phillips, Patrick J.,Yi, Tanghong,Yoo, Hyun Deog,Kwon, Bob Jin,Yu, Young-Sang American Chemical Society 2018 Chemistry of materials Vol.30 No.5
<P>Oxides undergoing reversible electrochemical cycling of Mg<SUP>2+</SUP> ions would enable novel battery concepts beyond Li<SUP>+</SUP>, capable of storing large amounts of energy. However, materials showing this chemical reactivity are scarce. Suitable candidates require small particles to shorten transport lengths, together with chemically complex structures that promote cation mobility, such as spinel. These goals pose a challenge for materials chemists. Here, nanocrystals of spinel-type Mg<SUB>0.5</SUB>Mn<SUB>2.5</SUB>O<SUB>4</SUB> were prepared using colloidal synthesis, and their electrochemical activity is presented. Cycling in an aqueous Mg<SUP>2+</SUP> electrolyte led to a reversible transformation between a reduced spinel and an oxidized layered framework. This reaction involves large amounts of capacity because of the full oxidation to Mn<SUP>4+</SUP>, through the extraction of both Mg<SUP>2+</SUP> and, in the first cycle, Mn<SUP>2+</SUP> ions. Re-formation of the spinel upon reduction resulted in enrichment with Mg<SUP>2+</SUP>, indicating that its insertion is more favorable than that of Mn<SUP>2+</SUP>. Incorporation of water into the structure was not indispensable for the transformation, as revealed by experiments in non-aqueous electrolytes and infrared spectroscopy. The findings open the door for the use of similar nanocrystals in Mg batteries provided that electrolytes with suitable anodic stability are discovered, thereby identifying novel routes toward electrode materials for batteries with high energy.</P> [FIG OMISSION]</BR>
Nolis, Gene M.,Adil, Abdullah,Yoo, Hyun Deog,Hu, Linhua,Bayliss, Ryan D.,Lapidus, Saul H.,Berkland, Lisa,Phillips, Patrick J.,Freeland, John W.,Kim, Chunjoong,Klie, Robert F.,Cabana, Jordi American Chemical Society 2018 The Journal of Physical Chemistry Part C Vol.122 No.8
<P>In this report, the feasibility of reversible Ca<SUP>2+</SUP> or Zn<SUP>2+</SUP> intercalation into a crystalline cubic spinel Mn<SUB>2</SUB>O<SUB>4</SUB> cathode has been investigated using electrochemical methods in an aqueous electrolyte. A combination of synchrotron XRD and XANES studies identified the partial structural transformation from a cubic to a tetragonally distorted spinel Mn<SUB>3</SUB>O<SUB>4</SUB>, accompanied by the reduction of Mn<SUP>4+</SUP> to Mn<SUP>3+</SUP> and Mn<SUP>2+</SUP> during discharge. TEM/EDX measurements confirmed that practically no Ca<SUP>2+</SUP> was inserted upon discharge. However, non-negligible amounts of Zn were detected after Mn<SUB>2</SUB>O<SUB>4</SUB> was reduced in the Zn<SUP>2+</SUP> electrolyte, but through the formation of secondary phases that, in some cases, appeared adjacent to the surface of a cathode particle. This report aims to identify bottlenecks in the application of manganese oxide cathodes paired with Ca or Zn metal anodes and to justify future efforts in designing prototype multivalent batteries.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jpccck/2018/jpccck.2018.122.issue-8/acs.jpcc.7b12084/production/images/medium/jp-2017-12084c_0006.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/jp7b12084'>ACS Electronic Supporting Info</A></P>
Baryon content of massive galaxy clusters at 0.57 < <i>z</i> < 1.33
Chiu, I.,Mohr, J.,McDonald, M.,Bocquet, S.,Ashby, M. L. N.,Bayliss, M.,Benson, B. A.,Bleem, L. E.,Brodwin, M.,Desai, S.,Dietrich, J. P.,Forman, W. R.,Gangkofner, C.,Gonzalez, A. H.,Hennig, C.,Liu, J. Oxford University Press 2016 MONTHLY NOTICES- ROYAL ASTRONOMICAL SOCIETY Vol.455 No.1
First particle-by-particle measurement of emittance in the Muon Ionization Cooling Experiment
Adams, D.,Adey, D.,Asfandiyarov, R.,Barber, G.,de Bari, A.,Bayes, R.,Bayliss, V.,Bertoni, R.,Blackmore, V.,Blondel, A.,Boehm, J.,Bogomilov, M.,Bonesini, M.,Booth, C. N.,Bowring, D.,Boyd, S.,Bradshaw, Springer-Verlag 2019 The European physical journal. C, Particles and fi Vol.79 No.3
Woo, C.G.,Seo, S.,Kim, S.W.,Jang, S.J.,Park, K.S.,Song, J.Y.,Lee, B.,Richards, M.W.,Bayliss, R.,Lee, D.H.,Choi, J. Elsevier 2017 Annals of Oncology Vol.28 No.4
<P>Conclusion: Our findings show that group EML4-ALK variants 3a/b may be a major source of ALK inhibitor resistance in the clinic. The variant-specific genotype of the EML4-ALK fusion allows for more precise stratification of patients with advanced NSCLC.</P>
GALAXY CLUSTERS DISCOVERED VIA THE SUNYAEV-ZEL'DOVICH EFFECT IN THE 2500-SQUARE-DEGREE SPT-SZ SURVEY
Bleem, L. E.,Stalder, B.,de Haan, T.,Aird, K. A.,Allen, S. W.,Applegate, D. E.,Ashby, M. L. N.,Bautz, M.,Bayliss, M.,Benson, B. A.,Bocquet, S.,Brodwin, M.,Carlstrom, J. E.,Chang, C. L.,Chiu, I.,Cho, H IOP Publishing 2015 The Astrophysical journal Supplement series Vol.216 No.2
<P>We present a catalog of galaxy clusters selected via their Sunyaev-Zel'dovich (SZ) effect signature from 2500 deg(2) of South Pole Telescope (SPT) data. This work represents the complete sample of clusters detected at high significance in the 2500 deg(2) SPT-SZ survey, which was completed in 2011. A total of 677 (409) cluster candidates are identified above a signal-to-noise threshold of xi = 4.5 (5.0). Ground-and space-based optical and near-infrared (NIR) imaging confirms overdensities of similarly colored galaxies in the direction of 516 (or 76%) of the xi > 4.5 candidates and 387 (or 95%) of the xi > 5 candidates; the measured purity is consistent with expectations from simulations. Of these confirmed clusters, 415 were first identified in SPT data, including 251 new discoveries reported in this work. We estimate photometric redshifts for all candidates with identified optical and/or NIR counterparts; we additionally report redshifts derived from spectroscopic observations for 141 of these systems. The mass threshold of the catalog is roughly independent of redshift above z similar to 0.25 leading to a sample of massive clusters that extends to high redshift. The median mass of the sample is M-500c(rho(crit)) similar to 3.5 x 10(14) M-circle dot h(70)(-1) 70, the median redshift is z(med) = 0.55, and the highest-redshift systems are at z > 1.4. The combination of large redshift extent, clean selection, and high typical mass makes this cluster sample of particular interest for cosmological analyses and studies of cluster formation and evolution.</P>