Photogeneration of Hydrogen from Water by Hybrid Molybdenum Sulfide Clusters Immobilized on Titania

Two new hybrid molybdenum(IV) Mo3S7 cluster complexes derivatized with diimino ligands have been prepared by replacement of the two bromine atoms of [Mo3S7Br6]2− by a substituted bipyridine ligand to afford heteroleptic molybdenum(IV) Mo3S7Br4(diimino) complexes. Adsorption of the Mo3S7 cores from sample solutions on TiO2 was only achieved from the diimino functionalized clusters. The adsorbed Mo3S7 units were reduced on the TiO2 surface to generate an electrocatalyst that reduces the overpotential for the H2 evolution reaction by approximately 0.3 V (for 1 mA cm−2) with a turnover frequency as high as 1.4 s−1. The nature of the actual active molybdenum sulfide species has been investigated by X-ray photoelectron spectroscopy. In agreement with the electrochemical results, the modified TiO2 nanoparticles show a high photocatalytic activity for H2 production in the presence of Na2S/Na2SO3 as a sacrificial electron donor system.

Constraint qualifications in convex vector semi-infinite optimization

Convex vector (or multi-objective) semi-infinite optimization deals with the simultaneous minimization of finitely many convex scalar functions subject to infinitely many convex constraints. This paper provides characterizations of the weakly efficient, efficient and properly efficient points in terms of cones involving the data and Karush–Kuhn–Tucker conditions. The latter characterizations rely on different local and global constraint qualifications. The results in this paper generalize those obtained by the same authors on linear vector semi-infinite optimization problems.

A natureza : solo de conjunção da ética e da estética : fundamentos para a perspectivação do valor estético da natureza na acção ambiental

Tese de doutoramento, Filosofia (Filosofia da Natureza e do Ambiente), Universidade de Lisboa, Faculdade de Letras, 2016

Dynamic Precision Phenotyping Reveals Mechanism of Crop Tolerance to Root Herbivory

The western corn rootworm (WCR) is a major pest of maize that is well adapted to most crop management strategies. Breeding for tolerance is a promising alternative to combat WCR, but is currently constrained by a lack of physiological understanding and phenotyping tools. We developed dynamic precision phenotyping approaches using carbon-11 with positron emission tomography, root autoradiography and radiometabolite flux analysis to understand maize tolerance to WCR. Our results reveal that WCR attack induces specific patterns of lateral root growth which are associated with a shift in auxin biosynthesis from indole-3-pyruvic acid to indole-3-acetonitrile. WCR attack also increases transport of newly synthesized amino acids to the roots, including the accumulation of glutamine. Finally, the regrowth zones of WCR attacked roots show an increase in glutamine turnover which strongly correlates with the induction of indole-3-acetonitrile-dependent auxin biosynthesis. In summary, our findings identify local changes in the auxin flux network as a promising marker for induced WCR tolerance.

Major and trace element concentration of melt inclusions from Zhupanovsky volcano, Kamchatka

The paper presents data on naturally quenched melt inclusions in olivine (Fo 69-84) from Late Pleistocene pyroclastic rocks of Zhupanovsky volcano in the frontal zone of the Eastern Volcanic Belt of Kamchatka. The composition of the melt inclusions provides insight into the latest crystallization stages (~70% crystallization) of the parental melt (~46.4 wt % SiO2, ~2.5 wt % H2O, ~0.3 wt % S), which proceeded at decompression and started at a depth of approximately 10 km from the surface. The crystallization temperature was estimated at 1100 ± 20°C at an oxygen fugacity of deltaFMQ = 0.9-1.7. The melts evolved due to the simultaneous crystallization of olivine, plagioclase, pyroxene, chromite, and magnetite (Ol: Pl: Cpx : (Crt-Mt) ~ 13 : 54 : 24 : 4) along the tholeiite evolutionary trend and became progressively enriched in FeO, SiO2, Na2O, and K2O and depleted in MgO, CaO, and Al2O3. Melt crystallization was associated with the segregation of fluid rich in S-bearing compounds and, to a lesser extent, in H2O and Cl. The primary melt of Zhupanovsky volcano (whose composition was estimated from data on the most primitive melt inclusions) had a composition of low-Si (~45 wt % SiO2) picrobasalt (~14 wt % MgO), as is typical of parental melts in Kamchatka and other island arcs, and was different from MORB. This primary melt could be derived by ~8% melting of mantle peridotite of composition close to the MORB source, under pressures of 1.5 ± 0.2 GPa and temperatures 20-30°C lower than the solidus temperature of 'dry' peridotite (1230-1240°C). Melting was induced by the interaction of the hot peridotite with a hydrous component that was brought to the mantle from the subducted slab and was also responsible for the enrichment of the Zhupanovsky magmas in LREE, LILE, B, Cl, Th, U, and Pb. The hydrous component in the magma source of Zhupanovsky volcano was produced by the partial slab melting under water-saturated conditions at temperatures of 760-810°C and pressures of ~3.5 GPa. As the depth of the subducted slab beneath Kamchatkan volcanoes varies from 100 to 125 km, the composition of the hydrous component drastically changes from relatively low-temperature H2O-rich fluid to higher temperature H2O-bearing melt. The geothermal gradient at the surface of the slab within the depth range of 100-125 km beneath Kamchatka was estimated at 4°C/km.

Dictionary of foreign words and phrases : compiled from English sources and containing foreign words, phrases, mottos, proverbs, place names, titles, allusions and abbreviations from the Latin, Greek, French, Italian, Spanish, German, Russian, Hebrew and other foreign languages, together with English equivalents and definitions and a supplement in Greek orthography.

Mode of access: Internet.

History of Paris, Maine, from its settlement to 1880, with a history of the grants of 1736 & 1771, together with personal sketches, a copious genealogical register and an appendix.

"Genealogical registers" : p. 491-778.

"Know thyself" in Greek and Latin literature.

"List of passages in which the maxim is expressed or implied": p. [100]-104.

Dictionary of science and technology in English-French-German-Spanish,

Mode of access: Internet.

School of Nursing Class of 1987

Top Row: Douglas G. Pointon, Anne M. Laliberte, Anne T. Reaume, Karen R. Anderson, Margaret A. Mehall, Laura Meintel(Cepko), Sharon M. Milberger, Felicia I. Kle??, Pamela J. DcKeyser, Kathryn G. Maudlin, Mary C. Downey, Julie A. Gergen, Anne K. Hubling, Helen Mourao, Deborah L. Dubrul, Sarah E. Whorf

Row 2: Andrea Mitchell, Karen E. Grost, Paula V. Nersesian, Kelly A. Fleming, Mary Beth Morton, Lynda L. Cooley, Cynthia A. Wandzel, Deborah L. Bach, Karen A. Schwartz, Rhonda G. Pasma, Lesley M. Shafer, Michelle A. Kauer, Mary Jo Raftery, Carol A. Hammell, Josephine G. Ratcliffe

Row 3: Shon A. Pilarski, Julie S. Peritz, Terri L. McPherson, Tina T. chandler, Janet C. Pinkerton, Rosanna M. Knapp, Lisa A. Krukowski, Madelyn L. Nichols, Jaleh Shafii, Elizabeth A. Beer, Molly A. Finn, Dyann E. Botsford, Kathryn J. Meier, Angela L. Bruder (Crane), Herlinda Olive-Downs, Laura B. Bailey

Row 4: Laura L. Brooks, Lisa K. Feezell

Row 5: Cindy L. Harvey, Kerri A. Bacsanyi, Diane R. Cepko, Sheila E. Falk, Marylin A. Jeromin, Marianne Gerard, Sharon L. Podeszwa, Lynette A. LaPratt, Mary Ann Williams, Diana L. Faulk, Christine L. Henriksen, Sharon M. LaMacchia

Row 6: Deborah A. ranazzi (Maxim), Debra J. Mitchell, Holly B. O'Brien, Elaine K. Hebda, Jeanne L. Bruff, Crystal M. Emery, Cleola Hinton, Kathleen T. Hutton, Holly L. Nelson, Karen F. Kraker

Row 7: Meghan A. Sweeney, Christine M. Olree, Marlynn J. Marroso, Toni L. Lowery, Catherine L. Carroll, Elisabeth A. Pennington, Shake Ketefian, Rhetaugh G. Dumas, Janice B. Lindberg, Marlene Rutledge, Kimberley A. Vnuk, Anne M. Walsh, Rae Ann Vander Weide, Cheryl L. Boyd

Row 8: Renee M. Marks, Janine M. Simon, Renee A. Bowles, Linda Kurpinski-Nabozny, Teresa E. Ohman, Joanna E. Bok, Jodi F. Siegel, Janeen M. Chebli, Susan M. Williamson, Mary M. Fedewa, Rose Marie Stacey, Angela J. DeWitt, Kim E. Whelan, Lyndall P. Miller

Row 9: Jean M. Dziurgot, Amy J. Elwart, Lorrie A. Sheck, Amy A. Plasman, Mary L. Schuette, Susan K. Bowen, Heather A. Woodward, Luann N. Richert, Laurie J. Schlukebir, Linda L. Stevenson(Said), Carolyn N. Hartke, Rebecca L. Evans, Kathryn A. Savage, Kathryn A. Sailus (Linden), Heidi Deininger, Jennifer J. Eppley

School of Nursing Class of 1991

Top Row: Lisa A. Anton, Karen M. Banish, Sherry L. Bendele, Lori Bishop, Rossana Biundo, Jennifer Brooks, Stefanie J. Brown, Kimberly J. Coleman, Christine M. Decker, Mary Jo Diebold, Molly Donohue, Mary C. Dubois, Meggan C. Ebert

Row 2: Michelle Fox, Ann Marie Gergely, Nina N. Giglio, Stephen Gniewek, Jennifer K. Gollon, Laura E. Gregorius, Shiree A. Hamilton, Corinne R. Hardecki, Yoline M. Hargrave, Raina C. Hartitz, Dana M. Hocking, Andrea E. Jarrett

Row 3: Nancy Johnson, Harjot Kaur, Doreen M. Kinney, Kristine Boyle, Michele Phillips, Anthony Stewart, Pamela Blumson, Lisa Rudin, Lisa Eby, Christina Koehlmann, Julie A. Kolar, Shelly M. Kraiza

Row 4: Cindy Kvarnberg, Beth Anne Lannan, Martha Lasley, James A. Lowery

Row 5: Eileen M. Lucier, Anne Marie Lutostanski, Crystal Tchoryk, Kathy Kline, Donna L. Marshall, Mary C. Maxim

Row 6: Melinda J. Mc Calla, Carolyn Mclean, Molly B. Meyersohn, Christine L. Nersesian, Ann-Marie Nosotti

Row 7: Darlene D. Osemlak, Francine D. Paglia, Danee L. Paullin, Shake Ketefian, Janice B. Lindberg, Rhetaugh G. Dumas, Violet Barkauskas, Beverly Jones, Elisabeth Pennington, Jill L. Pierpont, Marie E. Rosenburg, Rebecca L. Rotole

Row 8: Carla D. Rouse, Merilynne H. Rush, Bernadette Michelle Santos, Stephanie A. Schaltz, Colleen M. Seastrom, Anita M. Shedlock, Judith A. Skonieczny, Alice Skumautz, Nancy A. Standler, Kristine Stoetzer, Annaflor O. Suan, Lynn E. Taylo

Row 9: Renee M. Thibodeau, Kirsten M. Thornquist, Lisa A. Treash, Lisa Marie Warriner, Miriam Beth Weiner, Teresa Wen, Martha Hill Wenzler, Melissa K. White, Denise M. Williams, Christina L. Wroubel, Jamie K. Yeulett, Sarah Jo York, Jennifer Zolinski

2001 Women's Rowing Team, U-M Rowing

Front Row: Tamara McBratney, Danielle Scaglione, Helen Dalis, Fazeela Siddiqui, Cori Cunningham, Carissa Bragg, Student Manager Lisa Durham

Second Row: Petra Juzwishin, Brooke Goodwin, Kate Maxim, Justin Goble, Alison Hickey, Rachel Brunelle, Julie Brescoll, Caroline Gregory

Third Row: Hannah Fenster, Heather Mandoli, Katie Reynolds, Liz Glenn, Sophie Roberge, Erin Kopicki, Emy Bury, Liz Nelson

Fourth Row: Pam Reid, Kristin Rosella, Kristine Johns, Elizabeth Kreger, Laurel Donnell-Fink, Angela Bierhuizen, Bernadette Marten, Sera Coppolino

Top Row (L-R): Jenny Bryant, Christina Ceo, Amy Anstandig, Christina Meyer, Kate Johnson, Emily Goodwin, Melanie Duncan

Self-assembly of trehalose molecules on a lysozyme surface: the broken glass hypothesis

To help understand how sugar interactions with proteins stabilise biomolecular structures, we compare the three main hypotheses for the phenomenon with the results of long molecular dynamics simulations on lysozyme in aqueous trehalose solution (0.75 M). We show that the water replacement and water entrapment hypotheses need not be mutually exclusive, because the trehalose molecules assemble in distinctive clusters on the surface of the protein. The flexibility of the protein backbone is reduced under the sugar patches supporting earlier findings that link reduced flexibility of the protein with its higher stability. The results explain the apparent contradiction between different experimental and theoretical results for trehalose effects on proteins.

Near-ML detection for MDL-impaired few-mode fiber transmission

Few-mode fiber transmission systems are typically impaired by mode-dependent loss (MDL). In an MDL-impaired link, maximum-likelihood (ML) detection yields a significant advantage in system performance compared to linear equalizers, such as zero-forcing and minimum-mean square error equalizers. However, the computational effort of the ML detection increases exponentially with the number of modes and the cardinality of the constellation. We present two methods that allow for near-ML performance without being afflicted with the enormous computational complexity of ML detection: improved reduced-search ML detection and sphere decoding. Both algorithms are tested regarding their performance and computational complexity in simulations of three and six spatial modes with QPSK and 16QAM constellations.

Mode-division-multiplexed 3x112-Gb/s DP-QPSK transmission over 80 km few-mode fiber with inline MM-EDFA and blind DSP

We show transmission of a 3x112-Gb/s DP-QPSK mode-division-multiplexed signal up to 80km, with and without multi-mode EDFA, using blind 6x6 MIMO digital signal processing. We show that the OSNR-penalty induced by mode-mixing in the multi-mode EDFA is negligible.