Results 41 to 50 of about 4,068,886 (304)

UV-Induced Photodegradation of 2-Aminothiazole-4-Carboxylic Acid: Identification of New Carbodiimide Molecules

Molecules
The UV-induced photolysis of 2-aminothiazole-4-carboxylic acid (ACA), a biologically active molecule, was studied using the infrared matrix isolation method. As the first step of photolysis, a decarboxylation reaction occurred.
Daria Bumażnik, Magdalena Sałdyka
doaj   +1 more source

Upper Bounds for the Isolation Number of a Matrix over Semirings

Mathematics, 2019
Let S be an antinegative semiring. The rank of an m × n matrix B over S is the minimal integer r such that B is a product of an m × r matrix and an r × n matrix.
LeRoy B. Beasley, Seok-Zun Song
doaj   +1 more source

Deterministically Isolating a Perfect Matching in Bipartite Planar Graphs [PDF]

, 2008
We present a deterministic way of assigning small (log bit) weights to the edges of a bipartite planar graph so that the minimum weight perfect matching becomes unique. The isolation lemma as described in (Mulmuley et al.
Datta, Samir, Kulkarni, Raghav, Roy, Sambuddha   +2 more
core   +7 more sources

Modeling hepatic fibrosis in TP53 knockout iPSC‐derived human liver organoids

Molecular Oncology, EarlyView.
This study developed iPSC‐derived human liver organoids with TP53 gene knockout to model human liver fibrosis. These organoids showed elevated myofibroblast activation, early disease markers, and advanced fibrotic hallmarks. The use of profibrotic differentiation medium further amplified the fibrotic signature seen in the organoids.
Mustafa Karabicici, Soheil Akbari, Ceyda Caliskan, Canan Celiker, Ozden Oz, Leman Binokay, Gökhan Karakulah, Serif Senturk, Esra Erdal   +8 more
wiley   +1 more source

Thermochemistry and photochemistry of spiroketals derived from indan-2-one: Stepwise processes versus coarctate fragmentations

Beilstein Journal of Organic Chemistry, 2013
Coarctate reactions are defined as reactions that include atoms at which two bonds are made and two bonds are broken simultaneously. In the pursuit of the discovery of new coarctate reactions we investigate the fragmentation reactions of cyclic ketals ...
Götz Bucher, Gernot Heitmann, Rainer Herges   +2 more
doaj   +1 more source

Matrix-isolated polycarbon molecules

Journal of Molecular Structure, 1990
Abstract A brief review is given of the spectroscopic data on C2, C+2, C−2, C3, …., C10 derived from matrix isolation studies.
Department of Chemistry, University of Florida, Gainesville, FL 32611 U.S.A. ( host institution ), Weltner, W., Van Zee, R.J.   +2 more
openaire   +2 more sources

Growth factors in bone matrix. Isolation of multiple types by affinity chromatography on heparin-Sepharose.

Journal of Biological Chemistry, 1986
The mineralized matrix of osseous tissue harbors abundant mitogenic activity which is extractable by demineralizing solvents. In bovine bone powder free of blood and cartilage contamination, the volume concentration of mitogens is up to 20 times greater ...
P. Hauschka, A. Mavrakos, M. Iafrati, S. Doleman, M. Klagsbrun   +4 more
semanticscholar   +1 more source

On the verge of Umdeutung in Minnesota: Van Vleck and the correspondence principle (Part One) [PDF]

, 2006
In October 1924, the Physical Review, a relatively minor journal at the time, published a remarkable two-part paper by John H. Van Vleck, working in virtual isolation at the University of Minnesota.
A. Assmus, A. Assmus, A. Landé, A. Landé, A. Smekal, A. Sommerfeld, A. Sommerfeld, A. Sommerfeld, A. Sommerfeld, A.H. Compton, A.H. Compton, Anthony Duncan, B. Bederson, C.G. Darwin, C.G. Darwin, C.J. Davisson, C.J. Davisson, C.V. Raman, C.W. Oseen, D. Serwer, D. Ter Haar, D.C. Cassidy, D.J. Kevles, E. Zimmer, E.C. Kemble, E.M. MacKinnon, E.M. MacKinnon, E.N. Andrade, F. Hund, F. Reiche, F.C. Hoyt, F.C. Hoyt, F.C. Hoyt, F.C. Hoyt, G. Birtwistle, G. Breit, G. Breit, G. Breit, G. Breit, G. Landsberg, G.N. Cantor, H. Konno, H. Kragh, H.A. Kramers, H.A. Kramers, I.J.R. Aitchison, J. Bernstein, J. Hendry, J. Hendry, J. Ishiwara, J. Mehra, J.C. Slater, J.C. Slater, J.C. Slater, J.C. Slater, J.C. Slater, J.C. Slater, J.H. Van Vleck, J.H. Van Vleck, J.H. Van Vleck, J.H. Van Vleck, J.H. Van Vleck, J.H. Van Vleck, J.H. Van Vleck, J.H. Van Vleck, J.H. Van Vleck, J.L. Heilbron, J.S. Rigden, J.T. Cushing, J.Z. Buchwald, K. Schwarzschild, K.F. Herzfeld, K.F. Niessen, M. Beller, M. Born, M. Born, M. Born, M. Born, M. Born, M. Born, M. Dresden, M. Eckert, M. Hull, M. Jammer, M. Janssen, M.J. Klein, Michel Janssen, N. Bohr, N. Bohr, N. Bohr, N. Thorndike Greenspan, O. Darrigol, O. Darrigol, P. Forman, P. Forman, P. Robertson, P.S. Epstein, P.S. Epstein, P.S. Epstein, P.S. Epstein, P.W. Anderson, R. Becker, R. Ladenburg, R. Ladenburg, R. Ladenburg, R. Ladenburg, R. Ladenburg, R. Ladenburg, R.A. Millikan, R.H. Stuewer, R.P. Feynman, S. Coben, S.S. Schweber, S.S. Schweber, T.S. Kuhn, T.S. Kuhn, W. Bothe, W. Bothe, W. Bothe, W. Heisenberg, W. Heisenberg, W. Heisenberg, W. Heisenberg, W. Heisenberg, W. Heisenberg, W. Thomas, W. Wilson, W.F.G. Swann   +127 more
core   +8 more sources

Aggressive prostate cancer is associated with pericyte dysfunction

Molecular Oncology, EarlyView.
Tumor‐produced TGF‐β drives pericyte dysfunction in prostate cancer. This dysfunction is characterized by downregulation of some canonical pericyte markers (i.e., DES, CSPG4, and ACTA2) while maintaining the expression of others (i.e., PDGFRB, NOTCH3, and RGS5).
Anabel Martinez‐Romero, Ane Martinez‐Larrinaga, Joaquim Grego‐Bessa, Saioa Garcia‐Longarte, Hielke van Splunder, Ianire Astobiza, Amaia Ercilla, Laura Bozal‐Basterra, Isabel Mendizabal, Pilar Villacampa, Arkaitz Carracedo, Mariona Graupera   +11 more
wiley   +1 more source

J-Matrix and Isolated States

, 2008
to be published in "$J$-matrix method and its applications" (Nova Science Publishers); 14 pages, 5 ...
Shirokov, A. M., Zaytsev, S. A.
openaire   +2 more sources