Results 21 to 30 of about 86,327 (239)

Padrões de acúmulo de proteínas e carboidratos durante a embriogênese somática de Acca sellowiana [PDF]

, 2009
The aim of this work was to quantify the protein, starch and total sugars levels during histodifferentiation and development of somatic embryos of Acca sellowiana Berg.
Cangahuala-Inocente, Gabriela Claudia, Guerra, Miguel Pedro, Maldonado, Sara Beatriz, Steiner, Neusa   +3 more
core   +3 more sources

Preparation and evaluation of amido poly amine surfactant based on Melia azedarach seeds oil as corrosion inhibitor of C-steel in 2.0 M HCl pickling medium

Green Chemistry Letters and Reviews, 2017
Oil of Melia azedarach seeds (MA-oil) was extracted and modified in the form of amido poly amine surfactant (MA-amido surfactant). The surface active properties of the new MA-amido surfactant were analyzed. Corrosion inhibition of C-steel in 2.0 M HCl by
Asmaa A. I. Ali, Wagdy I. A. El-Dougdoug
doaj   +1 more source

Synthesis, Structure, and Dynamics of Tris(η5-cyclopentadienyl)lanthanides and Bis(η5-cyclopentadienyl)[bis(trimethylsilyl)amido]cerium(III) [PDF]

, 2006
The crystal structures of tris(η5-cyclopentadienyl)lanthanides (Ln = Ce, Dy, Ho) have been determined using different X-ray diffraction methods. Cp3Ce and Cp3Ho (Cp = cyclopentadienyl) crystal data needed special solution and refinement methods, due to ...
Baisch, Ulrich, Oeckler, Oliver, Pagano, Sandro, Schmedt auf der Günne, Jörn, Schnick, Wolfgang, Zeuner, Martin   +5 more
core   +1 more source

Utilização de subprodutos de arroz para obtenção de amido e xaropes de glicose

Vetor, 2007
Partindo da farinha de arroz, obteve-se amido pela solubilização das proteínas e extração num meio alcalino. O amido obtido foi utilizado como matéria-prima para a elaboração de xaropes de glicose via hidrólise ácida e enzimática.
Myriam de las Mercedes Salas-Mellado, Carlos André V. Burkert, Marta Leal Guimarães, Geovana Rocha Plácido Moore, Elisa Helena Leão Fernandes   +4 more
doaj   +4 more sources

Reactions of (-)-sparteine with alkali metal HMDS complexes : conventional meets the unconventional [PDF]

, 2009
Conventional (-)-sparteine adducts of lithium and sodium 1,1,1,3,3,3-hexamethyldisilazide (HMDS) were prepared and characterised, along with an unexpected and unconventional hydroxyl-incorporated sodium sodiate, [(-)-sparteine·Na(-HMDS)Na·(-)-sparteine]+[
Alan R. Kennedy, Byrne, Charles T. O’Hara, Collum, Doi, Driess, Engelhardt, Gehrhus, Gemma M. Robertson, Gessner, Grüning, Henderson, Hoppe, Kennedy, Kizirian, Knizek, Lucht, Lucht, Luderer, Mulvey, Mulvey, Mulvey, Natalie M. Clark, O’Brien, Pablo García-Álvarez, Power, Strohmann, Veith   +27 more
core   +1 more source

Status of national research bioethics committees in the WHO African region

BMC Medical Ethics, 2005
Background The Regional Committee for Africa of the World Health Organization (WHO) in 2001 expressed concern that some health-related studies undertaken in the Region were not subjected to any form of ethics review.
Wambebe Charles, Kirigia Joses M, Baba-Moussa Amido   +2 more
doaj   +1 more source

Expression of a barley cystatin gene in maize enhances resistance against phytophagous mites by altering their cysteine-proteases [PDF]

, 2011
Phytocystatins are inhibitors of cysteine-proteases from plants putatively involved in plant defence based on their capability of inhibit heterologous enzymes.
A Kiggundu, AH Christensen, AJ Nisbet, APO Ribeiro, B Taylor, BA Croft, C Girard, C Novillo, CJ Lilley, D Michaud, EC Oerke, F Alvarez-Alfageme, F Alvarez-Alfageme, F Ortego, Felix Ortego, G Hueros, GZ Rovenska, HRK McCafferty, HRK McCafferty, Inés Cambra, Isabel Díaz, J Fabrick, K Ramessar, KA Hamilton, Koreen Ramessar, L Oñate-Sanchez, Laura Carrillo, LB Obrist, LR Jeppson, M Castagnoli, M Martinez, M Martinez, M Martinez, M Martinez, M Pernas, M Pernas, Manuel Martinez, MM Bradford, MS Lantz, MS Nissen, MT Stubbs, P Lara, Pedro Castañera, R Gutierrez-Campos, R Konrad, R Margis, S Carbonelle, S Lalitha, Y Li, Z Abraham   +49 more
core   +2 more sources

Hydrogen Isotope Exchange in Pyridine Catalyzed by an Iron(II) Imido Complex: Counterion‐Directed Regioselectivity

Angewandte Chemie, EarlyView.
Anionic high‐spin iron(II) imido complexes are catalysts for the hydrogen isotope exchange (HIE) reaction with pyridine as the substrate. The alkali metal counter‐cation plays critical roles in activating the substrate and facilitating deuteration. These complexes catalyze site‐selective α‐, α,β,γ‐, and β,γ‐deuteration of pyridine, where the counter ...
Bin Feng, Guorong Li, Yafei Gao, Nobuyuki Yamamoto, Maren Pink, Qian Peng, Jeremy M. Smith   +6 more
wiley   +2 more sources

Strategies Toward Accessing Enantioenriched (Hetero)Benzo‐Fused 5‐ and 6‐ Membered Rings via Intermolecular Carbometalation

Angewandte Chemie, EarlyView.
The use of transition‐metal catalysts and design of chiral ligands have allowed chemists to access highly functionalized benzofused 5‐ and 6‐ membered rings in high yield and enantioselectivity. A common strategy used relies on an intermolecular carbometalation across alkynes and olefins, usually followed by a subsequent intramolecular carbometalation.
Clara Jans, Armaan Grewal, Xavier Abel‐Snape, Mark Lautens   +3 more
wiley   +2 more sources

Sites of Biosynthesis of Outer and Inner Membrane Proteins of Neurospora crassa Mitochondria [PDF]

, 1970
Outer and inner membranes of Neurospora crassa mitochondria were separated by the combined swelling, shrinking, sonication procedure. Membranes were characterized by electron microscopy and by marker enzyme activities.
Aasen A. J., Arrigoni O., Beattie D. S., Beattie D. S., Beisenherz G., Cassady W. E., Goodwin T. W., Harding R. W., Hawley E. S., Neupert W., Parsons D., Schnaitman G., Schott H.-H., Vogel H. J., Weiss H.   +14 more
core   +1 more source