Results 51 to 60 of about 88,515 (283)

Status of national research bioethics committees in the WHO African region

open access: yesBMC 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   +2 more
doaj   +1 more source

Integrating Visible‐Light Photocatalysis and Enzymes for the Stereoselective Synthesis of Alcohols and Amines

open access: yesAdvanced Synthesis &Catalysis, EarlyView.
The integration between visible‐light photocatalysis and biocatalysis has the potential to greatly improve modern organic synthesis by combining the production of valuable synthetic intermediates under mild photochemical conditions with the high degree of stereoselectivity reached by enzymes. The review collects the recent efforts in the photoenzymatic
Stefano Parisotto, Cristina Prandi
wiley   +1 more source

Digestibilidade aparente de dietas contendo diferentes níveis de amido para coelhos em crescimento Apparent digestibility of diets with different starch levels for growing rabbits

open access: yesRevista Brasileira de Zootecnia, 2000
Com o objetivo de avaliar a influência do amido dietético sobre a digestibilidade aparente dos nutrientes, para coelhos em fase de crescimento, quatro dietas experimentais foram elaboradas de forma a conter níveis crescentes de amido de milho (23, 28, 33
Alex Martins Varela de Arruda   +2 more
doaj   +1 more source

Colonic Submucosa Targeted Delivery of Probiotic and Rhein for Ulcerative Colitis Treatment

open access: yesAdvanced Science, EarlyView.
A novel orally drug‐probiotic co‐delivery system designated as Rh‐YBS for UC treatment, which highlights three innovations: (i) YPs involves colonic submucosa delivery via M cells; (ii) Rh (drug) promotes the colonization and growth of BS (probiotic) in the colon.
Lingqiang Li   +21 more
wiley   +1 more source

Bactericidal activity of extended 9-glycyl-amido-minocyclines [PDF]

open access: yes, 2007
The need for self-protecting polymer or alloy implants resistant to a broad spectrum of bacterial challenges led us to investigate covalent bonding of minocycline (MIN), a tetracycline derivative, to polystyrene beads and to titanium alloy foils by ...
Chen, Chang-po   +2 more
core   +2 more sources

Rational Molecular Engineering of Amidonaphthoquinone Cathodes: Precise Hydrogen Bond and Size Control for High‐Performance Lithium Organic Batteries

open access: yesAdvanced Science, EarlyView.
This work provides a novel molecular design strategy to develop three naphthoquinone‐derived cathodes (NQ1, NQ2, and NQ3) by linking one, two, and three amido‐naphthoquinone redox centers onto a benzene ring in a convenient way. Structure evolution to increased hydrogenbonds and molecular size enables high performance LOBs by joint solubility suppress ...
Qianglong Chen   +4 more
wiley   +1 more source

New amido- and imido-titanium complexes [PDF]

open access: yesJournal of the Chemical Society, Chemical Communications, 1983
cpTiCl3 (cp = η5-C5H5) in reaction with Me3SiN(H)R (R = Et, Pri, But, or Ph) yields the amido complexes cpTi(Cl)2N(H)R, which react further by HCl abstraction to give the corresponding centrosymmetric binuclear imido complexes [cp(Cl)Ti]2(μ-RN)2; substitution of the chloride ligands by organic groups is possible with the imido complexes, as is ...
Jan H. Teuben   +3 more
openaire   +3 more sources

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

open access: yes, 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.   +14 more
core   +1 more source

Endogenously Triggered DNAzyme‐Based Nanostructures for Gene‐Combined Therapy

open access: yesAdvanced NanoBiomed Research, EarlyView.
DNAzymes show great promise for gene regulation and therapeutic use via controlled release triggered by endogenous factors. This review summarizes recent advances in designing and constructing nanoscale platforms enabling endogenously triggered release of DNAzyme.
Theoneste Muyizere   +4 more
wiley   +1 more source

Group VIII Coordination Chemistry of a Pincer-Type Bis(8-quinolinyl)amido Ligand [PDF]

open access: yes, 2008
This paper provides an entry point to the coordination chemistry of the group VIII chemistry of the bis(8-quinolinyl)amine (BQA) ligand. In this context, mono- and disubstituted BQA complexes of iron, ruthenium, and osmium are described. For example, the
Betley, Theodore A.   +2 more
core  

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