Results 81 to 90 of about 352,111 (240)

NAD(P)H‐Dependent Dehydrogenases for the Asymmetric Reductive Amination of Ketones: Structure, Mechanism, Evolution and Application

open access: yesAdvanced Synthesis and Catalysis, 2017
Asymmetric reductive aminations are some of the most important reactions in the preparation of active pharmaceuticals, as chiral amines feature in many of the world's most important drugs.
Mahima Sharma   +3 more
semanticscholar   +1 more source

Predictive Factors for Acute and Complicated Appendicitis in Children: A Prospective Study

open access: yesJournal of Pediatric Emergency and Intensive Care Medicine
Introduction: Acute appendicitis is one of the most common surgical emergencies in children, where early diagnosis is crucial to reducing morbidity and mortality.
Esra Tepedelen Bozdağ   +6 more
doaj   +1 more source

Midwifery basics. Infant feeding: Managing baby related challenges [PDF]

open access: yes, 2013
Infant feeding: is the twelfth series of ‘Midwifery basics’ targeted at practising midwives. It aims to provide information to raise awareness of the impact of the work of midwives on women’s experience and encourage midwives to seek further information ...
Marshall, Joyce
core  

One-step synthesis of pyridines and dihydropyridines in a continuous flow microwave reactor [PDF]

open access: yes, 2013
The Bohlmann–Rahtz pyridine synthesis and the Hantzsch dihydropyridine synthesis can be carried out in a microwave flow reactor or using a conductive heating flow platform for the continuous processing of material. In the Bohlmann–Rahtz reaction, the use
Bagley, Mark C   +4 more
core   +2 more sources

Associations of body condition score, body condition score change, and hyperketonemia with mastitis, reproduction, and milk production

open access: yesJournal of Dairy Science
: Body condition score and hyperketonemia (HYK) have been associated with diseases, fertility, and culling, but data are contradictory about their association with pregnancy loss.
K.C. Krogstad, B.J. Bradford
doaj   +1 more source

High chemoselectivity in the phenol synthesis

open access: yesBeilstein Journal of Organic Chemistry, 2011
Efforts to trap early intermediates of the gold-catalyzed phenol synthesis failed. Neither inter- nor intramolecularly offered vinyl groups, ketones or alcohols were able to intercept the gold carbenoid species. This indicates that the competing steps of
Matthias Rudolph   +3 more
doaj   +1 more source

Gas-Phase Photodegradation of Decane and Methanol on TiO_2: Dynamic Surface Chemistry Characterized by Diffuse Reflectance FTIR [PDF]

open access: yes, 2008
Diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) was used to study illuminated TiO2 surfaces under both vacuum conditions, and in the presence of organic molecules (decane and methanol).
Balcerski, William   +2 more
core   +1 more source

Asymmetric microbial reduction of ketones: absolute configuration of trans-4-ethyl-1-(1S-hydroxyethyl)cyclohexanol [PDF]

open access: yes, 2009
A set of five fungal species, Botrytis cinerea, Trichoderma viride and Eutypa lata, and the endophytic fungi Colletotrichum crassipes and Xylaria sp., was used in screening for microbial biocatalysts to detect monooxygenase and alcohol dehydrogenase ...
Aleu Casatejada, Josefina   +4 more
core   +2 more sources

Rational design of a (S)-selective-transaminase for asymmetric synthesis of (1S)-1-(1,1′-biphenyl-2-yl)ethanamine [PDF]

open access: yes, 2016
Amine transaminases offer an environmentally sustainable synthesis route for the production of pure chiral amines. However, their catalytic efficiency toward bulky ketone substrates is greatly limited by steric hindrance and therefore presents a great ...
Allen, Christopher C.R.   +12 more
core   +3 more sources

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