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Showing 13 to 24 of 176 entries
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Amplification of chirality in helical supramolecular polymers beyond the long-chain limit.

The Journal of chemical physics

van Gestel J, van der Schoot P, Michels MA.
PMID: 15267745
J Chem Phys. 2004 May 01;120(17):8253-61. doi: 10.1063/1.1689645.

The optical activity of helical homopolymers devoid of chiral centers increases drastically when a small amount of homochiral monomers is incorporated into them. We study this so-called sergeants-and-soldiers effect of chirality amplification in solutions of helical supramolecular polymers with...

Prenatal smoke exposure and mammographic density in mid-life.

Journal of developmental origins of health and disease

Terry MB, Schaefer CA, Flom JD, Wei Y, Tehranifar P, Liao Y, Buka S, Michels KB.
PMID: 23378890
J Dev Orig Health Dis. 2011 Dec;2(6):340-52. doi: 10.1017/S2040174411000614.

Tobacco smoke has both carcinogenic effects and anti-estrogenic properties and its inconsistent association with breast cancer risk in observational studies may be because of these competing effects across the lifecourse. We conducted a prospective study of prenatal smoke exposure,...

Detectors for the extreme ultraviolet. I: photomultipliers used in the dc output current mode.

Applied optics

Michels DJ, Hunter WR.
PMID: 20057763
Appl Opt. 1967 Mar 01;6(3):385-90. doi: 10.1364/AO.6.000385.

An investigation has been made of voltage-sensitivity characteristics, absolute spectral response, dark current and output current limitations of seven photomultipliers suitable for detection of extreme uv radiation. These photomultipliers are windowless types, utilizing cathode surfaces blind to visible and...

Glucosamine-resistant mutations in yeast affecting the glucose repression sensitivity of electron transport enzymes.

Current genetics

Mishra SD, Michels CA.
PMID: 24186547
Curr Genet. 1982 Dec;6(3):209-17. doi: 10.1007/BF00390340.

We have isolated two mutant strains, GSA(r)-4 and GSA(r)-5, which are able to grow on lactate in the presence of D-glucosamine. The glucosamine-resistant phenotype results from the cooperative effects of mutations in three loci, GAR1, GAR2 and GAR3. Both...

Structure, energetics, and reactions of alkali tetramers.

The Journal of chemical physics

Byrd JN, Michels HH, Montgomery JA, Côté R, Stwalley WC.
PMID: 22239780
J Chem Phys. 2012 Jan 07;136(1):014306. doi: 10.1063/1.3672646.

Electronic structure calculations have been carried out for all possible alkali tetramers that can be formed from X(2) + X(2) → X(2)X(2), X(2) + Y(2) → X(2)Y(2), and XY + XY → X(2)Y(2) alkali dimer association reactions. Vibrationally stable...

Influence of light on the confinement potential of GaAs/AlxGa1-xAs heterojunctions.

Physical review. B, Condensed matter

Foxon CT, Harris JJ, Michels JG, Nicholas RJ, Summers GM, Symons DM.
PMID: 9981338
Phys Rev B Condens Matter. 1995 Jul 15;52(4):2688-2696. doi: 10.1103/physrevb.52.2688.

No abstract available.

Cyclotron resonance and spin states in GaAs/Ga1-xAlxAs heterojunctions: Experiment and theory.

Physical review. B, Condensed matter

Daly MS, Foxon CT, Gee P, Harris JJ, Hill S, Michels JG, Nicholas RJ, Singleton J, Summers GM, Warburton RJ.
PMID: 9985297
Phys Rev B Condens Matter. 1996 Nov 15;54(19):13807-13815. doi: 10.1103/physrevb.54.13807.

No abstract available.

Sleep and survival among women with breast cancer: 30 years of follow-up within the Nurses' Health Study.

British journal of cancer

Trudel-Fitzgerald C, Zhou ES, Poole EM, Zhang X, Michels KB, Eliassen AH, Chen WY, Holmes MD, Tworoger SS, Schernhammer ES.
PMID: 29315290
Br J Cancer. 2018 Mar 20;118(6):e6. doi: 10.1038/bjc.2017.437. Epub 2018 Jan 09.

This corrects the article DOI: 10.1038/bjc.2017.85.

Data on mineral composition, fatty acids, oxidative stability, UV-VIS spectra and fluorescence emission of the Dersani® and Sunflower® oils used as a cicatrizing agent.

Data in brief

de Oliveira JB, Michels FS, Silva de Pádua Melo E, Nazário CED, Caires ARL, Gonçalves DA, Cardoso CAL, Aragão do Nascimento V.
PMID: 31516950
Data Brief. 2019 Aug 22;26:104427. doi: 10.1016/j.dib.2019.104427. eCollection 2019 Oct.

Dersani® and sunflower® oils are used by the Brazilian population as a cicatrizing agent. However, data on physical and chemical properties of these oils are scarce. In this data article on oils, we determined a total of 14 fatty...

Exploring Disordered Morphologies of Blends and Block Copolymers for Light-Emitting Diodes with Mesoscopic Simulations.

Macromolecules

Zhang J, Kremer K, Michels JJ, Daoulas KC.
PMID: 32655190
Macromolecules. 2020 Jan 28;53(2):523-538. doi: 10.1021/acs.macromol.9b02402. Epub 2020 Jan 14.

Recently, disordered blends of semiconducting and insulating polymers have been used to prepare light-emitting diodes with increased luminous efficiency. Because the thermodynamic stability of the disordered phase in blends is limited, equivalent diblock copolymers (BCPs) could be an alternative....

Small Airway Disease in Pulmonary Hypertension-Additional Diagnostic Value of Multiple Breath Washout and Impulse Oscillometry.

Journal of clinical medicine

Trinkmann F, Gawlitza J, Künstler M, Schäfer J, Schroeter M, Michels JD, Stach K, Dösch C, Saur J, Borggrefe M, Akin I.
PMID: 30544842
J Clin Med. 2018 Dec 09;7(12). doi: 10.3390/jcm7120532.

Airways obstruction is frequent in patients with pulmonary hypertension (PH). Small airway disease (SAD) was identified as a major contributor to resistance and symptoms. However, it is easily missed using current diagnostic approaches. We aimed to evaluate more elaborate...

Analysis of Nanoporosity in Moisture Permeation Barrier Layers by Electrochemical Impedance Spectroscopy.

ACS applied materials & interfaces

Perrotta A, García SJ, Michels JJ, Andringa AM, Creatore M.
PMID: 26147606
ACS Appl Mater Interfaces. 2015 Jul 29;7(29):15968-77. doi: 10.1021/acsami.5b04060. Epub 2015 Jul 15.

Water permeation in inorganic moisture permeation barriers occurs through macroscale defects/pinholes and nanopores, the latter with size approaching the water kinetic diameter (0.27 nm). Both permeation paths can be identified by the calcium test, i.e., a time-consuming and expensive...

Showing 13 to 24 of 176 entries