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Showing 1 to 12 of 176 entries
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Flower evolution: the origin and subsequent diversification of the angiosperm flower

STEM and diversification

Bartlett ME, Specht CD.
GSID: 7iEx5fEEiMIJ
CD Specht, ME Bartlett - Annual Review of Ecology, Evolution …, 2009 - researchgate.net

… Likewise, a view to the fossil record can provide documentation of reproductive innovations occurring within gymnosperms or along the stem lineage leading to angiosperms, …

The spectrum and outcome of surgical sepsis in Pietermaritzburg, South Africa.

South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde

Green S, Kong VY, Clarke DL, Sartorius B, Odendaal J, Bruce JL, Laing GL, Brysiewicz P, Bekker W, Harknett E.
PMID: 28220740
S Afr Med J. 2017 Jan 30;107(2):134-136. doi: 10.7196/SAMJ.2017.v107i2.11339.

BACKGROUND: Sepsis is a leading cause of morbidity and mortality worldwide, and the incidence appears to be increasing. In the resource-limited environment in low- and middle-income countries, the management of surgical sepsis (SS) continues to represent a significant portion...

Charge Separation Mechanisms in Ordered Films of Self-Assembled Donor-Acceptor Dyad Ribbons.

ACS applied materials & interfaces

Logsdon JL, Hartnett PE, Nelson JN, Harris MA, Marks TJ, Wasielewski MR.
PMID: 28430417
ACS Appl Mater Interfaces. 2017 Oct 04;9(39):33493-33503. doi: 10.1021/acsami.7b02585. Epub 2017 Apr 21.

Orthogonal attachment of polar and nonpolar side-chains to a zinc porphyrin-perylenediimide dyad (ZnP-PDI, 1a) is shown to result in self-assembly of ordered supramolecular ribbons in which the ZnP and PDI molecules form segregated π-stacked columns. Following photoexcitation of the...

Organic Oxidations Using Geomimicry.

The Journal of organic chemistry

Yang Z, Hartnett HE, Shock EL, Gould IR.
PMID: 26561976
J Org Chem. 2015 Dec 18;80(24):12159-65. doi: 10.1021/acs.joc.5b02109. Epub 2015 Nov 25.

Oxidations of phenylacetic acid to benzaldehyde, benzyl alcohol to benzaldehyde, and benzaldehyde to benzoic acid have been observed, in water as the solvent and using only copper(II) chloride as the oxidant. The reactions are performed at 250 °C and...

Greetings from the association of faculties of pharmacy of Canada.

American journal of pharmaceutical education

Hartnett GE.
PMID: 10237104
Am J Pharm Educ. 1975 May;39(2):111-2.

No abstract available.

New method to build a high stability sapphire oscillator from the temperature compensation of the difference frequency between modes of orthogonal polarization.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control

Tobar ME, Hamilton GL, Ivanov EN, Hartnett JG.
PMID: 12699154
IEEE Trans Ultrason Ferroelectr Freq Control. 2003 Mar;50(3):214-9. doi: 10.1109/tuffc.2003.1193614.

A new method to construct a high stability sapphire oscillator is presented (patent pending). The method relies on the anisotropic fractional temperature coefficients of frequency (TCF) of orthogonally polarized modes. We show that it is possible to design a...

TIME FOR NURSING CARE.

The American journal of nursing

HARTNETT WF, BALLANTYNE DJ, TILLOCK EE.
PMID: 14327460
Am J Nurs. 1965 Aug;65:98-101.

No abstract available.

Whispering-gallery mode technique applied to the measurement of the dielectric properties of Langasite between 4 K and 300 K.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control

Giordano V, Hartnett JG, Krupka J, Kersalé Y, Bourgeois PY, Tobar ME.
PMID: 15217225
IEEE Trans Ultrason Ferroelectr Freq Control. 2004 May;51(5):484-90.

We report new measurements of dielectric properties of Lanthanum gallium silicate (Langasite or LGS) conducted with the whispering-gallery mode technique at microwave frequencies and between 4.2 K and 300 K. The real part of the permittivity tensor of LGS...

Distributed bragg reflector resonators with cylindrical symmetry and extremely high Q-factors.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control

Tobar ME, le Floch JM, Cros D, Hartnett JG.
PMID: 15742559
IEEE Trans Ultrason Ferroelectr Freq Control. 2005 Jan;52(1):17-26. doi: 10.1109/tuffc.2005.1397346.

A simple non-Maxwellian method is presented that allows the approximate solution of all the dimensions of a multilayered dielectric TE0qp mode cylindrical resonant cavity that constitutes a distributed Bragg reflection (DBR) resonator. The analysis considers an arbitrary number of...

Temporal vegetation dynamics and recolonization mechanisms on different-sized soil disturbances in tallgrass prairie.

American journal of botany

Rogers WE, Hartnett DC.
PMID: 21669697
Am J Bot. 2001 Sep;88(9):1634-42.

Assessing the various mechanisms by which plants revegetate disturbances is important for understanding the effects of disturbances on plant population dynamics, plant community structure, community assembly processes, and ecosystem function. We initiated a 2-yr experiment examining temporal vegetation dynamics...

Association between assisted reproductive technology and advanced retinopathy of prematurity.

Clinical ophthalmology (Auckland, N.Z.)

Chan RV, Yonekawa Y, Morrison MA, Sun G, Wong RK, Perlman JM, Chiang MF, Lee TC, Hartnett ME, Deangelis MM.
PMID: 21179223
Clin Ophthalmol. 2010 Nov 26;4:1385-90. doi: 10.2147/OPTH.S15587.

PURPOSE: To investigate the associations between assisted reproductive technology (ART) and severe retinopathy of prematurity (ROP) requiring treatment.METHODS: Retrospective analyses of inborn preterm infants screened for severe ROP at the Weill Cornell Medical Center Neonatal Intensive Care Unit at...

Variation in grazing tolerance among three tallgrass prairie plant species.

American journal of botany

Damhoureyeh SA, Hartnett DC.
PMID: 21665591
Am J Bot. 2002 Oct;89(10):1634-43. doi: 10.3732/ajb.89.10.1634.

Three tallgrass prairie plant species, two common perennial forbs (Artemisia ludoviciana and Aster ericoides [Asteraceae]) and a dominant C(4) perennial grass (Sorghastrum nutans) were studied under field and greenhouse conditions to evaluate interspecific variation in grazing tolerance (compensatory growth...

Showing 1 to 12 of 176 entries