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Showing 1 to 12 of 171 entries
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Promotion of Organic Reactions by Non-Benzenoid Carbocyclic Aromatic Ions.

Angewandte Chemie (International ed. in English)

Lyons DJ, Crocker RD, BlĂ¼mel M, Nguyen TV.
PMID: 27506518
Angew Chem Int Ed Engl. 2017 Feb 01;56(6):1466-1484. doi: 10.1002/anie.201605979. Epub 2016 Dec 13.

The first three primary members of the non-benzenoid carbocyclic aromatic ion family, namely cyclopropenium, cyclopentadienide, and cycloheptatrienium (tropylium) ions, have planar cyclic structures with (4n+2)Ï€ electrons in fully conjugated systems. They fulfill HĂ¼ckel's rule for aromaticity and hence possess...

Fabricating low cost and high performance elastomer lenses using hanging droplets.

Biomedical optics express

Lee WM, Upadhya A, Reece PJ, Phan TG.
PMID: 24877020
Biomed Opt Express. 2014 Apr 24;5(5):1626-35. doi: 10.1364/BOE.5.001626. eCollection 2014 May 01.

Existing methods for low cost lenses using parallel mold stamping and high temperature reflow requires complex engineering controls to produce high quality lenses. These manufacturing techniques rely on expensive equipment. In this paper, we propose a low cost (<...

Using back focal plane interferometry to probe the influence of Zernike aberrations in optical tweezers.

Optics letters

Dixon TF, Russell LW, Andres-Arroyo A, Reece PJ.
PMID: 28957221
Opt Lett. 2017 Aug 01;42(15):2968-2971. doi: 10.1364/OL.42.002968.

We experimentally investigate the influence of geometric aberrations in optical tweezers using back focal plane interferometry. We found that the introduction of coma aberrations causes significant modification to the Brownian motion of the trapped particle, producing an apparent cross-coupling...

Patch-Burn Grazing Effects on the Ecological Integrity of Tallgrass Prairie Streams.

Journal of environmental quality

Jackson KE, Whiles MR, Dodds WK, Reeve JD, Vandermyde JM, Rantala HM.
PMID: 26437096
J Environ Qual. 2015 Jul;44(4):1148-59. doi: 10.2134/jeq2014.10.0437.

Conversion to agriculture, habitat fragmentation, and the loss of native grazers have made tallgrass prairie one of the most endangered ecosystems. One management option for the remaining prairie parcels, patch-burn grazing (PBG), applies a controlled burn to a portion...

The Resurgence of the Highly Ylidic N-Heterocyclic Olefins as a New Class of Organocatalysts.

Chemistry (Weinheim an der Bergstrasse, Germany)

Crocker RD, Nguyen TV.
PMID: 26608598
Chemistry. 2016 Feb 12;22(7):2208-13. doi: 10.1002/chem.201503575. Epub 2015 Nov 26.

In recent decades, N-heterocyclic carbenes have become established as a prevalent family of organocatalysts. N-Heterocyclic olefins, the alkylidene derivatives of N-heterocyclic carbenes, have recently also emerged as efficient promoters for CO2 fixation and polymerization reactions. Their extraordinarily strong Lewis/Brønsted...

Dynamical role of predators in population cycles of a forest insect: An experimental test .

Science (New York, N.Y.)

Turchin P, Taylor AD, Reeve JD.
PMID: 10446053
Science. 1999 Aug 13;285(5430):1068-71. doi: 10.1126/science.285.5430.1068.

Population cycles occur frequently in forest insects. Time-series analysis of fluctuations in one such insect, the southern pine beetle (Dendroctonus frontalis), suggests that beetle dynamics are dominated by an ecological process acting in a delayed density-dependent manner. The hypothesis...

Efficient silicon light-emitting diodes.

Nature

Green MA, Zhao J, Wang A, Reece PJ, Gal M.
PMID: 11518962
Nature. 2001 Aug 23;412(6849):805-8. doi: 10.1038/35090539.

Considerable effort is being expended on the development of efficient silicon light-emitting devices compatible with silicon-based integrated circuit technology. Although several approaches are being explored, all presently suffer from low emission efficiencies, with values in the 0.01-0.1% range regarded...

Does leaf water efficiency vary among eucalypts in water-limited environments?.

Tree physiology

Hatton T, Reece P, Taylor P, McEwan K.
PMID: 12651339
Tree Physiol. 1998 Aug-Sep;18(8):529-536. doi: 10.1093/treephys/18.8-9.529.

There is a need to generalize water use behavior of eucalypts to facilitate bioengineering and landscape remediation programs in a wide range of Australian environments. A critical question can be stated as a null hypothesis: tree water use per...

Disaster training.

Military medicine

REESE RD, COLLINS TA.
PMID: 14037478
Mil Med. 1962 Mar;127:266-71.

No abstract available.

Cardiac assessment for renal transplantation should be evidence based.

American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons

Reese PP, Beckman J.
PMID: 16796714
Am J Transplant. 2006 Aug;6(8):1977-8; author reply 1979. doi: 10.1111/j.1600-6143.2006.01440.x. Epub 2006 Jun 22.

No abstract available.

VLF radio signals observed in Newfoundland during the solar eclipse of March 7, 1970.

Nature

Rycroft MJ, Reeve CD.
PMID: 16057701
Nature. 1970 Jun 20;226(5251):1126-7. doi: 10.1038/2261126a0.

No abstract available.

Estimating stand water use of large mountain ash trees and validation of the sap flow measurement technique.

Tree physiology

Vertessy RA, Hatton TJ, Reece P, O'Sullivan SK, Benyon RG.
PMID: 14759884
Tree Physiol. 1997 Dec;17(12):747-56. doi: 10.1093/treephys/17.12.747.

Mountain ash (Eucalyptus regnans F.J. Muell.) forest catchments exhibit a strong relationship between stand age and runoff, attributed inter alia to differences in tree water use. However, the tree water use component of the mountain ash forest water balance...

Showing 1 to 12 of 171 entries