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Showing 25 to 36 of 907 entries
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Mott Electrons in an Artificial Graphenelike Crystal of Rare-Earth Nickelate.

Physical review letters

Middey S, Meyers D, Doennig D, Kareev M, Liu X, Cao Y, Yang Z, Shi J, Gu L, Ryan PJ, Pentcheva R, Freeland JW, Chakhalian J.
PMID: 26894726
Phys Rev Lett. 2016 Feb 05;116(5):056801. doi: 10.1103/PhysRevLett.116.056801. Epub 2016 Feb 01.

Deterministic control over the periodic geometrical arrangement of the constituent atoms is the backbone of the material properties, which, along with the interactions, define the electronic and magnetic ground state. Following this notion, a bilayer of a prototypical rare-earth...

Coping with drought: stress and adaptive responses in potato and perspectives for improvement.

Frontiers in plant science

Obidiegwu JE, Bryan GJ, Jones HG, Prashar A.
PMID: 26257752
Front Plant Sci. 2015 Jul 22;6:542. doi: 10.3389/fpls.2015.00542. eCollection 2015.

Potato (Solanum tuberosum L.) is often considered as a drought sensitive crop and its sustainable production is threatened due to frequent drought episodes. There has been much research aiming to understand the physiological, biochemical, and genetic basis of drought...

Resting and Postexercise Heart Rate Detection From Fingertip and Facial Photoplethysmography Using a Smartphone Camera: A Validation Study.

JMIR mHealth and uHealth

Yan BP, Chan CK, Li CK, To OT, Lai WH, Tse G, Poh YC, Poh MZ.
PMID: 28288955
JMIR Mhealth Uhealth. 2017 Mar 13;5(3):e33. doi: 10.2196/mhealth.7275.

BACKGROUND: Modern smartphones allow measurement of heart rate (HR) by detecting pulsatile photoplethysmographic (PPG) signals with built-in cameras from the fingertips or the face, without physical contact, by extracting subtle beat-to-beat variations of skin color.OBJECTIVE: The objective of our...

Comparison of cannulated screws with FiberWire or stainless steel wire for patella fracture fixation: A pilot study.

Journal of orthopaedics

Bryant TL, Anderson CL, Stevens CG, Conrad BP, Vincent HK, Sadasivan KK.
PMID: 25972700
J Orthop. 2014 Jun 14;12(2):92-6. doi: 10.1016/j.jor.2014.04.011. eCollection 2015 Jun.

PURPOSE: This pilot study tested whether FiberWire provides similar protection to steel wire against repair displacement in patella fractures.METHODS: Thirteen cadaver knees were cyclically loaded with 10 cycles (0-90° flexion) and fracture displacement was recorded. Fixation methods were also...

Chemical defense of common antarctic shallow-water nudibranchTritoniella belli eliot (Mollusca: Tritonidae) and its prey,Clavularia frankliniana rouel (Cnidaria: Octocorallia).

Journal of chemical ecology

McClintock JB, Baker BJ, Slattery M, Heine JN, Bryan PJ, Yoshida W, Davies-Coleman MT, Faulkner DJ.
PMID: 24241998
J Chem Ecol. 1994 Dec;20(12):3361-72. doi: 10.1007/BF02033732.

Extracts of the dorid nudibranchTritoniella belli and stoloniferan coralClavularia frankliniana were chromatographed and analyzed by(1)H NMR and thin-layer chromatography. Three glycerol ethers were detected inT. belli, primarily 1-O-hexadecyl glycerol (chimyl alcohol). Chimyl alcohol was also detected after gradient flash...

Organic chemistry. Practical olefin hydroamination with nitroarenes.

Science (New York, N.Y.)

Gui J, Pan CM, Jin Y, Qin T, Lo JC, Lee BJ, Spergel SH, Mertzman ME, Pitts WJ, La Cruz TE, Schmidt MA, Darvatkar N, Natarajan SR, Baran PS.
PMID: 25999503
Science. 2015 May 22;348(6237):886-91. doi: 10.1126/science.aab0245. Epub 2015 May 21.

The synthesis and functionalization of amines are fundamentally important in a vast range of chemical contexts. We present an amine synthesis that repurposes two simple feedstock building blocks: olefins and nitro(hetero)arenes. Using readily available reactants in an operationally simple...

Interaction of Carbon Dioxide with Transition-Metal-Substituted Heteropolyanions in Nonpolar Solvents. Spectroscopic Evidence for Complex Formation.

Inorganic chemistry

Szczepankiewicz SH, Ippolito CM, Santora BP, Van De Ven TJ, Ippolito GA, Fronckowiak L, Wiatrowski F, Power T, Kozik M.
PMID: 11670571
Inorg Chem. 1998 Aug 24;37(17):4344-4352. doi: 10.1021/ic980162k.

Tetraheptylammonium salts of various transition-metal-substituted heteropolyanions with alpha-Keggin ([XW(11)O(39)M](n)()(-)), alpha-Wells-Dawson ([P(2)W(17)O(61)M](m)(-)), and Weakley and Finke structures ([P(2)W(18)O(68)Co(4)](10)(-)) were investigated with respect to their reactivity with CO(2) in nonpolar solvents. It was found that copper(II)- and manganese(III)-substituted heteropolyanions do not...

Influence of quantum size effects on island coarsening.

Physical review letters

Jeffrey CA, Conrad EH, Feng R, Hupalo M, Kim C, Ryan PJ, Miceli PF, Tringides MC.
PMID: 16605766
Phys Rev Lett. 2006 Mar 17;96(10):106105. doi: 10.1103/PhysRevLett.96.106105. Epub 2006 Mar 17.

Surface x-ray scattering and scanning-tunneling microscopy experiments reveal novel coarsening behavior of Pb nanocrystals grown on Si(111)-(7 x 7). It is found that quantum size effects lead to the breakdown of the classical Gibbs-Thomson analysis. This is manifested by...

Towards the cellular functions of tumour suppressors.

Trends in cell biology

Bryant PJ.
PMID: 14731715
Trends Cell Biol. 1993 Feb;3(2):31-5. doi: 10.1016/0962-8924(93)90147-s.

Many of the documented changes in cellular DNA that occur during tumour development involve activation of proto-oncogenes, but newer evidence has shown that oncogenesis can involve loss or inactivation of a different group of genes, called tumour suppressor genes...

Effects of concurrent response-independent reinforcement on fixed-interval schedule performance.

Journal of the experimental analysis of behavior

Lattal KA, Bryan AJ.
PMID: 16811964
J Exp Anal Behav. 1976 Nov;26(3):495-504. doi: 10.1901/jeab.1976.26-495.

In three experiments, behavior maintained by fixed-interval schedules changed when response-independent reinforcement was delivered concurrently according to fixed- or variable-time schedules. In Experiment I, a pattern of positively accelerated responding during fixed interval was changed to a linear pattern...

A population-based audit of ethnicity and breast cancer risk in one general practice catchment area in North London, UK: implications for practice.

Hereditary cancer in clinical practice

Ferris M, Easton DF, Doherty RJ, Briggs BH, Newman M, Saraf IM, Scambler S, Wagman L, Wyndham MT, Ward A, Eeles RA.
PMID: 19725992
Hered Cancer Clin Pract. 2007 Sep 15;5(3):157-60. doi: 10.1186/1897-4287-5-3-157.

OBJECTIVES: To conduct a pilot population-based study within a general practice catchment area to determine whether the incidence of breast cancer was increased in the Ashkenazi population.DESIGN: Population-based cohort study.SETTING: A single general practice catchment area in North London.PARTICIPANTS:...

Address.

Public health papers and reports

Bryan JP.
PMID: 19600395
Public Health Pap Rep. 1890;16:23-6.

No abstract available.

Showing 25 to 36 of 907 entries