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Showing 25 to 36 of 752 entries
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Stacked-ring aromaticity: an orbital model.

Organic letters

Bean DE, Fowler PW.
PMID: 19007173
Org Lett. 2008 Dec 18;10(24):5573-6. doi: 10.1021/ol802417n.

Visualization of induced current density using the ipsocentric CHF/CTOCD-DZ/6-31G** approach gives a direct demonstration of the literature proposal of reversal of [4n]annulene antiaromaticity on stacking cyclooctatetraene (COT) rings into a superphane. Through-space interactions lead to a closed-shell in which...

A catalogue of growth transformations of fullerene polyhedra.

Journal of chemical information and computer sciences

Brinkmann G, Fowler PW.
PMID: 14632430
J Chem Inf Comput Sci. 2003 Nov-Dec;43(6):1837-43. doi: 10.1021/ci030017b.

Carbon insertion or extrusion mechanisms transforming one fullerene to another are presented as patch replacements on the fullerene surface. A systematic catalogue is constructed for the topologically distinct local insertion/extrusion transformations of fullerenes, classified by patch boundary and pentagon...

Subglacial floods beneath ice sheets.

Philosophical transactions. Series A, Mathematical, physical, and engineering sciences

Evatt GW, Fowler AC, Clark CD, Hulton NR.
PMID: 16782609
Philos Trans A Math Phys Eng Sci. 2006 Jul 15;364(1844):1769-94. doi: 10.1098/rsta.2006.1798.

Subglacial floods (jökulhlaups) are well documented as occurring beneath present day glaciers and ice caps. In addition, it is known that massive floods have occurred from ice-dammed lakes proximal to the Laurentide ice sheet during the last ice age,...

Current-density maps as probes of aromaticity: global and Clar pi ring currents in totally resonant polycyclic aromatic hydrocarbons.

Faraday discussions

Steiner E, Fowler PW, Soncini A, Jenneskens LW.
PMID: 17328436
Faraday Discuss. 2007;135:309-23; discussion 367-401, 503-6. doi: 10.1039/b604769f.

Calculation and visualisation of induced current density are important aids to the study of both aromaticity and observable molecular magnetic response properties. The ipsocentric method offers an accurate and economical approach to calculation of induced current density, and a...

Epilepsy, neuropsychological deficits, and EEG lateralization.

Archives of clinical neuropsychology : the official journal of the National Academy of Neuropsychologists

Fowler PC, Richards HC, Berent S, Boll TJ.
PMID: 14589572
Arch Clin Neuropsychol. 1987;2(1):81-92.

One hundred eight epileptic patients (59 men, 49 women; 55% partial seizures, 45% generalized) were examined on 45 indices comprising a modified Halstead Neuropsychological Test Battery. Factor analyses identified five dimensions: Verbal Comprehension, Perceptual Organization, Selective Attention, Motor Skills,...

Which pi-clamped conjugated monocycles exhibit ring currents?.

Organic & biomolecular chemistry

Havenith RW, Jenneskens LW, Fowler PW, Soncini A.
PMID: 15105917
Org Biomol Chem. 2004 May 07;2(9):1281-6. doi: 10.1039/b401125b. Epub 2004 Apr 01.

Quenching/survival of ring currents in pi-clamped conjugated monocycles is controlled by the match or mismatch in parity between the frontier orbitals of the central pi-conjugated 4n+2/4n monocycle and those of the clamps. Changes in ring current are not primarily...

Zigzags, railroads, and knots in fullerenes.

Journal of chemical information and computer sciences

Deza M, Dutour M, Fowler PW.
PMID: 15272836
J Chem Inf Comput Sci. 2004 Jul-Aug;44(4):1282-93. doi: 10.1021/ci049955h.

Two connections between fullerene structures and alternating knots are established. Knots may appear in two ways: from zigzags, i.e., circuits (possibly self-intersecting) of edges running alternately left and right at successive vertices, and from railroads, i.e., circuits (possibly self-intersecting)...

The electronic structure of inorganic benzenes: valence bond and ring-current descriptions.

Inorganic chemistry

Engelberts JJ, Havenith RW, van Lenthe JH, Jenneskens LW, Fowler PW.
PMID: 16022524
Inorg Chem. 2005 Jul 25;44(15):5266-72. doi: 10.1021/ic050017o.

Valence bond (VB) theory and ring-current maps have been used to study the electronic structure of inorganic benzene analogues X(6)H(6) (X = C (1), Si (2)), X(6) (X = N (3), P (4)), X(3)Y(3)H(6) (X,Y = B,N (5), B,P...

Prostate cancer: epidemiology and screening.

Reviews in urology

Brawer MK, Crawford ED, Fowler J, Lucia MS, Schröeder FH.
PMID: 16986040
Rev Urol. 2000;2:S5-9.

The challenge continues-to find better methods of screening for prostate cancer, of determining who should undergo needle biopsy, and of predicting who will fail initial therapy. Investigators are looking at the value of neural networks and an array of...

Supporting self and others: from staff nurse to nurse consultant. Part 4: mentoring.

British journal of nursing (Mark Allen Publishing)

Fowler J.
PMID: 21727841
Br J Nurs. 2011 Jun 24-Jul 7;20(12):765. doi: 10.12968/bjon.2011.20.12.765.

This series of articles explores various ways of supporting staff who work in the fast-moving and ever-changing health service. In previous articles, John Fowler an experienced nursing lecturer, author and consultant, examined the importance of developing a supportive working...

Writing for professional publication. Part 5: creating interest.

British journal of nursing (Mark Allen Publishing)

Fowler J.
PMID: 21240140
Br J Nurs. 2011 Jan 13-26;20(1):49. doi: 10.12968/bjon.2011.20.1.49.

The first four parts of this series on writing for professional publication focused on the research and preparation required before beginning to write a potential article. In this fifth part of the series, John Fowler, an experienced nursing lecturer...

Combination of column temperature gradient and mobile phase flow gradient in microcolumn and capillary column high-performance liquid chromatography.

Analytical chemistry

Houdiere F, Fowler PW, Djordjevic NM.
PMID: 21639394
Anal Chem. 1997 Jul 01;69(13):2589-93. doi: 10.1021/ac9612741.

The combination of several gradient modes (solvent, temperature, and flow programming) is rarely used in HPLC analysis. In this work, the separations obtained utilizing simultaneous flow and temperature gradient in capillary column and microcolumn HPLC were compared with the...

Showing 25 to 36 of 752 entries