Uroterpenol β-<scp>D</scp>-glucuronide

Dean, F. M.; Price, A. W.; Wade, A. P.; Wilkinson, Gregg S.

doi:10.1039/j39670001893

Cited by 28 publications

(36 citation statements)

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“…He studied the centre in absorption in very thin samples-it is often obscured by the 'secondary absorption edge' due to the A nitrogen aggregate. N9 luminescence can be found in most Ia and IIa diamonds, though not in types I b and IIb (Dean and Male 1964a,b, Lightowlers and Dean 1964, Wight and Dean 1967.…”

Section: Unirradiated Diamondmentioning

confidence: 99%

“…Qther authors (Clark et a1 1956a, Dean and Male 1964b, Wight 1968, Burton 1972, Davies 1974a have recorded zero-phonon lines very close in energy to all of the S2 transitions, particularly in irradiated type I b crystals.…”

Section: 24mentioning

confidence: 99%

“…It is also quenched by radiation damage. Type IIa material may show weaker luminescence than type Ia (Dean and Male 1964b, Dean 1965, Crossfield 1974, Kiflawi and Lang 1974, Sobolev and Dubov 1975.…”

Section: Band a Luminescencementioning

confidence: 99%

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Optical absorption and luminescence in diamond

1979

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The optical properties of diamond are important in theoretical solid-state physics, geology, electronics and diamond synthesis.This review outlines some relevant aspects of theoretical physics-molecular orbital and other calculations of the properties of point defects, symmetry and group theory, zero-phonon lines and the configuration coordinate diagram.The experimentally observed spectra can conveniently be divided into infrared ( < 1 eV), which are observed in absorption and are mainly vibrational, and 'visible' (1-5.5 eV), which are vibronic and are observed in both absorption and luminescence.'Visible' spectra include those present naturally, those induced by irradiation, and those induced by irradiation plus annealing.This review covers all the important point defects observed optically in diamond, and includes some results which are not generally available. The relevance of the experimental results to the current controversy about how to calculate the properties of point defects is brought out.

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Section: Unirradiated Diamondmentioning

confidence: 99%

Section: 24mentioning

confidence: 99%

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Optical absorption and luminescence in diamond

1979

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“…Probes for the octamers correspond to the double-stranded oligonucleotides used in plasmid construction described above. The ATF probe was described previously (22).…”

Section: Methodsmentioning

confidence: 99%

Vascular cell adhesion molecule 1: contrasting transcriptional control mechanisms in muscle and endothelium.

Iademarco

McQuillan

Dean

1993

Proc. Natl. Acad. Sci. U.S.A.

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Interaction between vascular cell adhesion molecule 1 (VCAM-1), which appears on the surface of endothelial cells in response to inflammation, and its integrin counter receptor, a4fi1, on immune cells is responsible for targeting these immune cells to cytokine-stimulated endothelium. In addition to its role in the immune system, VCAM-1 is also expressed in a developmentally specific pattern on differentiating skeletal muscle, where it mediates cell-cell interactions important for myogenesis through interaction with a4f31. In contrast to endothelium, there is high basal expression of VCAM-1 in skeletal muscle cells and the expression is not cytokine-responsive. Here, we examine the molecular basis for these contrasting patterns of expression in muscle and endothelium, using VCAM-1 promoter constructs in a series of transfection assays. In endothelial cells, octamer binding sites act as silencers that prevent VCAM-1 expression in unstimulated cells. Tumor necrosis factor a overcomes the negative effects of these octamers and activates the promoter through two adjacent NF-KB binding sites. In muscle cells, a positionspecific enhancer located between bp -21 and -5 overrides the effect of other promoter elements, resulting in constitutive VCAM-1 expression. A nuclear protein binds the positionspecific enhancer in muscle but not endothelial cells; thus the pattern of expression of this protein could control enhancer activity.

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“…Di-11-propylammonium hexafluorotitanate was prepared as reported earlier (4). The syntheses of tetra-nbutylammonium hexachlorotitanate and hexabromo---6The plot in Fig.…”

Section: Methodsmentioning

confidence: 99%

The ¹⁹F Nuclear Magnetic Resonance Spectra of Octahedral Fluorothiocyanato-N- and Fluorocyanato-N-Titanates(IV)

Dean¹,

Ferguson²

1974

Can. J. Chem.

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The low temperature l g F n.m.r. spectra of the mixtures TiF62--TiX62-(X = CI-, Br-, NCS-, NCO-) in sulfur dioxidesolution have been examined. When X = Cl-or Br-rapid fluorine exchange is occurring even at the lowest accessible temperature, but when X = NCS-or NCO-the spectra of the individual mixed species TiF, -,X,Z-are observed. In the latter two cases the solutions also contain fluorine-bridged dimers in stable equilibrium. The I9F chemical shifts of TiF6-,XX2-(X = NCS-or NCO-) and of some related mixed complexes are reasonably represented by the equation 6 = pC + q T where C a n d T a r e constants characteristic of the substituent X a n d p and q are the number of ligands X cis and trans respectively to the resonating fluorine. The constants T appear to be a measure of the n-donor ability of the ligand X in these complexes, supporting the idea that the chemical shift of a fluorine in fluorotitanates is determined largely by the extent to which fluorine-to-titanium back donation occurs.Les spectres r.m.n. a basses temperatures du 19F, des melanges TiFs2--TiXsZ-(X = Cl-, Br-, NCS-, NCO-) dans des solutions d'anhydride sulfureux ont CtC examines. Lorsque X = C1-ou Br-1'Cchange rapide du fluore se produit mime a la plus basse temperature accessible, par contre lorsque X = NCS-ou NCO-les spectres individuels des esptces mClangCes TiF, -,XzZ -sont observes. Dans ces deux derniers cas les solutions contiennent tgalement en Cquilibre stable des dimtres par pont fluor. Les deplacements chimiques du 19F de TiF, -,Xx2-(X = NCS-ou NCO-) et de quelques complexes mixtes apparentis sont assez bien decrits par I'equation 6 = pC + q T oh C et T sont des constantes caratiristiques du substituent X et p et q sont les nombres de ligands X en position cis et trans respectivement par rapport au fluor resonant. Les constantes T se rtvtlent comme des mesures d u caracttre n-donneur du ligand X dans ces complexes, ce qui prouve que le diplacement chimique de fluor dans les fluorotitanates est determine en grande partie par I'importance du transfert en retour fluor a titane.[Traduit par le journal]Can.

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Uroterpenol β-D-glucuronide

Cited by 28 publications

References 0 publications

Optical absorption and luminescence in diamond

Optical absorption and luminescence in diamond

Vascular cell adhesion molecule 1: contrasting transcriptional control mechanisms in muscle and endothelium.

The ¹⁹F Nuclear Magnetic Resonance Spectra of Octahedral Fluorothiocyanato-N- and Fluorocyanato-N-Titanates(IV)

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Uroterpenol β-D-glucuronide

Cited by 28 publications

References 0 publications

Optical absorption and luminescence in diamond

Optical absorption and luminescence in diamond

Vascular cell adhesion molecule 1: contrasting transcriptional control mechanisms in muscle and endothelium.

The 19F Nuclear Magnetic Resonance Spectra of Octahedral Fluorothiocyanato-N- and Fluorocyanato-N-Titanates(IV)

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The ¹⁹F Nuclear Magnetic Resonance Spectra of Octahedral Fluorothiocyanato-N- and Fluorocyanato-N-Titanates(IV)