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Showing 1 to 12 of 166 entries
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Dual fluorescence of (E)-N-(4-(dimethylamino)benzylidene)-2H-1,2,4-triazol-3-amine (DMABA-Amtr): A ground state perspective.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy

Mengesha ET, Demissie TB, Redi-Abshiro M, Mohammed AM.
PMID: 28886506
Spectrochim Acta A Mol Biomol Spectrosc. 2018 Jan 15;189:601-607. doi: 10.1016/j.saa.2017.08.070. Epub 2017 Sep 01.

We present the absorption and fluorescence spectra of (E)-N-(4-(dimethylamino)benzylidene)-2H-1,2,4-triazol-3-amine (DMABA-Amtr), an electron donor-π-acceptor system. The molecule shows a single fluorescence emission band in non-polar solvents while dual emissions were observed in polar aprotic solvents. Although several researchers over the...

Leveraging Social Media to Promote Public Health Knowledge: Example of Cancer Awareness via Twitter.

JMIR public health and surveillance

Xu S, Markson C, Costello KL, Xing CY, Demissie K, Llanos AA.
PMID: 27227152
JMIR Public Health Surveill. 2016 Apr 28;2(1):e17. doi: 10.2196/publichealth.5205. eCollection 2016.

BACKGROUND: As social media becomes increasingly popular online venues for engaging in communication about public health issues, it is important to understand how users promote knowledge and awareness about specific topics.OBJECTIVE: The aim of this study is to examine...

Mechanism and Site Selectivity in Visible-Light Photocatalyzed C-H Functionalization: Insights from DFT Calculations.

The Journal of organic chemistry

Demissie TB, Hansen JH.
PMID: 27347684
J Org Chem. 2016 Aug 19;81(16):7110-20. doi: 10.1021/acs.joc.6b00977. Epub 2016 Jul 07.

Visible-light photocatalyzed (VLPC) late-stage C-H functionalization is a powerful addition to the chemical synthesis toolkit. VLPC has a demonstrated potential for discovery of elusive and valuable transformations, particularly in functionalization of bioactive heterocycles. In order to fully harvest the...

Reply.

The Journal of pediatrics

Cole CH, Frantz ID, Mackinnon B, Shah B, Abbasi S, Colton T, Demissie S.
PMID: 10839893
J Pediatr. 2000 Jun;136(6):852. doi: 10.1067/mpd.2000.104063.

No abstract available.

Conducting Molecular Epidemiological Research in the Age of HIPAA: A Multi-Institutional Case-Control Study of Breast Cancer in African-American and European-American Women.

Journal of oncology

Ambrosone CB, Ciupak GL, Bandera EV, Jandorf L, Bovbjerg DH, Zirpoli G, Pawlish K, Godbold J, Furberg H, Fatone A, Valdimarsdottir H, Yao S, Li Y, Hwang H, Davis W, Roberts M, Sucheston L, Demissie K, Amend KL, Tartter P, Reilly J, Pace BW, Rohan T, Sparano J, Raptis G, Castaldi M, Estabrook A, Feldman S, Weltz C, Kemeny M.
PMID: 19865486
J Oncol. 2009;2009:871250. doi: 10.1155/2009/871250. Epub 2009 Oct 25.

Breast cancer in African-American (AA) women occurs at an earlier age than in European-American (EA) women and is more likely to have aggressive features associated with poorer prognosis, such as high-grade and negative estrogen receptor (ER) status. The mechanisms...

Spin-rotation and NMR shielding constants in XF molecules (X = B, Al, Ga, In, and Tl).

The journal of physical chemistry. A

Jaszuński M, Demissie TB, Ruud K.
PMID: 25192304
J Phys Chem A. 2014 Oct 09;118(40):9588-95. doi: 10.1021/jp507129y. Epub 2014 Sep 23.

Accurate spin-rotation and absolute shielding constants in a series of XF molecules (X = (11)B, (27)Al, (69)Ga, (115)In, and (205)Tl) determined using high-level ab initio coupled-cluster and four-component relativistic density-functional theory (DFT) calculations are presented. The accuracy of the...

Optically Activated Delayed Fluorescence through Control of Cyanine Dye Photophysics.

The journal of physical chemistry. A

Mahoney DP, Demissie AA, Dickson RM.
PMID: 30908044
J Phys Chem A. 2019 Apr 25;123(16):3599-3606. doi: 10.1021/acs.jpca.9b01333. Epub 2019 Apr 15.

Merocyanine 540 fluorescence can be enhanced by optically depopulating dark photoisomer states to regenerate the fluorescence-generating manifold of the all-trans isomer. Here, we utilize a competing modulation route, long-wavelength coexcitation of the trans triplet population to not only modulate...

Fine mapping the .

NPJ aging and mechanisms of disease

van Leeuwen EM, Huffman JE, Bis JC, Isaacs A, Mulder M, Sabo A, Smith AV, Demissie S, Manichaikul A, Brody JA, Feitosa MF, Duan Q, Schraut KE, Navarro P, van Vliet-Ostaptchouk JV, Zhu G, Mbarek H, Trompet S, Verweij N, Lyytikäinen LP, Deelen J, Nolte IM, van der Laan SW, Davies G, Vermeij-Verdoold AJ, van Oosterhout AA, Vergeer-Drop JM, Arking DE, Trochet H, Medina-Gomez C, Rivadeneira F, Uitterlinden AG, Dehghan A, Franco OH, Sijbrands EJ, Hofman A, White CC, Mychaleckyj JC, Peloso GM, Swertz MA, Willemsen G, de Geus EJ, Milaneschi Y, Penninx BW, Ford I, Buckley BM, de Craen AJ, Starr JM, Deary IJ, Pasterkamp G, Oldehinkel AJ, Snieder H, Slagboom PE, Nikus K, Kähönen M, Lehtimäki T, Viikari JS, Raitakari OT, van der Harst P, Jukema JW, Hottenga JJ, Boomsma DI, Whitfield JB, Montgomery G, Martin NG, Polasek O, Vitart V, Hayward C, Kolcic I, Wright AF, Rudan I, Joshi PK, Wilson JF, Lange LA, Wilson JG, Gudnason V, Harris TB, Morrison AC, Borecki IB, Rich SS, Padmanabhan S, Psaty BM, Rotter JI, Smith BH, Boerwinkle E, Cupples LA, van Duijn C.
PMID: 28721259
NPJ Aging Mech Dis. 2015 Nov 12;1:15011. doi: 10.1038/npjamd.2015.11. eCollection 2015.

BACKGROUND: Individuals with exceptional longevity and their offspring have significantly larger high-density lipoprotein concentrations (HDL-C) particle sizes due to the increased homozygosity for the I405V variant in the cholesteryl ester transfer protein (METHODS: We performed a meta-analysis of HDL-C...

Roentgenium generation.

Nature chemistry

Demissie TB.
PMID: 30131560
Nat Chem. 2018 Sep;10(9):992. doi: 10.1038/s41557-018-0131-7.

No abstract available.

Communities' perceptions towards cervical cancer and its screening in Wolaita zone, southern Ethiopia: A qualitative study.

PloS one

Demissie BW, Azeze GA, Asseffa NA, Lake EA, Besha BB, Gelaw KA, Mokonnon TM, Gebeyehu NA, Obsa MS.
PMID: 34995307
PLoS One. 2022 Jan 07;17(1):e0262142. doi: 10.1371/journal.pone.0262142. eCollection 2022.

BACKGROUND: Cervical cancer is a malignant neoplasm from cells originating in the cervix uteri. Any woman who is sexually active is at risk of getting HPV. Women in sub-Saharan Africa region have higher chance of developing the disease. There...

Structure and NMR spectra of cyclophanes with unsaturated bridges (cyclophenes).

Magnetic resonance in chemistry : MRC

Dodziuk H, Demissie TB, Ruud K, Szymański S, Jaźwiński J, Hopf H.
PMID: 22539441
Magn Reson Chem. 2012 Jun;50(6):449-57. doi: 10.1002/mrc.3821. Epub 2012 Apr 26.

The calculated structures of several known and hypothetical cyclophanes with ethylene bridges (cyclophenes) are reported together with experimental and calculated values of their NMR parameters. Of the exchange-correlation functionals and basis sets used in this work, only the ωB97X-D/6-311++G(2d,2p)...

Optical Photothermal Infrared Microspectroscopy with Simultaneous Raman - A New Non-Contact Failure Analysis Technique for Identification of <10 μm Organic Contamination in the Hard Drive and other Electronics Industries.

Microscopy today

Kansiz M, Prater C, Dillon E, Lo M, Anderson J, Marcott C, Demissie A, Chen Y, Kunkel G.
PMID: 33850481
Micros Today. 2020 May;28(3):26-36. doi: 10.1017/s1551929520000917. Epub 2020 May 18.

Optical Photothermal Infrared (O-PTIR) spectroscopy is a new technique for measuring submicron spatial resolution IR spectra with little or no sample preparation. This speeds up analysis times benefiting high-volume manufacturers through gaining insight into process contamination that occurs during...

Showing 1 to 12 of 166 entries