Showing 881 - 900 results of 953 for search '"absorption spectrum"', query time: 0.22s Refine Results
  1. 881

    High energy pulsed fiber lasers by Zhang, Meng

    Published 2018
    “…We analyzed its key feature, the absorption and emission of electromagnetic radiation, and reported a problem commonly encountered in conventional absorption spectrum measurement for the first time in the world. …”
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    Thesis
  2. 882

    Rapid investigation of the metabolite content in Hibiscus sabdariffa var. UKMR-2 cultivated under the influence of elevated co2 using tri-step ft-ir spectroscopy by Siti Aishah Mohd Ali, Jalifah Latip

    Published 2021
    “…The 1D-IR spectrum results revealed a similar absorption spectrum in the range of 1900 - 650 cm-1, which suggest similar major metabolites content present in both extracts. …”
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    Article
  3. 883

    Optical studies on Tb3+: Dy3+ singly and doubly doped borosilicate glasses for white light and solid state lighting applications by Abbas, Bashar Khudhair, Fong, Wai Leng, Haider, Kh A., Omar Baki, Sharudin, Mohd Zaid, Mohd Hafiz, Mahdi, Mohd Adzir

    Published 2020
    “…The J-O (Judd-Ofelt) intensity parameters Ωt(t=2,4,6) are evaluated for both singly Dy3+, Tb3+ doped glasses according to their absorption spectrum. The Ω2 parameter of Dy3+ ion has higher value which indicates a higher degree of Dy3+ covalency and the neighbour ligands while Tb3+ ion in a lower degree of covalency where its Ω2 has low value. …”
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    Article
  4. 884

    Development Of A Portable Membrane-Color-Sensor For Detection Of Heavy Metal by Azmi, Nur Atiah

    Published 2019
    “…Dithizone (DTz) at unadjusted pH was capable to produce an obvious color transition observed through UV-visible absorption spectrum and naked eyes recognition. The optimum immobilization of DTz required the concentration of 100 ppm and 10 minutes immobilization time. …”
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    Thesis
  5. 885

    Enhanced energy transfer from diolefinic laser dyes to meso-tetrakis (4-sulfonatophenyl) porphyrin immobilized on silver nanoparticles: DFT, TD-DFT and spectroscopic studies by AboAlhasan, Ahmed A., Sakr, Mahmoud A. S., Abdelbar, Mostafa F., El-Sheshtawy, Hamdy S., El-Daly, Samy A., Ebeid, El-Zeiny M., Al-Ashwal, Rania Hussien, Al-Hazmy, Sadeq M.

    Published 2022
    “…The critical transfer distances Ro were determined from the spectral overlap between the emission spectrum of donor and absorption spectrum of TTPS. These out-comes propose the application of designed metal-enhanced FRET for energy-transfer-based assays and photodynamic therapy (PDT) applications.…”
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    Article
  6. 886

    Disk and Envelope Streamers of the GGD 27-MM1 Massive Protostar by M. Fernández-López, J. M. Girart, J. A. López-Vázquez, R. Estalella, G. Busquet, S. Curiel, N. Añez-López

    Published 2023-01-01
    “…Another fit to the central absorption spectrum suggests that the absorption is probably caused by different external cold layers from the envelope or the accretion streamers. …”
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    Article
  7. 887
  8. 888

    Optimization of Sb<sub>2</sub>S<sub>3</sub> Nanocrystal Concentrations in P<sub>3</sub>HT: PCBM Layers to Improve the Performance of Polymer Solar Cells by E. M. Mkawi, Y. Al-Hadeethi, R. S. Bazuhair, A. S. Yousef, E. Shalaan, B. Arkook, A. M. Abdeldaiem, Rahma Almalki, E. Bekyarova

    Published 2021-06-01
    “…A UV–visible absorption spectra measurement showed the relationship between the optoelectronic properties and improved surface morphology, and this enhancement was detected by a red shift in the absorption spectrum. The absorber layer’s doping concentration played a definitive role in improving the device’s performance. …”
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    Article
  9. 889

    Towards Highly Efficient Nitrogen Dioxide Gas Sensors in Humid and Wet Environments Using Triggerable-Polymer Metasurfaces by Octavian Danila, Barry M. Gross

    Published 2023-01-01
    “…Additionally, instead of measuring the absorption spectrum of the NO<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>2</mn></msub></semantics></math></inline-formula> gas, in which humidity counts as a parasitic effect due to spectral overlap, this method allows tuning to a desired wavelength at which the water molecules are transparent, by scaling the geometry and thicknesses of the layers to respond to a desired wavelength. …”
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    Article
  10. 890

    Impact of Residual Water Vapor on the Simultaneous Measurements of Trace CH<sub>4</sub> and N<sub>2</sub>O in Air with Cavity Ring-Down Spectroscopy by Qianhe Wei, Bincheng Li, Jing Wang, Binxing Zhao, Ping Yang

    Published 2021-02-01
    “…Still, due to the broad and strong absorption spectrum of H<sub>2</sub>O in the entire mid-infrared (mid-IR) spectral range, residual H<sub>2</sub>O in the dried ambient air due to incomplete drying and leakage, if not properly accounted for, could cause a significant influence on the measurement accuracy of the simultaneous CH<sub>4</sub> and N<sub>2</sub>O detection. …”
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    Article
  11. 891

    A TMVP1-modified near-infrared nanoprobe: molecular imaging for tumor metastasis in sentinel lymph node and targeted enhanced photothermal therapy by Xueqian Wang, Geyang Dai, Guiying Jiang, Danya Zhang, Ling Wang, Wen Zhang, Huang Chen, Teng Cheng, Ying Zhou, Xiao Wei, Fei Li, Ding Ma, Songwei Tan, Rui Wei, Ling Xi

    Published 2023-04-01
    “…The particle diameter, morphology, drug encapsulation efficiency, UV absorption spectrum, cytotoxicity, safety, and pharmacokinetic properties were determined. …”
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    Article
  12. 892

    Exploring terahertz spectral characteristics of L-sorbose and D-melibiose in solid and liquid states by Boyan Zhang, Yuhan Zhao, Jingyi Shu, Bingxin Yan, Bo Peng, Siyu Qian, Bo Su, Cunlin Zhang

    Published 2024-01-01
    “…The results demonstrate that the intramolecular and intermolecular interactions of the saccharides were weakened by the presence of water molecules, and the THz absorption spectrum of the same substance solution was found to be correlated with its concentration and temperature.…”
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    Article
  13. 893

    High-resolution structure and biochemical properties of the LH1–RC photocomplex from the model purple sulfur bacterium, Allochromatium vinosum by Kazutoshi Tani, Ryo Kanno, Ayaka Harada, Yuki Kobayashi, Akane Minamino, Shinji Takenaka, Natsuki Nakamura, Xuan-Cheng Ji, Endang R. Purba, Malgorzata Hall, Long-Jiang Yu, Michael T. Madigan, Akira Mizoguchi, Kenji Iwasaki, Bruno M. Humbel, Yukihiro Kimura, Zheng-Yu Wang-Otomo

    Published 2024-02-01
    “…While modest but distinct effects of Ca2+ were detected in the absorption spectrum of the Alc. vinosum LH1 complex, a marked decrease in thermostability of its LH1–RC complex was observed upon removal of Ca2+. …”
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    Article
  14. 894

    Hydrothermal conversion of analcime-pollucite solid solution from soil for immobilization of Cs in situand its characterization by Jie Liu, Junjie Fan, Yafei Zhang, Jiajun Miao, Mingzhao Cheng, Aihua Yao, Zhenzi Jing

    Published 2021-01-01
    “…The extended X-ray absorption spectrum fine structure (EXAFS) and near-infrared spectrum (NIR) analyses proved that Cs ^+ entered into the structure of the formed solid solutions via replacement of water molecules, and it also led to a distortion of the framework of the solid solution with the change of the Cs–O bond length. …”
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    Article
  15. 895

    Engineering tumor-specific catalytic nanosystem for NIR-II photothermal-augmented and synergistic starvation/chemodynamic nanotherapy by Shuixiu Zhou, Jiahuan Xu, Yanfei Dai, Yan Wei, Liang Chen, Wei Feng, Yu Chen, Xuejun Ni

    Published 2022-11-01
    “…In addition, ultraviolet-visible-near-infrared (UV-vis-NIR) absorption spectrum and infrared thermal camera were applied to evaluate the catalytic and photothermal performance, respectively. …”
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    Article
  16. 896

    AKTIVITAS TERMOPROTEKSI DAN FOTOPROTEKSI EKSTRAK KASAR KAROTENOID MESOKARP KELAPA SAWIT (Elaeis guineensis Jacq.) TERHADAP KESTABILAN KLOROFIL-A) by Dece Elisabeth Sahertian, Indriatmoko Indriatmoko, Leenawaty Limantara, Tatas Hardo Panintingjati Brotosudarmo

    Published 2019-04-01
    “…Measurement of the absorption spectrum of each treatment was measured using a UV-Vis Spectrophotometer at a wavelength range of 300–800 nm. …”
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    Article
  17. 897

    Self-assembly of Hyaluronic Acid-Cu-Quercetin flavonoid nanoparticles: synergistic chemotherapy to target tumors by Hanxun Yue, Xuan Zhao, Qin Yong, Min Shi, Xiaofeng Jiang, Yating Zhang, Xian Yu

    Published 2023-08-01
    “…XPS revealed that Cu was mainly present as Cu2+ in the HCQ NPs. UV−vis absorption spectrum of the characteristic peak of HCQ NPs was located at 296 nm. …”
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    Article
  18. 898
  19. 899

    An intercomparison of CH3O2 measurements by fluorescence assay by gas expansion and cavity ring-down spectroscopy within HIRAC (Highly Instrumented Reactor for Atmospheric Chemistr... by Onel, L, Brennan, A, Gianella, M, Hooper, J, Ng, N, Hancock, G, Whalley, L, Seakins, PW, Ritchie, GAD, Heard, DE

    Published 2020
    “…Analysis of the second-order kinetic decays of CH3O2 by self-reaction monitored by CRDS has been used for the determination of the CH3O2 absorption cross section at 7487.98 cm−1, both at 100 mbar of air and at 80 mbar of a 3:1 He∕O2 mixture, from which σCH3O2=(1.49±0.19)×10−20 cm2 molecule−1 was determined for both pressures. The absorption spectrum of CH3O2 between 7486 and 7491 cm−1 did not change shape when the total pressure was increased to 1000 mbar, from which we determined that σCH3O2 is independent of pressure over the pressure range 100–1000 mbar in air. …”
    Journal article
  20. 900

    Plasmon-enhanced luminescence of samarium doped sodium tellurite glasses embedded with gold nanoparticles: Judd-Ofelt parameter by Mawlud, S. Q., Ameen, M. M., Sahar, M. R., Ahmed, K. F.

    Published 2017
    “…The homogeneous distribution of spherical and non-spherical Au NPs (average size ~3.36±0.076 nm) in the glassy matrix is evidenced from the transmission electron microscopy (TEM). The absorption spectrum of Sm3+ ions free glass sample containing Au NPs displays a two prominent surface plasmon resonance (SPR) band located at ~550 nm and ~590 nm. …”
    Article