scholarly journals Light-scattering signal may indicate critical time zone to rescue brain tissue after hypoxia

2011 ◽  
Vol 16 (2) ◽  
pp. 027002 ◽  
Author(s):  
Satoko Kawauchi ◽  
Shunichi Sato ◽  
Yoichi Uozumi ◽  
Hiroshi Nawashiro ◽  
Miya Ishihara ◽  
...  
Keyword(s):  
Light Scattering ◽  
Brain Tissue ◽  
Critical Time ◽  
Time Zone ◽  
Scattering Signal

Correlation between light scattering signal and tissue reversibility in rat brain exposed to hypoxia

2010 ◽  
Author(s):  
Satoko Kawauchi ◽  
Shunichi Sato ◽  
Yoichi Uozumi ◽  
Hiroshi Nawashiro ◽  
Miya Ishihara ◽  
...  
Keyword(s):  
Light Scattering ◽  
Rat Brain ◽  
Scattering Signal

Realistic Modeling of Optogenetic Neuronal Excitation in Light-Scattering Brain Tissue

2016 ◽  
Author(s):  
Guy Yona ◽  
Yonatan Weissler ◽  
Nizan Meitav ◽  
Eliran Guzi ◽  
Dalia Rifold ◽  
...  
Keyword(s):  
Light Scattering ◽  
Brain Tissue ◽  
Neuronal Excitation ◽  
Realistic Modeling

Reappearance of slow mode in mixtures of polyethylene glycol and poly(sodium methacrylate)

Soft Matter ◽  
2018 ◽  
Vol 14 (24) ◽  
pp. 5039-5047
Author(s):  
Ksenija Kogej ◽  
Jaka Štirn ◽  
Jurij Reščič
Keyword(s):  
Polyethylene Glycol ◽  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Ethylene Glycol ◽  
Slow Mode ◽  
Poly Ethylene Glycol ◽  
Poly Ethylene ◽  
Scattering Signal ◽  
Sodium Methacrylate

After addition of poly(ethylene glycol) to a solution of poly(sodium methacrylate), the slow-mode dynamic light scattering signal reappears.

Enhancement of Brillouin light scattering signal with anti-reflection layers on magnetic thin films

2020 ◽  
Vol 502 ◽  
pp. 166565
Author(s):  
Jinyong Jung ◽  
June-Seo Kim ◽  
Joonwoo Kim ◽  
Jaehun Cho ◽  
Chun-Yeol You
Keyword(s):  
Thin Films ◽  
Light Scattering ◽  
Magnetic Thin Films ◽  
Brillouin Light Scattering ◽  
Scattering Signal

Simulation of dynamic light scattering signal for ultrafine particles based on the exponential model

2010 ◽  
Vol 6 (4) ◽  
pp. 302-305 ◽  
Author(s):  
Ya-jing Wang ◽  
Gang Zheng ◽  
Jin Shen ◽  
Wei Liu ◽  
Xin-jun Zhu
Keyword(s):  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Ultrafine Particles ◽  
Exponential Model ◽  
Scattering Signal

Spectroscopic studies of aggregation behavior of meso-tetra(4-hydroxyphenyl)porphyrin in aqueous AOT solution

2008 ◽  
Vol 12 (02) ◽  
pp. 101-108 ◽  
Author(s):  
Hongmin Ma ◽  
Shuting Sun ◽  
Xin Chen ◽  
Dan Wu ◽  
Peihua Zhu ◽  
...  
Keyword(s):  
Surface Tension ◽  
Light Scattering ◽  
Aqueous Solutions ◽  
Absorption Spectroscopy ◽  
Fluorescence Anisotropy ◽  
Soret Band ◽  
Spectroscopic Studies ◽  
Resonance Light Scattering ◽  
Scattering Signal ◽  
Resonance Light Scattering Technique

The interactions of two amphiphilic porphyrins with anionic surfactant sodium bis(2-ethylhexyl)sulfosuccinate (AOT) in aqueous solutions were studied by UV-vis absorption spectroscopy, fluorescence spectroscopy, resonance light scattering technique, fluorescence anisotropy and surface tension measurements. The two porphyrins, meso-tetra(4-hydroxyphenyl)porphyrin (THPP) and meso-tetra(3,5-dibromo-4-hydroxylphenyl)porphyrin (T(DBHP)P), exist as irregular aggregates in aqueous solutions with a broad and low absorption peak near the maximum of monomer peak. The interaction of THPP with AOT leads to the formation of a fluorescent aggregate of porphyrin which was assigned as J-type aggregate according to exciton theory. A long red-shifted Soret band together with a new strong Q-band, a broad emission peak and a sharply peaked resonance light scattering signal are observed for this J-aggregate. The formation of J-aggregate is independent of the initial THPP concentration and can be influenced greatly by ionic strength. The aggregation kinetics has been investigated by UV-vis absorption spectroscopy and fluorescence anisotropy. Conversion of the porphyrin monomers to J-aggregate is observed. The addition of THPP increases the surface tension of solution and changes the critical micelle concentration of AOT. J-aggregate was not observed for T(DBHP)P in AOT solutions which only shows solubilization. The mechanism of aggregation was discussed.

Investigation of Light Scattering for Normalization of Signals in Laser Ablation Inductively Coupled Plasma Mass Spectrometry

1998 ◽  
Vol 52 (1) ◽  
pp. 154-160 ◽  
Author(s):  
S. A. Baker ◽  
B. W. Smith ◽  
J. D. Winefordner
Keyword(s):  
Mass Spectrometry ◽  
Light Scattering ◽  
Laser Ablation ◽  
Inductively Coupled Plasma ◽  
Internal Standard ◽  
Particle Sizes ◽  
Inductively Coupled ◽  
Plasma Mass Spectrometry ◽  
Scattering Signal ◽  
Ablated Mass

Light scattering is evaluated for normalizing signals in laser ablation inductively coupled plasma mass spectrometry. The scattering signal produced from the transported ablation aerosol is measured with a laboratory-constructed cell. The technique is used to account for variations in the ablated mass within a matrix as well as between matrices. Matrices that are studied include brass, glass, soil, and Macor® ceramic. It is demonstrated that the technique is useful for normalizing analyte signals within a matrix; however, it is not as effective as the use of an internal standard in terms of the precision obtained. The utility of the technique to normalize between matrices is studied for glass, Macor®, and soil. The results indicate that light scattering is useful provided that the particle sizes generated are sufficiently similar.

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