نتایج جستجو برای: 1270

تعداد نتایج: 876  

Journal: :The American Historical Review 1975

Journal: :Photochemistry and photobiology 2002
Mark Niedre Michael S Patterson Brian C Wilson

Singlet oxygen (1O2) is believed to be the major cytotoxic agent involved in photodynamic therapy (PDT). Measurement of 1O2 near-infrared (NIR) luminescence at 1270 nm in biological environments is confounded by the strongly reduced 1O2 lifetime and probably has never been achieved. We present evidence that this is now possible, using a new NIR-sensitive photomultiplier tube. Time-resolved 1O2 ...

2008
Naruhisa Takato

(1270) Datura is the largest member of a very young asteroid cluster that was thought to be broken-up 0.45 Myr ago. The light-curve and the rotationresolved reflectance spectra (0.6 μm – 1.0 μm) were observed in order to find “fresh” surface. Our data show no significant spectral variation along the rotation phase. The depth of the 0.95 μm absorption band, which indicates the degree of space we...

Journal: :Chemical communications 2016
Jie-Ping Wan Yunfang Lin Xiaoji Cao Yunyun Liu Li Wei

Correction for 'Copper-catalyzed, hypervalent iodine mediated C=C bond activation of enaminones for the synthesis of α-keto amides' by Jie-Ping Wan et al., Chem. Commun., 2016, 52, 1270-1273.

2003
Hai-Yang Cheng

Cabibbo-allowed charmed meson decays into a pseudoscalar meson and an axial-vector meson are studied. The charm to axial-vector meson transition form factors are evaluated in the Isgur-Scora-Grinstein-Wise quark model. The dipole momentum dependence of the D → K transition form factor and the presence of a sizable long-distance W -exchange are the two key ingredients for understanding the data ...

Journal: :Physical Review Letters 2021

Using 2.93 fb$^{-1}$ of $e^+e^-$ collision data taken with the BESIII detector at a center-of-mass energy 3.773 $\rm \,GeV$, observation $D^0\to K_1(1270)^- e^+\nu_e$ semileptonic decay is presented. The statistical significance greater than $10\sigma$. branching fraction measured to be $(1.09\pm0.13^{+0.09}_{-0.16} \pm 0.12)\times10^{-3}$. Here, first uncertainty statistical, second systematic...

Journal: :Physical Review Letters 2021

Using 2.93 fb$^{-1}$ of $e^+e^-$ collision data taken with the BESIII detector at a center-of-mass energy 3.773 $\rm \,GeV$, observation $D^0\to K_1(1270)^- e^+\nu_e$ semileptonic decay is presented. The statistical significance greater than $10\sigma$. branching fraction measured to be $(1.09\pm0.13^{+0.09}_{-0.16} \pm 0.12)\times10^{-3}$. Here, first uncertainty statistical, second systematic...

Journal: :Sensors 2018
Yantao Liu Wei Ren Peng Shi Dan Liu Yijun Zhang Ming Liu Zuo-Guang Ye Weixuan Jing Bian Tian Zhuangde Jiang

An In₂O₃/ITO thin film thermocouple was prepared via screen printing. Glass additives were added to improve the sintering process and to increase the density of the In₂O₃/ITO films. The surface and cross-sectional images indicate that both the grain size and densification of the ITO and In₂O₃ films increased with the increase in annealing time. The thermoelectric voltage of the In₂O₃/ITO thermo...

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