نتایج جستجو برای: پرتوهای uv و ir

تعداد نتایج: 886895  

2008
Daniel Robbins

We consider scalar field theory with space and space-time-dependent non-commutativity. In perturbation theory, we find that the structure of the UV/IR mixing is quite different from cases with constant non-commutativity. In particular, UV/IR mixing becomes intertwined in an interesting way with violations of momentum conservation. email: [email protected] email: [email protected]

2009
V. Buat T. T. Takeuchi K. L. Murata

Aims. We want to study the IR (> 8 μm) emission of samples of galaxies selected in their rest-frame UV in a very homogeneous way (wavelength and luminosity) from z = 0 to z = 1: comparing their UV and IR rest-frame emissions will allow us to study the evolution of dust attenuation with z as well as to check if a UV selection is able to track all the star formation. This UV selection will also b...

2006
C K Xu V Buat

This is a review talk on the UV and infrared selected galaxies. The central question addressed is: do UV and infrared surveys see the 2 sides of star formation of the same population, or star formation of 2 different populations? We first review the literature on the UV and IR selected galaxy samples, try to quantify the difference and overlaps between these two populations of star forming gala...

با توجه به سوراخ شدن لایه ازن وافزایش پرتوهای فرابنفش ونظر به اثرات زیانبار این پرتوها بر گیاهان، در بررسی حاضر به مطالعه تاثیر پرتوهای فرابنفش حاصل از لامپ 40 وات uv بر کمیت و کیفیت اسانس اندامهای مختلف گیاه رازیانه در مراحل مختلف رویشی ودر شرایط مزرعه ای پرداخته شد. گیاه رازیانه از تیره چتریان و از جمله گیاهان دارویی ارزنده ای است که در صنایع داروسازی، عطرسازی، صنایع آرایشی وبهداشتی وصنایع غذ...

2015
Ryoji Kusaka Yoshiya Inokuchi Takayuki Ebata

The conformation of benzo-18-crown-6-ether (B18C6) and its water encapsulation in a supersonic beam are investigated by laser-induced fluorescence (LIF), UV-UV hole-burning, IR-UV double-resonance (IR-UV DR), and resonance-enhanced multiphoton ionization (REMPI) spectroscopy with the aid of density functional theory (DFT) calculations at the B3LYP/6-31+G* level. At least four B18C6 conformers a...

Journal: :Physical chemistry chemical physics : PCCP 2009
Ryoji Kusaka Yoshiya Inokuchi Takayuki Ebata

The conformation of benzo-18-crown-6-ether (B18C6) and its encapsulation of water molecules in a supersonic beam are investigated by laser induced fluorescence (LIF), UV-UV hole-burning, IR-UV double resonance (IR-UV DR), and resonance-enhanced multiphoton ionization (REMPI) spectroscopy with the aid of density functional theory (DFT) calculations at the B3LYP/6-31+G* level. At least four B18C6...

Journal: :The Journal of biological chemistry 2003
Pia Roos-Mattjus Kevin M Hopkins Andrea J Oestreich Benjamin T Vroman Kenneth L Johnson Stephen Naylor Howard B Lieberman Larry M Karnitz

Rad9, a key component of genotoxin-activated checkpoint signaling pathways, associates with Hus1 and Rad1 in a heterotrimeric complex (the 9-1-1 complex). Rad9 is inducibly and constitutively phosphorylated. However, the role of Rad9 phosphorylation is unknown. Here we identified nine phosphorylation sites, all of which lie in the carboxyl-terminal 119-amino acid Rad9 tail and examined the role...

Journal: :The journal of physical chemistry. B 2013
Jan Thøgersen Julien Réhault Michael Odelius Tom Ogden Naresh K Jena Svend J Knak Jensen Søren R Keiding Jan Helbing

Aqueous nitrate, NO3(-)(aq), was studied by 2D-IR, UV-IR, and UV-UV time-resolved spectroscopies in combination with molecular dynamics (MD) simulations with the purpose of determining the hydration dynamics around the anion. In water, the D3h symmetry of NO3(-) is broken, and the degeneracy of the asymmetric-stretch modes is lifted. This provides a very sensitive probe of the ion-water interac...

Journal: :International Journal of Modern Physics D 2008

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