Glassy Crystals Low-frequency and Low-temperature Properties a

1986 ◽  
Vol 484 (1) ◽  
pp. 130-149 ◽  
Author(s):  
JAMES P. SETHNA
Keyword(s):  
Low Temperature ◽  
Low Frequency ◽  
Glassy Crystals

Low-frequency single-crystal Raman, far-infrared, and inelastic neutron scattering studies of acetanilide at low temperature

1991 ◽  
Vol 95 (13) ◽  
pp. 5281-5286 ◽  
Author(s):  
Clifford T. Johnston ◽  
Stephen F. Agnew ◽  
Juergen Eckert ◽  
Llewellyn H. Jones ◽  
Basil I. Swanson ◽  
...  
Keyword(s):  
Low Temperature ◽  
Neutron Scattering ◽  
Single Crystal ◽  
Inelastic Neutron Scattering ◽  
Low Frequency ◽  
Far Infrared ◽  
Inelastic Neutron

The 21-cm Line

2013 ◽  
Author(s):  
Abraham Loeb ◽  
Steven R. Furlanetto
Keyword(s):  
Low Temperature ◽  
Cosmic Microwave Background ◽  
Optical Depth ◽  
Intergalactic Medium ◽  
Transition Energy ◽  
Low Frequency ◽  
Hyperfine Line ◽  
Microwave Background ◽  
Spin Flip ◽  
Line P

This chapter describes how the 21-cm line is used to study the high-z Universe. It introduces the spin-flip or the hyperfine line—a transition driven by the interaction of the spins of the proton and electron, whose relative directions affect the energy of the electron's orbit. An atom in the upper state eventually undergoes a spin-flip transition, emitting a photon with a wavelength of 21 cm. As the chapter shows, this transition is extremely weak, so the effective intergalactic medium (IGM) optical depth is only of the order of 1 percent: this makes the entire neutral IGM accessible during the cosmic dawn. Moreover, the transition energy is so low that it provides a sensitive thermometer of the low-temperature IGM, and as a low-frequency radio transition, it can be seen across the entirety of the IGM against the cosmic microwave background.

Low-frequency Raman spectra of a glass-forming ionic liquid at low temperature and high pressure

2019 ◽  
Vol 150 (16) ◽  
pp. 164502 ◽  
Author(s):  
Thamires A. Lima ◽  
Mauro C. C. Ribeiro
Keyword(s):  
High Pressure ◽  
Ionic Liquid ◽  
Low Temperature ◽  
Raman Spectra ◽  
Low Frequency ◽  
Glass Forming

scholarly journals Structure and Physicochemical Properties of Water Treated under Methane with Low-Temperature Glow Plasma of Low Frequency

Water ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1638 ◽  
Author(s):  
Aleksandra Ciesielska ◽  
Wojciech Ciesielski ◽  
Karen Khachatryan ◽  
Henryk Koloczek ◽  
Damian Kulawik ◽  
...  
Keyword(s):  
Low Temperature ◽  
Physicochemical Properties ◽  
Treatment Time ◽  
Low Frequency ◽  
Aqueous Solubility ◽  
Physicochemical Characteristics ◽  
Scanning Calorimetry ◽  
Spin Resonance ◽  
Reflectance Ftir ◽  
Glow Plasma

Our former studies delivered a strong evidence that water indirectly treated with low-temperature, low-pressure glow plasma of low frequency (GP) changed its structure depending on the atmosphere in which such treatment was performed (air, ammonia, and nitrogen) and on the time of the treatment (0 to 120 min). In every case, water of different physicochemical characteristics and interesting biological functions was produced. Therefore, the relevant studies were extended to treating deionized water with GP under methane. The resulting samples were characterized by means of ultraviolet/visible (UV/VIS), Fourier transformation infrared-attenuated total reflectance (FTIR-ATR), electron spin resonance (ESR) and Raman spectroscopies, differential scanning calorimetry (DSC), thermogravimetry, pH, conductivity, and refractive index. The generated samples of water had entirely different physicochemical properties from those recorded for water treated with GP in the air and under both ammonia and nitrogen. The treatment of water with GP under methane did not produce clathrates hosting methane molecules. Thermogravimetry delivered an evidence that the treatment with GP increased the aqueous solubility of methane. That solubility non-linearly changed against the treatment time.

scholarly journals Low Frequency and Low Temperature Behavior of Si, Solar Cell by AC Impedance Measurements

2012 ◽  
Vol 19 ◽  
pp. 183-191 ◽  
Author(s):  
K. Al Abdullah ◽  
Faisal Al Alloush ◽  
M.J. Termanini ◽  
C. Salame
Keyword(s):  
Solar Cell ◽  
Low Temperature ◽  
Low Frequency ◽  
Ac Impedance ◽  
Temperature Behavior ◽  
Impedance Measurements ◽  
Si Solar Cell

scholarly journals Cultivation of Cress Involving Water Treated Under Different Atmospheres with Low-Temperature, Low-Pressure Glow Plasma of Low Frequency

Water ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 2152
Author(s):  
Katarzyna Ciesielska ◽  
Wojciech Ciesielski ◽  
Damian Kulawik ◽  
Zdzisław Oszczęda ◽  
Piotr Tomasik
Keyword(s):  
Ascorbic Acid ◽  
Low Temperature ◽  
Chlorophyll Content ◽  
Tap Water ◽  
Low Frequency ◽  
Low Pressure ◽  
Total Chlorophyll ◽  
Total Chlorophyll Content ◽  
Glow Plasma ◽  
Water Saturated

Watering cress with tap water treated for 30 min with low-temperature, low-pressure glow plasma of low frequency (LPGP) in the air (LPGPA), saturated with either nitrogen (LPGPN), CO2 (LPGPC) or methane (LPGPM), promoted the yield of crops. Their efficiency increased in the order LPGPA < LPGPN < LPGPM < LPGPC. The kind of water prior and after the treatment specifically influenced the fat and protein content in the watered cress and had no effect on the carbohydrate content. Watering cress with water saturated with N2 and CO2 slightly increased the total chlorophyll content, whereas watering with water saturated with CH4 significantly decreased it. Watering with plasma-treated water always resulted in an increase in the total chlorophyll content and subtly influenced the content of carotenoids and ascorbic acid. Watering cress with water saturated with particular gases influenced the bioaccumulation of cations and anions.

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