The cosmic microwave background anisotropy is sensitive to the slope and amplitude of primordial energy density and gravitational wave fluctuations, the baryon density, the Hubble constant, the cosmological constant, the ionization history, etc. In this Letter, we examine the degree to which these factors can be separately resolved from combined smalland large-angular scale anisotropy observati...

The technique used previously to observe complex formation between bacitracin, Mg++, and Ca5-isoprenyl pyrophosphate has been employed to measure association constants. The constant for the bacitracin A, Mg++, C55-isoprenyl pyrophosphate complex was lo6 M-I. The binding constants for other bacitracin peptides were lower and correlated with their antibiotic activities. &farnesyl pyrophosphate al...

Forthcoming cosmic microwave background experiments (CMB) will provide precise new tests of structure-formation theories. The geometry of the Universe may be determined robustly, and the classical cosmological parameters, such as the cosmological constant, baryon density, and Hubble constant, may be determined as well. In addition, the “inflationary observables,” which parameterize the shapes a...

A physical situation is proposed and theoretically analyzed, in which, our opinion, it possible to generate unipolar terahertz pulses with a large electric area. In this case, the gas tube excited by femtosecond IR laser pulse. placed constant external field. The generation of pulse based on "three-step scheme" --- ionization atoms pulse, subsequent acceleration free electron ...

[1] We have analyzed a brief period of same‐day observations of the Martian ionosphere using data obtained in December 2004 from the Mars Global Surveyor (MGS) and Mars Express (MEX) radio occultation experiments. These data were taken shortly after sunrise under solstice conditions in both hemispheres, with MGS in the summer (northern) hemisphere at high latitudes while MEX was in the winter (...

The development of visible emissions from an exploding mercury jet, which could be used as a unique high current opening switch, have been detailed. Framing pictures have verified that the expanding luminous front produced by the exploding jet maintains its cylindrical symmetry throughout the most intense period of visible emission. The luminous front expands at a constant rate of 5 x lo3 m/s o...

Using UV-visible spectrophotometric data of (1:1), electron donor-acceptor complexes (AD1, AD2 and AD3) have been investigated. The complexes concerned are n-butyl amine (D1) and cyclohexyl amine (D2) and phenyl hydrazine (D3) as electron donors with iron (III) ion as an electron acceptor (A) in methanol at 25°C. The values of formation constant (kAD), molar extinction coefficient (eAD), and ab...

We study electron emission and sputtering during irradiation of amorphous water ice at 60 K by HC, DC, He+, Li+, Be+, B+, C+, N+, O+, F+, and Ne+ ions in the energy range from 10 to 100 keV. We find that for constant velocity (5 keV/amu) ions the dependence of the sputtering yields with projectile atomic number Z is proportional to the square of the Z-dependence of the electronic stopping power...

A lightweight, compact gas standards generator for permeation tubes is described. This system provides reliable temperature control during periods of intermittent power and is ideal for field measurements. A eutectic alloy with a high heat of fusion is used as a phase change material. This thermal source allows the system to maintain a constant permeation tube temperature of 46.6 °C for over 5 ...