Development of Automated Velocity Measurement Method in Natural Rivers

Source: ICHE Conference Archive - https://mdi-de.baw.de/icheArchive

Measurements of Vegetation Distribution Using Various Local Remote Sensing Techniques

Source: ICHE Conference Archive - https://mdi-de.baw.de/icheArchiv

Local structural analyses on molten terbium fluoride in lithium fluoride and lithium–calcium fluoride mixtures

X-ray absorption fine structure (XAFS) measurements on terbium fluoride in molten lithium fluoride and in molten lithium–calcium fluoride mixtures, (e.g. 0.20TbF3–0.80LiF, 0.20TbF3–0.62LiF–0.18CaF2, 0.20TbF3–0.48LiF–0.32CaF2, 0.50TbF3–0.50LiF, and 0.50TbF3–0.38LiF–0.12CaF2), have been carried out. In the solid state, coordination number of terbium (Ni) and inter ionic distances between terbium and fluorine in the first neighbor (ri) are nearly constant in all mixtures. In 0.20TbF3–0.80LiF, 0.20TbF3–0.62LiF–0.18CaF2 and 0.50TbF3–0.50LiF mixtures, Ni's decrease from ca. 8 to 6 and ri's also decrease from ca. 2.29 to 2.26 Å on melting. On the other hands, in molten 0.20TbF3–0.48LiF–0.32CaF2 and 0.50TbF3–0.38LiF–0.12CaF2 mixtures, Ni's are slightly larger than 6 and ri's do not change. These facts correspond to the amount of F− supplied by solvent melts, i.e. the effect of CaF2 becomes predominant at bCaF2 > 0.32 in ternary 0.20TbF3–aLiF–bCaF2 mixtures and at bCaF2 > 0.12 in ternary 0.50TbF3–aLiF–bCaF2 mixtures

Royal Jelly Prevents Osteoporosis in Rats: Beneficial Effects in Ovariectomy Model and in Bone Tissue Culture Model

Royal jelly (RJ) has been used worldwide for many years as medical products, health foods and cosmetics. Since RJ contains testosterone and has steroid hormone-type activities, we hypothesized that it may have beneficial effects on osteoporosis. We used both an ovariectomized rat model and a tissue culture model. Rats were divided into eight groups as follows: sham-operated (Sham), ovariectomized (OVX), OVX given 0.5% (w/w) raw RJ, OVX given 2.0% (w/w) RJ, OVX given 0.5% (w/w) protease-treated RJ (pRJ), OVX given 2.0% (w/w) pRJ, OVX given 17β-estradiol and OVX given its vehicle, respectively. The Ovariectomy decreased tibial bone mineral density (BMD) by 24%. Administration of 17β-estradiol to OVX rats recovered the tibial BMD decrease by 100%. Administration of 2.0% (w/w) RJ and 0.5–2.0% (w/w) pRJ to OVX rats recovered it by 85% or more. These results indicate that both RJ and pRJ are almost as effective as 17β-estradiol in preventing the development of bone loss induced by ovariectomy in rats. In tissue culture models, both RJ and pRJ increased calcium contents in femoral-diaphyseal and femoral-metaphyseal tissue cultures obtained from normal male rats. However, in a mouse marrow culture model, they neither inhibited the parathyroid hormone (PTH)-induced calcium loss nor affected the formation of osteoclast-like cells induced by PTH in mouse marrow culture system. Therefore, our results suggest that both RJ and pRJ may prevent osteoporosis by enhancing intestinal calcium absorption, but not by directly antagonizing the action of PTH

Superconducting Properties of Metastable bcc Solid Solution in Melt-quenched Zr-Ge Binary Alloys

Superconducting metastable bcc phase has been found in rapidly quenched Zr-Ge binary alloys in a composition range 9 to 12 at% Ge. With decreasing germanium content, the T_c value of the bcc alloys increased from 3.30 to 3.88 K, while the H_ gradient at T_c, -(dH_/dT)_, and the electrical resistivity at 4.2 K, ρ_n, decreased from 1.86×10^6 to 1.79×10^6 Am^ K^ and 2.00 to 1.70 μΩm, respectively. There existed a strong correlation between ρ_n, T_c and -(dH_/dT)_; with increasing ρ_n, T_c decreased and - (dH_/dT)_ increased. A correlation between the temperature coefficient of resistivity (TCR), 1/ρ_ (dρ/dT) and T_c was also found ; the larger the TCR the higher is the T_c. The existence of such correlations was inferred to originate from the close relation between the electron-phonon coupling constant λ and ρ_n or TCR. The electronic dressed density of states at the Fermi level N(E_f) (1+λ) was calculated from the experimentally measured values of -(dH_/dT)_ and ρ_n by using theories for strong-coupling superconductors. It was found that the values of N(E_f)(1+λ) significantly reflect T_c. The GL parameter k and the GL coherence length ζ_(0) were estimated to be 69-79 and about 7.5 nm, respectively, from the experimental values of -(dH_/dT)_ and σ_n. The metastable bcc Zr-Ge alloys are concluded to be extremely "dirty" type-II superconductors

Structure of the inhibitor complex of old yellow enzyme from Trypanosoma cruzi

The structures of old yellow enzyme from Trypanosoma cruzi which produces prostaglandin F2α from PGH2 have been determined in the presence or absence of menadione

Algorithms and Arithmetic Operators for Computing the ηT\eta_T Pairing in Characteristic Three

Since their introduction in constructive cryptographic applications, pairings over (hyper)elliptic curves are at the heart of an ever increasing number of protocols. Software implementations being rather slow, the study of hardware architectures became an active research area. In this paper, we discuss several algorithms to compute the $\eta_T$ pairing in characteristic three and suggest further improvements. These algorithms involve addition, multiplication, cubing, inversion, and sometimes cube root extraction over $\mathbb{F}_{3^m}$. We propose a hardware accelerator based on a unified arithmetic operator able to perform the operations required by a given algorithm. We describe the implementation of a compact coprocessor for the field $\mathbb{F}_{3^{97}}$ given by $\mathbb{F}_3[x]/(x^{97}+x^{12}+2)$, which compares favorably with other solutions described in the open literature