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[en] Manufacturers are aiming for more flexible and lightweight protective clothing to increase wearing comfort. A cardigan with a knitted stab-resistant inlay and an alarm system is presented. The stab-resistant inlay is based on a multilayer ultra-high molecular weight poly ethylene (UHMW-PE) fabric. Stab resistance was evaluated according to the standard of the Association of Test Laboratories for Bullet, Stab or Pike Resistant Materials and Construction Standard (VPAM 2011). Furthermore sensors for the detection of cuts and pressure were integrated. Both sensors can trigger alarms if the wearer is attacked. Normal pressure occurring through leaning on a wall or sitting is filtered out and does not trigger an alarm. (paper)

[en] It has some encouraging results to use ozone in medicine. However, as ozone is usually in gas state, unstable and strong oxidability, it is difficult to be stored and used commonly. Ozone, ethylene, acrylic acid and the ozonic compounds were calculated to study the interaction between ozone and carrier material to form ozonide. The stability of the ozonide, or the bond strength between ozone and ions of carrier are controlled felicitously to release ozone from the ozonide with proper velocity. Ozone antimicrobial has been composed on the above principle. It can be used conveniently, especially for common families. There are some characteristics of ozone antimicrobial or ozone, such as universal applicability, efficiency and rapidity, security, strong penetrability, no drug resistance and sterilization and treatment simultaneity. (paper)

[en] The analysis of isotopic mixtures of but-1-ene is usually performed in microwave spectroscopy by observing rotational transitions of the skew conformers. Microwave studies of the cis conformers of 1,1-d₂-, 1-¹³C- and d₈-but-1-ene allow to determine the geometry of this conformation with a very good accuracy. It follows that transition frequencies of a given isotopic species can be predicted within less than 3 MHz and be used for the isotopic chemical analysis of butene

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[en] Studies of the spectroscopy of vibrationally metastable molecules are briefly described. The research concentrates on two types of molecules, complexes involving ethylene and rare gas atoms bonded to halogen molecules

[en] A technique was suggested to transform ab initio molecular force fields calculated using a set of independent vibrational coordinates into a form corresponding to a complete set of regundand coordinates and reflecting the molecular symmetry. Conditions necessary for the appropriate transformations to be possible are formulated. The possibility of transforming the force field for the simplest fragment containing regundand coordinates was demonstrated using ethylene as an example. (authors)

[en] We report details of manufacturing techniques for producing long-lived carbon foils (thickness range 4 - 24 μg/cm²) by deposition from dc ethylene discharge. We report observations on the behavior of these foils when they are used for spectral and mean-life measurements by the beam-foil method in beams of heavy ions (Br, Xe) in the 2-5 MeV energy range. We also report results of tests to determine foil life as a function of thickness as well as observations on foil shrinkage and scattering of the ion beam. (orig.)

[en] Highlights: • The reactions of H atom with propylene and isobutylene were studied using DFT methods. • The rate coefficients were calculated using CTST coupled with HO, HR and FR models. • Thermodynamic parameters are computed for all the possible channels. • Rate coefficients are useful in modeling the combustion of higher hydrocarbons. - Abstract: The rate coefficients for the reactions of hydrogen (H) atom with propylene and isobutylene were studied at M06-2X/6-31+G(d,p) and MPWB1K/6-31+G(d,p) level of theories between 200 and 2500 K. The possible mechanism for the reactions of propylene and isobutylene with H atom were examined. The rate coefficients for each reaction channels were calculated over a wide range of temperature using Conventional Transition State Theory (CTST). The quantum mechanical tunneling effect was computed using parabolic model and were included in the rate coefficient calculations. The Arrhenius expressions for the reactions, propylene + H and isobutylene + H were estimated to be k_propylene+H = (9.68 ± 0.17) × 10⁻¹⁸ T^2.16exp[−(131 ± 10)/T] cm³ molecule⁻¹ s⁻¹ and k_{isobutylene+H} = (1.40 ± 0.22) × 10⁻¹⁶ T^1.89exp[−(215 ± 12)/T] cm³ molecule⁻¹ s⁻¹, respectively. Theoretically calculated rate coefficients are found to be in good agreement with the available experimentally measured rate coefficients.