We have produced and investigated an unique boron oxide cluster, B4O2(-), using photoelectron spectroscopy and ab initio calculations. Relatively simple and highly vibrationally resolved PES spectra were obtained at two photon energies (355 and 193 nm). The electron affinity of neutral B4O2 was measured to be 3.160 +/- 0.015 eV. Two excited states were observed for B4O2 at excitation energies o...

background:  wi-fi allows electronic devices such as laptops to exchange data or connect to a network resource. the main goal of this study was to assess the bioeffects of short term exposure to 2.4 ghz microwave radiation emitted from a common wi-fi router on sperm quality. materials and methods: male wistar rats were divided into 7 groups; i, sham exposed 4 h/day for 7days at 30 cm from the r...

The pathway of dehydration and intramolecular cyclization of lisinopril dihydrate in the solid state was investigated using differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and a combination of thermal analyzer with Fourier transform infrared microspectroscopy (thermal FT-IR microscopic system). The results indicate that the dehydration from the solid-state lisinopril d...

acetylation is a chemical modification of wood to enhance its properties. ir-spectroscopy is a useful technique for proofing chemical bondings in wood and the at-tenuated total reflection (atr) infrared spectroscopy technique was applied as an eas-ier technique over other ir-spectroscopies. in this research, different degrees of acetyla-tion, weight percentage gains (wpgs) in beech and pine min...

T. Janda3, W. Wiessnerb, E. Páldic, D. Mendeb, and S. Demeter3 a Institute o f Plant Physiology, Biological Research Center, Hungarian Academy o f Sciences, P.O.B. 521, H-6701 Szeged, Hungary b Pflanzenphysiologisches Institut der Universität Göttingen, Untere Karspüle 2, D-W -3400 Göttingen, Bundesrepublik Deutschland c Agricultural Research Institute o f the Hungarian Academy o f Sciences, H-...

A prototype, no-moving-parts, plane array infrared spectrograph (PA-IR) capable of routine spectral acquisition in the 3400 to 2000 cm21 region has been constructed. The instrument includes a continuous source, Czerney–Turner type monochromator system and an infrared camera that incorporates a 320 3 256 pixel InSb focal plane array detector cooled with liquid nitrogen. PA-IR spectra (;3400 to 2...

Indoleamine 2,3-dioxygenase is a heme enzyme that catalyzes the oxidative degradation of L-Trp and other indoleamines. We have used resonance Raman spectroscopy to characterize the heme environment of purified recombinant human indoleamine 2,3-dioxygenase (hIDO). In the absence of L-Trp, the spectrum of the Fe(3+) form displayed six-coordinate, mixed high and low spin character. Addition of L-T...

This study measured the immediate and 24 h shear (SBS) and micro-shear bond strengths (MSBS) to dentin of four self-etching adhesives. A resin composite was bonded using each adhesive to the area of 5-mm diameter for SBS test or 0.75-mm diameter for MSBS test of flat bovine dentin. The bond strengths of all adhesives at 10 min were lower than at 24 h for both tests. The mean SBS (MPa, 10 min, 2...

2014 We show the evolutions with temperature of the first moments of the 03BDs bands (O-H... O or O-D... O) of adipic acid crystals and we establish theoretical relations giving the values of these first moments with the general assumption that the 03BDs vibration of a single H-bond is strongly coupled to the 03BD03C3 vibration (O-H ... O) of the same bond and is also coupled to binary combinat...

Background and Aim: Recurrent caries and low bond strength are the main causes of composite restorations failure. This study sought to assess the effect of chlorhexidine (CHX) on micro-shear bond strength (MSBS) to dentin of a fourth generation adhesive system and a universal bonding agent after aging. Materials and Methods: This in vitro study used 32 extracted third molars and 3-5mm thick de...