Morphological investigations

In this article we have reviewed the results of a joint spectroscopic and morphological investigation of -sexilhienyl (T(J. The lowest singlet electronic level, which is assigned to I B , splits in the single crystal into four crystalline levels. The structure of the exciton band is investigated by the combined absorption and... 

El Samahy MH, Ghoz MM, Ramzy N (1998) Morphological investigation of chemical peel on photodamaged facial skin Int J Cos Sci 20 269-282... 

Mechanical transduction depends on activation of ion channels linked to extracellular and intracellular structures. A comprehensive model for hair-cell transduction has emerged, derived primarily from biophysical and morphological investigations. Residing in the mechanore-ceptive organelle of a hair cell, the hair bundle, the transduction apparatus consists of at least three components the transduction channel, a mechanically gated ion channel the tip link, an extracellular filament that transmits force to the channel s gate and the adaptation motor,... 

A controversy has arisen as to whether the observations by POM and those by transmission electron microscopy reflect the same morphological features or not. In fact, Kim et al. [125] demonstrated that the same block copolymer can exhibit different morphologies depending on sample thickness, this being a possible reason for the sometimes contradictory results found in several works. Nevertheless, before this aspect can be properly treated in this section, we present a review of the morphological investigations carried out in semicrystalline ABC triblock copolymers at a nanoscopic scale. 

Scanning electron microscopy (SEM) seems to have been used only scarcely for the characterization of solid lipid-based nanoparticles [104], This method, however, is routinely applied for the morphological investigation of solid hpid microparticles (e.g., to smdy their shape and surface structure also with respect to alterations in contact with release media) [24,38,39,41,42,80,105]. For investigation, the microparticles are usually dried, and their surface has to be coated with a conductive layer, commonly by sputtering with gold. Unlike TEM, in SEM the specimen is scanned point by point with the electron beam, and secondary electrons that are emitted by the sample surface on irradiation with the electron beam are detected. In this way, a three-dimensional impression of the structures in the sample, or of their surface, respectively, is obtained. 

Morphological investigations and comparisons with block copolymers are in progress to gain further understanding of the radiation protection of silicone elastomers. 

Hohling, H. J., Schopfer, H. Morphological investigations of apatite nucleation in hard tissues and salvary stone. Naturwissenschaften 55, 545 (1968)... 

Morphological investigations have shown that l-(chloromethyl)- and 1-ethoxy-silatranes produce the greatest effect of all the studied compounds. 

Klaveness, D. Coccolithus huxleyi (Lohmann) Kamptner. I. Morphological investigations on the vegetative cell and the process of coccolith formation. Protistologica 8, 335 346 (1972). 

Transmission electron microscopy (TEM) has traditionally been the mainstay of morphological investigations of polyolefins [8], but recent developments in low voltage high-resolution field emission gun scanning electron microscopy (FEG-SEM) [9] and the advent of atomic force microscopy (AFM) and related near-field techniques [10] have challenged its dominance at the length scales of the order of 10 nm, characteristic of both microdeformation (cavitation, fibrils) and structural components of semicrystalline... 

The morphological investigation of a three miktoarm star terpolymer was first reported by Hadjichristidis et al. [81]. A SIB miktoarm star with MWs of the arms PS 20.7 K/PI 15.6 K/PBd 12.2 K and a volume fraction of PS equal to 0.4 formed PS cylinders in a polydiene matrix. Due to the low molecular weights the polydiene arms formed one phase. The cylinders are in contrast to the lamellae expected for diblock copolymers but the behavior is analogous to the behavior of I2S and S2I miktoarm stars of the same composition. 

Prepared by the LB Technique and Donor Doping Molecular Orientation and Structure and Morphology Investigated by Infrared Spectroscopy, X-ray Diffraction, and AFM... 

Further morphological investigations by TEM are performed on ultra-thin cuts ( 80 nm). By making use of energy filters (ESI), the inelastically scattered electrons can be removed. The micrographs provided by the elastically scattered electrons only show a good contrast based on the differences in carbon densities in the phases under consideration. 

P. globosa Scherffel (Scherffel 1900) forms globular colonies with the cells evenly distributed throughout the colony (Fig. 5b). Molecular data and DNA content suggest that this is a complex of up to three or four cryptic species, but to date no morphological investigations exist to support this. 

All results have to be described in detail with regard to body weight development, feed consumption, symptoms of intoxication and morphological investigation. In case the results allow for a statistical evaluation adequate methods exist (FDA 1996). 

Luccio TD, Antolini F, Aversa P, Scalia G, Tapfer L (2004) Structural and morphological investigation of Langmuir-Blodgett SWCNT/behenic acid multilayers. Cairbon 42 1119-1122... 

Hohen ger, M., Zeitlhofer, J. Clinical and morphological investigations regarding hver changes in early summer meningoencephahtis. Wien. Zschr. Inn. Med. 1965 46 486 - 492... 

As mentioned above, PEE, is well characterized mainly by SAXS in the deformation regime under consideration (Fakirov et al, 1991, 1992, 1993, 1994 Stribeck et al., 1997). In addition to these morphological investigations a study of the strain-induced polymorphic transition in PEE using microhardness measurement will shed additional light on the stress- and strain-induced structural reorganization of this new class of polymeric materials. 

This system is also characterized by a strong Me-S interaction and a significant positive Me-S lattice misfit (do.Ti > do.Ag)- At low AiS Ag(lOO) and (111) substrates are modified by compressed 2D hep Tlads overlayers, which are higher order commensurate and incommensurate, respectively (cf. Section 3.4). UPD-OPD transition experiments and morphological investigations in the system Ag(M0/Tl, ... 

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