Search results for "Lips"

Facial analysis using a new clinical device: The Kattan Facio-meter.

2018

Background The aim of the study was to attempt to set average faciometric standards for Egyptians using the Kattan Facio-meter. Material and Methods The sample consisted of 180 faculty students with age range 17-25 years. It was divided into three groups; Angle Class I, II and III. Class II was further subdivided into divisions 1 and 2. Linear and angular facial measurements in relation to K plane were taken using the Kattan facio-meter. The measurements were correlated to Angle's classification and between genders. Results On comparing the different classes, Class II division 1 showed the statistically highest mean value for Orbitale-soft tissue A; p=0.042, Class II divisions 1 and 2 for O…

Persistent lipsticks and their lip prints: new hidden evidence at the crime scene

2000

Latent lip print test results produced by permanent lipsticks are presented in this work. This cosmetic product, contrary to conventional lipsticks, does not leave visible prints and can thus be overlooked at the crime scene. As print vehicles the study used ceramics, glass, cotton fabric and paper. Lip prints were left to dwell for different periods and were later developed using aluminum powder, cobalt oxide powder and magnetic powder. The results show that identifiable lip prints can be obtained up to 30 days after being produced.

Analītiskā ģeometrija plaknē

1947

Solid-solid phase transition in hard ellipsoids

2009

We present a computer simulation study of the crystalline phases of hard ellipsoids of revolution. A previous study [P. Pfleiderer and T. Schilling, Phys. Rev. E 75, 020402 (2007)]. showed that for aspect ratios a/bor=3 the previously suggested stretched-fcc phase [D. Frenkel and B. Mulder, Mol. Phys. 55, 1171 (1985)] is unstable with respect to a simple monoclinic phase with two ellipsoids of different orientations per unit cell (SM2). In order to study the stability of these crystalline phases at different aspect ratios and as a function of density we have calculated their free energies by thermodynamic integration. The integration path was sampled by an expanded ensemble method in which …

Filmu fragmenti angļu valodas gramatikas induktīvai apguvei 12. klasē

2016

Skolēnu vajadzības un vēlmes attiecībā uz angļu valodas mācīšanos laika gaitā ir mainījušās, tādēļ, lai nodrošinātu skolēnu mācīšanās vajadzību un vēlmju ievērošanu, skolotājiem ir jābūt informētiem par jaunākajām mācību metodēm un pieejām angļu valodas mācīšanai. Mūsdienās skolēniem nesagādā grūtības komunikācija angļu valodā un viņi ir prasmīgi valodas lietotāji, pateicoties interneta videi, kurā skolēni pavada daļu brīvā laika. Skolotāju loma ir nodrošināt skolēnus ar pareizas valodas un gramatikas lietošanas priekšnosacījumiem, piedāvājot motivējošas un interesantas valodas mācīšanās metodes un instrumentus. Ņemot vērā iepriekšminēto, diplomdarba autore veica pētījumu, lai noskaidrotu k…

Phase Transition of Individually Addressable Microstructured Membranes Visualized by Imaging Ellipsometry

2007

The phase transition of individually addressable microstructured lipid bilayers was investigated by means of imaging ellipsometry. Microstructured bilayers were created on silicon substrates by micromolding in capillaries, and the thermotropic behavior of various saturated diacyl phosphatidylcholine (1,2-dipalmitoyl-sn-glycero-3-phosphocholine, 1,2-dipentadecoyl-sn-glycero-3-phosphocholine, and 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC)) bilayers as well as DMPC/cholesterol membranes was determined by measuring the area expansion and thickness of the bilayer as a function of temperature. We found an increase in the main phase transition temperature T(M) of 2-6 degrees C and a substa…

Melting and interdigitation of microstructured solid supported membranes quantified by imaging ellipsometry

2010

The phase transition of individually addressable microstructured lipid bilayers was investigated by means of noncontact imaging ellipsometry. Two-dimensional membrane compartments were created on silicon substrates by micromolding in capillaries and the phase transition of supported dimyristoylphosphadiylcholine DMPC and dipentadecoylphosphatidylcholine DiC15PC membranes was determined measuring area expansion and thickness of the bilayer as a function of temperature, ethanol concentration, and cholesterol content. Apart from measuring the thermotropic behavior of DMPC on glass slides and silicon wafers, the authors were able to visualize the reversible induction of an interdigitated phase …

Ellipsometric studies of behenic acid at the air-water interface

1991

The rich phase behaviour of monolayers of behenic acid (=docosanoic acid) has been analyzed by null ellipsometry in isothermic and isobaric measurements. By using structural data known from x-ray measurements the anisotropy and refractive indices in the vicinity of the S-CS phase transition have been calculated with a minimum of model assumptions. The calculated values are: nsx=1.47. ncsx=1.48. nsz=1.54. ncsz=1.55. and anisotropy γ=nx/nz ≈0.95. It is also shown that ellipsometry is a very sensitive and convenient method of detecting phase transitions. Its value for quantifying the roughness of the monolayer in the close vicinity of phase transitions due to thickness and density fluctuations…

Optical measurements of an acylated azacrown at the air-water interface

1991

In this study, a cyclame derivative bearing four aliphatic chain substituents shows, like many amphiphiles, solid-condensed as well as liquid-expanded phases. In contrast to the classical amphiphiles, the onset of its phase transition is characterized by a bump-like shape whose amplitude is a function of the compression speed. Ellipsometry which is very sensitive to the monolayer physical state changes, and fluorescence microscopy which has contributed significantly to the understanding of the phenomena occurring in the phase transition region have been used to investigate the monolayer behavior of this compound. This study shows that in the liquid-expanded state, the film is homogeneous an…

Ellipsometric study of the physical states of phosphatidylcholines at the air-water interface

1990

Etude des couches monomoleculaires de dimyristoylphosphatidylcholine, de dipalmitoylphosphatidylcholine, de distearoyl phosphatidylcholine, de diarachidoylphosphatidylcholine a l'interface air/eau