Carbon nanowalls: the next step for physical manifestation of the black body coating.

The optical properties of carbon nanowall (CNW) films in the visible range have been studied and reported for the first time. Depending on the film structure, ultra-low total reflectance up to 0.13% can be reached, which makes the CNW films a promising candidate for the black body-like coating, and thus for a wide range of applications as a light absorber. We have estimated important trends in the optical property variation from sample to sample, and identified the presence of edge states and domain boundaries in carbon nanowalls as well as the film mass density variation as the key factors. Also we demonstrated that at much lower film thickness and density than for a carbon nanotube forest the CNWs yield one order higher specific light absorption.

Nanocrystalline graphite films nucleation by the radio frequency bias pretreatment.

New method for nucleation of different nanocrystalline carbon films upon monocrystalline Si substrate was proposed. The process is based on a combination of microwave and radio frequency plasma assisted chemical vapor deposition methods. Potential of the method for nucleation was demonstrated by deposition of nanocrystalline diamond film in pure microwave plasma in one process, immediately after "seeding" procedure. The method was also used for growth of nanocrystalline graphite (NCG) films, which are currently under intensive investigation due to their exceptional electronic properties, particularly fine electron emission characteristics. Deposited NCG films have demonstrated remarkable electron field emission properties having current density of up to 10 A/cm2. The films have also possessed good adhesion to silicon substrate. Carbon films and nucleation layer were characterized by scanning electron microscopy, transmission electron microscopy and Raman spectroscopy.

[Morphologic evaluation of the potential of fluorescent analysis in the diagnosis of gastric diseases]. / Morfologicheskaia otsenka vozmozhnostei fliuorestsentnogo analiza v diagnostike zabolevanii zheludka.

A method based on the secondary luminescence of malignant tumours facilitates a more precise taking of biopsies in ulcers and polyps undergoing malignant transformation in carcinoma developing against gastritis background as well as during emergency intraoperative diagnosis. 478 gastroscopies were performed in order to clarify the correlation between fluorescence and the presence of carcinoma in the luminescent biopsies. Biopsies were obtained from both fluorescent and non-fluorescent areas. Besides that, fluorescent study of operative edges of 117 stomachs removed because of carcinoma was carried out. It is proved that the use of fluorescent method increases the value of biopsies.

[Use of robotics in the realization of external perosseous osteosynthesis]. / Primenenie robototekhniki v realizatsii naruzhnogo chreskostnogo osteosinteza.

The authors expound the principles of making up of the algorithm (program) for diagnosis and implementation of the optimal variations of rod insertion in various types of fractures of the extremities and the method of adaptation of the program to a specific fracture according to its biomechanical characteristics. The succession of the realization of the program of insertion of the rods, reposition of the fragments and application of the apparatus with the aid of the robot are described.