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This study aims to investigate the AD (asthma, allergic rhinitis and atopic dermatitis) prevalence for elementary schoolchildren in an industrial city of Ulsan, Korea and to identify major environmental risk factors associated with AD prevalence. Data on the physician-diagnosed prevalence in the past 12 months and potential risk factors of AD were collected by a questionnaire including ISAAC core...
Tumor-infiltrating lymphocytes (TILs) play critical roles in host anti-tumor immune responses. It is known that cancer patients with tumor-reactive lymphocyte infiltration in their tumors have better prognoses, while patients with tumors infiltrated by immunosuppressive cells have worse prognoses. We found that administration of 6-gingerol, which is a component of ginger, inhibited tumor growth in...
In the present work we analyzed the influence of torch discharge plasma heterogeneity on the character of electromagnetic field attenuation along the discharge axis. A discharge burning in air at atmospheric pressure was analyzed. When taking discharge filament heterogeneity into account, two factors were considered: axial heterogeneity of discharge filament specific conductivity and diminishing of...
This paper proposes a novel watermarking algorithm that protects digital copyrights and is robust to attacks. The Algorithm contains two features: finding target subband based on energy and wetting adaptive quantization step-size. These features improve the robustness and preserve high audio quality. Watermarks are embedded in the subband including the significant part of the signal such as a pitch...
CD137 (also called 4-1BB and TNFRSF9) has recently received attention as a therapeutic target for cancer and a variety of autoimmune and inflammatory diseases. Stimulating CD137 in vivo enhances CD8+ T cell-activity and results in strong immunosuppression in some contexts. This paradoxical phenomenon may be partially explained by the ability of CD137-stimulating reagents (usually agonistic monoclonal...
The values of the coefficient α of separation of the alkali metals in the LiGa-NaOH, LiGa-KOH, and KGa-NaOH gallam-exchange systems were determined. The dependences of α on the temperature and concentrations of the phases involved in the exchange were studied for the LiGa-NaOH and LiGa-KOH systems. The kinetic parameters for the exchange of lithium, sodium, and potassium were obtained. The rate constants...
Experimental investigations aimed at studying the fundamental properties of x-ray generation by relativistic electrons in waveguide structures are presented. Both simple triple-layer W/C/W waveguide and complex waveguide structures such as non-uniform and uniform photonic crystals created on thick Si substrates were used. The W/C/W waveguide effect proved in x-rays distributions as an additional narrow...
The results of experimental studies of the interaction modes of communication on the window of a multimode waveguide resonator with a short train are presented. The experimentally determined dependence of the mode coupling parameters of the plume and windows due to the loop resonator. Based on these experiments, the model of the process of energy transfer from mode to mode in the microwave compressor...
The paper is devoted to simulation of heating of fuel element cladding under its treatment by argon ions. The thermal flow from the source of strip ion beam has been measured. Numerical calculations of temperature fields occurring in the cladding under treatment are presented.
The control system of industrial plant for ion-plasma treatment of large reflectors is presented in the report. Brief description of the structure and technological capabilities of the plant is given. The selection of structure of the control system and master controller is justified. The principles of the controller executive program are described. Design features of the control system are given.
In this paper the problem of utilization of Liquid Radioactive Waste (LRW) is considered. The purpose of this work is determination and evaluation of LRW recycling possibility with application of plasma equipment in powder of metal oxide for further conservation or use. The possibility of such recycling on the basis of thermodynamic modeling is shown. Results of conducted research can be used for...
The results of application of cathode with end screens for relativistic magnetron microwave generators are presented. The increase in power of microwave radiation by 40–50% in comparison with the cathode without screens was obtained.
Laser triggering was used to synchronize the switching of two resonant microwave compressors over to energy extraction mode. The obtained experimental data of the study are presented. Practically the precise synchronism was demonstrated when switching the working mode in the storage regime. Each compressor provided pulses of 250 MW power and 5 ns pulsewidth, the pulse summation gave the output pulse...
The results of investigations of applicability of the method of high-frequency short-pulsed plasma-immersion ion implantation and (or) coating deposition using vacuum-arc and ablation plasma to conductive and dielectric substrates are presented. It is shown that ion implantation with the ion sputtering compensation by coating deposition from plasma and ion-assisted coating deposition can be realized...
The first results of experimental study of a back transition radiation (BTR) generated by 5.7 MeV electrons in the soft x-ray radiation region are presented. In the experiment the angular distribution (rocking curves) of the yield of radiation generated at the input surfaces of the samples has been measured for thin Si crystal. The radiation was measured by a channel electron multiplier (CEM-6) at...
Peculiarities of mandrelling small diameter deep holes with high allowances, production tooling applied, holes accuracy and surface finish provided by the given processing technique are examined.
Wear of cutting tool in the most of cases occurs on the tool flank and causes increasing of cutting force which results aggravation quality of processed surface and accuracy, destruction of tool. Knowledge of distribution of contact load on the wear chamfer of tool flank is used for analysis of stressed state, calculation of strength and rational use of cutting tools. Experimental and theoretical...
The method of eddy-current flaw detection based on the combined multi-sector transducer with a magnetic field of different frequencies is observed. Technical implementation of a method for flaw detection of bars and pipes in the conditions of the considerable transverse displacements of controllable articles and inhomogeneity of magnetic and electrical properties of a material is presented.
A regression model for determination of hatch spacing during layered laser sintering of reinforced solids is proposed. A subject matter of the process is that a reinforcing element is inserted in a special vat, polymer suspension is added and then the surface of the suspension is processed with a laser beam. Particles of the suspension dispersed phase are sintered and form a single layer attached...
The present research work is devoted to investigation of various modes of electrolytic-plasma cementation influence on peculiarities of structurally-phase conditions and hardening of constructional steel 30CrMnSi. Scientifically based low-powered and resources-economy type of processing has been selected and leads to stable ferrite-perlites structures formation providing higher mechanical properties...
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