Evaluation of integral exposure energy load on aural analyzer of miners

The individual exposure integral noise load on workers before the beginning of hearing impairment was determined for a group of 20 male miners who had worked with drilling equipment and harvesters for 8 to 20 years before the onset of the disability. Results show that the total exposure energy load of about 4 kw x h sq m, obtained by miners in the examined group, resulted in occupational injury to the auditory organ (cochlear neuritis) in 75% of the cases. The equivalent energy level of noise computed according to the date of total energy load is roughly 99 db A, which significantly exceeds the permissible amount of 85 db A. There is a correlation (r = 0.77) between the integral exposure energy noise on the aural analyzer in the degree of increase in the total threshold for the mean speech range

The new method of hidden signals transmission

In this paper, we propose a new method of using frequency bands employed for secure communication signals. The possibility of using this method in the sound band of analog TV.В данной работе предлагается новый метод использования занятых частотных полос для скрытой передачи сигналов. Показана возможность применения данного метода в полосе частот звукового сопровождения аналогового ТВ

The statistics of the photometric accuracy based on MASS data and the evaluation of high-altitude wind

The effect of stellar scintillation on the accuracy of photometric measurements is analyzed. We obtain a convenient form of estimaton of this effect in the long exposure regime, when the turbulence shift produced by the wind is much larger than the aperture of the telescope. A simple method is proposed to determine index $S_3$ introduced by perture of the Kenyon et al. (2006), directly from the measurements with the Multi Aperture Scintillation Sensor (MASS) without information on vertical profile of the wind. The statistics $S_3$ resulting from our campaign of 2005 -- 2007 at Maidanak observatory is presented. It is shown that these data can be used to estimate high-altitude winds at pressure level 70 -- 100 mbar. Comparison with the wind speed retrieved from the NCEP/NCAR global models shows a good agreement. Some prospects for retrieval of the wind speed profile from the MASS measurements are outlined.Comment: 11 pages, 9 figures, accepted for publication in Astronomy Letter

Weight functions of light shield and the signal at the input of optical sensor at the intersection of the bullets of light shield

In this article, the definition of weight functions of a light shield at the intersection of the bullet in different field areas of shield registration is considered. The signal definition at the input of an optical sensor at the intersection of the bullet of a light shield is viewed. The research results can be used in considering the facts that can influence on the error estimation of the coordinate determination when a bullet hits the target

ВЛИЯНИЕ ИПОТЕЧНЫХ СТАВОК НА ЦЕНООБРАЗОВАНИЕ НА ПЕРВИЧНОМ РЫНКЕ ЖИЛЬЯ

The article considers relationship of pricesin the primary market, depending on theregional origin and type of home, with thevalue of mortgage rates. Assesses thestrength of such a relationship and thepossible effects of changes in such rates.Встатьерассматриваетсясвязьценна первичномрынкежилья, взависимости от региональной принадлежности и типа дома, с величиной ставки по ипотеке. Даётся оценка силы такой связи и возможных последствий изменения таких ставок

THE EVALUATION OF FUNCTIONAL STATE OF A HAND AFTER SURGICAL RESTORATION OF THE FLEXOR TENDONS AT THE FIBRO-OSSEOUS CANALS

Till these days the problem of restoration of the function of damaged flexor tendons of fingers is unsolved. A.M. Volkova consider that none of the surgical department has so many disappointments of unsatisfactory results as in surgery of wrist flexor. Functional result of treatment is defined by: 1) the level of damage; 2) means suture; 3) suture material. Active role of a hand in human activity defines high frequency of damages of this segment. More often 1-2 zone subjected to trauma, it is connected with involuntary defensive reaction at the moment of trauma. The most difficult is to restore flexor tendons at the level of bone and fibrous channels. In this work the analysis of further results of treatment of patients had surgery of tendon unit in the department of microsurgery is given. On the basis of the findings optimal and promising areas for surgery technics and results of treatment improving are defined