The method of digital parametric measurement of the phase shift of signals with slowly varying amplitudes of the same slowly varying instantaneous frequencies was proposed. The numerical simulations and experiments on the developed hardware and software system were carried out. The error of measurement the phase difference of harmonic signals in the experiments were not more than  0,00001 radian. The method can be used in applications where the measured value is expressed in terms of the phase difference of quasi-harmonic signals.

Keywords: quasi-harmonic signal, phase shift, real time measurements, hardware and software system

Main disadvantages of a dark image are considered. Alternative algorithm of improving dark images is proposed.

Keywords: Preliminary processing, digital image analysis, digital image improvement, Gaussian noise, dark images.

Intracellular microinjection - a method of direct introduction of cellular organelles and solutions of substances into living cells. The technique of microinjection into nerve cells by puncturing their processes - axons , which are often surrounded by a dense glial sheath, are described. To puncture the sheath a special injector transmitting microvibrations of ultrasonic frequency on the injection capillary was designed. The results of using the proposed microinjection technique for introducing fluorescent marker in large axons of model object - crayfish ventral nerve cord, to visualize the morphology of axons, were shown.

Keywords: intracellular microinjection, neuron, axon, glial sheath, ultrasound vibration, piezoelectric transducer

This paper describes a hardware-based and software system parametric estimation of signals. It`s experimental accuracy was achieved measuring the phase difference between the two quasi-harmonic signals at 10 μrad.  

Keywords: parametric analysis, technical diagnostics, the phase difference

Information about authors of issue №4 (2013)

Keywords: authors

Digital compact proton magnetometer was created for measure the geomagnetic fields, including the fields of high heterogeneity. We described design of the instrument and its principles of operation. This device is using implemented digital filtering techniques and Prony method to determine the frequency of the desired signal. The experiments were made in the fields of high heterogeneity and demonstrated the possibility of precise measurements in the fields with a gradient of up to 8 mT / m. The device can be used as a metal detector, as well as for magnetic prospecting, geological studies, etc.

Keywords: nuclear magnetic resonance, free precession, proton magnetometer, geomagnetic field, digital filtering, Prony method

  The analysis of a spherically converging sound beam is made. As the parameter reflecting evolution of a wave, the front surface curvature is used. The expressions are received, allowing determining value of a phase front curvature of sound beams with various amplitude distributions. Axial and cross distributions of front curvature of focused beam with gauss and uniform amplitude distributions are resulted. Different influence of radiator surface curvature on wave front dynamics in cases ,  and  is marked. Similar characteristics for a flat radiator are presented. 

Keywords: Focusing radiator; diffraction; phase front curvature

  The main maintenance of a diversification of production as activity of subjects of managing is considered. being shown in purchase of the operating enterprises, the organizations of the new enterprises, redistribution of investments in interests of the organization and development of new production on available floor spaces. The most important organizational economic targets of a diversification of management are presented by innovative activity of the industrial enterprise.

Keywords: diversification of management, production diversification, financial and economic purposes of a diversification, technological purposes of ensuring flexibility of production

  This article provides an analysis of the existing grinding equipment, is a diagram of the chopper on the basis of dynamic autogenously use in its construction a closed loop mechanism, which allows to reduce power consumption by using energy circulation, which appears in the kinematic mismatch of the upper and lower branch of the circuit, made ​​a preliminary analysis of test performance of the prototype designed machines.

Keywords: grinder, dynamic self-crushing, crushing and grinding equipment, specific energy consumption, mechanisms, closed circuit circulation of energy

This article related to the technological problem. Books and manuscripts are subjected to natural aging due to the fragility of the raw materials, the deterioration of the conditions of storage, as well as losses of fragments due to repeated or careless operation. Therefore, for libraries, archives and museums is particularly important in matters of preservation of documents not only the process of conservation, but the recovery of the lost fragments.

Keywords: technology, restoration, conservation, listodolivochnye machines, vacuum table, the machine for making pulp

  A brief review of the polymer used in the restoration of both of synthetic and natural. The advantages and disadvantages of the polymer used.

Keywords: restoration, synthetic polymers, natural polymers, painting

Analog-to-digital converter, with modulation, amplification and demodulation of the input signal is carried out. To compensate the additional error of voltage conversion, concerned with temperature instability, used dynamic cancellation technique, based on the correlation between offset voltage and modulator temperature fluctuation. ADC with response time 0.85 s performs the threshold of sensitivity 1 nV; 8,5 s - 0,31 nV, 85 s - 0.13 nV, 850 s - 0.1 nV, respectively, in the full-scale range 400 mV. Estimation of offset voltage temperature drift is 40 pV / ºC, time drift - 100 pV / h.

Keywords: analog-to-digital converter, ADC, error cancellation.

`Described is the methodology of studying of topology of tensor quantity of magnetic field of leakage of natural defects in the natural geomagnetic field magnetization, which is the base for realization of digital Hall defect scope. Using this set it was managed to register the defects with the peculiar size of 15 microns in steel wire, which is used for reeling of butter spring of trucks.

Keywords: non-destructive testing, Hall-effect sensor, magnetic tomography.

Information about authors of issue №3 (2013)

Keywords: authors

Information about authors of issue №2 (2012)

Keywords: authors