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Green fluorescent protein (GFP) isolated from the jellyfish species Aequorea Victoria, consists of 238 amino acids with a molecular weight of about 27 kDa. GFP is characterized by two absorption peaks in blue light at 395 nm (major) and 475 nm (minor) and a fluorescence peak at 498 nm in the green range. At present, the gene for this protein and proteins derived from it, glowing with different colors, is used as a luminous marker in cell and molecular biology to study protein expression in cells and living organisms in vivo. GFP also allows purification of recombinant proteins, where GFP or its derivatives are used as an affinity label.

NTEGRA Spectra II is already a second-generation measuring system that successfully demonstrates the unification of two worlds: AFM and Raman spectroscopy. It can perform multiple functions ranging from relief mapping to 2D spectral analysis, from studies of electrical and mechanical properties to optical measurements with a resolution below the diffraction limit. Now scientists can conduct a complete physico-chemical analysis of the surface properties of the sample at a time. As a result, researchers get unlimited opportunities to develop their laboratory techniques.

B – vacuum; The coolant furnace is designed for annealing; 2.5 – the volume of the working space in dm3; 25 – the maximum operating temperature divided by 100, i.e., 2500 ° C

We offer expert laboratories of physicochemical methods of analysis a gas chromatograph with a quadrupole mass spectrometric detector «MAESTRO-αMS». Quadrupole GC-MS «MAESTRO-αMS» is in demand for targeted research (screening) and non-targeted search. In targeted studies, it is necessary to detect given target compounds in samples of various nature and origin at the level of residual amounts, for example, several picograms of the target compound in the injected 1 μl of liquid sample. Most often, targeted research is carried out in the following areas of laboratory screening: ecology, food safety, clinical monitoring, narcology, doping control, production control of various raw materials. In targeted studies, it is often required not only to confirm the presence of a compound in a sample, but also to determine the level of its content quantitatively, since both the list of target compounds and the permissible level of their presence in the sample are specified by regulatory documents. Quantitative analysis requires standards for the substances you are looking for. When conducting a non-target search, as a rule, it is required to analyze a sample of unknown composition, in other words, to find as many compounds as possible in the sample and identify (identify) each of them. Since the identification of a detected compound is carried out by comparing its experimental mass spectrum with the spectrum of a pure substance obtained under standard conditions, this task requires reference libraries of mass spectra of pure substances, as well as tools for working with mass spectra, for example: algorithms for cleaning experimental mass spectra from background and spectral noise (mass spectrum deconvolution algorithms), library search and comparison algorithms. An off-target search is called a qualitative analysis, since the researcher is primarily interested in the list of detected substances, and not in the quantitative assessment of their content in the sample. When creating MAESTRO-αMS, we took into account our own many years of experience in operating imported analogues. We have made the device inexpensive. We have made the device compact: The modern design of the device made it possible to make the MAESTRO-αMS really compact, so that the device occupies the smallest possible area on the laboratory table. The layout of the device allows you to remove the ion source on the front flange for cleaning and replacing the cathodes, if necessary. We have reduced the cost of operation: When developing the MAESTRO-αMS, we sought to increase the resistance of the device to sample matrices and use a minimum of consumable materials in order to eliminate downtime for maintenance and replacement. As a result, we have created an extremely stable ion source and a perpetual photomultiplier detector. We have created special software: Even at the first acquaintance with the software, it becomes obvious that being in the window of each button and each parameter to be changed is expedient and logical. Our software product was created for the convenience of the operator, so we implemented the necessary and eliminated the unnecessary. We used the principle of one active window, in which the operator moves sequentially step by step, performing hardware settings, setting the data collection method, subsequent processing algorithms, templates for presenting the results. MAESTRO-αMS offers a wide range of scanning modes, built-in algorithms for working with mass spectral data, convenient unloading of initial data arrays for their processing in specialized software packages, graphics export for presentations and scientific publications. You can use several libraries of mass spectra at the same time, or create your own for your typical tasks. Finally, we provide a 5-day training course for professionals who want to understand the theoretical foundations of the method and their implementation in the hardware of modern quadrupole GC/MS. The volume and depth of presentation of the material from the developers of the device is intended to lay the foundation for the effective use of «MAESTRO-αMS» in the future. Some technical characteristics of MAESTRO-αMS: • Instrumental detection limit (SIM, OFN @272 m/z ) < 10 fg; • Scan modes: scan for selected ions, full scan in a given mass range, combined scan mode; • The number of simultaneously connected libraries of mass spectra is at least 10.

The source is capable of operating both independently and as part of automated measuring systems with interfaces such as RS-232 and ETHERNET Technical specifications Output voltage setting range from 0 to 60 V Output current setting range from 0.2 to 10 A Electrical output power, not less than 300 W The main error of the output voltage setting is ± 100 mV The main error of the output current setting is ± 100 mA Additional error in setting the output voltage caused by a deviation of the mains voltage from the nominal value by ± 10% ± (0.0001 · Uust + 1 mV) Additional error in setting the output voltage caused by a change in the load current from 0.9 of the maximum value to zero ± (0.0002 · Uust + 5 mV) Additional error in setting the output current caused by a deviation of the mains voltage from the nominal value by ± 10% ± (0.0002 · Iust + 2 mA) Additional error in setting the output current caused by a change in the load voltage from 0.9 of the maximum value to zero ± (0.0005 · Iust + 5 mA) Instability of the output voltage for any 10 minutes during 8 hours of continuous operation, no more than ± 50 mV Instability of the output current for any 10 minutes during 8 hours of continuous operation, no more than ± 50 mA Operating temperature range from 10 to 50 °C AC power supply 220 V, 50 Hz Power consumption, no more than 500 VA Overall dimensions, mm 240x128x313 Weight, not more than 6.0 kg

It is intended for obtaining analytical purity in laboratory conditions from distilled water, used for HPLC, electrophoresis, preparation of solutions, chromatographic samples, refueling of electrolysis generators of hydrogen/oxygen and other purposes. Technical specifications The specific resistance of the received water is not less than 17.5 MOmhsm Productivity is not less than 1 l/hour Metal ion content is not more than: Fe, Pb, Ni, Co 5 mcG/l Zn 0,5 mcG/l Cd, Cu, Mn 0,1 mcG/l The content of ammonium ions is not more than 100 mcG/l The number of bacteria is not more than 5 CFU/ml Operating time of replaceable cartridges (total volume of purified water) is not less than 300 liters Volume of refilled distilled water is 1 l Overall dimensions are 210x590x455 mm The mass of the filled device is not more than 15 kg Working conditions: ambient temperature from +15 to +35 °C Power supply from single-phase AC 220 V, 50 Hz Power consumption is not more than 50 VA

GCHA-120 nitrogen generators are designed to produce in laboratory conditions nitrogen of the highest purity that is used to power analytical instruments, boxes with an inert atmosphere. Technical specifications The grade of nitrogen produced according to GOST 9293-74 is high purity, grade I Volume fraction of nitrogen is not less than % by volume (including impurities of inert gases — argon, neon, helium) 99.999 Volume fraction of oxygen is not more than, % vol. 0.0005 (5 ppm) Volume fraction of water vapor is not more than, % vol. 0.0007 (7 ppm) Volume fraction of hydrogen is not more than, % vol. (ppm) 0.0002 (2 ppm) The volume fraction of the sum of carbon-containing compounds in terms of methane is not more than, % vol. (ppm)* (with a methane content in the supply air of not more than 4 ppm) 0.0003 (3 ppm) Maximum nitrogen capacity is at least 120 (2.0 l/min), l/h Nominal nitrogen output pressure (with the throttle open) is 4 ati The time of setting the operating mode for single-shift operation is no more than 45 min Nominal inlet air pressure is 6 ati Maximum allowable inlet air pressure is 8 ati Minimum inlet air pressure is 5.5 ati Compressed air consumption, at nominal inlet pressure and maximum flow rate is no more than, l/h, 3600 (60 l/min) Power consumption is not more than, VA, 100 Overall dimensions, (width x depth x height) are not more than, mm, 230x580x680; Weight is not more than, kg 32 Working conditions: ambient temperature, C°, from +10 to +35 Electric power supply from single-phase AC mains voltage, V, 220± 10% and frequency, Hz, 50 ± 1 Average full service life is at least 6 years The generator for electrical safety meets the requirements of Class 1, type H according to GOST 12.2.025-76

The principle of operation of dosimeters is based on the accumulation of ionizing radiation energy by detectors proportional to the radiation dose. In DVG-02TM installations, DOZA-TLD complexes, etc., when the detector is heated, the accumulated energy is released in the form of light radiation, which is recorded by an electronic device.

IL-15 is a pleiotropic cytokine. It is essential for the development, survival, and activation of NK cells. Participates in the induction of cytotoxic effector cells. Acting as an interleukin-2 antagonist, IL-15 contributes to the maintenance of CD8+ T memory cells and the maintenance and survival of CD4+ and CD8+ T lymphocytes. Acts on a number of other cells.

Purpose measurement of the ambient dose equivalent of N*(10) gamma radiation; measurement of ambient dose equivalent of H*(10) gamma radiation; assessment of surface contamination with radionuclides.

Purpose: processing of information received from detection units (primary converters); data transmission to the information network; data transfer to a portable computer (remote control tuning PN-PC); storage of threshold settings and parameters of detection units (primary converters); power supply and diagnostics of detection units (primary converters); output of threshold exceeding signals to built-in sound and LED alarms and to remote alarm units (BAS/BAS-1c); output of discrete signals (dry contacts); archiving of data in non-volatile memory.