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  JOURNAL "NP" ISSUES

"Nauchnoe Priborostroenie", 2020, vol. 30, no. 1. ISSN 2312-2951. DOI: 10.18358/np-30-1-134
PHYSICS OF INSTRUMENT MAKING

On the droplet formation process in an X-shaped microfluidic device

S. D. Svetlov, R. S. Abiev, Y. P. Prokof'eva, A. V. Anufriev

3

On the nonlinearity of electrokinetic phenomena. Overview

A. N. Zhukov, V. E. Kurochkin, B. P. Sharfarets

17

Transverse relaxation of nuclear spin system in lithium-zinc ferrite at different
excitation powers

A. V . K hudyakov , I. V. Pleshakov, Ya. A. Fofanov, Yu. I. Kuzmin

22

Laser diode wavelength meter in the range of 330—1080 nm

E. G. Silkis , A. S. Stankevich, V. N. Krasheninnikov, D. V. Novikov

27

SYSTEM ANALYSIS OF MEASURING
DEVICES AND METHODS

Optimization of the method for analysis of free fatty acids using the combination
of MALDI mass spectrometry and Langmuir monolayers technology

A. S. Gladchuk, E. G. Batotsyrenova, E. P. Podolskaya

39

Semi-automatic sample preparation device for analyzing beryllium traces in the air
of a working room using ERIAD mass spectrometry (electrospray)

I. A. Gromov, D. O. Kuleshov, O. A. Belyaeva, N. R. Gall

50

Quantitative mass spectrometry in diagnostics of influenza and control of action
of the medicinal product triazavirine

A. V. Protasov, R. A. Bublyaev, O. A. Mirgorodskaya

55

Determination of magnetization intensity of magnetic liquid by difference
of frequencies of nuclear magnetic resonance of protons at two orientations
of a cylinder sensor

A. I. Zhernovoy

62

MATHEMATICAL METHODS AND MODELLING
IN INSTRUMENT MAKING

Simulation of scattering on the superposition of two potentials

A. P. Shcherbakov

68

Optimization of the operation mode of the three-grid ion gate
of the ion-mobility spectrometer

I. V. Kurnin

74

FROM EDITION

Ptitsyn Valeriy Eduardovich (obituary)

80

 

Ulitsa Ivana Chernykh, 31-33, lit. A, St. Petersburg, Russia, 198095, P.O.B. 140
tel: (812) 3630719, fax: (812) 3630720, mail: iap@ianin.spb.su

content: Valery D. Belenkov design: Banu S. Kuspanova layout: Anton V. Manoilov