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Topography-dependent tuning of water wettability was achieved on a stainless steel surface textured by nanosecond-laser pulses at different laser fluences, with the minimal contribution of the surface chemical modification. Such differently-wet neighboring surface spots were demonstrated to drive an autonomous directional water flow. A series of elementary microfluidic devices based on the spatial wetting gradients were designed and tested as building blocks of "green", energy-saving autonomous microfluidic circuits.
Nadezda Shchedrina; Sergey Kudryashov; Mikhail Moskvin; Galina Odintsova; Irina Krylach; Pavel Danilov; Anastasiya Bondarenko; Evgeniya Davydova; Maria Fokina; Roman Olekhnovich; Mayya Uspenskaya; Vadim Veiko. Elementary autonomous surface microfluidic devices based on laser-fabricated wetting gradient microtextures, driving directional water flows. Optics Express 2021, 29, 12616 -12624.
AMA StyleNadezda Shchedrina, Sergey Kudryashov, Mikhail Moskvin, Galina Odintsova, Irina Krylach, Pavel Danilov, Anastasiya Bondarenko, Evgeniya Davydova, Maria Fokina, Roman Olekhnovich, Mayya Uspenskaya, Vadim Veiko. Elementary autonomous surface microfluidic devices based on laser-fabricated wetting gradient microtextures, driving directional water flows. Optics Express. 2021; 29 (8):12616-12624.
Chicago/Turabian StyleNadezda Shchedrina; Sergey Kudryashov; Mikhail Moskvin; Galina Odintsova; Irina Krylach; Pavel Danilov; Anastasiya Bondarenko; Evgeniya Davydova; Maria Fokina; Roman Olekhnovich; Mayya Uspenskaya; Vadim Veiko. 2021. "Elementary autonomous surface microfluidic devices based on laser-fabricated wetting gradient microtextures, driving directional water flows." Optics Express 29, no. 8: 12616-12624.
Polyvinyl chloride (PVC) is a widely used polymer, not only in industry, but also in our daily life. PVC is a material that can be applied in many different fields, such as building and construction, health care, and electronics. In recent decades, the success of electrospinning technology to fabricate nanofibers has expanded the applicability of polymers. PVC nanofibers have been successfully manufactured by electrospinning. By changing the initial electrospinning parameters, it is possible to obtain PVC nanofibers with diameters ranging from a few hundreds of nanometers to several micrometers. PVC nanofibers have many advantages, such as high porosity, high mechanical strength, large surface area, waterproof, and no toxicity. PVC nanofibers have been found to be very useful in many fields with a wide variety of applications such as air filtration systems, water treatment, oil spill treatment, batteries technology, protective clothing, corrosion resistance, and many others. This paper reviews the fabricating method, properties, applications, and prospects of PVC nanofibers.
Le Quoc Pham; Mayya Uspenskaya; Roman Olekhnovich; Rigel Olvera Bernal. A Review on Electrospun PVC Nanofibers: Fabrication, Properties, and Application. Fibers 2021, 9, 12 .
AMA StyleLe Quoc Pham, Mayya Uspenskaya, Roman Olekhnovich, Rigel Olvera Bernal. A Review on Electrospun PVC Nanofibers: Fabrication, Properties, and Application. Fibers. 2021; 9 (2):12.
Chicago/Turabian StyleLe Quoc Pham; Mayya Uspenskaya; Roman Olekhnovich; Rigel Olvera Bernal. 2021. "A Review on Electrospun PVC Nanofibers: Fabrication, Properties, and Application." Fibers 9, no. 2: 12.
This paper investigates the mechanical properties of oriented polyvinyl chloride (PVC) nanofiber mats, which, were obtained by electrospinning a PVC solution. PVC was dissolved in a solvent mixture of tetrahydrofuran/dimethylformamide. Electrospinning parameters used in our work were, voltage 20 kV; flow rate 0.5 mL/h; the distance between the syringe tip and collector was 15 cm. The rotating speed of the drum collector was varied from 500 to 2500 rpm with a range of 500 rpm. Nanofiber mats were characterized by scanning electron microscope, thermogravimetric analysis, differential scanning calorimetry methods. The mechanical properties of PVC nanofiber mats, such as tensile strength, Young’s modulus, thermal degradation, and glass transition temperature were also analyzed. It was shown that, by increasing the collector’s rotation speed from 0 (flat plate collector) to 2500 rpm (drum collector), the average diameter of PVC nanofibers decreased from 313 ± 52 to 229 ± 47 nm. At the same time, it was observed that the mechanical properties of the resulting nanofiber mats were improved: tensile strength increased from 2.2 ± 0.2 MPa to 9.1 ± 0.3 MPa, Young’s modulus from 53 ± 14 to 308 ± 19 MPa. Thermogravimetric analysis measurements showed that there was no difference in the process of thermal degradation of nanofiber mats and PVC powders. On the other hand, the glass transition temperature of nanofiber mats and powders did show different values, such values were 77.5 °C and 83.2 °C, respectively.
Quoc Pham Le; Mayya V. Uspenskaya; Roman O. Olekhnovich; Mikhail A. Baranov. The Mechanical Properties of PVC Nanofiber Mats Obtained by Electrospinning. Fibers 2021, 9, 2 .
AMA StyleQuoc Pham Le, Mayya V. Uspenskaya, Roman O. Olekhnovich, Mikhail A. Baranov. The Mechanical Properties of PVC Nanofiber Mats Obtained by Electrospinning. Fibers. 2021; 9 (1):2.
Chicago/Turabian StyleQuoc Pham Le; Mayya V. Uspenskaya; Roman O. Olekhnovich; Mikhail A. Baranov. 2021. "The Mechanical Properties of PVC Nanofiber Mats Obtained by Electrospinning." Fibers 9, no. 1: 2.
Modern drug delivery systems demand the development of targeted polymer-carriers with the set of obligatory requirements. Thus, such capsules must have total biocompatibility, biodegradability, and possess non-allergenic, and non-tumorigenic properties. Hyaluronic acid (HA), as a natural linear polysaccharide that is included in the pericellular and extracellular matrixes, satisfies all these demands in the best possible way. In this study, the biopolymer nanoparticles with an average diameter of 300 nm were successfully obtained from aqueous HA solutions by electrospraying technique and characterized. Due to the presence of active functional groups in the structure of HA, such polymer particles can incorporate various pharmaceutical agents. This finding expands the investigation and subsequent application of drug-loaded nanoparticles based on HA as challenging and advanced targeted delivery systems.
Petr Snetkov; Kseniia Zakharova; Svetlana Morozkina; Mikhail Baranov; Roman Olekhnovich; Mayya Uspenskaya. Electrosprayed Nanoparticles Based on Hyaluronic Acid: Preparation and Characterization. Technologies 2020, 8, 71 .
AMA StylePetr Snetkov, Kseniia Zakharova, Svetlana Morozkina, Mikhail Baranov, Roman Olekhnovich, Mayya Uspenskaya. Electrosprayed Nanoparticles Based on Hyaluronic Acid: Preparation and Characterization. Technologies. 2020; 8 (4):71.
Chicago/Turabian StylePetr Snetkov; Kseniia Zakharova; Svetlana Morozkina; Mikhail Baranov; Roman Olekhnovich; Mayya Uspenskaya. 2020. "Electrosprayed Nanoparticles Based on Hyaluronic Acid: Preparation and Characterization." Technologies 8, no. 4: 71.
Hyaluronic acid, as a natural linear polysaccharide, has attracted researchers’ attention from its initial detection and isolation from tissues in 1934 until the present day. Due to biocompatibility and a high biodegradation of hyaluronic acid, it finds wide application in bioengineering and biomedicine: from biorevitalizing skin cosmetics and endoprostheses of joint fluid to polymeric scaffolds and wound dressings. However, the main properties of aqueous polysaccharide solutions with different molecular weights are different. Moreover, the therapeutic effect of hyaluronic acid-based preparations directly depends on the molecular weight of the biopolymer. The present review collects the information about relations between the molecular weight of hyaluronic acid and its original properties. Particular emphasis is placed on the structural, physical and physico-chemical properties of hyaluronic acid in water solutions, as well as their degradability.
Petr Snetkov; Kseniia Zakharova; Svetlana Morozkina; Roman Olekhnovich; Mayya Uspenskaya. Hyaluronic Acid: The Influence of Molecular Weight on Structural, Physical, Physico-Chemical, and Degradable Properties of Biopolymer. Polymers 2020, 12, 1800 .
AMA StylePetr Snetkov, Kseniia Zakharova, Svetlana Morozkina, Roman Olekhnovich, Mayya Uspenskaya. Hyaluronic Acid: The Influence of Molecular Weight on Structural, Physical, Physico-Chemical, and Degradable Properties of Biopolymer. Polymers. 2020; 12 (8):1800.
Chicago/Turabian StylePetr Snetkov; Kseniia Zakharova; Svetlana Morozkina; Roman Olekhnovich; Mayya Uspenskaya. 2020. "Hyaluronic Acid: The Influence of Molecular Weight on Structural, Physical, Physico-Chemical, and Degradable Properties of Biopolymer." Polymers 12, no. 8: 1800.
Hyaluronic acid, curcumin, and usnic acid are separately utilized as effective biological agents in medicine, and materials based on its blend are considered to have wider therapeutic effects than individual ones. In this study, for the first time, native hyaluronic acid-based fibers containing curcumin and usnic acid with an average diameter of 298 nm were successfully prepared by the electrospinning technique and characterized. Additionally, unstable and hydrophobic curcumin and usnic acid were loaded into the hydrophilic hyaluronic acid matrix without utilizing the activating (catalyzing) agents, resulting in the formation of an electrospinnable solution. Only the binary mixture deionized water—dimethyl sulfoxide (50:50)—was used as solvent. The presence of small amounts of dimethyl sulfoxide in the fibrous materials was expected to provide the materials with local anesthetic and antiseptic activity. The effect of electric voltage on the electrospinning process, diameter, and morphology of hyaluronic acid/curcumin/usnic acid fibers was investigated in detail. The impact of curcumin and usnic acid on the stability of fiber formation was observed. The investigation of fibers based on pure hyaluronic acid without additional polymers and with active pharmaceutical ingredients will lay the groundwork for the development of highly effective wound dressings and new drug delivery scaffolds.
Petr Snetkov; Svetlana Morozkina; Roman Olekhnovich; Thi Hong Nhung Vu; Maria Tyanutova; Mayya Uspenskaya. Curcumin/Usnic Acid-Loaded Electrospun Nanofibers Based on Hyaluronic Acid. Materials 2020, 13, 3476 .
AMA StylePetr Snetkov, Svetlana Morozkina, Roman Olekhnovich, Thi Hong Nhung Vu, Maria Tyanutova, Mayya Uspenskaya. Curcumin/Usnic Acid-Loaded Electrospun Nanofibers Based on Hyaluronic Acid. Materials. 2020; 13 (16):3476.
Chicago/Turabian StylePetr Snetkov; Svetlana Morozkina; Roman Olekhnovich; Thi Hong Nhung Vu; Maria Tyanutova; Mayya Uspenskaya. 2020. "Curcumin/Usnic Acid-Loaded Electrospun Nanofibers Based on Hyaluronic Acid." Materials 13, no. 16: 3476.
Modification of the surface of polyvinyl chloride (PVC) deposited on a copper foil under the influence of nanosecond laser radiation with different peaks fluence was studied by using infrared spectroscopy of attenuated total reflection and optical microscopy. The dependences of the wetting angle of the texture surface with water on the peak fluence of laser radiation were measured. The obtained various relief textures demonstrate a sharp drop in water contact angles from (~ 50o) to super hydrophilic (~ 15o), which allows us to design and fabricate micro-scale elements of laboratory devices for the tasks of bactericidal treatment, collection and removal of liquids, as well as their separation and purification. A stable increase in the contact angles of water with the surface of the textures to hydrophobic (~ up to 140o) observed over time indicates degradation of the polymer coating.
I.V. Krylach; S.I. Kudryashov; R.O. Olekhnovich; V.E. Sitnikova; M.K. Moskvin; N.N. Shchedrina; M.V. Uspenskaya. Fabrication of a Functional Relief on the Surface of a Polyvinyl Chloride Film by Nanosecond Laser Microtexturing-=SUP=-*-=/SUP=-. Журнал технической физики 2020, 128, 1196 .
AMA StyleI.V. Krylach, S.I. Kudryashov, R.O. Olekhnovich, V.E. Sitnikova, M.K. Moskvin, N.N. Shchedrina, M.V. Uspenskaya. Fabrication of a Functional Relief on the Surface of a Polyvinyl Chloride Film by Nanosecond Laser Microtexturing-=SUP=-*-=/SUP=-. Журнал технической физики. 2020; 128 (8):1196.
Chicago/Turabian StyleI.V. Krylach; S.I. Kudryashov; R.O. Olekhnovich; V.E. Sitnikova; M.K. Moskvin; N.N. Shchedrina; M.V. Uspenskaya. 2020. "Fabrication of a Functional Relief on the Surface of a Polyvinyl Chloride Film by Nanosecond Laser Microtexturing-=SUP=-*-=/SUP=-." Журнал технической физики 128, no. 8: 1196.
Hyaluronic acid (HA) is a naturally occurring polymer that is found in variety of tissues and biological fluids. Due to its unique properties such as biodegradability and biocompatibility, HA can be applied in fabrication of nanofibers for tissue engineering and wound healing. Electrospinning as one of the methods of creating such structures allows to obtain fibers and particles with nano- and microscale from polymer solutions utilizing the high voltage power supply. However, the electrospinning process directly depends upon different parameters, including physical characteristics of the polymer solutions. This paper reviews physical properties of aqueous-organic HA solutions considering their suitability for electrospinning
Petr P. Snetkov; ITMO University; Kseniia S. Zakharova; Maria I Tyanutova; Svetlana N. Morozkina; Roman O. Olekhnovich; Mayya V. Uspenskaya. THE STUDY OF THE PHYSICAL PROPERTIES OF AQUEOUS-ORGANIC HYALURONAN ELECTROSPINNING SOLUTIONS. Bulletin of the Saint Petersburg State Institute of Technology (Technical University) 2020, 55, 1 .
AMA StylePetr P. Snetkov, ITMO University, Kseniia S. Zakharova, Maria I Tyanutova, Svetlana N. Morozkina, Roman O. Olekhnovich, Mayya V. Uspenskaya. THE STUDY OF THE PHYSICAL PROPERTIES OF AQUEOUS-ORGANIC HYALURONAN ELECTROSPINNING SOLUTIONS. Bulletin of the Saint Petersburg State Institute of Technology (Technical University). 2020; 55 ():1.
Chicago/Turabian StylePetr P. Snetkov; ITMO University; Kseniia S. Zakharova; Maria I Tyanutova; Svetlana N. Morozkina; Roman O. Olekhnovich; Mayya V. Uspenskaya. 2020. "THE STUDY OF THE PHYSICAL PROPERTIES OF AQUEOUS-ORGANIC HYALURONAN ELECTROSPINNING SOLUTIONS." Bulletin of the Saint Petersburg State Institute of Technology (Technical University) 55, no. : 1.
Nano- and microfibers based on biopolymers are some of the most attractive issues of biotechnology due to their unique properties and effectiveness. Hyaluronan is well-known as a biodegradable, naturally-occurring polymer, which has great potential for being utilized in a fibrous form. The obtaining of fibers from hyaluronan presents a major challenge because of the hydrophilic character of the polymer and the high viscosity level of its solutions. Electrospinning, as the advanced and effective method of the fiber generation, is difficult. The nano- and microfibers from hyaluronan may be obtained by utilizing special techniques, including binary/ternary solvent systems and several polymers described as modifying (or carrying), such as polyethylene oxide (PEO) and polyvinyl alcohol (PVA). This paper reviews various methods for the synthesis of hyaluronan-based fibers, and also collects brief information on the properties and biological activity of hyaluronan and fibrous materials based on it.
Petr Snetkov; Svetlana Morozkina; Mayya Uspenskaya; Roman Olekhnovich. Hyaluronan-Based Nanofibers: Fabrication, Characterization and Application. Polymers 2019, 11, 2036 .
AMA StylePetr Snetkov, Svetlana Morozkina, Mayya Uspenskaya, Roman Olekhnovich. Hyaluronan-Based Nanofibers: Fabrication, Characterization and Application. Polymers. 2019; 11 (12):2036.
Chicago/Turabian StylePetr Snetkov; Svetlana Morozkina; Mayya Uspenskaya; Roman Olekhnovich. 2019. "Hyaluronan-Based Nanofibers: Fabrication, Characterization and Application." Polymers 11, no. 12: 2036.
T.N. Nosenko; V.E. Sitnikova; R.O. Olekhnovich; M.V. Uspenskaya. Application of infrared spectroscopy and multivariant analysis to study of serum for patients with epilepsy. Scientific and Technical Journal of Information Technologies, Mechanics and Optics 2019, 19, 402 .
AMA StyleT.N. Nosenko, V.E. Sitnikova, R.O. Olekhnovich, M.V. Uspenskaya. Application of infrared spectroscopy and multivariant analysis to study of serum for patients with epilepsy. Scientific and Technical Journal of Information Technologies, Mechanics and Optics. 2019; 19 (3):402.
Chicago/Turabian StyleT.N. Nosenko; V.E. Sitnikova; R.O. Olekhnovich; M.V. Uspenskaya. 2019. "Application of infrared spectroscopy and multivariant analysis to study of serum for patients with epilepsy." Scientific and Technical Journal of Information Technologies, Mechanics and Optics 19, no. 3: 402.
T.N. Nosenko; V.E. Sitnikova; R.O. Olekhnovich; M.V. Uspenskaya. Detection of diabetes mellitus type II by infrared spectroscopy and multivariate analysis. Scientific and Technical Journal of Information Technologies, Mechanics and Optics 2019, 19, 202 -208.
AMA StyleT.N. Nosenko, V.E. Sitnikova, R.O. Olekhnovich, M.V. Uspenskaya. Detection of diabetes mellitus type II by infrared spectroscopy and multivariate analysis. Scientific and Technical Journal of Information Technologies, Mechanics and Optics. 2019; 19 (2):202-208.
Chicago/Turabian StyleT.N. Nosenko; V.E. Sitnikova; R.O. Olekhnovich; M.V. Uspenskaya. 2019. "Detection of diabetes mellitus type II by infrared spectroscopy and multivariate analysis." Scientific and Technical Journal of Information Technologies, Mechanics and Optics 19, no. 2: 202-208.
Detection of breast cancer has particular importance for the diagnosis of cancer diseases. This is the most common type of cancer among women. Breast cancer is a malignant tumor of the glandular tissue of the breast. It is proposed to use infrared spectroscopy of blood serum as a simple and quick way to detect breast cancer. The infrared spectra recorded on the attenuated total reflectance accessory, the blood serum of patients and healthy donors differ in the symmetry of the amide band I. The decomposition of the amide I band into its constituent components provides information on the conformational protein subunits present in the blood serum of patients.
Mariia Kotkova; Vera Sitnikova; Tatiana Nosenko; Tatiana Kotkova; Mayya Uspenskaya; Roman Olekhnovich. Spectroscopic Study of Blood Serum of Patients With Breast Cancer. 2018 IEEE-EMBS Conference on Biomedical Engineering and Sciences (IECBES) 2018, 657 -660.
AMA StyleMariia Kotkova, Vera Sitnikova, Tatiana Nosenko, Tatiana Kotkova, Mayya Uspenskaya, Roman Olekhnovich. Spectroscopic Study of Blood Serum of Patients With Breast Cancer. 2018 IEEE-EMBS Conference on Biomedical Engineering and Sciences (IECBES). 2018; ():657-660.
Chicago/Turabian StyleMariia Kotkova; Vera Sitnikova; Tatiana Nosenko; Tatiana Kotkova; Mayya Uspenskaya; Roman Olekhnovich. 2018. "Spectroscopic Study of Blood Serum of Patients With Breast Cancer." 2018 IEEE-EMBS Conference on Biomedical Engineering and Sciences (IECBES) , no. : 657-660.
Diabetes is a group of metabolic disorders in which there are high blood sugar levels over a prolonged period. Type 2 DM begins with insulin resistance, a condition in which cells fail to respond to insulin properly. Diabetes type 2 accounts for about 90% of cases. Therefore, the development of new methods for the diagnosis of diabetes is relevant. In this article, the method of IR spectroscopy in combination with multidimensional analysis is proposed as a diagnostic method. Cluster analysis, partial least-squares (PLS) regression, principal component analysis (PCA) are performed to assess the correct diagnosis probability. Each of the three presented methods gives the best results when using the first derivative of the spectra in the whole range of the spectrum. Despite the fact that in this paper the PLS method differentiates samples with only 81% probability, the use of PLS methods is preferable, since in this case a training set of samples is used for which the desired characteristics are known.
Vera Sitnikova; Tatiana Nosenko; Roman Olekhnovich; Mayya Uspenskaya. Multivariate Analysis for Diagnostic of Type II Diabetes Mellitus. 2018 IEEE-EMBS Conference on Biomedical Engineering and Sciences (IECBES) 2018, 642 -646.
AMA StyleVera Sitnikova, Tatiana Nosenko, Roman Olekhnovich, Mayya Uspenskaya. Multivariate Analysis for Diagnostic of Type II Diabetes Mellitus. 2018 IEEE-EMBS Conference on Biomedical Engineering and Sciences (IECBES). 2018; ():642-646.
Chicago/Turabian StyleVera Sitnikova; Tatiana Nosenko; Roman Olekhnovich; Mayya Uspenskaya. 2018. "Multivariate Analysis for Diagnostic of Type II Diabetes Mellitus." 2018 IEEE-EMBS Conference on Biomedical Engineering and Sciences (IECBES) , no. : 642-646.
Polymeric polyelectrolyte hydrogel composites based on a copolymer of acrylic acid and acrylamide are synthesized. The composites are filled with bentonite (1 to 5 wt %). The kinetics of the collapse of hydrogel composites in aqueous solutions of salts of alkali and alkaline-earth metals at a constant temperature of 25°C are studied. Gravimetry is used to study the kinetics of the swelling and collapse of a gel of the cross-linked copolymer of acrylic acid and acrylamide, and its composites with bentonite in aqueous solutions of salts of mono- and divalent metals. It is found that the presence of bentonite prevents the collapse of composites based on acrylic hydrogels in aqueous solutions of electrolytes, due to the steric and electrostatic interactions between filler particles. By comparing these two kinetic models, it is shown that Peleg’s kinetic model best describes the experimental data on the collapse of the polymer hydrogel composite in aqueous solutions of metal salts. It is established that the kinetic constant of hydrogel collapse does not depend on the radius of metal ions at equal concentrations of the studied salts in a solution.
E. O. Samuilova; V. E. Sitnikova; Roman Olekhnovich; M. V. Uspenskaya. Studying the Collapse of Bentonite-Containing Composites Based on Acrylic Copolymers. Russian Journal of Physical Chemistry A 2018, 92, 1602 -1608.
AMA StyleE. O. Samuilova, V. E. Sitnikova, Roman Olekhnovich, M. V. Uspenskaya. Studying the Collapse of Bentonite-Containing Composites Based on Acrylic Copolymers. Russian Journal of Physical Chemistry A. 2018; 92 (8):1602-1608.
Chicago/Turabian StyleE. O. Samuilova; V. E. Sitnikova; Roman Olekhnovich; M. V. Uspenskaya. 2018. "Studying the Collapse of Bentonite-Containing Composites Based on Acrylic Copolymers." Russian Journal of Physical Chemistry A 92, no. 8: 1602-1608.
Roman Olekhnovich. STUDY OF THE KINETICS OF THERMAL DEGRADATION OF POLYMER COMPOSITES BASED ON POLYVINYLCHLORIDE FILM AND BIOPOLYMER FILLER. 18th International Multidisciplinary Scientific GeoConference SGEM2018, Energy and Clean Technologies 2018, 1 .
AMA StyleRoman Olekhnovich. STUDY OF THE KINETICS OF THERMAL DEGRADATION OF POLYMER COMPOSITES BASED ON POLYVINYLCHLORIDE FILM AND BIOPOLYMER FILLER. 18th International Multidisciplinary Scientific GeoConference SGEM2018, Energy and Clean Technologies. 2018; ():1.
Chicago/Turabian StyleRoman Olekhnovich. 2018. "STUDY OF THE KINETICS OF THERMAL DEGRADATION OF POLYMER COMPOSITES BASED ON POLYVINYLCHLORIDE FILM AND BIOPOLYMER FILLER." 18th International Multidisciplinary Scientific GeoConference SGEM2018, Energy and Clean Technologies , no. : 1.
Roman Olekhnovich; Konstantin Gennadievich Gusev; Alexandr Leonidovich Ishevskiy; Mayya Valerievna Uspenskaya; Inna Evgenievna Strelnikova; S. Boukalova; C. A. Brebbia. EFFECT OF FRIENDLY SORBENTS ON BASE POLYMER NANOCOMPOSITES. Water Resources Management IX 2017, 1, 39 -45.
AMA StyleRoman Olekhnovich, Konstantin Gennadievich Gusev, Alexandr Leonidovich Ishevskiy, Mayya Valerievna Uspenskaya, Inna Evgenievna Strelnikova, S. Boukalova, C. A. Brebbia. EFFECT OF FRIENDLY SORBENTS ON BASE POLYMER NANOCOMPOSITES. Water Resources Management IX. 2017; 1 ():39-45.
Chicago/Turabian StyleRoman Olekhnovich; Konstantin Gennadievich Gusev; Alexandr Leonidovich Ishevskiy; Mayya Valerievna Uspenskaya; Inna Evgenievna Strelnikova; S. Boukalova; C. A. Brebbia. 2017. "EFFECT OF FRIENDLY SORBENTS ON BASE POLYMER NANOCOMPOSITES." Water Resources Management IX 1, no. : 39-45.
Roman Olekhnovich. PREPARATION AND PROPERTIES OF ACRYLIC COMPOSITES BASED ON PROTEIN FILLER "BIOSTIM". 17th International Multidisciplinary Scientific GeoConference SGEM2017, Energy and Clean Technologies 2017, 1 .
AMA StyleRoman Olekhnovich. PREPARATION AND PROPERTIES OF ACRYLIC COMPOSITES BASED ON PROTEIN FILLER "BIOSTIM". 17th International Multidisciplinary Scientific GeoConference SGEM2017, Energy and Clean Technologies. 2017; ():1.
Chicago/Turabian StyleRoman Olekhnovich. 2017. "PREPARATION AND PROPERTIES OF ACRYLIC COMPOSITES BASED ON PROTEIN FILLER "BIOSTIM"." 17th International Multidisciplinary Scientific GeoConference SGEM2017, Energy and Clean Technologies , no. : 1.
In the work were examined IR spectra of serum blood of donor and patient with multiple myeloma. Describes a method of rapid diagnosis of patients with multiple myeloma. It demonstrated its applicability on the basis of the phase trajectories of the optical spectra of donor-patient pairs.
T. Nosenko; L. Plotnikova; Roman Olekhnovich; M. Uspenskaya; A. Garifullin; Sergey Voloshin. Express diagnostics of multiple myeloma by IR spectra of blood serum. 2016 IEEE EMBS Conference on Biomedical Engineering and Sciences (IECBES) 2017, 583 -585.
AMA StyleT. Nosenko, L. Plotnikova, Roman Olekhnovich, M. Uspenskaya, A. Garifullin, Sergey Voloshin. Express diagnostics of multiple myeloma by IR spectra of blood serum. 2016 IEEE EMBS Conference on Biomedical Engineering and Sciences (IECBES). 2017; ():583-585.
Chicago/Turabian StyleT. Nosenko; L. Plotnikova; Roman Olekhnovich; M. Uspenskaya; A. Garifullin; Sergey Voloshin. 2017. "Express diagnostics of multiple myeloma by IR spectra of blood serum." 2016 IEEE EMBS Conference on Biomedical Engineering and Sciences (IECBES) , no. : 583-585.
In this work, the formation of hollow-type microchannels in the bulk of a photostructurable glass of the brand Foturan is proposed. It is based on the chemical dissolution of crystallized areas, which are formed as a result of the action of picosecond laser pulses and photothermal treatment produced by CO2 laser irradiation. A speed of formation of microchannels was estimated. Microchannels formation features at each stage of laser irradiation are discussed, and the dependence of microchannels characteristics (size, shape and roughness of inner walls) on laser processing and chemical etching parameters were evaluated as well.
M. M. Sergeev; V. P. Veiko; E. Y. Tiguntseva; Roman Olekhnovich. Picosecond laser fabrication of microchannels inside Foturan glass at CO2 laser irradiation and following etching. Optical and Quantum Electronics 2016, 48, 485 .
AMA StyleM. M. Sergeev, V. P. Veiko, E. Y. Tiguntseva, Roman Olekhnovich. Picosecond laser fabrication of microchannels inside Foturan glass at CO2 laser irradiation and following etching. Optical and Quantum Electronics. 2016; 48 (11):485.
Chicago/Turabian StyleM. M. Sergeev; V. P. Veiko; E. Y. Tiguntseva; Roman Olekhnovich. 2016. "Picosecond laser fabrication of microchannels inside Foturan glass at CO2 laser irradiation and following etching." Optical and Quantum Electronics 48, no. 11: 485.
A method for the analysis of microbial “growth curves” by real-time recording of changes in the impedance electrical conductance of the medium from multiple samples in parallel is described; these changes arise from metabolic processes taking place in the test microorganisms in the samples. Results obtained from practical application of the impedance biotesting method for analysis of the antibacterial activity of the aseptic agent chlorhexidine bigluconate are presented, along with results obtained using solutions of a catholyte and an anolyte obtained by processing 1% NaCl and Na2SO4 solutions in a specially constructed 2-liter eletrolyzer for 25 min with a current of I = 7 A and a voltage of V = 28 V.
V. S. Sibirtsev; I. A. Naumov; E. É. Kuprina; Roman Olekhnovich. Use of Impedance Biotesting to Assess the Actions of Pharmaceutical Compounds on the Growth of Microorganisms. Pharmaceutical Chemistry Journal 2016, 50, 481 -485.
AMA StyleV. S. Sibirtsev, I. A. Naumov, E. É. Kuprina, Roman Olekhnovich. Use of Impedance Biotesting to Assess the Actions of Pharmaceutical Compounds on the Growth of Microorganisms. Pharmaceutical Chemistry Journal. 2016; 50 (7):481-485.
Chicago/Turabian StyleV. S. Sibirtsev; I. A. Naumov; E. É. Kuprina; Roman Olekhnovich. 2016. "Use of Impedance Biotesting to Assess the Actions of Pharmaceutical Compounds on the Growth of Microorganisms." Pharmaceutical Chemistry Journal 50, no. 7: 481-485.