1,217 research outputs found
Development of scientific school of transport mechanics: artistic legacy of YE. P. Blokhin
Get PDFPurpose. Development of domestic and global transport science occurred due to the contributions of many scientists and practicing engineers. The purpose of our study is the analysis of scientific documentary legacy of YE. P. Blokhin, Doctor of Technical Sciences, Professor of Dnipropetrovsk National University of Railway Transport named after Academician V. Lazaryan and identifying his place and role in the development of modern railway transport. Methodology. Application of problem-chronological, comparative, descriptive historical methods of research, systematization and analysis of scientific papers allowed the authors to submit the actual history of the railway transport development (1950-2013) through the prism of YE. P. Blokhin scientific activity. We identified 6 main periods of his scientific activity. Findings. It was found out that the overall intellectual plant of the scientist includes 555 scientific papers (written personally and co-authored) in domestic and foreign publications on key issues of mechanics and operation of railway rolling stock. Artistic legacy of YE. P. Blokhin includes monographs, articles, reports, patents, author certificate, etc. It was found that the epistolary legacy of scientist, archive materials, his personal diaries, reference list of works of his students and followers are almost unexplored. Originality. Authors of the work for the first time in the history of science and technology of Ukraine conducted a complex study of the scientific legacy of YE. P. Blokhin in the context of railway transport. It is proved that the ideas, research, scientific works, implemented projects, numerous students and followers of YE. P. Blokhin are important factors, confirming a significant contribution of the scientist to the global engineering and transport science. Practical value. The work can be used to create historiographical papers and textbooks, to study the issues of formation and development of the scientific school for transport mechanics and university science ofUkraine in the railway branch, in the course of lectures on the subjects «History of railway transport development» and «Introduction to the profession»
RAMAN SPECTROSCOPY OF PHASE TRANSITIONS IN NEMATIC LIQUID CRYSTALS
No full text1. V. Ye, Pogorelov, I. B. Estrela-Llops, Mol. Cryst. Liq. Cryst. 265, 237 (1995) 2. V. Ye, Pogorelov, I. B. Estrela-Llops, J. Mol. Struct. 348, 269 (1995)Author Institution: Department of Physics, Kiev Taras Shevchenko's UniversityThe systematic investigations of the connection of polymorphism spectral developments with thermal pre-history of nematic liquid crystal (LC) have been performed. Regularities connecting parameters of Raman bands with structural peculiarities of MBBA in different phases obtained at various rates of preliminary cooling of sample have been found [1,2]. Using these connections the conformational angles, energetic barriers between different conformers, order of nonarrangement of various phases, quantitative phase composition have been calculated. It has been made the analysis of forming mechanisms of Raman bands contours with using of theory of Raman effect in condensed phase. In spite of the difference of heterogeneous broadening nature for nematics and amorphous phases the proximity of Raman bands widths for these phases is stipulated one of parameters of corresponding averaging statistic distributions. The method of identification and prognostic of structural evolution of phase states for wide class of LC have been proposed
Valleriola bui Li, Jin & Ye 2023, sp. nov.
No full textValleriola bui Li, Jin & Ye, sp. nov. (Figs. 4, 9, 22–24, 32, 43–45, 49, 50, 57–59, 63) Meterial examined. Holotype: male, LAOS, Vientiane, Vang Veihg, Kaeng Yui Waterfall, 15 November 2018, Zhen Ye leg. (NKUM). Paratypes: 1 male, 2 females, LAOS, Vientiane, same data as holotype (NKUM); 3 males, 3 females, THAILAND, Nong Bua Lamphu, Na Klang, 13 August 2018, Zhen Ye leg. (NKUM). Diagnosis. Body length: 4.75–4.90, ground color dark-brown with yellowish spots and stripes dorsally. Head mainly yellowish except the frons and the posterior area around compound eyes black. Abdominal segments black in male but yellowish-white in female. Comparative notes. Valleriola bui sp. nov. appears to be closely related to V. javanica. However, V. bui sp. nov. can be distinguished by its remarkable coloration of head: most of the head of V. bui sp. nov. is yellowish except the black frons and the posterior area around compound eyes, whereas the head of V. javanica is mainly blackish and only the clypeus and post-ocellar spot are yellowish (Figs. 22–27). Moreover, V. bui sp. nov. has other characteristics different from V. javanica: the stripes and spots on the sub-basal area of the hemelytra are relatively ambiguous, without distinct margins as in V. javanica (Fig. 32, 33); the stripe on the clavus is isolated and not merged with the apical spots (Fig. 32); the paramere is mushroom-like and apically extended with a small process on the inner side, without hook-like structure (Figs. 57–59). Description. Male. Color: ground color dark-brown (Figs. 4, 9). Head mainly yellowish, clypeus orange, venter of head yellowish, frons and posterior area around compound eyes black, area behind ocelli with an orange spot; bucculae yellowish; labiomere I completely hidden beneath bucculae, labiomere II yellowish-white, labiomere III yellowish-brown, labiomere IV brown to blackish-brown; compound eyes and ocelli silvery; antennomere I yellowish, antennomeres II–IV dark-brown (Figs. 4, 9, 22–24). Pronotum mainly dark-brown, collar and callus blackish, median part of collar with an orange spot, merged with the spot behind ocelli, posterior lobe of pronotum dark-brown, posterior margin yellowish, median part with a yellowish stripe, posterior angles of pronotum shinning black; scutellum blackish, with a yellowish apex (Figs. 4, 9). Hemelytra mainly brown, margins of clavus yellowishbrown, clavus with a yellowish stripe in middle and a spot on apex, lateral margin of hemelytra pale, spots and stripes on corium and membrane pale yellowish, middle part of corium with a spot on the inner side of R+M vein, r cell and membrane cell IV with pale yellowish spots (Fig. 32). Legs yellowish, fore femur with a wide, brown stripe on outer side; all tibiae and tarsi infuscated (Figs. 4, 43–45). Abdominal segments black, with white sutures (Fig. 49). Paramere yellowish, with a dark-brown apex (Figs. 57–59). Structural characteristics: body elongated, bearing sparse, short, pale setae (Figs. 4, 9). Head short and wide, dorsally bearing dense, short pubescence except two circular areas, venter of head with three spines beneath each compound eye; compound eyes distinctly large, without sparse, short, spine-like setae; bucculae clearly visible; labium short, labiomere I completely hidden beneath bucculae, labiomere II with two spines on each side; antennomere I short and stout, antennomeres II–IV extremely long and slender (Figs. 4, 9, 22–24). Pronotum sub-triangular, densely punctured except callus; callus relatively rough, distinctly swollen, with a deep impression on median line; posterior angles of pronotum glossy, without punctures; scutellum triangular, medially with a sub-circular depression, laterally serrated, with a distinct process on each side (Figs. 4, 9). Hemelytra elongated, clavus and sc cell of corium with dense punctures; membrane opaque, with four closed cells (Fig. 32). Legs long and slender, fore coxa strong, slightly elongated, with two long spines anteriorly directed; fore femur incrassate, ventrally with seven large spines (three spines on outer side and four on inner side) and two rows of dense, small, black spines (Figs. 43–45); fore tibia ventrally with a row of dense, brown spines. Middle and hind legs slender, distinctly elongated. Abdomen slender, tubular-like (Fig. 49). Paramere small, apically with a mushroom-like extension, covered by dense punctures and long, curved hairs, with a spine-like process on inner side (Figs. 57–59). Female. Color and structural characteristics similar to male, but abdominal segments of female are yellowishwhite except abdominal segment VII mainly brown (Fig. 50). Genital segments of female hidden in abdominal segment VII, not visible in vitro. Measurements. Male. Body length: 4.75–4.90 (holotype: 4.80), body width across hemelytra: 1.25–1.35. Head width: 1.25–1.30, head length: 0.65–0.68, head width about 1.92 times head length; antenna about 1.31 times as long as body, length of antennomeres I–IV: 0.38, 0.90, 1.90, 2.88. Pronotum width across collar: 0.49–0.51, pronotum width across posterior angles: 1.15–1.20, pronotum length: 0.98–1.00; scutellum width: 0.53–0.56, scutellum length: 0.54–0.55; length of femur, tibia and tarsus (tarsomeres I+II+III): fore leg: 1.85, 1.48 and 0.42 (0.06+0.23+0.13), middle leg: 1.88, 2.10 and 0.50 (0.09+0.25+0.16), hind leg: 2.30, 3.00 and 0.52 (0.10+0.23+0.19). Female. Body length: 4.90–5.00, body width across hemelytra: 1.30–1.35. Head width: 1.29–1.31, head length: 0.63–0.64, head width about 2.06 times head length; antenna about 1.18 times as long as body, length of antennomere I–IV: 0.38, 0.86, 1.85, 2.75. Pronotum width across collar: 0.50–0.54, pronotum width across posterior angles: 1.20–1.30; pronotum length: 0.98–1.05; scutellum width: 0.56–0.60, scutellum length: 0.55–0.56; length of femur, tibia and tarsus (tarsomeres I+II+III): fore leg: 1.85, 1.48 and 0.38 (0.09+0.16+0.13), middle leg: 1.98, 2.10 and 0.53 (0.09+0.24+0.20), hind leg: 1.01, 1.60 and 0.57 (0.09+0.25+0.23). Etymology. This species is named in honor of Prof. Wenjun Bu for his outstanding contributions to the study of taxonomy, phylogeny and biogeography of Heteroptera, on the occasion of his 60th birthday. Remarks. Valleriola bui sp. nov. is sexually dimorphic in appearance, with the male having a black abdomen whereas that of females is yellowish-white (Figs. 49, 50). The third author (DP) has seen additional undescribed species from Thailand and Vietnam, to be described in a forthcoming work, that also share this interesting sexual dimorphism in regard to abdominal pigmentation. Distribution. Laos, Thailand (Fig. 61).Published as part of Li, Zihe, Jin, Zezhong, Polhemus, Dan A. & Ye, Zhen, 2023, Two new species of Valleriola (Hemiptera: Heteroptera: Leptopodidae) and taxonomic notes on the tribe Leptopodini Brullé, 1836 from East and Southeast Asia, pp. 329-344 in Zootaxa 5256 (4) on pages 342-343, DOI: 10.11646/zootaxa.5256.4.2, http://zenodo.org/record/775510
A summary of photogrammetric activities and development in Canada from January 1, 1956, to December 31 1959. Commission V: non-topographic applications
No full textAuthor affiliated with NRC Division of Applied Physics at time of publicationNRC publication: Ye
RAMAN INVESTIGATION OF DYNAMICS OF POLYMORPHOUS TRANSFORMATIONS IN SUPERCOOLED LIQUID CRYSTALS
No full textV. Ye. Pogorelov, Solid State Physics, 33, 1906 (1991).Author Institution: Kiev Taras Shevchenko's University, Kiev 252127, Ukraine.Phase transitions in liquid crystals (LC) influence on dinamic of intermolecular vibrations and it is manifested in changes of frequencies and shape of corresponding vibrational bands. Investigation results of temperature variation of Raman spectra of supercooled MBBA in frequencies range corresponding intermolecular vibrations are presented in the present report. The dynamics and kinetics of phase transitions has been investigated. According to temperature variations of the widths and Raman band shifts it was obtained information about the temperature and character of polymorphous transitions, the dynamics of conformational angle between plane of ring and the C=N-C group under polymorphous transitions, the times of structural relaxation
Physics of Atomic Nuclei V. 63, I. 02
No full textPhysics of Atomic Nuclei -- February 2000
Volume 63, Issue 2, pp. 145-321
NUCLEI EXPERIMENT
Observation of an Anomaly in the Angular Distribution of Cumulative Hadrons near the Backward Direction
L. S. Vorobiev, V. B. Gavrilov, Yu. G. Grishuk, P. V. Degtyarenko, Yu. V. Efremenko, B. V. Zagreev, M. V. Kossov, S. V. Kuleshov, G. A. Leksin, N. A. Pivnyuk, V. S. Serov, A. V. Smirnitsky, B. B. Shvartsman, and S. M. Shuvalov
pp. 145-150 Full Text: PDF (120 kB)
Production of Light Nuclei in the Reactions of Protons with Separated Tin Isotopes
A. S. Danagulyan, J. Adam, A. R. Balabekyan, V. G. Kalinnikov, V. I. Stegailov, V. K. Rodionov, V. I. Fominikh, and J. Frana
pp. 151-155 Full Text: PDF (74 kB)
Self-Similar Properties of Collisions between Light Nuclei
V. V. Glagolev, J. Hlavácová, G. Martinská, J. Urbán, and M. Vytykácová
pp. 156-160 Full Text: PDF (91 kB)
NUCLEI THEORY
Manifestation of Pairing Effects in the Cross Section for 238Pu Fission Induced by Neutrons
V. M. Maslov
pp. 161-169 Full Text: PDF (129 kB)
One-Nucleon Spectroscopic Factors and Momentum Distributions of Nucleons in the 6Li and 9Be Nuclei within Three-Body Models
M. A. Zhusupov, K. A. Zhusupova, and E. T. Ibraeva
pp. 170-178 Full Text: PDF (118 kB)
Multichannel Features of the Continuous Spectrum of 6He
G. F. Filippov and S. V. Mokhov
pp. 179-190 Full Text: PDF (141 kB)
Relation between Signature Splitting in Rotational Bands of Odd Nuclei and the Amplitude of the Omega = 1/2 Component
R. V. Jolos
pp. 191-194 Full Text: PDF (48 kB)
Supermultiplet Symmetry and Near-Threshold Levels in Systems Featuring Two or Three Extremely Light Clusters
V. M. Lebedev, V. G. Neudatchin, and A. A. Sakharuk
pp. 195-203 Full Text: PDF (120 kB)
Relativistic Expressions for Current Electric Moments of Nuclei
A. J. Silenko
pp. 204-209 Full Text: PDF (80 kB)
Interpretation of an Empirical Systematics of Coherence Widths
G. A. Prokopets
pp. 210-215 Full Text: PDF (85 kB)
Microscopic Calculation of Low-Energy Deuteron–Deuteron Scattering on the Basis of the Cluster-Reduction Method
I. N. Filikhin and S. L. Yakovlev
pp. 216-222 Full Text: PDF (88 kB)
Calculation of the Binding Energy and of the Parameters of Low-Energy Scattering in the Lambdanp System
I. N. Filikhin and S. L. Yakovlev
pp. 223-228 Full Text: PDF (125 kB)
Breakup of Exotic Nuclei and Correlations of Halo Neutrons
G. D. Alkhazov
pp. 229-232 Full Text: PDF (60 kB)
ELEMENTARY PARTICLES AND FIELDS THEORY
Anti-helium Flux As a Signature for Antimatter Globular Clusters in Our Galaxy
K. M. Belotsky, Yu. A. Golubkov, M. Yu. Khlopov, R. V. Konoplich, and A. S. Sakharov
pp. 233-239 Full Text: PDF (92 kB)
Production of Ultrarelativistic Positronium Beams in gammae Interactions
A. P. Martynenko and V. A. Saleev
pp. 240-243 Full Text: PDF (73 kB)
Semileptonic Decays of Pseudoscalar Mesons in the Instant Form of Relativistic Hamiltonian Dynamics
E. V. Balandina, A. F. Krutov, V. E. Troitsky, and O. I. Shro
pp. 244-253 Full Text: PDF (130 kB)
Implications of Collider Experiments for Detecting Cold Dark Matter
V. A. Bednyakov
pp. 254-259 Full Text: PDF (73 kB)
Transverse Muon Polarization in the K0mu 3 Decay Induced by Electromagnetic Final-State Interaction
V. P. Efrosinin and Yu. G. Kudenko
pp. 260-263 Full Text: PDF (62 kB)
Pionic Decay of a Possible Dibaryon d' and Quark Models of piB and pid' Couplings
I. T. Obukhovsky and A. I. Obukhovsky
pp. 264-273 Full Text: PDF (129 kB)
Spectroscopy of Doubly Heavy Baryons
S. S. Gershtein, V. V. Kiselev, A. K. Likhoded, and A. I. Onishchenko
pp. 274-286 Full Text: PDF (158 kB)
Subthreshold and Near-Threshold K+-Meson Production on Light Nuclei by Protons
É. Ya. Paryev
pp. 287-302 Full Text: PDF (218 kB)
Production of Lambda Hypernuclei in pi+A Interactions
Ye. S. Golubeva and A. S. Iljinov
pp. 303-309 Full Text: PDF (120 kB)
Two-Photon Decay of the Bs Meson in Supersymmetric Models
G. G. Devidze and G. R. Jibuti
pp. 310-317 Full Text: PDF (127 kB)
Two-Center Problem for the Dirac Equation
V. I. Matveev, D. U. Matrasulov, and H. Yu. Rakhimov
pp. 318-321 Full Text: PDF (57 kB)Archived web conten
Dynamics of pathomorphological changes in the structural organization of the intervertebral disc at the end of the seventh and fourteenth day of experimental opioid exposure at the ultrastructural level
Get PDFPankiv M. V., Paltov Ye. V., Masna Z. Z., Chelpanova I. V., Kovalska M. Ye. Dynamics of pathomorphological changes in the structural organization of the intervertebral disc at the end of the seventh and fourteenth day of experimental opioid exposure at the ultrastructural level. Journal of Education, Health and Sport. 2021;11(08):427-437. eISSN 2391-8306. DOI http://dx.doi.org/10.12775/JEHS.2021.11.08.048
https://apcz.umk.pl/czasopisma/index.php/JEHS/article/view/JEHS.2021.11.08.048
https://zenodo.org/record/5495940
The journal has had 5 points in Ministry of Science and Higher Education parametric evaluation. § 8. 2) and § 12. 1. 2) 22.02.2019.
© The Authors 2021;
This article is published with open access at Licensee Open Journal Systems of Nicolaus Copernicus University in Torun, Poland
Open Access. This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium,
provided the original author (s) and source are credited. This is an open access article licensed under the terms of the Creative Commons Attribution Non commercial license Share alike.
(http://creativecommons.org/licenses/by-nc-sa/4.0/) which permits unrestricted, non commercial use, distribution and reproduction in any medium, provided the work is properly cited.
The authors declare that there is no conflict of interests regarding the publication of this paper.
Received: 02.08.2021. Revised: 16.08.2021. Accepted: 31.08.2021.
UDK:714.616.711-018.3⁄.4:615.212.7]-076.4
Dynamics of pathomorphological changes in the structural organization of the intervertebral disc at the end of the seventh and fourteenth day of experimental opioid exposure at the ultrastructural level
M. V. Pankiv, Ye. V. Paltov, Z. Z. Masna, I. V. Chelpanova, M. Ye. Kovalska
Danylo Halytsky Lviv National Medical University
Pankiv M.V. Danylo Halytsky Lviv National Medical University, Department of Normal Anatomy, Lviv, Ukraine; https: //orcid.org/0000-0002-3714-2577
Paltov Ye.V. Danylo Halytsky Lviv National Medical University, Department of Normal Anatomy, Lviv, Ukraine; https://orcid.org/0000-0002-2622-4753
Masna Z.Z. Danylo Halytsky Lviv National Medical University, Department of Operative Surgery with Topographic Anatomy, Lviv, Ukraine; https://orcid.org/0000-0003-2057-7061
Chelpanova I.V. Danylo Halytsky Lviv National Medical University, Department of Histology, Cytology and Embryology, Lviv, Ukraine; https://orcid.org/ 0000-0001-5215-814X
Kovalska M. Ye. Danylo Halytsky Lviv National Medical University, Department of pathological physiology, Lviv, Ukraine; https://orcid.org/0000-0002-6232-3951
Abstract
In general, the modern literature pays attention to the issues of spine pathology and intervertebral discs. A significant percentage of vertebral disorders - scoliosis, osteochondrosis, spinal disc herniation, etc., occur as a result of exposure to various factors and manifest in changes of the intervertebral discs. The aim of our work was to study at the ultrastructural level the features of pathomorphological manifestations in the structural components of the intervertebral disc at the end of the seventh and fourteenth days of experimental opioid exposure. Materials and methods of research. The objects of the study were 32 sexually mature, white, male rats, weighing 92 - 103 g, aged 4.5 months. Animals were injected with nalbupine intramuscularly once daily (at 10-11 a.m.) for 14 days. The initial dose of nalbuphine was 8 mg/kg during the first week, 15 mg/kg during the second week. It created the conditions of chronic opioid exposure. Before sampling, the animals were withdrawn from the experiment using dibutyl ether. Intervertebral discs of rats were used as a material for ultrastructural study. Ultrastructural specimens were prepared according to the accepted methods. The results of the study. As a result of the sampling after 7 days of opioid exposure we found inhomogeneous osmiophilicity and compaction of the nucleus pulposus matrix in which intensively accumulated osmiophilic grains of glycogen proteoglycans, increased the number of collagen fibers, some of them were heterogeneous. It was also noted the development of moderate degenerative changes in some notochondral cells, which was accompanied by increased vacuolization of the cytoplasm by inhomogeneous compaction of the nucleus and an increase of heterochromatin there. After 14 days necrotic changes in the cells of the nucleus pulposus, as well as the destruction of collagen fibers of the annulus fibrosus were found. In particular, an increase in the amount of heterochromatin in the nucleui of notochondral cells, which was accompanied by a decrease in the volume of the nucleui and inhomogeneous swelling of the cytoplasm. Active fibroblasts were often visualized in the annulus fibrosus. Intense osmiophilicity and thickening of collagen fibers of the annulus fibrosus were observed in some areas of the fibrous ring. Focal destruction of collagen fibers was also noted. In the areas of destruction the fibrils of collagen fibers disintegrated into an inhomogeneous fine-grained stratified mass and were located loosely. Conclusions. At the end of the first week we found that the cytoplasmic processes of chondrocytes decreased in volume, shortened, underwent fragmentation and destruction, some of them detached from the surface of the plasmolemma. At the end of the second week signs of opioid exposure progressed and manifested by an increase in the destruction of cytoplasmic processes in chondrocytes. Also focal destruction of collagen fibers was noted.
Keywords: opioid; intervertebral disc; rat; seventh and fourteenth day
You ke tie jing: Liu juan. v.1
No full text夏鼎著.框18x13公分, 9行24字, 小字雙行同, 左右雙邊, 單黑魚尾, 版心上鐫書名, 中鐫卷次, 下鐫頁次."光緒二十二季春八月廣雅書局校刊"--內封面背頁.On double leaves, oriental style.Xia Ding zhu.Kuang 18x13 gong fen, 9 hang 24 zi, xiao zi shuang hang tong, zuo you shuang bian, dan hei yu wei, ban xin shang juan shu ming, zhong juan juan ci, xia juan ye ci."Guangxu er shi er ji chun ba yue Guang ya shu ju jiao kan"--Nei feng mian bei ye
The Image of Witte in Early Soviet Historiography: Tarle vs Romanov (on Ye. V. Tarle’s 150th Birthday)
Get PDFThe article was submitted on 28.12.2024.Выход в свет воспоминаний графа С. Ю. Витте в год десятилетия свержения монархии в России вызвал всплеск интереса к этим событиям и фигурам прошлого в советской России. Е. В. Тарле оказался первым, кто подготовил небольшую книжку, посвященную дипломатической деятельности Витте. Несмотря на то, что автор опирался в основном на мемуары своего героя и использовал небольшое количество источников, он сумел дать объективный красочный портрет графа на фоне общей дипломатической истории Европы начала ХХ в., преимущественно русско-германских отношений. Однако в «виттеведении» пальма первенства признается, как правило, за другим историком – Б. А. Романовым, который даже раньше, чем Тарле, начал готовить обстоятельные документальные комментарии к воспоминаниям Витте. По мнению автора, забвение книжки Тарле, написанной в расчете на массового читателя, а не на специалиста, как работы Романова, несправедливо: академик продемонстрировал в ней не только тонкое понимание им эпохи, но и первым представил личностную характеристику крупнейшего политического деятеля Российский империи конца XIX – начала ХХ в.The publication of the memoirs of Count S. Yu. Witte and the tenth anniversary of the overthrow of the monarchy in Russia caused a surge of interest in these events and in the figures of the past in Soviet Russia. Ye. V. Tarle was the first to prepare a small book dedicated to Witte’s diplomatic activity. Despite relying primarily on the memoirs of his character and utilising only a limited number of sources, the author successfully presented an objective and colourful portrait of the count. This portrait was set against the broader context of the diplomatic history of Europe in the early twentieth century, with a particular focus on Russian-German relations. However, in “Witte studies”, B. A. Romanov is usually regarded as a pioneer who began to prepare detailed documentary commentaries on Witte’s memoirs even earlier than Tarle. It appears that the lack of recognition for Tarle’s book, which was intended for a general audience and not for experts like Romanov’s texts, is unjust. The academician demonstrated not only his nuanced understanding of the era but also broke new ground by presenting a personal profile of the most prominent political figure of the Russian Empire of the late nineteenth and early twentieth centuries
Nitrogen Dioxide Gas Sensor Based on Monolayer SnS: A First-Principle Study
No full textThe sensing behavior of monolayer tin sulfide (SnS) for four gas molecules (NH3, NO2, CO, and H2O) are studied by the first-principle calculation based on density-functional theory. We calculate adsorption energy, adsorption distance, and Hirshfeld charge to estimate the adsorption ability of monolayer SnS for these gas molecules. The results demonstrate that all the gas molecules show physisorption nature. We further calculate the current-voltage (I -V ) curves using the nonequilibrium Green's function formalism for evaluating the NO2 gas sensing properties. The monolayer SnS is found to be strongly sensitive to NO2 molecule dependent on moderate adsorption energy, excellent charge transfer, and significant change of I -V property before and after gas adsorption. Therefore, we suggest that monolayer SnS can be a prominent candidate for application as NO2 gas sensor.Accepted author manuscriptElectronic Components, Technology and Material
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