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Additional Iron Ions Binding Sites in Hemoglobin: XANES Modeling 血红蛋白中的其他铁离子结合位点：XANES 建模
IF 0.8 4区 物理与天体物理
Optics and Spectroscopy Pub Date : 2024-09-11 DOI: 10.1134/S0030400X24040131
E. V. Pronina, M. A. Kremennaya, V. Yu. Lysenko, G. E. Yalovega
{"title":"Additional Iron Ions Binding Sites in Hemoglobin: XANES Modeling","authors":"E. V. Pronina,&nbsp;M. A. Kremennaya,&nbsp;V. Yu. Lysenko,&nbsp;G. E. Yalovega","doi":"10.1134/S0030400X24040131","DOIUrl":"10.1134/S0030400X24040131","url":null,"abstract":"<p>The contributions of additional Fe-binding sites and heme iron to the experimental spectrum of urea-influenced hemoglobin were evaluated based on theoretical analysis of X-ray absorption spectra. The theoretical Fe <i>K</i>-edge X-ray absorption spectra were calculated for structural models of the supposed additional Fe binding sites and heme. Linear combination fit of theoretical spectra showed that in treated hemoglobin iron ions are more likely to be in the additional Fe-binding sites, which is surrounded by the following amino acids: cysteine-93, histidine-146, and asparagine-94 (Cys93, His 146, Asp 94).</p>","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":"132 4","pages":"399 - 402"},"PeriodicalIF":0.8,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Microwave Diagnostic Complex for Cold Atmospheric Plasma Jets 冷大气等离子体喷流微波诊断综合系统
IF 0.8 4区 物理与天体物理
Optics and Spectroscopy Pub Date : 2024-09-11 DOI: 10.1134/S0030400X24030019
A. M. Astafiev, A. M. Altmark, N. A. Lesiv, A. S. Chirtsov
{"title":"Microwave Diagnostic Complex for Cold Atmospheric Plasma Jets","authors":"A. M. Astafiev,&nbsp;A. M. Altmark,&nbsp;N. A. Lesiv,&nbsp;A. S. Chirtsov","doi":"10.1134/S0030400X24030019","DOIUrl":"10.1134/S0030400X24030019","url":null,"abstract":"<p>A system for microwave diagnostics of low-temperature non-stationary atmospheric plasma jets is proposed, the principle of operation of which is based on the registration of changing in the quality factor of the main mode of the electric type of a cylindrical microwave cavity resonator. The time dependences of the average volumetric conductivity of a plasma jet of a barrier discharge in a helium flow are measured. The discharge was powered from an alternating voltage source with a frequency of 9 kHz. Such a low frequency of the supply voltage made it possible to distinguish individual pulses of breakdowns of the barrier discharge.</p>","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":"132 3","pages":"203 - 206"},"PeriodicalIF":0.8,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cubic Phase Gate Operation to Decrease the Error of Two-Mode Transformations 降低双模变换误差的立体相位门操作
IF 0.8 4区 物理与天体物理
Optics and Spectroscopy Pub Date : 2024-09-11 DOI: 10.1134/S0030400X24030196
E. R. Zinatullin, S. B. Korolev, T. Yu. Golubeva
{"title":"Cubic Phase Gate Operation to Decrease the Error of Two-Mode Transformations","authors":"E. R. Zinatullin,&nbsp;S. B. Korolev,&nbsp;T. Yu. Golubeva","doi":"10.1134/S0030400X24030196","DOIUrl":"10.1134/S0030400X24030196","url":null,"abstract":"<p>The paper considers a strategy to decrease the error of the two-mode entanglement transformation Controlled-Z by introducing non-Gaussian nodes in the cluster. Non-Gaussian nodes are obtained by using a cubic phase gate. We have shown that this strategy can significantly decrease the transformation error. The considered implementation of the Controlled-Z operation contains a teleportation scheme with the cubic phase gate. We have shown that the correct selection of phases during measurement allows for lower errors than in the initial teleportation protocol with the cubic phase gate and the original teleportation protocol.</p>","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":"132 3","pages":"310 - 320"},"PeriodicalIF":0.8,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Photon–Photon Scattering in the Atomic Ion Field 原子离子场中的光子-光子散射
IF 0.8 4区 物理与天体物理
Optics and Spectroscopy Pub Date : 2024-09-11 DOI: 10.1134/S0030400X2403010X
A. N. Hopersky, A. M. Nadolinsky, R. V. Koneev
{"title":"Photon–Photon Scattering in the Atomic Ion Field","authors":"A. N. Hopersky,&nbsp;A. M. Nadolinsky,&nbsp;R. V. Koneev","doi":"10.1134/S0030400X2403010X","DOIUrl":"10.1134/S0030400X2403010X","url":null,"abstract":"<p>The analytical structure, absolute values and angular anisotropy of the triple differential cross section of elastic photon–photon scattering in the field of a multicharged neon-like atomic ion are theoretically predicted.</p>","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":"132 3","pages":"257 - 261"},"PeriodicalIF":0.8,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142226995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Spectral Analysis of Epidermal Staphylococcus with Hemolytic Activity Isolated with Mucosa Oral Cavity in Patients with Periodontitis 牙周炎患者口腔黏膜上分离出的具有溶血活性的表皮葡萄球菌的光谱分析
IF 0.8 4区 物理与天体物理
Optics and Spectroscopy Pub Date : 2024-09-11 DOI: 10.1134/S0030400X24030184
E. V. Timchenko, P. E. Timchenko, A. V. Lyamin, I. V. Bazhutova, O. O. Frolov, L. T. Volova, A. V. Zotova, S. S. Ivanov
{"title":"Spectral Analysis of Epidermal Staphylococcus with Hemolytic Activity Isolated with Mucosa Oral Cavity in Patients with Periodontitis","authors":"E. V. Timchenko,&nbsp;P. E. Timchenko,&nbsp;A. V. Lyamin,&nbsp;I. V. Bazhutova,&nbsp;O. O. Frolov,&nbsp;L. T. Volova,&nbsp;A. V. Zotova,&nbsp;S. S. Ivanov","doi":"10.1134/S0030400X24030184","DOIUrl":"10.1134/S0030400X24030184","url":null,"abstract":"<p>The combination scattering spectroscopy method investigated strains of the epidermal staphylococcus with hemolytic activity and without hemolytic activity. The main spectral differences of the studied groups are established. Complex analysis was used to estimate hemolytic activity using combined scattering (SR) spectroscopy and mathematical approaches.</p>","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":"132 3","pages":"307 - 309"},"PeriodicalIF":0.8,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142227019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Generation and Quenching in the XeCl* Excimer Laser Pumped by Mixed Gamma-Neutron Radiation from a Nuclear Reactor 核反应堆伽马-中子混合辐射泵浦的 XeCl* 准分子激光器中的生成和淬火
IF 0.8 4区 物理与天体物理
Optics and Spectroscopy Pub Date : 2024-09-11 DOI: 10.1134/S0030400X2404012X
A. I. Miskevich
{"title":"Generation and Quenching in the XeCl* Excimer Laser Pumped by Mixed Gamma-Neutron Radiation from a Nuclear Reactor","authors":"A. I. Miskevich","doi":"10.1134/S0030400X2404012X","DOIUrl":"10.1134/S0030400X2404012X","url":null,"abstract":"<p>A decrease in the gain of the active medium of a nuclear-pumped excimer laser has been experimentally discovered at the B–X- and C–A-transitions of the XeCl* molecule (308, 352 nm), when the Ar‒Xe–CCl<sub>4</sub> medium is pumped with mixed gamma-neutron radiation nuclear reactor. The effect is due to the quenching effect of secondary electrons formed in the active medium of an excimer laser under the influence of instantaneous gamma radiation. The effect increases significantly with increasing gamma radiation flux density, and the loss coefficient can reach values of ~10<sup>–2</sup>–2 × 10<sup>–2</sup> cm<sup>–1</sup>.</p>","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":"132 4","pages":"391 - 398"},"PeriodicalIF":0.8,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142227022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Parallel Multi-Qubit Evolution in the Quantum Non-Demolition Interaction Protocol 量子非拆迁交互协议中的并行多ubit演化
IF 0.8 4区 物理与天体物理
Optics and Spectroscopy Pub Date : 2024-09-11 DOI: 10.1134/S0030400X24030020
E. N. Bashmakova, E. A. Vashukevich, T. Yu. Golubeva
{"title":"Parallel Multi-Qubit Evolution in the Quantum Non-Demolition Interaction Protocol","authors":"E. N. Bashmakova,&nbsp;E. A. Vashukevich,&nbsp;T. Yu. Golubeva","doi":"10.1134/S0030400X24030020","DOIUrl":"10.1134/S0030400X24030020","url":null,"abstract":"<p>To date, two-qubit quantum logic gates have become an essential part of quantum computing. The study of methods for their implementation is an important practical problem for various quantum optical and information applications. In this paper, we have considered a protocol for multimode quantum non-demolition interaction between an atomic ensemble and multimode light with orbital angular momentum in order to analyze the applicability of this protocol in discrete variables computing. We have developed a multimode interaction Hamiltonian and analyzed the dynamics of field and atomic variables depending on the structure of the driving field. We discuss in detail the procedure for separating qubit noninteracting subsystems on a set of atomic and field modes for various values of the orbital angular momentum of the driving field. Such a procedure helps to reduce the considered protocol to the parallel evolution of two-qubit closed systems.</p>","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":"132 3","pages":"207 - 215"},"PeriodicalIF":0.8,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Multi-Band Electrically Controlled Graphene Patch Antenna of the Terahertz and Far-Infrared Ranges 太赫兹和远红外波段的多波段电控石墨烯贴片天线
IF 0.6 4区 物理与天体物理
Optics and Spectroscopy Pub Date : 2024-08-11 DOI: 10.1134/s0030400x24700383
M. S. Nikitin, G. S. Makeeva
{"title":"Multi-Band Electrically Controlled Graphene Patch Antenna of the Terahertz and Far-Infrared Ranges","authors":"M. S. Nikitin, G. S. Makeeva","doi":"10.1134/s0030400x24700383","DOIUrl":"https://doi.org/10.1134/s0030400x24700383","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The characteristics of a plasmonic graphene patch antenna of rectangular geometry have been simulated in the CST Microwave Studio 2023 software package. It has been shown that the antenna unique property is an electrically controlled multi-band operation (terahertz (THz) and far infrared (IR) ranges) and changing the radiation pattern (RP) toroidal shape to the multi-beam.</p>","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":"77 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2024-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141931838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Probability of Absorption and Emission by an Atom Interacting with Ultrashort Laser Pulses 原子与超短激光脉冲相互作用的吸收和发射概率
IF 0.8 4区 物理与天体物理
Optics and Spectroscopy Pub Date : 2024-08-07 DOI: 10.1134/S0030400X24020012
I. A. Aleksandrov, D. V. Chubukov, N. N. Rosanov
{"title":"Probability of Absorption and Emission by an Atom Interacting with Ultrashort Laser Pulses","authors":"I. A. Aleksandrov,&nbsp;D. V. Chubukov,&nbsp;N. N. Rosanov","doi":"10.1134/S0030400X24020012","DOIUrl":"10.1134/S0030400X24020012","url":null,"abstract":"<p>We consider the process of transition of a two-level system to the excited state with subsequent photon emission in the presence of a laser pulse with a high degree of unipolarity. Within the framework of quantum electrodynamics, we obtain analytical expressions for the differential probability of the process depending on the temporal scales of the problem: laser pulse duration, excited-state lifetime, inverse transition frequency, and inverse frequency of the photon emitted. Besides, we calculate the total absorption probability by integrating over the three-dimensional photon momentum and summing over polarizations. We compare the results obtained for unipolar and bipolar (many-cycle) pulses.</p>","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":"132 2","pages":"81 - 85"},"PeriodicalIF":0.8,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141968730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optical Properties of Materials for Magnesium Plasmonics Described within DFT+U Approach 用 DFT+U 方法描述镁等离子体材料的光学特性
IF 0.8 4区 物理与天体物理
Optics and Spectroscopy Pub Date : 2024-08-07 DOI: 10.1134/S0030400X24020085
V. A. Durymanov, L. A. Avakyan, V. V. Srabionyan, D. S. Rubanik, L. A. Bugaev
{"title":"Optical Properties of Materials for Magnesium Plasmonics Described within DFT+U Approach","authors":"V. A. Durymanov,&nbsp;L. A. Avakyan,&nbsp;V. V. Srabionyan,&nbsp;D. S. Rubanik,&nbsp;L. A. Bugaev","doi":"10.1134/S0030400X24020085","DOIUrl":"10.1134/S0030400X24020085","url":null,"abstract":"<p>The most widely used and applied plasmonic materials, namely silver and gold, has limitations due to their high cost and restriction on the spectral position and shape of the plasmon resonance. This remains true for bimetallic silver–gold nanoparticles. Higher flexibility is required, in particular, for the design of broadband absorbers of light, and for this task the metals other than silver and gold are considered. In this paper we study the optical extinction spectra of alloy and composite nanoparticles containing magnesium and gold. The dielectric properties are calculated within the approximation of independent particles (IPA) based on the electronic structure obtained using density functional theory (DFT) with Hubbard correction (DFT+U). The obtained spectra of optical extinction of magnesium–gold alloy nanoparticles demonstrate that the most sensitive to the composition is the region of wavelengths below 500 nm. Simultaneously, the position of the plasmon resonance predicted by Vegard’s law is higher than obtained from accurate DFT+U based calculations. We managed to describe the experimental optical extinction spectra of the glass sample containing gold and magnesium atoms using the calculated spectra. The results points on the formation of composite nanoparticles with core of Au<sub>3</sub>Mg alloy and shell of Au in the considered sample.</p>","PeriodicalId":723,"journal":{"name":"Optics and Spectroscopy","volume":"132 2","pages":"130 - 138"},"PeriodicalIF":0.8,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141931815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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