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Ion-conducting Membranes Based on Bacterial Cellulose Nanofibers Modified by Poly(sodium acrylate-co-2-acrylamido-2-methylpropanesulfonic acid)

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Chinese Journal of Polymer Science 2024年第3期42卷 333-343,I0007页

作者： Elizaveta V.Batishcheva nikolay N.Smirnov Natalya V.Bobrova Maria P.Sokolova Michael A.Smirnov Institute of Macromolecular Compounds Russian Academy of SciencesBolshoy pr.31Saint Petersburg 199004Russia

Green method for preparation of ion-conducting membranes(ICM) based on bacterial cellulose nanofibers(CNF) modified by a copolymer of sodium acrylate and 2-acrylamido-2-methylpropanesulfonic acid was elaborated. FTIR and NMR data confirmed grafting of polyacrylate onto cellulose surface. Formation of porous structure of the ICM was controlled by SEM and AFM. The maximal ionic conductivity of the membranes reaches 1.5 and 3.1 mS·cm^(-1)(60 ℃ and 98% relative humidity) when they are saturated with water or H_2SO_4(1 mol·l^(-1)) electrolyte,respectively. Prepared ICM was tested as a separator in a symmetrical supercapacitor with electrodes based on polyaniline hydrogel. The assembled cell demonstrate ability to operate at high current density up to 100 A·g^(-1) maintaining specific capacitance 165 F·g^(-1). Maximal specific capacitance of 289 F·g^(-1) was achieved at current density 1 A·g^(-1). Retaining of 90% of initial capacitance after 10000 of charge-discharge cycles proves high electrochemical stability of prepared ICM.

关键词： Bacterial cellulose Ion conductivity Porous membrane Supercapacitor

Polarization-Insensitive Hybrid Plasmonic Waveguide Design for Evanescent Field Absorption Gas Sensor

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Photonic Sensors 2021年第3期11卷 279-290页

作者： nikolay lvovich kazanskiy Svetlana Nikolaevna Khonina Muhammad Ali Butt Department of Technical Cybernetics Samara National Research UniversityMoskovskoye Shosse 34Samara443086Russia Institute of RAS-Branch of the FSRC“Crystallography and Photonics”RAS Molodogvardeiskaya 151Samara443001Russia Institute of Microelectronics and Optoelectronics Warsaw University of TechnologyKoszykowa 75Warszawa00-662Poland

We propose a polarization-insensitive design of a hybrid plasmonic waveguide(HPWG)optimized at the 3.392µm wavelength which corresponds to the absorption line of methane *** waveguide design is capable of providing high mode sensitivity(Smode)and evanescent field ratio(EFR)for both transverse electric(TE)and transverse magnetic(TM)hybrid *** modal analysis of the waveguide is performed via 2-dimension(2D)and 3-dimension(3D)finite element methods(FEMs).At optimized waveguide parameters,Smode and EFR of 0.94 and 0.704,can be obtained for the TE hybrid mode,respectively,whereas the TM hybrid mode can offer Smode and EFR of 0.86 and 0.67,*** TE and TM hybrid modes power dissipation of~3 dB can be obtained for a 20-µm-long hybrid plasmonic waveguide at the 60%gas *** believe that the highly sensitive waveguide scheme proposed in this work overcomes the limitation of the polarization controlled light and can be utilized in gas sensing applications.

关键词： Hybrid plasmonic waveguide finite element method methane gas evanescent field absorption gas sensor polarization-insensitive

Highly Sensitive Refractive Index Sensor Based on Plasmonic Bow Tie Configuration

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Photonic Sensors 2020年第3期10卷 223-232页

作者： Muhammad Ali BUTT nikolay lvovich kazanskiy Svetlana Nikolaevna KHONINA Department of Technical Cybernetic Samara National Research UniversitySamara 443086Russia Institute of RAS-Branch of the FSRC“Crystallography and Photonics” RAS151 MolodogvardeiskayaSamara 443001Russia

We propose a highly refractive index sensor based on plasmonic Bow Tie *** sensitivity of the resonator design is enhanced by incorporating a nanowall(NW)in a modified Bow Tie design where sharp tips of V-junction are *** approach provides high confinement of electric field distribution of surface plasmon polariton(SPP)mode in the narrow region of the ***,the effective refractive index(neff)of the mode increases and is highly responsive to the ambient *** sensitivity analysis of the SPP mode is calculated for six resonator *** results suggest that the NW embedded cavity offers the highest mode sensitivity due to the large shift of effective index when exposed to a slight change in the medium refractive ***,the device sensitivity of the proposed design is approximated at 2300 nm/RIU which is much higher than the sensitivity of the standard Bow Tie configuration.

关键词： Bow Tie configuration plasmonic sensor metal-insulator-metal waveguide refractive index sensor

Optical multiplexing techniques and their marriage for on-chip and optical fiber communication:a review

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Opto-Electronic Advances 2022年第8期5卷 50-74页

作者： Svetlana Nikolaevna Khonina nikolay lvovich kazanskiy Muhammad Ali Butt Sergei Vladimirovich Karpeev IPSI RAS-Branch of the FSRC"Crystallography and Photonics"RAS Samara 443001Russia Samara National Research University Samara 443086Russia Warsaw University of Technology Institute of Microelectronics and OptoelectronicsKoszykowa 75Warszawa 00-662Poland

Herein,an attention-grabbing and up-to-date review related to major multiplexing techniques is presented which in-cludes wavelength division multiplexing(WDM),polarization division multiplexing(PDM),space division multiplexing(SDM),mode division multiplexing(MDM)and orbital angular momentum multiplexing(OAMM).Multiplexing is a mech-anism by which multiple signals are combined into a shared channel used to showcase the maximum capacity of the op-tical ***,it is critical to develop hybrid multiplexing methods to allow enhanced channel *** this re-view,we have also included hybrid multiplexing techniques such as WDM-PDM,WDM-MDM and *** is prob-able to attain N×M channels by utilizing N wavelengths and M guided-modes by simply utilizing hybrid WDM-MDM(de)*** the best of our knowledge,this review paper is one of its kind which has highlighted the most prom-inent and recent signs of progress in multiplexing techniques in one place.

关键词： wavelength division multiplexing mode division multiplexing polarization division multiplexing space-division multiplexing and hybrid multiplexing

A New Species of Japalura(Agamidae: lacertilia: Reptilia) from Central Highland,Vietnam

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Asian Herpetological Research 2017年第1期18卷 14-21页

作者： Natalia B.ANANJEVA nikolay l.ORlOV Tao Thien NGUYEN Department of Herpetology Zoological InstituteRussian Academy of Sciences Vietnam National Museum of Nature Vietnam Academy of Science and Technology

A new species of the agamid genus Japalura is described based on three specimens from southern part of Central Vietnam. It is distinguished from remaining congeners by the following combination of characters： adult size （SVl females 68-69 mm）, tail length/SVl ratio 226%-239%, HW/SVl ratio 17%-18%; Fll/SVl ratio 41%43%; Hll/SVl ratio 72%-73%; 7-9 supralabials, 7-9 infralabials, 54-56 middorsal scales, 20-22 lamellae under finger IV, 24-26 lamellae under toe IV, 1 scale between nasal and supralabials; tympanum concealed; absence of transverse gular fold. The geographical distribution of Japalura genus in general and of a new species in particular is discussed.

关键词： Agamidae Japalura taxonomy Vietnam description of a new species distribution

A new species of the genus Theloderma Tschudi, 1838 (Amphibia： Anura： Rhacophoridae) from Tay Nguyen Plateau, central Vietnam

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Zoological Research 2018年第3期39卷 158-184页

作者： nikolay A. Poyarkov Ivan I. Kropachev Svetlana S. Gogoleva Nikolai l. Orlov Department of Vertebrate Zoology Biological Faculty Lomonosov Moscow State University Moscow 119234 Russia Joint Russian-Vietnamese Tropical Research and Technological Center Nghia Do Cau Giay Hanoi Vietnam Tula Exotarium Tula 300004 Russia A.N. Severtsov Institute of Ecology and Evolution Russian Academy of Sciences Moscow 119071 Russia Joint Russian-Vietnamese Tropical Research and Technological Center South Branch Ho Chi Minh City Vietnam Zoological Museum of the lomonosov Moscow State University Moscow 125009 Russia Zoological Institute Russian Academy of Sciences St. Petersburg 199034 Russia

A new species of small tree frog from a primary montane tropical forest of central Vietnam, Tay Nguyen Plateau, is described based on morphological, molecular, and acoustic evidence. The Golden Bug-Eyed Frog, Theloderma auratum sp. nov., is distinguishable from its congeners and other small rhacophorid species based on a combination of the following morphological attributes：（1） bony ridges on head absent; （2） smooth skin completely lacking calcified warts or asperities; （3） pointed elongated tapering snout; （4） vocal opening in males absent; （5） vomerine teeth absent; （6） males of small body size （SVl 21.8-26.4 mm）; （7） head longer than wide; ED/SVl ratio 13%-15%; ESl/SVl ratio 16%-20%; （8） small tympanum （TD/El ratio 50%-60%） with few tiny tubercles; （9） supratympanic fold absent; （10） ventral surfaces completely smooth; （11 ） webbing between fingers absent; （12） outer and inner metacarpal tubercles present, supernumerary metacarpal tubercle single, medial, oval in shape; （13） toes half-webbed： I 2-21/4 II 11/^-23/~ III 2-31/4 IV 3-11/2 V; （14） inner metatarsal tubercle present, oval; outer metatarsal tubercle absent; （15） iris bicolored; （16） dorsal surfaces golden-yellow with sparse golden-orange speckling or reticulations and few small dark-brown spots; （17） lateral sides of head and body with wide dark reddish-brown to black lateral stripes, clearlyseparated from lighter dorsal coloration by straight contrasting edge; （18） ventral surfaces of body, throat, and chest greyish-blue with indistinct brown confluent blotches; （19） upper eyelids with few （3-5） very small flat reddish superciliary tubercles; （20） limbs dorsally reddish-brown, ventrally brown with small bluish-white speckles. The new species is also distinct from all congeners in 12S rRNA to 16S rRNA mitochondrial DNA fragment sequences （uncorrected genetic distance P〉8.9%）. Advertisement call and tadpole morphology of the new species are described. Our molecular data showed Theloderma auratum sp. nov.

关键词： Theloderma auratum sp. nov. mtDNAphylogeny 12S rRNA 16S rRNA Kon Tum Gia lai Endemism Taxonomy

Hiding on jagged karst pinnacles:A new microendemic genus and species of a limestone-dwelling agamid lizard(Squamata:Agamidae:Draconinae)from Khammouan Province,laos

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Zoological Research 2023年第6期44卷 1039-1051页

作者： Saly Sitthivong Peter Brakels Santi Xayyasith Nathanaël Maury Sabira Idiiatullina Parinya Pawangkhanant Kai Wang Tan Van Nguyen nikolay A.Poyarkov Faculty of Forestry National University of LaosVientiane 01170Lao PDR IUCN laos PDR Vientiane 01160Lao PDR Faculty of Environmental Sciences National University of LaosVientiane 01170Lao PDR Chelonian Conservation Center laos World Encyclopedia of HerpetofaunaVientiane 01000Lao PDR Department of Vertebrate Zoology Biological FacultyLomonosov Moscow State UniversityMoscow 119234Russia Rabbit in the Moon Foundation(RIM) SuanphuengRatchaburi 70180Thailand State Key laboratory of Genetic Resources and Evolution Kunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650223China Southeast Asia Biodiversity Research Institute Chinese Academy of SciencesYezinNay Pyi Taw 05282Myanmar Institute for Research and Training in Medicine Biology and PharmacyDuy Tan UniversityDa Nang 550000Vietnam College of Medicine&Pharmacy Duy Tan UniversityDa Nang 550000Vietnam Joint Russian-Vietnamese Tropical Research and Technological Center Nghia DoCau GiayHanoi 122000Vietnam

We describe a unique new species and genus of agamid lizard from the karstic massifs of Khammouan Province,central *** carsticola *** *** an elusive medium-sized lizard(maximum snout-vent length101 mm)specifically adapted to life on limestone rocks and *** assess the phylogenetic position of the new genus amongst other agamids,we generated DNA sequences from two mitochondrial gene fragments(16S rRNA and ND2)and three nuclear loci(BDNF,RAG1 and c-mos),with a final alignment comprising 7418 base pairs for 64 agamid *** analyses unambiguously place the new genus in the mainland Asia subfamily Draconinae,where it forms a clade sister to the genus Diploderma from East Asia and the northern part of Southeast ***,the new genus is distinguished from all other genera in Draconinae by possessing a notably swollen tail base with enlarged scales on its dorsal and ventral *** work provides further evidence that limestone regions of Indochina represent unique“arks of biodiversity”and harbor numerous relict *** date,laodracon carsticola *** *** known from only two adult male specimens and its distribution seems to be restricted to a narrow limestone massif on the border of Khammouan and Bolikhamxai provinces of *** studies are required to understand its life history,distribution,and conservation status.

关键词： Biodiversity Endemism Indochina Karstic landscape laodracon carsticola Phylogeny Southeast Asia Taxonomy

Cognitive disorder in brain concussion

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Frontiers in Biology 2014年第4期9卷 332-337页

作者： Vladimir ZAKHAROV Ekaterina DROZDOVA nikolay YAKHNO Neurological Department of First Moscow Medical University lM.Setchenov Moscow 119991 Russia Traumatologic and Neurosurgery Department City Clinical Hospital No. 13 Nizhny Novgorod Russia

This paper presented original study results concerning the prevalence and clinical characteristics of cognitive impairment associated with brain concussion. The cognitive functions of 80 consecutive patients （mean age = 37.40±1l.74years; 50 men and 30 women） admitted to the hospital with brain concussions were evaluated. Their cognitive scores were compared with 40 age- and education-matched healthy volunteers without history of cranial trauma. Cognitive impairment without dementia was found in 93% of the patients. Cognitive impairment in brain concussion was also characterized by prominent cognitive slowness （bradyphrenia）, concentration decrease, free recall insufficiency, and visual-spatial dysfunction. Age and severity of anxiety significantly influence the cognitive performance of patients.

关键词： brain concussion cognitive impairment

A new karst-dwelling bent-toed gecko (Squamata： Gekkonidae Cyrtodactylus) from Xiangkhoang Province, northeastern laos

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Zoological Research 2018年第3期39卷 202-219页

作者： Roman A. Nazarov Olivier S.G. Pauwels Evgeniy l. Konstantinov Anatoliy S. Chulisov Nikolai l. Orlov nikolay A. Poyarkov, Jr. Zoological Museum Moscow State University Moscow 125009 Russia Royal Belgian Institute of Natural Sciences Brussels B-1000 Belgium Institute of Natural Sciences Kaluga State University named after K.I. Tsiolkovskii Kaluga 248023 Russia Zoological Institute Russian Academy of Sciences St. Petersburg 199034 Russia Department of Vertebrate Zoology Biological Faculty Lomonosov Moscow State University Moscow 119234 Russia Joint Russian-Vietnamese Tropical Research and Technological Center 63 Nguyen Van Huyen Road Nghia Do Cau Giay Hanoi Vietnam

We describe a new karst-dwelling Cyrtodactylus from Ban Thathom, Xiangkhoang Province, northeastern laos. The new species can be distinguished from other congeners by having four dark dorsal bands between limb insertions, a discontinuous nucha~ loop, 10 precloacal pores in males or 10-12 precloacal pits （females） separated by a diastema from a series of enlarged femoral scales bearing 18 or 19 pores （male） or 8-10 pits （females） along each femur, 14-18 dorsal tubercle rows at midbody, no precloacal groove, 30-36 midbody scale rows across belly between ventrolateral skin folds, transversely enlarged subcaudal plates, and a maximal known snout-vent length of 75.5 mm. Our description brings to 22 the number of Cyrtodactylus species recorded from laos.

关键词： Indochinese region Karst limestone Herpetology Taxonomy New species