检索结果-南通市图书馆

Congenital Heart Disease 2023年第1期18卷 57-65页

作者： Vitaliy Suvorov Vladimir Zaitsev nikolay Pilyugov Olga Tereshenko Michail Komissarov Saint Petersburg State Pediatric Medical University Saint-PetersburgRussia

Critical aortic valve stenosis in newborns is the cause of a severe clinical condition with the onset of symptoms during first hours after *** present a clinical case of a successful surgical correction of a critical aortic stenosis using a hybrid method applied in a newborn during the first day of *** infant was diagnosed with a hypoplastic left heart complex with an intact atrial septum(aortic and mitral valves stenosis variant),that led to the cardiogenic shock and acute pulmonary *** procedure included bilateral banding of the pulmonary artery branches and atrioseptostomy with stenting of the interatrial *** surgery was performed through a median sternotomy.

关键词： Critical aortic valve stenosis hybrid correction hybrid Norwood bilateral banding hybrid Norwood procedure acute pulmonary edema intact atrial septum hypoplastic left heart complex

Influence of frost weathering on the recession of surfaces of technogenic landforms in Yakutia

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Research in Cold and Arid Regions 2019年第4期11卷 257-266页

作者： Andrey E.Melnikov nikolay N.Grib Melnikov Permafrost Institute of the Siberian Branch of the Russian Academy of Sciences Yakutsk 677010Russia Technical Institute(branch)of M.K.Ammosov North-eastern Federal University Neryungri 678960Russia

The article assesses the influence of permafrost weathering on the rate of destruction of technogenic land forms,as exhibit ed on as illustrated by the railway embankment of the Amur Yakut mainline in the Sakha Republic(Yakutia).Studies were carried out on a railway section more than 375 km *** subsidence rate of the embankment slopes and structur al excavations was determined using laboratory methods that simulate various mechanisms of temperature(with a transi tion through 0℃)impact on *** the first time,a quantitative assessment of the influence of cryogenic weathering on the stability of the railway in the region belonging to the northern building climatic zone is *** the territory un der consideration,embankment rocks were experimentally determined to undergo more than 100 freezing and thawing cy cles during a *** the existing climatic conditions,cryogenic weathering actively affects the embankment of the railway to a depth of 30 *** of the embankment deformations detected during field observations are due to defects in the integrity of this particular *** size of the disintegrating layer of particular types of rock comprising the rail way embankment has been established as reaching 10 cm per *** 5 years following the formation of embankments comprising the upper structure of the railroad tracks,the physical and mechanical properties of rocks,which initially had a tensile strength for uniaxial compression in the range of 40 70 MPa,were reduced by more than 50%.According to the authors,the establishment of regional cryohypergenesis features is universal in nature and can be applied to solving a wide range of tasks related to the assessment and prediction of the degree of cryogenic transformation of rocks having different structural properties.

关键词： cryogenic weathering embankment railway subsidence rate Republic of Sakha Yakutia

Applications of two electric arc plasma torches for the beneficiation of natural quartz

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2019年第3期26卷 267-273页

作者： Yuri-Mikhailovich Grishin Long Miao Lev-Alekseevich Borisov nikolay-Mikhailovich Serykh Alexey-Yurievich Kulagin Department of Thermal physics Bauman Moscow State Technical University Federal State Unitary Enterprise Tsentrkvarts

Experimental beneficiation processes of quartz concentrate in arc plasma torches of two different types and electric powers were studied. An emission scanning electron microscope and a universal laser analyzer were used to investigate the structures as well as the size distributions of grains and microparticles. Inductively coupled plasma–mass spectrometry was used to determine the chemical compositions of nonstructural solid-phase mineral impurities in quartz concentrate. Results related to the modified grains' structure and size distribution, the compositions of impurities, and the gas–liquid inclusions in the quartz concentrate were investigated. The total impurities concentrations in the processed grains were found to satisfy the IOTA-STD standard(industry standard for grading high quality fused quartz products). The optimal condition(i.e., the optimal specific plasma enthalpy) for the production of high-purity quartz in arc plasma torches was found to depend on the geological-genetic type and the structural and textural features(i.e., chemical composition and gas–liquid inclusions) of the quartz concentrate.

关键词： low-temperature plasma beneficiation high purity quartz arc plasma torch IOTA-STD standard

Methods for the use of the best Russian innovations in forest fire detection and suppression

在线全文

学校读者我要写书评

暂无评论

Journal of Forestry Research 2021年第6期32卷 2255-2263页

作者： Alexander A.Martynyuk Vera A.Savchenkova nikolay A.Korshunov Roman V.Kotelnikov All-Russian Research Institute of Silviculture and Mechanization of Forestry(ARRISMF) Institutskaya str.15PushkinoMoscow regionRussia141202

This paper addresses the final stage of the study concerning the practical use of the best Russian methods,technologies and means for detecting and extinguishing forest fires in *** general,the work is aimed at increasing the effectiveness of the forest fire protection system by improving the methodological and technical support for the use of the best new *** the course of the study,analytical methods have been applied,tested and used in silviculture,while developing and improving the regulatory legal and methodological *** on the selection of research directions in the preliminary stages of work,analysis of the current state,use,and the development forecast of the most effective and promising technologies was carried *** addition,for detecting,controlling and extinguishing forest fires,including a comparative analysis of their economic efficiency,methods for practical use of the best Russian innovations was developed.A significant number of new developments have accumulated which,for a number of reasons,have not been *** into account the current state and dynamics of these promising methods,technologies,means of detecting and extinguishing forest fires,this study substantiates the development forecast of these promising innovations and their *** structure includes general provisions,concepts and terminology,regulatory support,the procedure for assessing the feasibility and effectiveness of the innovations,as well as a list of recommended documents for studying the use of technology for detecting,controlling and extinguishing forest *** methods will help meet modern requirements for the protection of forests from wildfires,and present an algorithm for their implementation in practice.

关键词： Forest protection Fire suppression Wildfire Efficacy

A new species of Micryletta(Amphibia:Anura:Microhylidae)from the Langbian Plateau in southern Vietnam

在线全文

学校读者我要写书评

暂无评论

Zoological Research 2021年第6期42卷 726-733页

作者： nikolay A.Poyarkov Tan Van Nguyen Jian-Huan Yang Vladislav AGorin Faculty of Biology Department of Vertebrate ZoologyMoscow State UniversityMoscow119234Russia Laboratory of Tropical Ecology Joint Russian-Vietnamese Tropical Research and Technological CenterHanoiVietnam Department of Species Conservation Save Vietnam’s WildlifeNinh BinhVietnam Kadoorie Conservation China Kadoorie Farm and Botanic GardenTai PoHong Kong SARChina

We report a new species of the genus Micryletta from the montane evergreen forest in the Bidoup-Nui Ba National Park,Lam Dong Province,Langbian Plateau,southern Vietnam,based on molecular and morphological *** new species is diagnosed by a combination of the following morphological characters:body size small(snout-vent length(SVL)22.4 mm,single female);iris uniform black;snout nearly truncate in dorsal view,slightly rounded in profile;tibiotarsal articulation of adpressed limb reaching level of eye;dorsal surface smooth;supratympanic fold present,prominent;outer metatarsal tubercle absent;tips of toes very weakly dilated into small discs;finger webbing absent,toe webbing rudimentary;dorsal surfaces of head and body orange-red with small irregularly shaped dark-brown patches;dorsal surface of limbs pale dark brown with small reddish speckles;body flanks dark brown anteriorly fading to grayish brown posteriorly with brown spots in groin area;lateral sides of head immaculate blackish brown without white patches;coloration of ventral surfaces immaculate dark gray.

关键词： Plateau orange brown

Geophagy(rock eating),experimental stress and cognitive idiosyncrasy

在线全文

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Biomedicine 2014年第5期4卷 362-366页

作者： Kirill Golokhvast Alexander Sergievich nikolay Grigoriev Far Eastern Federal University Amur Region Education Development Institute Amur State Medical Academy

Objective:To discusse the impact of geophagy on liehavior and conditioned-reflex activity of Wistar rats subjected to instrumental stress under experimental ***:Experimental geophagy was simulated by adding zeolite-containing tuff(clinoptilolite)to animal feed,the amount relating to 2%of body *** was obtained from areas where animals usually eat subsurface *** activity of animals and peculiarities of information and emotional stress were studied through the use of a universal problem ***:The results of this experimental study showed the negative impact of instrumental stress on laboratory animals,manifested in behavioral dysfunction,in the form of changes in qualitative and quantitative characteristics of search *** geophagy contributed to significant improvement in behavioral parameters,confirming the anti-stress effects of the use of natural ***:These results suggest that,in natural environmental conditions, "edible" rocks serve as an adaptive tool for recovery from various types of environmental stresses,and are examples of self-medication.

关键词： Geophagy Cognition Search activity Zeolite Stress

A new species of Crocodile Newt, genus Tylototriton(Amphibia, Caudata, Salamandridae) from the mountains of Kachin State, northern Myanmar

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Zoological Research 2019年第3期40卷 151-174页

作者： Than Zaw Paw Lay Parinya Pawangkhanant Vladislav A.Gorin nikolay A.Poyarkov,Jr Zoology Department Mohnyin Degree CollegeMohnyinKachin StateMyanmar Flora and Fauna International Lon Ton VillageIndawgyiKachin StateMyanmar Bansomdejchaopraya Rajabhat University Hiran RuchiThon BuriBangkok 10600Thailand Department of Vertebrate Zoology Biological FacultyLomonosov Moscow State UniversityMoscow 119234Russia Joint Russian-Vietnamese Tropical Research and Technological Center Nghia DoCau GiayHanoiVietnam

We describe a new species of the genus Tylototriton from Ingyin Taung Mt.,Mohnyin Township,Kachin State,Myanmar,based on morphological and molecular *** new species is assigned to the subgenus Tylototriton *** is clearly distinct from all known congeners by the following characters:medium body size;thin,long tail,lacking lateral grooves;rough skin;truncate snout;wide,protruding supratemporal bony ridges on head,beginning at anterior corner of orbit;weak,almost indistinct sagittal ridge;long,thin limbs,broadly overlapping when adpressed along body;distinct,wide,non-segmented vertebral ridge;13 or 14 rib nodules;brown to darkbrown background coloration with dull orange-brown to yellowish-brown markings on labial regions,parotoids,rib nodules,whole limbs,vent,and ventral tail *** also briefly discuss biogeography and species diversity of the genus Tylototriton in Myanmar.

关键词： Tylototriton kachinorum sp.nov. mtDNA genealogy ND2 16S rRNA Shan Biogeography Endemism Taxonomy

Centrifuge model test on performance of thermosyphon cooled sandbags stabilizing warm oil pipeline buried in permafrost

在线全文

学校读者我要写书评

暂无评论

Research in Cold and Arid Regions 2021年第3期13卷 234-255页

作者： GuoYu Li HongYuan Jing nikolay Volkov Wei Ma PengChao Chen State Key Laboratory of Frozen Soil Engineering(SKLFSE) Northwest Institute of Eco-Environment and Resources(NIEER)Chinese Academy of Sciences(CAS)LanzhouGansu 730000China Da Xing'anling Observation and Research Station of Frozen-ground Engineering and Environment NIEERCASJiagedaqiHeilongjiang 165000China PipeChina North Pipeline Company LangfangHebei 065000China GEOINGSERVICE LLP(Fugro Group) 29 Vernadskogo AvenueMoscowRussia

The thaw settlement of pipeline foundation soils in response to the operation of the first China-Russia Crude Oil Pipeline along the eastern flank of the northern Da Xing'anling Mountains in Northeast China was simulated in a physical model test(with a similitude ratio of 1/73) in a geotechnical centrifuge. Two pipes of a supported and an unsupported section were evaluated over a testing period for simulating 20 years of actual pipeline operation with seasonal cyclically changing oil and ambient temperatures. The results show that pipe settlement of the supported pipe was 45% of settlement of the unsupported pipe. Settlement for the unsupported section was approximately 35% of the thaw bulb depth below the initial pipe elevation, only 30% of that for the supported pipe due to the influence of the supports. The final thaw bulbs extended approximately 3.6 and 1.6 times of the pipe diameter below the unsupported and supported pipe bottom elevations, respectively. The sandbag supports kept frozen during the test period because of cooling effect of the thermosyphons. The maximum bending stress induced over the 20 m span length from bearing of the full cover over the pipe would be equivalent to40% specified minimum yield strength(SMYS). Potential buckling of the pipe should be considered as the ground *** study also offers important data for calibration and validation of numerical simulation models.

关键词： centrifuge test oil pipeline frost heave thermosyphon thaw settlement permafrost engineering

Multiphase flow dynamics=多项流动力学. Vol. 2, Mechanical and thermal interactions =力学与热相互作用 nikolay ***.

在线全文

学校读者我要写书评

暂无评论

LIGHT-INDUCED FLUORESCENCE SPECTROSCOPY AND OPTICAL COHERENCE TOMOGRAPHY OF BASAL CELL CARCINOMA

2002年

作者： nikolay I.Kolev.

来源：畅想之星图书光盘版（南... 评论

在线全文

畅想之星图书光盘版（南通市图书馆镜像）

学校读者我要写书评

暂无评论

Journal of Innovative Optical Health Sciences 2009年第3期2卷 261-268页

作者： EKATERINA BORISOVA ELFRIDA CARSTEA LUMINITA CRISTESCU ELMIRA PAVLOVA nikolay HADJIOLOV PETRANKA TROYANOVA LATCHEZAR AVRAMOV Institute of Electronics Bulgarian Academy of Sciences 72Tsarigradsko Chaussee Blvd.1784 SofiaBulgaria National Institute for Optoelectronics Atomistilor 409077125 MagureleRomania National Oncological Center 6Plovdivsko Pole Str.1156 SofiaBulgaria

Many up-to-date optical techniques have been developed and applied recently in clinical practice for obtaining qualitatively and quantitatively new data from the investigated *** to their high sensitivity in detection of small changes,these techniques are widely used for detection of early changes in biological ***-induced fluorescence spectroscopy(LIFS)is one of the most promising techniques for early detection of cutaneous *** number of recent publications have suggested that optical coherence tomography(OCT)also has potential for non-invasive diagnosis of skin *** recent work is a part of clinical trial procedure for introduction of LIFS technique into the common medical practice in National Oncological Medical Center in Bulgaria for diagnosis of non-melanoma skin *** focus our attention here on basal cell carcinoma lesions and their specific features revealed by LIFS and OCT *** this paper we prove the efficiency of using the combined LIFS-OCT method in skin lesions studies by integrating the complimentary qualities of each particular *** LIFS measurements several excitation sources,each emitting at 365,385 and 405 nm maxima are *** associated microspectrometer detects in vivo the fluorescence signals from human *** main spectral features of the lesions and normal skin are discussed and their possible origins are *** images are used to evaluate the lesion thickness,structure and severity stage,when *** obtained results could be used to develop a more complete picture of optical properties of these widely spread skin *** the same time,our studies show that the combined LIFS-OCT method could be introduced in clinical algorithms for early tumor detection and differentiation between normal/benign/malignant skin lesions.

关键词： Cutaneous fluorescence OCT BCC images endogenous porphyrins skin cancer