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Processing stages of Gd_2Sr(Al_(1-x)Fe_x)_2O_7 series

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Rare Metals 2014年第1期33卷 47-53页

作者： Ekaterina Tugova victor Gusarov laboratory of New Inorganic Materials Ioffe Physical Technical Institute of RAS Department of Physical Chemistry St. Petersburg State Institute of Technology Technical University

The continuous series of perovskite-related oxides with the general formula GdzSr（Al1-xFex）207 0 〈 x 〈 1 were prepared by conventional ceramic technology in air. The pro- cessing stages of Gd2Sr（Al1-xFex）207 0 〈 x 〈 1 phases were investigated by means of X-ray powder diffraction （XRD） and scanning electron microscopy （SEM） with the element phase analysis. The three main stages of GdeSr（All_~Fex）aO7 for- marion are pointed out. The analysis of the mutual influence of intermediate compounds on the synthesis of the target solid solutions of complex composition, in particular for Gd2Sr（All-xFex）207 was carried out. It is determined that the closeness of the reactive mixture composition to the composition of individual compounds Gd2SrA1207 or GdaSrFeaO7 is of importance for the realization of a partic- ular way of GdESr（Al1-xFex）207 solid solutions formation. It is shown that at x ,= 0.2 the reversing in scheme of Gd2Sr（Al1-Fex）207 series formation is observed. The formation of the Gd2Sr（Al1-xFex）207 continuous series is indicated by the monotonic dependence of molar unit cell volume on the iron content x.

关键词： Rare-earth metals Oxide materials Solid-state reactions Ceramics X-ray diffraction (XRD) Scanning electron microscopy (SEM)

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looking for a House(Ⅱ)

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英语学习 2001年第10期 30-31页

作者： victor z 梁思

The hassles of owning a housestarts way before you find theright ***,it is thetime I have to put in to look at houses.I could have time only on ***,my life is affectedtremendously as I now have to spendtime on looking... 详细信息

关键词： looking for a House

looking for a House(Ⅰ)

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英语学习 2001年第9期 34-35页

作者： victor z. 柳霞

We have been house-hunting for a couple ofmonths. It is a bit like1988 when we bought our first house,when the market seemed to know oneway—up and up. Then, the marketseemed to be a bit beyond the *** before had the house prices beenso high, so much so that a lot of thehouse-owners found they could selltheir houses twice, thrice or even four

关键词： looking for a House

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Tho Intornot

英语学习 2001年第8期 38-39页

作者： victor z. 海涛

In mid-April,Yahoo—the world’smost popular Website picked amovie executive as its next CEOto lead the company into the future.~1Unlike the outgoing CEO,the newCEO knows nothing about technologybut a lot about making... 详细信息

关键词： AOl 美国在线 Tho Intornot

Characters of evoked burst and it’s current mechanism in CCD model

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Characters of evoked burst and it’s current mechanism in CC...

Synaptic plasticity in purkinje cells of the posterior caudal lobe caudal lobe of the Mormyrid fish cerebellum

中国神经科学学会第四次会员代表大会暨第八届全国学术会议

作者： victor z HAN Oregon Health Sciences University BeavertonOR 97006USA

＜正＞Objective lots of neuropathic pain models were made during decades of investigations,in which spontaneous discharge originated from dorsal root ganglion（DRG） were regarded as a key point for development of various abnormal pain *** idea of that if any firing patterns could be identified to be related to certain abnormal pain behavior has not been concerned up to *** present study is to explore what’s kind of characters of evoked burst（EB）,a newly observed firing pattern *** whether it is related to the mechanical allodynia exhibited on a chronic compression of DRG（CCD） model,which mimicking the clinical intervertebral foramen stenosis or proceeding of intervertebral disc. Methods On a CCD model,the von-Frey stimulation were used to observe the mechanical allodynia,in vivo sharpelectrode or in vitro patch-clamp recording were carried on to record the activity from DRG *** interruptions were applied to see the effect on EB as well as the underlying current ***（1） After CCD model,the DRG soma became hyperexcitable with various firing pattern.（2） On the animal with obvious mechanical allodynia,a kind of evoked burst（EB）,which means a periphery input spike followed by the somatic burst firing,was identified on Aβtype of neurons with a significantly increased percentage of 34%（15/44） comparing to those in normal（10%,1/9）,either at the resting membrane level or on a depolarized potential.（3） The EB has the following character:it’s exist relys on the complement of the periphery input,on the other words,it was evoked by periphery stimulation,either from electrical stimulation of the sciatic nerve or the stimulation of their natural receptive *** the shape of the first spike in the burst,the EB could be identified from those of spontaneous burst（SB）,namely,EB has a rapid-onset kinetics（with a rising speed of 50.75±6.46V/s,n=9） while SB has a prepotential phase at the foot of first spike（with a rising speed of 2.34±0.92V/

关键词： neuropathic pain dorsal root ganglion mechanical allodynia pain signal periphery analgesia

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Synaptic plasticity in purkinje cells of the posterior cauda...

Optimization Problem for the Integral Model of Developing Systems

2008北京国际生理科学学术大会

作者： HAN victor z ONPRC/NSI Oregon Health ＆ Science UniversityBeavertonOR 97006USA

＜正＞The posterior caudal lobe（Clp）is an important part of the cerebellum in the weakly electric mormyrid fish and shares many basic features with the mammalian cerebellum with respect to functional circuitry.A unique anatomical feature of the Clp is that the axons of Purkinje cells do not leave the cerebellar cortex,but end locally on projection neurons（functionally equivalent to the deep cerebellar nuclei cells）and other Purkinje *** features suggest it is suitable to study the functional connectivity between Purkinje cells and projection neurons in slice *** studies are not possible in a mammalian cerebellar preparation because the two cell types are located too far ***,the Clp is associated with electrosense,which is a physiological signal that can be precisely ***,the ClP can serve as a suitable model for investigating sensory aspects of the cerebellar *** recently established the functional circuitry of this structure,and the present study explores the forms of synaptic plasticity at parallel fiber-Purkinje cell synapses in the *** cells were recorded using whole-cell patch-recording method in slice *** electrodes were positioned close to and distal to the patched cell bodies to activate climbing fibers and parallel fibers,*** fiber responses were recorded at 0.1 Hz,and pairing or manipulations were delivered at 1 Hz for 5 *** of the parallel fiber responses were measured and compared before and after the pairing or *** was found that activation of parallel fibers evoked graded EPSPs or EPSCs,whereas activation of climbing fibers evoked large all-or-none EPSPs or *** activating parallel fibers at 1 Hz for a period of 5 min did not have significant effects on the parallel fiber responses,pairing parallel fiber inputs with climbing fiber inputs significantly depressed the parallel fiber responses by 18%-29%（n=5）.This depressio

关键词： Purkinje cell parallel fiber climbing fiber Mormyrid fish cerebellum

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Journal of the Operations Research Society of China 2022年第4期10卷 817-833页

作者： Evgeniia Markova Inna Sidler victor Trufanov Melentiev Energy Systems Institute of Siberian Branch of the Russian Academy of Sciences Irkutsk664033Russia

This paper addresses an integral model of development a large electric power system using the example of the Unified Energy System of *** model takes account of the age structure of the plants main ***,generating equipment is divided into components depending on the types of energy resources *** mathematical model is presented by a system of nonclassical Volterra integral equations of the first *** of the equations describes the balance between the total available capacity of the electric power system,commissioning of new equipment,and dismantling of obsolete *** other equations define the shares of different types of power plants in the total composition of the electric power system *** on the considered model,we set a problem that searches the optimal lifetimes of electric power system capacities for a given demand for *** optimality criterion is a functional reflecting cost of commissioning and operating the *** specifics of the optimization problem are that the optimization parameter is in the lower limit of *** algorithm for solving of this optimal control problem numerically is *** influence of economic indices on the solution to the optimal control problem is *** of the optimal development of the Unified Energy System of Russia until 2050 are carried out using real-life data.

关键词： Optimization problem Integral model lifetime

Benchmarking graph neural networks for materials chemistry

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npj Computational Materials 2021年第1期7卷 739-746页

作者： victor Fung Jiaxin zhang Eric Juarez Bobby G.Sumpter Center for Nanophase Materials Sciences Oak Ridge National LaboratoryOak RidgeTNUnited States Computer Science and Mathematics Division Oak Ridge National LaboratoryOak RidgeTNUnited States

Graph neural networks(GNNs)have received intense interest as a rapidly expanding class of machine learning models remarkably well-suited for materials *** date,a number of successful GNNs have been proposed and demonstrated for systems ranging from crystal stability to electronic property prediction and to surface chemistry and heterogeneous ***,a consistent benchmark of these models remains lacking,hindering the development and consistent evaluation of new models in the materials ***,we present a workflow and testing platform,MatDeeplearn,for quickly and reproducibly assessing and comparing GNNs and other machine learning *** use this platform to optimize and evaluate a selection of top performing GNNs on several representative datasets in computational materials *** our investigations we note the importance of hyperparameter selection and find roughly similar performances for the top models once *** identify several strengths in GNNs over conventional models in cases with compositionally diverse datasets and in its overall flexibility with respect to inputs,due to learned rather than defined *** several weaknesses of GNNs are also observed including high data requirements,and suggestions for further improvement for applications in materials chemistry are discussed.

关键词： field chemistry intense

Interactive association between processing induced molecular structure changes and nutrient delivery on a molecular basis,revealed by cutting-edge vibrational biomolecular spectroscopy

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Journal of Animal Science and Biotechnology 2020年第1期11卷 211-226页

作者： Aya Ismael victor Hugo Guevara-Oquendo Basim Refat Peiqiang Yu Ministry of Agriculture Strategic Research Chair(PY)lab Department of Animal and Poultry ScienceCollege of Agriculture and BioresourcesUniversity of Saskatchewan51 Campus DriveSaskatoonSK S7N 5A8Canada

Background:This study was conducted to determine protein molecular structure profiles and quantify the relationship between protein structural features and protein metabolism and bioavailability of blend pel eted products(BPP)based on co-products(canola or carinata)from processing with different proportions of pulse pea screenings and lignosulfonate chemical ***:The protein molecular structures were determined using the non-invasive advanced vibrational molecular spectroscopy(ATR-FT/IR)in terms of chemical structure and biofunctional groups of amides(ⅠandⅡ),α-helix andβ-***:The results showed that increasing the level of the co-products in BPP significantly increased the spectral intensity of the amide area and amide *** products exhibited similar protein secondaryα-helix toβ-sheet *** protein molecular structure profiles(amidesⅠandⅡ,α-helix toβ-sheet)were highly associated with protein degradation kinetics and intestinal *** conclusion,the non-invasive vibrational molecular spectroscopy(ATR-FT/IR)could be used to detect inherent structural make-up characteristics in ***:The molecular structural features related to protein biopolymer were highly associated with protein utilization and metabolism.

关键词： Alpha-helix and beta-sheet Amides(ⅠandⅡ) Biofunctional groups Chemical structure Protein metabolism and bioavailability Protein molecular structure

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