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Effects of Hypofractionated and Standard Fractionated Irradiation of Mice Heads with Gamma-Rays and Protons on Their Pheripheral Blood Parameters and Behavior

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Journal of physical Science and Application 2016年第3期6卷 30-36页

作者： K. Sh. Voskanyan A. V. Rzyanina D. M. Borowicz G. V. Mitsyn V. N. Gaevsky A. G. Molokanov Joint institute for Nuclear Research Dubna Russia Department of Medical physic the Greater Poland Cancer Centre Poznan Poland

Experiments were performed to study the action of fractionated irradiation of mice heads with γ-rays and protons on their peripheral blood parameters and behavior by the ＂Open Field＂ test. Mice were irradiated in two variants of fractionated irradiation：（1） traditional fractionation （in radiation therapy）： 2 Gy once a day, 5 times a week, the total radiation dose 20 Gy; （2） extreme hypofractionation： 10 Gy once a week, on Mondays, the total radiation dose 20 Gy. The results of the study showed that irradiation of mice heads has no effect on their peripheral blood parameters in both variants of the applied fractionated irradiation and the behavior of mice does not depend on the type of ionizing radiation and the variant of fractionated exposure that we used. On the basis of these results it can be concluded that the option of extreme hypofractionation we have chosen can successfully replace traditional fractionation, which in some cases is applied when carrying out radiotherapy for treating brain tumors. The application of this type of fractionation can lead to shorter terms of radiotherapy and bigger patient capacity of medical centers that conduct radiotherapy.

关键词： Radiation therapy normal tissue traditional fractionation extreme hypofractionation.

Elemental Composition of PM<sub>2.5</sub>in Araraquara City (Southeast Brazil) during Seasons with and without Sugar Cane Burning

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Journal of Environmental Protection 2015年第5期6卷 426-434页

作者： Flavio Soares Silva Ricardo Henrique Moreton Godoi Romà T auler Paulo Afonso de André Paulo Hilário Nascimento Saldiva Rene van Grieken Mary Rosa Rodrigues de Marchi physic and chemistry institute Federal University of Itajubá (UNIFEI) Itajubá Brazil Environmental Engineering Department Federal University of Paraná (UFPR) Curitiba Brazil institute for Environmental Assessment and Water Research (IDAEA-CSIC) Barcelona Spain Department of Pathology Faculty of Medicine University of Sao Paulo (USP) Sao Paulo Brazil Department of chemistry University of Antwerp Antwerp Belgium Analytical chemistry Department Institute of Chemistry Univ Estadual Paulista (Unesp) Araraquara Brazil

Particulate matter with an aerodynamic diameter below 2.5 μm (PM2.5), present in polluted air, has been associated with a large spectrum of health impairments, mainly because of its deep deposition into the lungs. Araraquara City (Southeast Brazil) is surrounded by sugar-cane plantations, which are burned to facilitate the harvesting;this process causes environmental pollution due to the large amounts of soot that are released into the atmosphere. In this work, the elemental composition of PM2.5 was studied in two scenarios, namely in sugar-cane harvesting (HV) and in non-harvesting (NHV) seasons. The sampling strategy included one campaign in each season. PM2.5 was collected using a dichotomous sampler (10 L·min-1, 24 h) with PTFE filters. Information concerning the bulk elemental concentration was provided by energy-dispersive X-ray fluorescence. Enrichment factor analysis indicated that S, Cl, K, Cr, Ni, Cu, Zn, As, Cd and Pb were highly enriched relative to their crustal ratios (to Al). Principal component analysis was used to get some insight about the sources of the elements. Principal component 1 (PC1) explained 30.5% of data variance. The elements that had high loading (>0.7) were: S, Cr, As, and Pb;these are associated with combustion of fossil fuels. In principal component 2 (PC2), Cl, Cu, Zn, and Cd showed high loadings;these elements are associated with biomass burning. The Ni concentration found is three times larger than the threshold of risk for lung cancer, as recommended by the World Health Organization.

关键词： Sugar-Cane Burning PM2.5 Individual Particle Analysis EDXRF Cluster Analysis Principal Components Analysis

Mass Rock Fall Prediction in Zhezkazgan Mines at the Basis of Seismic Regime Analyzing.

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CT理论与应用研究（中英文） 2000年第Z1期9卷 91-94页

作者： Tomilin N.G Kuksenko V.S Pavlov P.I Setov M.Zh Mansurov V.A A.F. Ioffe physic o-Tekhnical institute Russian Academy of Sciences Siberian Aerospace Academy Khazahmis corporation

Zhezkazgan copper deposit is strongly exploited since 1942. Its typical feature is multilevel mineralization. Mine′s thickness of sedimentary rock. Primary copper supply is from 150 to 450meters in depth. Capacity of ore body is 1,5～30 m; suddenly 30 - 60 meters. High capacity parts of deposit is mined oUt by room -pillar system. Stress state of rock mass of the deposit is characterized by that, what horizontal stresses is higher in 4～ 10 times than vertical stresses, which is caused by weight of straining thickness of sedimentary rock and submeridianally oriented. At present over than 50 thousands of pillars is formed as the result of deposit mining. Mined oUt area is divided on separate parts by over than 400 barrier and chain pillars. Spread of primary traderground tunnels exceeds 1200 kilometers, 540kilometers of the spread is operating mines. Tens of any purposes shafts are exploited with general spread of 45 kilometers. Some its decreasing at last time is caused by filling of emptiness by loosened rock as the result of happening falls at mines (Fig. 1).

关键词： Mass Rock Fall Prediction in Zhezkazgan Mines at the Basis of Seismic Regime Analyzing rock

Time Evolution of the Lamb Shift

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Time Evolution of the Lamb Shift

Spin-cluster glass state in U(Ga0.95Mn0.05)3

第十四届全国量子光学学术会议

作者： M.Suhail Zubairy institute for Quantum Studies and Department of physic Texas A＆M UniversityCollege StationTexas 77843

＜正＞The time evolution of the Lamb shift that accompanies the real photon emission is studied for the first time. The investigation of the explicit time-dependence of the Lamb shift becomes possible because the self-energy of the free electron,which is divergent,is subtracted from the Hamiltonian after a unitary ***

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Chinese physics B 2016年第4期25卷 365-369页

作者：谢东华张文刘毅冯卫张云谭世勇朱燮刚陈秋云刘琴袁秉凯赖新春 Beijing institute of Technology Beijing 100081 China Science and Technology on Surface physics and chemistry Laboratory Mianyang 621700 China

We report the study of a low temperature cluster glass state in 5% Mn-doped UGa3 heavy fermion compound. This compound transforms from a paramagnetic state to a spin-cluster glass state, which is confirmed by measuring the dc susceptibility and magnetization. The ac susceptibility exhibits a frequency-dependent peak around Tf, which provides direct evidence of the cluster glass state. By analyzing the field-dependent magnetization and frequency-dependent ac susceptibility in detail, we deduce that this compound forms a spin-cluster glass state below Tf.

关键词： spin-cluster glass U(Ga0.95Mn0.05)3 magnetic properties

Monitoring of Cryolithozone

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Monitoring of Cryolithozone

A comparison of the strength and position variability of the Kuroshio Extension SST front

第八届国际冻土工程会议

作者： Akhat A.Akhmetshin Vladimir A.Grigoryev Vill S.Yakupov Ministry of nature protecting RS(Yakutiya) institute of space physic and aeronomy SB RAS YakutskRussia

＜正＞Monitoring of stationary and degradating cryolithozone parameters as consequences of quick climate changes by geophysical methods and possibility of their secular changes estimation are *** first stage of monitoring provides for a description of cryolithozone some number of in space distributed determinations of its parameters and their change with *** seems to be expedient estimation and study of the change with time of following parameters of frozen strata. *** layer thickness. *** of south border of frozen strata. *** annual temperature of frozen rocks. *** of interfaces,corresponding to thawing fronts in the bottom of degradating frozen strata consequently of a change of different physical properties on them. These parameters react on climate change in mentioned above order,beginning with active layer thickness. Possible indirect indications of significant fluctuations of frozen strata thickness in past may be often met zones of fractured rocks in their base as a result of many times repeated lingering changes of climate.A depth of saturated by salt solutions rocks freezing in ancient times at more cold epochs may be estimated by a study of anomalous increasing of subpermafrost waters mineralization. For safe determination of expected changes of parameters to be examined it is necessary to receive data, scattered both in space and in time in order to construct distribution functions and regression equations of studied parameters on time better for plains or their big sites,in general for landscapes of one type. Observations rrtust be independent,their number must be taken enough for a standard deviation for a given extract do not exceed average square error of observations.

关键词： active layer average annual temperature cryolithozone monitoring

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Acta Oceanologica Sinica 2020年第5期39卷 26-34页

作者： Peilong Yu Lifeng Zhang Mingyang Liu Quanjia Zhong Yongchui Zhang Xin Li College of Meteorology and Oceanography National University of Defense TechnologyNanjing 211101China No.91939 Troops of PLA Jiangmen 529100China State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics(LASG) Institute of Atmospheric PhysicChinese Academy of SciencesBeijing 100029China College of Earth Science University of Chinese Academy of SciencesBeijing 100049China

This study compares the seasonal and interannual-to-decadal variability in the strength and position of the Kuroshio Extension front(KEF)using high-resolution satellite-derived sea surface temperature(SST)and sea surface height(SSH)*** show that the KEF strength has an obvious seasonal variation that is similar at different longitudes,with a stronger(weaker)KEF during the cold(warm)***,the seasonal variation in the KEF position is relatively weak and varies with *** contrast,the low-frequency variation of the KEF position is more distinct than that of the KEF strength even though they are well *** both seasonal and interannual-to-decadal time scales,the western part of the KEF(142°–144°E)has the greatest variability in strength,while the eastern part of the KEF(149°–155°E)has the greatest variability in *** addition,the relationships between wind-forced Rossby waves and the low-frequency variability in the KEF strength and position are also discussed by using the statistical analysis methods and a wind-driven hindcast model.A positive(negative)North Pacific Oscillation(NPO)-like atmospheric forcing generates positive(negative)SSH anomalies over the central North *** oceanic signals then propagate westward as Rossby waves,reaching the KE region about three years later,favoring a strengthened(weakened)and northward(southward)-moving KEF.

关键词： sea surface temperature Kuroshio Extension front North Pacific Oscillation-like atmospheric forcing oceanic Rossby waves

Tribological performance under different environments of Ti-C-N composite films for marine wear-resistant parts

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International Journal of Minerals,Metallurgy and Materials 2023年第1期30卷 144-155页

作者： Hongbo Ju Rui Zhou Jing Luan Ch Sateesh Kumar Lihua Yu Junhua Xu Junfeng Yang Bowei Zhang Filipe Fernandes School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China CEMMPRE—Centre for Mechanical Engineering Materials and Processes Department of Mechanical EngineeringUniversity of CoimbraCoimbra 3030-788Portugal CFAA University of the Basque Country UPV/EHUBilbao 48170Spain ISEP-School of Engineering Polytechnic of PortoPorto 4200-072Portugal Key Laboratory of Materials physic Institute of Solid State PhysicsHefei Institute of Physical SciencesChinese Academy of SciencesHefei 230031China institute for Advanced Materials and Technology University of Science and Technology BeijingBeijing 100083China

The need for reducing the wear in mechanical parts used in the industry makes self-lubricant films one of the sustainable solutions to achieve long-term protection under different environmental *** purpose of this work is to study the influence of C additions on the tribological behavior of a magnetron-sputtered TiN film in air,water,and *** results show that the addition of C into the TiN binary film induced a new amorphous phase,and the films exhibited a dual phase of fcc(face-centered cubic)-TiN and amorphous *** antifriction and wear-resistance properties were enhanced in air and water by adding 19.1at%***,a further increase in the C concentration improved anti-frictional properties but also led to higher wear *** the amorphous phase induced microbatteries and accelerated the corrosion of TiN phases in seawater,the negative abrasion state was detected for all Ti-C-N films due to the adhesion of the tribocorrosion debris on the wear track.

关键词： RF reactive magnetron sputtering Ti-C-N films microstructure tribological properties in air/water/seawater

Recent advances in controlling the crystallization of two-dimensional perovskites for optoelectronic device

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Frontiers of physics 2019年第5期14卷 1-17页

作者： Shi-Qiang Luo Ji-Fei Wang Bin Yang Yong-Bo Yuan Hunan Key Laboratory of Super Micro structure and Ultrafast Process School of Physics and ElectronicsCentral South UniversityChangsha 410083China College of physic and Electric Information Hunan Institute of Science and TechenologyYueyang 414006China College of Materials Science and Engineering Hunan UniversityChangsha 410082China Hunan Province Key Laboratory for Advanced Carbon Materials and Applied Technology Hunan UniversityChangsha 410082China

Though three-dimensional (3D) organic inorganic halide perovskites (OIHP) is very promising for low cost and distributed PV generation,the stability issue of 3D OIHP is still a problem for its ***-dimensional (2D) perovskites,protected by periodic organic ligands,is promising due to its excellent optoelectronic property and superior ***,2D perovskitc is anisotropic in its crystal structure and optoelectronic properties,and the resulted film is often a mixture of different ***,methods to manipulate 2D perovskitc crystal orientation and its phase separation are *** this review,the major advances on the composition engineering,crystal orientation,phase separa-tion,and inlerfaeial capping are ***,efforts on understanding the formation process of 2D perovskitc crystal arc also discussed,which is important for making full use of 2D perovskitc in functional optoelectronic devices.

关键词： optoelectronic devices perovskite solar cells nanoscale materials chemical vapor deposition