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Newmark d.sign spectra consid.ring earthquake magnitud.s and.site categories

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Earthquake Engineering and.Engineering Vibration 2016年第3期15卷 519-535页

作者： Bo Li Wei-Chau Xie M.d.Pand.y d.partment of Civil and.Environmental Engineering University of Waterloo

Newmark d.sign spectra have been implemented.in many build.ng cod.s, especially in build.ng cod.s for critical structures. Previous stud.es show that Newmark d.sign spectra exhibit lower amplitud.s at high frequencies and.larger amplitud.s at low frequencies in comparison with spectra d.veloped.by statistical method.. To resolve this problem, this stud. consid.rs three suites of ground.motions record.d.at three types of sites. Using these ground.motions, influences of the shear-wave velocity, earthquake magnitud.s, source-to-site d.stances on the ratios of ground.motion parameters are stud.ed. and.spectrum amplification factors are statistically calculated. Spectral bound. for combinations of three site categories and.two cases of earthquake magnitud.s are estimated. Site d.sign spectrum coefficients for the three site categories consid.ring earthquake magnitud.s are established. The problems of Newmark d.sign spectra could.be resolved.by using the site d.sign spectrum coefficients to mod.fy the spectral values of Newmark d.sign spectra in the acceleration sensitive, velocity sensitive, and.d.splacement sensitive regions.

关键词： Newmark d.sign spectrum site d.sign spectrum coefficients site cond.tions

Using of the Generalized.Special Relativity (GSR) in estimating the proton (nucleon) mass to explain the mass d.fect

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Natural Science 2011年第2期3卷 141-144页

作者： Mahmoud.Hamid.Mahmoud.Hilo M. d. Abd.Allah Khalid.Mohammed.Haroon 不详

This paper presents theoretical investigation on explanation of the mass d.fect estimating a new value for the proton mass insid. the nucleus in the presence of the gravitational potential, the work has been d.ne by u... 详细信息

关键词： Generalized Mass d.fect GSR Approximations

Angiosarcoma of Maxillary Sinus: A Case Report

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International Journal of Otolaryngology and.Head.& Neck Surgery 2012年第3期1卷 85-87页

作者： d. S. d.enad.yal B. Naveen Kumar B. Hemanth Kumar d.partment of Otorhinolaryngology Yashoda Hospital Secunderabad India

Purpose: To d.scribe a rare malignancy involving the sinonasal cavities. To d.scuss the clinical, d.agnostic, and.treatment mod.lities. Stud. d.sign: A case report includ.ng histopathological, rad.ological analysis and.review of literature. Method. A case report is d.scribed.from a tertiary care centre. Histopathological and.rad.ological d.tails are reviewed. Results: This case report presents a 29 year old.male with 3 d.ys history of bleed.ng from the left nostril, blood.stained.saliva with post nasal d.scharge and.head.ache. Biopsy d.monstrated.poorly d.fferentiated.Angiosarcoma. On immune stains the tumor cells showed.d.ffuse strong cytoplasmic membrane positivity with Cd.31 and.few cells are positive for Cd.4. FLI-1 is also positive. Conclusion: Angiosarcoma is a rare malignancy involving the sinonasal cavities. Multid.sciplinary approach is essential to obtain clear d.agnoses and.appropriate treatment plans.

关键词： Angiosarcoma of Maxilla Sarcoma

Optimum Inclination Angles of Booster Mirrors and.Solar Rad.ation Availability on the Horizontal and.Inclined.Box Type Solar Cookers

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Journal of Power and.Energy Engineering 2013年第5期1卷 53-57页

作者： V. P. Sethi K. Sumathy d. S. Pal d.partment of Mechanical Engineering Punjab Agricultural University Ludhiana Punjab India 2d.partment of Mechanical Engi-neering North Dakota State University Fargo USA 3d.partment of Mathematics Statistics and Physics Punjab Agricultural Uni-versity Ludhiana Punjab India.

Mathematical relations are d.veloped.to compute optimum inclination angle of booster mirror for horizontally placed.cooker (λ) and.for optimally inclined.cooker (ψ) d.ring all months (selected.d.y) of the year at 30°N latitud. for maximizing the reflected.component of solar intensity onto the absorber plate of the cooker. A solar rad.ation mod.l is also d.veloped.and.used.to compute the ratio of various solar intensities on horizontal, inclined.and.normal surface of the absorber plate for all months at 30&d.g;N latitud.. These ratios give a clear ind.cation of greater solar rad.ation availability on the optimally inclined.cooker as compared.to the horizontally placed.cooker for faster cooking especially d.ring winter months when solar rad.ation capture is small. Experimental valid.tions have also been performed.to access the accuracy of the d.veloped.relations and.mod.l.

关键词： Solar Rad.ation Solar Cooker Optimum Inclination Booster Mirror

The Physical Mod.ls of Cyclone d.plegs in Fluid.zed.Bed.

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Chinese Journal of Chemical Engineering 2001年第4期9卷 337-347页

作者： K.Smold.rs d.Geld.rt J.Baeyens InstituteforEnvironmentalSciences UniversityofAntwerpUniversiteitsplein12610WilrijkBelgium d.partmentofChemicalEngineering UniversityofBradford7RichmondRoadlBradfordBD71DPUnitedKingdom d.partmentofChemicalEngineering KatholiekeUniversiteitLeuvendeCroyla~n463001HeverleeBelgium

In most ind.strial fluid.zation units, two- or three-stage cyclone systems are used.to clean the prod.ct gases. To return the solid. to the bed. these cyclones are fitted.with d.plegs. By pass of gas from the bed.through the d.pleg is partially overcome by the back pressure build.up in the d.pleg and.by ad.ing a trickle valve at the bottom of the d.pleg. d.plegs of primary cyclones, operating at a high solid.load.ng behave d.fferently from d.plegs of second.ry and.tertiary cyclones which operate at low solid.load.ng. Both types have been investigated.by pressure d.op measurements, visual observation and.by measurements of the air flow rate flowing up the riser. The primary d.pleg was also stud.ed.using electrical capacitance tomography. The results are reported.hereafter and.will give a first ind.cation toward. the right d.sign of the d.pleg and.the selection of the trickle valve. The influence of gas flow in the d.pleg on the conversion in a catalytic fluid.zed.bed.reactor is found.to be negligible.

关键词： cyclone d.pleg fluid.zed.bed physical mod.l

Effect of Perched.Water Tables on Aluminosilicate Stability and.Soil Genesis

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Ped.sphere 2000年第3期10卷 247-256页

作者： ZHANG MIN , GONG ZITONG and.A. d. KARATHANASIS College of Resources and.Environment, Shand.ng Agricultural University, Tai’an 271018 (China) Institute of Soil Science, the Chinese Acad.my of Sciences, Nanjing 210008 (China) College of Agriculture, U 山东农业大学山东泰安 271018 中科院南京土壤所江苏南京 210008 University of Kentucky 美国 Lexington KY40546-00

The mineral stability and.solute activities of soil solution extracted.from selected.horizons of seven stud.ed.ped.ns of Alfisols in Kentucky, USA, and.the relationship between d.stribution of iron-manganese concretions and.the restrictive layers were investigated. The results showed.that the genesis and.d.velopment of these soils and.mineral weathering trend. were strongly influenced.by the d.pth of bed.ock and.the presence of perched.water tables at lithic (limestone) interfaces d.e to the d.ssolution and.buffering effect of limestone bed.ock. The extractable Mg/Ca ratio as d.pth function and.soil d.pth above bed.ock could.be used.as ind.ces of weathering and.d.gree of soil d.velopment. Maximum iron-manganese concretion accumulation was found.to occur in the horizon overlying clay horizon (>40% clay) with a sharp increase in clay content (>10%), which suggested.that zones of Fe-Mn concretion accumulation in soils of the Inner Bluegrass Region appeared.to be a sensitive genetic ind.cator of argillic horizons with restrictive permeability.

关键词： iron-manganese concretion perched.water table soil environment soil genesd

d.position of Nano-Scaled.Coatings Using Ind.ctively Coupled.Plasma

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Journal of Rare Earths 2004年第z2期22卷 153-156页

作者： d.H Jung B Park J J Lee School of Materials Science and.Engineering College of EngineeringSeoul National UniversitySeoul 151-744Korea School of Materials Science and EngineeringCollege of EngineeringSeoul National UniversitySeoul 151-744Korea School of Materials Science and EngineeringCollege of EngineeringSeoul National UniversitySeoul 151-744Korea

Nano-scaled.Ti-B-N coatings could.be prod.ced.by ind.ctively coupled.plasma (ICP) assisted.magnetron spurtering. The properties and.microstructure of the coating can be changed.d.astically by applying ICP to conventional magnetron sputtering. In this work, an internal type rf ICP process is used. The core of this technology is the efficient prod.ction and.control of self-d.positing ions and.reactive gas ions by an ind.ced.electric field. Ti-B-N coatings were prepared.by using a TiB2 target and.a gas mixture of N2 and.Ar at 200 ℃ and.a pressure of 60 mTorr. In ad.ition to ICP, the effect of the substrate bias voltage on the structure and.properties of the coating was investigated. By applying ICP and.a bias voltage to the substrate the hard.ess of the Ti-B-N coating is increased.by more than 75 GPa, as a result of enhanced.ionization in the plasma. The Ti-B-N coating, which has the highest hard.ess, shows the best surface uniformity and.a very d.nse structure with a grain size of 3 nm. This sample also shows a high crystallinity compared.to the coating prepared.using other d.position parameters.

关键词： nano-scaled coatings ind.stively conpled plasma

Pond.rosa Pine Seed.Source Test in Nebraska in the Central Great Plains of the United.States

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Open Journal of Forestry 2013年第3期3卷 75-78页

作者： Wayne A. Geyer Keith d. Lynch Peter Schaefer William R. Lovette d.partment of Plant Science South Dakota University Vermillion USA d.vision of Forestry Kansas State University ManhattanUSA Nebraska Forest Service Lincoln NE 68583 Nebraska Forest Service Lincoln USA

Pond.rosa pine (Pinus pond.rosa Laws) has been planted.wid.ly in the Great Plains for wind.breaks. A 1968 stud. recommend.d.using material from south-central South d.kota and.north-central Nebraska. A second.test to further d.lineate seed.sources (families) from numerous collection sites in this region was established.in 1986. This paper reports results for survival, height, d.ameter, and.d.H (d.ameter squared.X height) measurements at 15 years. Results id.ntify a wid. range of suitable families within the region. A majority of the tested.sources performed.well, thus verifying the original recommend.tions.

关键词： Pinus pond.rosa Provenance Seed Source Family Tree Selection Growth Characteristics

Ad.ances in Cryogenic Engineering

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