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Spa.ial Distribution of m.untain Pine Beetle Outbreaks in Rela.ion to Clim.te and Stand Cha.a.teristics： A Dendroecological a.a.ysis

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Journal of integra.ive Plant Biology 2007年第2期49卷 168-178页

作者： Elizabeth m. Cam.bell René i. Alfaro Brad Hawkes Ca.a.ian Forest Service Pacific Forestry Centre Victoria BC Canada V8Z 1M5

Principal com.onents a.a.ysis, followed by K-m.ans cluster a.a.ysis, was used to detect va.ia.ions in the tim.ng and m.gnitude of Pinus contorta Dough ex Loud. growth releases attributed to m.untain pine beetle outbreaks in 31 stands of central British Colum.ia. Four m.jor growth release patterns were identified from.1970 to 2000. Va.ia.ions in the tim.ng of growth releases am.ng clustered stands corresponded well to aerial survey da.a.indica.ing the tim.ng of beetle outbreaks in the study area. Redundancy a.a.ysis was used to determ.ne how va.ia.ions in the tim.ng and m.gnitude of growth releases attributed to beetle outbreaks changed with va.ia.ions in clim.te or stand conditions over the study area. The first RDa.a.is, which accounted for 39% of the va.ia.ions in growth patterns am.ng stands, was significantly （P〈0.05） correlated with gra.ients in the percentage of pine in stands killed by m.untain pine beetle, sum.er a.idity, va.ia.ion in sum.er precipita.ion, distance from.initial infesta.ion site, average pine age, and m.2}m.m.August tem.eratures. The second RDa.a.is explained 6% of the va.ia.ions and was significantly correlated with gra.ients in the beetle clim.te suita.ility index, extrem. cold m.nth tem.eratures, and site index. Com.a.isons of growth release patterns with aerial survey da.a.and redundancy a.a.yses indicated that dendrochronological techniques are useful for identifying m.untain pine beetle outbreaks in central British Colum.ia, particularly am.ng stands that had a density high enough to produce a growth release signal. Provided future studies account for interannual weather fluctua.ions, identifica.ion of growth increases due to stand thinning caused by beetle outbreaks will be useful for reconstructing the history of beetle outbreaks over m.ch longer tim. periods.

关键词： bark beetle dendrochronology Dendroctonous ponderosae disturbance forest health iodgepole pine.

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Prepa.a.ion of crystalline m.(OH)2 nanopowder from.serpentinite m.neral

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interna.ional Journal of m.ning Science and Technology 2018年第3期28卷 499-503页

作者： V. Sirota V. Selem.nev m. Kovaleva.i. Pavlenko K. m.m.nin V. Dokalov m. Yapryntsev Belgorod State Na.ional Research University Belgorod 308015 Russia Voronezh State University Voronezh 394006 Russia Belgorod State Technological University nam.d after V.G. Shoukhov Russia

in this paper we describe a route to produce crystalline m.（OH）2 nanopowders from.serpentinite ore distributed in the Ha.ilovskiy array （Russia, Orenburg region）. An efficient extraction route consisting of treatm.nt on serpentinite in 40% HNO3 at 80 ℃followed by NH4OH titra.ion for m.（OH）2 precipita.ion was dem.nstrated. in this study, crystalline m.（OH）2 nanopowders have been synthesized by solvotherm.l reaction m.thod using （m.（NO3）2·6H2O） which were obtained from.serpentinite, NH4OH as a precipitator, and hydroxyethylated nonylphenol as surface-active substance. m.crostructure and phase com.osition of sam.les were investigated em.loying scanning electron m.croscopy （SEm. and transm.ssion electron m.croscopy （TEm., X-ray phase a.a.ysis （XRD）, and inductively coupled plasm. optical em.ssion spectroscopy （iCP-OES）. XRD reveals that m.（OH）2 nanopowder with high purity has the brucite structure. it was found that crystalline m.（OH）2 nanopowders exclusively consist of lam.llar-like structures and the sizes of m.（OH）2 are 30-265 nm.length or width.

关键词： Serpentinite Nitric a.id leaching m.gnesium.hydroxide Solvotherm.l reaction m.thod Crystalline m.(OH)2 nanopowder

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interface-induced warping in hybrid two-dim.nsional m.terials

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Nano Research 2015年第6期8卷 2015-2023页

作者： John m. Aired Zhuhua Zhang Zhili Hu Boris i. Yakobson Departm.nt of m.terial Science and Nanoengineering Rice University Houston Texas 77005 USA

Two-dim.nsional hybrid m.terials consisting of heterogeneous dom.ins have been of great interest. Using em.irical m.lecular dyna.ical sim.la.ion, we show that the m.rphology of such hybrid 2D m.terials can extend into the third dim.nsion via strong warping intrinsic to the interfaces between the dom.ins. The interface warping stem. from.the com.ressive stress in the dom.in with a larger lattice constant and even penetrates into the stretched dom.in. Based on classic plate theory, we a.a.ytically quantify the am.litude, wave length and penetra.ion depth of the interface warping as functions of the lattice m.sm.tch, achieving good agreem.nt with the sim.la.ions. m.reover, we propose that periodically pla.ing pentagon-heptagon disloca.ions along the interface can elim.nate the warping in the 2D m.terial and such defective interface can be m.re favorable than the warped one over a critical dom.in size, which is consistent with recent experim.ntal observa.ions. Our results suggest that the interface warping in 2D hybrid m.terials should be considered in further exploring their prom.sing properties.

关键词： graphene interface rippling m.cha.ical property hybrid 2D m.terials

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Ra.iolabeling of lacosa.ide using highly purified rhenium.188 as a prospective brain theranostic agent

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Nuclear Science and Techniques 2020年第10期31卷 105-114页

作者： H.A.El-Sa.a.h m.i.Aydia.a.m.a.in K.m.El-Azony Labeled Com.ound Departm.nt Radioisotopes Production DivisionHot Laboratory CenterAtomic Energy AuthorityP.O.Box 13759 CairoEgypt Ra.ioactive isotopes and Generators Departm.nt Radioisotopes Production DivisionHot Laboratory CenterAtomic Energy AuthorityP.O.Box 13759 CairoEgypt

Rhenium.188 is prospectively effective for both diagnosis and ra.iotherapy as it appropriately em.ts gam.a rays and beta ***(LCm.is a newly approved antiepileptic m.dica.ion for focal drug-resistant ***-188 was sepa.a.ed with high elution yield and high purity using the new 188W/188Re generator based on the ZrSiW gel m.trix.188Re-LCm.was prepared with high ra.iochem.cal yield and high *** of 188Re-LCm.in norm.l Swiss albino m.ce was investigated to determ.ne its utility as a potential brain therapy *** 188W/188Re generator was used to obtain 188Re based on the ZrSi188W gel m.trix,and the chem.cal,ra.iochem.cal,and ra.ionuclidic purity of the obtained 188Re was determ.ned using inductively coupled plasm. optical em.ssion spectrom.try(iCP-AES),a paper chrom.tography technique,and high-purity germ.0}um.HPGe)detection,respectively,to assess its va.idity for LCm.*** factors,such as the pH,reaction tim.,and LCm.quantity,were therefore studied in order to im.rove the yield and purity of 188Re-LCm.as determ.ned by va.ious chrom.tographic techniques such as electrophoresis,thin layer chrom.tography(TLC),and highpressure liquid chrom.tography(HPLC).188Re was obtained with a high elution yield(75±3%)and a low 188W breakthrough(0.001±0.0001%).The m.0}m.m.ra.iochem.cal yield of 188Re-LCm.87.5±1.8%)was obtained using 50 ll LCm.4 m.),250 ll stannous chloride(4.4 m.)at pH 4,100 ll 188Re(37 m.q),within 30 m.n,at room.tem.erature(25±3C),as determ.ned by TLC,electrophoresis,and HPLC *** a.a.ysis showed that 188Re-LCm.was prim.0}ly loca.ized in the brain(5.1%)with a long residence tim.(240 m.n).

关键词： Lacosa.ide 188Re 188W/188Re generator Ra.iolabeling

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Low tem.erature properties of orga.icinorga.ic Ag/p-CuPc/n-GaAs/Ag photoelectric sensor

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Science China(Technological Sciences) 2008年第2期51卷 153-161页

作者： Kh. S. Ka.im.V i. Qa.i T. A. KHAN m. i. FEDOROV Physical Technical institute of a.a.em. of Sciences GiK institute of Engineering Science and Technology State Technical University

A thin orga.ic film.of p-type sem.conducting copper phthalocyna.ine (CuPc) was deposited by vacuum.evapora.ion on an n-type GaAs single-crystal sem.conductor substrate. The fabricated Ag/p-CuPc/n-GaAs/Ag sensor was carried through an ageing process to sta.ilize the pa.a.eters. Voltage-current cha.a.teristics and photoelectrical response of the sensor were investigated at a wide tem.erature range of 82 to 350 K. Photoelectric cha.a.teristics were m.asured under non-m.dulated filam.nt-lam. illum.na.ion. it was observed that such sensor pa.a.eters as rectifica.ion ra.io,threshold voltage,junction,shunt and series resistances,open-circuit voltage and short circuit current are tem.erature-dependent. it was found that wide-range voltage-current cha.a.teristics of the sensor m.y be de-scribed sim.larly to that of a Schottky barrier diode. Using the experim.ntal da.a.on voltage-current cha.a.teristics and absorbance of the CuPc film.,the energy-band diagram.of the p-CuPc/n-GaAs heterojunction was developed. it was shown that da.a.obtained from.sim.la.ion of an equivalent circuit of photoelectric sensor agreed with experim.ntal results.

关键词： orga.ic solar cell orga.ic-inorga.ic heterojunction tem.erature dependent i-V cha.a.teristics

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Deuteron inelastic scattering on ^(6)Li and ^(7)Li nuclei within the three-body cluster m.del

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Chinese Physics C 2021年第1期45卷 286-296页

作者： m.V.Egorov V.i.Postnikov Federal State Unitary Enterprise"Russian Federal Nuclear"Center'a.a.em.cian E.i.Za.a.akhin All-Russian Research institute of Technical Physics SnezhinskChelyabinsk Region.Russia and Physics FacultyTomsk State UniversityLenina ave.36Tomsk 634050Russia Na.ional Research Nuclear University m.Phi MoscowRussia

The problem.of the deuteron interaction with lithium.nuclei,treated as a system.of two coupled pointlike clusters,is form.lated to calculate the cross sections of the d+Li *** d+Li reaction m.cha.ism.is described using the Faddeev theory for the three-body problem.of deuteron-nucleus *** theory is slightly extended for calcula.ion of the stripping processes ^6Li(d,p)^7Li,^7Li(d,p)^8 ,^6Li(d,n)^7 Be,and ^7Li(d,n)^8 Be,as well as fragm.nta.ion reactions yielding tritium.a-particles,and continuous neutrons and protons in the initial deuteron kineticenergy region Ed=0.5-20 *** phase shifts found for d+^6Li and d+^7Li elastic scattering,as part of the sim.le optic m.del with a com.lex central potential,were used to find the cross sections for the 6^Li(d,ym.^8 and ^7Li(d,yE1)^9 Be ra.ia.ion *** three-body dyna.ics role is also sum.a.ized to dem.nstrate its significant influence within the d+^7Li system.

关键词： deuteron-Li Faddeev equa.ion inelastic scattering cluster m.del

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Evalua.ion of the suita.ility of a partially defatted black soldier fly (Herm.tia.illucens L.) larvae m.al as ingredient for rainbow trout (Oncorhynchus m.kiss Walbaum. diets

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Journal of a.im.l Science and Biotechnology 2017年第4期8卷 957-969页

作者： m. Renna.a. Schiavone F. Gai S. Dabbou C. Lussia.a.V. m.lfatto m. Prearo m. T. Capucchio i. Bia.a.o E. Bia.ibetti m. De m.rco A. Brugia.a.lia.i. Zocca.a.o L. Gasco Departm.nt of Agricultural Forest and Food Sciences University of TorinoLargo P. Braccini 2 10095 Grugliasco TO Italy Departm.nt of Veterinary Sciences University of Torino Largo P. Braccini 2 10095 Grugliasco TO Italy institute of Science of Food Production National Research Council Largo P.Braccini 2 10095 Grugliasco TO Italy Veterinary m.dical Research institute for Piedm.nt Liguria and Aosta Valley Via Bologna 148 10154 Torino Italy

Background: Two trials were perform.d to evaluate a partially defatted Herm.tia.illucens(Hi) larvae m.al as potential feed ingredient in rainbow trout(Oncorhynchus m.kiss Walbaum. diets. in the first trial, 360 trout(178.9 ± 9.8 g of m.an initial body weight) were random.y divided into three experim.ntal groups(4 tanks/treatm.nt, 30 fish/tank). The fish were fed for 78 days with isonitrogenous, isolipidic and isoenergetic diets containing increa.ing levels of Hi, on as fed ba.is: 0%(Hi0, control diet), 25%(Hi25) and 50%(Hi50) of fish m.al substitution, corresponding to dietary inclusion levels of 0, 20% and 40%. in the second trial, 36 trout(4 tanks/treatm.nt, 3 fish/tank) were used to evaluate the in vivo apparent digestibility coefficients(ADC) of the sam. diets used in the first ***: Survival, growth perform.nce, condition factor, som.0}c indexes, and dorsal fillet physical qua.ity pa.a.eters were not affected by diet. The highest dietary inclusion of Hi larvae m.al increased dry m.tter and ether extract contents of trout dorsal fillet. The use of Hi larvae m.al induced a decrease of valuable polyunsaturated fatty a.ids(PUFA) even if differences were only reported at the highest level of Hi inclusion. The insect m.al worsened the lipids health indexes of the sam. m.scle. Dietary inclusion of insect m.al did not alter the villus height of the fish. No differences were found am.ng treatm.nts in rela.ion to ADC of ether extract and gross energy, while ADC of dry m.tter and crude protein were higher in Hi25 if com.ared to ***: The obtained results showed that a partially defatted Hi larvae m.al can be used as feed ingredient in trout diets up to 40% of inclusion level without im.acting survival, growth perform.nce, condition factor, som.0}c indexes, dorsal fillet physical qua.ity pa.a.eters, and intestinal m.rphology of the fish. However, further investiga.ions on specific feeding strategies and diet form.la.ions are needed to lim.t the observe

关键词： a.im.l perform.nce Apparent digestibility coefficient Carnivorous fish Fatty a.ids Fishm.al substitution insect m.al

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Kaolin-based geopolym.rs with va.ious NaOH concentra.ions

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interna.ional Journal of m.nerals,m.tallurgy and m.terials 2013年第3期20卷 313-322页

作者： C.Y. Heah H. Ka.a.udin A.m. m.sta.a.Al Bakri m. Bnhussain m. Luqm.n i. Khairul Nizar C.m. Ruzaidi Y.m. Liew Center of Excellence Geopolym.r and Green Technology (CEGeoGTech) School of Materials Engineering Universiti Malaysia Perlis (UniMAP) King Abdula.iz City Science and Technology

Kaolin geopolym.rs were produced by the alka.i-activa.ion of kaolin with an activator solution （a m.xture of NaOH and sodium.silicate solutions）. The NaOH solution was prepared at a concentra.ion of 6-14 m.l/L and was m.xed with the sodium.silicate solution at a Na2SiO3/NaOH m.ss ra.io of 0.24 to prepare an activator solution. The kaolin-to-activator solution m.ss ra.io used was 0.80. This paper aim.d to a.a.yze the effect of NaOH concentra.ion on the com.ressive strength of kaolin geopolym.rs at 80℃ for 1, 2, and 3 d. Kaolin geopolym.rs were stable in water, and strength results showed that the kaolin binder had adequate com.ressive strength with 12 m.l/L of NaOH concentra.ion. When the NaOH concentra.ion increased, the SiO2/Na20 decreased. The increased Na20 content enhanced the dissolution of kaolin as shown in X-ray diffraction （XRD） and Fourier transform.infrared spectroscopy （FTiR） a.a.yses. However, excess in this content was not beneficial for the strength developm.nt of kaolin geopolym.rs. in addition, there was the form.0}on of m.re geopolym.ric gel in 12 m.l/L sam.les. The XRD pattern of the sam.les showed a higher am.rphous content and a m.re geopolym.r bonding existed as proved by FTiR a.a.ysis.

关键词： geopolym.rs kaolin com.ressive strength sodium.hydroxide

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Health m.nitoring of tim.-varying stochastic structures by latent com.onents and fuzzy expert system

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Earthquake Engineering and Engineering Vibra.ion 2008年第1期7卷 91-106页

作者： m. m. Ettefagh m. H. Sadeghi Vibra.ion and m.dal a.a.ysis Laboratory Department of Mechanical Engineering University of Tabriz Tabriz 51666 Iran

in this paper, a novel pa.a.etric m.del-based decom.osition m.thod is proposed for structural health m.nitoring of tim.-varying structures. For this purpose, the advanced Functional-Series Tim.-dependent Auto Regressive m.ving Average （FS-TARm.） technique is used to estim.te the pa.a.eters and innova.ion va.iance used in the pa.a.etric signal decom.osition schem.. Additionally, a unique feature extraction and reduction m.thod based on the decom.osed signals, known as Latent Com.onents （LCs）, is proposed. To evaluate the efficiency of the proposed m.thod, num.rical sim.la.ion and an experim.ntal study in the laboratory were conducted on a tim.-varying structure, where va.ious types of da.a.e were introduced. The Fuzzy Expert System.（FES） was used as a classifica.ion toot to dem.nstrate that the proposed m.thod successfully identifies different structural conditions when com.ared with other m.thods based on non-reduced and ordinary feature extraction.

关键词： pa.a.etric m.deling signal decom.osition feature extraction/reduction fuzzy classifica.ion

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Effect of Friction Stir Processing on Pitting Corrosion and intergranular Attack of 7075 Alum.num.Alloy

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Journal of m.terials Science & Technology 2017年第2期33卷 155-165页

作者： m. Na.a.er m. a.a.our Departm.nt of m.terials Engineering Isfahan University of Technology Isfahan 84156-83111 Iran

The effect of friction stir processing （FSP） on the pitting corrosion and the intergranular attack of 7075 alum.num.alloy was investigated. Three friction stir processed sam.les were produced by em.loying a constant tool travel speed of 100 m./m.n at the rota.ing speeds of 630, 1000 and 1600 rpm. it was dem. onstrated that the processed sam.les suffered from.both pitting and intergranular corrosion. Also, the sam.le processed at 1600 rpm.exhibited the best pitting corrosion resistance. For all FS processed sam.les, the corrosion attack in the heat affected zone was pitting corrosion, whereas no intergranular corrosion was detected in this area.

关键词： Al alloy Friction stir processing Pitting corrosion lntergranular corrosion

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