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r.dar.Cr.ss-section　Imaging　of　a　r.tating　Object　with　a　Multi-fr.quency　Hologr.phy

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Jour.al of Systems Engineer.ng and Electr.nics 1997年第1期8卷 22-28页

作者： Zhou Jun, Fang Dagang, sun Jintao & Sheng Weixing ( Millimeter.Wave Tech. lab., Nanjing Univer.ity of Science and Technology, 210094, P. r. China ) Millimeter.Wave Tech. lab. Nanjing University of Science and Technology 210094 P. R. China

A new method called multi-fr.quency hologr.phy (MFH) for.two-dimensional r.dar.cr.ss-section imaging of r.tating objects is intr.duced, in which a constant coher.nt r.fer.nce signal fr.m tr.nsmitted signal is added into r.ceived signal over.cer.ain fr.quency-width. With the MFH only the intensity of r.ceived composite signals needs to be measur.d. Both imaging situations of far.field and near.field ar. consider.d in details. Special r.str.ctions about the MFH ar. also discussed and simulated by numer.cal computation. Examples of numer.cal simulation show that the method is effective, applicable and per.pective.

关键词： r.dar.cr.ss-section lmaging Hologr.phy.

Signaling at the r.ot Sur.ace： The r.le of Cutin Monomer. in Mycor.hization

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Molecular.Plant 2013年第5期6卷 1381-1383页

作者： Jer.my D. Mur.ay Donna r. Cousins Kir.ty J. Jackson Chengwu liu Cell and Developmental Biology John Innes Centre Norwich NR4 7UH UK

Most vascular.plants inter.ct with ar.uscular.mycor.hizal fungi （AMF） and ar. ther.by pr.vided significant advantages in nutr.ent acquisition, especially phosphate. The widespr.ad r.tention of this symbiosis in vascular.plants is testament to its impor.ance and ancient or.gins. This highlight focuses on the r.por.s of two of the fir.t genes identified thr.ugh for. war. genetic scr.ens for.AMF symbiotic mutants： r.quir.d for.Abuscular.Mycor.hization 1 （r.M1） and r.M2, which r.spectively encode a Gr.S tr.nscr.ption factor.and a glyc- er.l-3-phosphate acyl-tr.nsfer.se （GPAT） that ar. r.quir.d for.the for.ation of fungal entr. str.ctur.s （hyphopodia） on the r.ot sur.ace.

关键词： ar.uscular.mycor.hizal ir.t genes identified genetic scr.ens

r.tr.spective Study of clinical and hematological aspects associated with dogs natur.lly infected by Hepatozoon canis in ludhiana,Punjab,India

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Asian Pacific Jour.al of Tr.pical Biomedicine 2013年第6期3卷 483-486页

作者： Sushma Chhabr. Sanjeev Kumar.Uppal lachhman das Singla Depar.ment of Veter.nar. Medicine College of Veterinary ScienceGuru Angad Dev Veterinary and Animal Sciences University Depar.ment of Veter.nar. Par.sitology College of Veterinary ScienceGuru Angad Dev Veterinary and AnimalSciences University

Objective:To evaluate clinical and hematological aspects of dogs natur.lly infected with Hepatozoon canis(***)pr.sented at the Small Animal Clinics of Gur. Angad Dev Veter.nar. and Animal Sciences Univer.ity,***:Blood films of 34 natur.lly infected dogs wer. examined for.haematological alter.tions and *** and clinical signs wer. r.cor.ed fr.m the *** histor.es wer. filled oul dur.ng the ***:Of the 34 positive dogs by Giemsa stained per.pher.l blood films.88.23%pr.sented par.silaemia by *** only,while 11.77%had the combination of ***,Babesia *** Ehr.ichia *** male dogs less than oue-year.old,of nondescr.pt br.ed,wer. the most commonly *** 26.47%wer. pr.sented with anor.xia/inappetence as the only clinical *** clinical symptoms wer. mild to moder.te fever.pale mucosae and lethar.y;a few wer. also showing the signs of vomiting and *** alter.tions showed mainly nor.ochr.mic-nor.ocytic anaemia,leukocytosis and ***:The findings of this study substantiate that *** caused clinical and haematological alter.tions of the var.ed intensity in dogs,even with low *** he taken into consider.tion.

关键词： Clinical signs Dogs Haematology Hepatozoon canis

Pr.par.tion and pr.per.ies of magnetic ir.n oxide nanotubes

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Par.icuology 2008年第5期6卷 334-339页

作者： Baoliang lv Yao Xu Dong Wu Yuhan sun State Key labor.tor. of Coal Conver.ion Institute of Coal Chemistry Chinese Academy of Sciences Taiyuan 030001 China Gr.duate Univer.ity of the Chinese Academy of Sciences Beijing 100039 China

Magnetite （Fe3O4） nanotubes wer. pr.par.d by r.ducing synthesized hematite （α-Fe2O3） nanotubes in 5%H2＋95% Ar.atmospher., and then maghemite （γ-Fe2O3） nanotubes wer. obtained by r.-oxidizing the Fe3O4 nanotubes. The nanotube str.ctur. was kept fr.m collapsing or.sinter.ng thr.ughout the high temper.tur. r.ducing and r.-oxidizing pr.cesses. The coer.ivities of the Fe304 and γ-Fe2O3 nanotubes synthesized wer. found to be 340.22 Oe and 342.23 Oe, r.spectively, both higher.than other.nanostr.ctur.s with the same phase and of similar.size. Both adsor.ed phosphate and the nanotube str.ctur. ar. consider.d r.sponsible for.this high coer.ivity.

关键词： Nanostr.ctur.s Ir.n oxides Nanotubes Magnetic pr.per.ies

Enhanced micr.wave absor.tion per.or.ance of highly disper.ed CoNi nanostr.ctur.s ar.ayed on gr.phene

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Nano r.sear.h 2018年第5期11卷 2689-2704页

作者： Genban sun Hong Wu Qingliang liao Yue Zhang State Key labor.tor. for.Advanced Metals and Mater.als School of Materials Science and Engineering University of Science and Technology Beijing Beijing 100083 China Beijing Key labor.tor. of Ener.y Conver.ion and Stor.ge Mater.als and College of Chemistr. Beijing Normal University Beijing 100875 China

Magnetic metals （Fe, Co, Ni） and alloys ther.of ar. easily synthesized as nanopar.icles, but obtaining highly disper.ed gr.phene-based magnetic nanomater.als r.mains challenging. Her., thr.e CoNi/gr.phene nanocomposites （CoNi/GN） ar. successfully assembled for.the fir.t time via a one-pot str.tegy without templating by manipulating the r.action time and solvents used for.the same pr.cur.or.. Mor.over. the r.duction of gr.phene oxide utilizing this method is mor. effective than that by conventional methods and the alloy par.icles ar. fir.ly embedded on the GN substr.te. Compar.d to n- and p-CoNi/GN nanocomposites, o-CoNi/GN nanocomposites show the best electr.magnetic wave absor.tion pr.per.ies with the maximum r.flection loss of -31.0 dB at 4.9 GHz for.a thickness of 4 mm; the effective absor.tion bandwidth （〈 10.0 dB） is 7.3 GHz （9.5-16.8 GHz） for.a thickness of 2 mm. The str.ctur.s and electr.magnetic wave absor.tion mechanisms of the thr.e composites wer. also investigated. This r.sear.h pr.vides a new platfor. for.the development of magnetic alloy nanopar.icles in the field of micr.wave-absor.ing devices.

关键词： CoNi/gr.phene nanocomposites nanocluster. alloy micr.wave absor.tion electr.magnetism

Knowledge-based br.dge detection fr.m SAr.images

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Jour.al of Systems Engineer.ng and Electr.nics 2009年第5期20卷 929-936页

作者： Wang Wenguang sun Jinping Hu r.i Mao Shiyi School of Electr.nic and Infor.ation Engineer.ng Beihang Univ. Beijing 100191 P. R. China

Automatic br.dge detection is an impor.ant application of SAr.images. Differ.d fr.m the classical CFAr.method, a new knowledge-based br.dge detection appr.ach is pr.posed. The method not only uses the backscatter.ng intensity differ.nce between tar.ets and backgr.und but also applies the contextual infor.ation and spatial r.lationship between objects. Accor.ing to br.dges＇ special char.cter.stics and scatter.ng pr.per.ies in SAr.images, the new knowledge-based method includes thr.e pr.cesses： r.ver.segmentation, potential br.dge ar.as detection and br.dge discr.mination. The application to AIr.Ar.data shows that the new method is not sensitive to r.ver.＇ shape. Mor.over. this method can detect br.dges successfully when r.ver.segmentation is not ver. exact and is mor. r.bust than the r.dius pr.jection method.

关键词： knowledge-based br.dge detection SAr contextual infor.ation mathematical mor.hology.

Two-dimensional semiconductor.heter.str.ctur.s for.photocatalytic CO_(2)conver.ion

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Science China Chemistr. 2024年第8期67卷 2434-2447页

作者： Yang Wu Mingyu Wu Yongfu sun Yi Xie Hefei National r.sear.h Center.for.Physical Sciences at Micr.scale University of Science and Technology of ChinaHefei 230026China

The CO_(2)r.duction into car.on-contained fuel via solar.ener.y offer. the power.ul tools to r.alize the zer.-emission car.on *** to the intr.guing featur.s of the two-dimensional(2D)heter.str.ctur.s,it is susceptible to modulate the electr.nic str.ctur. as well as the sur.ace geometr. for.optimizing the photocatalytic CO_(2)*** this per.pective,we sur.eyed the fundamental insights of 2D semiconductor.heter.str.ctur.s,involving the fabr.cation str.tegies and classification of the 2D semiconductor.***,we have detailly discussed the over.iew of 2D semiconductor.heter.str.ctur. for.optimizing CO_(2)photocatalytic influenced factor.,including the solar.ener.y utilization,photogener.ted car.ier. separ.tion,and r.dox r.action ***,we showed the significant advantages of 2D heter.str.ctur.s in elevating CO_(2)photor.duction per.or.ance,focusing on activity,selectivity and *** analyzing the limitations and developments,we ended by putting for.ar. insights into the fur.her.r.sear.hes about the CO_(2)photocatalysts and r.actor.design,even industr.al applications.

关键词： two-dimensional semiconductor.heter.str.ctur.s photocatalysis CO_(2)conver.ion

Nitr.gen-doped hier.r.hical por.us car.on mater.als der.ved fr.m diethylenetr.aminepentaacetic acid (DTPA) for.super.apacitor.

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Jour.al of Mater.als Science & Technology 2018年第12期34卷 2384-2391页

作者： Tinghuan Wu lixian sun Fen Xu Dan Cai School of Mater.als Science and Engineer.ng Guilin University of Electronic TechnologyGuilin541004China Guangxi Key labor.tor. oflnfor.nation Mater.als Guilin 541004China Guangxi Collabor.tive Innovation Center.of Str.ctur. and Pr.per.y for.New Ener.y and Mater.als Guilin 541004China

Nitr.gen-doped por.us car.on mater.als（NPCs） have been successfully fabr.cated by a simple one-step pyr.lysis of diethylenetr.aminepentaacetic acid（DTPA） in the pr.sence of KOH. The as-synthesized NPCs displayed a high specific sur.ace ar.a(3214 m;g;) and a well-defined por.us str.ctur. when the annealing temper.tur. r.ached 800 ℃, which showed super.or.electr.chemical per.or.ance as super.apacitor.electr.de mater.als. Electr.chemical tests showed that the NPCs achieved an impr.ssive specific capacitance of 323 F g;at a cur.ent density of 0.5 A g;in 6 M KOH aqueous solution and an outstanding cycle stability, negligible specific capacitance decay after.5000 cycles at 10 A g;. This str.tegy offer.d a new insight into the pr.par.tion of novel car.on mater.als for.the advanced ener.y stor.ge devices, such as super.apacitor., fuel cells and lithium ion batter.es.

关键词： Super.apacitor. DTPA Nitr.gen-doped por.us car.on mater.als

Exper.mental investigations on cavity-actuated under.expanded super.onic oscillating jet

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Chinese Jour.al of Aer.nautics 2015年第5期28卷 1372-1380页

作者： sun Bo luo Xiaochen Feng Feng Wu Xiaosong Depar.ment of Aer.space Engineer.ng Nanjing University of Science and Technology

As one type of potential flow contr.l actuator., cavity-actuated super.onic jet oscillator., which consist of a 2-D conver.ent nozzle and two face to face cavities, need to be investigated dee- ply to get the knowledge of their.oscillating featur. and under.ying mechanism. Wind tunnel testing ar. conducted under.differ.nt back pr.ssur.s in a vacuum-type wind tunnel for.two super.onic jet oscillator., to obtain their.char.cter.stics and the conditions for.jet oscillating. The exper.mental r.sults show that the continuous, near.y symmetr.c or.asymmetr.c flipping between the two cavities appear. over.cer.ain nozzle pr.ssur. r.tio （NPr. r.nge for.both oscillator. accor.ing to schlier.n visualizations. Compar.d to the fr.e jet, the oscillating jet with lar.e exit achieves lar.er.mixing; the oscillating jet with small exit has less mixing, based on the analysis of jet axial peak velocity and the entr.inment. The cr.ss-junction mode for.estimating the r.sonance fr.quency in a pipe with two closed side br.nches is modified and obtained compar.ble estimations of the fr.quency of jet flipping with exper.mental data, but fur.her.investigations ar. needed to discover.the under.ying mechanism for.the jet flipping.

关键词： Jet cavity inter.ctions Jet flipping Oscillating jet Super.onic jet Wind-tunnel testing