Phonomicrosurgical resection of glottal papillomatosis

Controlled debulking has been the surgical approach to treat laryngeal papillomatosis for over a century despite dramatic improvements in surgical technology. It is commonplace to leave disease in the glottis at the end of the procedure (eg, in the anterior commissure) because of complications associated with attempted complete removal. This study examined the recurrence patterns of adult glottal papillomatosis after phonomicrosurgical microflap resection. Between 1990 and 1995, 22 patients underwent phonomicrosurgical resection of glottal papillomatosis. Six patients had not undergone previous microlaryngeal surgery and 16 patients had had prior procedures. All patients underwent resection of all visible papillomatosis, and this frequently required staged resections. The subepithelial infusion technique was used to facilitate the resection in most cases. No patient who underwent resection for primary disease had a recurrence. Ten of 16 (62%) patients who presented with recurrent disease did not have a recurrence after microflap resection. Follow up on all patients was at least 2 years. This preliminary report suggests that recently developed phonomicrosurgical microflap resection techniques can eradicate adult glottal papillomatosis in some cases, and that resection of papillomatosis appears to be preferable to conventional debulking and/or ablation techniques.     

THE WAVELET TRANSFORM OF PERIODIC FUNCTION AND NONSTATIONARY PERIODIC FUNCTION

Some properties of the wavelet transform of trigonometric function, periodic function and nonstationary periodic function have been investigated. The results show that the peak height and width in wavelet energy spectrum of a periodic function are in proportion to its period. At the same time, a new equation, which can truly reconstruct a trigonometric function with only one scale wavelet coefficient, is presented. The reconstructed wave shape of a periodic function with the equation is better than any term of its Fourier series. And the reconstructed wave shape of a class of nonstationary periodic function with this equation agrees well with the function.     

INVESTIGATION OF THE DYNAMIC BUCKLING OF DOUBLEWALLED CARBON NANOTUBE SUBJECTED TO AXIAL PERIODIC DISTURBING FORCES

IntroductionThediscoveryofthefirstcarbonnanotubes[1]hasattractedwideattentionandstimulatedextensivestudies[2 - 5 ].Thestudiesshowedthatthecarbonnanotubesexhibitsuperiormechanical,electronicandchemicalproperties.Onthemechanicalbehavior,thecarbonnanotubespossessexceptionallyhighstrength ,stiffnessandelasticmodulus.Theestimatemodulusofthecarbonnanotubemayreachashighas 1TPa.Itisthelargestofallknownmaterials.Thestrengthorstiffnessishigherthananyknownfiber[3].Thecarbonnanotubeareusedascompositemat…     

GLOBAL ASYMPTOTIC STABILITY CONDITIONS OF DELAYED NEURAL NETWORKS

1　IntroductionandProblemEductionRecently,thestudiesofthestabilityforcellularneuralnetworks (CNNs)anddelayedcellularneuralnetworks (DCNNs)haveattractedattentionsofresearchersandseveralimportantresultshavebeenobtained .MostpapersdealtwithcompletelystableCNNsandDCNNsthataresuitableforimageprocessingapplications.CNNshavebeenwidelyappliedtoimageprocessing ,toprocessmovingimages,onemustintroducedelaysinthesignalstransmittedamongthecells.Buttimedelaysmayleadtoanoscillationphenomenonand ,furt…     

GLOBAL ATTRACTIVITY FOR A CLASS OF NONLINEARDELAY DIFFERENCE EQUATIONS

ＩｎｔｒｏｄｕｃｔｉｏｎＣｏｎｓｉｄｅｒｔｈｅｇｌｏｂａｌａｔｔｒａｃｔｉｖｉｔｙｏｆｔｈｅｎｏｎｌｉｎｅａｒｄｅｌａｙｄｉｆｆｅｒｅｎｃｅｅｑｕａｔｉｏｎΔｘｎ+ａｎｘｎ+ｆ(ｎ ,∑0ｓ=-ｋ ｑｓ,ｎｘｓ+ｎ) =0　 (ｎ=0 ,1 ,2 ,… ) . ( 1 )ＴｈｅｉｎｉｔｉａｌｖａｌｕｅｏｆＥｑ .( 1 )ｉｓｘｓ =φｓ　 (ｓ=-ｋ ,-ｋ+ 1 ,… ,-1 ,0 ) . ( 2 )Ｉｎｔｈｅｓｅｑｕｅｌ,ｗｅａｌｗａｙｓｓｕｐｐｏｓｅｔｈａｔＤ1) ａｎ ｉｓａｎｏｎｎｅｇａｔｉｖｅｒｅａｌｓｅｑｕｅｎｃｅ ,0 ≤ａｎ <1ａｎｄｋｉｓａｐｏｓｉｔｉｖｅ…     

ELASTIC ANALYSIS OF ORTHOTROPIC PLANE PROBLEMS BY THE SPLINE FICTITIOUS BOUNDARY ELEMENT METHOD

ＩｎｔｒｏｄｕｃｔｉｏｎＩｎｔｈｅｃｏｎｖｅｎｔｉｏｎａｌｂｏｕｎｄａｒｙｅｌｅｍｅｎｔｍｅｔｈｏｄ (ＢＥＭ) ,ｓｉｎｇｕｌａｒｐｏｉｎｔｓａｒｅｄｉｓｔｒｉｂｕｔｅｄａｌｏｎｇｔｈｅｂｏｕｎｄａｒｙｏｆｔｈｅｄｏｍａｉｎｕｎｄｅｒｓｔｕｄｙ ,ｗｈｉｃｈｌｅａｄｓｔｏｓｉｎｇｕｌａｒｉｎｔｅｇｒａｌｅｑｕａｔｉｏｎｓｄｕｅｔｏｔｈｅｓｉｎｇｕｌａｒｉｔｙｏｆｆｕｎｄａｍｅｎｔａｌｓｏｌｕｔｉｏｎｓ .Ｔｈｅｒｅｆｏｒｅ ,ｓｉｎｇｕｌａｒｉｎｔｅｇｒａｔｉｏｎｍｕｓｔｂｅｈａｎｄｌｅｄｗｈｅｎｓｏｌ…     

THE STUDY ON A KIND OF CONTROL SYSTEM WITH NONLINEAR PARABOLIC DISTRIBUTED PARAMETERS

ＩｎｔｒｏｄｕｃｔｉｏｎＩｎｔｈｅａｃｔｉｖｉｔｉｅｓｓｕｃｈａｓｔｈｅａｅｒｏｓｐａｃｅｅｎｇｉｎｅｅｒｉｎｇｈｅａｔｐｒｏｔｅｃｔｉｏｎ[1,2 ],ｔｈｅｌａｒｇｅ＿ｓｃａｌｅｃｏｎｃｒｅｔｅｐｏｕｒｉｎｇ ,ｔｈｅｃｈｅｍｉｃａｌｐｒｏｄｕｃｔｉｏｎ ,ｔｈｅｐｏｗｄｅｒｍｅｔａｌｌｕｒｇｙａｎｄｔｈｅｆｉｒｅｓａｆｅｔｙｅｎｇｉｎｅｅｒｉｎｇ[3,4],ｔｈｅｒｅｉｓｏｎｅｋｉｎｄｏｆｎｏｎｌｉｎｅａｒｐａｒａｂｏｌｉｃｄｉｓｔｒｉｂｕｔｅｄｐａｒａｍｅｔｅｒｃｏｎｔｒｏｌｓｙｓｔｅｍｗｉｔｈｍｏｖｉ…     

Characteristics of heat transfer between particles and fluid in aggregative fluidized bed

Measurements are made on the heat-transfer coefficients between particles and fluid in the aggregative fluidized bed. In order to evaluate the heat-transfer coefficients, a proposed model takes into account of the variation of the particles-temperature and the fluid-temperature distributions throughout the bed is developped on the basis of an experimental investigation of the fluidizing behavior. The heat-transfer coefficients obtained by conforming the outlet-air temperature profile to be predicted with the one measured are found to be varied significantly depending on the static bed height, as well as particle diameter and fluid velocity.     

ON CAUCHY PROBLEMS FOR THE RLW EQUATION IN TWO SPACE DIMENSIONS

ＩｎｔｒｏｄｕｃｔｉｏｎＩｎｓｙｓｔｅｍｏｆｔｈｅｎｏｎｌｉｎｅａｒｄｉｓｐｅｒｓｉｖｅ ,ｔｈｅｐａｐｅｒｓ [1 ]ａｎｄ [2 ]ｈａｖｅｓｔｕｄｉｅｄｔｈｅｍｏｄｅｌｅｑｕａｔｉｏｎｏｆｓｉｍｐｌｅｗａｖｅｓｐｒｏｐａｇａｔｉｏｎｏｆｌｏｎｇｗａｖｅ ,ｕｔ+αｕｘ+ βｕｕｘ-γｕｘｘｔ=0　　ｘ∈Ｒ ,ｔ≥ 0ｉｓｃａｌｌｅｄｔｈｅＲＬＷｅｑｕａｔｉｏｎ .ＳＨＡＮＧ[3]ｏｂｔａｉｎｅｄｔｈｅｅｘａｃｔｓｏｌｉｔａｒｙｗａｖｅｓｏｌｕｔｉｏｎｓｏｆｔｈｅｔｗｏｄｉｍｅｎｓｉｏｎａｌＲＬＷｅｑｕａｔｉｏｎ .Ｉｎ…     

The loss of stability of laminar flow in open channel and the mechanism of sand ripple formation

ＩｎｔｒｏｄｕｃｔｉｏｎＤｕｒｉｎｇｔｈｅｔｉｍｅｏｆｂｅｄｓｕｒｆａｃｅｓｅｄｉｍｅｎｔｔｒａｎｓｐｏｒｔａｔｉｏｎ,ｓｅｄｉｍｅｎｔｐａｒｔｉｃｌｅｓｏｆｂｅｄｌｏａｄｍａｋｅｔｈｅｃｏｌｌｅｃｔｉｖｅｍｏｔｉｏｎｏｆｖａｒｉｏｕｓｄｉｆｆｅｒｅｎｔｆｏｒｍｓｏｎｔｈｅｒｉｖｅｒｂｅｄｓｕｒｆａｃｅ,ｔｈｕｓｔｈｅｆｏｒｍｏｆｂｅｄｓｕｒｆａｃｅｃｈａｎｇｅｓｃｏｎｓｔａｎｔｌｙ .Ｔｈｉｓｋｉｎｄｏｆｃｏｌｌｅｃｔｉｖｅｍｏｔｉｏｎｏｆｓｅｄｉｍｅｎｔｐａｒｔｉｃｌｅｓｏｎｔｈｅｂｅｄｓｕｒｆ…