OBJECTIVES Composite arterial grafting is a surgical technique for arterial myocardial revascularization, in which free arterial conduits are proximally anastomosed end-to-side to an intact internal thoracic artery (ITA). This report describes technical aspects and results of composite grafting using bilateral skeletonized ITAs. METHODS From April 1996 to February 1999, 1057 patients underwen...

background: primary hyperhidrosis (ph) refers to excessive sweating, beyond normal physiological levels, in specific sites of the body for unknown reasons. it is usually bilateral and is most prominent in the palms, axillae, feet, and face. ph prevalence is estimated to be 0%-6.1% in different populations. it usually begins in childhood and is more frequent in women. in 57% of cases, there is a...

Canonic real-valued fast Fourier transform (RFFT) has been proposed to reduce the arithmetic complexity by eliminating redundancies. In a canonic N-point RFFT, the number of signal values at each stage is canonic with respect to the number of signal values, i.e., N. The major advantage of the canonic RFFTs is that these require the least number of butterfly operations and only real datapaths wh...

In order to improve the efficiency of elliptic curve multiplication methods, extended and composite elliptic curve operations such as nP,mP+Q, where n>2and m?2, and repeated doublings were proposed. These operations have lower complexity, in terms of field operations, than that for classical methods. Moreover, they are supposed to replace the classical methods. In this paper, repeated doublings...

nasoohi n 1 hoorizad m1 torabzadeh tari n 2   1- assistant prof, department of operative dentistry, islamic azad university, dental branch, tehran,iran   2-dentist   corresponding author : nasoohi n: department, no 4, 10th neyestan ave, pasdaran, tehran   tel : 09125392175 email: [email protected]     background and aim: discoloration of dental composites is one of the major reasons of the...

composite pressure vessel cng made of epoxy – carbon material with nonmetal liner is 60% lighter than aluminum vessel under the same conditions. one of the important parameters in the pressure vessels design is their resistance against impact and prevention of explosion. in this paper, the effects of low velocity impact on composite pressure vessel are investigated using fe analysis. the vessel...

to evaluate the ultimate compressive strength of five composite resins after 1 hour, 24 hours, 7 days and 1 month. twenty four cylindrical 4 mm×8mm specimens of each commonly used composite resins in posterior region (nulite-f , z250 , p60, biscore, tetric ceram hb) were prepared. each group of composite resins were divided into four time groups of 1 h, 24 h, 7 days and 1 month. all of specimen...

BACKGROUND Treatments for severe blepharoptosis are well documented and include the most common operations for restoring upper eyelid ptosis, which are levator surgery and frontal muscle transfers; however, the choice of treatment is still controversial. There are different approaches to the restoration of upper eyelid ptosis, and the choice will be based on ptosis severity and the surgeon's sk...