In this paper, a new representational model is introduced for the rational family of ruled surfaces in Computer Graphics. The surface parameterization is constructed using the NURBS basis functions and line geometry. The ruled surface is defined by interpolating directly dual unit vectors representing lines, which is a single parametric surface and its shape depends on the control lines. All th...

At the beginning of this study, a new ruled surface was created using modified frame. Then, distribution parameter surface, striction line, normal vector field were calculated and differential geometric properties examined. In last part examples related to are given.

\ comparative study by White, White, and Mider (8) of the effect of a restriction of cystine, lysine, and tryptophane in the diet of dba mice showed that the development of methylcholanthrene-induced leukemia was inhibited by a re striction in cystine but was unaffected by a re striction in the essential amino acids, lysine, and tryptophane. A previous study by White and Andervont (7) showed th...

Nowadays adaptive optics (AO) is a very powerful technique for several scientific and technological applications, and with important economical perspectives. In the last decade, AO technology has fostered new solutions to improve adaptive components performance. While the scientific line has grown up quickly, AO has not experienced yet a wide spread commercial diffusion because a reasonable tra...

Magnetic rare earths R have been proven to have a significant effect on the multiferroic properties of the orthorhombic manganites RMnO3. A re-examination of previous results from synchrotron based x-ray scattering experiments suggests that symmetric exchange striction between neighboring R and Mn ions may account for the enhancement of the ferroelectric polarization in DyMnO3 as well as the ma...

One of the major breakthroughs associated with multiferroicity in recent years is the discovery of ferroelectricity generated by specific magnetic structures in some magnetic insulating oxides such as rare-earth manganites RMnO3 and RMn2O5. An unresolved issue is the small electric polarization. Relatively large electric polarization and strong magnetoelectric coupling have been found in those ...

Keywords: cortical necrosis; rim sign; exercise; vasocon-globin of 14.2 g/dl. PT and PTT were 12 and 35 s respectively. Urinalysis revealed 10 RBC/HPF. striction; renal failure Fractional excretion of sodium was 2.3%. Initial serum biochemistry results were urea 5.16 mmol/l, creatinine 124 mmol/l, creatinine phosphokinase of 150 IU/l,