نتایج جستجو برای: ni ti files

تعداد نتایج: 113807  

2013
Gul Tosun

In this study, the powders of Ni and Ti with 50.5 at.% Ni for 12 h were blended and cold pressed at the different pressures (50, 75 and100 MPa).The porous product obtained after Ni-Ti compacts were synthesized by SHS (self-propagating hightemperature synthesis) in the different preheating temperatures (200, 250 and 300oC) and heating rates (30, 60 and 90oC/min). The effects of the pressure, pre...

2004
F. Alkan C. Izci

The aim of this stu dy was to de ter mi ne the nor mal va lu es for the Schir mer tear test (STT) in Tur kish Hun ting Dogs. This was per for med in or der to fa ci li ta te the di ag no sis of xer ophthal mia or ke ra to con junc ti vi tis sic ca (KCS), which is cha rac te ri zed by de fi cien cies in tear pro duc ti on and the re sul ting ab nor mal STT. Fif teen Tur kish Hun ting Dogs (8 fe ...

ژورنال: مجله دندانپزشکی 2006
حسینی, فرزانه , شیخ‌رضایی, محمد سعید ,

Background and Aim: Many methods and techniques of canal preparation work well in large and relatively straight canals. However, in severely curved canals, the complexity increases markedly, and techniques rendering good results in usual cases may be unsuccessful. The aim of this study was to compare the effect of five root canal preparation techniques on original canal anatomy in simulated sev...

2001
Cecilia Kozma

The nucleosynthesis and production of radioactive elements in SN 1987A are reviewed. Different methods for estimating the masses of Ni, Ni, and Ti are discussed, and we conclude that broad band photometry in combination with timedependent models for the light curve gives the most reliable estimates.

Journal: :Journal of Pharmaceutical Negative Results 2022

Aim- The aim of this in-vitro study was to compare the effect NaOCl, EDTA, Propolis and Distilled water on cyclic fatigue resistance Protaper Gold rotary NiTi instruments.
 Method- A total 40 commercially available (n =40) Ni-Ti files were used assess different root canal irrigants their resistance. divided into four groups (n=10 per group) as Group 1- (Control group), 2 – 5.25 % 3 -17% ED...

ژورنال: :مجله صوت و ارتعاش 2014
اسماعیل گنجه حمید خرسند

آلیاژ ti-6al-4v در یک کورة اتمسفر کنترل توسط آلیاژ پرکنندة آمورف 1228 stemet با ترکیب شیمیـایی (ti-27zr-14cu-13ni, wt%) لحیم شد. ابتدا کیفیت اتصالات لحیم توسط آزمون اولتراسونیک و با استفاده از روش اندازه گیری ضخامت کراتکرامر برانسون[i] ارزیابی شد. سپس تأثیر زمان و دماهای مختلف بر ریزساختار و خواص مکانیکی بررسی شد. بررسی ریزساختار توسط میکروسکوپ نوری، میکروسکوپ الکترونی روبشی[ii] و بررسی خواص مک...

2009
Ryoji Hayashi Samuel M. Allen Linn W. Hobbs John F. Elliott

Magnetic Shape-Memory (MSM) materials are a new category of actuator materials with the potential to produce both large actuator strain and rapid response. To explore the possibility of developing MSM materials based on Fe-Ni-Co-Ti alloys, the effects of chemical composition (Co/Ni ratio) and ausaging on microstructure and magnetic shapememory response were studied. A suitable choice of chemica...

2004
K. D. Machado J. C. de Lima C. E. M. Campos T. A. Grandi

the date of receipt and acceptance should be inserted later Abstract. We have investigated the local atomic structure of amorphous TM-Ti alloys (TM = Co, Ni, Cu) produced by Mechanical Alloying by means of EXAFS analyses on TM and Ti K-edges. Coordination numbers and interatomic distances for the four alloys where found and compared. EXAFS results obtained indicated a shortening in the unlike p...

2006
Carl de Boor

as a function of s at the k+ 1 points ti, . . . , ti+k. The elements of $k,t are called polynomial splines of order k with knot sequence t. Let τ := (τi) n 1 be a strictly increasing real sequence. As is shown in [12], there exists, for given f , exactly one s ∈ $k,t, such that s(τi) = f(τi), i = 1, . . . , n, if and only if Ni,k(τi) 6= 0, i = 1, . . . , n, i.e., if and only if ti < τi < ti+k, ...

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