نتایج جستجو برای: اکسید fe ti

تعداد نتایج: 121703  

2010
Paul J. Lavrakas

Me et th ho od ds s U Us se ed d t to o A As ss se es ss s t th he e E Ef ff fe ec ct ti iv ve en ne es ss s o of f A Ad dv ve er rt ti is si in ng g o on n t th he e I In nt te er rn ne et t

2006
Rico Packheiser Bernhard Walfort Heinrich Lang

Heterotetrametallic [{[Ti](μ-σ,π-C≡CSiMe3)2}Cu-bipy-C≡C-AuPh2PFc]PF6 (5) ([Ti] = (ηC5H4SiMe3)2Ti; Fc = (η-C5H4)(η-C5H5)Fe; bipy = 2,2`-bipyridine) is accessible by the consecutive reaction of FcPPh2-AuCl (1) with 5-ethynyl-2,2`-bipyridine (2) producing FcPPh2-AuC≡C-bipy (3) which further reacts with [{[Ti](μ-σ,π-C≡CSiMe3)2}Cu(N≡CMe)]PF6 (4) to give the title complex in which four different tran...

2012
Mehmet Karakus J. Derek Woollins Peter Lönnecke Evamarie Hey-Hawkins

The title compound, [Fe(2)Ti(C(5)H(5))(4))(C(10)H(8)O(2)P(2)S(4))]·3C(4)H(8)O, contains a central seven-membered TiO(2)P(2)S(2) ring with a very similar geometry compared to the derivative showing anisyl instead of ferrocenyl substituents, the Ti-O distance being marginally longer for the anisyl derivative. Two tetra-hydro-furan solvent mol-ecules are each disordered on a twofold axis.

2009
Debasis Poddar

Solid-state direct diffusion bonding of commercially pure Titanium (Cp-Ti) and precipitation hardening stainless steel (PHSS) has been carried out in the temperature range of 800°C to 1000°C with an interval of 50°C for 3.6 ks under 3.5 Mpa uniaxial load in (4 to 6)×10 Pa vacuum. The effects of temperatures have been investigated with reference to bond strength. The examination revealed that th...

Journal: :Chemistry Central Journal 2007
Nijhuma Kayal Nahar Singh

BACKGROUND This study aimed at measuring the quantities of Al, Ti and Fe in silica sand and allied materials employing a complexometric method in the same analyte and a stepwise indirect titration with EDTA. The method involves the complexation of Al, Ti and Fe with excess EDTA and the selective de-complexation of TiO-EDTA and Al-EDTA complexes with tartaric acid and NaF respectively. In additi...

2007
J. I. González Hernández R. Rebolo G. Israelian

Context. The chemical analysis of secondary stars of low mass X-ray binaries provides an opportunity to study the formation processes of compact objects, either black holes or neutron stars. Aims. Following the discovery of overabundances of α-elements in the Keck I/HIRES spectrum of the secondary star of Nova Scorpii 1994 (Israelian et al. 1999), we obtained VLT/UVES high-resolution spectrosco...

Journal: :Analytical and bioanalytical chemistry 2003
Tomás Grygar Janka Hradilová David Hradil Petr Bezdicka Snejana Bakardjieva

Sixteen samples of orange-red and yellow Fe-oxide earthy pigments mainly from bole grounds of Baroque paintings were studied by elemental and phase analysis and voltammetry. Fe, K, and Ti content were found to be suitable for further classification of those earthy pigments. According to the chemical and phase composition the yellow grounds were natural yellow ochres formed by intense chemical w...

Journal: :International endodontic journal 2008
S Necchi S Taschieri L Petrini F Migliavacca

AIM To develop an accurate finite element (FE) model for studying rotary endodontic instruments and to demonstrate the usefulness of the FE method in improving the knowledge of the mechanical behaviour of these instruments during root canal preparation. METHODOLOGY An accurate geometrical model of a Ni-Ti ProTaper F1 instrument was created. The interaction between the rotating instrument and ...

ژورنال: :تحقیقات آب و خاک ایران 2012
علیرضا راهب احمد حیدری

غرقاب و در نهایت شرایط احیاء یک خاک غیراشباع، مجموعه ای از تغییرات شیمیایی و الکتروشیمیایی ایجاد می کند. پتانسیل اکسید و احیاء یکی از مهمترین عوامل در تعیین مشخصات شیمیایی خاک غرقاب بوده و تاثیر زیادی بر قابلیت انحلال و رسوب کانی ها، میزان فعالیت و جذب عناصر غذایی دارد. منطقه مورد مطالعه با وسعتی حدود 10 هکتار در ایستگاه تحقیقات برنج کشور (غرب شهرستان تنکابن) واقع می باشد. تغییرات مورفولوژیکی، ...

Journal: :Physical review letters 2014
A Gade R V F Janssens D Weisshaar B A Brown E Lunderberg M Albers V M Bader T Baugher D Bazin J S Berryman C M Campbell M P Carpenter C J Chiara H L Crawford M Cromaz U Garg C R Hoffman F G Kondev C Langer T Lauritsen I Y Lee S M Lenzi J T Matta F Nowacki F Recchia K Sieja S R Stroberg J A Tostevin S J Williams K Wimmer S Zhu

Excited states in the neutron-rich N = 38, 36 nuclei (60)Ti and (58)Ti were populated in nucleon-removal reactions from (61)V projectiles at 90 MeV/nucleon. The γ-ray transitions from such states in these Ti isotopes were detected with the advanced γ-ray tracking array GRETINA and were corrected event by event for large Doppler shifts (v/c ∼ 0.4) using the γ-ray interaction points deduced from ...

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