نتایج جستجو برای: ansa titanocene dichloride

تعداد نتایج: 2776  

Journal: :Journal of Organometallic Chemistry 1991

2014
Neeta Pandit-Taskar Steven M. Larson Jorge A. Carrasquillo

Learning Objectives: On successful completion of this activity, participants should be able to (1) define the advantages and disadvantages of the use of a-emitting radionuclide 223Ra-dichloride in the treatment of painful metastatic osseous metastasis; (2) recognize the indications and contraindications and define the prerequisites for administration of 223Ra-dichloride; and (3) apply and integ...

1994
Nigel Edwards

The basic technology for open distributed processing is now understood. The challenge now is to be able to deliver appropriate non-functional guarantees (e.g. reliability, availability and performance), and to be able to integrate existing services and systems into this world of open dependable distributed computing. It is important to realize that there will not be one set of nonfunctional gua...

2011
O Okonkwo J Doshi S Minhas

Schwannomas are rare neoplasms that originate from Schwann cells. We present a case report of schwannoma of the ansa cervicalis in a patient where preoperative imaging suggested thyroid pathology. A 25-year-old man presented to the otolaryngology department with a one-year history of an asymptomatic, anterior triangle neck swelling. Imaging and FNA suggested a cystic lesion of the thyroid. Howe...

2008
John P. Wisniewski Mark Clampin Carol A. Grady David R. Ardila Holland C. Ford David A. Golimowski Garth D. Illingworth John E. Krist

We present the first multi-color view of the scattered light disk of the Herbig Ae star HD 163296, based on coronagraphic observations from the Hubble Space Telescope Advanced Camera for Surveys (ACS). Radial profile fits of the surface brightness along the disk’s semi-major axis indicates that the disk is not continuously flared, and extends to ∼540 AU. The disk’s color (V-I)=1.1 at a radial d...

2008
P Pérez

We described the macroscopic anatomy of the intestines and their peritoneal folds of five adult pampas deer (Ozotoceros bezoarticus), a cervid species considered to ingest a high proportion of grass in its natural diet. The mean (±SD) body weight was 17 (±2) kg. The small intestine and the caecocolon measured 495 (±37) cm and 237 (±24) cm in length, respectively, with an average ratio (small in...

Journal: :Circulation research 1990
M R Warner M N Levy

Neuropeptide Y and norepinephrine are localized in sympathetic nerve terminals throughout the heart. We sought to determine the functional distribution of the neuropeptide Y-containing sympathetic fibers to the sinus and atrioventricular (AV) nodal regions. We recorded cycle length, AV interval, and arterial pressure in 14 anesthetized dogs. We assessed the release of neuropeptide Y from sympat...

Journal: :Chemical communications 2006
Shigeki Oishi Keisuke Hatano Akira Tsubouchi Takeshi Takeda

Titanocene(II)-promoted cross-coupling between (Z)-alkenyl methyl sulfones and terminal allenes produced 1,4-dienes regioselectively via the formation of 2-alkylidenetitanacyclopentanes. Preferential formation of E,Z-dienes was observed in the reaction using aryl-, amino-, and phosphinylallenes.

2012
M. Wannaborworn B. Jongsomjit

Copolymerization of ethylene with 1-hexene was carried out using two ansa-fluorenyl titanium derivative complexes. The substituent effect on the catalytic activity, monomer reactivity ratio and polymer property was investigated. It was found that the presence of t-Bu groups on fluorenyl ring exhibited remarkable catalytic activity and produced polymer with high molecular weight. However, these ...

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