The role of torsional isomers of planarly chiral nonbridged bis(indenyl)metal type complexes in stereoselective propene polymerization

1993 ◽  
Vol 115 (11) ◽  
pp. 4590-4601 ◽  
Author(s):  
Gerhard Erker ◽  
Michael Aulbach ◽  
Markus Knickmeier ◽  
Doris Wingbermuehle ◽  
Carl Krueger ◽  
...  
Keyword(s):  
Metal Type ◽  
Propene Polymerization ◽  
Torsional Isomers

Preparation and Characterization of BaTiO3 Thin Films on MgO-buffered Si(100) Substrates by RF Sputtering

1997 ◽  
Vol 12 (4) ◽  
pp. 1152-1159 ◽  
Author(s):  
Sangsub Kim ◽  
Shunichi Hishita
Keyword(s):  
Thin Films ◽  
Buffer Layer ◽  
Large Scale ◽  
Rf Sputtering ◽  
Morphological Characteristics ◽  
Electrical Measurements ◽  
Metal Type ◽  
Metal Insulator Metal

We report the results of a study on the deposition and characterization of partially oriented BaTiO3 thin films on MgO-buffered Si(100) by radio-frequency magnetron sputtering. The structural and morphological characteristics of the MgO buffer layer were investigated as a function of substrate temperature. The x-ray θ-2θ, φ scans, and observation of surface morphology revealed that MgO grew with a tendency of (001) orientation. Partially (00l) or (h00) textured BaTiO3 thin films were obtained on Si(100) with the MgO buffer layer while randomly oriented BaTiO3 thin films with large-scale cracks on the surface were made without the MgO layer. Pt/BaTiO3/Pt multistructures were formed on Si(100), MgO/Si(100), and MgO(100) single crystal substrates to conduct preliminary electrical measurements for metal-insulator-metal type capacitor. Comparison of the crystallographic orientation, morphology, and electrical properties between the BaTiO3 films on Si(100) with and without the MgO buffer layer supported the favorable role of the MgO layer as a buffer for the growth of BaTiO3 films on Si(100).

scholarly journals The role of dormant sites in propene polymerization using methylalumoxane activated metallocene catalysts

1995 ◽  
Vol 97 (1) ◽  
pp. 205-216 ◽  
Author(s):  
Stephan Jüngling ◽  
Rolf Mülhaupt ◽  
Udo Stehling ◽  
Hans-Herbert Brintzinger ◽  
David Fischer ◽  
...  
Keyword(s):  
Metallocene Catalysts ◽  
Propene Polymerization

scholarly journals The Chikchi and Its Positions in Fourteenth-Century Korea

Religions ◽  
2020 ◽  
Vol 11 (3) ◽  
pp. 126
Author(s):  
Jongmyung Kim
Keyword(s):  
World History ◽  
Rare Book ◽  
Modern Times ◽  
Cultural Organization ◽  
Korean Buddhism ◽  
Metal Type ◽  
The World ◽  
History Of ◽  
World List

The purpose of this paper is to examine the historical and ideological positions of the Chikchi, a Korean Zen text. Originally composed of two fascicles, the book was published with metal type in 1377 and in woodblock print in 1378. The metal type print only remains. in its second fascicle, which is currently preserved in the La Bibliotheque nationale de France, registered in the Memory of the World by the United Nations, Educational, Scientific and Cultural Organization (UNESCO) Memory of the World list. However, the woodblock print remains in two fascicles, including the teachings of Buddhas, recorded sayings, enlightened verses, and transmission records of more than one hundred patriarchs and masters of India, China, and Korea. The role of the Chikchi shines more in modern times. As a rare book in Korea and as the oldest extant book printed with metal type in the world, it has a great significance in the world history of printing culture. The Chikchi also has originality in terms of soteriology, ideological flexibility, an open interpretation of Buddhist teachings, and an integration with Confucianism, thus suggesting its possible contribution to a better understanding of the characteristics of Korean Buddhism in particular and, by extension, East Asian Buddhism in general.

scholarly journals The cation diffusion facilitator protein MamM’s cytoplasmic domain exhibits metal-type dependent binding modes and discriminates against Mn2+

2020 ◽  
Author(s):  
Shiran Barber-Zucker ◽  
Jenny Hall ◽  
Afonso Froes ◽  
Sofiya Kolusheva ◽  
Fraser MacMillan ◽  
...  
Keyword(s):  
Direct Evidence ◽  
Transmembrane Domain ◽  
Crystal Form ◽  
Binding Modes ◽  
Cation Diffusion ◽  
Cation Diffusion Facilitator ◽  
Metal Type ◽  
Metal Selectivity ◽  
Specific Metal

SummaryCation diffusion facilitator (CDF) proteins are a conserved family of divalent transition metal cation transporters. CDF proteins are usually composed of two domains: the transmembrane domain (TMD), in which the metal cations are transported through, and a regulatory cytoplasmic C-terminal domain (CTD). Each CDF protein transports either one specific metal, or multiple metals, from the cytoplasm. Here, the model CDF protein MamM, from magnetotactic bacteria, was used to probe the role of the CTD in metal selectivity. Using a combination of biophysical and structural approaches, the binding of different metals to MamM CTD was characterized. Results reveal that different metals bind distinctively to MamM CTD in terms of; their binding sites, thermodynamics and binding-dependent conformation, both in crystal form and in solution. Furthermore, the results indicate that the CTD discriminates against Mn2+ and provides the first direct evidence that CDF CTD’s play a role in metal selectivity.

Role of metal type on mesoporous KIT-6 for hydrogen storage

2018 ◽  
Vol 43 (22) ◽  
pp. 10376-10385 ◽  
Author(s):  
Rupak Kishor ◽  
Sohan Bir Singh ◽  
Aloke Kumar Ghoshal
Keyword(s):  
Hydrogen Storage ◽  
Metal Type

scholarly journals Simulation based approach to structure relaxation in oxides nanomaterials

2014 ◽  
Vol 70 (a1) ◽  
pp. C747-C747
Author(s):  
Alexei Kuzmin ◽  
Andris Anspoks ◽  
Aleksandr Kalinko ◽  
Janis Timoshenko
Keyword(s):  
Simulation Methods ◽  
Correlation Effects ◽  
Nickel Oxide Nanoparticles ◽  
X Ray ◽  
Structure Relaxation ◽  
Metal Type ◽  
Simulation Based ◽  
Thermal Disorder ◽  
X Ray Absorption

Physical properties of nanoparticles depend strongly on their structure, therefore an understanding of atomic structure relaxation at nanoscale is very important for properties tuning but is a challenging task. Upon crystallite size reduction below about 10 nm, the unit-cell volume expansion is observed in most nanooxides, opposite to metal nanoparticles. The detailed understanding of this phenomenon requires joint use of modern experimental and theoretical methods. In this study we will illustrate how the nanostructure problem can be addressed using classical molecular dynamics [1] and reverse Monte Carlo [2] simulation methods, employed to the analysis of synchrotron radiation x-ray absorption spectra. The two simulation based approaches allow us to obtain structural models which account for the nanoparticle size, thermal disorder and high-order correlation effects. Two examples of their use will be discussed in details: (i) the role of nickel vacancies in nickel oxide nanoparticles/thin films and (ii) the effect of transition metal type on tungstate nanoparticles.

Role of dactinomycin in the improved survival of children with Wilms' tumor

JAMA ◽  
1966 ◽  
Vol 195 (12) ◽  
pp. 1005-1009 ◽  
Author(s):  
D. J. Fernbach
Keyword(s):  
Wilms Tumor

Role of the allergist in diagnosis and management of patients with uveitis

JAMA ◽  
1966 ◽  
Vol 195 (3) ◽  
pp. 167-172 ◽  
Author(s):  
T. E. Van Metre
Keyword(s):  
Diagnosis And Management
Sign in / Sign up

Export Citation Format

Share Document