scholarly journals MODELING OF A NANOCYLINDER

2021 ◽  
Vol 20 (1) ◽  
pp. 44-55
Author(s):  
Serghei A. Baranov ◽  
Keyword(s):  
Special Form ◽  
Interfacial Layer ◽  
Anisotropy Energy ◽  
Tolman Length

The results of the theory of modeling for obtaining nanocylinders have been described. A case of a nanocylinder whose diameters are shorter than the Tolman length has been considered. This important issue is taken into account in studying a nanocylinder for which, in the simplest model, the thickness of the interfacial layer cannot be determined because it supposedly has a small size. At the same time, it has been shown that the introduction of a special form of anisotropy energy makes it possible to analytically describe the origin of an interfacial layer whose sizes can be regarded as sizes comparable to the Tolman length.

Anisotropy energy of spin glasses at T < Tg studied by transverse susceptibility

1982 ◽  
Vol 43 (4) ◽  
pp. 691-703 ◽  
Author(s):  
F. Hippert ◽  
H. Alloul
Keyword(s):  
Spin Glasses ◽  
Anisotropy Energy

Ethnic Confessional Specificity of Religiousness in Ukraine

1999 ◽  
pp. 94-105
Author(s):  
Oleksandr N. Sagan
Keyword(s):  
Ethnic Identity ◽  
Special Form

In interpreting the concept of ethnoconfessional specificity of culture, we first of all mean that this is a special form of culture of ethnically related groups of people who have their own special, religiously decorated lifestyle and ethnic identity of which is denominational oriented. This ethno-confessional community acquires, in certain socio-historical conditions, the function of a ethnic representative

Experimental methods for constructing MDS matrices of a special form

2018 ◽  
Vol 26 (2) ◽  
pp. 115-128
Author(s):  
M. I. Rozhkov ◽  
S. S. Malakhov
Keyword(s):  
Special Form ◽  
Experimental Methods

Transient left ventricular dysfunction: special form of stress cardiomyopathy

2008 ◽  
Vol 149 (8) ◽  
pp. 347-352 ◽  
Author(s):  
János Tomcsányi ◽  
Miklós Somlói ◽  
Tamás Frész ◽  
Hrisula Arabadzisz ◽  
Emil Toldy-Schedel ◽  
...  
Keyword(s):  
Left Ventricular Dysfunction ◽  
Special Form ◽  
Ventricular Dysfunction ◽  
Left Ventricular ◽  
Stress Cardiomyopathy

A súlyos stressz hatására bekövetkező bal kamrai diszfunkció régóta ismert jelenség. Ennek a bal kamra apicalis dilatatiójával járó reverzíbilis formáját Sato és munkatársai 1990-ben történt első leírása nyomán „tako-tsubo”-cardiomyopathiának vagy ampulla-cardiomyopathiának hívják. Az erről szóló publikációkban mind a japán, mind az angolszász irodalomban szinte egyenlőségjelet tesznek a stressz-cardiomyopathia és a tako-tsubo-cardiomyopthia közé. Célkitűzés: A stressz indukálta reverzíbilis balkamra-diszfunkciós betegeink adatainak feldolgozásával tisztázni e kórkép lehetséges klinikai formáit és legjellemzőbb klinikai paramétereiket. Módszer: a 2002 és 2007 közötti, a Budai Irgalmasrendi Kórházban kezelt olyan betegek adatainak retrospektív feldolgozása, akiknél kimutatható volt a reverzíbilis balkamra-diszfunkció, és a koronarográfia negatív eredményt adott, valamint a klinikum és a laborparaméterek nem utaltak myocarditisre. Eredmények: Az elmúlt öt és fél évben összesen 6 olyan esetet találtunk, amelyek megfeleltek a fent leírt kritériumoknak. A betegek 55–80 év közötti nők voltak, akiknél öt esetben volt kimutatható oki tényezője a reverzíbilis balkamra-diszfunkciónak. Következtetések: A stressz indukálta cardiomyopathiának csak egyik formája a bal kamra csúcsi dilatációja, és ennek a csoportnak a fő közös jellemzője nem a tako-tsubo-szerű balkamra-tágulat, amely nincsen mindig jelen, hanem a szinte mindig meglévő QT-megnyúlás és negatív T-hullámok, amelyek a coronariabetegség nélküli akut, reverzíbilis balkamra-diszfunkciót néhány nappal követik megfigyeléseink és az irodalmi adatok alapján.

Scalability of MOCVD-deposited Hafnium Oxide

2003 ◽  
Vol 765 ◽  
Author(s):  
S. Van Elshocht ◽  
R. Carter ◽  
M. Caymax ◽  
M. Claes ◽  
T. Conard ◽  
...  
Keyword(s):  
Hafnium Oxide ◽  
Interfacial Layer ◽  
Gate Dielectric ◽  
Deposition Process ◽  
Oxide Thickness ◽  
Process Conditions ◽  
Primary Concern ◽  
Gate Electrode ◽  
K Value ◽  
High K

AbstractBecause of aggressive downscaling to increase transistor performance, the physical thickness of the SiO2 gate dielectric is rapidly approaching the limit where it will only consist of a few atomic layers. As a consequence, this will result in very high leakage currents due to direct tunneling. To allow further scaling, materials with a k-value higher than SiO2 (“high-k materials”) are explored, such that the thickness of the dielectric can be increased without degrading performance.Based on our experimental results, we discuss the potential of MOCVD-deposited HfO2 to scale to (sub)-1-nm EOTs (Equivalent Oxide Thickness). A primary concern is the interfacial layer that is formed between the Si and the HfO2, during the MOCVD deposition process, for both H-passivated and SiO2-like starting surfaces. This interfacial layer will, because of its lower k-value, significantly contribute to the EOT and reduce the benefit of the high-k material. In addition, we have experienced serious issues integrating HfO2 with a polySi gate electrode at the top interface depending on the process conditions of polySi deposition and activation anneal used. Furthermore, we have determined, based on a thickness series, the k-value for HfO2 deposited at various temperatures and found that the k-value of the HfO2 depends upon the gate electrode deposited on top (polySi or TiN).Based on our observations, the combination of MOCVD HfO2 with a polySi gate electrode will not be able to scale below the 1-nm EOT marker. The use of a metal gate however, does show promise to scale down to very low EOT values.

Effects of Aging on the Morphology of Rubber-Brass Interfacial Layer

2011 ◽  
Vol 39 (1) ◽  
pp. 20-43 ◽  
Author(s):  
A. Ashirgade ◽  
P. B. Harakuni ◽  
W. J. Vanooij
Keyword(s):  
Chemical Composition ◽  
Interfacial Layer ◽  
Secondary Ion Mass Spectrometry ◽  
Morphological Changes ◽  
Grazing Incidence ◽  
Complex Nature ◽  
Rubber Compound ◽  
Tire Cord ◽  
Morphological Transformation ◽  
Adhesion Promoter

Abstract Adhesion between rubber compound and brass-plated steel tire cord is crucial in governing the overall performance of tires. The rubber-brass interfacial adhesion is influenced by the chemical composition and thickness of the interfacial layer. It has been shown that the interfacial layer consists mainly of sulfides and oxides of copper and zinc. This paper discusses the effect of changes in the chemical composition and the structure of the interfacial layers due to addition of adhesion promoter resins. Grazing incidence x-ray diffraction (GIXRD) experiments were run on sulfidized polished brass coupons previously bonded to five experimental rubber compounds. It was confirmed that heat and humidity conditions lead to physical and chemical changes of the rubber-steel tire cord interfacial layer, closely related to the degree of rubber-brass adhesion. Morphological transformation of the interfacial layer led to loss of adhesion after aging. The adhesion promoter resins inhibit unfavorable morphological changes in the interfacial layer, thus stabilizing it during aging and prolonging failure. Tire cord adhesion tests illustrated that the one-component resins improved adhesion after aging using a rubber compound with lower cobalt loading. Based on the acquired diffraction profiles, these resins were also found to impede crystallization of the sulfide layer after aging, leading to improved adhesion. Secondary ion mass spectrometry depth profiles and scanning electron microscopy micrographs strongly corroborated the findings from GIXRD. This interfacial analysis adds valuable information to our understanding of the complex nature of the rubber-brass bonding mechanism.

Oxidation Ditch

2018 ◽  
Author(s):  
Gede H Cahyana
Keyword(s):  
Activated Sludge ◽  
Special Form ◽  
Oxidation Ditch ◽  
End Point ◽  
Activated Sludge System

As a part of activated sludge system, oxidation ditch has a special form like a canal without end point. Rotor is used to diffuse oxygen from air to the water.

Sign in / Sign up

Export Citation Format

Share Document