Interface structure and its properties. Fundamentals of interface structure. 2. Hetero-interfaces.

the underlying structure of language proficiency and the proficiency level

هدف از انجام این تخقیق بررسی رابطه احتمالی بین سطح مهارت زبان خارجی (foreign language proficiency) و ساختار مهارت زبان خارجی بود. تعداد 314 زبان آموز مونث و مذکر که عمدتا دانشجویان رشته های زبان انگلیسی در سطوح کارشناسی و کارشناسی ارشد بودند در این تحقیق شرکت کردند. از لحاظ سطح مهارت زبان خارجی شرکت کنندگان بسیار با هم متفاوت بودند، (75 نفر سطح پیشرفته، 113 نفر سطح متوسط، 126 سطح مقدماتی). کلا ...

Information Structure, Phrase Structure, and Their Interface

Interface vibrational modes and interface structure of CdSe/ZnTe superlattices

Interfacial vibrational modes ~IFM’s! of CdSe/ZnTe superlattice are shown for perfect and atomically rearranged interfaces with four probable exchange configurations. In addition to the IFM at 222 cm originating from single interface Zn-Se ‘‘wrong’’ bonds ~WB’s!, another IFM at 235 cm occurs due to atomic rearrangement at the interfaces, which is attributed to double Zn-Se WB’s. Raman scatterin...

Structure and Chromotropic Properties of 2-Picolylamine-Ni(II) Complex

A symmetric complex [NiL2(H2O)2]Cl2, where L = 2-picolylamine was synthesized and characterized by spectroscopic and structural methods. Single crystal X-ray studies reveal that the Ni(II) center located in a pseudo-octahedral N4O2 environment with bidentate ligands L positioned in basal and two water molecules in the apical position. The complex is solvatochromic, ionochromic and thermochromic...

Interface Structure and Surface Polarity in CdTe/ZnTe/(112)Si Hetero-Epitaxial System

Tellurium adsorption on clean (112) Si surfaces obey a second order kinetic law. The adsorbed Te ad-atoms are highly immobile. Activation energies of adsorption and desorption were measured by isothermal desorption rates. A surface bond energy model was used to calculate the total energy for Te chemisorption on (111) terraces. This model yields a Si-Te bond energy of about 3.46 eV. As-Te bond e...