نتایج جستجو برای: partially buried structure
تعداد نتایج: 1683411 فیلتر نتایج به سال:
Charge transport processes at interfaces which are governed by complex interfacial electronic structure play a crucial role in catalytic reactions, energy storage, photovoltaics, and many biological processes. Here, the first soft X-ray second harmonic generation (SXR-SHG) spectrum of buried interface (boron/Parylene-N) is reported. SXR-SHG shows distinct spectral features that not observed abs...
The Mars Exploration Rover Spirit has traversed a fairly flat, rock-strewn terrain whose surface is shaped primarily by impact events, although some of the landscape has been altered by eolian processes. Impacts ejected basaltic rocks that probably were part of locally formed lava flows from at least 10 meters depth. Some rocks have been textured and/or partially buried by windblown sediments l...
Superior broadband antireflection from buried Mie resonator arrays for high-efficiency photovoltaics
Establishing reliable and efficient antireflection structures is of crucial importance for realizing high-performance optoelectronic devices such as solar cells. In this study, we provide a design guideline for buried Mie resonator arrays, which is composed of silicon nanostructures atop a silicon substrate and buried by a dielectric film, to attain a superior antireflection effect over a broad...
A theoretical model for the I-V characteristics of buried-gate GaAs metal semiconductor field-effect transistors has been developed by solving dc continuity equation. This analysis includes the ion implanted buried-gate process. It is shown that the currentvoltage could be rather increased when introducing an optical fiber to the buried-gate GaAs MESFETs structure. The current -voltage characte...
This paper presents an efficient approach for the modal analysis of coupled soil-structure systems, which dynamic response is strongly influenced by embedment in soil. The methodology based on a finite element-perfectly matched layer model that allows derivation frequency-independent system matrices and computation properties system. achieved solving nonlinear eigenproblem using Compact Rationa...
The regeneration of plant communities from seed depends, to a large extent, on the capacity of the seed remaining viable in the soil. The viability and germination of artificially buried Psychotria vellosiana seeds in cerrado soil were studied, with the purpose of discovering some physio-ecological aspects of dispersed seeds and evaluating their potential to constitute a soil seed bank. Seed sa...
To prepare PEGylated recombinant human granulocyte colony-stimulating factor (rHuG-CSF) with enhanced pharmacokinetic properties, we prepared a cysteine-substituted mutant of rHuG-CSF (mrHuG-CSF). For site-specific PEGylation of mrHuG-CSF, Threonine 134 residue that is one of the glycosylation sites and thought not to be critical in structure and function of rHuG-CSF was substituted by Cysteine...
Most interactive segmentation methods are defined at a 2-d level requiring sometimes extensive interaction when the object of interest is difficult to be outlined by simple means of segmentation. This may become tedious if the data happens to be a 3-d scene of which a part of the differentiating features of a structure is buried in 3-d contextual information. We propose a concept of extending i...
of buried objects. It is designed to detect, locate and retrieve buried objects. The system is equipped with a hydraulic robot, laser range finder and a subsurface sensor. First, subsurface sensing is used to detect and locate buried objects. If an object can be reached with one dig, the excavator retrieves it directly. Otherwise a layer of soil above the object is removed and another subsurfac...
We fabricated horizontal Si slot waveguides with a 25 nm SiO2 slot layer by bonding thin Si-on-insulator wafers. After removing the Si substrate and buried oxide from one side of the bonded structure, grating-coupled waveguides and ring resonators were partially etched into the Si /SiO2 /Si device layers. The gratings exhibit efficiencies of up to 23% at 1550 nm and the ring resonators were mea...
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