Scanning tunneling microscopy (STM) has been proven to be an extremely powerful tool for studying the electronic structures of solid-state systems. The STM topographic images, assisted by other surface analysis techniques with chemical specifity, lead to the structural determination of clean and adsorbate-covered surfaces. For example, the first atomically resolved STM image in history confirme...

The store-based and perceptual-gestural accounts of verbal STM suggest that any impairment (e.g. by concurrent oral activity) of articulatory planning/production processes will also impair verbal STM. In contrast, the interference-based Feature Model argues that a concurrent oral activity is only disruptive for STM performance because it introduces irrelevant verbal item features, which interfe...

A scanning tunneling microscope (STM) equipped with a field ion microscope (FIM) which operates at room temperature has been constructed and operated successfully to obtain atomically resolved STM images with 100% reproducibility. This instrument, which we call the FI-STM, has been employed for the quantitative study of the Si(100) "2xn" phase.

We have studied the ~001! surface of a Fe3O4 single crystal using scanning tunneling microscopy ~STM!, low-energy electron diffraction ~LEED!, and Auger electron spectroscopy. A clean surface was obtained by a combination of Ar ion sputtering, in situ annealing in O2 atmosphere, and further annealing in ultra high vacuum conditions. A sharp (A23A2)R45° reconstruction was observed by LEED and ST...

Two-dimensional self-assembly of 1-octanol molecules on a graphite surface is investigated using scanning tunneling microscopy (STM) at the solid/liquid interface. STM images reveal that this molecule self-assembles into a compact hydrogen-bonded herringbone nanoarchitecture. Molecules are preferentially arranged in a head-to-head and tail-to-tail fashion. A Moiré pattern appears in the STM ima...

OBJECTIVE To evaluate whether mandibular setback surgery (MSS) for Class III patients would produce gradients of three-dimensional (3D) soft tissue changes in the vertical and transverse aspects. MATERIALS AND METHODS The samples consisted of 26 Class III patients treated with MSS using bilateral sagittal split ramus osteotomy. Lateral cephalograms and 3D facial scan images were taken before ...

BACKGROUND Clinical studies have shown that about two-thirds of patients with chronic pain suffer from short-term memory (STM) deficits and an effective drug for treatment of the neurological disorder is lacking at present. OBJECTIVE We tested whether chronic oral application of magnesium L-threonate (MgT), which has been shown to improve memory in normal and aging animals by elevating Mg2+ i...

Software transactional memory (STM) is a programming abstraction for organizing access to shared mutable state in concurrent programs by dividing work into atomic units, called transactions. Dynamic STM builds on this idea by allowing extra runtime decisions about transactions and memory usage, therefore it is useful for working with dynamic-sized data structures. This review first introduces S...

in this paper a new method based on strut-and-tie model (stm) is proposed to determine the shear capacity of simply supported rc deep beams and an efficiency factor for concrete with considering the effect of web reinforcements. it is assumed that, the total carried shear force by rc deep beam provided by two independent resistance, namely diagonal concrete strut due to strut-and-tie mechanism ...