The multiwavelength UV/Vis detector: New possibilities with an added spectral dimension

The multiwavelength (MWL) detector is a new type of absorption detector for AUC. The commercial absorption detector of the Beckman Coulter XLA AUC can only handle a single wavelength per scan with the possibility to scan at maximum 3 wavelengths, whereas MWL-AUC can handle all the wavelengths in the UV/Vis region at one time. The result is impressive since now a full spectral dimension is added to each single scan. In this chapter, we are explaining development history, instrumentation, and future perspective of MWL-AUC

Investigation of negative resistance induced by directional scattering in a two dimensional electron gas /

In the last decades, it became possible to manufacture high mobility twodimensional conductors. The study of electron transport in such two dimensional conductors has led to discovery of many new physical phenomena, two of which were awarded with Nobel prizes. The reduction in the dimensions of a conductor drastically changes the scattering properties of carriers. Intercarrier scattering angle is also severely reduced in two dimensions. Recently, it was shown that this kind of directional scattering can be exploited to achieve electron multiplication and absolute negative resistance in a three terminal configuration. Experimental results suggest that such an effect should boost as the device size shrinks and can be useful to fabricate compact high frequency sources that are not yet within the reach of conventional semiconductor devices. The purpose of this thesis is to extend further the experimental study of such phenomena, and in particular, to understand its dependence on the device size. For this a new fabrication method has been developed. This method gives a greater flexibility to shrink the device size down to sub-microns. The new generation of fabricated devices produce high electron multiplication ratios up to 5

Evaluation of International Mergers and Acquisitions through a case study- Garanti Bank, Turkey

The aim of this dissertation is to study the process of cross-border mergers and acquisitions (M&As). This is achieved by understanding the general concept of mergers and acquisitions and then considering case study of Garanti Bank (a Turkish bank) which is an example of a successful international M&A. Due to increased globalisation, the world has witnessed an increasing trend in international M&As, however the success rates are not high. Therefore, through analysing the Garanti Bank acquisition, this study aims to evaluate the process of international M&A and identify the factors which play a vital role in its success. To achieve this objective, the existing research on the process of M&As is reviewed in depth, starting with pre-M&A issues like driving factors for M&A decisions and continuing with post-M&A issues like company performance. This study concludes with the reasons behind the successes or failures of such initiatives. The knowledge constructed through the literature review is used in the discussion of the case study, where both primary and secondary data are used for analysing the acquisition. The analysis is based on semi-structured interviews (primary data) and data collected from newspapers, press releases and company web pages (secondary data), in order to illustrate and clarify the processes underlying Garanti Bank’s acquisition. This research concludes with the key differences in the acquisition process that make the case of Garanti Bank a success

XPS analysis with pulsed voltage stimuli

We record XPS spectra while applying 0 to +10 V or 0 to -10 V square pulses to the sample rod, which normally results in twinning of all peaks at correspondingly increased (for +10 V) or decreased (for -10 V) binding energies. For poorly conducting samples, like silicon oxide layer on a silicon substrate, the twinned peaks appear at different energies due to differential charging, which also vary with respect to the frequency of the applied pulses. Moreover, the frequency dependence varies with the thickness and can be correlated with the capacitance of the oxide layer. The technique is simple and can lead to extract important information related with dielectric properties of surface structures in a totally non-contact fashion. © 2005 Elsevier B.V. All rights reserved

Low Loss RF MEMS Phase Shifters for Satellite Communication Systems

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/76391/1/AIAA-2002-1895-175.pd

Squamous Cell Lung Carcinoma Presenting with Erythema Annulare Centrifugum

Erythema annulare centrifugum (EAC) is a permanent or migrating eruption characterized by annular, arcuate, or polycyclic erythematous lesions that expand to the periphery when the medial parts fade.  The pathogenesis of erythema annulare centrifugum is unknown, but it is probably due to a hypersensitivity reaction to a variety of agents, including drugs, arthropod bites, infections, ingestion, and malignancy.. We describe here a 52 year-old man affected by EAC; who upon further examination was diagnosed as squamous cell carcinoma of the lung (SCCL). This is the first case of EAC presented with SCCL to our knowledge. Etiology oriented research performed on EAC patients will help in early diagnosis and treatment of malignancies.</p

Editorial note

[No abstract available

The association of cognitive impairment with gray matter atrophy and cortical lesion load in clinically isolated syndrome

Background Multiple sclerosis can impair cognition from the early stages and has been shown to be associated with gray matter damage in addition to white matter pathology. Objectives To investigate the profile of cognitive impairment in clinically isolated syndrome (CIS), and the contribution of cortical inflammation, cortical and deep gray matter atrophy, and white matter lesions to cognitive decline. Methods Thirty patients with clinically isolated syndrome and twenty demographically- matched healthy controls underwent neuropsychologic assessment through the Rao Brief Repeatable Battery, and brain magnetic resonance imaging with double inversion recovery using a 3T scanner. Results Patients with clinically isolated syndrome performed significantly worse than healthy controls on tests that evaluated verbal memory, visuospatial learning and memory, and verbal fluency. Significant deep gray matter atrophy was found in the patients but cortical volume was not lower than the controls. Visual memory tests correlated with the volume of the hippocampus, cerebral white matter and deep gray matter structures and with cerebellar cortical atrophy. Cortical or white matter lesion load did not affect cognitive test results. Conclusion In our patients with CIS, it was shown that cognitive impairment was mainly related to cerebral white matter, cerebellar cortical and deep gray matter atrophy, but not with cortical inflammation, at least in the early stage of disease. © 2016 Elsevier B.V