Structural identification of graphene films and nanoislands on 6H-SiC(0001) by direct height measurement.

By combining non-contact atomic force microscopy (nc-AFM) and Kelvin probe microscopy (KPFM) in ultra high vacuum environment (UHV), we directly measure the height and work function of graphene monolayer on the Si-face of 6H-SiC(0001) with a precision that allows us to differentiate three different types of graphene structures : zero layer graphene (ZLG), Quasi free-standing monolayer graphene (QFMLG) and bilayer graphene (BLG). The height and work function of ZLG are 2.62 ± 0.

Gastrointestinal stromal tumors of the stomach: A 10-year experience of a single-center.

Background: Gastrointestinal tract stromal tumors (GIST) are the most common mesenchymal tumors in the gastrointestinal tract (GIS). GISTs may cause significant morbidity and mortality rates.

Aim: In this study, it was aimed to evaluate 10 years of gastric GIST cases followed in our hospital, and to analyze the prognostic factors.

Gastrointestinal Stromal Tumours of the Small Intestine.

Objectives: To describe the spectrum of small intestine gastrointestinal stromal tumour (GIST) cases; and to analyse prognostic factors.

Study Design: Descriptive study.

Place And Duration Of Study: Kartal Dr.

Surgical results of Hartmann procedure in emergency cases with left-sided colorectal cancer.

Objective: We aimed to define indication of Hartmann procedure (HP) under emergency conditions, analyze, and present in which cases this procedure should be used.

Methods: The patients who underwent emergency surgery for colorectal cancer were analyzed. Rates of mortality, overall, and disease-free survival of the patients were evaluated.

Directed evolution of artificial repeat proteins as habit modifiers for the morphosynthesis of (111)-terminated gold nanocrystals.

Natural biocomposites are shaped by proteins that have evolved to interact with inorganic materials. Protein directed evolution methods which mimic Darwinian evolution have proven highly successful to generate improved enzymes or therapeutic antibodies but have rarely been used to evolve protein-material interactions. Indeed, most reported studies have focused on short peptides and a wide range of oligopeptides with chemical binding affinity for inorganic materials have been uncovered by phage display methods.