First-principles descriptors of CO chemisorption on Ni and Cu surfaces.

A comprehensive analysis of low coverage CO adsorption on Ni and Cu low-index miller surfaces - (100), (110), and (111) - over all the possible adsorption sites is presented. Systems are theoretically studied within an accurate adsorption model using RPBE density functional calculations to obtain electronic and geometrical structure predictions along with their corresponding adsorption energy computations. Based on the surface- and site-dependent comparisons of the adsorption mechanisms, we were able to grasp trends that point to the factors that determine the final C-O structure upon adsorption.

Unveiling CO adsorption on Cu surfaces: new insights from molecular orbital principles.

CO adsorption on Cu(100), (110), and (111) surfaces has been extensively studied using Kohn-Sham density functional theory calculations. A holistic analysis of adsorption energies, charge transfer, and structural changes has been employed to highlight the variations in adsorption mechanisms upon changing the surface type and the adsorption site. Each surface, with its unique arrangement of atoms, resulted in a varying adsorbate behavior, although the same adsorption site is considered.

Long-term rifaximin therapy as a primary prevention of hepatorenal syndrome.

Background: Hepatorenal syndrome (HRS) is a severe complication of liver cirrhosis, with poor survival. Rifaximin is a gut-selective broad-spectrum antibiotic.

Aim: The aim of this study was to evaluate the role of rifaximin as a primary prevention of HRS.

Patients seeking liver transplant turn to China: outcomes of 15 Egyptian patients who went to China for a deceased-donor liver transplant.

Objectives: Increasing numbers of Egyptians with end-stage liver disease seek liver transplants in China because of lower costs and shorter wait times.We evaluated outcomes of Egyptian patients who underwent liver transplants in China and address ethical concerns.

Material And Methods: Fifteen Egyptian patients (11 men, 4 women; mean age, 52 years) who underwent liver transplants in China were included.

Gene deletion of glutathione S-transferase M1 and T1 and risk factors of hepatocellular carcinoma in Egyptian patients.

Genetic polymorphic forms of glutathione-S-transferase (GST) were found to be associated with risk for various malignancies. The present study was undertaken to evaluate the risks-associated with GSTT1 and GSTM1 gene polymorphisms and hepatitis virus-related hepatocellular carcinoma (HCC) in an Egyptian population. Sixty patients diagnosed with HCC were subdivided into 3 groups: group I, 31 patients with HCC and HCV-related cirrhosis; group II, 19 patients with HCC and HBV- related cirrhosis and group III, 10 patients with HCC and cirrhosis of non-viral aetiology.