introduction proton therapy is used to treat malignant tumors such as melanoma inside the eye. proton particles are adjusted according to various parameters such as tumor size and position and patient’s distance from the proton source. the purpose of this study was to assess absorbed doses in eyes and various tumors found in the area of sclera and choroid and the adjacent tissues in radiotherap...

Cobalt porphine (CoP) dissolved in the organic phase of a biphasic system is used to catalyze O(2) reduction by an electron donor, ferrocene (Fc). Using voltammetry at the interface between two immiscible electrolyte solutions (ITIES), it is possible to drive this catalytic reduction at the interface as a function of the applied potential difference, where aqueous protons and organic electron d...

background: this study aimed at determining the prevalence and associated risk factors for asymptomatic malaria parasitaemia and anemia among blood donors in a private medical laboratory in benin city, nigeria. methods: venous blood was collected from a total of 247 blood donors. malaria status, abo, rhesus blood groups and hemoglobin concentration of all participants were determined using stan...

Carboxylic acids are Brønsted-Lowry acids, they are proton donors. They are the most common type of organic acid. Among the simplest examples are the formic acid H-COOH, that occurs in ants, and acetic acid H3C-COOH group, that gives vinegar its sour taste. Acids with two or more carboxyl groups are called dicarboxylic, tricarboxylic, etc. The simplest dicarboxylic example is oxalic acid (COOH)...

background: blood transfusion is one of the most crucial needs of the society in multiple diseases and injuries. the only source of blood is donation. students consist a large and healthy group who are able of providing a large number of blood donation, however, blood donation is rare amongst them. this study was conducted to evaluate students awareness and attitude towards blood donation in ke...

abstract: genotyping of the hepatitis c virus (hcv) is important for designing therapeutic strategies and regional specific diagnostic assays. the aim of this study was to identify the hcv genotypes in hcv infected blood donors. this is the first report on hcv genotypes in blood donors in iran. in this cross-sectional study, 103 blood donors with hepatitis c were investigated for hcv genotypes....

Introduction: Many study shown the effectiveness dose enhancement with gold nanoparticles (GNPs), especially with low-energy x-rays. Recently, proton beam radiation therapy (PBRT) has attention as a treatment for tumors. The advantage in PBRT, which releases high dose at the controllable Bragg peak position that localized for Au target and the released dose increased in depth....