تناول البحث أثر القدرة التنافسية في الاستثمار الأجنبي المباشر للبلدان العربية المصنفة ضمن مؤشر العالمية وهي (الجزائر، مصر، الأردن، المغرب، الكويت، السعودية، قطر، البحرين، عمان، الامارات)، للفترة (2009-2018) وانطلق من فرضية مفادها أن للقدرة والمتمثلة بالمؤشرات الفرعية لمؤشر علاقة وأثر موجب المباشر، ويهدف إلى تعريف مفهوم بعدها مفهوماً حديثاً وتحديد نوع العلاقة وأثرها ما بين والاستثمار عبر الاستفادة...

Background: Radiation-induced lung injury (RILI) is a serious concern in carbon-ion radiation therapy (CIRT) for thoracic malignancies. To estimate the induction of RILI after CIRT, translation of evidence in X-ray radiation therapy to CIRT is of great importance. However, the relative biological effectiveness (RBE) of carbon-ion beams in normal lung tissues is not fully elucidated, making the ...

BACKGROUND A knowledge-based radiation therapy (KBRT) treatment planning algorithm was recently developed. The purpose of this work is to investigate how plans that are generated with the objective KBRT approach compare to those that rely on the judgment of the experienced planner. METHODS Thirty volumetric modulated arc therapy plans were randomly selected from a database of prostate plans t...

PURPOSE To investigate the early and late toxicity of a hypofractionated radiotherapy (RT) schedule to treat muscle- invasive bladder cancer in relation to radiation parameters according to the organs at risk. METHODS Forty-three patients with T2-T3 bladder carcinoma were irradiated with a weekly hypofractionated schedule with a total dose of 36 Gy in 6 fractions. Included in this study were ...

Objectives: The present study is to evaluate Virtual Touch Tissue Quantification (VTQ) technique in the prevention of submandibular gland damage in patients with Nasopharyngeal Carcinoma (NPC) after Intensity-Modulated Radiation Therapy (IMRT). Material and method: A total of 61 patients diagnosed with NPC were treated with IMRT. All the patients underwent Ultrasonography (US) while submandibul...

The purpose of this study was to evaluate the difference in dose-volumetric data between the analytical anisotropic algorithms (AAA) and the two dose reporting modes of the Acuros XB, namely, the dose to water (AXB_Dw) and dose to medium (AXB_Dm) in lung stereotactic body radiotherapy (SBRT). Thirty-eight plans were generated using the AXB_Dm in Eclipse Treatment Planning System (TPS) and then ...

BACKGROUND To evaluate the impact of image-guided radiation therapy (IGRT) versus non-image-guided radiation therapy (non-IGRT) on the dose to the clinical target volume (CTV) and the cervical spinal cord during fractionated intensity-modulated radiation therapy (IMRT) for head-and-neck cancer (HNC) patients. MATERIAL AND METHODS For detailed investigation, 4 exemplary patients with daily con...

in this paper, size distribution of nano-bubbles was measured by the reliable and fast method of laserdiffraction technique. nano-bubbles were produced using a nano-bubble generator designed and madebased on hydrodynamic cavitation phenomenon in venturi tubes. a central composite design withresponse surface methodology was used to conduct a five factor, five level factorial experimental designo...

BACKGROUND High grade gliomas (HGG) are typically treated with a combination of surgery, radiotherapy and chemotherapy. Three dimensional (3D) conformal radiotherapy treatment planning is still the main stay of treatment for these patients. New treatment planning methods suggest better dose distributions and organ sparing but their clinical benefit is unclear. The purpose of the current study w...