Because of the dose limit for critical structures such as brainstem and spinal cord, administering a dose of 60 Gy to patients with recurrent head and neck cancer is challenging for those who received a previous dose of 60-70 Gy. Specifically, previously irradiated head and neck patients may have received doses close to the tolerance limit to their brainstem and spinal cord. In this study, a re...

abstract background: cervical cancer is the most common female genital tract malignancy and is the major cause of death from gynecologic cancer worldwide. the majority of cervical cancers develop through a series of gradual, precancerous lesions. screening asymptomatic women with regular pap smears allows diagnosis of the readily treatable preinvasive phase. we performed this study to determine...

abstract limitations of traditional (conventional) soil surveys and improvement of information technology have lead soil surveyors to invent new methods which are generally called digital soil mapping (dsm). the aim of these methods is the prediction of soil classes or soil properties based on easily-available or measuring environmental variables. the objective of this investigation is to study...

This study investigated the posterior movement of the spinal cord after posterior decompression surgery and evaluated factors affecting postoperative functional recovery in patients with cervical spondylotic myelopathy (CSM). Thirty-two patients with CSM underwent posterior decompression from C3 to C7 through laminectomy (n=12) and single, open-door laminoplasty (n=20). There were no significan...

Disruptive technologies provides unparalleled opportunities to contribute the identifications of many aspects in pervasive healthcare, from adoption Internet Things through Machine Learning (ML) techniques. As a powerful tool, ML has been widely applied patient-centric healthcare solutions. To further improve quality patient care, Electronic Health Records (EHRs) are commonly adopted facilities...

In this paper energy bands and Berry curvature of graphene was studied. Desired Hamiltonian regarding the next-nearest neighbors obtained by tight binding model. By using the second quantization approach, the transformation matrix is calculated and the Hamiltonian of system is diagonalized. With this Hamiltonian, the band structure and wave function can be calculated. By using calculated wave f...

THE object of this note is to put forward the hypothesis that hour-glass stricture of the stomach occurs in persons with a chronic simple gastric ulcer of the lesser curvature, because these persons also have chronic iron deficiency, and that the stricture would not occur without the co-existence of the iron deficiency. Seven cases are described. An association with Plummer-Vinson stricture of ...

in this study the land surface in western half of hyper-arid lut desert, in south east of iran, which is covered by yardangs, a worldwide typical landform for aeolian erosion, were classified by self organizing maps (som) method. in the first step by using digital elevation model with 10 m resolution and matlab software, 22 morphometric parameters were calculated based on derivative of the surf...