abstract urinary retention, a rare childhood problem which is most commonly caused by urinary tract infection. however, neurological neoplasm must also be considered in differential diagnosis. we report here a 3 year old girlthat was referred to the pediatrics department of kashan university of medical sciences (kaums) with a history of urinary retention for 10 days. by insertion of a foley cat...

background & importance: disc herniation is defined as the prolapsed of material disc into the spinal canal. if the disc fragment is free in spinal canal, it is called sequestration disc fragment. occasionally, alteration in sequestration disc fragment makes the diagnosis of the disc herniation, challenging. case presentation: we reviewed a rare case of the cervical sequestrated disc herniation...

the objectives of the present study were to investigate the prevalence of histologic thyroids lesions and the respective thyroid hormones changes of ewes in an endemic goiter region and to find out any impact of this condition on the fetal thyroid structures and serum thyroid hormones. in the present study a total number of 100 pregnant ewes and their fetuses slaughtered at slaughterhouse were ...

background and objectives: study of deleterious effect of neurotoxins on the animals' brain is a fascinating research plan. in this project, the damage effect of colchicine on the hippocampal cornu ammonis 1 (ca1) was examined by the studying the hippocampal tissue. materials and methods: injections of colchicine (1-75 μg/rat, intra- hippocampal ca1) were performed in cannulated male wistar rat...

coincidental occurrence of hepatocellular carcinoma (hcc) and cholangiocarcinoma, known as “collision tumors”, within a cirrhotic liver is rare. herein, we report a case of liver transplantation (lt) in a patient with such collision tumors. our patient was a 56-year-old woman with hepatitis c virus-related cirrhosis and 2 focal hepatic lesions, measuring 1.5 and 3 cm, in the liver segments 8 an...

introduction: an important consideration in endodontic treatment is the elimination of microorganisms, including fungi, from the complex three- dimensional root canal system. candida albicans (ca) has a major role in endodontic treatment failure as the most important fungus isolated from the root canal system. the present study was carried out to evaluate the presence of ca in the teeth requiri...

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Abstract Visual mapless navigation (VMN), modeling a direct mapping between sensory inputs and agent actions, aims to navigate from stochastic origin location prescribed goal in an unseen scene. A fundamental yet challenging issue visual is generalizing new Furthermore, it of pivotal concern design method make effective policy learning. To address these issues, we introduce novel model, which i...

The low efficiency of existing power amplifiers (PAs) is causing excessive energy consumption in wireless systems. Improving the PA efficiency is therefore of great environmental and economical importance. This thesis address a wide range of advanced PA design methods and novel PA architectures that all contribute to significantly improve the efficiency of PAs for wireless applications. The fir...