We consider the stability properties of spatial and temporal periodic orbits of one-dimensional coupled-map lattices. The stability matrices for them are of the block-circulant form. This helps us to reduce the problem of stability of spatially periodic orbits to the smaller orbits corresponding to the building blocks of spatial periodicity, enabling us to obtain the conditions for stability in...

During spring, summer and winter seasons, Sistani donor cows, with normal reproductive status, were superovulated and embryos were recovered non-surgically on day 7. Grade A blastocyst embryos were either transferred fresh (spring) or frozen (summer and winter). Recovered embryos during summer and winter were exposed to glycerol and frozen using conventional method. During spring season, recipi...

how to cite this article: khoddami m, akbarzadeh a, mordai a, bidari zerehpoush f, alipour h, samadzadeh s, alipour b.diagnostic accuracy of frozen section of central nervous system lesions: a 10-year study. iran j child neurol. 2015 winter;9(1):25-30.   abstract objective definitive diagnosis of the central nervous system (cns) lesions is unknown prior to histopathological examination. to dete...

pancoast tumor accounts for 3%-5% of all non-small cell lung carcinomas. this tumor has a distinct clinical presentation through local invasion and the resulting clinical entity called pancoast syndrome. this syndrome includes severe shoulder pain, arm pain, and horner’s syndrome andatrophy of forearm and hand muscles. the differential diagnosis of arm and shoulder pain is extensive. thoracic o...

background: to explain the role of arthroscopic release in intractable frozen shoulders. we used different questionnaires and measuring tools to understand whether arthroscopic release is the superior modality to treat patients with intractable frozen shoulders. methods: between 2007 and 2013, in a prospective study, we enrolled 80 patients (52 females and 28 males) with recalcitrant frozen sho...

background: fine needle aspiration (fna) has led to a decrease in unnecessary surgeries for thyroid nodules. this study was designed to compare diagnostic value of fna and frozen section methods in the follicular lesions. methods: this is a cross-sectional study based on the medical records of 42 patients who were referred to surgery clinic of rasool-e-akram hospital in tehran with complaint of...

thrombotic thrombocytopenic purpura is the result of multiple thrombus disseminated in small arterioles throughout the body. principle damage is in the endothelium of small vessels and capillaries. from 1982 to 1999, 28 patients (16 female and 12 male) have been treated for ttp. the outcome was evaluated for risk factors and prognosis. these patients were 18 to 69 years old. all had neurologica...