نتایج جستجو برای: northern iran back calculation
تعداد نتایج: 463830 فیلتر نتایج به سال:
BACKGROUND Self-citation is one of the main challenges in the evaluation of researchers' scientific output. This study aimed at comparing the institutional self-citation among the universities located in Northern Iran. METHODS This study was conducted as a scientometric study. Research population included all scientific productions of 16 Northern Iran Universities with at least 100 indexed do...
a survey on the hover flies (diptera: syrphidae) fauna of northern iran, between 2010 and 2011, led to the discovery of the species pipiza accola violovitsh, 1985. both the genus and species are newly recorded from iran. all the specimens were collected from gilan and mazandaran provinces, using malaise traps. the diagnostic characters of p. accola and its geographical distribution is presented.
The female of Cordulegaster vanbrinkae is described and illustrated, basing on four specimens collected in Gīlān and Māzandarān Provinces, northern Iran. Their characters and variability are shown and compared with females of other Cordulegaster species.
BACKGROUND Anencephaly is a neural tube defect incompatible with life. The aim of this prospective study was to determine the prevalence of anencephaly in Gorgan, northern Iran. METHODS During 1998 - 2005, 49,534 newborns at Dezyani hospital in Gorgan were screened for neural tube defects. Clinical and demographic data of the diagnosed cases were recorded in a pre-designed questionnaire for a...
INTRODUCTION Chronic low back pain (LBP) is a common and costly health problem yet current treatments demonstrate at best, small effects. The concurrent application of treatments with synergistic clinical and mechanistic effects may improve outcomes in chronic LBP. This pilot trial aims to (1) determine the feasibility, safety and perceived patient response to a combined transcranial direct cur...
Late Neoproterozoic metamorphic – igneous rocks of the Shotor Kuh complex is located in the northern edge of the Central Iran structural zone. This complex crosscut by several Middle Jurassic diabasic dikes. Plagioclase, pyroxene and biotite are the essential rock-forming minerals of these dikes. Plagioclases have mostly andesine composition (An31-49). Pyroxenes have following compositions: En3...
INTRODUCTION Alveolar echinococcosis (AE) is a chronic, serious and sometimes lethal parasitic infection, which is caused by Echinococcus multilocularis (EM). AE has been reported to occur in people from the north of Iran; however, until now there have been no cases of AE reportedfrom the southern provinces, such as Khuzestan. CASE PRESENTATION Herein, we report our experiences with three cas...
specific elements (cr, al, ca, and si) and loss on ignition (loi) were used for semi-quantitative determination of the normative mineralogical composition of naturally occurring chromium ores in ophiolite complexes. by far the occurring ore minerals are complex both from the mineralogical and chemical viewpoints. the secondary minerals serpentine and cr-containing chlorite (kaemmererite) form n...
the community dynamics of aquatic coleoptera(insecta)in one of the spring-stream habitats of bammo national park in fars province called cheshmeh-ye-ghanbari is studied as a pilot project and model for acquaintance with and furthering the biodiversity studies on fauna of iran. sixteen species-populations out of nineteen of this community were already identified for their taxonomy and for thei...
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