منابع مشابه
Hydraulic fracturing and its peculiarities
Methods: A cohesive fracture model is adopted together with a discrete crack and without predetermined fracture path. The fracture is filled with interface elements which in the 2D case are quadrangular and triangular elements and in the 3D case are either tetrahedral or wedge elements. The Rankine criterion is used for fracture nucleation and advancement. In a 2D setting the fracture follows d...
متن کاملWomen and the metabolic syndrome: an overview of its peculiarities.
OBJECTIVE The peculiarities of the Metabolic Syndrome in women regarding frequency, pathophysiology, manifestations and therapy will be analyzed. Recommendations will be given for prevention of metabolic syndrome and possible reduction of risks factors for cardiovascular disease. METHODS A review of pertinent studies serves as the basis for the analysis and recommendations of therapeutic stra...
متن کاملPollen peculiarities
In flowering plants, male meiosis occurs in the microsporocyte to produce four microspores, each of which develops into a pollen grain. The image at top left is a transmission electron micrograph of a wild-type microspore from Arabidopsis thaliana, showing the single, central nucleus. The tetraspore (tes) mutant of Arabidopsis fails to undergo cytokinesis at the end of male meiosis and all four...
متن کاملpetrology and geochemistry of khar-bash (western shahrood) and its relation ship to iron mineralization
منطقه مورد مطالعه در 23 کیلومتری جنوب غرب شهرستاشاهرود قرار دارد که در نقشه 100000/1 شاهرود قرار گرفته است.ناحیه مورد مطالعه در تقسیمات ساختاری ایران بخشی از زون البرز شرقی است . در طی سنوزوئیک این زون به شدت تحت تأثیر فازهای کوهزایی آلپی قرار گرفته و فعالیت های آتشفشانی انوسن در قسمت های غربی آن دیده می شود . از نظر ترکیب سنگ شناسی منطقه مورد مطالعه متنوع و بیشتر شامل سنگ های رسوبی مانند : آ...
15 صفحه اولPeculiarities of Prion Diseases
Prion diseases (PrDs) are transmissible and fatal neurodegenerative diseases naturally occurring in humans and animals, ‘‘mad cow’’ disease being the most infamous. Their development and propagation requires endogenous prion protein (PrP) and derives from the conversion of PrP to a misfolded form, which combines with other misfolded PrP molecules to form small nuclei (seeds). The seeds can then...
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ژورنال
عنوان ژورنال: Revista Virtual de Química
سال: 2018
ISSN: 1984-6835
DOI: 10.21577/1984-6835.20180072