نتایج جستجو برای: a sample 40
تعداد نتایج: 13517553 فیلتر نتایج به سال:
بیماری آلزایمر توسط تجمع و رسوب پپتید های بتا آمیلوئید درون مغز، که منجر به اختلال فعالیت سیناپسی و از دست رفتن نورون می گردد، شناخته میشود. مطابق با تئوری آمیلوئیدی، تعادل بین تولید بتا آمیلوئید و تجزیه آن، کلید توسعه بیماری آلزایمر است. افزایش سطح پپتید بتا آمیلوئید در مغز، عاملی برای بیماری آلزایمر در نظر گرفته می شود، به ویژه وقتی که الیگومرهای سمی بتا آمیلوئید شکل بگیرند. تجزیه بتا آمیلوئی...
We investigate Room squares and subsquares. All terminology is as in [6] and [7], and we will assume the reader is familiar with the definitions contained therein. (These include group-divisible designs, transverial designs, and frames.) We will refer to an incomplete Room square of side s missing a subsquare of side t as an (s, t)-incompZefe Room square. It is known that for any odd t, there i...
Forty patients with tuberculosis of the lower cervical spine (second to seventh cervical vertebrae) have been reviewed. Pain and stiffness were important and dominant symptoms. Two types of disease were recognised. In children under 10 years old involvement was extensive and diffuse with the formation of large abscesses. In patients over 10 the disease was localised and produced less pus, but w...
to detection of suitable sampling method to study tree canopy cover in the northern zagros forest, baneeh region forest, kurdistan province, and west of iran was selected. 40 square sample plots one hectare (100×100 m) were selected and perfect inventoried. in every sample plot the position of tree, kind of species and two diameter of crown (m) were recorded. to study of canopy cover different ...
in this paper, the morphology, roughness and nano structural properties of sio2/poly vinyl pyrrolidone synthesized with sol gel method, characterized by using scanning electron microscopy, atomic force microscopy and gps132a techniques.the main material taken from oxide silicon with weight percentage of 20, 40, 60, 80 and from poly vinyl pyrrolidone with percentages of 80, 60, 40, 20 is synth...
AIM To type a set of 194 US African American, Caucasian, and Hispanic samples (self-declared ancestry) for 40 autosomal single nucleotide polymorphism (SNP) markers intended for human identification purposes. METHODS Genotyping was performed on an automated commercial electrospray ionization time-of-flight mass spectrometer, the PLEX-ID. The 40 SNP markers were amplified in eight unique 5plex...
The year 2020 roughly corresponds with the 40th anniversary of rise political Islam on world stage. This topic has generated controversy about its impact Muslims societies and international affairs more broadly, including how governments should respond to this socio-political phenomenon. article modest aims. It seeks reflect broad theme four decades after it first captured global headlines by c...
Magnetic resonance microimaging was used to measure diffusion decay over an extended b-factor range in a formalin-fixed normal prostate sample and a Gleason pattern 3+4 cancer tissue sample. The coefficients of biexponential fits to diffusion decay data from 1600 voxels of dimension 160 × 160 × 160 μm(3) in each sample were correlated with underlying epithelial and stromal compartment partial v...
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