نتایج جستجو برای: quality parameters

تعداد نتایج: 1280528  

Anvari M Khalili MA Mangoli E Pourentezari M, Talebi AR

Background: Acrylamid (AA) is found in carbohydraterich foods that are prepared at high temperatures, such as French fries and potato chips. The toxic effects of AA in male animals include degeneration of epithelial cells of seminiferous tubules, decreased number of sperm and elevation in abnormal spermatozoa. The aim of this study was to evaluate the detrimental effects of AA on sperm paramete...

2007
Maria Drakaki Alkis A. Hatzopoulos Stylianos Siskos Dimitrios K. Papakostas

— Various model parameter calculation equations of RF CMOS inductors are compared. The calculation equations are using as variables either Y, Z-parameters or S-parameters. Results are based on on-wafer RF S-parameter measurements of a 3.75 turn spiral inductor fabricated in AMIS 0.7 μm CMOS DM1P n-well technology. Results obtained with calculation equations for a differentially driven inductor ...

Journal: :global journal of environmental science and management 0
u.g. abhijna department of aquatic biology and fisheries, university of kerala,thiruvananthapuram 695581, india

multivariate statistical techniques such as cluster analysis, multidimensional scaling and principal component analysis were applied to evaluate the temporal and spatial variations in water quality data set generated for two years (2008-2010) from six monitoring stations of veli-akkulam lake and compared with a regional reference lake vellayani of south india. seasonal variations of 14 differen...

2009
Dylan F. Williams Paul D. Hale Jack C. M. Wang

We develop a covariance-matrix-based uncertainty analysis for vector-network-analyzer scattering-parameter measurements. The covariance matrix captures all of the measurement uncertainties and statistical correlations between them. This allows the uncertainties of vector-network-analyzer scattering-parameter measurements to be propagated into the uncertainties of other quantities derived from s...

2013
Jongmin Kim Duc Long Luong Wansoo Nah SoYoung Kim JONGMIN KIM

An efficient measurement methodology is proposed to construct the scattering parameters of a multi-port device using a four-port vector network analyzer (VNA) without the external un-terminated ports. By using the four-port VNA, the reflected waves from the un-terminated ports could be minimized. The proposed method significantly enhances the accuracy of the S-parameters with less number of mea...

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