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Register a new userمقارنة طرائق معايرة الكرياتينين في المصل
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بديع صيرفي( باحث )
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تعد مقايسة الكرياتينين في المصل أختبار لوظيفة الكلية و تستخدم من أجل ذلك طرائق متعددة الا أن معظم المخابر تتكبف بأستخدام طريقة ما للمقايسة. قمنا في هذا البحث بدراسة ثلاثة طرق : الأولى تعتمد على تقانة الأستشراب سائل عالي الكفاءة ، الثانية تعتمد على تفاعل Jaffé الذي يستند على التفاعل مع البكرات القلوية بعد عملية تجريد المصل من بروتيناته, الثالثة تعتمد على تفاعل Jaff é و بشكل مباشر و ذلك في درجتين من الباهاء 10 PH و 11.5 PH و الفارق في قراءة التماصين يتماشى مع تركيز الكرياتينين . وجدنا علاقة قوية بين الطريقة المباشرة و الطريقة التي تعتمد على الأستشراب سائل عالي الكفاءة، لذلك ننصح بتطبيقها في العمل الروتيني في مخابر التحاليل الطبية.
No English abstract
References used
TEITZ:textbook of clinical chemistry.saunders 1986
TEITZ:textbook of clinical chemistry and moleculer diagnostics .saunders 2006
YATZIDIS,H:clinical chemistry 1974
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Camera calibration has always been an essential component of photogrammetric
measurement, especially in high-accuracy close-range applications. Although the rapid
growth in adoption of digital cameras in 3D measurement applications, there are many
situations where the geometry of the image network will not support robust recovery of
camera parameters via on-the-job calibration. For this reason, stand-alone camera
calibration has again emerged as an important issue in photogrammetry and computer
vision.
In this paper, we give a rapid overview of the approaches adopted for camera
calibration in photogrammetry and computer vision. Also, we compare the method of selfcalibration,
largely used in photogrammetry, with the tow-steps method applied in
computer vision for digital camera calibration.
This study aims to analyze the serum iron levels in children with recurrent respiratory and urinary infection .
It includes 176 children who consulted the children department in Al-Assad University hospital in Lattakia and its external clinics durin
g the period between 1/1/2012 and 1/1/2014 whose ages were between 1-9 years old .
The recurrent respiratory infections were in 75 patients and the urinary recurrent infections in 21 patients. 80 healthy children didn't show any recurrent infection or chronic diseases.
This study showed that the mean serum iron level in children with recurrent respiratory infection and those who had recurrent urinary infection compared to serum levels in healthy children was less .
It is also found that recurrent respiratory and urinary infection increases with the reduction of hemoglobin.
Linear regression methods impose strong constraints on regression models, especially on
the error terms where it assumes that it is independent and follows normal distribution, and
this may not be satisfied in many studies, leading to bias that can
not be ignored from the
actual model, which affects the credibility of the study.
We present in this paper the problem of estimating the regression function using the
Nadarya Watson kernel and k- nearest neighbor estimators as alternatives to the parametric
linear regression estimators through a simulation study on an imposed model, where we
conducted a comparative study between these methods using the statistical programming
language R in order to know the best of these estimations. Where the mean squares errors
(MSE) was used to determine the best estimate.
The results of the simulation study also indicate the effectiveness and efficiency of the
nonparametric in the representation of the regression function as compared to linear
regression estimators, and indicate the convergence of the performance of these two
estimates.
Recent advances in membrane filtration technology provided new
opportunities for large scale low – cost protein fractionation from whey .
Exposure of whey to a pH of 5.0 prior to micro filtration using a 0.1 μm
ceramic membrane led to optimised re
tention of higher molecular weight
proteins immunoglobulin, bovine serum albumin and lactoferrin. The resulting
permeate contained a protein fraction enriched in Alfa – lactalbumin and Beta
– lactoglobulin. Enrichment of Alfa –lactalbumin relative to Beta –lactoglobulin
was accomplished using new UF ceramic membranes with different molecular
weight cut – off.
Terfenadine reacts with mixed anhydriedes (Malonic and acetic anhydrides)
producing a yellow-coulored product with intense fluorescence. Based on this
fact, a spectrophotometric method was developed for the determination of
terfendaine in dosage f
orms. The relation between the absorbance at 395 nm and
the concentration is rectilinear over the range 0.5-5 μg.ml-1. The reaction product
was also measured spectrofluorimetrically at 435 nm after excitation at 395 nm.
The fluorescence intensity was directly proportional to the concentration over the
range 0.5-4 ng.ml-1. The different parameters affecting the development and
stability of the reaction product were carefully studied and incorporated into the
procedure. The proposed spectrophotometric method was successfully applied to
the determination of terfenadine in tablets and suspensions; the % recoveries
were 99.83 ± 0.75 and 99.65 ± 0.83, respectively. The proposed
spectrofluorimetric method was applied to the determination of terfenadine in
spiked human plasma. the % recovery was 99.35 ± 2.19. The method is highly
sensitive and specific. No interference was noticed from co-formulated drugs,
such as pseudoephedrine and ibuprofen.
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