Selenium is an essential nutritional mineral, and selenium deficiency diseases are known in medical literature. Studies have shown that selenium intake in high doses is toxic in humans. Selenium is widely distributed in nature and due to the importan
ce of selenium and its compounds in industrial applications; several analytical techniques have been reported to estimate selenium. In this study the optimal conditions for the formation of selenium complex with NEDA reagent will be studied and used for the control of selenium microcapsules, a method that is characterized by being rapid, sensitive and selective. The optical spectrophotometric method was used in the visible field at 540 nm wavelength to determine the complex between the selenium ion and the NEDA reagent under optimal conditions for complex formation namely temperature 50℃, time min t = 240, added reagent volume V=4ml, and reagent concentration 1%. This method showed good accuracy and correctness, as the method's validity was achieved through the relative percentage yield (R = 99.68%), while the accuracy of the method was achieved through the low value of the standard deviation (SD≤) (1.172) and thus the percentage relative standard deviation (RSD≤) (1.725). Selenium microcapsules were prepared, with an entrapment efficiency of 36% at a concentration of 3% for alginate and 1% while the entrapment efficiency rose to 51.2% at a concentration of 2% for calcium chloride.
This study aims to investigate the subject of digital currencies and identify if there is a correlation between digital currencies and electronic commerce, determine if there is a correlation between digital portfolios and electronic commerce, as wel
l as finding out if there are difficulties in the application of digital currency in the United Arab Emirates.
New, accurate, sensitive and reliable kinetic spectrophotometric
method for the assay of fluvastatin sodium (FVS) in pure form and
capsules has been developed. The method involves the oxidative
coupling reaction of FVS with 3-methyl-2-benzothiazolinone hydrazone
hydrochloride monohydrate (MBTH) in the presence of Ce(IV) in an
acidic medium to form colored product with lambdamax at 615 nm.
The study included 49 cases of clubfoot in 30 patient between 2008-2013 , 21 male (70%) , 9 female ( 30 % )
The female to male ratio was 1 : 2.3 .
The patients were treated by two methods :
the traditional method with success rate 54%.
the ponseti method with success ratio 83% .
the most complication after treatment in the two methods was forefoot adductor .
Loan portfolios occupies an important position within the balance sheet of
commercial banks, considering that the efforts and decisions of management aim primarily
at building a good loan portfolios, that achieve high returns for banks at the lowes
t levels
of risks.
The research aims to assess the extent of compliance to the theoretical, scientific and
practical principles in the composition of loan portfolios of the public and private
commercial banks in the Syrian Coast: the principle of diversification; principle
of relevance ;the criteria for granting credit; and Advanced Capital Adequacy Framework–
Basel II. The research aims to draw important conclusions and recommendations to help
Syrian commercial banks(public and private) in reducing credit risk.
إن الهدف من البحث هو الوقوف على آلية عمل المصارف الإسلامية وتسليط الضوء على حيثيات عمل المحافظ والهدف من إدارتها الذي يتمثل بتحقيق مستوى أمثل
