نتایج جستجو برای: detection limit

تعداد نتایج: 731870  

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 1993
mojtaba shamsipur mir fazlollah mousavi

sulphide was determined spectrophotometrically at 628 nm and ph 6.7 based on its catalytic reduction of toluidine blue in the presence of se(iv) using a flow injection system. after optimization of the measuring conditions the calibration curve was found linear up to 25 mg/ml and the detection limit was 0.3 mg/ml (30 ml injections). the relative standard deviation for the determination of 10 mg...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2010
mohammad mazloum-ardakani roya mazidi mohammad hossein mashhadizadeh hossein naeimi kobra rabiei

in this work we introduce a practical use of synthesized schiff base metal complex in sensing application. a new perchlorate-selective electrode based on the complex n, n'-4-nitro-phenylmethanebis-(salicylaldiminato) copper (ii) [cul] as the membrane carrier was developed. the electrode exhibits a good  nernstian slope of -55.0 ± 1.0 mv/decade and a linear range of  for perchlorate. the limit o...

Ghasem Janbabaie, Kamran Ali-Moghaddam, Mohamad Taghi Hedayati, Mohsen Ashrafi, Mojtaba Nabili, Tahereh Shokohi,

Background: Candida albicans (C. albicans) is a major cause of candidaemia in people with impaired immunity. Blood culture is a “gold standard” for candidaemia detection but is time-consuming and relatively insensitive. We established a real-time PCR assay for C. albicans detection in blood by LightCycler PCR and melting curve analysis. Methods: Five milliliter blood samples from...

2018
Jingwen Ma Jun Wang Min Wang Guoliang Zhang Wenchao Peng Yang Li Xiaobin Fan Fengbao Zhang

Mass transfer plays a significant role in a sensor's performance, because the substrate can be detected only when it contacts with the active catalytic surface. In this work, cuprous oxide mesoporous nanospheres (Cu₂O MPNS) with different pore size distributions are fabricated and applied as electrocatalysts for glucose detection. The small pore Cu₂O (SP-Cu₂O, mean pore size of 5.3 nm) and larg...

2009
Peder Skafte-Pedersen Pedro S. Nunes Sanshui Xiao Niels Asger Mortensen

We discuss the detection limit for refractometric sensors relying on high-Q optical cavities and show that the ultimate classical detection limit is given by min {Δn} ≳ η, with n + iη being the complex refractive index of the material under refractometric investigation. Taking finite Q factors and filling fractions into account, the detection limit declines. As an example we discuss the fundame...

Journal: :jundishapur journal of microbiology 0
saeed shams department of medical bacteriology, faculty of medical sciences, tarbiat modares university, tehran, ir iran bita bakhshi department of medical bacteriology, faculty of medical sciences, tarbiat modares university, tehran, ir iran; department of medical bacteriology, faculty of medical sciences, tarbiat modares university, tehran, ir iran. tel: +98-2182884558, fax: +98-2182884555 tahereh tohidi moghadam department of nanobiotechnology, faculty of biological sciences, tarbiat modares university, tehran, ir iran

materials and methods in silico analysis of the cadf gene was carried out by several software and available online tools. a duplex pcr optimized with specific primers was used for detection and differentiation of both species. to evaluate specificity and sensitivity of the test, a panel of different campylobacter spp. together with several intestinal bacterial pathogens was tested. the limit of...

Journal: :The Journal of Applied Laboratory Medicine: An AACC Publication 2016

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