نتایج جستجو برای: selectivity factor

تعداد نتایج: 887182  

Journal: :Optics express 2017
Enas Sakr Peter Bermel

Deliberate control of thermal emission properties using nanophotonics has improved a number of applications including thermophotovoltaics (TPV), radiative cooling and infrared spectroscopy. In this work, we study the effect of simultaneous control of angular and spectral properties of thermal emitters on the efficiencies of TPV systems. While spectral selectivity reduces sub-bandgap losses, ang...

Journal: :Chemistry & biology 2000
B A Katz R Mackman C Luong K Radika A Martelli P A Sprengeler J Wang H Chan L Wong

BACKGROUND Urokinase-type plasminogen activator (uPA) is a protease associated with tumor metastasis and invasion. Inhibitors of uPA may have potential as drugs for prostate, breast and other cancers. Therapeutically useful inhibitors must be selective for uPA and not appreciably inhibit the related, and structurally and functionally similar enzyme, tissue-type plasminogen activator (tPA), invo...

2017
Enas Sakr Peter Bermel

Simultaneously controlling both the spectral and angular emission of thermal photons can qualitatively change the nature of thermal radiation, and offers a great potential to improve a broad range of applications, including infrared light sources and thermophotovoltaic (TPV) conversion of waste heat to electricity. For TPV in particular, frequency-selective emission is necessary for spectral ma...

Journal: :Advanced Energy Materials 2021

Most organic compounds are conventionally synthesized under high temperature and elevated pressure, resulting in significant energy consumption wastage. Heterogeneous photocatalytic oxidation has the potential to provide a green route for synthesis of majority industrially important chemicals. The major limiting factor affecting efficiency is lack selectivity; therefore, substantial effort been...

M.R. Hadjmohammadi

Effects of temperature and percentage of organic modifier were studied on retention and selectivity in RP-HPLC using solvation parameter model. The system constants were determined by multiple linear regression analysis from experimental values in the retention factor for a group of different solutes with known descriptors by computer using the program SPSS/PC. The experimental results showed t...

ژورنال: مواد پرانرژی 2017

Identifying minor amounts of explosives with sensitivity, selectivity, accuracy and speed can be a great advantage for applications related to national security and environmental monitoring.Unfortunately, identification with high reliability of explosives is still a challenge and is largely unfulfilled. Today, fluorescence-based methods are widely used to detect explosives and products derived ...

Abstract Background: Molecular imprinting is a method for synthesizing polymers with structure-selective adsorption properties with applications such as, selectivity binding, drug delivery systems and anti-bodies. The present study aims at optimizing the preparation of molecularly imprinted polymer (MIP) against l-phenylalanine, in order to increase phenylalanine-binding in Enzymatic Intestinal...

Journal: :Acta Crystallographica Section A Foundations of Crystallography 2004

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 1997
habib firouzabadi nasser iranpoor mohammad ali zolfigol

nitration of phenol and various 4-substituted phenols with cu(no3)2.3h2o, cu(no3)2.3h2o/sio2, 9h2o and cr(no3)2. 9h2o in different anhydrous organic solvents are investigated. high selectivity ratio of para vs ortho isomers has been observed. mono- and dinitro compounds from phenol and 4-substituted phenols by choosing the proper solvents and reaction conditions, are also obtained with high sel...

Journal: :The Annual review of sociology 1996

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