A cross-linked polyethyleneimine polymer containing the[ZnWZn2(H2O)2(ZnW9O34)2] poly-oxometalate was prepared from branched polyethyleneimine(Mw ) 600), the polyoxometalate, and an-octylamine-epichlorohydrin cross-linking reagent. This catalytic assembly was active for the selectiveoxidation of 2-alkanols to 2-alkanones with aqueous H2O2 with reactions presumably occurring a...

A simple, accurate and sensitive voltammetric method for determination of Anagrelide (ANG) using β cyclodextrin modified carbon paste electrode (CDMCPE) is developed. CDMCPE exhibited significantly increased sensitivity and selectivity for ANG compared to Carbon paste electrode. Peak currents showed a linear response in the concentration range 1.8 × 10-9 to 1.6 × 10-6 M at CDMCPE. Limit of dete...

The modulatory effect of amiloride on glycine-activated current (I(Gly)) was investigated in acutely dissociated rat spinal dorsal horn neurons using the whole-cell patch clamp technique. Amiloride inhibited I(Gly) reversibly in a concentration-dependent manner. It shifted the concentration-response relationship to the right without altering the maximum response and Hill coefficient of the I(Gl...

Highly fluorescent g-C3N4 nanosheets were facilely fabricated by exfoliating bulk g-C3N4 under ultrasonic irradiation for 1 h. The atomic force microscopy (AFM) image shows that the resultant g-C3N4 nanosheets are ∼6-14 nm thick, and the suspension is stable in air for several weeks. Remarkably, the obtained nanosheets exhibited strong fluorescence with an extremely high quantum yield (QY) up t...

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...

Amorphous polymers are often used for gas separation but have a trade-off between permeability and selectivity. Here, the effect of chemical composition temperature on solubility in well-ordered LC polymer membranes is investigated. Membranes with various compositions monomethacrylate (M1) crown ether functionality to enhance CO2 smectic diacrylate (M2) cross-linker were fabricated, while all h...

a quantitative analysis method for fudosteine in human serum by high-performance liquid chromatography-electrospray ionization tandem mass spectrometry (hplc-esi/ms/ms) was established, which shows high sensitivity and selectivity. the mobile phase composition was 75% 20 mm acetic acid and 25% acetonitril, which was pumped at a flow rate of 0.40 ml/min. the overall chromatographic run time was ...

A modeling approach has been developed for materials based on organic semiconductorsand their physicochemical and gas-sensitive properties. For modeling, such methods as multiplelinear non-linear regression, neural networks were used. As an input vector theproperties of metal-containing polyacrylonitrile are the parameters technological process offorming materials: mass fraction alloying compon...

Random coe cient regression models have been applied in di erent elds and they constitute a unifying setup for many statistical problems. The nonparametric study of this model started with Beran and Hall (1992) and it has become a fruitful framework. In this paper we propose and study statistics for testing a basic hypothesis concerning this model: the constancy of coe cients. The asymptotic be...