The aim of the present work is to enhance the antifouling properties of polypropylene (PP) membrane based on hydrophilicity improvement. Different contents of neat and modified nanodiamond (0.25, 0.50, 0.75 and 1.00 wt.%) were embedded into PP membranes. Nanodiamond nanoparticles were carboxylated by heat treatment method and the presence of carboxyl functional groups on the surface of nanopart...

BACKGROUND Physical function is a crucial factor in the prevention and treatment of health conditions in older adults and is usually measured objectively with physical performance tests and/or physical activity monitoring. OBJECTIVE To examine whether 1) physical performance (PP) and physical activity (PA) constitute separate domains of physical function; 2) differentiation of PA classes is m...

. iiniMne RnmoanVi rrtv*n i icno ur iiib?iv>? ? Baltimore: The Williams and Wilkins Company, 1933. Pp. x plus 207. Price, 5s. (Agents are: Messrs. Bailliere, Tindall and Cox, London.) This book is one volume of a series entitled A century of progressFrom the list at the end of the book it is gathered that this series consists of a collection of small volumes on various technical subjec s, each ...

In the title compound, [Fe(C(5)H(5))(C(15)H(16)NO)], the two cyclo-penta-dienyl (Cp) rings are nearly parallel to each other, forming a dihedral angle of 3.7 (1)°, and adopt a staggered conformation. The amide group is almost perpendicular to the plane of the substituted Cp ring, with a C-N-C-C torsion angle of 101.3 (2)°, and the N and O atoms in the ethanoyl group are coplanar, with a C-N-C-O...

Despite the great potential of graphene as a nanofiller, achieving homogeneous dispersion remains the key challenge for effectively reinforcing polyolefin (such as polyethylene (PE) and polypropylene (PP)) nanocomposites. Therefore, in this research, we report a facile combined in situ polymerization and masterbatch method for fabricating PP/reduced graphene oxide (rGO) nanocomposites. In the p...

A fourth-generation Ziegler-Natta catalyst was prepared to synthesize polypropylene (PP), which was stabilized by in situpolymerization employing lignin as antioxidant. The antioxidant properties of lignin were compared with those of the commercial antioxidant Irganox 1010. The presence of lignin in the reaction medium slightly decreased the catalytic activity of the reaction. The isotacticity ...

Epidemic Free-Base Cocaine Abuse; James F. Jekel, the Lancet, Mar. 1986, pp. 459-462, vol. 1. Cocaine and Other Stimulants; Frank H. Gawin, M.D., vol. 318, No. 18, pp. 1173-1182, New England Journal of Medicine, 1988. Evolving Conceptualizations of Cocaine Dependence; Frank H. Gawin, the Yale Journal of Biology and Medi cine Inc., pp. 123-136, 1988. Abstinence Symptomatology and Psychiatric Dia...

Arterial function may be altered in patients with cirrhosis. We determined compliance of the arterial tree (C(1)) in relation to systemic and splanchnic hemodynamic derangement and clinical variables. C(1) and the stroke volume-pulse pressure index (SV/PP) were significantly higher (+62% and +40%, respectively; P < 0.001) in cirrhotic patients (n = 49) than in control subjects (n = 19), and a c...