Taking loess as the research object, influence of cement content on mechanical properties was studied. Firstly, basic physical parameters were obtained through laboratory index test, and improved by using Portland cement. Secondly, under different incorporation ratios (3%, 5%, 7%, 9%), heavy compaction test liquid-plastic limit carried out respectively to obtain cement-improved loess. Finally, ...

A detailed computational study has been performed to assess the possibility of applying polydimethylsiloxane (PDMS) and its structurally similar derivatives as semi-permeable membranes filter two naphthenic, cyclohexanecarboxylic 2-norbornaneacetic, acids using a portable mass spectrometer. Several state-of-the-art levels theory have used understand interactions between PDMS naphthenic acids, w...

OBJECTIVE To investigate urinary fractions of free and peptide forms of collagen crosslinks in patients with rheumatoid arthritis (n=50), osteoarthrosis (n=38), psoriatic arthritis (n=38) and in healthy volunteers (33 adults, 17 children). METHODS Pyridinoline (PYD) and deoxypyridinoline (DPD) were measured by high performance liquid chromatography. RESULTS In rheumatoid arthritis (RA) all ...

Peptide mapping of underivatized tryptic digests of bovine and chick intestinal calcium-binding proteins has been accomplished by high performance liquid chromatography (HPLC). High precision analysis of nanomolar quantities of peptides were achieved in less than 1 h (recycle time). Peak resolution and definition are superior compared to conventional techniques and recoveries of both small (4-r...

Abstract Liquid–liquid phase separation underlies the membrane-less compartmentalization of cells. Intrinsically disordered low-complexity domains (LCDs) often mediate separation, but how their behavior is modulated by folded incompletely understood. Here, we interrogate interplay between and RNA-binding protein hnRNPA1. The LCD hnRNPA1 sufficient for mediating in vitro. However, show that RRM ...

apotransferrin (apo tf)  in 0.1 m n-(2hydroxyethyl)piperazine-n2-ethanesulfanic acid at 25 ˚c  and ph 7.4 has been titrated with acidic solution of tb3+. the binding of tb3+ at  the two specific metal-binding sites of transferrin was followed from the changes in the difference uv spectra at 245 nm. the molar absorptivity per binding site for tb3+-tf is 22,500 ± 1000 m-1cm-1. to determine the tb...

The interaction of 16 ring-substituted phenols and anilines with the corn protein zein was studied by reversed-phase high-performance liquid chromatography by preparing silica- and alumina-based stationary phases coated with various concentrations of zein. The relationship between the strength of interaction and the physicochemical parameters of solutes was elucidated by principal component ana...

Rab5 is an important small GTPase involved in endocytosis and membrane trafficking. Rab5-binding proteins can be identified using Rab5 affinity chromatography with nonhydrolyzable GTP analogues such as GTPgammaS or GppNHp. However, this method requires significant quantities of the GTP analogue and is thus time-consuming and expensive. In the present report we show a faster and more cost-effect...

Surfactants are often added to water increase the wetting of hydrophobic surfaces. We previously showed that most surfactant solutions behave identically simple liquids with same surface tension, indicating surfactants do not change wettability solid itself. Here, we show superspreading Silwet results in a systematically higher contact angle on than other comparable liquid-vapor tension. also e...