The influences of controlled atmosphere (CA) and storage time on ultrastructural degradation of chelate-soluble pectin (CSP) in yellow peaches (Prunus persica L. Batsch.) were investigated. Freshly harvested peaches were stored at 2 ◦C under CA (CA1, 2% O2 + 10% CO2; CA2, 5% O + 5% CO ) or regular atmosphere conditions. Qualitative and quantitative aspects of CSP polymers were studied by atomic...

Many different strategies of high performance liquid chromatographic method development are used today. This review describes a strategy for the systematic development of High performance liquid chromatographic (HPLC) methods. HPLC is an analytical tool which is able to detect, separate and quantify the drug, its various impurities and drug related degradants that can form on synthesis or stora...

In OA, the concentration and the molecular weight of HA are reduced, resulting in synovial fluid of lower elasticity and viscosity: diluitional effects, reduced hyaluronan synthesis and free radical degradation are the factors which contribute to the lower concentrations of HA. When the visco elasticity of synovial fluid is reduced, the transmission of mechanical force to cartilage may increase...

This month: protein-complex dynamics (Tan), how noise promotes cell survival (Goulian), multiplex cell-surface-protein detection (Wells), single-cell sequencing (Klein/Socolovsky, Ye), social networks of honeybees (Robinson), new synthetic devices (Liu, Cai), and controlling segmentation clock dynamics (Aulehla).

Introduction Large-scale and high-intensity marine resource exploitation activities have brought irreversible influences on the environment ecosystem. As an important index to evaluate state of development, environmental carrying capacity (MRECC) is vital sustainable development sea areas. Methods In this study, evaluation system was established based PS-DR-DP (Pressure Support-Destructiveness ...

in the present study, we investigated the effect of a new anticancer pd(ii) complex, 1,10-phenanthroline-n-butyl dithiocarbamato pd(ii) nitrate, on the heme releasing from human hemoglobin (hb) as well as alterations in the structure and function of hb using different spectroscopic methods of uv-vis, fluorescence and circular dichroism (cd)at two temperatures of 25 and 37 °c. fluorescence data ...

In this study, a wheel-rail transient rolling contact model capable of accounting for the nonlinear displacement-force properties hanging sleepers is proposed. The sleeper status affected by rail irregularities an input analysis behavior and related degradation in terms plastic deformation fatigue. results indicate that severity significantly geometric characteristics relative position with res...

OBJECTIVE The involvement of Calpain-I mediated proteolysis has been implicated in myofibrillar dysfunction of reperfused myocardium following ischemia (stunning). This study addresses the question whether ultrastructural alterations might be responsible for the depressed contractility. METHODS Mechanical properties and protein composition of isolated myocytes after Calpain-I exposure (1.25 U...

nano-cus powders were synthesized with chemical solution method. xrd and sem and spectrophotometry were used for characterization of the cus powders. xrd analysis indicated that tetragonal cus was the main phase with particle size of 16.2nm and little cu2s phase was present. scanning electron microscopy (sem) analysis revealed that powder was plate like and had very little aspect ratio in morph...

mesoporous tio2 has been prepared using a nonionic block copolymer (pluronic p-123) as structure-directing agent with sol-gel method. characterization of the product was carried out by means of x-ray diffraction (xrd), scanning electron microscopy (sem), thermogravimetry-differential scanning calorimetry (tg-dsc), nitrogen sorption isotherms, and uv-vis absorption spectroscopy. these analyses s...