The origin and scaling of the current measured during steady electrospinning of polymer solutions in organic solvents is considered. It is demonstrated that, for a specified electric field strength, E, flow rate, Q, and conductivity, K, the total measured current scales as ITOTAL ~EQ 0.5 K 0.4 , for a wide variety of polymer solutions with different electrical conductivities. The exponent of th...

The polymer poly(2-ethyl-2-oxazoline), sold under the trade name Aquazol, is gaining appeal for many conservators due to its excellent adhesive qualities and wide-ranging solubility in polar organic solvents including water. This chemically stable polymer is being used as an adhesive, clear coating, and consolidant. During the last year, substitutions of Aquazol-solvent solutions for hide glue ...

Agrochemicals, veterinary drugs, antibiotics and improved feeds can increase the food supply while minimising production costs in various livestock production systems around the world. However, these days, quality-conscious consumers are increasingly seeking environmentally safe, chemical-residue-free healthy foods, along with product traceability and a high standard of animal welfare, which or...

A series of uranyl(VI) dihalide complexes UO2X2L2 (X = Cl, Br) supported by organic amide ligands (L = R'C(O)NR2; R' = i-Pr; R = i-Pr, i-Bu, s-Bu) offers the versatile combination of facile synthesis using benchtop methods, air-stable crystalline solids obtained in high yield, high solubility in common organic solvents and tunable steric/electronic properties.

PDMS microfluidic devices whose whole inner surfaces are covered with PTFE (polytetrafluoroethylene) are described. The major problems of PDMS fluidic devices in practical use, are surface degradation with organic solvents and unexpected absorption of chemical materials. In order to overcome these problems, spin/dip-coated perfluoro amorphous polymer is used to form the passivation PTFE layer o...

Over the past few decades, consumers have become more concerned about health and nutrition, which is displayed by an increased demand for organic foods. Once considered a niche product, organic food has become more affordable for consumers through its availability in conventional supermarkets. In 2010, organic food and beverages showed a 7.7% increase in annual sales compared to 2009 sales, wit...

BACKGROUND Enzymes have found extensive and growing application in the field of chemical organic synthesis and resolution of chiral intermediates. In order to stabilise the enzymes and to facilitate their recovery and recycle, they are frequently immobilised. However, immobilisation onto solid supports greatly reduces the volumetric and specific activity of the biocatalysts. An alternative is t...

this study investigated maturation and stability levels during composting of quercus robur (qr) woodchips mixed with different nitrogen sources (horse manure, hm and lake mud, lm) for potential agronomic utilisation. the woodchips were mixed with hm and lm, respectively, at mixing ratios of 1qr:2hm or 1qr:2lm. the experiment was conducted in a greenhouse over 100 days. during composting, organi...

this study investigated maturation and stability levels during composting of quercus robur (qr) woodchips mixed with different nitrogen sources (horse manure, hm and lake mud, lm) for potential agronomic utilisation. the woodchips were mixed with hm and lm, respectively, at mixing ratios of 1qr:2hm or 1qr:2lm. the experiment was conducted in a greenhouse over 100 days. during composting, organ...

in this work firstly mgfe2o4 nanoparticles were synthesized via a microwave-assisted method. the product was calcinated at 900 ºc for 2h. at the second step zinc oxide shell was synthesized on the ferrite under ultrasonic waves. properties of the product were examined by x-ray diffraction pattern (xrd), scanning electron microscope (sem) and fourier transform infrared (ft-ir) spectroscopy. vibr...