The spinnability of a spinning solution using DMSO as the solvent was investigated for dry-jet wet spinning of PAN precursor fiber. Among many variables responsible for spinnability, the coagulating conditions, the air gap length, the nonsolvent content in spinning solution, and the spinning temperature have been viewed as the key factors, and they were investigated in this study. It was found ...

Vulnerability curves (VCs) measure the ability of vessels to retain metastable water without embolisms that lower the hydraulic conductivity of stems. The fastest method of measuring VCs is the centrifuge technique and the Cochard cavitron is a method that allows measurement of hydraulic conductivity of stems while they are spinning. This paper describes the pattern of embolism that results aft...

Zinc oxide nanofibers were prepared using the polymer Zinc acetate solution, by a modest programmable microcontroller aided electro spinning technique. The prepared and calcinated nanofibers were characterized using standard analytical methods. The hexagonal wurtzite structure for calcinated nanofibers of diameters ranging between 10-13 nm were inferred from structural analysis. The Field Emiss...

Exploration of asteroids and small-bodies can provide valuable insight into the origins of the solar system, into the origins of Earth and the origins of the building blocks of life. However, the low-gravity and unknown surface conditions of asteroids presents a daunting challenge for surface exploration, manipulation and for resource processing. This has resulted in the loss of several landers...

Pd doped WO3 fibers were synthesized by electro-spinning. The sol gel method was employed to prepare peroxopolytungstic acid (P-PTA). Palladium chloride and Polyvinyl pyrrolidone (PVP) was dissolved in the sol Pd:WO3 = 10% molar ratio. The prepared sol was loaded into a syringe connected to a high voltage of 18.3 kV and electrospun fibers were collected on the alumina substrates. Scanning elect...

Experimental Section Cross-polarised optical microscopy was performed using an Olympus BH-2 microscope coupled to a Leica DM-IRB digital camera. The gel samples were sealed two glass plates using vacuum grease to enable aging observations. Small angle X-ray scattering (SAXS) experiments were performed using a rotating anode with a copper target (λ = 1.54 Å). The distance between the sample and ...

The air filters with high Bacterial Filtration Efficiency (BFE) should help protect people effectively against various air borne particles including bacteria. In general, antibacterial properties of nanofiber membranes are tested by the conventional agar diffusion test where the small piece of test specimen is placed on agar plate and inoculated with test microorganism and incubated. This metho...

• Platelet-rich plasma therapy (PRP) involves drawing the patient's blood and spinning it in a centrifuge to separate out the platelets. The layer of platelet-rich plasma is then injected into the patient's pathological body part. The platelets release growth factors to promote healing. It is an office procedure that lasts less than an hour. • The procedure has gained fame because of use on pro...

Air drag on yarn and package surfaces affects yarn tension, which in turn affects energy consumption and ends-down in ring spinning. This paper investigates the effects of yarn hairiness on air drag in ring spinning. Theoretical models of skin friction coefficient on the surface of rotating yarn packages were developed. The predicted results were verified with experimental data obtained from co...