Based on constitutive relationship of thermal viscoelastic integral-mode and the properties of material, which depend on temperature fluctuation and the effect of phase-transition latent heat, heat-force coupling function and load step character of ANSYS were employed to simulate the hot-plate welding procedure of high-density polyethylene (HDPE) plastic pressure pipe.

The chemical structure and adhesiveness of high-density polyethylene (HDPE), functionalized through ultraviolet irradiation at environmental temperature of 35～70 ℃ in air, and the compatibilization of the ultraviolet irradiated HDPE in HDPE/polyvinyl alcohol (PVA) fiber blends were investigated by elementary analysis, XPS, GPC, gel measurement and mechanical properties test.

Studies on the Lipase Monolayer Film Self-assembly on the Nagatively Charged Poly(ethylene terephthalate) Substrate;

Carbon black(CB) was added into poly(ethylene terephthalate)/polyethylene(PET/PE) blend by discretely feeding technology and fiber grade PET/PE/CB conductive master batch with good combined properties was prepared in reciprocating pulsation extruder.

Uncertainty evaluation of photometric determination of the carboxyl end group in polyester;

Using carbon black as conductive medium and polyester as matrix the carbon black/polyester composite fiber was prepared with the blend method.

The development and current situation of polyester catalysts were introduced.

Methods Neurological and scalp EEGs were performed in 35 patients with posttraumatic epilepsy, who also underwent CT, MRI examination, single photon emission computerized tomography (SPECT) and positron emission tomography (PET) prior to intracranial surgery, with intraoperative monitoring of the cortical EEG.

Objective To localize the epileptic foci with positron emission tomography (PET), and study the principles of target definition and method to determine the optimal range of exposure in radiosurgery for intractable epilepsy.