The compound HFC-23 (Trifluoromethane or CHF3), a potent greenhouse gas with a 100-year global warming potential of 11,700, is generated as a by-product during the manufacture of HCFC-22 (chlorodifluoromethane or CHClF2). This paper outlines options and issues for good practice guidance in the national inventory management of HFC-23 emissions from HCFC-22 production. The issues presented are or...

We report the manufacture of novel graphene diode sensors (GDS), which are composed of monolayer graphene on silicon substrates, allowing exposure to liquids and gases. Parameter changes in the diode can be correlated with charge transfer from various adsorbates. The GDS allows for investigation and tuning of extrinsic doping of graphene with great reliability. The demonstrated recovery and lon...

With the rapid development of national economy and increasing demand for energy, acceleration natural gas storage strategies, underground has become more important in China’s oil consumption energy safety. Underground salt cavern many advantages is very suitable peak shaving?However, most rocks China are layered beds, some beds deeply buried. This article introduces history deep technical chall...

Tri-ortho-cresyl phosphate (T.O.C.P.) is an organic phosphorus compound commonly used in industry as a plasticizer, and is so used in the manufacture of lacquers, dopes, synthetic fabrics, and synthetic lignin resin; it is used as a water-proofing agent in textile manufacture. It is said to be an excellent grinding medium for pigments; it is also used in making polyvinyl chloride sheeting and f...

Carbon molecular sieve membranes (CMSMs) are an important alternative for gas separation because of their ease of manufacture, high selectivity due to molecular sieve separation, and high permeance. The integration of separation by membranes and reaction in only one unit lead to a high degree of process integration/intensification, with associated benefits of increased energy, production effici...

The ability to manufacture and manipulate components at the micro-scale is critical to the development of micro systems. This paper presents the technique to manipulate micro/nano parts at the micro/nano-scale using an integrated Focused Ion Beam (FIB) system composed of scanning electron microscope, micro manipulator and gas injection system. Currently the smallest gears manufactured with trad...

Vinyl flooring manufacturers use plasticizers to decrease the viscosity and increase the pliability of vinyl. Several ignitable liquid plasticizers used in the manufacture of vinyl flooring were identified and investigated in this study. Twenty-nine collections from five major vinyl manufacturers, a total of 72 samples, were analyzed using passive headspace concentration in accordance with the ...

AIM To determine whether and in what concentrations the underground waters, stream waters, spring water, and tap water from the Zagreb area contain phthalates -- compounds used as plastic softeners, which have recently been ascribed carcinogenic, mutagenic, and teratogenic effects. METHOD The presence of dimethyl phthalate (DMP), diethyl phthalate (DEP), dibutyl phthalate (DBP), benzylbutyl p...