Physical and Ballistic Characterization of Aluminum-Loaded Paraffin Hybrid Rocket Fuels
The physical, thermal and ballistic performance of paraffin-based fuel loaded with aluminum (Al) additive was investigated. The paraffin-based fuels were prepared using varying weight percentages of polyethylene (PE) as a binder and Al as an energetic additive. The mechanical tests showed significant improvement in compression strength and elastic modulus with the addition of PE and Al to pure paraffin wax. The ignition performance, combustion characteristics, and exothermic behavior of these paraffin-based fuels were studied through Thermogravimetry/DerivativeThermoGravimetry/Differential Scanning Calorimetry (TG/DTG/DSC) experiments. The addition of PE increased the ignition and binder temperature, whereas the incorporation of a metallic additive lowered the decomposition temperature. The heat of combustion of paraffin-based fuel samples increased as the Al loading content was increased from 5 wt % to 25 wt %. The ignition and combustion indices were calculated to evaluate the ignitability and combustio...
We recently generalized the formerly alignment-dependent multivariate image analysis applied to quantitative structure–activity relationships (MIA-QSAR) method through the application of the discrete Fourier transform (DFT), allowing for its application to noncongruent and structurally dive ... more
Poly-ADP-ribosylation (PARylation) is a protein posttranslational modification (PTM) that is critically involved in many biological processes that are linked to cell stress responses. It is catalyzed by a class of enzymes known as poly-ADP-ribose polymerases (PARPs). In particular, PARP1 is ... more
This review focuses on the type A cytochrome c oxidases (CcO), which are found in all mitochondria and also in several aerobic bacteria. CcO catalyzes the respiratory reduction of dioxygen (O2) to water by an intriguing mechanism, the details of which are fairly well understood today as a r ... more
Rohm and Haas Powder Coatings is delighted to announce that its Reading, Pennsylvania, facility is the first site in the world to receive the RCMS® Site Certification awarded by the American Chemical Council (ACC).
When Raj Gupta, Chairman and CEO of Rohm and Haas Company, became Chairman ... more