Ice, for example, requires approximately 80 calories of heat to change each gram to water at its melting point. Because its heat of fusion is relatively high, ice is used in refrigeration. In freezing (the reverse process, i.e., the change from liquid to solid), heat is given off by ...
Chitosan is known as a semicrystalline polymer material with various types of crystal structures (polymorphism). It is a biodegradable, biocompatible, and renewable polymer material with antioxidant properties. Moreover, chitosan is non-toxic for humans and bioactive against selected microorganisms and vir...
More than 99.9% of PCDD/Fs is destroyed by the filter depending on the volatility and oxidative behavior of semi-volatile compounds like PAHs, polychlorinated naphthalene (PCN), or oxy-PAHs in the flue gas (Axegård 2019). Hung et al. (2014) and Xu et al. (2019) reported that ...
Zone C is buried deeper in the β subunit, further away from the interfacial surface. The connection between zones A and B (bridge) also projects towards the interfacial surface and can successfully allocate bridges of different sizes. Zones A and C are not so neatly divided and the ...
The overall orientation of lattice fringes is not good, but there are two main directions. After heating, the number of naphthalenes in the coal samples decreased, while the number of larger aromatic layers increased. The distance between the aromatic layers of the coal sample decreased with an...
Chitooligosaccharide (COS, molecular weight <2000), fucoxanthin (purity of 98%), sodium 8-anilino-1-naphthalenesulfonate (ANS-Na, content ≥97%) and other commonly used chemical reagents were purchased from Macklin Biochemical Technology (Shanghai, China). 2.2. Preparation of genipin crosslinked ...
"turn-on" fluorescence probe towards copper ions based on core-substitued naphthalene diimide. Sensors and Actuators B: Chemical 226, 239–244 (2016). 20. Cotruvo, J. J. A., Aron, A. T., Ramos-Torres, K. M. & Chang, C. J. Synthetic fluorescent probes for studying copper in ...
The reaction course and purity of the synthesized compounds were monitored by TLC using aluminum plates precoated with Silica gel with F254 nm (Merck KGaA, Darmstadt, Germany). Melting points were determined with a B-540 melting point analyzer (Büchi Corporation, New Castle, DE, USA) and ...
Other suitable polyamines comprise the aminoalkyl-substituted aromatic compounds such as, for example, di(aminoethyl) benzene, di(aminomethyl) benzene, tri(aminoethyl) benzene, tri(aminobutyl) naphthalene and the like. Suitable polyamines also include the organo-metallic compounds, such as those having...
Most biopharmaceuticals are developed in liquid dosage forms that are less stable than solid forms. To ensure the stability of biopharmaceuticals, it is cr