book through his lucid presentation of much technical data. The discussion of corrosive qualities of water is unusually thorough and explicit as is his discussion of the sanitary significance of impurities in water and on bacterial decomposition of organic matter in water. What might be considered to be a deficiency is the rather limited discussion of waterborne diseases. The liberal footnotes ...

tlc screening and evaluation of antioxidant, antibacterial activity of onopordon macrocephalum by bioautography methodonopordon known as scotch thistle is a medicinal plant of the asteraceae family that is widely distributed in europe and asia, also it has many valuable medicinal properties as hypotensive and antitumor. thin layer chromatography (tlc) is wildly used in natural product extract a...

Owing amongst other to its high electron mobility, fullerene C70, has been widely used as an electron transporting layer in organic solar cells. In this research, we report the use of C70 thin films as electron transport layers of planar perovskite solar cells (PSCs) using a conventional device structure. The thickness of the C70 layer has been optimized to achieve the best efficiency of 12%. I...

Baur FJ (1973) J. Am. Oil. Chem. Soc. 50: 85. Combes RD and Haveland-Smith RB (1982) Mutat. Res. 98: 101. Grendy TH (1991) Intense Sweeteners for Food Industry: An Overview. Trends in Food Sci. Tech., 2: 1. Klein H and Leubolt R (1993) J. Chromatogr. 640: 259. Kurihara Y and Nirasawa S (1994) Sweet, antisweet and sweetness-inducing substances. Trends in Food Sci. Tech. 5: 37. Macrae R (1982) HP...

Nanofiltration has exhibited broad application prospects in the field of precise separation attributed to its unique sieving performance for ions and small molecules, high permeation flux low energy consumption. However, it remains a great challenge current nanofiltration membranes (NFMs) improve permeability while maintaining rejection divalent (or multivalent) ions. In this work, we design fa...

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Garrido JL and Zapata M (1996) Ion-pair reversed-phase high-performance liquid chromatography of algal chlorophylls. Journal of Chromatography A 738: 285. Hodgson DA, Wright SW and Davies N (1997) Mass spectrometry and reverse phase HPLC techniques for the identiRcation of degraded fossil pigments in lake sediments and their application in palaeolimnology. Journal of Paleolimnology 18: 335. Jef...

499: 177. Lindner H, Sarg B and Helliger W (1997) Application of hydrophilic-interaction liquid chromatography to the separation of phosphorylated H1 histones. Journal of Chromatography 728: 55. Mant CT and Hodges RS (eds) (1991) High-performance Liquid Chromatography of Peptides and Proteins: Separation, Analysis, and Conformation. Boca Raton: CRC Press. Mant CT and Hodges RS (1996) Analysis o...

Composite membranes composed of highly conductive and selective layer-by-layer (LbL) films and electrospun fiber mats were fabricated and characterized for mechanical strength and electrochemical selectivity. The LbL component consists of a proton-conducting, methanol-blocking poly(diallyl dimethyl ammonium chloride)/sulfonated poly(2,6-dimethyl-1,4-phenylene oxide) (PDAC/sPPO) thin film. The e...

for the characteristics of horizontal fractures in shallow low-permeability oil layers after hydraulic fracturing in multilayer reservoirs, horizontal fractures are taken equivalent to an elliptical cylinder with the reservoir thickness using the equivalent permeability model; then, upon the elliptic seepage theory, the seepage field which has led by a vertical well with horizontal fractures is...