No abstract

The natural organic matter and the iron and manganese oxides are potential adsorbing agents of heavy metals in sediments and create a sink for them to control their bioavailability and mobility in the aquatic environment. The salinity and pH of the surrounding water highly affect the fixation of heavy metals on the river sediments. The adsorption of copper, lead, and zinc ions in the Brahmaputra river sediment is analyzed by batch techniques. The parameters controlling these metal ions adsorption are solution pH, contact time, adsorbent amount, and adsorbate concentration. The equilibrium adsorption capacities of the sediment particles of the various sizes (< 53, 53-73, and 74-149 μm) are measured for copper, lead, and zinc ions and extrapolated using linear Freundlich and Langmuir isotherms. The results provide strong evidence to support the hypothesis of adsorption mechanism.

Abstract:The mer-trichloro dimethylsulphoxide-S-(1,10-phenanthroline) ruthenium (III) ([Ru(phen)

No abstract

Bertrand Russell, while expressing his deep concern for a prevailing negligence about an intrinsic aspect of science, which he terms culture, opines that culture is not to be understood as something divorced from science. His demarcation of old culture from young culture; and his claim that it is the young culture which is responsible for valuing science for its usefulness rather than its intrinsic aspect, i.e., prepares the stage for arguing in favour of endorsement of cultural intrinsicality of science. The paper argues that viewed from Russell’s perspective, understanding culture as something unrelated to science will be a mistake, because it will carry a message to the mankind which is detrimental to the entire fabric of social cohesion. The paper focuses on the inculcation of scientific habit, an intrinsic aspect of science, as culture. While doing so, the paper intends to stress on the point that the scientific habit, which is linked to the Russellian method of analysis, common to both science and philosophy, plays a significant role in enabling one to focus on the cultural aspect of science. Analysis, in the province of philosophy, is used by Russell primarily to analyze language.