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Jagannath, Jagannath Biswas,Kim, Hyun,Yim, Chai-Suk,Cho, Jungh-Wan,Kim, Geon-Joong,Choe, Soon-Ja,Lee, Dai-Soo The Polymer Society of Korea 2004 Macromolecular Research Vol.12 No.5
We have studied the effects that inorganic zeolite powder have on structurally different copolymer [poly(propylene-co-ethylene)] and terpolymer [poly(propylene-co-ethylene-co-l-butene)] systems and the possibility of preparing suitable porous composite films. The impact strength and yield stress of the composites did not improve upon any further loading of zeolite, but the modulus increased gradually with respect to the filler loading. The experimental modulus of each of the two systems was compared with theoretical models. We performed a morphological study of the filler mixing efficiency and image analysis. The number-, weight-, and z-average air hole diameters were compared with respect to the draw ratio as well as the zeolite loading. The experimental results suggest that these two matrices can provide a new choice for preparing future multiphase polymeric porous films by stretching them unidirectionally. In particular, we suggest that a 40 wt% zeolite loading at a draw ratio of 4 is useful for porous film applications.
The synthesis and applications of TiO2 nanoparticles derived from phytochemical sources
Jagannath Roy 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.106 No.-
Nano sized materials have gathered significant attention during the last few decades due to their uniquechemical, physical, electrical, optical and mechanical properties. Titanium dioxide (TiO2) is non-toxic andhas good corrosion resistance, high chemical and thermal stability. TiO2 has a wide range of applicationsincluding as photocatalysts, in solar cells, self-cleaning surfaces, wastewater treatment and as an antimicrobialagent. A number of methods have been implemented for the synthesis of TiO2 nanoparticles andamong these, so-called ‘green’ approaches, for example those that employ renewable resources and/orrequire low energy input, are attractive because they can be cost-effective, less hazardous and environmentallysustainable. This review explores recent advances in the synthesis of TiO2 nanoparticles derivedfrom phytochemical sources and benchmarks their performance in a range of applications against nano-TiO2 produced by more conventional methods.
Scheduled Tribes and the Politics of Inclusion in India
Jagannath Ambagudia 한국사회복지학회 2011 Asian Social Work and Policy Review Vol.5 No.1
As the identification of Scheduled Tribes (STs) is left to the state government – which bases decisionson political considerations rather than the established criteria for identification of STs – thereare bound to be emerging demands for inclusion in the list of STs. Meanwhile, in the name ofextending welfare projects and affirmative action to tribal people, the state is legitimizing its controlover tribal resources. For STs, the important issue is not integration into mainstream society, nordevelopment by any outside agency, but recognition as peoples in their own right, treatment asequal partners, and control over their lands and livelihoods and, through this, the ability to developthemselves.