Containing a pandemic with public actions and public trust: the Kerala story.

We study the Covid pandemic in the Indian state of Kerala, and document the state's remarkable success in containing the pandemic's first wave. By identifying Kerala's initial conditions when it was hit by the pandemic, and different components of the state's Covid policy, we conclude: While being subject to resource constraints faced by an Indian state located in a federal structure, Kerala contained its first Covid wave by preemptively formulating a comprehensive set of government actions that were supported and complemented by the state's citizens. This was achieved by leveraging and reinforcing the citizen's in the state.

Extraction of metal ions using chemically modified silica gel: a PIXE analysis.

Organic ligand with carboxyhydrazide functional group was immobilised on the surface of silica gel and the metal binding capacity of the ligand-embedded silica was investigated. The functional group was covalently bonded to the silica matrix through a spacer of methylene groups by sequential reactions of silica gel with dibromobutane, malonic ester and hydrazine in different media. Surface area value of the modified silica was determined.

Synthesis of CdS nanoparticles in colloidal state and its possible interaction with tyrosine.

The basic objective is to develop a simpler method of preparation of the colloidal CdS nanoparticles with greater stability and to study interaction with tyrosine molecules. Average size of the particles in the colloid is found to be about 3 nm as probed by transmission electron microscopy (TEM) and dynamic light scattering (DLS) measurements. Effect of both sulfide enriched CdS as well as Cd(2+) enriched CdS on tyrosine is investigated both through absorbance and emission spectroscopy.