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Evidence suggested that mindfulness-based techniques have been effective in increasing psychological well-being. The present meta-analytic study aimed to examine the effects of mindfulness-based programmes on anxiety, and depression in cancer infected and survivors. Improvement in mindfulness across groups were also studied. Using various search items (e.g., MBCT, MBSR, Cancer). A systematic search of the electronic databases, reference list, and journal content lists were conducted from June 2011 to June 2020. Fourteen randomized controlled trials (N = 1831) evaluating effect of mindfulness in reducing anxiety and depression in cancer, measuring at pre-and-post interventions were included in this study. Random effects model was utilized for effect-size calculation. Interventions were between 5-8 weeks, with majority of participants been female (98.79%). Significant medium effect was observed for anxiety (g = 0.34) and depression (g = 0.32) with moderate heterogeneity and higher for mindfulness (g = 1.061) with high heterogeneity. Publication bias was not observed. Mindfulness has substantial effects in reducing anxiety and depression in cancer infected and survivors.

The strategy and technique exploited in the synthesis of nanostructure materials have an explicit effect on the nucleation, growth, and properties of product materials. Nanoparticles of zinc sulfide (ZnS) have been synthesized by new infrared radiation (IR) assisted and Stokes' law based controlled bottom-up approach without using any capping agent and stirring. IR has been used for heating the reaction surface designed in accordance with the well-known Stokes law for a free body falling in a quiescent fluid for the synthesis of ZnS nanoparticles. The desired concentration of aqueous solutions of zinc nitrate (Zn(NO 3 ) 2 ⋅4H 2 O) and thioacetamide (CH 3 CSNH 2 ) was reacted in a controlled manner by IR radiation heating at the reaction area (top layer of reactants solution) of the solution which results in the formation of ZnS nanoparticles at ambient conditions following Stokes' law for a free body falling in a quiescent fluid. The phase, crystal structure, and particle size of as-synthesized nanoparticles were studied by X-ray diffraction (XRD). The optical properties of as-synthesized ZnS nanoparticles were studied by means of optical absorption spectroscopic measurements. The optical energy band gap and the nature of transition have been studied using the well-known Tauc relation with the help of absorption spectra of as-synthesized ZnS nanoparticles.

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