01617nas a2200205   4500008004100000022001400041245010700055210006900162260007100231300001600302490000800318520083300326100002101159700002401180700002201204700002201226700002201248700002001270856012101290       2014                        eng d  a0002-786300aHomogeneous photochemical water oxidation by biuret-modified Fe-TAML: evidence of Fe-V(O) intermediate0 aHomogeneous photochemical water oxidation by biuretmodified FeTA  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcSEP  a12273-122820 v1363 a<p>{Water splitting, leading to hydrogen and oxygen in a process that mimics natural photosynthesis, is extremely important for devising a sustainable solar energy conversion system. Development of earth-abundant, transition metal-based catalysts that mimic the oxygen-evolving complex of photosystem II, which is involved in oxidation of water to O-2 during natural photosynthesis, represents a major challenge. Further, understanding the exact mechanism, including elucidation of the role of active metal-oxo intermediates during water oxidation (WO), is critical to the development of more efficient catalysts. Herein, we report Fe-III complexes of biuret-modified tetra-amidomacrocyclic ligands (Fe-TAML; 1a and 1b) that catalyze fast, homogeneous, photochemical WO to give OD with moderate efficiency (maximum TON = 220</p>1 aPanda, Chakadola1 aDebgupta, Joyashish1 aDiaz, David, Diaz1 aSingh, Kundan, K.1 aGupta, Sayam, Sen1 aDhar, Basab, B.  uhttp://library.ncl.res.in/content/homogeneous-photochemical-water-oxidation-biuret-modified-fe-taml-evidence-fe-vo-001731nas a2200181   4500008004100000245014300041210006900184260000800253300001800261490000600279520102900285100002701314700002001341700002101361700002201382700001701404856012801421       2017                        eng d00aVitro study of novel microparticle based silk fibroin scaffold with osteoblast-like cells for load-bearing osteo-regenerative applications0 aVitro study of novel microparticle based silk fibroin scaffold w  cMAY  a26551 - 265580 v73 aSilk Fibroin (SF) is today considered to be one of the most favorable materials for bone tissue engineering. We have prepared novel SF microparticle based 3D scaffolds, with appropriate pore size, pore interconnectivity and porosity, excellent mechanical properties and tunable bioresorption, while retaining the inherent biocompatibility of SF. These properties make them ideal candidates for osteoregenerative applications. Here, we report the in vitro cell viability, cell adhesion and proliferation with osetoblastic differentiation of MG 63 osteoblast-like cell line on these scaffolds. In addition, we have also modified the surface of these scaffolds using collagen type I and chitosan biopolymers. Our results show that although the SF scaffold does support in vitro cell attachment, proliferation and differentiation, this performance can be further enhanced using the surface coating approach. Also, the ALP activity and bone mineralization was found to be particularly superior in the chitosan modified scaffolds.1 aParekh, Nimisha, Anant1 aHushye, Chandni1 aWarunkar, Saniya1 aGupta, Sayam, Sen1 aNisal, Anuya  uhttp://library.ncl.res.in/content/vitro-study-novel-microparticle-based-silk-fibroin-scaffold-osteoblast-cells-load-bearing