2014: Recent submissions

Now showing items 161-180 of 236

Poly(vinylidene fluoride)–La0.5Sr0.5CoO3-delta composites: the influence of LSCO particle size on the structure and dielectric properties

Deepa, K S; Shaiju, P; Sebastian, M T; Bhoje Gowd, E; Jose James (Royal Society of Chemistry, 2014)

Dielectric composites composed of poly(vinylidene fluoride) (PVDF) and La0.5Sr0.5CoO3-delta (LSCO) with high permittivity, low loss and high breakdown strength have been developed. The effects of particle size of LSCO (fine ...
SmFeAsO superconductor with preferred crystallographic orientation and enhanced critical current density

Anooja, J B; Aswathy, P M; Neson Varghese; Aloysius, R P; Syamaprasad, U (American Ceramic Society, 2014)

The effect of combined substitution of Sm3+ and O2− with Ca2+ and F−, respectively, on the structural and superconducting properties of SmFeAsO system is investigated. It is observed that the binary doping using CaF2 causes ...
Tunable white-light emission from mixed lanthanide (Eu3+, Gd3+, Tb3+) coordination polymers derived from 4-(dipyridin-2-yl)- aminobenzoate

Ramya, A R; Sunil Varughese; Reddy, M L P (Royal Society of Chemistry, 2014)

Herein, we have developed a series of isostructural mixed Ln3+-4-(dipyridin-2-yl)aminobenzoate coordination polymers [Ln3+ = Eu3+ (1), Tb3+ (2), and Gd3+ (3)], and characterized and investigated their photophysical properties. ...
A bibliometric evaluation of research on the monsoon

Gangan Prathap (DESIDOC, 2014)

With concerns about climate change and its impact on the monsoon cycle over South Asia and its ramifications elsewhere on the globe, there has been renewed interest in the science behind the forces that drive the annual ...
Temperature dependent magnetization reversal of exchange biased magnetic vortices in IrMn/Fe microcaps

Senoy Thomas; Nissen, D; Albrecht, M (American Institute of Physics, 2014)

The authors investigated the magnetization reversal of vortex structures in Fe as well as in IrMn/Fe magnetic caps at elevated temperatures up to 450 K. The caps were formed by film deposition onto dense arrays of ...
Charge disproportionation and magnetoresistivity in a double perovskite with alternate Fe4+(d4) and Mn4+(d3) layers

Subodh, G; Tassel, C; Hayashi, N; Goto, Y; Bouilly, G; Yajima, T; Kobayashi, Y; Kageyama, H (Wiley, 2014)

An oxygen-stoichiometric, B-site-ordered perovskite Ca2Fe1.1Mn0.9O6 (CFMO) with alternate stacking of Fe and Mn layers was obtained through topochemical oxidation of the corresponding brownmillerite phase under high ...
Bioethanol production from dilute acid pretreated Indian bamboo variety (Dendrocalamus sp.) by separate hydrolysis and fermentation

Sindhu, R; Kuttiraja, M; Binod, P; Rajeev K Sukumaran; Pandey, A (Elsevier, 2014)

Bioethanol from lignocellulosic biomass can be utilized for clean and renewable energy production. Bamboo (BM) was used as a feed stock for the production of bioethanol after dilute acid pretreatment and enzymatic ...
Bulk photovoltaic effect in an organic polar crystal

Ratheesh, K V; Meskers, S C J; Abdul Rahim, M; Suresh Das (Royal Society of Chemistry, 2014)

Organic polar crystals from the donor–acceptor substituted 1,4-diphenybutadiene 1 can generate a short-circuit photocurrent and a photovoltage upon illumination with near UV light. The photocurrent and photovoltage are ...
Rhodium(III)-catalyzed C-H activation of phenylazoles toward C-N bond cleavage of diazabicyclic olefins: A facile access to mono- and biscyclopentenyl-functionalized aza-heteroaromatics

Praveen, P; Aparna, P S; Jijy, E; Santhini, P V; Sunil Varughese; Radhakrishnan, K V (Georg Thieme Verlag, 2014)

A [RhCl2Cp*](2)-catalyzed stereoselective C-N bond cleavage of diazabicyclic olefins via C-H activation of phenylazoles in the presence of an acetate source is described. The developed method provides an easy access to ...
In vitro antibacterial screening of six proline-based cyclic dipeptides in combination with beta-lactam antibiotics against medically important bacteria

Nishanth Kumar, S; Ravi S Lankalapalli; Dileep Kumar, B S (Springer, 2014)

The in vitro synergistic antibacterial activity of six proline-based cyclic dipeptides [cyclo(D-Pro-L-Leu), cyclo(L-Pro-L-Met), cyclo(D-Pro-L-Phe), cyclo(L-Pro-L-Phe), cyclo(L-Pro-L-Tyr), and cyclo(L-Pro-D-Tyr)] in combination ...
A fluorescent molecular probe for the identification of zinc and cadmium salts by excited state charge transfer modulation

Divya, K P; Savithri, S; Ajayaghosh, A (Royal Society of Chemistry, 2014)

A fluorescent probe for the identification of a given metal salt is not known. Herein we present a new fluorescent probe 1 for the identification of different zinc and cadmium salts by exploiting the effect of the charge ...
Exploring anagostic interactions in 5,15-porphodimethene metal complexes

Holaday, M G D; Tarafdar, G; Arun Kumar; Reddy, M L P; Srinivasan, A (Royal Society of Chemistry, 2014)

Using a metal templating strategy, 5,15-porphodimethene metal complexes were synthesized and their structure confirmed by single crystal X-ray analysis. The anagostic interaction causes distortion, while the hydrogen bonding ...
Cyclotriphosphazene appended porphyrins and fulleropyrrolidine complexes as supramolecular multiple photosynthetic reaction centers: steady and excited states photophysical investigation

Vishnu, S N; Pareek, Y; Venugopal, K; Ravikanth, M; Ajayaghosh, A (Royal Society of Chemistry, 2014)

New multiple photosynthetic reaction centers were constructed from cyclophosphazene decorated multiporphyrin chromophores and a fulleropyrrolidine having a pyridine ligand (FPY). The excited state electron transfer in the ...
Protective effect of Boerhaavia diffusa L. against mitochondrial dysfunction in angiotensin II induced hypertrophy in H9c2 cardiomyoblast cells

Prathapan, A; Vineetha, V P; Raghu, K G (2014)

Mitochondrial dysfunction plays a critical role in the development of cardiac hypertrophy and heart failure. So mitochondria are emerging as one of the important druggable targets in the management of cardiac hypertrophy ...
Synthesis and characterization of near-infrared absorbing water soluble squaraines and study of their photodynamic effects in DLA live cells

Shafeekh, K M; Soumya, M S; Rahim, M A; Annie Abraham; Suresh Das (Wiley, 2014)

Here, we report the synthesis, photophysical properties and photodynamic effects in DLA live cells of three water soluble squaraine dyes, viz. bisbenzothiazolium squaraine dyes SQMI and SQDI with iodine in one and both ...
Facile isolation of (E)-labda-8(17),12-diene-15,16-dial from Curcuma amada and its conversion to other biologically active compounds

Alan Sheeja, D B; Mangalam S Nair (NISCAIR,CSIR, 2014)

Curcuma amada Roxb. (Zingiberaceae) rhizomes have been found to be a good source of (E)-labda-8(17),12-diene15,16-dial. This has been chemically transformed to other biologically active compounds like aframodial, zerumin ...
Enrichment of omega-3 fatty acids in flax seed oil by alkaline lipase of Aspergillus fumigatus MTCC 9657

Akhila Rajan; Sobankumar, D R; Nair, A J (Inst Food Science & Technology/John Wiley, 2014)

Flax seed oil obtained from the seeds of flax plant(Linum usitatissimum, L.) is an unexploited source which contains omega-3 and omega-6 fatty acids. Flax seed oil is hydrolysed with a novel alkaline lipase from Aspergillus ...
An in vitro study reveals nutraceutical properties of Ananas comosus (L.) Merr. var. Mauritius fruit residue beneficial to diabetes

Riya, M P; Antu, K A; Vinu, T; Chandrakanth, K C; Anilkumar, K S; Raghu, K G (John Wiley, 2014)

Rapid urbanisation and nutritional transition is fuelling the increased global incidence of type 2 diabetes. Pineapple fruit residue was explored for its nutraceutical properties as an alternative or adjunct to currently ...
Antimicrobial photodynamic efficiency of novel cationic porphyrins towards periodontal gram-positive and gram-negative pathogenic bacteria

Prasanth, C S; Suneesh, C K; Albish, K P; Kussovski, V; Mantareva, V; Ramaiah, D; Selvaraj, L; Angelov, I; Avramov, L; Nandakumar, K; Subhash, N (John Wiley, 2014)

The Gram-negative Aggregatibacter actinomycetemcomitans and Fusobacterium nucleatum are major causative agents of aggressive periodontal disease. Due to increase in the number of antibiotic-resistant bacteria, antimicrobial ...
Isolation and identification of alpha-glucosidase and protein glycation inhibitors from stereospermum colais

Priya Rani, M; Raghu, K G; Mangalam S Nair; Padmakumari, K P (Springer, 2014)

Stereospermum colais (family Bignoniaceae) is a well-known pharmacologically potent medicinal plant reported in traditional systems of medicine. Phytochemical investigation of the roots of S. colais resulted in the isolation ...

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