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Showing 1 to 12 of 363 entries
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Tuning the physical properties of organic sensitizers by replacing triphenylamine with new donors for dye sensitized solar cells - a theoretical approach.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy

Ramkumar S, Manidurai P.
PMID: 27705847
Spectrochim Acta A Mol Biomol Spectrosc. 2017 Feb 15;173:425-431. doi: 10.1016/j.saa.2016.09.036. Epub 2016 Sep 21.

New donor molecules with low ionization potential have been theoretically designed by replacing the benzene moieties in triphenylamine (TPA) with thiophene as well as furan. The designed new donors also exhibited planar structure, making an angle of 120° around...

Triamide macrocyclic chloride receptors via a one-pot tandem reduction-condensation-cyclization reaction.

Organic & biomolecular chemistry

Behera H, Ramkumar V, Madhavan N.
PMID: 28485420
Org Biomol Chem. 2017 Jun 14;15(23):4937-4940. doi: 10.1039/c7ob00642j.

A pyridine containing triamide macrocycle and its substituted analog have been synthesized in one pot from the corresponding monomer without the use of coupling reagents. The macrocycle can selectively bind chloride ions. The ease of synthesis and chloride-binding properties...

Separation of boron from borated paraffin wax by pyrohydrolysis and alkali extraction methods and its determination using ion chromatography.

Analytical sciences : the international journal of the Japan Society for Analytical Chemistry

Raut VV, Jeyakumar S, Shah DJ, Thakur UK, Tomar BS, Ramakumar KL.
PMID: 25765277
Anal Sci. 2015;31(3):219-23. doi: 10.2116/analsci.31.219.

A method based on the pyrohydrolysis extraction of boron and its quantification with ion chromatography was proposed for paraffin waxes borated with H3BO3 and B4C. The optimum pyrohydrolysis conditions were identified. Wax samples were mixed with U3O8, which prevents...

Aluminum Substituted Cobalt Ferrite (Co-Al-Fe) Nano Adsorbent for Arsenic Adsorption in Aqueous Systems and Detailed Redox Behavior Study with XPS.

ACS applied materials & interfaces

Penke YK, Anantharaman G, Ramkumar J, Kar KK.
PMID: 28257174
ACS Appl Mater Interfaces. 2017 Apr 05;9(13):11587-11598. doi: 10.1021/acsami.6b16414. Epub 2017 Mar 21.

Arsenic [As(III) and As(V)] adsorption on aluminum substituted cobalt ferrite (Co-Al-Fe) ternary metal oxide adsorbent is reported by means of qualitative and quantitative spectroscopy tools. IR and Raman active signals were observed around 810-920 cm

Landscape response to progressive tectonic and climatic forcing in NW Borneo: Implications for geological and geomorphic controls on flood hazard.

Scientific reports

Menier D, Mathew M, Pubellier M, Sapin F, Delcaillau B, Siddiqui N, Ramkumar M, Santosh M.
PMID: 28352115
Sci Rep. 2017 Mar 28;7(1):457. doi: 10.1038/s41598-017-00620-y.

Empirical models have simulated the consequences of uplift and orographic-precipitation on the evolution of orogens whereas the effects of these forcings on ridgelines and consequent topography of natural landscapes remain equivocal. Here we demonstrate the feedback of a terrestrial...

Imino phenoxide complexes of niobium and tantalum as catalysts for the polymerization of lactides, ε-caprolactone and ethylene.

Dalton transactions (Cambridge, England : 2003)

Saha TK, Mandal M, Thunga M, Chakraborty D, Ramkumar V.
PMID: 23736066
Dalton Trans. 2013 Jul 28;42(28):10304-14. doi: 10.1039/c3dt50752a.

Imino phenoxide complexes of Nb and Ta show precise control towards the solvent free ring-opening polymerization of lactides (LA) and ε-caprolactone (CL). There is a close proximity between the observed number average molecular weight (M(n)) and theoretical molecular weight...

Facile base-free in situ generation and palladation of mesoionic and normal N-heterocyclic carbenes at ambient conditions.

Dalton transactions (Cambridge, England : 2003)

Sureshbabu B, Ramkumar V, Sankararaman S.
PMID: 24931048
Dalton Trans. 2014 Jul 28;43(28):10710-2. doi: 10.1039/c4dt01112k.

Synthesis of normal and mesoionic N-heterocyclic carbene Pd(II) complexes in near quantitative yields from the corresponding NHC precursor salts under base free and ambient conditions is reported. A plausible mechanism involving charge-assisted hydrogen bonded intermediates is proposed.

The human trochlear and abducens nerves at different ages - a morphometric study.

Aging and disease

Ramkumar M, Sharma S, Jacob TG, Bhardwaj DN, Nag TC, Roy TS.
PMID: 25657848
Aging Dis. 2014 Mar 18;6(1):6-16. doi: 10.14336/AD.2014.0310. eCollection 2015 Feb.

The trochlear and abducens nerves (TN and AN) control the movement of the superior oblique and lateral rectus muscles of the eyeball, respectively. Despite their immense clinical and radiological importance no morphometric data was available from a wide spectrum...

Applications of microalgal biofilms for wastewater treatment and bioenergy production.

Biotechnology for biofuels

Miranda AF, Ramkumar N, Andriotis C, Höltkemeier T, Yasmin A, Rochfort S, Wlodkowic D, Morrison P, Roddick F, Spangenberg G, Lal B, Subudhi S, Mouradov A.
PMID: 28491136
Biotechnol Biofuels. 2017 May 10;10:120. doi: 10.1186/s13068-017-0798-9. eCollection 2017.

BACKGROUND: Microalgae have shown clear advantages for the production of biofuels compared with energy crops. Apart from their high growth rates and substantial lipid/triacylglycerol yields, microalgae can grow in wastewaters (animal, municipal and mining wastewaters) efficiently removing their primary...

Republication: All India Difficult Airway Association 2016 Guidelines for Tracheal Intubation in the Intensive Care Unit.

Indian journal of critical care medicine : peer-reviewed, official publication of Indian Society of Critical Care Medicine

Myatra SN, Ahmed SM, Kundra P, Garg R, Ramkumar V, Patwa A, Shah A, Raveendra US, Shetty SR, Doctor JR, Pawar DK, Ramesh S, Das S, Divatia JV.
PMID: 28400685
Indian J Crit Care Med. 2017 Mar;21(3):146-153. doi: 10.4103/ijccm.IJCCM_57_17.

Tracheal intubation (TI) is a routine procedure in the Intensive Care Unit (ICU) and is often lifesaving. In contrast to the controlled conditions in the operating room, critically ill patients with respiratory failure and shock are physiologically unstable. These...

Implementation of WHO Near-Miss Approach for Maternal Health at a Tertiary Care Hospital: An Audit.

Journal of obstetrics and gynaecology of India

Venkatesh S, Chinmayi, Ramkumar V, Sheela CN, Thomas A.
PMID: 27382220
J Obstet Gynaecol India. 2016 Aug;66(4):259-62. doi: 10.1007/s13224-015-0684-y. Epub 2015 Mar 15.

OBJECTIVE: The objective of this study was to evaluate severe maternal outcomes (including maternal deaths and maternal near-miss cases).MATERIALS & METHODS: A prospective study of severe maternal outcomes (including maternal deaths and maternal near-miss cases) from May 2012 to...

Effect of positive airway pressure during pre-oxygenation and induction of anaesthesia upon safe duration of apnoea.

Indian journal of anaesthesia

Sreejit MS, Ramkumar V.
PMID: 25937647
Indian J Anaesth. 2015 Apr;59(4):216-21. doi: 10.4103/0019-5049.154998.

BACKGROUND AND AIMS: Induction of general anaesthesia per se as also the use of 100% oxygen during induction of anaesthesia, results in the development of atelectasis in dependent lung regions within minutes of anaesthetic induction. We aimed to assess...

Showing 1 to 12 of 363 entries