1,175 research outputs found
Anaemia in India and Its Prevalence and Multifactorial Aetiology: A Narrative Review
Get PDFThe prevalence of anaemia in India remains high in children, especially those in rural areas, and in women of childbearing age, and its impairment of neurological development can have serious lifelong effects. It is concerning that the most recent official data (2019-21) indicate an increased prevalence compared with 2015-16. There is also considerable variability in childhood anaemia between Indian states with socioeconomic factors, such as wealth and education contributing to the risk of anaemia among adolescent women and their children. Dietary iron deficiency is often regarded as the main contributor to anaemia but increasing evidence accumulated from the authors' ongoing literature database coupled with recent literature research suggests that it has a multifactorial aetiology, some of which is not related to nutrition. This narrative review focused on these multifactorial issues, notably the contribution of vitamin B12/folate deficiency, which also has a high prevalence in India. It was also noted that the dietary intake of bioavailable iron remains an important contributor for reducing anaemia, and the role of millets as an improved iron source compared to traditional staple cereals is briefly discussed. The overall conclusion is that anaemia has a multifactorial aetiology requiring multifactorial assessment that must include assessment of vitamin B12 status
Polyaniline/Polyoxometalate Hybrid Nanofibers as Cathode for Lithium Ion Batteries with Improved Lithium Storage Capacity
No full textPolyaniline is a member of the class of electrically conducting polymers, which have possible commercial applications as anticorrosive or static charge removal coatings. Aqueous-based polyaniline coatings are preferred over organic solvent or strong acid based coatings because the water used in these coatings does not pollute the environment. The overall goal of this dissertation was to further the development of useful water-based polyaniline coatings by studying new methods of synthesizing polyaniline particles for water-based coatings, to investigate the material properties of these particles such as molecular weight, electrical conductivity, particle size distribution, and stability of polyaniline in air and water. One method of polymerizing polyaniline for aqueous-based coatings uses micelles, which are composed of a cluster of amphiphile surfactants. Micelles can change the local environment by aligning and absorbing the monomer, and may yield polymers with improved material properties and reaction rates. Nonionic micelles have not been extensively investigated. Therefore the first specific goal of this work was to use an aqueous nonionic micelle solution of nonylphenoxypoly(ethyleneoxy) ethanol surfactant (NP-30 surfactant) to comprehensively investigate a one step chemical polymerization of polyaniline conducted at ?3°C, in 1.25 M HCl, with ammonium peroxydisulfate oxidizer. The results show that increasing surfactant concentrations caused a decrease in molecular weight, electrical conductivity and sharper particle size distribution of the polymer. The second specific objective of this dissertation was to determine the effect of water and air on polyaniline. The results showed no degradation of molecular weight, a decrease in chloride and hydrogen composition, and decrease in electrical conductivity for polyaniline immersed in water for extended periods. A chloride ion diffusion coefficient of 2.5 to 74 × 10<super>?9</super> cm<super>2</super>/hour was measured. The aging of polyaniline powders in a desiccator for 5 years showed no effect on the molecular structure as indicated by the FTIR spectrum. The third specific goal of the research was to measure the real and imaginary refractive index of polyaniline saturated with 1.25 M HCl, which was found to be 1.345 to 1.355 and 0.025 to 0.027, respectively. This information is crucial to measuring the distribution of polyaniline colloids by light scattering
FIGURE 1 in Rediscovery of Impatiens parvifolia and reinstatement of I. omissa (Balsaminaceae) in India
No full textFIGURE 1. Inflorescences of I. goughii (A–B) and I. viscosa (C–D).Published as part of Anirudhan, Anitha Melesuparambil, Mani, Bince, Gnanasekaran, Gunadayalan & Thomas, Sinjumol, 2023, Rediscovery of Impatiens parvifolia and reinstatement of I. omissa (Balsaminaceae) in India, pp. 269-277 in Phytotaxa 589 (3) on page 270, DOI: 10.11646/phytotaxa.589.3.5, http://zenodo.org/record/777699
Synergistic oxidation of NADH on bimetallic CoPt nanoparticles decorated carbon nitride nanotubes
No full textWe demonstrate that carbon nitride nanotube (CNNT) hybrids modified with CoPt nanoparticles (CoPt NPs) oxidize reduced nicotinamide adenine dinucleotide (NADH) to a greater extent than carbon nanotubes (CNTs) or CNNTs alone due to synergistic interactions between the CNNTs and the CoPt NPs through the improved internal network. Heterogeneous nitrogen atoms in the sp(2) carbon network provide strong binding sites for in-situ synthesis of CoPt NPs of homogeneous size. The increase in heterogeneous charge transfer on the CoPt-CNNT hybrid electrode enhanced the electrochemical oxidation of NADH at a low applied potential compared to those for pristine CNTs or CNNTs. Our results suggest that CoPt-CNNT hybrids are highly stable and ideal for use in electrochemical sensing. (C) 2014 Elsevier B.V. All rights reserved.This work was supported by the Global Research Laboratory (GRL) Program (K20704000003TA050000310) through the National Research Foundation (NRF) of Korea funded by the Ministry of Science, ICT and Future Planning (MSIP), an International Cooperation program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korean Ministry of Trade, Industry & Energy (2011T100100369), the Nano Material Technology Development Program (2012M3A7B4035286), the Basic Science Research Program (2012R1A6A1029029), Mid-career Researcher Program (2013R1A2A2A03015161) and the World Class University (WCU) Program (R31-10092) through the NRF funded by the MSIP. This research was also supported by the Korea Center for Artificial Photosynthesis (2009-0093881) and the Global Frontier R&D Program (2013M3A6B1078865) on Center for Hybrid Interface Materials (HIM) funded by the MSIP and the NRF of Korea (2011-0028737, 2012M1A2A2671813)
SnO2 encapsulated TiO2 hollow nanofibers as anode material for lithium ion batteries
No full textNanoparticulate SnO2 was encapsulated into TiO2 hollow nanofibers to achieve high energy density and robust electrochemical performance as an anode material for lithium ion batteries. The SnO2 encapsulated TiO2 hollow nanofibers exhibit improved electrochemical performances over the TiO2 hollow nanofibers, including a high discharge capacity of similar to 517 mAh g(-1) and doubled capacity at a 10 C rate. These improvements on electrochemical performances are attributed to favorable mechanics and kinetics associated with lithium.This work was financially supported by the National Research Foundation of Korea through grant no. K20704000003TA050000310, the Global Research Laboratory Program provided by the Korean Ministry of Education, Science and Technology in 2011, the International Cooperation program of the Korea Insitute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government Ministry of Knowledge Economy (No. 2011T100100369) and the World Class University program through the National Research Foundation of Korea funded by the Ministry of Education, Science and Technology (R31-10092)
FIGURE 3 in Rediscovery of Impatiens parvifolia and reinstatement of I. omissa (Balsaminaceae) in India
No full textFIGURE 3. Impatiens omissa: A-B. Inflorescence, C. Lateral sepals, D–E. Lower sepal, F. Dorsal petal, G–H. Lateral united petal, I. Pistil and stamen, J. Fruit, K. Seeds.Published as part of Anirudhan, Anitha Melesuparambil, Mani, Bince, Gnanasekaran, Gunadayalan & Thomas, Sinjumol, 2023, Rediscovery of Impatiens parvifolia and reinstatement of I. omissa (Balsaminaceae) in India, pp. 269-277 in Phytotaxa 589 (3) on page 273, DOI: 10.11646/phytotaxa.589.3.5, http://zenodo.org/record/777699
FIGURE 5 in Rediscovery of Impatiens parvifolia and reinstatement of I. omissa (Balsaminaceae) in India
No full textFIGURE 5. Impatiens parvifolia: A–B. Inflorescence, C. Lateral sepals, D–E. Lower sepal, F. Dorsal petal, G–H. Lateral united petal, I. Pistil and stamen, J. Fruit, K. Seeds.Published as part of Anirudhan, Anitha Melesuparambil, Mani, Bince, Gnanasekaran, Gunadayalan & Thomas, Sinjumol, 2023, Rediscovery of Impatiens parvifolia and reinstatement of I. omissa (Balsaminaceae) in India, pp. 269-277 in Phytotaxa 589 (3) on page 275, DOI: 10.11646/phytotaxa.589.3.5, http://zenodo.org/record/777699
Through Achille Castiglioni’s Eyes: Two Immersive Virtual Experiences
No full textThe experimentations described here concern the virtualization of the Studio Museo Achille Castiglioni, a small museum that hosts important artefacts designed by one of the most famous architects and designers of the 20th century, winner of 7 “Compasso d’oro” awards. The digitization process creates two virtual experiences to enjoy the place and the design objects to give visibility to the small context far from the big museum. The first (less complex and immersive) experimentation deals with the semantic implementation of 360° panoramic photographs, giving rise to a virtual tour of the museum available on the web with no interaction: it is the description of the state of the art of this place. The second one (a real VR simulation) derives from a more complex workflow based on digital surveying, digital modelling, and developing of virtual environments and interactions. The two proposed case studies demonstrate how new technologies can represent indispensable instruments for the safeguard, enhancement, and communication of Cultural Heritage
Symposium #26
No full textOpening Remarks: Edward C. Halperin, M.D., M.A. They just changed the recommendations for screening mammography... again. Now what should I do?: Anitha Srinivasan Dad, your toenails are disgusting. Are you going to do something? The management of onychomycosis: Michael J. Trepal Panel Discussion: Moderated by Edward C. Halperin, M.D., M.A. One doctor says take a proton pump inhibitor for my gastric reflux. Then I read that these drugs increase the risk of dementia. Should I take them or not?: by Mill Etienne, M.D., M.P.H., FAAN, FAES; Edward Lebovics, M.D. Doctors are always taking a family history as part of their routine medical history and physical. What do they actually do with that information? What kind of records should a family retain about their medical history?: by Lori Solomon, M.D., M.P.H. Q & A: Hosted by Alan Kadish, M.D..https://touroscholar.touro.edu/ninety_minutes/1003/thumbnail.jp
Nanocapsules with stimuli-responsive moieties for controlled release employing light and enzymatic triggers
No full textThe development of stimuli-responsive nanomaterials, that possess tailored functional properties for the release of specific compounds, is of particular interest. To this extent, controlling the release of molecules at the desired target is an important parameter to regulate chemical and/or biological reactions at a more profound level in a wide variety of applications. In the present work, we report on the development of dual-responsive thiourethane-urethane nanocapsules synthesizedviaan interfacial polymerization reaction executed at the droplet interface using the inverse miniemulsion technique. Evidenceviamorphological and controlled release investigations indicate that our nanocapsules are able to encapsulate hydrophilic compounds with high efficiency in their aqueous core and allow for its selective release upon exposure to UV light and the enzyme esterase. Moreover, we demonstrate the efficient encapsulation of the fragrance molecule geranyl acetate and the anticancer drug doxorubicin. For the latter, we demonstrate its apoptotic effect after being released in MCF 7 breast cancer cells. Overall, these nanocapsules can be used for a wide variety of applications where a selective release of the payload is desired.S. S. is an SB PhD Fellow at the FWO (Research Foundation Flanders). S. K. P. acknowledges BOF funding from Hasselt University. This work is supported by Hasselt University and the Research Foundation Flanders (FWO Vlaanderen; Hercules project AUHL/15/2 - GOH3816N). The authors are thankful to Prof. M. Van Bael for access to the DLS device.Pramanik, SK; Ethirajan, A (corresponding author), Hasselt Univ, Inst Mat Res IMO, Wetenschapspk 1 & Agoralaan D, B-3590 Diepenbeek, Belgium; IMEC, Associated Lab IMOMEC, Wetenschapspk 1, B-3590 Diepenbeek, Belgium;
CSIR Cent Salt & Marine Chem Res Inst, Bhavnagar 364002, Gujarat, India.
[email protected]; [email protected]
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