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Thakur M. New Additions to Nonconjugated Conductive Polymers; Nonlinear Optical Effects. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2009. [DOI: 10.1080/10601320903340135] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Ahmed F, Farheen A, Ali I, Thakur M, Muzaffar A, Samina M. Management of Diarrhea in Under-fives at Home and Health Facilities in Kashmir. Int J Health Sci (Qassim) 2009; 3:171-5. [PMID: 21475533 PMCID: PMC3068810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023] Open
Abstract
BACKGROUND Diarrheal disease forms one of the two major killer diseases in children under five years of age in the developing world. There are inherent cultural practices for management of diarrhea at the domestic level. Also, the treatment practices at health centers vary, with inappropriate use of antibiotics, and iv fluids observed commonly, while ORS is less frequently used. METHODOLOGY Cross sectional study was carried out using pretested interview schedule between January and December 2006, in villages of Kashmir Valley. RESULTS The ORS use rate is low (24.4% and 8.4%) respectively in past and current episode. Cultural practices include harmful ones like starving to overcome the episode. The rate of Antibiotic use is higher with 77.9%. CONCLUSION Kashmir valley faces the same problems in effective diarrhea management as in other developing regions of India and the world, viz. less ORS use, high antibiotic use and harmful cultural practices like giving bowel rest.
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Modgil M, Sharma T, Thakur M. COMMERCIALLY FEASIBLE PROTOCOL FOR ROOTING AND ACCLIMATIZATION OF MICROPROPAGATED APPLE ROOTSTOCKS. ACTA ACUST UNITED AC 2009. [DOI: 10.17660/actahortic.2009.839.25] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Patra M, Thakur M, Majumdar S, Giri S. The exchange bias effect in phase separated Nd(1-x)Sr(x)CoO(3) at the spontaneous ferromagnetic/ferrimagnetic interface. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2009; 21:236004. [PMID: 21825601 DOI: 10.1088/0953-8984/21/23/236004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We report new results for the exchange bias effect in Nd(1-x)Sr(x)CoO(3) for x = 0.20 and 0.40, where the exchange bias phenomenon is involved with the ferrimagnetic (FI) state in a spontaneously phase separated system. The zero-field-cooled magnetization exhibits FI (T(FI)) and ferromagnetic (FM; T(C)) transitions at ∼23 and ∼70 K, respectively, for x = 0.20. Negative horizontal and positive vertical shifts of the magnetic hysteresis loops are observed when the system is cooled through T(FI) in a positive static magnetic field. A training effect is observed for x = 0.20, which could be interpreted satisfactorily by the spin configurational relaxation model. The unidirectional shifts of the hysteresis loops as a function of temperature exhibit an absence of exchange bias above T(FI) for x = 0.20. Analysis of the cooling field dependence of the exchange bias field and magnetization indicates that the FM clusters consist of a single magnetic domain with an average size of around ∼20 and ∼40 Å for x = 0.20 and 0.40, respectively. The sizes of the FM clusters are close to the percolation threshold for x = 0.20; these grow and coalesce to form the bigger size for x = 0.40 resulting in a weak exchange bias effect.
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Thakur M, Azmi W. Biotransformation of L-tyrosine to tyramine by the growing cells of Lactococcus lactis. Acta Microbiol Immunol Hung 2009; 56:101-14. [PMID: 19388561 DOI: 10.1556/amicr.56.2009.1.8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The potential of pyridoxal-5-phosphate dependent tyrosine decarboxylase (E.C. 4.1.1.25) of Lactococcus lactis was explored for the biotransformation of L-tyrosine to tyramine. Maximum bioconversion of L-tyrosine to tyramine was achieved in tyramine production medium (pH -5.5) at 30 degrees C after 16 h of incubation with 0.2% L-tyrosine. The yield oftyramine was found to be 11.8 microg/mL by the growing cells of L. lactis at shake flask level. Growth medium and different physico-chemical parameters to maximize the biotransformation of L-tyrosine to tyramine were optimized and yielded 1.9-fold increased synthesis of tyramine.
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Narayanan A, Palthi A, Thakur M. Electrical and Optical Properties of a Novel Nonconjugated Conductive Polymer, Polynorbornene. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2009. [DOI: 10.1080/10601320902732654] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Patra M, Thakur M, De K, Majumdar S, Giri S. Reply to comment on 'Particle size dependent exchange bias and cluster-glass states in LaMn(0.7)Fe(0.3)O(3) '. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2009; 21:078002. [PMID: 21817352 DOI: 10.1088/0953-8984/21/7/078002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
In reply to the comment by Geshev we emphasize that loop shift in the compounds is not a simplified phenomenon of minor loop effect of a ferromagnet rather, it is a genuine signature of exchange bias effect. The estimate of anisotropy field and the plot of exchange bias field at 5 K with the maximum field used for the measurement of hysteresis loop, in addition to the previously reported results such as temperature dependence of exchange bias field, training effect, etc, confirm the exchange bias effect.
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Parmar V, Nadkarni M, Thakur M, Shet T, Badwe R. Contralateral breast screening using mammography – is it worthwhile in developing countries? EJC Suppl 2008. [DOI: 10.1016/s1359-6349(08)70366-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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Thakur M, Pal Chowdhury M, Majumdar S, Giri S. Dominant dipolar interaction and glassy magnetic behaviour in polymer-coated magnetite nanoparticles. NANOTECHNOLOGY 2008; 19:045706. [PMID: 21817523 DOI: 10.1088/0957-4484/19/04/045706] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The static and dynamic properties of magnetization have been investigated for polymer-coated magnetite nanoparticles with sizes from 5 to 15 nm. The analysis of the temperature dependence of zero-field-cooled magnetization indicates that the effective anisotropy constant is found to increase with the decrease of particle size, which is ascribed to the increase of surface anisotropy. The relaxation of the remanent magnetization clearly shows the signature of dominant dipolar interparticle interaction. The dynamics of magnetization also indicates the signature of glassy magnetic behaviour. The memory effect in the temperature dependence of field-cooled magnetization is noticed, which is inconsistent with the glassy magnetic behaviour.
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Narayanan A, Ramamurthy V, Duin E, Thakur M. EPR Spectroscopic Studies of Radical Cations in a Novel Nonconjugated Conductive Polymer, Poly(β‐pinene). JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2007. [DOI: 10.1080/10601320701787016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Sharma T, Modgil M, Thakur M. Factors affecting induction and development of in vitro rooting in apple rootstocks. INDIAN JOURNAL OF EXPERIMENTAL BIOLOGY 2007; 45:824-9. [PMID: 17907750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Shoots of apple rootstocks raised in vitro were transferred to various rooting media to study the effect of different factors on root initiation and development. Various concentrations of indole-3-butyric acid (IBA) initiated rooting but maximum rooting percentage was found with 2.0 and 2.5 mg l(-1) of IBA in M7 and with 1.0 mg l(-1) of IBA in MM106. The drawback was that the roots were thick, short and with profuse callus. The presence of activated charcoal (AC) in the rooting medium improved the rooting quality but reduced the rooting percentage in both the rootstocks. In high auxin dip of 70, 80 and 90 mg l(-1) IBA for 2, 2 and 1 hr showed 75-85 per cent rooting in M7, but lacked reproducibility of the results. Whereas in MM106, 66 - 70 % rooting was achieved with 70 mg l(-1) of IBA dip for 3 h. Root induction in shoots in IBA containing liquid medium (LM) in dark for few days and root elongation in IBA--free medium in light proved most effective. On the other hand, continuous light treatment showed reduced rooting. Reduction of MS salts and sucrose in root elongation medium showed decreased rooting. Plantlets from two--stage rooting procedure showed more rapid growth and satisfactory survival during hardening of plants and on transfer to field.
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Thakur CP, Kumar A, Mitra G, Thakur S, Thakur M. Pharmacovigilance in kala-azar patients with severe thrombocytopenia caused by sodium antimony gluconate & miltefosine. Indian J Med Res 2007; 126:73-5. [PMID: 17890828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023] Open
Abstract
Sodium antimony gluconate (SAG) and miltefosine used in the treatment of kala-azar are known to cause several side effects but severe thrombocytopenia has not been reported. Four cases of severe thrombocytopenia, two caused by SAG and two by miltefosine were promptly detected and treated by immediate withdrawal of the offending drugs, platelet and blood transfusions and dexamethasone. After improvement Leishman-Donovan (LD) bodies were demonstrated in splenic aspirates of both patients of SAG group and one of miltefosine and they were treated with 1 mg/kg body wt of amphotericin B for 20 days and cured. One patient of miltefosine group treated outside only on the basis of rK-39 positivity did not show LD bodies in splenic aspirates and improved without any antikala- azar drug. None of the patients relapsed within 6 months of follow up. Prompt detection of side effects under the concept of pharmacovigilance can save life of such patients.
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Narasimhan S, Govindarajan R, Madhavan V, Thakur M, Dixit VK, Mehrotra S, Madhusudanan KP. Action of (2-->1)Fructo-oligopolysaccharide fraction of Chlorophytum borivilianum against Streptozotocin-Induced oxidative stress. PLANTA MEDICA 2006; 72:1421-4. [PMID: 17051465 DOI: 10.1055/s-2006-951705] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
A fructo-oligosaccharide was isolated from Chlorophytum borivilianum and identified as O-beta-D-fructofuranosyl-(2-->1)-(beta-D-fructofuranosyl) (n)-(2-->1)-alpha-D-glucopyranoside (n = 5 - 30) using high-pressure anion exchange chromatography, MALDI-MS, NMR, GC, HPTLC and chemical analysis. The extract and the fructo-oligosaccharide were found to have significant antidiabetic activity with the blood sugar levels being 118.32 +/- 3.56 and 110.21 +/- 4.22, respectively, as compared to the control value of 231.25 +/- 3.03 along with moderate antioxidant activity in streptozotocin-induced diabetic animals.
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Thakur M, Khatavkar S, Parish EJ. Polyalloocimene, a Novel Nonconjugated Conductive Polymer: The Correct Fundamental Basis for Conductive Polymers. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2006. [DOI: 10.1081/ma-120025318] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Tiwari B, Thakur A, Thakur M, Pandey ND, Narvi SS, Sudele P. Modeling of cytotoxicity on some non- nucleoside reverse transcriptase inhibitors of HIV-1: role of physicochemical parameters. ARKIVOC 2006. [DOI: 10.3998/ark.5550190.0007.225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Vippa P, Rajagopalan H, Thakur M. Electrical and optical properties of a novel nonconjugated conductive polymer, poly(β-pinene). ACTA ACUST UNITED AC 2005. [DOI: 10.1002/polb.20660] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Modgil M, Handa R, Sharma D, Thakur M. HIGH EFFICIENCY SHOOT REGENERATION FROM LEAF EXPLANTS OF IN VITRO GROWN SHOOTS OF APPLE. ACTA ACUST UNITED AC 2005. [DOI: 10.17660/actahortic.2005.696.21] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Kaushal N, Modgil M, Thakur M, Sharma DR. In vitro clonal multiplication of an apple rootstock by culture of shoot apices and axillary buds. INDIAN JOURNAL OF EXPERIMENTAL BIOLOGY 2005; 43:561-5. [PMID: 15991584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
In vitro clonal multiplication of apple rootstock MM 111 using axillary buds and shoot apices were carried out. Vegetative axillary buds of the size of 0.2-2.0 cm and shoot apices measuring 4 mm in length were initiated to shoot proliferation on MS medium supplemented with BA (0.5 - 1.0 mgl(-1)), GA3(0.5 mgl(-1)), with or without IBA(0.05 - 0.1 mgl(-1)). Small size explants showed less phenol exudation and less contamination. Following establishment phase, the small shoots emerged from explants were subcultured on MS medium supplemented with different combinations and concentrations of growth regulators. BA (1.0 mgl(-1)) and GA3 (0.5 mgl(-1)) combination showed highest multiplication rate (1:5), andcl also produced longer shoots. Two step rooting was done by transferring microcuttings to auxin free solid medium after root initiation in dark on 1/2 strength MS liquid medium containing IBA (0.5 mgl(-1) ). Rooted plantlets were transferred to peat containing paper cups and resulting plants of MM 111 acclimated successfully for transfer to field.
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Parmar V, Badwe R, Hawaldar R, Chinoy R, Sarin R, Jalali R, Nair R, Gupta S, Thakur M, Dinshaw K. P49 Predictors of recurrence after breast conservation treatment in 1668 women. Breast 2005. [DOI: 10.1016/s0960-9776(05)80088-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Thakur M, Swamy R, Titus J. Quadratic Electrooptic Effect in a Nonconjugated Conductive Polymer. Macromolecules 2004. [DOI: 10.1021/ma0304877] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Thakur M, Meyler S. Growth of large-area thin-film single crystals of poly(diacetylenes). Macromolecules 2002. [DOI: 10.1021/ma00153a057] [Citation(s) in RCA: 106] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Tanaka H, Gomez MA, Tonelli AE, Lovinger AJ, Davis DD, Thakur M. Structural and morphological study of a melt-crystallized polydiacetylene. Macromolecules 2002. [DOI: 10.1021/ma00195a072] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Havens JR, Thakur M, Lando JB, Koenig JL. Study of the solid-state crosspolymerization of poly(1,11-dodecadiyne) through magic-angle carbon-13 NMR. Macromolecules 2002. [DOI: 10.1021/ma00135a016] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Tanaka H, Thakur M, Gomez MA, Tonelli AE. Study of the thermochromic phase transition of a polydiacetylene by solid state carbon-13 NMR. Macromolecules 2002. [DOI: 10.1021/ma00178a029] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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