Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Resultados 1 - 20 de 84
Filtrar
1.
J Postgrad Med ; 63(1): 4-10, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-27779152

RESUMEN

BACKGROUND: Considering a huge working population in health sector faced with stressful work life, limited autonomy in work and declining work contentment calls for an overemphasis on evaluating and monitoring their satisfaction associated with work-related quality of life (WRQoL). This study evaluates WRQoL of hospital employees and validates the bilingual (English and Marathi) version of WRQoL scale. METHODS: The study was conducted during March-April'2014 on employees of a corporate hospital of Pune, India after ethical approval and informed consent from employees. The bilingual WRQoL scale has been tested for reliability and validity, and WRQoL scores have been reported. RESULTS: A total of 132 hospital employees (mean age 31 [±8] years, 55% males) who participated in the study reported overall moderate WRQoL scores. The scale showed high internal consistency (Cronbach's alpha = 0.82, P < 0.0001) and moderate to high validity. WRQoL did not significantly vary across marital status, family size, and gender. "Stress at work" score of WRQoL increased with age of employees. Higher work experience, employment at higher positions and those working in clinical and diagnostic departments reported a higher WRQoL. CONCLUSION: WRQoL scale is a reliable and valid instrument. Better WRQoL in employees placed in higher organizational positions indicates a need for focused measures to enhance WRQoL of employees in lower hierarchical levels, especially in control at work and home life interface domains. WRQoL needs regular monitoring for employees in lower positions and aging employees.


Asunto(s)
Personal de Salud/psicología , Estrés Laboral , Satisfacción Personal , Psicometría/instrumentación , Calidad de Vida/psicología , Estrés Psicológico/psicología , Encuestas y Cuestionarios , Lugar de Trabajo/psicología , Adulto , Estudios Transversales , Femenino , Humanos , India , Masculino , Persona de Mediana Edad , Reproducibilidad de los Resultados
2.
IEEE J Biomed Health Inform ; 27(5): 2288-2295, 2023 05.
Artículo en Inglés | MEDLINE | ID: mdl-34665750

RESUMEN

Restrictive public health measures such as isolation and quarantine have been used to reduce the pandemic virus's transmission. With no proper treatment, older adults have been specifically advised to stay home, given their vulnerability to COVID-19. This pandemic has created an increasing need for new and innovative assistive technologies capable of easing the lives of people with special needs. Smart home systems have become widely popular in providing such assistive services to isolated older adults. These systems can provide better services to assist older people if it anticipates what activities inhabitants will perform ahead of time. For example, a smart home can prompt inhabitants to initiate essential activities like taking medicine using activity prediction. This paper proposes a multi-task activity prediction system that jointly predicts labels, locations, and starting times of future activities. The observed sequence of previous activities characterizes future activities. We use body activity information from wearable sensors and motion information from passive environmental sensors to sense activities of daily living of older adults. The activity prediction system consists of recurrent neural networks to capture temporal dependencies. This work also carries out several experiments on collected and existing real datasets to evaluate the system's performance.


Asunto(s)
COVID-19 , Dispositivos de Autoayuda , Humanos , Anciano , Actividades Cotidianas
3.
IEEE J Biomed Health Inform ; 26(11): 5494-5505, 2022 11.
Artículo en Inglés | MEDLINE | ID: mdl-36048978

RESUMEN

Epilepsy is a severe threat to society due to the treatment time, cost, and unpredictable nature of the disease, thereby imposing an urgent need for intelligent analysis. Electroencephalogram (EEG) is a commonly deployed test for detecting epilepsy that analyses the electrical activity of an individual's brain. This work proposes an optimized deep sequential model to improve the seizure classification performance based on a hybrid feature set derived from EEG signals. A novel hybridized Battle Royale Search and Rescue optimization (BRRO) algorithm is proposed for optimizing a deep learning (DL) model. Also, the proposed hybrid feature set utilizes empirical mode decomposition, variational mode decomposition, and empirical wavelet transform to capture the temporal property of the data set. The proposed method is validated using publicly available data sets. The results manifest that the proposed optimized algorithm provides better results than the other alternatives.


Asunto(s)
Epilepsia , Trabajo de Rescate , Humanos , Convulsiones/diagnóstico por imagen , Epilepsia/diagnóstico por imagen , Electroencefalografía/métodos , Análisis de Ondículas , Algoritmos , Procesamiento de Señales Asistido por Computador
4.
Neural Process Lett ; 53(6): 3981-4010, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34305439

RESUMEN

Training a machine learning model on the data sets with missing labels is a challenging task. Not all models can handle the problem of missing labels. However, if these data sets are further corrupted with label noise, it becomes even more challenging to train a machine learning model on such data sets. We propose to use a transductive support vector machine (TSVM) for semi-supervised learning in this situation. We make this model robust to label noise by using a truncated pinball loss function with it. We name our approach, pin ¯ -TSVM. We provide both the primal and the dual formulations of the obtained robust TSVM for linear and non-linear kernels. We also perform experiments on synthetic and real-world data sets to prove the superior robustness of our model as compared to the existing approaches. To this end, we use small as well as large-scale data sets to perform the experiments. We show that the model is capable of training in the presence of label noise and finding the missing labels of the data samples. We use this property of pin ¯ -TSVM to detect the coronavirus patients based on their chest X-ray images.

5.
Aust Dent J ; 66(1): 105-111, 2021 03.
Artículo en Inglés | MEDLINE | ID: mdl-33616961

RESUMEN

Dental extractions are a common part of general dental practice. While dentists routinely screen for medical contraindications during the preoperative assessment, undiagnosed coagulopathies have the potential to severely complicate a seemingly routine extraction. We report a case of surgical removal of a mandibular third molar in a patient with undiagnosed Von Willebrand Disease.


Asunto(s)
Enfermedades de von Willebrand , Humanos , Extracción Dental , Enfermedades de von Willebrand/complicaciones , Enfermedades de von Willebrand/diagnóstico
6.
Sci Rep ; 10(1): 21445, 2020 Dec 08.
Artículo en Inglés | MEDLINE | ID: mdl-33293584

RESUMEN

Growth of polycrystalline CdMnTe ternary compound thin films has been carried out using cathodic electrodeposition technique at different cathodic potentials. The range of the cathodic potentials used in this work has been chosen according to the cyclic voltammogram results. The CdMnTe thin films were electroplated from electrolyte containing CdSO4, TeO2 and MnSO4 in an acidic aqueous medium. Glass/fluorine-doped tin oxide (FTO) substrates have been used to electrodeposit the semiconductor layers. The structural, compositional, morphological, optical and electrical properties of the CdMnTe thin films were studied using X-ray diffraction (XRD), Sputtered neutral-mass spectroscopy (SNMS), Scanning electron microscopy (SEM), UV-Vis spectroscopy and Photo-electro-chemical (PEC) cell measurements respectively. The primarily grown as-deposited (AD) layers went through two different post-growth surface treatment conditions- heat-treated in air in the presence of CdCl2 (CCT) and heat-treated in air in the presence of GaCl3 (GCT). Results from the XRD indicated the polycrystalline nature of the electrodeposited films. The electroplated films have cubic crystal structures and the preferred orientation was found to be along the (111) plane of CdMnTe. Inclusion of Mn has been qualitatively observed using SNMS measurement. The optical energy bandgaps of the thin films were found to be varying between ~ 1.90 and ~ 2.20 eV. Though all the layers after post-treatment showed p-type electrical conduction, both p and n-type conductivity were obtained at different cathodic potentials for as-deposited materials. Comparison of the deposited layers to other electrodeposited ternary compounds has also been discussed.

7.
Environ Sci Pollut Res Int ; 24(1): 164-179, 2017 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-27704381

RESUMEN

Ozone dynamics in two urban background atmospheres over middle Indo-Gangetic Plain (IGP) were studied in two contexts: total columnar and ground-level ozone. In terms of total columnar ozone (TCO), emphases were made to compare satellite-based retrieval with ground-based observation and existing trend in decadal and seasonal variation was also identified. Both satellite-retrieved (Aura Ozone Monitoring Instrument-Differential Optical Absorption Spectroscopy (OMI-DOAS)) and ground-based observations (IMD-O3) revealed satisfying agreement with OMI-DOAS observation over predicting TCO with a positive bias of 7.24 % under all-sky conditions. Minor variation between daily daytime (r = 0.54; R 2 = 29 %; n = 275) and satellite overpass time-averaged TCO (r = 0.58; R 2 = 34 %; n = 208) was also recognized. A consistent and clear seasonal trend in columnar ozone (2005-2015) was noted with summertime (March-June) maxima (Varanasi, 290.9 ± 8.8; Lucknow, 295.6 ± 9.5 DU) and wintertime (December-February) minima (Varanasi, 257.4 ± 10.1; Lucknow, 258.8 ± 8.8 DU). Seasonal trend decomposition based on locally weighted regression smoothing technique identified marginally decreasing trend (Varanasi, 0.0084; Lucknow, 0.0096 DU year-1) especially due to reduction in monsoon time minima and summertime maxima. In continuation to TCO, variation in ground-level ozone in terms of seasonality and precursor gases were also analysed from September 2014 to August 2015. Both stations registered similar pattern of variation with Lucknow representing slightly higher annual mean (44.3 ± 30.6; range, 1.5-309.1 µg/m3) over Varanasi (38.5 ± 17.7; range, 4.9-104.2 µg/m3). Variation in ground-level ozone was further explained in terms water vapour, atmospheric boundary layer height and solar radiation. Ambient water vapour content was found to associate negatively (r = -0.28, n = 284) with ground-level ozone with considerable seasonal variation in Varanasi. Implication of solar radiation on formation of ground-level ozone was overall positive (Varanasi, 0.60; Lucknow, 0.26), while season-specific association was recorded in case of atmospheric boundary layer.


Asunto(s)
Ozono/análisis , Contaminantes Atmosféricos/análisis , Contaminantes Atmosféricos/química , Atmósfera/análisis , Clima , Monitoreo del Ambiente/métodos , India , Ozono/química , Estaciones del Año
8.
Artículo en Inglés | MEDLINE | ID: mdl-16307903

RESUMEN

Ternary copper(II) complexes involving polypyridyl ligands in the coordination sphere of composition [Cu(tpy)(phen)](ClO4)2 (1), [Cu(tpy)(bipy)](ClO4)2 (2), [Cu(tptz)(phen)](ClO4)2 (3) and [Cu(tptz)(bipy)](BF4)2 (4) where tpy = 2,2':6',2''-terpyridine, tptz = 2,4,6-tri(2-pyridyl)-1,3,5-triazine, phen = 1,10-phenanthroline and bipy = 2,2'-bipyridine have been synthesized and characterized by elemental analysis, magnetic susceptibility, X-band e.p.r. spectroscopy and electronic spectroscopy. Single crystal X-ray of (1) has revealed the presence of a distorted square pyramidal geometry in the complex. Magnetic susceptibility measurements at room temperature were in the range of 1.77-1.81 BM. SOD and antimicrobial activities of these complexes were also measured. Crystal data of (1): P-1, a = 9.3010(7) A, b = 9.7900(6) A, c = 16.4620(6) A, Vc = 1342.73(14) A3, Z = 4. The bond distance of CuN in square base is 2+/-0.04 A.


Asunto(s)
Antibacterianos/química , Antifúngicos/química , Cobre/química , Compuestos Organometálicos/química , Antibacterianos/síntesis química , Antibacterianos/farmacología , Antifúngicos/síntesis química , Antifúngicos/farmacología , Bacterias/efectos de los fármacos , Cristalografía por Rayos X , Hongos/efectos de los fármacos , Ligandos , Microscopía Electrónica , Estructura Molecular , Compuestos Organometálicos/síntesis química , Compuestos Organometálicos/farmacología , Superóxido Dismutasa/química
9.
J Phys Condens Matter ; 28(37): 376001, 2016 09 21.
Artículo en Inglés | MEDLINE | ID: mdl-27419361

RESUMEN

Magnetoresistance (MR), thermo power, magnetization and Hall effect measurements have been performed on Co-doped Bi2Se3 topological insulators. The undoped sample shows that the maximum MR as a destructive interference due to a π-Berry phase leads to a decrease of MR. As the Co is doped, the linearity in MR is increased. The observed MR of Bi2Se3 can be explained with the classical model. The low temperature MR behavior of Co doped samples cannot be explained with the same model, but can be explained with the quantum linear MR model. Magnetization behavior indicates the establishment of ferromagnetic ordering with Co doping. Hall effect data also supports the establishment of ferromagnetic ordering in Co-doped Bi2Se3 samples by showing the anomalous Hall effect. Furthermore, when spectral weight suppression is insignificant, Bi2Se3 behaves as a dilute magnetic semiconductor. Moreover, the maximum power factor is observed when time reversal symmetry (TRS) is maintained. As the TRS is broken the power factor value is decreased, which indicates that with the rise of Dirac cone above the Fermi level the anomalous Hall effect and linearity in MR increase and the power factor decreases.

10.
J Inorg Biochem ; 99(2): 651-63, 2005 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-15621300

RESUMEN

Four imidazolate-bridged binuclear copper(II)-copper(II) and copper(II)-zinc(II) complexes viz., [(Bipy)(2)Cu-Im-Cu(Bipy)(2)](ClO(4))(3).CH(3)OH, [(Phen)(2)Cu-Im-Cu(Phen)(2)](BF(4))(3).2CH(3)OH, [(Bipy)(2)Cu-Im-Zn(Bipy)(2)](BF(4))(3), and [(Phen)(2)Cu-Im-Zn(Phen)(2)](BF(4))(3), (Bipy=2,2'-Bipyridyl, Phen=1-10-Phenanthroline and Im=imidazolate ion) were synthesized as a possible models for superoxide dismutase (SOD). Complex [(Bipy)(2)Cu-Im-Cu(Bipy)(2)](ClO(4))(3).CH(3)OH has been structurally characterized. This complex crystallizes in the triclinic space group P1, with the unit parameters a=8.88(5) A, b=13.79(17) A, c=20.18(18) A, alpha=76.424(8)(o), beta=85.888(6)(o), gamma=82.213(7). The metal-nitrogen bond length from 1.972-2.273 A and the distance Cu-Cu is 5.92 A. The five-coordinate geometry about the copper(II) ion is square pyramidal. Magnetic moment and electron paramagnetic resonance (e.p.r.) spectral measurements of the homobinuclear complexes have shown an antiferromagnetic exchange interaction. From the e.p.r. and UV-Vis spectral measurement studies, these complexes have been found to be stable (pH 8.5-10.5 for 1, 10.5 for 2,3 and 8.5 for 4). These complexes catalyse the dismutation of superoxide radical (O(2)(-)) at biological pH. All the observations indicate that these complexes act as good possible models for superoxide dismutase.


Asunto(s)
Cobre/química , Compuestos Organometálicos/química , Compuestos Organometálicos/síntesis química , Superóxido Dismutasa/química , Zinc/química , Animales , Antibacterianos/síntesis química , Antibacterianos/química , Antibacterianos/farmacología , Dominio Catalítico , Bovinos , Cristalografía por Rayos X , Espectroscopía de Resonancia por Spin del Electrón , Técnicas In Vitro , Modelos Químicos , Estructura Molecular , Compuestos Organometálicos/farmacología , Espectrometría de Masa Bombardeada por Átomos Veloces , Espectrofotometría
11.
Spectrochim Acta A Mol Biomol Spectrosc ; 61(1-2): 287-97, 2005 Jan 01.
Artículo en Inglés | MEDLINE | ID: mdl-15556452

RESUMEN

The imidazolate-bridged binuclear copper(II)-copper(II) complex [(dien)Cu(mu-im)Cu(dien)](ClO(4))(3) and related mononuclear complexes [Cu(dien)(H(2)O)](ClO(4))(2), [Cu(dien)(Him)](ClO(4))(2) were synthesized with diethylenetriamine (dien) as capping ligand. The crystal structure of mononuclear [Cu(dien)(Him)](ClO(4))(2) and binuclear complex [(dien)Cu(mu-im)Cu(dien)](ClO(4))(3) have been determined by single crystal X-ray diffraction methods. The mononuclear complex [Cu(dien)(Him)](ClO(4))(2) crystallizes in the orthorhombic, Pca2(1) with a = 9.3420(9) A, b = 12.3750(9) A, c = 14.0830(9) A, beta = 90.000(7)(o) and Z = 4 and binuclear complex [(dien)Cu(mu-im)Cu(dien)](ClO(4))(3) crystallizes in the monoclinic space group P2(1)/a, with a = 15.017(7) A, b = 11.938(6) A, c = 15.386(6) A, beta = 110.30(4)(o) and Z = 4. The molecular structures show that copper(II) ions in an asymmetrically elongated octahedral coordination (type 4 + 1 + 1) and in binuclear complex Cu(1) atom has a asymmetrically elongated octahedral coordination (type type 4 + 1 + 1) and Cu(2) atom exhibits a square base pyramidal coordination (type 4 + 1). The bridging ligand (imidazolate ion, im) lies nearly on a straight line between two Cu(2+), which are separated by 5.812 A, slightly shorter than the value in copper-copper superoxide dismutase (Cu(2)-Cu(2)SOD). Magnetic measurements and electron spin resonance (ESR) spectroscopy of the binuclear complex have shown an antiferromagnetic exchange interaction. From pH-dependent cyclic voltametry (CV) and electronic spectroscopic studies the complex has been found to be stable over a wide pH range (7.75-12.50).


Asunto(s)
Cobre/química , Modelos Químicos , Compuestos Organometálicos/química , Superóxido Dismutasa/química , Absorción , Antibacterianos/farmacología , Carbono/química , Cristalografía por Rayos X , Electroquímica , Electrodos , Espectroscopía de Resonancia por Spin del Electrón , Vidrio , Concentración de Iones de Hidrógeno , Magnetismo , Conformación Molecular , Estructura Molecular , Compuestos Organometálicos/síntesis química , Compuestos Organometálicos/farmacología , Soluciones , Superóxido Dismutasa/metabolismo
12.
Spectrochim Acta A Mol Biomol Spectrosc ; 61(11-12): 2603-10, 2005 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-16043054

RESUMEN

X-band electron spin resonance (ESR) and UV-vis spectra of a homobinuclear [(Bipy)2Cu-E-Im-Cu(Bipy)2](BF4)3 and a heterobinuclear [(Bipy)2Cu-E-Im-Zn(Bipy)2](BF4)3 complexes, E-Im=2-ethylimidazolate ion have been described as possible models for superoxide dismutase (SOD). Magnetic moment and ESR spectral measurements of the homobinuclear complex have shown an antiferromagnetic exchange interaction. From pH-dependent ESR and UV-vis spectral measurements studies, these complexes have been found to be stable over 8.5-10.5 pH range. These complexes catalyze the dismutation of superoxide (O2-) at biological pH. All the observations indicate that these complexes act as good possible models for superoxide dismutase.


Asunto(s)
Materiales Biomiméticos/síntesis química , Materiales Biomiméticos/farmacología , Cobre/química , Compuestos Organometálicos/química , Zinc/química , Antibacterianos/síntesis química , Antibacterianos/química , Antibacterianos/farmacología , Materiales Biomiméticos/química , Color , Dimetilsulfóxido , Espectroscopía de Resonancia por Spin del Electrón , Concentración de Iones de Hidrógeno , Magnetismo , Estructura Molecular , Proteus vulgaris/efectos de los fármacos , Soluciones/química , Espectrofotometría , Superóxido Dismutasa/metabolismo , Superóxidos/química , Superóxidos/metabolismo
13.
Artículo en Inglés | MEDLINE | ID: mdl-15863062

RESUMEN

X-band E.S.R., magnetic and electronic spectra of some imidazolate-bridged homometallic complexes [(en)2Cu-R-Im-Cu(en)2](ClO4)3 where en, ethylenediamine; R-ImH, R = H imidazole (ImH); if R = CH3, 2-methylimidazole (M-ImH) and if R = C2H5, 2-ethylimidazole (E-ImH), and mononuclear complexes [(en)Cu-dien](ClO4)2 and [(en)Cu-PMDT](ClO4)2 where dien, diethylenetriamine; PMDT, pentamethyldiethylenetriamine have been described. Superoxide dismutase (SOD) activity has also been measured and compared with earlier reported complexes. In frozen solution at 77 K, the spectra show axial symmetry with a d(x2-y2) ground state. Difference in lambda(max) between mononuclear and binuclear complexes was found to be approximately 65-75 nm. Magnetic susceptibility and E.S.R. spectral measurements for all these binuclear complexes revealed that the copper(II) ions are involved in antiferromagnetic exchange interactions propagated by the imidazolate bridge.


Asunto(s)
Cobre/química , Espectroscopía de Resonancia por Spin del Electrón/métodos , Etilenodiaminas/química , Imidazoles/química , Compuestos Organometálicos/química , Superóxido Dismutasa/química , Sitios de Unión , Campos Electromagnéticos , Electrones , Concentración de Iones de Hidrógeno , Concentración 50 Inhibidora , Ligandos , Magnetismo , Modelos Químicos , Conformación Molecular , Espectrofotometría , Superóxidos/química , Temperatura
14.
Spectrochim Acta A Mol Biomol Spectrosc ; 62(1-3): 261-8, 2005 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-16257723

RESUMEN

Two new mixed ligand copper(II) complexes with diethylenetriamine, 2,2'-bipyridine and 1,10-phenanthroline have been synthesized. The crystal and molecular structures of [Cu(dien)(phen)](ClO(4))(2) and [Cu(dien)(bipy)](BF(4))(2) (dien=diethylenetriamine, phen=1,10-phenanthroline, bipy=2,2'-bipyridine) were determined by X-ray crystallography from single crystal data. These two complexes have similar structures. The EPR spectral data also suggest that these complexes have distorted square pyramidal geometry about copper(II). Anti-microbial and superoxide dismutase activities of these complexes have also been measured. They show the higher SOD activity than the corresponding simple Cu(II)-dien/Cu(II)-PMDT (PMDT=N,N,N',N',N''-pentamethyldiethylenetriamine) complexes because of a strong axial bond of one of the nitrogen atoms of the alpha-diimine. Both the complexes have been found to cleave plasmid DNA in the presence of co-reductants such as ascorbic acid and glutathione.


Asunto(s)
Cobre/química , Fenantrolinas/química , Poliaminas/química , Antibacterianos/farmacología , Cobre/farmacología , Cristalografía por Rayos X , Espectroscopía de Resonancia por Spin del Electrón , Escherichia coli/efectos de los fármacos , Cinética , Ligandos , Pruebas de Sensibilidad Microbiana , Modelos Moleculares , Conformación Molecular , Fenantrolinas/farmacología , Plásmidos/metabolismo , Poliaminas/farmacología , Proteus/efectos de los fármacos , Pseudomonas/efectos de los fármacos , Salmonella/efectos de los fármacos , Staphylococcus/efectos de los fármacos , Superóxido Dismutasa/metabolismo
15.
J Biomol Struct Dyn ; 9(2): 299-313, 1991 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-1660279

RESUMEN

Ab initio calculations (Hartree-Fock) using the 6-31 G basis set have been performed on two prototype lexitropsins or information-reading molecules. The latter are DNA minor groove binding agents related to the A.T recognizing netropsin in which each of the two N-methylpyrrole moieties is replaced in turn by 1-methylimidazole and which thereby confers the property of recognizing G.C sites.Ab initio treatment was possible by examining composities of separate non-conjugated segments of the molecules. Geometry optimized conformations, energies and distribution of electrostatic charges within the molecules were derived. The ab initio derived parameters of the geometry optimized conformations of these lexitropsins were used to interpret their interaction with different sequences within the minor groove of B-DNA.


Asunto(s)
ADN/metabolismo , Netropsina/análogos & derivados , Secuencia de Bases , ADN/química , Enlace de Hidrógeno , Datos de Secuencia Molecular , Estructura Molecular , Netropsina/química , Netropsina/metabolismo , Conformación de Ácido Nucleico , Oligodesoxirribonucleótidos , Teoría Cuántica
16.
J Inorg Biochem ; 98(2): 231-7, 2004 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-14729303

RESUMEN

X-band electron spin resonance (ESR) and electronic spectra of oxalatobridged heterodinuclear Cu-Ni and Cu-Zn complexes, viz., [(PMDT)Cu-Ox-Ni(PMDT)](BPh(4))(2).2CH(3)CN and [(PMDT)Cu-Ox-Zn(PMDT)](BPh(4))(2).2CH(3)CN, where PMDT=pentamethyldiethylenetriamine, Ox=oxalate ion have been described. Complex [(PMDT)Cu-Ox-Ni(PMDT)](BPh(4))(2).2CH(3)CN has been structurally characterized. This complex crystallizes in the monoclinic space group, C(2) (No. 5) with the unit parameters a=20.445(4) A, b=14.884(3) A, c=23.174(5) A, alpha=90 degrees, beta=102.693(4) degrees, gamma=90 degrees, V=6880(2) A(3) and Z=4. The structure refined to R=0.0354 and R(w)=0.0853 for 21,109 reflections with I>2 sigma(I) using 765 parameters, shows the presence of a MN(3)O(2) chromophore in a distorted trigonal-bipyramidal (TBP) heterometallic complex with oxalate dianion. Taking with an equatorial Cu-O=2.137(8) A and an axial Cu-O=1.961(6) A coordination site at Cu(II) ion and equatorial Ni-O=2.178(7) A and axial Ni-O=1.994 (9) A coordination site at Ni(II) ion. The Cu-Ni distance is 5.3532(9) A and Cu-C(2)O(4)-Ni unit is planar. The [(PMDT)Cu-Ox-Ni(PMDT)](2+) shows the ESR spectrum of the antiferromagnetic spin exchange with each dinuclear delocalization of the unpaired electron over the unit and spin-doublet ground state which demonstrates the Cu-Ox-Ni core. Antimicrobial and superoxide dismutase (SOD) activities of these complexes have also been measured.


Asunto(s)
Antibacterianos/química , Compuestos Organometálicos/química , Superóxido Dismutasa/metabolismo , Animales , Antibacterianos/farmacología , Bacterias/efectos de los fármacos , Cobre/química , Cobre/metabolismo , Cristalografía por Rayos X , Espectroscopía de Resonancia por Spin del Electrón , Metales Pesados/química , Metales Pesados/metabolismo , Níquel/química , Níquel/metabolismo , Compuestos Organometálicos/metabolismo , Compuestos Organometálicos/farmacología , Oxalatos/química , Oxalatos/metabolismo , Análisis Espectral , Relación Estructura-Actividad , Zinc/química , Zinc/metabolismo
17.
Soc Sci Med ; 35(10): 1293-302, 1992 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-1439912

RESUMEN

The Indo-Dutch Environmental and Sanitary Engineering Project under Ganga action Plan in Kanpur and Mirzapur is being executed within the framework of Indo-Dutch bilateral development cooperation. The project aims to integrate technological, social and health related improvements. It is expected that the development approach and methodology can be replicated in other urban settlements in India. The project is being supplemented by a training and institutional strengthening programme, which will facilitate the transfer of new technologies and improvements in operation and maintenance of these new technologies. One of the project's goals is to improve living conditions in the targeted areas by installing drinking water and drainage systems. A socio-economic unit (SEU) in the project supports these technical interventions by encouraging the community to participate in project activities. The Occupational Health Programme in Mirzapur was conceived by the SEU to improve the health and living conditions of child and adult weavers. At the start of the programme, 200 weavers and 60 non-weaver workers from Mirzapur city, matched for age and socio-economic status, were interviewed and underwent a physical examination. The mean age of the weavers is 27 years, reflecting the relatively large percentage of child labour (13.5%). Illiteracy among them is 73%, whereas 14% have had only a primary education. 64.5% of the carpet weavers are Muslims and 35.6% are Hindus. 61% own a loom or work in a family owned loom shed. 95% of the weavers have a monthly income of less than 600 Rs. Complaints of a persistent cough and cough with expectoration, backache, the common cold and joint pains occurred more often in the weaver population than in the comparison group and have been identified as 'occupational hazards'. An intervention programme has been implemented based on the results of the occupational health survey. These interventions include awareness camps, installment of plexiglass tiles for light improvement in the loom sheds, training of community health volunteers and house-to-house health education. Another essential part of the programme is the provision of functional literacy classes for child and adult labourers in the carpet weaving industry. Occupational health as an entry point proved to be a successful approach in this segment of the informal sector, where child labour plays an important role.


Asunto(s)
Servicios de Salud del Trabajador/organización & administración , Adolescente , Adulto , Niño , Escolaridad , Empleo , Femenino , Conocimientos, Actitudes y Práctica en Salud , Humanos , India , Masculino , Morbilidad , Pruebas de Función Respiratoria , Factores Socioeconómicos , Encuestas y Cuestionarios , Textiles
18.
Int Surg ; 64(2): 79-81, 1979 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-317280

RESUMEN

The prophylactic use of the antifibrinolytic drug, PAMBA, in a small intravenous dose preoperatively, combined with local irrigation postoperatively, effectively reduces blood loss. The drug is safe and relatively free of adverse side effects, but attentive postoperative care is warranted.


Asunto(s)
Ácido 4-Aminobenzoico/uso terapéutico , Aminobenzoatos/uso terapéutico , Antifibrinolíticos/uso terapéutico , Hemorragia/prevención & control , Complicaciones Intraoperatorias/prevención & control , Complicaciones Posoperatorias/prevención & control , Prostatectomía , Anciano , Ácido Aminocaproico/uso terapéutico , Antifibrinolíticos/efectos adversos , Humanos , Masculino , Persona de Mediana Edad , Cuidados Posoperatorios , Premedicación , para-Aminobenzoatos
19.
Spectrochim Acta A Mol Biomol Spectrosc ; 59(13): 3111-22, 2003 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-14583286

RESUMEN

X-band e.s.r. and optical absorption spectra of the imidazolate bridged heterobimetallic complexes [(tren)Cu-E-Im-Zn-(tren)](ClO(4))(3) and [(tren)Cu-E-Im-Ni-(tren)](ClO(4))(3), where trentris(2-aminoethyl)amine, E-Im=2-ethylimidazolate ion and the related mononuclear complexes [Cu(tren)](ClO(4))(2) and [(tren)Cu-E-ImH)](ClO(4))(2) have been described. Biological activities (superoxide dismutase and antimicrobial) have also been measured and compared with reported complexes.


Asunto(s)
Antiinfecciosos/química , Imidazoles/análisis , Compuestos Organometálicos/análisis , Superóxido Dismutasa , Antiinfecciosos/farmacología , Cobre , Espectroscopía de Resonancia por Spin del Electrón/métodos , Enterococcus faecalis/efectos de los fármacos , Escherichia coli/efectos de los fármacos , Indicadores y Reactivos , Ligandos , Pruebas de Sensibilidad Microbiana , Modelos Moleculares , Níquel , Espectrofotometría , Zinc
20.
Indian J Exp Biol ; 11(5): 441-3, 1973 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-4793256

RESUMEN

PIP: Parous goats were sham operated (6 goats), bilaterally fitted with IUDs (7 goats), or unilaterally fitted with an IUD isilateral (6 goats) or contralateral (5 goats) to the corpus luteum (CL). Autopsy was on Day 3 or Day 5 of the second or third estrus. The cycle length of IUD-fitted goats was shorter than in controls (6.2 days vs. 16.7 days, p less than .05). Mean CL weight in the contralateral group, 164.8 mg, exceeded mean weight of the ipsilateral group, 92.4 mg (P less than .01). The concentration of total cholesterol was higher in the ipsilateral group than in the contralateral group (3.16 vs. 2.12 mg/gm CL, p less than .01). The protein concentration in CL from the control, unilateral and bilateral groups was 14.4, 12.2, and 23.9 mg, respectively, p less than .05. The content and concentration of progesterone, and total and free cholesterol was higher in sham operated controls than in IUD-fitted goats (not significant). Protein, RNA, and DNA increased considerably in IUD-fitted goats (not significant), indicating a derangement of a luteotrophic rather than luteomorphic mechanism in CL from IUD-fitted goats.^ieng


Asunto(s)
Cuerpo Lúteo/análisis , Cabras/metabolismo , Dispositivos Intrauterinos , Animales , Colesterol/análisis , ADN/análisis , Femenino , Progesterona/análisis , Proteínas/análisis , ARN/análisis
SELECCIÓN DE REFERENCIAS
Detalles de la búsqueda