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1.
Bioresour Technol ; 286: 121362, 2019 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-31054410

RESUMEN

The pharmaceuticals are biologically active compounds used to prevent and treat diseases. These pharmaceutical compounds were not fully metabolized by the human body and thus excreted out in the wastewater stream. Thus, the study on the treatment of synthetic hospital wastewater containing pharmaceuticals (ibuprofen, carbamazepine, estradiol and venlafaxine) was conducted to understand the variation of the bacterial community in a submerged membrane bioreactor (SMBR) at varying hydraulic retention time (HRT) of 6, 12 and 18 h. The variation in bacterial community dynamics of SMBR was studied using high throughput sequencing. The removal of pharmaceuticals was uniform at varying HRT. The removal of both ibuprofen and estradiol was accounted for 90%, whereas a lower removal of venlafaxine (<10%) and carbamazepine (>5%) in SMBR was observed. The addition of pharmaceuticals alters the bacterial community structure and result in increased abundance of bacteria (e.g., Flavobacterium, Pedobacter, and Methylibium) reported to degrade toxic pollutant.


Asunto(s)
Eliminación de Residuos Líquidos , Aguas Residuales , Bacterias , Reactores Biológicos , Membranas Artificiales
2.
J Biosoc Sci ; 50(1): 124-143, 2018 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-28416040

RESUMEN

Early sexual debut is of major concern because it is a correlate for health and economic shocks experienced in adulthood. In South Africa, this concern has provided impetus for research directed at the HIV and AIDS epidemic, teenage pregnancy and the effect of adolescent sexual behaviour on persistence in school. Of interest to the present study is high school completion, which is a well-established empirical barometer of adult socioeconomic opportunities. Using data from the five waves of the Cape Area Panel Study (CAPS), this paper examines the association between sexual behaviours initiated in pre- and early adolescence and high school completion rates. The CAPS study is a longitudinal survey that was designed to investigate young people's (aged 14-22 years) educational attainment and sexual behaviours in Cape Town, South Africa. The sample was constituted from 3213 individuals who had initiated sex during their teenage years and the analysis was undertaken when the youngest cohort was aged 21, an age at which they should have completed high school if they were on time. Logistic regression models were fitted separately for males and females. Overall, the results reveal that early sexual debut is correlated with long-term negative educational outcomes. Individuals who experience early sexual debut are less likely to complete high school than their counterparts who make their sexual debut later on in life. This effect is worse for Africans, who also disproportionately have an earlier sexual debut than other race groups. Apart from race however, the findings also reinforce the effect of other demographic factors on high school completion, namely, place of residence and family socioeconomic status as measured by parental education and household income. Hence, early sexual debut adds another layer of inequality and worsens the plight of Africans, females, those living in rural areas and those who come from low-income families.


Asunto(s)
Coito , Países en Desarrollo , Escolaridad , Adolescente , Adulto , Factores de Edad , Estudios de Cohortes , Femenino , Encuestas Epidemiológicas , Humanos , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Clase Social , Sudáfrica , Estadística como Asunto , Adulto Joven
3.
Chemosphere ; 161: 390-399, 2016 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-27448320

RESUMEN

Complex dissolved organic matter (DOM) present in landfill leachate provides reliable media for adsorption of highly hydrophobic contaminants, such as Di 2-ethyl hexyl phthalate (DEHP). In this research, the feasibility of submerged membrane bioreactor (SMBR) for treatment of landfill leachate (LFL) was determined. Later, the operating conditions were optimized for removal of DEHP, COD, NH4(+) and PO4(3-), and finally the effect of bioavailability was examined by introduction of different concentrations of humic acid into the influent. The result revealed that presence of complex agglomerated organic compounds increased the removal efficiency of DEHP and COD, even though DEHP biodegradation rate in sludge dramatically decreased (from 58.8% to 12.8%). MBR retention of different metals in the absence and in the presence of recalcitrant DOM was also studied. Like DEHP, ternary interaction between metals, DOM, and sludge play a pivotal role in their removal efficiency and their concentration in sludge.


Asunto(s)
Compuestos de Amonio/metabolismo , Dietilhexil Ftalato/metabolismo , Sustancias Húmicas , Metales/metabolismo , Fosfatos/metabolismo , Contaminantes Químicos del Agua/metabolismo , Adsorción , Biodegradación Ambiental , Disponibilidad Biológica , Análisis de la Demanda Biológica de Oxígeno , Reactores Biológicos , Interacciones Hidrofóbicas e Hidrofílicas , Membranas Artificiales , Eliminación de Residuos , Aguas del Alcantarillado
4.
Environ Pollut ; 194: 281-293, 2014 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-25091800

RESUMEN

Phthalates, such as Di (2-ethylhexyl) Phthalate (DEHP) are compounds extensively used as plasticizer for long time around the world. Due to the extensive usage, DEHP is found in many surface waters (0.013-18.5 µg/L), wastewaters (0.716-122 µg/L), landfill leachate (88-460 µg/L), sludge (12-1250 mg/kg), soil (2-10 mg/kg). DEHP is persistent in the environment and the toxicity of the byproducts resulting from the degradation of DEHP sometime exacerbates the parent compound toxicity. Water/Wastewater treatment processes might play a key role in delivering safe, reliable supplies of water to households, industry and in safeguarding the quality of water in rivers, lakes and aquifers. This review addresses state of knowledge concerning the worldwide production, occurrence, fate and effects of DEHP in the environment. Moreover, the fate and behavior of DEHP in various treatment processes, including biological, physicochemical and advanced processes are reviewed and comparison (qualitative and quantitative) has been done between the processes. The trends and perspectives for treatment of wastewaters contaminated by DEHP are also analyzed in this review.


Asunto(s)
Dietilhexil Ftalato/análisis , Instalaciones de Eliminación de Residuos , Eliminación de Residuos Líquidos , Aguas Residuales/química , Contaminantes Químicos del Agua/análisis , Monitoreo del Ambiente , Plastificantes/análisis , Ríos/química , Aguas del Alcantarillado/química
5.
Climacteric ; 14(2): 282-8, 2011 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-21244215

RESUMEN

OBJECTIVE: To examine the effect of intravaginal dehydroepiandrosterone (DHEA) on pain at sexual activity (dyspareunia) identified as the most bothersome symptom of vaginal atrophy in postmenopausal women at both screening and day 1. METHODS: This prospective, randomized, double-blind and placebo-controlled phase III clinical trial studied the effect of prasterone (DHEA) applied locally in the vagina on the severity of dyspareunia in 114 postmenopausal women who had identified dyspareunia as their most bothersome symptom of vaginal atrophy, while meeting the criteria for superficial cells ≤ 5% and pH > 5.0 at both screening and day 1. RESULTS: At the standard duration of 12 weeks of treatment, increasing doses of 0.25%, 0.5% and 1.0% DHEA decreased the percentage of parabasal cells by 48.6  ±â€Š 6.78%, 42.4  ±  7.36% and 54.9  ±â€Š 6.60% (p < 0.0001 vs. placebo for all) with no change with placebo (p = 0.769). The effects on superficial cells and pH were also highly significant compared to placebo at all DHEA doses. The severity score of pain at sexual activity decreased by 0.5, 1.4, 1.6 and 1.4 units in the placebo and 0.25%, 0.5% and 1.0% DHEA groups, respectively, with the p value of differences from placebo ranging from 0.0017 to < 0.0001. CONCLUSIONS: Intravaginal DHEA, through local estrogen and androgen formation, causes a rapid and highly efficient effect on pain at sexual activity without systemic exposure of the other tissues, thus avoiding the recently reported systemic effects of estrogens.


Asunto(s)
Deshidroepiandrosterona/administración & dosificación , Dispareunia/tratamiento farmacológico , Administración Intravaginal , Deshidroepiandrosterona/uso terapéutico , Relación Dosis-Respuesta a Droga , Método Doble Ciego , Femenino , Humanos , Posmenopausia , Resultado del Tratamiento
6.
Rev Sci Instrum ; 81(2): 02A331, 2010 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-20192352

RESUMEN

The Off-Line Ion Source (OLIS) [K. Jayamanna, D. Yuan, T. Kuo, M. MacDonald, P. Schmor, and G. Dutto, Rev. Sci. Instrum. 67, 1061 (1996); K. Jayamanna, Rev. Sci. Instrum. 79, 02711 (2008)] facility consists of a high voltage terminal containing a microwave cusp ion source, either a surface ion source or a hybrid surface-arc discharge ion source [K. Jayamanna and C. Vockenhuber, Rev. Sci. Instrum. 79, 02C712 (2008)], and an electrostatic switch that allows the selection of any one of the sources without mechanical intervention. These sources provide a variety of +1 beams up to mass 30 for Isotope Separator and ACcelerator (ISAC) [R. E. Laxdal, Nucl. Instrum. Methods Phys. Res. B 204, 400 (2003)] experiments, commissioning the accelerators, setting up the radioactive experiments, and for tuning the beam lines. The radio frequency quadrupole (RFQ) [M. Marchetto, Z. T. Ang, K. Jayamanna, R. E. Laxdal, A. Mitra, and V. Zvyagintsev, Eur. Phys. J. Spec. Top. 150, 241 (2005)] injector accelerator is a constant velocity machine designed to accept only 2 keV/u and the source extraction energy is limited to 60 kV. Further stripping is then needed downstream of the RFQ to inject the beam into the drift tube linac [M. Marchetto, Z. T. Ang, K. Jayamanna, R. E. Laxdal, A. Mitra, and V. Zvyagintsev, Eur. Phys. J. Spec. Top. 150, 241 (2005)] accelerator that requires A/q up to 6. Base on this constraints a multicharge ion source capable to deliver beams above mass 30 with A/q up to 6 was needed in order to reach full capability of the ISAC facility. A Supernanogan [C. Bieth et al., Nucleonika 48, S93 (2003)] multicharge ion source was then purchased from Pantechnik and was installed in the OLIS terminal. Commissioning and performance of the Supernanogan with some results such as emittance dependence of the charge states as well as charge state efficiencies are presented.

7.
Rev Sci Instrum ; 79(2 Pt 2): 02C711, 2008 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-18315264

RESUMEN

The off-line ion source (OLIS) terminal consists of a microwave cusp ion source, either a surface ion source or a hybrid surface-arc discharge ion source and an electrostatic switch that allows selecting any one of the sources without mechanical intervention. These sources provide variety of beams to ISAC experiments, for commissioning the accelerators, for setting up the radioactive experiments, and for tuning the beam lines. The microwave ion source has been operational since 1995 and provides singly and doubly charged beams from various stable isotopes for many ISAC experiments at high and low energy areas. Originally its prime goal was to provide beams from gaseous elements, but later two ovens and a sputtering system were added in order to provide beams from liquids and from solids. The surface ion source installed in 2002 can provide low energy spread beams from alkali and semialkali elements. It also has three separate ovens and an ionizer. Therefore, it can provide three different temperature regions simultaneously to provide different beams to ISAC. It is mainly used for laser spectroscopy experiments and other experiments, which require a finite beam quality. A hybrid surface-arc discharge ion source was also developed and installed in order to meet specific demands from experiments. This source terminal is now automated for start up and for mass selection. It is capable of providing stable beams for months without maintenance and it is also capable of providing negative ion beams if required. To date, over 40 different isotopes including many rear isotopes were delivered to various experiments from the OLIS source terminal. Performances of the ion sources and some of the results are discussed.

8.
Med Princ Pract ; 16(4): 310-4, 2007.
Artículo en Inglés | MEDLINE | ID: mdl-17541298

RESUMEN

OBJECTIVES: To investigate the effect of viral hepatitis on serum levels of apo- and lipoproteins in different forms of liver diseases. MATERIALS AND METHODS: One hundred and thirty adult patients and 100 healthy age- and gender-matched control individuals participated in this study. Patients were grouped according to four types of liver disease: acute viral hepatitis, chronic active hepatitis (CAH), cirrhosis of the liver and fulminant hepatic failure. RESULTS: Hepatitis B virus, C virus and E virus (HEV) infections were recorded in different combinations in these patients, but viral infections of hepatitis A and D were not seen in any of the patient groups. The results of lipo- and apoprotein analysis showed different patterns. The low-density lipoprotein value was high in the CAH group. In the other three groups, low-density lipoprotein level was comparable to the control value. The high-density lipoprotein level (p = 0.02) was significantly low in all groups except in the cirrhosis group. Apo-A was significantly reduced in the acute viral hepatitis and fulminant hepatic failure groups, whereas Apo-B level was low in the CAH and cirrhosis groups. The lipoprotein (a) level in these groups was low, compared to control. CONCLUSION: No apparent relationship was observed between etiological viruses and ensuing changes in lipid/lipoprotein profile..


Asunto(s)
Apoproteínas/sangre , Lipoproteínas/sangre , Enfermedad Aguda , Adulto , Enfermedad Crónica , Femenino , Hepatitis Crónica/sangre , Hepatitis Viral Humana/sangre , Humanos , Cirrosis Hepática/sangre , Fallo Hepático Agudo/sangre , Masculino
9.
Drug Dev Ind Pharm ; 29(4): 405-15, 2003 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-12737534

RESUMEN

Haloperidol (HAL), an antipsychotic, is associated with side effects of drug-induced extrapyramidal syndrome (EPS) in conventional monotherapy. Controlled released transdermal dosage form (TDDS) of the drug was designed for maintenance therapy. Matrix-diffusion type transdermal film of HAL was designed with Eudragit NE 30D copolymer without permeation enhancer in different combinations. For the feasibility studies, all standard evaluations were performed, and their results pointed toward the suitability of TDDS. The drug release and permeation studies in Franz diffusion cell in 20% PEG-normal saline followed the Higuchi equation with optimum correlation coefficient. The neuroleptic efficacy was confirmed by maximum graded response in a rotarod apparatus. The neuroleptic-induced catatonia (EPS) in albino rats was minimum with a score of zero over a 72-hr study. The pharmacokinetic parameters in rabbit model showed a very significant prolongation of action up to 72 hr with steady-state plasma concentration (cp(ss)) of 11.58 ng/mL. Thus, the HAL-loaded TDDS improved the therapeutic profile by preventing the neuroleptic-induced EPS and might be a better alternative during its long period of psychiatric treatment over conventional dosage form.


Asunto(s)
Antipsicóticos/administración & dosificación , Sistemas de Liberación de Medicamentos/métodos , Haloperidol/administración & dosificación , Esquizofrenia/tratamiento farmacológico , Administración Cutánea , Animales , Antipsicóticos/efectos adversos , Antipsicóticos/farmacocinética , Área Bajo la Curva , Femenino , Semivida , Haloperidol/efectos adversos , Haloperidol/farmacocinética , Humanos , Ratones , Conejos , Ratas
10.
N Engl J Med ; 340(8): 618-26, 1999 Feb 25.
Artículo en Inglés | MEDLINE | ID: mdl-10029647

RESUMEN

BACKGROUND: Epidemiologic studies have reported differences in the use of cardiovascular procedures according to the race and sex of the patient. Whether the differences stem from differences in the recommendations of physicians remains uncertain. METHODS: We developed a computerized survey instrument to assess physicians' recommendations for managing chest pain. Actors portrayed patients with particular characteristics in scripted interviews about their symptoms. A total of 720 physicians at two national meetings of organizations of primary care physicians participated in the survey. Each physician viewed a recorded interview and was given other data about a hypothetical patient. He or she then made recommendations about that patient's care. We used multivariate logistic-regression analysis to assess the effects of the race and sex of the patients on treatment recommendations, while controlling for the physicians' assessment of the probability of coronary artery disease as well as for the age of the patient, the level of coronary risk, the type of chest pain, and the results of an exercise stress test. RESULTS: The physicians' mean (+/-SD) estimates of the probability of coronary artery disease were lower for women (probability, 64.1+/-19.3 percent, vs. 69.2+/-18.2 percent for men; P<0.001), younger patients (63.8+/-19.5 percent for patients who were 55 years old, vs. 69.5+/-17.9 percent for patients who were 70 years old; P<0.001), and patients with nonanginal pain (58.3+/-19.0 percent, vs. 64.4+/-18.3 percent for patients with possible angina and 77.1+/-14.0 percent for those with definite angina; P=0.001). Logistic-regression analysis indicated that women (odds ratio, 0.60; 95 percent confidence interval, 0.4 to 0.9; P=0.02) and blacks (odds ratio, 0.60; 95 percent confidence interval, 0.4 to 0.9; P=0.02) were less likely to be referred for cardiac catheterization than men and whites, respectively. Analysis of race-sex interactions showed that black women were significantly less likely to be referred for catheterization than white men (odds ratio, 0.4; 95 percent confidence interval, 0.2 to 0.7; P=0.004). CONCLUSIONS: Our findings suggest that the race and sex of a patient independently influence how physicians manage chest pain.


Asunto(s)
Angina de Pecho/etnología , Población Negra , Cateterismo Cardíaco/estadística & datos numéricos , Dolor en el Pecho/etnología , Enfermedad Coronaria/diagnóstico , Selección de Paciente , Médicos , Población Blanca , Factores de Edad , Anciano , Actitud del Personal de Salud , Enfermedad Coronaria/etnología , Recolección de Datos , Toma de Decisiones , Femenino , Humanos , Modelos Logísticos , Masculino , Persona de Mediana Edad , Médicos/psicología , Médicos/estadística & datos numéricos , Médicos de Familia/psicología , Médicos de Familia/estadística & datos numéricos , Atención Primaria de Salud , Factores Sexuales
11.
Anc Sci Life ; 16(4): 298-301, 1997 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-22556805

RESUMEN

A simple spectrophotometric method is reported her for the estimation of reserpine in polyherbal formulations. Estimation is based on the reaction with3-methylbenzolinone-2hydrazone (MBTH) reagent in presence of cerric ammonium sulphate to yield a violet coloured chromogen, which exhibits and absorption maxima at 580 nm. The chromogen is stable for 10 minutes.

12.
Anc Sci Life ; 16(1): 15-20, 1996 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-22556765

RESUMEN

The formulation of polyherbal hair care powders was attempted in our laboratories. There formulation (A-C) were found to be ideal and evaluation of these formulations is reported here.

13.
Anc Sci Life ; 14(1-2): 16-20, 1994 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-22556670

RESUMEN

Search for naturally occurring compounds with antifungal activity has become quite intense due to the side effects of synthetic fungicides and the development of pathogens against such fungicides. Hence screening of various Siddha drugs for their antifungal activity against various strains of Candida albicans was considered worthwhile. Seven such Siddha drugs were screened for their antifungal activity against fourteen strains of Candida albicans. The results indicate that the drugs Nandhi mezhugu, Vaan mezhugu, Erasa Kenthi mezhugu and Parangi pattai choornam possessed significant antifungal activity against various strains of C.albicans.

14.
Union Med Can ; 122(6): 428-31, 1993.
Artículo en Francés | MEDLINE | ID: mdl-8303784

RESUMEN

Research has documented differences between hyperactive and normal children. However, to be valid, a diagnostic entity must differ in etiology, course, characteristics, or treatment response from other behavior problems as well as from normality. In order to demonstrate the validity of this syndrome, the research has followed three lines: the search for a biological marker, the study of symptoms and the evaluation of the suspected cognitives deficits. No final answers have been obtained yet but understanding of this clinical entity is still progressing.


Asunto(s)
Trastorno por Déficit de Atención con Hiperactividad/diagnóstico , Trastorno por Déficit de Atención con Hiperactividad/etiología , Trastorno por Déficit de Atención con Hiperactividad/fisiopatología , Trastorno por Déficit de Atención con Hiperactividad/psicología , Trastorno por Déficit de Atención con Hiperactividad/terapia , Niño , Diagnóstico Diferencial , Humanos , Reproducibilidad de los Resultados
17.
Dimens Crit Care Nurs ; 9(3): 130-42, 1990.
Artículo en Inglés | MEDLINE | ID: mdl-2340783

RESUMEN

CAVH is gaining acceptance as an alternative to traditional therapies for renal failure and diuretic-resistant fluid overload in critical care areas. This article describes precise nursing management techniques and provides a detailed care plan for caring for the patient undergoing this emerging treatment modality.


Asunto(s)
Hemofiltración/enfermería , Planificación de Atención al Paciente , Cuidados Críticos , Hemofiltración/instrumentación , Hemofiltración/métodos , Humanos
18.
Gut ; 31(4): 431-4, 1990 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-2338269

RESUMEN

The proportion of oligosaccharide chains on the Fc fragment of IgG which terminate with N-acetylglucosamine (GlcNAc) rather than galactose is increased in rheumatoid arthritis and tuberculosis, and in sera from patients with Crohn's disease, probably because of decreased activity of a galactosyltransferase in B lymphocytes. We have assayed the prevalence of agalactosyl oligosaccharides on IgG in sera from 67 patients with inflammatory bowel disease (32 ulcerative colitis and 35 Crohn's disease). The prevalence of agalactosyl IgG significantly increases in the majority of Crohn's patients (19/35 patients), and correlates with the level of C-reactive protein (r = 0.79), and inversely with the concentration of serum albumin. Sera from ulcerative colitis patients show less frequent (nine of 32) and less marked rises in agalactosyl IgG, and sera with high C-reactive protein values can contain normal levels. Thus in ulcerative colitis no correlation was seen between the two assays. The diseases in which the percentage of agalactosyl IgG is raised (rheumatoid arthritis, tuberculosis, Crohn's disease and some ulcerative colitis) are characterised by simultaneous T cell mediated granulomatous tissue damage, and acute phase responses. Levels are normal in less tissue damaging granulomatous conditions, including sarcoidosis, and leprosy (except during episodes of erythema nodosum leprosum). We suggest therefore that a raised percentage of agalactosyl IgG is a correlate of a particular type of T cell mediated pathology which may be relevant to the pathogenesis of inflammatory bowel disease.


Asunto(s)
Proteína C-Reactiva/análisis , Colitis Ulcerosa/inmunología , Enfermedad de Crohn/inmunología , Inmunoglobulina G/análisis , Adolescente , Adulto , Colitis Ulcerosa/sangre , Enfermedad de Crohn/sangre , Femenino , Humanos , Masculino , Persona de Mediana Edad
19.
Indian Pediatr ; 26(1): 26-31, 1989 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-2759692

RESUMEN

Hemostatic profile (prothrombin time (PT), thrombin time (TT), kaolin cephalin clotting time (KCCT), plasma fibrinogen, serum fibrin/fibrinogen degradation products (FDP) and platelet counts) was examined in 153 neonates with birth anoxia and 86 with sepsis. Remarkable hemostatic alterations occurred in neonates with severe anoxia and sepsis, while those with moderate anoxia exhibited minimal or no change. Vitamin K administration to anoxic babies showed no improvement in the hemostatic profile after 48-72 hours. The hemostatic alterations were presumably due to incipient disseminated intravascular coagulation (DIC). In spite of the marked coagulation changes, only 3 neonates with sepsis and none of the anoxic newborns presented with clinical bleeding indicating a well balanced hemostatic mechanism.


Asunto(s)
Infecciones Bacterianas/sangre , Hemostasis , Hipoxia/sangre , Pruebas de Coagulación Sanguínea , Femenino , Productos de Degradación de Fibrina-Fibrinógeno/metabolismo , Humanos , Recién Nacido , Enfermedades del Prematuro/sangre , Recuento de Plaquetas , Embarazo
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