Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 6 de 6
Filtrar
Mais filtros










Base de dados
Intervalo de ano de publicação
1.
Environ Res ; 218: 114824, 2023 02 01.
Artigo em Inglês | MEDLINE | ID: mdl-36455635

RESUMO

Water treatment is as much important as it is to satisfying 11 worldwide sustainable development goals out of 17. The removal of Azo is much important as they are toxic and their existence in water, air and food can easily affect humans by triggering allergies, forming tumours etc. Azo contained Dyes Production was banned in many countries. This research aims to synthesize composite Nanorods and Nanospheres and characterize and test to remove Azo dyes from the wastewater. This research used a previously reported method to rapidly synthesize chitin magnetite nanocomposites (ChM) by co-precipitation while irradiating with ultrasound (US). Detailed structural characterization of ChM revealed a crystalline phase analogous to magnetite and spherical morphologies; extending the reaction time to 8 min yielded a "nanorod" type morphology. Both the morphologies displayed a nanoscale limit with particles averaging between 5 and 30 nm in size, resulting the superparamagnetic performance and saturation magnetization values between 45 and 58 emu/g. The nitrogen adsorption-desorption isotherms showed that the surface modification of ChMs resulted in a rise of specific surface area and pore size. Anionic azo dyes (methyl orange (MO) and reactive black 5 (RB5)) adsorption on the surface of nanocomposites was also demonstrated to be pH-dependent, with the reaction favoured for surface-modified samples at pH 4 and unmodified samples at pH 8. Adsorption capacity studies showed that molecule size effect and electrostatic attraction were two distinct adsorption processes for unmodified and modified ChMs. Chitin Magnetite nanoparticles appear to be a substitute for traditional anionic dye adsorbents. Additionally, the two key materials sources, chitin, and magnetite are inexpensive and easily accessible.


Assuntos
Nanocompostos , Poluentes Químicos da Água , Humanos , Óxido Ferroso-Férrico , Corantes/química , Quitina , Porosidade , Adsorção , Compostos Azo , Fenômenos Magnéticos , Poluentes Químicos da Água/química , Cinética , Concentração de Íons de Hidrogênio
2.
Indian J Psychiatry ; 59(1): 46-55, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28529360

RESUMO

BACKGROUND: Common mental disorders, such as mood, anxiety, and substance use disorders, are significant contributors to disability globally, including India. Available research is, however, limited by methodological issues and heterogeneities. AIM: The present paper focuses on the 12-month prevalence and 12-month treatment for anxiety, mood, and substance use disorders in India. MATERIALS AND METHODS: As part of the World Health Organization World Mental Health (WMH) Survey Initiative, in India, the study was conducted at eleven sites. However, the current study focuses on the household sample of 24,371 adults (≥18 years) of eight districts of different states, covering rural and urban areas. Respondents were interviewed face-to-face using the WMH Composite International Diagnostic Interview after translation and country-specific adaptations. Diagnoses were generated as per the International Classification of Diseases, 10th edition, Diagnostic Criteria for Research. RESULTS: Nearly 49.3% of the sample included males. The 12-month prevalence of common mental disorders was 5.52% - anxiety disorders (3.41%), mood disorders (1.44%), and substance use disorders (1.18%). Females had a relatively higher prevalence of anxiety and mood disorders, and lower prevalence of substance use disorders than males. The 12-month treatment for people with common mental disorders was 5.09% (range 1.66%-11.55% for individual disorders). The survey revealed a huge treatment gap of 95%, with only 5 out of 100 individuals with common mental disorders receiving any treatment over the past year. CONCLUSION: The survey provides valuable data to understand the mental health needs and treatment gaps in the Indian population. Despite the 12-month prevalence study being restricted to selected mental disorders, these estimates are likely to be conservative due to under-reporting or inadequate detection due to cultural factors.

3.
Indian J Psychol Med ; 37(4): 388-92, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26702168

RESUMO

BACKGROUND: Atypical antipsychotic drugs are known to cause many side effects which include daytime drowsiness. So many add on drugs are tried to reduce the same. MATERIALS AND METHODS: 72 patients who were on atypical antipsychotic drugs were randomly assigned to either Modafinil or placebo and were followed for a period of 12 weeks. Daytime drowsiness, was taken at baseline, week 3, and at week 12 by using VAS, EDD scales. RESULTS: The results were analyzed and showed that the Modafinil add on therapy significantly reduced the daytime Drowsiness. CONCLUSIONS: Modafinil could be a potential candidate in selected group of patients to decrease some of the unwanted adverse events like daytime drowsiness produced by atypical antipsychotics.

4.
J Chem Ecol ; 33(1): 59-73, 2007 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-17146721

RESUMO

Host location and acceptance by egg parasitoids can be mediated by close-range host stimuli. In this study, we tested the response of Trichogramma japonicum Ashmead to cuticular extracts of adult and larval rice yellow stem borer (YSB), Scripophaga incertulas Walker. We also studied the wasps' response to extracts from YSB larval frass. Laboratory bioassays revealed that hexane extracts of the adult host body stimulate ovipositor probing of T. japonicum. Extracts of larval frass also stimulated parasitization. In contrast, host larval cuticular extracts had no effect on parasitization rates. Fractionation of the crude extracts of adult YSB cuticular extracts was performed using silica gel chromatography, followed by bioassays of the individual fractions to test their effects on wasp behavior. Analyses of the most active fractions by gas chromatography-mass spectrometry revealed that the extract contained saturated long chain alkanes and alkenes, with carbon numbers ranging from C20 to C32. Hydrocarbons were applied onto host eggs to test their effects on parasitization rates. Treatments of eggs with docosane, tetracosane, pentacosane, and eicosane enhanced host egg parasitization, while pentadecane, hexadecane, and nonadecane deterred oviposition.


Assuntos
Ovos/parasitologia , Insetos/fisiologia , Feromônios/fisiologia , Vespas/fisiologia , Animais , Feminino , Cromatografia Gasosa-Espectrometria de Massas , Insetos/embriologia , Oviposição , Feromônios/isolamento & purificação
6.
Lancet ; 2(8044): 895-8, 1977 Oct 29.
Artigo em Inglês | MEDLINE | ID: mdl-72240

RESUMO

In eight impotent haemodialysed men with low plasma-zinc levels sexual function, including potency, frequency of intercourse, libido, and plasma testosterone, follicle-stimulating hormone, and luteinising hormone levels, was determined before and after therapy with zinc (four patients) or placebo (four patients). Dialytic administration of zinc strikingly improved potency in all patients and raised the plasma-testosterone to normal in the two with low pretreatment plasma-testosterone levels. Placebo did not improve sexual function in any patient. Zinc deficiency is a reversible cause of gonadal dysfunction in uraemia.


Assuntos
Disfunção Erétil/tratamento farmacológico , Uremia/complicações , Zinco/uso terapêutico , Adulto , Coito , Disfunção Erétil/etiologia , Hormônio Foliculoestimulante/sangue , Seguimentos , Humanos , Libido/fisiologia , Hormônio Luteinizante/sangue , Masculino , Pessoa de Meia-Idade , Diálise Renal , Testosterona/sangue , Uremia/fisiopatologia , Uremia/terapia , Zinco/sangue , Zinco/deficiência
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...