Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 3 de 3
Filtrar
Mais filtros










Base de dados
Intervalo de ano de publicação
1.
J Dev Econ ; 155: 102821, 2022 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-35241869

RESUMO

Government programs supporting self help groups (SHGs) generally target women on the assumption that doing so enhances women's decision-making. The empirical evidence, however, is mixed. We advance and test one explanation: the loan amounts offered by most SHGs may be too small to impact women. Our analysis is based on SHGs developed under India's National Rural Livelihoods Mission, a program that supported both small loans from internal savings and larger loans through Community Investment Funds (CIFs). Exploiting variation in their phasing and amount, we document a large effect of CIFs on women's decision-making and on intra-household allocations.

2.
Mater Sci Eng C Mater Biol Appl ; 67: 345-352, 2016 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-27287130

RESUMO

Beta-tricalcium phosphate (ß-TCP) was prepared by three different routes namely, wet chemical coprecipitation, sol-gel and solution combustion synthesis. The synthesized powders were calcined at different temperatures and characterized for phase evolution study, thermal analysis, Fourier transform infrared (FTIR) spectroscopy, microstructural study for comparative analysis. The optimal thermal treatment required to prepare pure ß-TCP powders was determined and after calcination of the synthesize powders prepared by different routes, pure ß-TCP was obtained. The sintering temperature required to prepare fully dense ß-TCP completely free from α-form was identified. The powders were then used to make dense and compact bodies sintered at 1200 and 1250°C. The sintering behaviour of the dense bodies was analysed using dilatometry, densification and microstructural study. It was found that the pellet prepared from powder synthesized via co-precipitation route attained maximum density compared to the pellets prepared from powders synthesized via sol-gel and solution combustion route.


Assuntos
Fosfatos de Cálcio/síntese química , Teste de Materiais/métodos , Materiais Biocompatíveis/farmacologia , Líquidos Corporais/efeitos dos fármacos , Varredura Diferencial de Calorimetria , Dureza , Pós , Espectroscopia de Infravermelho com Transformada de Fourier , Temperatura , Difração de Raios X
3.
Waste Manag Res ; 25(6): 566-71, 2007 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-18229751

RESUMO

Two industrial solid waste products generated by Indian coal-fired power plants, namely pond ash and fly ash, were used in combination with local clay to develop building bricks. The clay were mixed with the two different ashes in the range 10 to 90 wt.%, hydraulically pressed and fired at 1000 degrees C. The fired products were characterized for various quality properties required for building bricks. The properties of the optimal compositions were compared with conventional red clay bricks including the developed microstructures and the comparative study generally showed that te ash-clay bricks were of superior quality to the conventional products.


Assuntos
Silicatos de Alumínio/análise , Carbono/análise , Conservação dos Recursos Naturais , Materiais de Construção/análise , Resíduos Industriais/análise , Material Particulado/análise , Poluentes do Solo/análise , Argila , Cinza de Carvão , Índia , Tamanho da Partícula , Centrais Elétricas , Eliminação de Resíduos/métodos
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...