scholarly journals Capacitance sensors for nondestructive moisture determination in grain, nuts and bio-fuel materials

Author(s):  
C. V. Kandala ◽  
N. Puppala
2002 ◽  
Vol 82 (2) ◽  
pp. 401-405
Author(s):  
N. A. Fairey

Seed of four grass species was re-hydrated to 11 pre-determined moisture concentrations ranging from 100 to 600 g kg-1 fresh weight ( FW) to simulate seed maturation during swathing and combining. The performance characteristics of three thermogravimetric and two electronic capacitance methods of moisture determination were evaluated. The thermogravimetric methods had no moisture range limitations and were, in general, more accurate than the electronic methods. The thermogravimetric Koster tester is suitable for grass seeds of all moisture concentrations, and can be easily adapted for use at field sites. The John Deere Moisture- Chek electronic tester is suitable for the rapid determination of moisture in grass seeds but is limited to concentrations of 80–250 g kg-1 FW. Key words: Grass seed crops, seed moisture measurement, swathing, combining, time of harvest


1944 ◽  
Vol 36 (5) ◽  
pp. 461-463
Author(s):  
E. E. Down ◽  
J. W. Thayer ◽  
E. Vander Meulen

2021 ◽  
Vol 4 (2) ◽  
pp. 1642-1647
Author(s):  
Marilza Machado ◽  
Nathalya Machado De Souza ◽  
Diones Krinski ◽  
Gabriela Granghelli Gonçalves ◽  
Lin Chau Ming

A determinação da umidade das sementes pode auxiliar na preservação de espécies florestais, pois a umidade é um dos fatores que influenciam no processo de deterioração das sementes. Assim, o objetivo desse trabalho foi definir o teor de umidade de sementes de Ficus adhatodifolia armazenadas por mais de dois anos no Laboratório de Sementes da UNESP/Botucatu/SP. Para isso, utilizamos o método de estufa proposto nas Regras de Análise de Sementes. O teor de umidade para sementes de F. adhatodifolia foi de 8,50 ± 0,16%, indicando que estas sementes podem estar em boa qualidade para serem utilizadas na propagação da espécie, pois para armazenamentos por períodos maiores que 12 meses, a literatura relata que as sementes devem apresentar teores de umidade inferiores a 11%, como podemos verificar em nosso estudo. Mesmo assim, o teste de germinação deve ser realizado para verificar a qualidade das sementes armazenadas.


Author(s):  
Nurul Zuhairah Mahmud Zuhudi ◽  
Afiq Faizul Zulkifli ◽  
Muzafar Zulkifli ◽  
Ahmad Naim Ahmad Yahaya ◽  
Nurhayati Mohd Nur ◽  
...  

In this paper, a short review on the void and moisture content studies of fiber reinforced composites for both, synthetic and natural based fibers are presented. The review summarized the research papers in which include experimental and theoretical works that related to the void and moisture content studies. In addition to that, this review paper highlighting a few research studies conducted in literature on the effects of the void and moisture on the mechanical performances of the composite. Few common measurement methods used for the void and moisture determination are discussed here. The aims of this short review, mainly to capture the trend ranging from the recent five years back and summarize the various studies and also to compare and conclude the most common method for the determination of the void and moisture content. This paper is mainly providing a baseline in the selection of the methods for the future work of the author’s work with regard to the reduction of the presence of voids and moisture occur during the impregnation process of fiber reinforced composites, especially when using natural-based fiber.


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