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只有折断的翅膀 没有折回的路程

去年年底,我国最大的国家大型科学仪器共建中心──北京离子探针中心,在中  (本文共3页) 阅读全文>>

权威出处: 科技日报2002-01-29
《Journal of Oceanology and Limnology》2019年02期
Journal of Oceanology and Limnology

The carotenoid characteristics of the important wild shrimp Trachysalambria curvirostris(Stimpson,1860) in China

Trachysalambria curvirostris is an economically important shrimp in the coastal waters of the Western Indo-Pacific. However, there is no information about its carotenoid composition and distribution.The carotenoid profiles including concentration, composition, molecular forms(free or esterified) and configuration(geometrical and optical isomers) of raw and dried T. curvirostris(Stimpson, 1860) were qualitatively and ...  (本文共7页) 阅读全文>>

《Acta Oceanologica Sinica》2017年02期
Acta Oceanologica Sinica

Heterosis and heritability estimates for the survival of the Pacific white shrimp(Litopenaeus vannamei) under the commercial scale ponds

The aim of the present study is to detect the potential of the base population from diallel crosses of eight introduced strains of the Pacific white shrimp(Litopenaeus vannamei) for improving the yield. Heterosis and heritability were estimated for pond survival at commercial farm conditions for the base population that included 207 full-sib families from a nested mating design by artificial insemination. Among all t...  (本文共7页) 阅读全文>>

《Journal of Zhejiang University(Science B:An International Biomedicine & Biotechnology Journal)》2009年08期
Journal of Zhejiang University(Science B:An International Biomedicine & Biotechnology Journal)

Prediction of shelled shrimp weight by machine vision

The weight of shelled shrimp is an important parameter for grading process.The weight prediction of shelled shrimp by contour area is not accurate enough because of the ignorance of the shrimp thickness.In this paper,a multivariate prediction model containing area,perimeter,length,and width was established.A new calibration algorithm for extracting length of shelled shrimp was proposed,which contains binary image thi...  (本文共6页) 阅读全文>>

《Journal of Zhejiang University Science》2006年04期
Journal of Zhejiang University Science

Effect of high intensity ultrasound on the allergenicity of shrimp

The tropomyosin fraction of shrimp proteins is potentially responsible for allergic reaction in individuals with genetic predisposition to allergy. However, there are no efficient and safe methods to reduce its allergenicity. High intensity ultrasound is known to change the structure of proteins. This study is aimed at assessing high intensity ultrasound’s effect on the allergenicity of shrimp allergen. Shrimp and pu...  (本文共6页) 阅读全文>>

《Chinese Journal of Oceanology and Limnology》2005年04期
Chinese Journal of Oceanology and Limnology

Closed recirculating system for shrimp-mollusk polyculture

This paper deals with a new system of aquaculture, i.e., a closed recirculating system for shrimp-mollusk polyculture. The culture system consisted of several shrimp ponds, a mollusk water-purifying pond and a reservoir. During the production cycle, water circulated between the shrimp and mollusk ponds, and the reservoir compensated for water loss from seepage and evaporation. Constricted tagelus, Sinonovacula con- s...  (本文共8页) 阅读全文>>