منابع مشابه
Video-rate functional photoacoustic microscopy at depths.
We report the development of functional photoacoustic microscopy capable of video-rate high-resolution in vivo imaging in deep tissue. A lightweight photoacoustic probe is made of a single-element broadband ultrasound transducer, a compact photoacoustic beam combiner, and a bright-field light delivery system. Focused broadband ultrasound detection provides a 44-μm lateral resolution and a 28-μm...
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Antarctic krill (Euphausia superba) is a large euphausiid, widely distributed within the Southern Ocean [1], and a key species in the Antarctic food web [2]. The Discovery Investigations in the early 20(th) century, coupled with subsequent work with both nets and echosounders, indicated that the bulk of the population of postlarval krill is typically confined to the top 150 m of the water colum...
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Linking China’s interest in the maritime waters arises from the geo-strategic importance of Sea Lines of Communications (SLOCs) vital to the oil supply of the country. China is building strategic relationships and developing a naval capability to establish a forward presence along the SLOCs that connect China to the Middle East and to Africa. The entire stretch includes South China Sea, Indian ...
متن کاملSome ecological indices of the Caspian Sea Amphipoda at the different depths Guilan offshore
In the present study, some ecological factors were studied for Amphipoda at different depths. The Shannon, Margalef, and Hill indices were used to determine the species diversity, richness and evenness, respectively. In addition, the association and niche overlap values were estimated. Indices of species richness and diversity were highest at 50 and 100m depths, respectively. The or...
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Geant4 has been used to estimate the rate, energy spectrum and angular distribution of cosmic ray muons at underground depths between 300 and 1000 m.w.e. The results agree well with those from the MUSIC program when the same surface spectrum is used. Care has been taken to use a parameterization of the surface spectrum which agrees well with data for the relevant energies. 1 Goals Knowledge of ...
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ژورنال
عنوان ژورنال: Nature
سال: 1933
ISSN: 0028-0836,1476-4687
DOI: 10.1038/132229a0