Two hundred thirty-three leopard frogs (Rana pipiens) from Oshkosh, Wisconsin, USA, were divided into two groups and their blood examined for trypanosomes. In Group I (n = 157), where the blood was examined by the hematocrit centrifuge technique (HCT), 36 (23%) were infected with trypanosomes. Eighteen were infected with Trypanosoma pipientis, 13 with Trypanosoma ranarum, three with Trypanosoma...

This paper proposes an alternative mechanism of pile failure in liquefiable deposits during earthquakes. This failure mechanism, based on pile buckling, is formulated by back-analysing 14 case histories of pile foundation performance during earthquakes and verified using dynamic centrifuge tests. A new parameter, the slenderness ratio of a pile, is introduced to classify pile performance in liq...

We describe here a field method we developed for colorimetry of erythrocytic acetylcholinesterase (EC 3.1.1.7) in capillary blood samples. Three stable, premixed assay reagents and de-ionized water (but no centrifuge or balance) are required. This method, adapted for a microplate format, is essentially that of Ellman et al. (Biochem Pharmacol 1961;7:88-95) as modified by George and Abernethy (C...

Monopiles used as foundations for offshore wind turbines can be installed using different methods including jacking, vibratory driving and impact driving. Significant research efforts have been dedicated to the characterisation of monopile−soil interaction under lateral loading, mainly p–y curves. There has also extensive in quantifying effect installation on axial response numerical modelling ...

In a survey of potato and rotational crops on Prince Edward Island, Canada, the cyst stage of the clover cyst nematode, Heterodera trifolii, was found in 43 of 63 sites sampled; however, only 12% of the cysts contained eggs. The root lesion nematode, Pratylenchus penetrans, was the dominant plant parasitic nematode and was found in 56 sites. Extraction of cysts from soil was similar using eithe...

Systems and methods for robotic transport are disclosed herein. In some embodiments, robotic systems for transporting biological samples include: a plurality of capillary vessels, in which each capillary vessel can contain a biological sample from a population; a receptacle that can contain the plurality of capillary vessels; a centrifuge; a first robotic device that can transport the receptacl...