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Underwater Sonar equipment combined with enhanced CCTV provides an ideal engineering tool to inspect and assess large diameter sewers with high flow conditions. Using high frequency, rotating Sonar technology the full wetted perimeter of the sewer can be scanned and assessed. Combined with simultaneously retrieved CCTV images a comprehensive structural and(More)
The strongest susceptibility genes for the development of systemic lupus erythematosus (SLE) in humans are null mutants of classical pathway complement proteins. There is a hierarchy of disease susceptibility and severity according to the position of the missing protein in the activation pathway, with the severest disease associated with C1q deficiency.(More)
Similarities in the behavior of diverse animal species that form large groups have motivated attempts to establish general principles governing animal group behavior. It has been difficult, however, to make quantitative measurements of the temporal and spatial behavior of extensive animal groups in the wild, such as bird flocks, fish shoals, and locust(More)
We describe the Hox cluster in the radially symmetric sea urchin and compare our findings to what is known from clusters in bilaterally symmetric animals. Several Hox genes from the direct-developing sea urchin Heliocidaris erythrogramma are described. CHEF gel analysis shows that the Hox genes are clustered on a < or = 300 kilobase (kb) fragment of DNA,(More)
INTRODUCTION Fish populations often comprise the largest biomass component in a productive marine ecosystem. They typically play an essential role in inter-trophic energy transport (Cury et al. 2001), and serve as a mainstay for human consumption comprising roughly 16% of the animal protein consumed by the world's population (FAO 1997). Despite their(More)
The low-frequency target strength of shoaling Atlantic herring (Clupea harengus) in the Gulf of Maine during Autumn 2006 spawning season is estimated from experimental data acquired simultaneously at multiple frequencies in the 300-1200 Hz range using (1) a low-frequency ocean acoustic waveguide remote sensing (OAWRS) system, (2) areal population density(More)
An analytic model is developed for scattering from random inhomogeneities in range-dependent ocean waveguides using the Rayleigh-Born approximation to Green's theorem. The expected scattered intensity depends on statistical moments of fractional changes in compressibility and density, which scatter as monopoles and dipoles, respectively, and the coherence(More)
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. The low-frequency target strength of shoaling Atlantic herring ͑Clupea(More)
A second wave of potential SSRIs with high ease of synthetic accessibility were designed based on the reported selective serotonin re-uptake inhibitor litoxetine and our own previous work in this area. Preparation and subsequent optimisation yielded a range of potent and highly selective SSRIs.
and has a surface area of about 923,000 km². Its human population is currently put at over 100 million with a growth-rate estimated at about 3% per annum. Administratively, the country is divided into 36 States and a Federal Capital Territory. The states are further divided into over 770 Local Government Areas. Except for the mountainous eastern(More)