A comprehensive assessment of stream fragmentation in Great Britain

Fragmentation and drying ratchet down Great Plains stream fish diversity

1. Stream fragmentation alters the structure of aquatic communities on a global scale, generally through loss of native species. Among riverscapes in the Great Plains of North America, stream fragmentation and hydrologic alteration (flow regulation and dewatering) are implicated in the decline of native fish diversity. 2. This study documents the spatio–temporal distribution of fish reproductiv...

Maternity in Great Britain

Here is a comprehensive study of nearly 14,000 cases of births during the week beginning March 3rd, 1946. The enquiry was sponsored by the Joint Committee of the Royal College of Obstetricians and Gynaecologists and the Population Investigation Committee, under the chairmanship of Professor James Young. Antenatal supervision, the places of confinement, and care during confinement, the relief of...

Printed in Great Britain

Stopped-flow spectrophotometry and e.p.r. spectroscopy were used to study the kinetics of reduction by dithionite of the oxidized Fe protein of nitrogenase from Klebsiella pneumoniae (Kp2.0 ) in the presence of MgADP at 230C at pH7.4. The active reductant, SO2-, produced by the predissociation of S2042= 2SO2-, reacts with Kp20. (MgADP),, with k 3.0 x 106 + 0.4 x 106 M-l' s-1. The inhibition of ...

Work in Great Britain

Up to the present in this country there has not been a great deal of systematized work done along the lines of child guidance. On the medical side much attention has been paid to the problem of mental deficiency, but with this child guidance has little or nothing to do, except in so far as it may be necessary to recognize the mental defective who comes to the clinic and transfer him to the care...

Maternity in Great Britain