Potamogeton illioensis New to Mackenzie District

DNA barcoding reveals a new record of Potamogeton distinctus (Potamogetonaceae) and its natural hybrids, Potamogeton distinctus × Potamogeton nodosus and Potamogeton distinctus × Potamogeton wrightii (Potamogeton ×malainoides) from Myanmar

Indo-China floristic region is among the 34 richest floristic regions of the world, and its plant diversity is still under investigation. Here we report a new record of an aquatic plant, Potamogetondistinctus, from Myanmar, a part of the region, that is detected by means of DNA barcoding method. The molecular method further identified the other specimens as hybrids of Potamogeton: one is Potamo...

Looking Back to Mackenzie.

RAMPING UP TO Multiscale BY DANA MACKENZIE TAKING BIOMEDICAL MODELING TO A NEW LEVEL

F or centuries, mathematics has been an indispensable ally of the physical sciences and engineering. Planes fly and telephones work because engineers know how to simplify physical systems into convenient mathematical models. But biologists and mathematicians have had a harder time communicating. As the old joke says, when you ask a mathematician to explain why a cow isn’t producing milk, he’ll ...

Sir James Mackenzie and atrial fibrillation--a new perspective.

T^OTAL irregularity of the pulse was known to the ¦* ancients, but the relationship of the pulse to the heart beat was often debated; indeed, Abercromby (1685) said that "the origin of the pulse is as mysterious as the source of the Nile". These uncertainties were abolished after Laennec (1816) had introduced the stethoscope and auscultation, when the audible rhythm of the heart and palpation o...

Miss Jean Mackenzie

iV whom the duties of Statutory Supervision under the Mental ^enciency Acts were being carried on for the London County Council, and this work gave her an intimate knowledge of the needs of mentally handicapped children and the value of Occupation Centres. In 1932 she came to the Central Association for Mental Welfare to fill the post of Case Secretary. Later she became Education Secretary when...