On the Reaction of the Mammalian Lung to Trauma

1. Mouse and rat lungs punctured by cold sterile needles show local atelectasis with a transient and reversible swelling of the alveolar lining cells. No evidence of the injury can be seen, by naked-eye or microscopically, a week later. 2. Burns of lung produced by heated needles are organised from a boundary or demarcation zone of lung tissue and converted to functioning lung by the ingrowth of bronchial branches from pre-existing bronchi. 3. Excision of wedges of lung tissue in cats is followed by local scarring and the ultimate reformation of lung tissue in the scar. This process occurs through bronchial proliferation together with alveolar formation in the margins of the scar, processes which depend primarily on the active motility of the lung

The Nub of an Automorphism of a Totally Disconnected, Locally Compact Group

To any automorphism, $\alpha$, of a totally disconnected, locally compact group, $G$, there is associated a compact, $\alpha$-stable subgroup of $G$, here called the \emph{nub} of $\alpha$, on which the action of $\alpha$ is topologically transitive. Topologically transitive actions of automorphisms of compact groups have been studied extensively in topological dynamics and results obtained transfer, via the nub, to the study of automorphisms of general locally compact groups. A new proof that the contraction group of $\alpha$ is dense in the nub is given, but it is seen that the two-sided contraction group need not be dense. It is also shown that each pair $(G,\alpha)$, with $G$ compact and $\alpha$ topologically transitive, is an inverse limit of pairs that have `finite depth' and that analogues of the Schreier Refinement and Jordan-H\"older Theorems hold for pairs with finite depth

Letter to Philander Chase

West sends a long letter in which he outlines the facts of how he complied with Chases\u27s requests and expectations.https://digital.kenyon.edu/chase_letters/1781/thumbnail.jp

Gravity Charger

According to a 2014 World Health Organization research initiative based on data collected from 14 global developing countries, “Only 28% of health facilities and 34% of hospitals had what could be called “reliable” access to electricity (without prolonged interruptions in one week)” [1]. Healthcare quality suffers because of this lack of reliable electricity. We propose that a gravity powered generator would stand as a reliable power source for small medical devices under any conditions at any location at any time of day. Our research examines how a gravity powered electric generator could best empower medical facilities in developing countries to provide improved healthcare. Our research has shown that most often, the greatest needs at these facilities are dependent upon an inadequate power supply, including lighting for emergency night-time care, refrigeration for blood and vaccines, facilities for sterilization, and electricity for simple medical devices [1]. We have chosen to focus on providing power for small devices as well as lighting. A successful charger must be lightweight, durable, and reliably provides dc power congruent with USB charging specifications. Testing has revealed a proof of concept, in that we were able to produce USB power from a mockup of the intended design, and further iterations of the charger will improve charge time per use. Initially, those seeking medical attention will be the main beneficiaries of our device; however, we expect the gravity generator project to expand if visitors see that our device could replace fossil or other solid fuel consuming device, such as kerosene lanterns, in their homes