The first American historian--William Bradford

Thesis (M.A.)--Boston Universit

Silver: made in Scotland

This exhibition catalogue celebrates the glittering tradition of silversmithing in Scotland over seven centuries. This lavishly illustrated book unearths the stories behind the makers, objects and owners of the most exemplary pieces of silver, past and present - from the ‘mazer’, or communal drinking cup, linked with Robert the Bruce to the unique silver teapot crafted for Billy Connolly! Hallmarks, guaranteeing the honesty of the metal and maker alike, have been used in Scotland since the sixteenth century. The 550th anniversary of Scottish hallmarking in 2008 was celebrated with the Silver: Made in Scotland exhibition in the National Museums Scotland which gathered together for the first time all the most important examples of marked Scottish silver and gold, most from our unrivalled collection. The exhibition and Silver: Made in Scotland exhibition catalogue are concerned not only with silver and gold vessels, from earliest surviving marked examples right up to pieces made today, but also with the people who made them and the people for whom they were made. Objects, historic records, paintings, illustrations and contemporary accounts were combined to create a dazzling exhibition and the Silver: Made in Scotland book distils the exhibition, making it a must for silver enthusiasts and collectors everywhere

Pre-impoundment Limnological Study of the Strawberry River in Northeastern Arkansas

A study of pre-impoundment limnological characteristics of the Strawberry River was made from August, 1967 to June, 1968. Two collecting stations were established, one upstream which would not be inundated and a lower station which would be inundated when impoundment was complete. The Strawberry River was characterized by high alkalinity and pH, low carbon dioxide and turbidity, and adequate oxygen values. Plankton was characterized by limited numbers of Staurastrum, Gomphonema, and Rotatoria. Pool-riffle communities were ill-defined. Chironomidae, Oligochaeta and Ephemeroptera were dominant pool macroinvertebrates among 13 taxa collected. Of the 20 taxa collected in riffles Trichoptera, Ephemeroptera, Simuliidae and Chironomidae were the most numerous. Longitudinal zonation was characterized by an increase in species and numbers of pool benthic macroinvertebrates from headwater to downstream areas. Numerical standing crop was recorded for pools on 8 June 1968 and riffles on 30 September 1967. A total of 1979 fishes constituting 49 species were taken in this study. Station I and II pools yielded 242 and 185 fishes/ha respectively, Dorosoma cepedianum and Moxostoma erythrurum being the dominant forms. The substantial populations of Dorosoma cepedianum seemingly are supported by debris and allochthonous materials and not on the sparse plankton present. Station I and II riffles yielded 2896 and 1108 fishes/ha respectively, Etheostoma caeruleum and Percina caprodes being most numerous. Longitudinal zonation was characterized by decrease in number/ha and species present from headwater to downstream areas

Process for bonding elastomers to metals

A process for bonding elastomeric material to a metal part includes coating a heat curable adhesive on the surfaces of the metal part to be bonded. The metal part is placed in a mold, a bottom plate and an upper transfer pot of a transfer molding machine is preheated to a predetermined cure temperature. A predetermined quantity of uncured elastomeric material is loaded into the transfer pot. The mold containing the adhesive coated metal part is clamped to the bottom plate, and almost contemporaneously, the uncured elastomeric material is pressed into the mold while maintaining heat and pressure in the mold for a time sufficient to vulcanize and thereby cure the elastomeric material simultaneously with the adhesive, whereby contacting surfaces of the metal part are strongly bonded to the vulcanized elastomeric material

Med news

The Med News was a newsletter published from 1960-1962 by the Student American Medical Association (SAMA) at Boston University School of Medicine

BEYOND THE MODEL SPECIFICATION PROBLEM: MODEL AND PARAMETER AVERAGING USING BAYESIAN TECHNIQUES

The model specification problem is perhaps the Achilles heel of applied econometrics. Rather than test down to a single model as is usually done, we estimate 72 different demand systems and use Bayesian averaging procedures over all 72 systems to generate meta estimates of the parameters (e.g., elasticities) of interest.Research Methods/ Statistical Methods,

Hazardous materials emergency response mobile robot

A simple or unsophisticated robot incapable of effecting straight-line motion at the end of its arm inserts a key held in its end effector or hand into a door lock with nearly straight-line motion by gently thrusting its back heels downwardly so that it pivots forwardly on its front toes while holding its arm stationary. The relatively slight arc traveled by the robot's hand is compensated by a complaint tool with which the robot hand grips the door key. A visible beam is projected through the axis of the hand or gripper on the robot arm end at an angle to the general direction in which the robot thrusts the gripper forward. As the robot hand approaches a target surface, a video camera on the robot wrist watches the beam spot on the target surface fall from a height proportional to the distance between the robot hand and the target surface until the beam spot is nearly aligned with the top of the robot hand. Holes in the front face of the hand are connected through internal passages inside the arm to an on-board chemical sensor. Full rotation of the hand or gripper about the robot arm's wrist is made possible by slip rings in the wrist which permit passage of the gases taken in through the nose holes in the front of the hand through the wrist regardless of the rotational orientation of the wrist

Nitrogen fertilization of soybeans

Cover title.Digitized 2007 AES.Includes bibliographical references (page 23)