Geologic Considerations in Relation to a Materials Survey

In materials surveying, geology should be of maximum benefit, not as a complete informant but as a foundation for reconnaissance, assembly, and cataloging of materials. Geology in essence is a materials survey on a grand scale. Use of this science for engineering purposes involves some primary knowledge of geologic nomenclature, the basic historic approach of geologists, and the use of resources and data published by state, federal, and private agencies over a period of 75 years. Recognition of the need for information on surface conditions as an aid to engineering and allied sciences is emphasized; and in response to this need, a new system of U.S.G.S. mapping is cited and illustrated in which a special map of surficial geology is prepared in conjunction with the traditional bedrock geologic maps. The importance and the difficulty of converting geologic data to engineering uses are considered, and in lieu of a universally satisfactory means for accomplishing this, a few specific conversions are discussed and illustrated. Each is considered separately from the standpoint of possible materials requirements and the application of geologic methods to the location of usable materials

Aloha and Beaverton survey of optometric care at the Pacific University Family Vision Centers

A random telephone survey was conducted in Aloha and Beaverton to determine the public\u27s perception of the Pacific University Family Vision Centers located in Forest Grove and Portland, Oregon. Patients\u27 satisfaction with care, familiarity with the Centers, and how they learned of the Centers were studied. Age, occupation, income, current eyecare provider, and distance willing to travel for eyecare were also factors considered. The results indicated that quality was the most important factor in selection of eyecare providers, and word of mouth was the method most often utilized in that selection

A Laboratory Investigation of Mineralogical, Chemical and Physical Properties of Limestone Aggregates

The project described in this report represents one phase of comprehensive research with all types of aggregates for highway paving mixtures in Kentucky. It was designed to show the fundamental properties of limestones which determine their suitability for this type of use -- particularly their so-called durability. For this reason, emphasis was placed on analysis of the intrinsic properties of the aggregates themselves rather than analysis of procedures or test methods, such as freezing and thawing

The Adsortpion of CO, N2 and Li on Ru(109) and Ru(001)

The chemistry of carbon monoxide and dinitrogen on an atomically stepped Ru(109) and an atomically smooth Ru(001) single crystal surface have been thoroughly investigated using ultra high vacuum and surface science techniques. The investigations focused on the effect of the metal surface morphology on the simplest of the surface reactions: adsorption, desorption, and dissociation.Building on the previous conclusion that CO dissociates on the step sites of Ru(109) producing mobile atomic C and O species, chemisorbed CO was bombarded with atomic hydrogen in an attempt to produce and spectroscopically observe a formyl, HCO, species by IRAS and TPD. The interaction of the two species did not produce any evidence of an HCO species, but resulted in the observation of surface crowding of the CO(a) by H(a) species.The step sites of Ru(109) have been found to exhibit special N₂ adsorption characteristics compared to the terraces of the Ru(109) surface. Nitrogen desorbs from Ru(109) in three distinct desorption processes. A high temperature desorption feature has been assigned to the molecular desorption from the atomic step sites. The electron stimulated dissociation of chemisorbed nitrogen results in a high temperature recombinative desorption feature between 400 and 800 K. A direct comparison of the vibrational behavior of nitrogen on Ru(109) and Ru(001) confirms the postulate that the step sites of single crystals exhibit special characteristics. Two vibrational bands, attributed to molecular nitrogen adsorbed on the terrace and step sites, respectively, are observed after thermal ordering of the adlayer. Nitrogen adsorbed on the terraces of the Ru(109) surface is adsorbed more strongly than on the atomically smooth Ru(001) as indicated by the lower singleton frequency on the Ru(109) surface and the lower maximum desorption temperature on the Ru(001) surface. The interaction of adsorbed species with Li promoter atoms was investigated to determine the effect promoter atoms would have on catalytic reactions. The coadsorption of Li with CO and N₂ on the two Ru surfaces results in both short and long range interactions. These interactions result in a weakened molecular bond characterized by a red-shifted vibrational frequency in addition to complex formation on the surface

Fishes of the Charlotte Harbor Estuarine System, Florida

To date, 255 fish species in 95 families have been reliably reported from the Charlotte Harbor estuarine system in southwest Florida. The species list was compiled from recent fishery-independent collections, a review of reports and peer-reviewed literature, and examination of cataloged specimens at the Florida Museum of Natural History. Thirty-nine species are new records for this estuarine system. Many of the newly documented species are common on the west Florida continental shelf and associated inshore habitats. Twenty-two previously reported species were not included in the species list presented herein on the basis of more recent research, doubtful original identifications, or questionable locality data

REVIEW OF BUSINESS AND ECONOMIC CONDITIONS

The State of Alask