170 research outputs found

    Bank credit and economic activity

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    Bank loans ; Vector autoregression ; Supply and demand ; Monetary policy - United States

    An investigation of the deformation textures of cobalt

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    Deformation textures of various cobalt structures as a result of cold rolling together with some annealing textures were studied. The textures of cobalt were determined using a modification of the Schulz-Decker Geiger counter technique. Pole figures of the (1011), (0001) and (1010) planes were constructed. Also, a study of the microhardness of cobalt was made. Microhardness tests were performed on various cobalt structures, in both the cold rolled and unworked conditions. The microhardness was found to vary with the source of the cobalt, the crystal orientation, and the amount of deformation and twinning. Deformation lines about the hardness impressions diffused and became broader with time, indicating that partial self-relief of the imposed stress may take place. Textures of electrodeposited cobalt in (1) the as- deposited condition; (2) cold rolled eight percent without an initial anneal; and (3) cold rolled twenty percent with an initial anneal above the allotropic transformation were studied. Electrodeposited cobalt was found to have mainly a [1010] texture with a large spread toward a [1120] texture. The texture of the deposited cobalt with eight percent reduction by rolling was unchanged from the original texture. However, twenty percent reduction by rolling after annealing above the allotropic transformation produced a (0001) \u3c1120\u3e texture with partial retention of the original [1010] texture. The texture of the as-deposited cobalt could not be completely destroyed by heat treatment. Cold-rolled textures of sintered cobalt powders and annealed sponge were determined. The textures of both were practically the same. The texture can be described as (0001) \u3c1120\u3e in which the (0001) planes are rotated twenty to twenty-five degrees in the rolling direction from the rolling plane normal with the \u3c1120\u3e directions rotated twenty to twenty-five degrees in the transverse direction. The textures obtained are representative of cobalt textures up to approximately fifty or sixty percent reduction. The deformation textures of cobalt were examined theoretically by the Calnan and Clews method of texture analysis. From these theoretical considerations, the deformation mechanisms occuring during cold rolling of cobalt were determined to be (0001) [1120] slip and {1012} twinning. A study of these deformation mechanisms in tension and compression allowed a theoretical (0001) pole figure to be constructed. The construction of this pole figure was made from considerations of the rotations involved in tension and compression during deformation. Annealing textures of rolled electrodeposited cobalt were also studied. The temperatures used were 385°F and 720°F, the latter being above the recrystallization range but below the allotropic transformation. The textures resulting from the annealed rolled as-deposited cobalt are not representative of annealing textures because of the partial retention of the as-deposited texture throughout all the physical operations performed on the material --Introduction, pages 1-3

    Colonial National Historic Park Shoreline Management Plan: Phase II York River Shoreline and Swanns Point, James River Shoreline

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    This report presents a comprehensive shoreline management plan for Colonial National Historical Park (COLO) along its York River coast. In addition, COLO property at Swanns Point on the James River was addressed (Figure 1-1). The shoreline controlled by the U.S Naval Weapons Station on the York River is included in the overall reach analyses but not in the management plan recommendations. The plan addresses the mutual desires of state and federal agencies to improve water quality and enhance wetland habitat in Chesapeake Bay while preventing the loss of significant cultural and natural resources. Shoreline processes, past, present, and future, and the ways they relate to hydrodynamic forcing are a main component of this study.Generally, the entire COLO shoreline on the James and York Rivers is subject to wind driven, wave forces that cause moderate to severe shoreline erosion. Numerous shoreline structures, such as stone revetments and seawalls, have been installed over the years to protect upland improvements from erosion;however, the unprotected shorelines continue to erode, and, under extreme storm conditions such as occurred in September 2003 during the passage of Hurricane Isabel, even protected shores were impacted.This study develops a management plan that puts the natural process of shoreline erosion into perspective as to potential long-term impacts to cultural and natural living and non-living resources. Specific goals of COLO will be incorporated into the analyses in order to produce a shoreline management plan

    Encroachment of Sills onto State-Owned Bottom: Design Guidelines for Chesapeake Bay

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    Recent efforts have sought to expand the use of “Living Shorelines” by waterfront property owners in Virginia and Maryland to combat tidal shoreline erosion. Living shorelines represent a shoreline management option that combines various erosion control methodologies and/or structures while at the same time restoring or preserving natural shoreline vegetation communities. Some regulatory agencies and non-governmental organizations prefer living shorelines over “traditional” shore hardening using bulkheads or stone revetments because these structures create a “barrier” or disconnect between the upland and marine environments. Typically, creation of a living shoreline involves the placement of sand, planting marsh flora, and, if necessary, construction of a rock structure on the shoreline or in the nearshore (Figure 1). When any type of material, sand and/or rock, is placed below/beyond mean high water (MHW) two situations could occur: 1) encroachment onto regulated lands necessitates a permit and 2) one habitat is traded for another -- non-vegetated wetlands and/or nearshore bottom for marsh fringe and rocky substrate. Encroachment beyond mean low water (MLW) in Virginia (MHW in Maryland) is onto state-owned bottom. This latter point is of concern to the Virginia Marine Resources Commission (VMRC) which manages this region. Its concern is the determination of how much encroachment onto public state bottom is necessary for a shore protection project. The Virginia Chesapeake Bay Local Assistance Program (CBLA) regulates the area above MHW and the landward limit of tidal wetlands. They are concerned about how much encroachment landward is required for bank stabilization. The goal of this report is to offer some guidance toward these concerns, most particularly as it pertains to state bottom. Specifically, it is the intent of this report to look at encroachment primarily bayward of MHW/MLW for sill-type systems installed for shore protection

    Role of cephalosporins in the era of Clostridium difficile infection

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    The incidence of Clostridium difficile infection (CDI) in Europe has increased markedly since 2000. Previous meta-analyses have suggested a strong association between cephalosporin use and CDI, and many national programmes on CDI control have focused on reducing cephalosporin usage. Despite reductions in cephalosporin use, however, rates of CDI have continued to rise. This review examines the potential association of CDI with cephalosporins, and considers other factors that influence CDI risk. EUCLID (the EUropean, multicentre, prospective biannual point prevalence study of CLostridium difficile Infection in hospitalized patients with Diarrhoea) reported an increase in the annual incidence of CDI from 6.6 to 7.3 cases per 10 000 patient bed-days from 2011–12 to 2012–13, respectively. While CDI incidence and cephalosporin usage varied widely across countries studied, there was no clear association between overall cephalosporin prescribing (or the use of any particular cephalosporin) and CDI incidence. Moreover, variations in the pharmacokinetic and pharmacodynamic properties of cephalosporins of the same generation make categorization by generation insufficient for predicting impact on gut microbiota. A multitude of additional factors can affect the risk of CDI. Antibiotic choice is an important consideration; however, CDI risk is associated with a range of antibiotic classes. Prescription of multiple antibiotics and a long duration of treatment are key risk factors for CDI, and risk also differs across patient populations. We propose that all of these are factors that should be taken into account when selecting an antibiotic, rather than focusing on the exclusion of individual drug classes

    Ursinus College Alumni Journal, March 1958

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    What is college for? • Founders\u27 Day ceremonies honor Dean Camilla B. Stahr • Library receives grant • Chemistry Department receives DuPont grant • Women\u27s dormitory group dedicated • Dedication service • Language and the liberal arts • Ursinus Woman\u27s Club • New York area alumni change Spring dinner date • Alumni Day Saturday, June 7, 1958 • Reunion Committee chairmen • Lehigh Valley alumni to meet April 25 • May Day activities • January 1958 report of the Loyalty Fund campaign • Alumni funds in thirteen Pennsylvania colleges • Mid-year Loyalty Fund report • Philadelphia alumni hold fifth annual dinner dance • New Ursinus College alumni directory 1949-1957 • The Ursinus chair • Washington alumni plan banquet Friday, May 23, 1958 • Longacre scholarship • July issue: Alumni Journal • Winterthur Museum included in History Department curriculum • The campus song • Alumni elections • Soccer 1957 • Alumnae hockey team goes undefeated • Aucott, Stadler and Gros secure All American honors • Varsity Belles complete successful season • Football 1957 • Wrestling 1958 • News about ourselves • Weddings • Births • Necrology • Two chemical corporations announce gift matching programs • Collegeville alumni in local politics • 20th anniversary Messiahhttps://digitalcommons.ursinus.edu/alumnijournal/1061/thumbnail.jp

    Genetic Determinants of Facial Clefting: Analysis of 357 Candidate Genes Using Two National Cleft Studies from Scandinavia

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    Facial clefts are common birth defects with a strong genetic component. To identify fetal genetic risk factors for clefting, 1536 SNPs in 357 candidate genes were genotyped in two population-based samples from Scandinavia (Norway: 562 case-parent and 592 control-parent triads; Denmark: 235 case-parent triads).We used two complementary statistical methods, TRIMM and HAPLIN, to look for associations across these two national samples. TRIMM tests for association in each gene by using multi-SNP genotypes from case-parent triads directly without the need to infer haplotypes. HAPLIN on the other hand estimates the full haplotype distribution over a set of SNPs and estimates relative risks associated with each haplotype. For isolated cleft lip with or without cleft palate (I-CL/P), TRIMM and HAPLIN both identified significant associations with IRF6 and ADH1C in both populations, but only HAPLIN found an association with FGF12. For isolated cleft palate (I-CP), TRIMM found associations with ALX3, MKX, and PDGFC in both populations, but only the association with PDGFC was identified by HAPLIN. In addition, HAPLIN identified an association with ETV5 that was not detected by TRIMM.Strong associations with seven genes were replicated in the Scandinavian samples and our approach effectively replicated the strongest previously known association in clefting--with IRF6. Based on two national cleft cohorts of similar ancestry, two robust statistical methods and a large panel of SNPs in the most promising cleft candidate genes to date, this study identified a previously unknown association with clefting for ADH1C and provides additional candidates and analytic approaches to advance the field

    Influences of seasonality and habitat quality on Great Lakes coastal wetland fish community composition and diets

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    Great Lakes coastal wetlands (GLCW) have been severely degraded by anthropogenic activity over the last several decades despite their critical role in fish production. Many Great Lakes fish species use coastal wetland habitats for spawning, feeding, shelter, and nurseries throughout the year. The goal of our study was to compare GLCW fish community composition in the spring, summer, and fall months and investigate how water quality relates to fish diversity, the presence of functional groups, and juvenile fish diets. We summarized fish data collected from GLCW across the basin and used the coastal wetland monitoring program’s water quality-land use indicator to quantify water quality. Basin-wide, we found taxonomic and functional group differences in community composition among three sampling seasons, as well as across the range of water quality. Water quality was positively associated with the abundance of small cyprinids and the relative abundance of some habitat and reproductive specialists. Seasonal differences were also observed for many of these functional groups, with more temperature- and pollution- sensitive fishes captured in the spring and more nest-spawning fishes captured in the summer and fall. In our diet study, we found that age-0 fish primarily consumed zooplankton in the fall, whereas age-1 fish primarily consumed macroinvertebrates in the spring. Moreover, wetland quality was positively associated with trichopteran prey abundance. We concluded that taxonomic and functional composition of fish communities in GLCW vary markedly with respect to water quality and season. Thus, a full understanding of communities across a gradient of quality requires multi-season sampling

    Compendium of Single Event Effect Results from NASA Goddard Space Flight Center

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    We present the results of single event effects (SEE) testing and analysis investigating the effects of radiation on electronics.This paper is a summary of test results
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