Assessment of oxidative stress and histopathology in juvenile northern pike (Esox lucius) inhabiting lakes downstream of a uranium mill

International Nuclear Information System (INIS)

Kelly, Jocelyn M.; Janz, David M.

2009-01-01

Lakes receiving effluent from the Key Lake uranium mill in northern Saskatchewan contain elevated trace metals, some of which are associated with increased reactive oxygen species (ROS) in cells and tissues causing oxidative stress. The potential for oxidative stress was assessed in juvenile (age 1+) northern pike (Esox lucius) collected from two exposure (high and low) and one reference lake near the Key Lake operation. The concentrations of total, reduced and oxidized glutathione and the ratio of oxidized to reduced glutathione in liver and kidney did not differ significantly among pike collected from exposure and reference lakes, with the exception of low exposure pike kidney that had significantly greater oxidized glutathione and ratio of oxidized to reduced glutathione. The concentrations of by-products of lipid peroxidation (malondialdehyde and 4-hydroxyalkenal) were significantly greater in kidney of pike collected from the reference lake compared to both exposure lakes. The activity of the antioxidant enzyme glutathione peroxidase in liver was greater in pike collected from the high exposure lake compared to the reference lake. Histopathological evaluations revealed greater pathology in reference lake pike as indicated by a greater number of pyknotic and fragmented nuclei and dilated tubules as well as a thickening of Bowman's capsule in kidney, and as a thickening of the primary filament epithelial padding in gills. In liver, hepatocyte morphology, including transsectional area and degree of vacuolation, differed among lakes without any clear signs of pathology. Trace metal analyses of muscle showed that eight elements (arsenic, cobalt, copper, iron, molybdenum, selenium, thallium, and uranium) were significantly elevated in pike collected from both exposure lakes compared to reference. These results provide only limited evidence of oxidative stress in exposure pike tissues and no evidence of histopathology despite indications that trace metals, most

Microsatellite DNA analysis of northern pike ( Esox lucius L.) populations: insights into the genetic structure and demographic history of a genetically depauperate species

DEFF Research Database (Denmark)

Jacobsen, B. H.; Hansen, Michael Møller; Loeschcke, V.

2005-01-01

The northern pike Esox lucius L. is a freshwater fish exhibiting pronounced population subdivision and low genetic variability. However, there is limited knowledge on phylogeographical patterns within the species, and it is not known whether the low genetic variability reflects primarily current...... low effective population sizes or historical bottlenecks. We analysed six microsatellite loci in ten populations from Europe and North America. Genetic variation was low, with the average number of alleles within populations ranging from 2.3 to 4.0 per locus. Genetic differentiation among populations...... was high (overall theta(ST) = 0.51; overall rho(ST) = 0.50). Multidimensional scaling analysis of genetic distances between populations and spatial analysis of molecular variance suggested a single phylogeographical race within the sampled populations from northern Europe, whereas North American...

West Pike Story: a dated phylogeography of Esox spp. (Actinopterygii, Esocidae

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Gael P. J. Denys

2015-11-01

The results distinguish the 3 pike species as well as the 3 lineages of E. lucius from Skog et al. (2014. The presence of individuals from the South-European and circumpolar lineages might result from stocking operations. Finally, molecular dating with reanalysis old fossil calibrations places the European pikes diversification during the late Miocene (E. aquitanicus vs. the others, the late Pliocene (E. cisalpinus vs. E. lucius, and the Pleistocene ice ages (E. lucius lineages. Pike restocking should take into account the genetics of the fish in order to preserve these species with high economical and patrimonial value.

Effects of angling and manual handling on pike behaviour investigated by high-resolution positional telemetry

DEFF Research Database (Denmark)

Baktoft, Henrik; Aarestrup, Kim; Berg, Søren

2013-01-01

Human disturbances such as angling and manual handling may have long-term effects on the behaviour of pike, Esox lucius L., an ecologically important species. Using continuous high-resolution positional telemetry, this study compared the swimming activity of handled and unhandled pike in a small...

Marking pike fry otoliths with alizarin complexone and strontium : an evaluation of methods

DEFF Research Database (Denmark)

Skov, Christian; Grønkjær, P.; Nielsen, C.

2001-01-01

Laboratory experiments demonstrated that both alizarin complexone and strontium are useful in mass marking of pike Esox lucius fry otoliths. Visual detection of alizarin complexone marks was considered more reliable than the quantitative analysis of strontium for differentiating marked and unmarked...

DYNAMICS OF PIKE (ESOX LUCIUS LINNAEUS, 1758 AGE STRUCTURE IN THE DNIEPER LOWER REACHES IN CONNECTION WITH FISHING

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K. Geina

2015-03-01

Full Text Available Purpose. To analyze the dynamics of pike (Esox luceus Linnaeus, 1758 age structure of the Dnieper lower reaches in conditions of the modification of fishing pressure. Methodology. An analysis of fishing situation has been performed based on data of official fishery statistics. Fish sampling was done at control-observation posts of the Institute of Fisheries of the NAAS of Ukraine and directly in the fishery. Juvenile fish yield was determined using a complex of fry fishing gears using a stationary net-station. Field and cameral processing of the material was performed using generally accepted methods. Findings. A retrospective analysis of the situation in the Dnieper-Bug lower reach system clearly indicates on the presence of continuous tendency of catch decline of representative of native fish fauna – pike. With relatively uniform indices of the “yield” of its juveniles before Dnieper flow impoundment and in conditions of present time, its commercial catches significantly dropped. The dynamics of pike current age structure indicates on an increase of relative density of age groups, which form the recruitment of the commercial portion of the population (1-1+ and a decrease of importance of the component of the right side of age series. A discrepancy between the observed changes of the age group and commercial harvest quantities indicates on increased human pressure on this species. Originality. For the first, we analyzed the dynamics of fish juvenile “yield” and age structure of pike commercial stock of the Dnieper lower reaches in the river flow transformation process. Practical value. A decrease of the ichthyomass of piscivorous fishes in the Dnieper lower reaches results in changes of fish populations of littoral biotopes towards the prevalence of the dominance of coarse species that lead to a deterioration of forage availability for a number of valuable commercial species. An increase of the number of pike can regulate the strain

Higher-order organisation of extremely amplified, potentially functional and massively methylated 5S rDNA in European pikes (Esox sp.).

Science.gov (United States)

Symonová, Radka; Ocalewicz, Konrad; Kirtiklis, Lech; Delmastro, Giovanni Battista; Pelikánová, Šárka; Garcia, Sonia; Kovařík, Aleš

2017-05-18

Pikes represent an important genus (Esox) harbouring a pre-duplication karyotype (2n = 2x = 50) of economically important salmonid pseudopolyploids. Here, we have characterized the 5S ribosomal RNA genes (rDNA) in Esox lucius and its closely related E. cisalpinus using cytogenetic, molecular and genomic approaches. Intragenomic homogeneity and copy number estimation was carried out using Illumina reads. The higher-order structure of rDNA arrays was investigated by the analysis of long PacBio reads. Position of loci on chromosomes was determined by FISH. DNA methylation was analysed by methylation-sensitive restriction enzymes. The 5S rDNA loci occupy exclusively (peri)centromeric regions on 30-38 acrocentric chromosomes in both E. lucius and E. cisalpinus. The large number of loci is accompanied by extreme amplification of genes (>20,000 copies), which is to the best of our knowledge one of the highest copy number of rRNA genes in animals ever reported. Conserved secondary structures of predicted 5S rRNAs indicate that most of the amplified genes are potentially functional. Only few SNPs were found in genic regions indicating their high homogeneity while intergenic spacers were more heterogeneous and several families were identified. Analysis of 10-30 kb-long molecules sequenced by the PacBio technology (containing about 40% of total 5S rDNA) revealed that the vast majority (96%) of genes are organised in large several kilobase-long blocks. Dispersed genes or short tandems were less common (4%). The adjacent 5S blocks were directly linked, separated by intervening DNA and even inverted. The 5S units differing in the intergenic spacers formed both homogeneous and heterogeneous (mixed) blocks indicating variable degree of homogenisation between the loci. Both E. lucius and E. cisalpinus 5S rDNA was heavily methylated at CG dinucleotides. Extreme amplification of 5S rRNA genes in the Esox genome occurred in the absence of significant pseudogenisation

Seasonal and diel effects on the activity of northern pike studied by high-resolution positional telemetry

DEFF Research Database (Denmark)

Baktoft, Henrik; Aarestrup, Kim; Berg, Søren

2012-01-01

, a detailed understanding of the behaviour of this species during winter is important. We continuously monitored the activity of adult northern pike (Esox lucius) in a small temperate lake from late summer to winter for two consecutive years using an automatic acoustic positional telemetry system. Four...

The northern pike, a prized native but disastrous invasive: Chapter 14

Science.gov (United States)

Rutz, David; Massengill, Robert L.; Sepulveda, Adam; Dunker, Kristine J.

2018-01-01

As the chapters in this book describe, the northern pike Esox lucius Linneaus, 1758 is a fascinating fish that plays an important ecological role in structuring aquatic communities (chapter 8), has the capacity to aid lake restoration efforts (chapter 11), and contributes substantially to local economies, both as a highlysought after sport fish (chapter 12) and as a commercial fishing resource (chapter 13). However, despite the magnificent attributes of this fish, there is another side to its story. Specifically, what happens when northern pike, a highly efficient predator, becomes established outside its natural range? To explore this question, this chapter will investigate observed consequences from many locations where northern pike (hereafter referred to as “pike”) have been introduced and discuss potential reasons why pike, under the right circumstances, can be considered an invasive species.

Environmental conditions and intraspecific interference: unexpected effects of turbidity on pike (Esox lucius) foraging

DEFF Research Database (Denmark)

Nilsson, P.A.; Jacobsen, Lene; Berg, Søren

2009-01-01

on pike foraging alone or among conspecifics in different levels of water turbidity, we expected high turbidity to decrease the perceived risk of intraspecific interactions among pike, and thereby decrease the strength of interference, as turbidity would decrease the visual contact between individuals...... and act as a refuge from behavioural interactions. The results show that this is not the case, but suggest that interference is induced instead of reduced in high turbidity. Per capita foraging rates do not differ between pike foraging alone or in groups in our clear and moderately turbid treatments......, indicating no effect of interference. As high turbidity enhances prey consumption for pike individuals foraging alone, but does not have this effect for pike in groups, high turbidity induces the relative interference effect. We suggest that future evaluations of the stabilizing effects of interference...

Salmo salar and Esox lucius full-length cDNA sequences reveal changes in evolutionary pressures on a post-tetraploidization genome

Directory of Open Access Journals (Sweden)

Holt Robert A

2010-04-01

Full Text Available Abstract Background Salmonids are one of the most intensely studied fish, in part due to their economic and environmental importance, and in part due to a recent whole genome duplication in the common ancestor of salmonids. This duplication greatly impacts species diversification, functional specialization, and adaptation. Extensive new genomic resources have recently become available for Atlantic salmon (Salmo salar, but documentation of allelic versus duplicate reference genes remains a major uncertainty in the complete characterization of its genome and its evolution. Results From existing expressed sequence tag (EST resources and three new full-length cDNA libraries, 9,057 reference quality full-length gene insert clones were identified for Atlantic salmon. A further 1,365 reference full-length clones were annotated from 29,221 northern pike (Esox lucius ESTs. Pairwise dN/dS comparisons within each of 408 sets of duplicated salmon genes using northern pike as a diploid out-group show asymmetric relaxation of selection on salmon duplicates. Conclusions 9,057 full-length reference genes were characterized in S. salar and can be used to identify alleles and gene family members. Comparisons of duplicated genes show that while purifying selection is the predominant force acting on both duplicates, consistent with retention of functionality in both copies, some relaxation of pressure on gene duplicates can be identified. In addition, there is evidence that evolution has acted asymmetrically on paralogs, allowing one of the pair to diverge at a faster rate.

Introduced northern pike consumption of salmonids in Southcentral Alaska

Science.gov (United States)

Sepulveda, Adam J.; Rutz, David S.; Dupuis, Aaron W; Shields, Patrick A; Dunker, Kristine J.

2015-01-01

The impacts of introduced northern pike (Esox lucius) on salmonid populations have attracted much attention because salmonids are popular subsistence, sport and commercial fish. Concern over the predatory effects of introduced pike on salmonids is especially high in Southcentral Alaska, where pike were illegally introduced to the Susitna River basin in the 1950s. We used pike abundance, growth, and diet estimates and bioenergetics models to characterise the realised and potential consumptive impacts that introduced pike (age 2 and older) have on salmonids in Alexander Creek, a tributary to the Susitna River. We found that juvenile salmonids were the dominant prey item in pike diets and that pike could consume up to 1.10 metric tons (realised consumption) and 1.66 metric tons (potential consumption) of juvenile salmonids in a summer. Age 3–4 pike had the highest per capita consumption of juvenile salmonids, and age 2 and age 3–4 pike had the highest overall consumption of juvenile salmonid biomass. Using historical data on Chinook salmon and pike potential consumption of juvenile salmonids, we found that pike consumption of juvenile salmonids may lead to collapsed salmon stocks in Alexander Creek. Taken together, our results indicate that pike consume a substantial biomass of juvenile salmonids in Alexander Creek and that coexistence of pike and salmon is unlikely without management actions to reduce or eliminate introduced pike.

Length-weight relationship of northern pike, Esox lucius, from East Harbor, Ohio

Science.gov (United States)

Brown, Edward H.; Clark, Clarence F.

1965-01-01

The northern pike is one of Ohio's largest game fish but is well known to comparatively few anglers. Large numbers of the big fish spawn in the Ohio marshes adjacent to Lake Erie. Movements related to spawning reach a peak in late March or early April. Later the spawning population disperses and is seldom represented in catches by experimental gear or by anglers. The short period of availability was used to obtain life history information in March of 1951 through 1953. No comprehensive length-weight data for this species have previously been published from this area. East Harbor is a sandspit pond separated from Lake Erie by a large sand bar. Waters and fish populations of the harbor and lake can mix freely through a permanent connecting channel. The larger part of the 850 surface acres of the harbor is normally less than 8 feet deep. The male northern pike averaged 20.5 inches in length and ranged from 13.5 to 28.5 inches. The conspicuously larger females averaged 26.0 inches and ranged from 15.5 to 37.5 inches.

Pike Esox Lucius Distribution and Feeding Comparisons in Natural and Historically Channelized River Sections

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Ivanovs Kaspars

2016-12-01

Full Text Available During the last century a large portion of small and medium-sized rivers in Latvia were channelized, hydroelectric power stations were also built, which led to changes in the hydrodynamic conditions, geomorphological structure, as well as a change in the fish fauna. Fish are an integral part of any community in natural or man-made bodies of water. They actively participate in maintaining the system, balancing/equilibrium, energy, substance transformation and biomass production. They are able to influence other organisms in the ecosystem in which they live. The aim of the paper “Pike distribution and feeding comparisons in natural and historically channelized river sections” is to find out what pike feed on in different environments in Latvian rivers, such as natural and straightened river sections, as well as what main factors determine the composition of their food. Several points were assessed during the course of the study: the impact of environmental conditions on the feeding habits and the distribution of pike; the general feeding habits of predators in Latvian rivers; the feeding differences of predators in natural and straightened river sections; and lastly, rhithral and pothamal habitats were compared. The study was based on data from 2014 and 2015 on fish fauna monitoring. During the study, 347 pike were collected from 136 plots using electrofishing method.

Pike Esox Lucius Distribution and Feeding Comparisons in Natural and Historically Channelized River Sections

Science.gov (United States)

Ivanovs, Kaspars

2016-12-01

During the last century a large portion of small and medium-sized rivers in Latvia were channelized, hydroelectric power stations were also built, which led to changes in the hydrodynamic conditions, geomorphological structure, as well as a change in the fish fauna. Fish are an integral part of any community in natural or man-made bodies of water. They actively participate in maintaining the system, balancing/equilibrium, energy, substance transformation and biomass production. They are able to influence other organisms in the ecosystem in which they live. The aim of the paper "Pike distribution and feeding comparisons in natural and historically channelized river sections" is to find out what pike feed on in different environments in Latvian rivers, such as natural and straightened river sections, as well as what main factors determine the composition of their food. Several points were assessed during the course of the study: the impact of environmental conditions on the feeding habits and the distribution of pike; the general feeding habits of predators in Latvian rivers; the feeding differences of predators in natural and straightened river sections; and lastly, rhithral and pothamal habitats were compared. The study was based on data from 2014 and 2015 on fish fauna monitoring. During the study, 347 pike were collected from 136 plots using electrofishing method.

Introduced northern pike predation on salmonids in southcentral Alaska

Science.gov (United States)

Sepulveda, Adam J.; Rutz, David S.; Ivey, Sam S.; Dunker, Kristine J.; Gross, Jackson A.

2013-01-01

Northern pike (Esox lucius) are opportunistic predators that can switch to alternative prey species after preferred prey have declined. This trophic adaptability allows invasive pike to have negative effects on aquatic food webs. In Southcentral Alaska, invasive pike are a substantial concern because they have spread to important spawning and rearing habitat for salmonids and are hypothesised to be responsible for recent salmonid declines. We described the relative importance of salmonids and other prey species to pike diets in the Deshka River and Alexander Creek in Southcentral Alaska. Salmonids were once abundant in both rivers, but they are now rare in Alexander Creek. In the Deshka River, we found that juvenile Chinook salmon (Oncorhynchus tshawytscha) and coho salmon (O. kisutch) dominated pike diets and that small pike consumed more of these salmonids than large pike. In Alexander Creek, pike diets reflected the distribution of spawning salmonids, which decrease with distance upstream. Although salmonids dominated pike diets in the lowest reach of the stream, Arctic lamprey (Lampetra camtschatica) and slimy sculpin (Cottus cognatus) dominated pike diets in the middle and upper reaches. In both rivers, pike density did not influence diet and pike consumed smaller prey items than predicted by their gape-width. Our data suggest that (1) juvenile salmonids are a dominant prey item for pike, (2) small pike are the primary consumers of juvenile salmonids and (3) pike consume other native fish species when juvenile salmonids are less abundant. Implications of this trophic adaptability are that invasive pike can continue to increase while driving multiple species to low abundance.

Fishing for Northern Pike in Minnesota: A comparison of anglers and dark house spearers

Science.gov (United States)

Schroeder, Susan A.; Fulton, David C.

2014-01-01

In order to project fishing effort and demand of individuals targeting Northern Pike Esox lucius in Minnesota, it is important to understand the catch orientations, management preferences, and site choice preferences of those individuals. Northern Pike are specifically targeted by about 35% of the approximately 1.5 million licensed anglers in Minnesota and by approximately 14,000–15,000 dark house spearers. Dark house spearing is a traditional method of harvesting fish through the ice in winter. Mail surveys were distributed to three research strata: anglers targeting Northern Pike, dark house spearing license holders spearing Northern Pike, and dark house spearing license holders angling for Northern Pike. Dark house spearers, whether spearing or angling, reported a stronger orientation toward keeping Northern Pike than did anglers. Anglers reported a stronger orientation toward catching large Northern Pike than did dark house spearers when spearing or angling. Northern Pike regulations were the most important attribute affecting site choice for respondents in all three strata. Models for all strata indicated a preference for lakes without protected slot limits. However, protected slot limits had a stronger negative influence on lake preference for dark house spearing licensees (whether spearing or angling) than for anglers.

Pike (Esox lucius L.) on the edge: consistent individual movement patterns in transitional waters of the western Baltic

DEFF Research Database (Denmark)

Jacobsen, Lene; Bekkevold, Dorte; Berg, Søren

2017-01-01

salinity) would perform spawning- and feeding-related movements between areas with different salinity regimes. Twenty-two pike were caught prior to spawning, tagged with acoustic transmitters, and their movements were tracked for 18 months. Pike showed two main patterns of movements that were consistent......-varied with either length or condition factor. Despite the fact that the lagoon’s salinity is close to the reported upper limit for pike egg development, results indicated that all pike spawned in the lagoon. Correspondingly, genetic data showed that all fish belonged to the same reproductive population unit...

Impacts of Northern Pike on stocked Rainbow Trout in Pactola Reservoir, South Dakota

Science.gov (United States)

Scheibel, Natalie C.; Dembkowski, Daniel J.; Davis, Jacob L.; Chipps, Steven R.

2016-01-01

Establishment of nonnative Northern Pike Esox lucius in Pactola Reservoir, South Dakota, has prompted concern among biologists about the influence of this species on the lake’s intensively managed salmonid fisheries. Ancedotal information suggests that catch rates of Rainbow Trout Oncorhynchus mykiss have declined while mean size and abundance of Northern Pike has increased, although quantitative information on diet and growth of the Northern Pike population is lacking. To address potential interactions between Northern Pike and Rainbow Trout, we assessed size-dependent predation by Northern Pike on Rainbow Trout and determined the relative energetic contribution of stocked Rainbow Trout to Northern Pike growth using bioenergetics modeling. Stable isotopes combined with traditional diet analyses revealed that smaller Northern Pike (Trout contributed less than 10% to their annual energy consumption. In contrast, larger Northern Pike (≥600 mm TL) consumed primarily Rainbow Trout, which accounted for 56% of their annual energy consumption. Combining estimates of Northern Pike predation with production costs of catchable-size Rainbow Trout revealed that annual economic losses ranged from US$15,259 to $24,801 per year. Over its lifespan, an age-10 Northern Pike was estimated to consume ~117 Rainbow Trout worth approximately $340. Thus, Northern Pike predation substantially influences salmonid management initiatives and is likely a primary factor contributing to reduced Rainbow Trout abundance and return to anglers in Pactola Reservoir. Strategies for reducing Northern Pike predation on Rainbow Trout include increasing the size of stocked fish or altering the timing and spatial distribution of stocking events.

Pike ( Esox lucius L.) stocking as a biomanipulation tool .1. Effects on the fish population in Lake Lyng, Denmark

DEFF Research Database (Denmark)

Berg, Søren; Jeppesen, E.; Søndergaard, M.

1997-01-01

significantly by 64 to 97%. In 1991 ruffe disappeared completely. The pike stocking did not affect the density of perch significantly. The growth of pike was high and also the growth of perch increased significantly from 1990 to 1991 (p ... of the piscivorous perch increased due to increased Secchi depth and a continuous high density of 0+ planktivores in the pelagic zone of the lake during the years of pike stocking, possibly caused by behaviourial changes and the forcing of the 0+ planktivores into the pelagic zone...

Slaughter yield and fatty acid profiles of fillets of pike (Esox lucius L. caught before and after spawning

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Zakęś Zdzisław

2015-12-01

Full Text Available The aim of the study was to determine the impact pike fishing season (before spawning in fall (group A and after spawning in spring (group B had on the slaughter yield and fillet fatty acid profile. The slaughter yield of fillets with skin and skinned fillets from the group B fish was significantly lower (by approximately 7.5% of body weight. The fatty acid profile of the fish meat from the groups examined differed significantly. The fillets of pike caught before spawning were dominated by unsaturated fatty acids (UFA, while those from fish caught after spawning had mainly saturated fatty acids (SFA. The share of polyunsaturated fatty acids (PUFA in the fillets of fish that had spawned was sixfold lower, and the n-3 PUFA differences were nearly ninefold. The content of eicosapentaenoic (EPA and docosahexaenoic (DHA fatty acids in fillets of fish that had spawned was ninefold lower than in those that had not yet done so. Consequently, the ratio of n-3 PUFA/n-6 PUFA in pike from group A was over three times higher than that in the fish that had spawned (2.61 vs 0.82. Fillets from pike that have spawned are a significantly poorer source of valuable fatty acids for consumers.

Trophic ecology of largemouth bass and northern pike in allopatric and sympatric assemblages in northern boreal lakes

Science.gov (United States)

Soupir, Craig A.; Brown, Michael L.; Kallemeyn, Larry W.

2000-01-01

Largemouth bass (Micropterus salmoides) and northern pike (Esox lucius) are top predators in the food chain in most aquatic environments that they occupy; however, limited information exists on species interactions in the northern reaches of largemouth bass distribution. We investigated the seasonal food habits of allopatric and sympatric assemblages of largemouth bass and northern pike in six interior lakes within Voyageurs National Park, Minnesota. Percentages of empty stomachs were variable for largemouth bass (38-54%) and northern pike (34.7-66.7%). Fishes (mainly yellow perch, Perca flavescens) comprised greater than 60% (mean percent mass, MPM) of the northern pike diet during all seasons in both allopatric and sympatric assemblages. Aquatic insects (primarily Odonata and Hemiptera) were important in the diets of largemouth bass in all communities (0.0-79.7 MPM). Although largemouth bass were observed in the diet of northern pike, largemouth bass apparently did not prey on northern pike. Seasonal differences were observed in the proportion of aquatic insects (P = 0.010) and fishes (P = 0.023) in the diets of northern pike and largemouth bass. Based on three food categories, jackknifed classifications correctly classified 77 and 92% of northern pike and largemouth bass values, respectively. Percent resource overlap values were biologically significant (greater than 60%) during at least one season in each sympatric assemblage, suggesting some diet overlap.

Changes of reproductive system of pike Esox Lucius L. in lake Drukshiai -the cooler of Ignalina NPP

International Nuclear Information System (INIS)

Lukshiene, D.

1995-01-01

On studying the reproductive system of pike in lake Drukshiai during 1992-1994 the same changes in fish gameto- and gonadogenesis as in other coolers were observed: -intensification of gametogenesis processes - earlier sexual maturity; -changes in gonadogenesis processes - a bias of all stages of sexual cycle as well as a change in duration; -disturbance of gametogenesis processes - total and partial degeneration of oocytes causing the disturbance of reproduction cycle what is reflected in the changes of some biological indices (gonadosomatic index and oocyte diameter). The above mentioned disturbances have a negative effect on normal functioning and reproduction of a pike population. (author). 8 refs., 2 figs

Cloning, sequencing and expression of cDNA encoding growth ...

Indian Academy of Sciences (India)

Unknown

of medicine, animal husbandry, fish farming and animal ..... northern pike (Esox lucius) growth hormone; Mol. Mar. Biol. ... prolactin 1-luciferase fusion gene in African catfish and ... 1988 Cloning and sequencing of cDNA that encodes goat.

Inter- and size-specific patterns of fish seasonal migration between a shallow lake and its streams

DEFF Research Database (Denmark)

Skov, Christian; Brodersen, J.; Nilsson, P.A.

2008-01-01

This study used passive telemetry (passive integrated transponders) to evaluate winter migration in three species of cyprinids (roach (Rutilus rutilus (L.)), white bream (Blicca bjoerkna (L.)) and rudd (Scardinius erythrophthalmus (L.))) and their potential predators (pike (Esox lucius (L.)) and ...

Plecospondylic spinal column in the eel Anguilla anguilla

NARCIS (Netherlands)

Stolk, A.

1956-01-01

Several cases of deformities in the spinal column were described in fishes, viz. lordosis in the bitterling Rhodeus amarus) by ROTH (1922), in the minnow (Phoxinus phoxinus) by ROTH (1922), in the pike (Esox lucius) by ROTH (1922) and PLEHN (1924); kyphosis in the toothcarps (Cyprinodontidae) by

Year-class formation of upper St. Lawrence River northern pike

Science.gov (United States)

Smith, B.M.; Farrell, J.M.; Underwood, H.B.; Smith, S.J.

2007-01-01

Variables associated with year-class formation in upper St. Lawrence River northern pike Esox lucius were examined to explore population trends. A partial least-squares (PLS) regression model (PLS 1) was used to relate a year-class strength index (YCSI; 1974-1997) to explanatory variables associated with spawning and nursery areas (seasonal water level and temperature and their variability, number of ice days, and last day of ice presence). A second model (PLS 2) incorporated four additional ecological variables: potential predators (abundance of double-crested cormorants Phalacrocorax auritus and yellow perch Perca flavescens), female northern pike biomass (as a measure of stock-recruitment effects), and total phosphorus (productivity). Trends in adult northern pike catch revealed a decline (1981-2005), and year-class strength was positively related to catch per unit effort (CPUE; R2 = 0.58). The YCSI exceeded the 23-year mean in only 2 of the last 10 years. Cyclic patterns in the YCSI time series (along with strong year-classes every 4-6 years) were apparent, as was a dampening effect of amplitude beginning around 1990. The PLS 1 model explained over 50% of variation in both explanatory variables and the dependent variable, YCSI first-order moving-average residuals. Variables retained (N = 10; Wold's statistic ??? 0.8) included negative YCSI associations with high summer water levels, high variability in spring and fall water levels, and variability in fall water temperature. The YCSI exhibited positive associations with high spring, summer, and fall water temperature, variability in spring temperature, and high winter and spring water level. The PLS 2 model led to positive YCSI associations with phosphorus and yellow perch CPUE and a negative correlation with double-crested cormorant abundance. Environmental variables (water level and temperature) are hypothesized to regulate northern pike YCSI cycles, and dampening in YCSI magnitude may be related to a

Stocking impact and temporal stability of genetic composition in a brackish northern pike population ( Esox lucius L.), assessed using microsatellite DNA analysis of historical and contemporary samples

DEFF Research Database (Denmark)

Larsen, Peter Foged; Hansen, Michael Møller; Eg Nielsen, Einar

2005-01-01

During the last decade, brackish northern pike populations in Denmark have been subject to stocking programmes, using nonindigenous pike from freshwater lakes, in order to compensate for drastic population declines. The present study was designed to investigate the genetic impact of stocking fres...

From regionally predictable to locally complex population structure in a freshwater top predator: River systems are not always the unit of connectivity in Northern Pike Esox lucius

DEFF Research Database (Denmark)

Bekkevold, Dorte; Jacobsen, Lene; Hansen, Jakob Hemmer

2015-01-01

Contemporary genetic diversity is the product of both historical and contemporary forces, such as climatic and geological processes affecting range distribution and continuously moulded by evolutionary forces selection, gene flow and genetic drift. Predatory freshwater fishes, such as Northern Pike...... structure from local to regional scales is relatively poorly described, in spite of its significance to developing conservation measures. We analysed microsatellite variation in a total of 1185 North European pike from 46 samples collected across both local and regional scales, as well as over time......, to address two overarching questions: Is pike population structure associated with local and/or regional connectivity patterns, and which factors likely have the main influence on the contemporary distribution of genetic diversity? To answer this, we combined estimators of population diversity and structure...

62 years of population dynamics of European perch (Perca fluviatilis) in a mesotrophic lake tracked using angler diaries: The role of commercial fishing, predation and temperature

DEFF Research Database (Denmark)

Skov, Christian; Jansen, Teunis; Arlinghaus, Robert

2017-01-01

(abundance, mean size and record size) of European perch (Perca fluviatilis L.) in relation to the impact of three commercial fishers with different fishing strategies, pike (Esox lucius L.) predation and temperature. We found that anglers’ harvest rates of perch varied by a factor of 10 over time......, but it also underlines the need for supplementary data on biotic and abiotic factors to reach the full potential of angler diary data...

The effects of pulse pressure from seismic water gun technology on Northern Pike

Science.gov (United States)

Gross, Jackson A.; Irvine, Kathryn M.; Wilmoth, Siri K.; Wagner, Tristany L.; Shields, Patrick A; Fox, Jeffrey R.

2013-01-01

We examined the efficacy of sound pressure pulses generated from a water gun for controlling invasive Northern Pike Esox lucius. Pulse pressures from two sizes of water guns were evaluated for their effects on individual fish placed at a predetermined random distance. Fish mortality from a 5,620.8-cm3 water gun (peak pressure source level = 252 dB referenced to 1 μP at 1 m) was assessed every 24 h for 168 h, and damage (intact, hematoma, or rupture) to the gas bladder, kidney, and liver was recorded. The experiment was replicated with a 1,966.4-cm3 water gun (peak pressure source level = 244 dB referenced to 1 μP at 1 m), but fish were euthanized immediately. The peak sound pressure level (SPLpeak), peak-to-peak sound pressure level (SPLp-p), and frequency spectrums were recorded, and the cumulative sound exposure level (SELcum) was subsequently calculated. The SPLpeak, SPLp-p, and SELcum were correlated, and values varied significantly by treatment group for both guns. Mortality increased and organ damage was greater with decreasing distance to the water gun. Mortality (31%) by 168 h was only observed for Northern Pike exhibiting the highest degree of organ damage. Mortality at 72 h and 168 h postexposure was associated with increasing SELcum above 195 dB. The minimum SELcum calculated for gas bladder rupture was 199 dB recorded at 9 m from the 5,620.8-cm3 water gun and 194 dB recorded at 6 m from the 1,966.4-cm3water gun. Among Northern Pike that were exposed to the large water gun, 100% of fish exposed at 3 and 6 m had ruptured gas bladders, and 86% exposed at 9 m had ruptured gas bladders. Among fish that were exposed to pulse pressures from the smaller water gun, 78% exhibited gas bladder rupture. Results from these initial controlled experiments underscore the potential of water guns as a tool for controlling Northern Pike.

Bioaccumulation of organochlorine pollutants in the fish community in Lake Arungen, Norway

International Nuclear Information System (INIS)

Sharma, Chhatra Mani; Rosseland, Bjorn Olav; Almvik, Marit; Eklo, Ole Martin

2009-01-01

Organochlorine pollutants in the major fish species (pike Esox lucius, perch Perca fluviatilis, and roach Rutilus rutilus) of Lake Arungen, Norway, were investigated after an extensive removal of large pike in 2004. The organochlorine pollutants detected in fish liver samples in 2005 were dichlorodiphenyltrichloroethane (DDTs), polychlorinated biphenyls (PCBs), hexachlorobenzene (HCB), and heptachlor epoxide (HCE). DDTs were the dominant among all analyzed OCs. ΣPCB and HCB, detected in fish from two clearly distinct trophic levels (prey and predators), give an indication of biomagnification. All OC concentrations in female pike were significantly lower compared to males, which might be due to the removal of high concentrations of pollutants in roe during spawning. - Organochlorine pollutants in fish tissues tend to magnify up the food chain

Messages of invasive Perccottus glenii individuals eaten by an Esox lucius from the Danube Delta

OpenAIRE

Ilie Cătălin Telcean; Alfred-Stefan Cicort-Lucaciu

2016-01-01

In the stomach of a pike from the Danube Delta we have found seven Perccottus glenii individuals. Their message indicated that in the Danube Delta P. glenii has already large population. Also, it proves that in its habitats, the pike can consume numerous individuals of this invasive species. Their gut contents prove that P. glenii hunted near the shores, ingesting numerous terrestrial preys.

Messages of invasive Perccottus glenii individuals eaten by an Esox lucius from the Danube Delta

Directory of Open Access Journals (Sweden)

Ilie Cătălin Telcean

2016-12-01

Full Text Available In the stomach of a pike from the Danube Delta we have found seven Perccottus glenii individuals. Their message indicated that in the Danube Delta P. glenii has already large population. Also, it proves that in its habitats, the pike can consume numerous individuals of this invasive species. Their gut contents prove that P. glenii hunted near the shores, ingesting numerous terrestrial preys.

Réponses comportementales du brochet (Esox lucius L. à un extrait épidermique de carassin doré (Carassius auratus L. en olfactomètre

Directory of Open Access Journals (Sweden)

SAGLIO Ph.

1993-04-01

Full Text Available Les effets de solutions brutes (EE et d'une fraction d'acides aminés libres reconstituée (FAA, issues d'un extrait épidermique de Carassin doré (Carassius auratus L., ont été analysés sur l'attraction et le comportement exploratoire du Brochet (Esox lucius L. en olfactomètre. Des effets significatifs ont été observés en réponse aux différentes solutions et doses testées (EE = 0,005 ; 0,05 ; 0,5 équivalent-carassin/l ; FAA = 0,5 équivalent-carassin/l. L'effet stimulant des solutions épidermiques brutes sur l'exploration varie en raison inverse de la concentration testée. L'activité de ces solutions sur l'attraction augmente avec la concentration. L'effet stimulant de la fraction d'acides aminés libres reconstituée sur l'exploration et sur l'attraction est apparu inférieur à celui observé en réponse à la solution brute. Ces résultats sont discutés à la lueur de données sur le rôle des sécrétions de la peau et des acides aminés dans la communication chimique chez les poissons.

Strontium and zinc concentrations in otoliths of common fish species in the northern Baltic Sea

Energy Technology Data Exchange (ETDEWEB)

Lill, J.-O., E-mail: jlill@abo.fi [Accelerator Laboratory, Turku PET Centre, Åbo Akademi University, Porthansgatan 3, FI-20500 Turku (Finland); Himberg, M. [Laboratory of Aquatic Pathobiology, Husö Biological Station, Environmental and Marine Biology, Department of Biosciences, Åbo Akademi University, Artillerigatan 6, FI-20520 Turku (Finland); Harju, L.; Ek, P. [Analytical Chemistry, Department of Chemical Engineering, Åbo Akademi University, Biskopsgatan 8, FI-20500 Turku (Finland); Lindroos, A. [Geology and Mineralogy, Department of Natural Sciences, Åbo Akademi University, Domkyrkotorget, FI-20500 Turku (Finland); Wiklund, T. [Laboratory of Aquatic Pathobiology, Husö Biological Station, Environmental and Marine Biology, Department of Biosciences, Åbo Akademi University, Artillerigatan 6, FI-20520 Turku (Finland); Gunnelius, K.; Smått, J.-H. [Physical Chemistry, Department of Natural Sciences, Åbo Akademi University, Porthansgatan 3, FI-20500 Turku (Finland); Heselius, S.-J. [Accelerator Laboratory, Turku PET Centre, Åbo Akademi University, Porthansgatan 3, FI-20500 Turku (Finland); Hägerstrand, H. [Laboratory of Aquatic Pathobiology, Husö Biological Station, Environmental and Marine Biology, Department of Biosciences, Åbo Akademi University, Artillerigatan 6, FI-20520 Turku (Finland)

2014-01-01

Otoliths of perch (Perca fluviatilis), pike (Esox lucius) and European whitefish (Coregonus lavaretus) caught at different locations in the northern Baltic Sea along the Finnish west coast and at some rivers and lakes were subjected to elemental analyses with particle induced X-ray emission and laser ablation inductively coupled plasma mass spectrometry. The strontium concentration in otoliths from whitefish (∼3300 μg/g) was 2–3 times higher than that of perch and pike (∼1400 μg/g), while within species the strontium concentration of otoliths from fish caught at different locations was in the same range. The strontium concentrations were lowest in fish from the lakes (∼450 μg/g). Whitefish otoliths contained more zinc (∼60 μg/g) than those of pike (∼30 μg/g), while the zinc concentration in perch otoliths were below the detection limit. No spatial intraspecies variations in zinc concentrations were observed. X-ray diffraction showed that the otoliths consisted of aragonite solely.

Strontium and zinc concentrations in otoliths of common fish species in the northern Baltic Sea

International Nuclear Information System (INIS)

Lill, J.-O.; Himberg, M.; Harju, L.; Ek, P.; Lindroos, A.; Wiklund, T.; Gunnelius, K.; Smått, J.-H.; Heselius, S.-J.; Hägerstrand, H.

2014-01-01

Otoliths of perch (Perca fluviatilis), pike (Esox lucius) and European whitefish (Coregonus lavaretus) caught at different locations in the northern Baltic Sea along the Finnish west coast and at some rivers and lakes were subjected to elemental analyses with particle induced X-ray emission and laser ablation inductively coupled plasma mass spectrometry. The strontium concentration in otoliths from whitefish (∼3300 μg/g) was 2–3 times higher than that of perch and pike (∼1400 μg/g), while within species the strontium concentration of otoliths from fish caught at different locations was in the same range. The strontium concentrations were lowest in fish from the lakes (∼450 μg/g). Whitefish otoliths contained more zinc (∼60 μg/g) than those of pike (∼30 μg/g), while the zinc concentration in perch otoliths were below the detection limit. No spatial intraspecies variations in zinc concentrations were observed. X-ray diffraction showed that the otoliths consisted of aragonite solely

New host and locality record for Triaenophorus crassus forel (Cestoda: pseudophyllidea)

Science.gov (United States)

Uzmann, J.R.; Hesselholt, M.N.

1957-01-01

The adult form of Triaenophorus crassus Forel, 1868 (= T. robustus Olsson, 1893; = T. tricuspidatus morpha megadentatus Wardle, 1932) occurs as an intestinal parasite in the pike, Esox lucius L., a holarctic species of wide distribution. Preliminary life-history stages include procercoid development in copepods of the genus Cyclops followed by plerocercoid development in the musculature of a variety of coregonid and salmonid fishes. The unsightly appearance of even moderate plerocercoid infections is often sufficient to render fish unacceptable for human consumption. In the prairie provinces of Canada the incidence and intensity of T. crassus infections in the commercially important whitefishes constitute a serious economic problem.

Climate and Physiography Predict Mercury Concentrations in Game Fish Species in Quebec Lakes Better than Anthropogenic Disturbances.

Science.gov (United States)

Lucotte, Marc; Paquet, Serge; Moingt, Matthieu

2016-05-01

The fluctuations of mercury levels (Hg) in fish consumed by sport fishers in North-Eastern America depend upon a plethora of interrelated biological and abiological factors. To identify the dominant factors ultimately controlling fish Hg concentrations, we compiled mercury levels (Hg) during the 1976-2010 period in 90 large natural lakes in Quebec (Canada) for two major game species: northern pike (Esox lucius) and walleye (Sander vitreus). Our statistical analysis included 28 geographic information system variables and 15 climatic variables, including sulfate deposition. Higher winter temperatures explained 36% of the variability in higher walleye growth rates, in turn accounting for 54% of the variability in lower Hg concentrations. For northern pike, the dominance of a flat topography in the watershed explained 31% of the variability in lower Hg concentrations. Higher mean annual temperatures explained 27% of the variability in higher pike Hg concentrations. Pelagic versus littoral preferred habitats for walleye and pike respectively could explain the contrasted effect of temperature between the two species. Heavy logging could only explain 2% of the increase in walleye Hg concentrations. The influence of mining on fish Hg concentrations appeared to be masked by climatic effects.

Fatty acid composition of fish species with different feeding habits from an Arctic Lake.

Science.gov (United States)

Gladyshev, M I; Sushchik, N N; Glushchenko, L A; Zadelenov, V A; Rudchenko, A E; Dgebuadze, Y Y

2017-05-01

We compared the composition and content of fatty acids (FAs) in fish with different feeding habits (sardine (least) cisco Coregonus sardinella, goggle-eyed charr (pucheglazka) form of Salvelinus alpinus complex, humpback whitefish Coregonus pidschian, broad whitefish Coregonus nasus, boganid charr Salvelinus boganidae, and northern pike Esox lucius from an Arctic Lake. Feeding habits of the studied fish (planktivore, benthivore, or piscivore) significantly affected the composition of biomarker fatty acids and the ratio of stable isotopes of carbon and nitrogen in their biomass. The hypothesis on a higher content of eicosapentaenoic and docosahexaenoic acids in the fish of higher trophic level (piscivores) when compared within the same taxonomic group (order Salmoniformes) was confirmed.

Effect of boat noise and angling on lake fish behaviour

DEFF Research Database (Denmark)

Jacobsen, Lene; Baktoft, Henrik; Jepsen, Niels

2014-01-01

or (2) boating in short intervals combined with angling with artificial lures between engine runs. The response of the fish species was evaluated by high-resolution tracking using an automatic acoustic telemetry system and transmitters with sub-minute burst rates. Rutilus rutilus swimming speed......The effects of disturbances from recreational activities on the swimming speed and habitat use of roach Rutilus rutilus, perch Perca fluviatilis and pike Esox lucius were explored. Disturbances were applied for 4h as (1) boating in short intervals with a small outboard internal combustion engine...... the two types of disturbances (boating with and without angling), indicating that boating was the primary source of disturbance. This study highlights species-specific responses to recreational boating and may have implications for management of human recreational activities in lakes...

Distribution and food habits of young-of-the-year fishes in a backwater lake of the upper Mississippi River

Science.gov (United States)

Holland, L.E.; Huston, M.L.

1985-01-01

The distribution patterns and food habits of young-of-the-year (YOY) fishes in a lentic area adjacent to the main channel of Pool 7 of the upper Mississippi River were studied. Habitats sampled grouped distinctly based on percent composition and abundance of YOY fishes with those having submergent vegetation dominated by a number of important sport species. In late spring, the grouping of stations depended on the presence or absence of newly transformed northern pike (Esox lucius). In early summer, stations did not differ as distinctly in composition, but in total abundance of young. Those stations with submergent vegetation had total catches which were more than double those elsewhere. By late summer, submergent and mixed vegetation stations formed a distinct assemblage influenced by the preponderance of three species of sunfishes. (DBO).

Changes in fish mercury concentrations over 20 years in an acidified lake subject to experimental liming

International Nuclear Information System (INIS)

Rask, Martti; Jones, Roger I.; Jaervinen, Marko; Paloheimo, Anna; Salonen, Maiju; Syvaeranta, Jari; Verta, Matti

2007-01-01

Lake Iso Valkjaervi (southern Finland, Europe) was divided in two with a plastic curtain in 1991. One half was neutralized with CaCO 3 , and the other acted as a control. Mercury concentrations of perch (Perca fluviatilis) and northern pike (Esox lucius) in the limed and control side of the lake were studied both before and after the treatment. Average Hg concentrations of perch and pike were 0.40 and 1.2 μg g -1 (ww) in the early 1980s and 0.25 and 0.72 μg g -1 (ww) a decade later at the time of liming. Ten years after the liming the Hg concentrations of perch in the limed and control sides of the lake were 0.21 and 0.28 μg g -1 (ww) and those of pike were 0.69 and 0.43 μg g -1 (ww), respectively. Nitrogen isotope ratios (δ 15 N) for perch in the sampling period 2002-2004 showed wide variation suggesting variable trophic positions for individual fish. Pike formed two groups according to their δ 15 N-values, suggesting that zoobenthos dominated the diet of pike around 20 cm in length and fish that of the larger pikes. Because the δ 15 N-values of fish were at similar levels in the limed and control sides of L. Iso Valkjaervi, differences in food web structure cannot account for the different fish Hg concentrations. A more likely explanation is water quality induced differences in the dynamics and bioavailability of Hg, leading to decreased formation of methyl Hg

Impact of the cestode Triaenophorus nodulosus on the exotic Lepomis gibbosus and the autochthonous Perca fluviatilis.

Science.gov (United States)

Masson, G; Vanacker, M; Fox, M G; Beisel, J-N

2015-05-01

The effects of plerocercoids of the cestode Triaenophorus nodulosus infecting the livers of native Eurasian perch Perca fluviatilis and non-native pumpkinseed Lepomis gibbosus was investigated in 17 sites along the Moselle watershed. With a single exception, infected individuals were not observed in the main channel whether or not northern pike Esox lucius, a final host, was present. In ponds where the pike was present, the prevalence of T. nodulosus averaged 86% in Eurasian perch and 15% in pumpkinseed. The parasite was not present at all in ponds when pike were absent. Parasite load, hepatosomatic index (HSI), gonadosomatic index (GSI) and body condition index (CI) were compared between hosts in one site where parasite prevalence and fish abundance was highest. HSI in infected perch was significantly higher than in uninfected perch, whereas no differences in HSI were detected between infected and uninfected pumpkinseed. While perch were more frequently infected and had a greater average parasite load than pumpkinseed, there were no significant differences in either indicator between the two species. Furthermore, no significant differences in GSI or CI were observed between infected and uninfected fish in either species, by either gender or maturity stage. We hypothesize that pumpkinseed is more resistant to the parasite or less likely to feed upon infected copepods than perch.

Importance of small fishes and invasive crayfish in otter Lutra lutra diet in an English chalk stream

Directory of Open Access Journals (Sweden)

Britton J. Robert

2017-01-01

Full Text Available The diet composition of the European otter Lutra lutra was assessed using spraint analysis in the Hampshire Avon, a lowland chalk stream in Southern England, over an 18-month period. Small cyprinid fishes were the main prey item taken in all seasons, with bullhead Cottus gobio and stone loach Barbatula barbatula also important; there were relatively few larger fishes of interest to fisheries found. There were significant seasonal differences in diet composition by season, with signal crayfish Pacifastacus leniusculus only being prominent prey items in warmer months and amphibians in winter, revealing that non-fish resources were seasonally important dietary components. Reconstructed body lengths of prey revealed the only species present in diet >350 mm was pike Esox lucius. These dietary data thus provide important information for informing conservation conflicts between otters and fishery interests.

Comparative baseline levels of mercury, Hsp 70 and Hsp 60 in subsistence fish from the Yukon-Kuskokwim delta region of Alaska.

Science.gov (United States)

Duffy, L K; Scofield, E; Rodgers, T; Patton, M; Bowyer, R T

1999-10-01

In subsistence fish; northern pike (Esox lucius), burbot (Lota lota), whitefish (Coregonus nelsoni), grayling (Thymallus arcticus) and sheefish (Stenodus lencichthys), we determined the Hsp 60 and Hsp 70 levels in 31 samples from adult fish gills. A dot-blot analysis using antibodies to either Hsp 70 or Hsp 60 showed the average Hsp 70 concentration was 9.1 microg/mg protein, while the average Hsp 60 concentration was 147.4 microg/mg protein. Mercury levels in muscle tissue in these fish averaged 0.382 ppm. Using a subset of samples (n = 24), we determined that the major component in the muscle of Alaskan subsistence fish was methyl mercury. No correlation was observed between Hsp 60 or Hsp 70 expression in gill tissue and mercury concentrations in muscle tissue. Hsp 60 and Hsp 70 protein levels in the gills were correlated.

Fish resource data from the Snare River, Northwest Territories

International Nuclear Information System (INIS)

Jessop, E.F.; Chang-Kue, K.T.J.; MacDonald, G.

1994-01-01

An extensive fish sampling and tagging program was conducted on the Snare River, Northwest Territories, in order to collect baseline data on the fish populations in sections of the river altered by hydroelectric projects. Fish populations were sampled from May to July 1977 in five sections of the river that were influenced by development of hydropower at three dams currently on line; 530 tagged fish were also released. The biweekly catch composition in experimental gill nets for each study area and the catch per gill net mesh size are presented for walleye (Stizostedion vitreum), lake trout (Salvelinus namaycush), lake whitefish (Coregonus clupeaformis), lake cisco (Coregonus artedi), northern pike (Esox lucius), white sucker (Catostomus commersoni), and longnose sucker (Catostomus catostomus). Age-specific data on length, weight, age, sex, and maturity are also included. 7 refs., 12 figs., 42 tabs

Physiological and ecological factors influencing the radiocaesium contamination of fish species from Kiev reservoir

Energy Technology Data Exchange (ETDEWEB)

Koulikov, A.O. [A.N. Severtzov Institute of Evolutionary Morphology and Ecology of Animals, Russian Academy of Sciences, Moscow (Russian Federation)

1995-11-23

The monitoring of {sup 137}Cs contamination of fish from the northern part of the Kiev reservoir between 1987 and 1992 indicated systematic differences in the long-term average contamination levels of different species, which are closely related to their trophic levels. The average contamination of the predatory species: perch (Perca fluviatilis) and pike (Esox lucius) were roughly factors of 6.3 and 4.4 respectively, higher than those of the nonpredatory species: bream (Abramis brama), silver bream (Blicca bjoerkna) and rudd (Scardinius erythrophothalmus). For tench (Tinca tinca) and goldfish (Carassius sp.), this factor is 2. The solution of the caesium balance equation in fish obtained for equilibrium conditions, which is applicable to the long-term contamination, provides some explanations for these accumulation differences between the species with respect to influences by different ecological and physiological factors.

Comparative analysis of radiosensitivity of fish eggs from northern and temperate climate

International Nuclear Information System (INIS)

Kryshev, A.; Sazykina, T.

2004-01-01

In the radiobiological studies of aquatic organisms, fish eggs are the favorite subject for experimental work because of easy availability of embryos and the possibility of observing the development of embryos within eggs. Data from Russian/FSU publications concerning the effects of ionizing radiation on fish eggs were compiled in the EPIC database within the framework of the EC Project EPIC. The comparative analysis of radiosensitivity was performed for eggs of two representative fish species from different climatic zones: cold water salmon (Salmo salar), and pike (Esox lucius), a widespread predatory fish in the temperate climate. A special attention was given to data of chronic exposure experiments with incubation of roe in water containing radionuclides. Dose rates on the fish eggs were estimated using appropriate dosimetric methodologies. Dose-effects relationships were constructed for chronic exposures during the periods of fish eggs development. The comparative analysis revealed that effects of ionizing radiation on salmon eggs appeared at lower doses than the effects on pike eggs. For example, first effects on survival of salmon eggs appeared at dose rate (1-2)*10-4 Gy/day, whereas effects on survival of pike eggs were not found at dose rates lower than (5-10)*10-3 Gy/day (chronic exposure); practically total death of roe took place at the chronic dose rates 0.13-0.33 Gy/day for salmon and 0.94 Gy/day for pike. Data on dose-effects relationships for salmon and pike roe defined the range of radiosensitivities between fish species from zones of severe and moderate climate. (author)

Influence de la densité initiale de larves de brochet (Esox lucius L., 1758 en élevage intensif sur la survie, la croissance et la consommation journalière de nourriture (zooplancton, Chaoboridés

Directory of Open Access Journals (Sweden)

GRES P.

1996-07-01

Full Text Available Vingt mille larves de brochet (Esox lucius, L. ont été élevées 35 jours en bac, avec une nourriture vivante (zooplancton et larves de Chaoboridés, Diptères collectée en lagune d'épuration. Le but de cette expérience était de connaître l'influence de la densité initiale de stockage (5000 à 20000 individus/m3 sur la survie, la croissance et la quantité journalière de nourriture consommée au cours des phases zooplanctonophage et entomophage du stade larve en début d'alimentation exogène (10-13 mm, LT au stade juvénile de 50 à 60 mm (LT. Les taux de survie, de cannibalisme et de croissance sont dépendants de la densité d'élevage. Le rythme alimentaire est monophasique et indépendant de la mise en charge et de la taille des brochetons. La consommation journalière, évoluant avec la taille du poisson, est peu influencée par la densité. Le taux d'évacuation gastrique est stable au cours de cet élevage. Le pourcentage du poids vif ingéré par jour par rapport au poids du poisson décroît du stade larve de 13-16 mm (30 % au stade juvénile de 35-50 mm (20 %. Des bases de rationnement pour une production de brochetons en élevage intensif sont proposées.

Ethyl-p-aminobenzoate (Benzocaine): efficacy as an anesthetic for five species of freshwater fish

Science.gov (United States)

Dawson, V.K.; Gilderhus, P.A.

1979-01-01

Ethyl-p-aminobenzoate (benzocaine) was tested for its efficacy as an anesthetic for rainbow trout (Salmo gairdnerii, brown trout (Salmo truttas, northern pike (Esox lucius). carp (Cyprinus carpio), and largemouth bass (Mieropterus salmoidesi. Since benzocaine is not water soluble, it was applied with acetone as a carrier. Concentrations of 100 to 200 mg!l were required for large adult northern pike, compared with 50 to 100 mg/l for small fish. Rates of sedation and recovery were slower in cold water than in warm water. Water hardness had little influence on the activity of benzocaine. Fish were anesthetized faster and recovered more slowly in acid than in alkaline water. Benzocaine produced deep anesthesia, but concentrations that rendered the fish handleable within 5 min were generally not safe for exposures longer than 15 min. Concentrations of benzocaine efficacious for fish were not acutely toxic to eggs of coho salmon (Oncorhynchus kisutch), chinook salmon (Oncorhynchus tshauiytschas, rainbow trout, brown trout, or lake trout (Salvelinus namaycush). Benzocaine is not registered for fishery use and is neither more effective nor safer than the registered anesthetic, tricaine methanesulfonate (MS-222l.

Potential direct and indirect effects of climate change on a shallow natural lake fish assemblage

Science.gov (United States)

Breeggemann, Jason J.; Kaemingk, Mark A.; DeBates, T.J.; Paukert, Craig P.; Krause, J.; Letvin, Alexander P.; Stevens, Tanner M.; Willis, David W.; Chipps, Steven R.

2015-01-01

Much uncertainty exists around how fish communities in shallow lakes will respond to climate change. In this study, we modelled the effects of increased water temperatures on consumption and growth rates of two piscivores (northern pike [Esox lucius] and largemouth bass [Micropterus salmoides]) and examined relative effects of consumption by these predators on two prey species (bluegill [Lepomis macrochirus] and yellow perch [Perca flavescens]). Bioenergetics models were used to simulate the effects of climate change on growth and food consumption using predicted 2040 and 2060 temperatures in a shallow Nebraska Sandhill lake, USA. The patterns and magnitude of daily and cumulative consumption during the growing season (April–October) were generally similar between the two predators. However, growth of northern pike was always reduced (−3 to −45% change) compared to largemouth bass that experienced subtle changes (4 to −6% change) in weight by the end of the growing season. Assuming similar population size structure and numbers of predators in 2040–2060, future consumption of bluegill and yellow perch by northern pike and largemouth bass will likely increase (range: 3–24%), necessitating greater prey biomass to meet future energy demands. The timing of increased predator consumption will likely shift towards spring and fall (compared to summer), when prey species may not be available in the quantities required. Our findings suggest that increased water temperatures may affect species at the edge of their native range (i.e. northern pike) and a potential mismatch between predator and prey could exist.

Lake and watershed influences on the distribution of elemental contaminants in the Rideau Canal System, a UNESCO world heritage site.

Science.gov (United States)

Stuyt, Shannon S M; Chapman, E Emily V; Campbell, Linda M

2015-08-01

Watershed-specific variables such as sediment particle size distribution, water depth, sedimentation rate, focusing factors, and catchment area to lake area ratio can affect the distribution of trace element contaminants to lakes. The aim of this study was to investigate sources of metals to three headwater lakes and to quantify effects of watershed-specific variables on spatial and temporal trends of trace elements (As, Cd, Co, Cr, Cu, Hg, K, Ni, Pb, Rb, and Zn) in sediments and mercury (Hg) concentrations in fish. Surface sediment and water samples were used to characterize spatial patterns, while sediment cores were collected to portray temporal trends. Historical trends of Hg in northern pike (Esox lucius) were assessed in relation to paleolimnological trends of sediment Hg concentrations. Similarity in timing of sediment peak trace element concentrations for the lakes suggests large-scale, atmospheric sources. The lake with highest catchment area-to-lake area ratio was consistently associated with highest sediment elemental concentrations and displayed significant correlations between increased sediment Hg concentrations and decreased pike tissue concentrations over time. This suggests that catchment area-to-lake area ratio is an important factor influencing the concentration of atmospherically derived contaminants within lake sediments and their transfer through the food web.

Determination of 90Sr and 210Pb in freshwater fish in Austria

International Nuclear Information System (INIS)

Claudia Landstetter; Merita Sinojmeri; Christian Katzlberger; Arno Achatz

2014-01-01

A method for the determination of 90 Sr and 210 Pb in freshwater fish was developed. The determinations were conducted within a project on behalf of the Federal Ministry of Health. The aim of this project was to get an overview of the activity concentrations of natural and artificial radionuclides in freshwater fish in different lakes in Austria. For sampling the Neusiedler See in Burgenland, two lakes in Styria the Grundlsee and the Toplitz See, and the Zeller See in Salzburg were chosen. Chub (Leuciscus cephalus), pike (Esox lucius), perch (Perca fluviatilis), carp (Cyprinus carpio), catfish (Silurus glanis), pike-perch (Sander lucioperca) and burbot (Lota lota) were analysed. The samples were analysed using strontium specific extraction columns (Eichrom Industries Inc., TrisKem International) and liquid scintillation counting. In the edible parts of the fish samples (no fishbone) values of the activity concentration for 210 Pb varied between 0.009 ± 0.003 and 0.16 ± 0.04 Bq kg freshweight -1 and for 90 Sr between 0.010 ± 0.002 and 0.11 ± 0.02 Bq kg freshweight -1 . In this paper the method for the determination of 90 Sr and 210 Pb is described and the results are discussed. (author)

Flow Behavior Around a Fast-Starting Robotic Fish

Science.gov (United States)

Ma, Ganzhong; Currier, Todd; Modarres-Sadeghi, Yahya

2017-11-01

A robotic fish is used to study the flow behavior around the body of a fast-starting fish as it experiences a fast-start. The robotic fish is designed and built emulating a Northern Pike, Esox Lucius, which can accelerate at up to 245 m/s2. In previous studies, we had focused on the flow around the tail during the fast-start, by using a tail which acted flexibly in the preparatory stage and rigidly in the propulsive stage. We have extended that study by including the fish body in the experimental setup, where the body can bend into a C-shape, so that the influence of the body motion on the resulting flow around the structure can be understood as well. In the tests, the fish can rotate about a vertical axis, where a multi-axis force sensor measures flow forces acting on the body. Synchronized with the force measurement, flow visualizations using bubble image velocimetry are conducted, and the observed shed vortices are related to the peak forces observed during the maneuver.

Fish remnants from the excavations of the Bronze Age barrow near Maryanskoe village (Dnepropetrovsk region, Ukraine

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O. M. Kovalchuk

2014-10-01

Full Text Available The Bronze Age mound (2.5–2.3 kya BC is located near the Maryanskoe village (Apostolovskyi district, Dnepropetrovsk region and was excavated in 1953. The results of determination of the fish remnants, which were found during the excavation, are presented in the paper. Eleven species belonging to 9 genera, 5 families and 5 orders (Acipenseriformes, Cypriniformes, Siluriformes, Esociformes, Perciformes were identified: russian sturgeon Acipenser gueldenstaedtii Brandt et Ratzeburg, 1833, stellate sturgeon A. stellatus Pallas, 1771, common ide Idus idus (Linnaeus, 1758, common roach Rutilus rutilus (Linnaeus, 1758, pontic roach R. frisii (Nordmann, 1840, common bream Abramis brama (Linnaeus, 1758, common carp Cyprinus carpio Linnaeus, 1758, tench Tinca tinca (Linnaeus, 1758, european catfish Silurus glanis Linnaeus, 1758, northern pike Esox lucius (Linnaeus, 1758, and zander Sander lucioperca (Linnaeus, 1758. Most of them are quite common in the Dnieper river basin. It was found that carp fishes predominate in the number of species. Most of the bone remnants in the collection belong to zander, catfish and pike, while common roach, pontic roach and common bream are identified by the few bones. This may indicate a different role of these species in the diet of the local population. The ratio of skeletal elements in the collection is the evidence of the fish cutting on the site. Body length and weight was reconstructed for 64 fish specimens. It was found that they were mature and small-sized, except for catfish, pike and perch. Taking into account the characteristics of the funeral rituals of the Yamna culture population, fish bones from the mound near Maryanskoe can be remnants of the parting meal.

Paternal identity impacts embryonic development for two species of freshwater fish.

Science.gov (United States)

Siddique, Mohammad Abdul Momin; Linhart, Otomar; Krejszeff, Sławomir; Żarski, Daniel; Pitcher, Trevor E; Politis, Sebastian Nikitas; Butts, Ian Anthony Ernest

2017-05-01

Paternal, compared to maternal, contributions were believed to have only a limited influence on embryonic development and larval fitness traits in fishes. Therefore, the perspective of male influence on early life history traits has come under scrutiny. This study was conducted to determine parental effects on the rate of eyed embryos of Ide Leuciscus idus and Northern pike Esox lucius. Five sires and five dams from each species were crossed using a quantitative genetic breeding design and the resulting 25 sib groups of each species were reared to the embryonic eyed stage. We then partition variation in embryonic phenotypic performance to maternal, paternal, and parental interactions using the Restricted Maximum Likelihood (REML) model. Results showed that paternal, maternal, and the paternal×maternal interaction terms were highly significant for both species; clearly demonstrating that certain family combinations were more compatible than others. Paternal effects explained 20.24% of the total variance, which was 2-fold higher than the maternal effects (10.73%) in Ide, while paternal effects explained 18.9% of the total variance, which was 15-fold higher than the maternal effects (1.3%) in Northern pike. Together, these results indicate that male effects are of major importance during embryonic development for these species. Furthermore, this study demonstrates that genetic compatibility between sires and dams plays an important role and needs to be taken into consideration for reproduction of these and likely other economically important fish species. Copyright © 2016 Elsevier Inc. All rights reserved.

Calcium and Strontium in Swedish Waters and Fish, and Accumulation of Strontium-90

Energy Technology Data Exchange (ETDEWEB)

Agnedal, P O

1966-04-15

The purpose of this study has been to investigate the correlation between calcium and strontium in fish in relation to the concentration of these elements in the water. An investigation of the uptake of strontium-90 has also been made and permissible levels of strontium-90 in the water is calculated based upon the uptake in fish muscle tissues. Lakes with calcium concentrations between 2 - 63 mg/l have been studied and samples from the Baltic coastal water are also included. Three fish species are studied, viz. pike (Esox lucius (L.)), perch (Perca fluviatilis (L.)) and roach (Leuciscus rutilus (L.)). Bones, muscle tissues and skin + scales have been analysed. Strontium-90 measurements have been made showing an increase in both water and fish. Calculations show that in water with about 2 mg Ca/l a 10-fold increase of the existing strontium-90 level might give strontium-90 concentrations in fish muscle tissues close to what is permissible. In lakes with calcium concentrations 20 - 40 mg/l the permissible levels for drinking water will be exceeded before the fish consumption would have to be restricted.

Calcium and Strontium in Swedish Waters and Fish, and Accumulation of Strontium-90

International Nuclear Information System (INIS)

Agnedal, P.O.

1966-04-01

The purpose of this study has been to investigate the correlation between calcium and strontium in fish in relation to the concentration of these elements in the water. An investigation of the uptake of strontium-90 has also been made and permissible levels of strontium-90 in the water is calculated based upon the uptake in fish muscle tissues. Lakes with calcium concentrations between 2 - 63 mg/l have been studied and samples from the Baltic coastal water are also included. Three fish species are studied, viz. pike (Esox lucius (L.)), perch (Perca fluviatilis (L.)) and roach (Leuciscus rutilus (L.)). Bones, muscle tissues and skin + scales have been analysed. Strontium-90 measurements have been made showing an increase in both water and fish. Calculations show that in water with about 2 mg Ca/l a 10-fold increase of the existing strontium-90 level might give strontium-90 concentrations in fish muscle tissues close to what is permissible. In lakes with calcium concentrations 20 - 40 mg/l the permissible levels for drinking water will be exceeded before the fish consumption would have to be restricted

Diet of the White-Tailed Eagle During the Breeding Season in the Polesski State Radiation-Ecological Reserve, Belarus

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Valeri V. Yurko

2016-04-01

Full Text Available This article presents data on the diet of the White-Tailed Eagle (Haliaeetus albicilla collected during breeding seasons of 2006–2015 in the Polesski State Radiation-Ecological Reserve. The data included 127 records of prey remains belonging to 27 species of vertebrates collected in and under the nests. We discovered that the diet of the White-Tailed Eagle mainly consists of vertebrates of three classes: fishes (Pisces 48.1 %, birds (Aves 41.7 % and mammals (Mammalia 10.2 %. At the present, the main prey species in the diet of the White-Tailed Eagle in the breeding season are: Bream (Abramis brama – 22.0 %, Black Stork (Ciconia nigra – 12.6 %, Northern Pike (Esox lucius – 10.2 %, Wild Boar (Sus scrofa – 7.1 %, White Stork (Ciconia ciconia – 6.3 %, Mallard (Anas platyrhynchos – 5.5 % and Eurasian Coot (Fulica atra – 5.5 %. Together these species makes up 69.2 % or 2/3 of the diet of this raptor. We also established that cannibalism is a character feature of the local population of White-Tailed Eagle, and its proportion is 2.4 %.

77 FR 2242 - Radio Broadcasting Services; Pike Road, AL

Science.gov (United States)

2012-01-17

...] Radio Broadcasting Services; Pike Road, AL AGENCY: Federal Communications Commission. ACTION: Proposed... Corporation, Inc., proposing the allotment of Channel 228A at Pike Road, Alabama, as its second local service. A staff engineering analysis indicates that Channel 228A can be allotted to Pike Road consistent...

77 FR 64792 - Radio Broadcasting Services; Pike Road, AL

Science.gov (United States)

2012-10-23

...] Radio Broadcasting Services; Pike Road, AL AGENCY: Federal Communications Commission. ACTION: Proposed... Corporation, Inc., proposing the allotment of Channel 228A at Pike Road, Alabama, as the community's second local service. A staff engineering analysis indicates that Channel 228A can be allotted to Pike Road...

77 FR 38761 - Radio Broadcasting Services; Pike Road, AL

Science.gov (United States)

2012-06-29

... Broadcasting Services; Pike Road, AL AGENCY: Federal Communications Commission. ACTION: Proposal rule..., Inc., proposing the allotment of Channel 228A at Pike Road, Alabama, as the community's second local... Pike Road allotment. It is the Commission's policy to refrain from making an allotment to a community...

Cooperation under Predation Risk: Experiments on Costs and Benefits

Science.gov (United States)

Milinski, Manfred; Luthi, Jean H.; Eggler, Rolf; Parker, Geoffrey A.

1997-06-01

Two fish that cooperatively inspect a predator may have negotiated the share of the risk that each takes. A test of both the costs of predator inspection dependent on the distance from which the predator is approached and the potential benefits of cooperation was carried out strictly experimentally. We made either singletons or pairs of dead sticklebacks, Gasterosteus aculeatus, approach hungry pike, Esox lucius, by remote control according to an algorithm that mimicked natural inspection. The predation risk of both single inspectors and parallel inspecting pairs increased with closer inspection distances. A member of an inspecting pair had only about half the risk of that of a single inspector. In pairs, a companion diluted the lead fish's risk of being caught, depending on its distance behind the leader. The absolute risk difference between leader and follower was greatest for close inspection distances and decreased further away from the predator. The leader's relative risk increased with its distance ahead of the laggard. However, for a given distance between leader and laggard, the relative risks to the two fish remained similar with distance from the predator. The cost side of the inequalities that define a 'Prisoner's Dilemma' has thus been measured for this system. In a second experiment the 'attack deterrence hypothesis' of predator inspection (i.e. inspection decreases attack probability) was tested. The pike was offered a choice between two sticklebacks, one of which had carried out a predator inspection visit. There was no indication of attack deterrence through predator inspection.

Long-term trends in the St. Marys River open water fish community

Science.gov (United States)

Schaeffer, Jeffrey S.; Fielder, David G.; Godby, Neal; Bowen, Anjanette; O'Connor, Lisa; Parrish, Josh; Greenwood, Susan; Chong, Stephen; Wright, Greg

2011-01-01

We examined trends in species composition and abundance of the St. Marys River fish community. Abundance data were available approximately once every six years from 1975 through 2006, and size and age data were available from 1995 through 2006. We also compared survey data in 2006 with results of a concurrent creel survey that year, as well as data from prior surveys spanning a 69 year time frame. The St. Marys River fish community was best characterized as a coolwater fish community with apparent little variation in species composition, and only slight variation in overall fish abundance since 1975. However, we did find recent trends in abundance among target species sought by anglers: centrarchids increased, percids appeared stable, and both northern pike Esox lucius and cisco Coregonus artedii declined. Survey results suggested that walleye (Sander vitreus) and yellow perch (Perca flavescens) experienced moderate exploitation but benefited from recent strong recruitment and faster growth. Mechanisms underlying declines of northern pike and cisco were not clear; reduced abundance could have resulted from high exploitation, variation in recruitment, or a combination of both factors. Despite these challenges, the St. Marys River fish community appears remarkably stable. We suggest that managers insure that creel surveys occur simultaneously with assessments, but periodic gill net surveys may no longer provide adequate data in support of recent, more complex management objectives. While additional surveys would add costs, more frequent data might ensure sustainability of a unique fish community that supports a large proportion of angler effort on Lake Huron.

Monitoring mercury in freshwater fish in the oil sands region of Northern Alberta : spatial and temporal comparisons to regional mercury concentrations in fish

International Nuclear Information System (INIS)

Keith, H.

2010-01-01

The Regional Aquatics Monitoring Program (RAMP) was launched to provide a better understanding of the potential effects of oil sands development on aquatic systems, and to address issues important to communities of northern Alberta, such as mercury concentrations in fish. Muskeg dewatering, deforestation, flooding, and air emissions are among the potential mercury sources entering the aquatic systems within the oil sands region. RAMP collects non-lethal tissue samples on an annual basis for mercury analysis from northern pike (Esox lucius), walleye (Sander vitreus), and lake whitefish (Coregonus clupeaformis) in various rivers and lakes within the oil sands region. The purpose is to evaluate the suitability of fisheries resources for human consumption and to evaluate the potential cumulative biological effects on fish. A mercury database was developed based on studies in other regions in Alberta and across Canada in order to provide a regional context to the RAMP monitoring results. Data points from 1975 to 2009 were mapped to evaluate spatial and temporal differences in mercury concentrations and any exceedances of subsistence and general consumption guidelines. This monitoring effort has been instrumental in determining whether changes in mercury concentrations in fish are localized to a specific waterbody or regional in nature.

ECONOMETRIC MODELLING OD THE INFLUENCE OF LAKE WATER QUALITY CHANGES ON FISHING ECONOMY

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Marek Antoni Ramczyk

2017-06-01

Full Text Available The econometric model can be a precise instrument for the analysis of the impact of the natural environment's degradation on fishing economy. This paper aims at analysing the influence of the water quality changes in lake Charzykowskie on the fishing economy. This dissertation present the results of a research on the lake water pollution's impact on fishing economy. The economic-ecological models have been constructed, explaining the changes of economic effects of the lake fishery in the conditions of an increasing water pollution in the epilimnion on the example of the catch of Rutilus rutilus, Abramis brama, Blicca bjoerkna, Coregonus albula, Coregonus lavaretus, Anguilla anguilla and Esox lucius in Lake Charzykowskie. Performed empirical research looked into the influence of the environmental factors on the size of fish catch. Calculations and analysis show clearly that though the habitat factors do influence the catch size of each studied fish species, they do it with different intensity and in various combinations. Both lake water quality and climate factors changes cause measurable effects on fishing industry of lake Charzykowskie. Among all the examined Rutilus rutilus, Abramis brama and Blicca bjoerkna the highest environmental requirements concerning water quality has Blicca bjoerkna. Whereas Abramis brama has slightly higher environmental requirements than Rutilus rutilus. Empirical calculations showed as well that Coregonus albula and Coregonus lavaretus have considerably higher water cleanness requirements than Rutilus rutilus, Abramis brama and Blicca bjoerkna. While when talking about Rutilus rutilus, Abramis brama and Blicca bjoerkna, most water characteristics still rather stimulated these species' development, when it comes to Coregonus albula and Coregonus lavaretus, in general they suppressed their development. The model has also proved quite high habitat requierements of Anquilla anquilla and correctness of the thesis that

PRESENCE OF THE MOST ECONOMICALLY IMPORTANT FISH SPECIES IN THE RIVER DANUBE AND ITS FLOOD ZONES IN SERBIA

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Zoran Marinović

2012-12-01

Full Text Available On the basis of the data published between 1983 and 2008, this paper shows presence of tench (Tinca tinca, carp (Cyprinus carpio, pike (Esox lucius, catfish (Silurus glanis, zander (Sander lucioperca and sterlet (Acipenser ruthenus in the Gornje Podunavlje and Koviljsko-Petrovaradinski Rit Special Nature Reserves and the Begečka Jama Nature Park, as well as in the part of the Danube’s bed between river kilometre 1249- and 1255. The number of these fish species in the River Danube and its flood zones in this part of the Pannonian Basin is decreasing due to the use of inappropriate “tools”, electric current, uncontrolled agricultural and industrial waste dumps, degradation of the habitat. The above mentioned species deserve attention because, according to the Rulebook on declaration and protection of protected and strictly protected wild species of plants, animals and fungi of 2010, in Serbia, T. tinca is a strictly protected species, while C. carpio, E. lucius, S. glanis, S. lucioperca and A. ruthenus are listed as protected. On the basis of the 2009 Fisheries Law in Serbia, permanently closed fishing season was introduced for tench, and closed season in certain periods and fishing ban for individuals under the prescribed size for the rest of the above mentioned species. A. ruthenus is subject to the Law on Ratification of Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES, ANNEX II and is listed in the category of species that may be in danger of extinction. Furthermore, it can be found on the IUCN Red List of Endangered Species of the International Union for Conservation of Nature – VU, which means that it is marked as vulnerable.

Vegetative substrates used by larval northern pike in Rainy and Kabetogama Lakes, Minnesota

Science.gov (United States)

Anne L. Timm; Rodney B. Pierce

2015-01-01

Our objective was to identify characteristics of aquatic vegetative communities used as larval northern pike nursery habitat in Rainy and Kabetogama lakes, glacial shield reservoirs in northern Minnesota. Quatrefoil light traps fished at night were used to sample larval northern pike in 11 potential nursery areas. Larval northern pike were most commonly sampled among...

Technique of the biomechanical analysis of execution of upward jump piked

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Nataliya Batieieva

2016-12-01

Full Text Available Purpose: the biomechanical analysis of execution of upward jump piked. Material & Methods: the following methods of the research were used: theoretical analysis and synthesis of data of special scientific and methodical literature; photographing, video filming, biomechanical computer analysis, pedagogical observation. Students (n=8 of the chair of national choreography of the department of choreographic art of Kiev national university of culture and art took part in carrying out the biomechanical analysis of execution of upward jump piked. Results: the biomechanical analysis of execution of upward jump piked is carried out, the kinematic characteristics (way, speed, acceleration, effort of the general center of weight (GCW and center of weight (CW of biolinks of body of the executor are received (feet, shins, hips, shoulder, forearm, hands. Biokinematic models (phases are constructed. Power characteristics are defined – mechanical work and kinetic energy of links of legs and hands at execution of upward jump piked. Conclusions: it is established that the technique of execution of upward jump piked considerably influences the level of technical training of the qualified sportsmen in gymnastics (sports, in aerobic gymnastics (aerobics, diving and dancing sports.

Bioaccumulation of selenium from coal fly ash and associated environmental hazards in a freshwater fish community

International Nuclear Information System (INIS)

Besser, J.; Giesy, J.; Brown, R.; Herdt, T.; Dawson, G.

1995-01-01

Bioaccumulation of Se by fish from Pigeon River and Pigeon Lake, Michigan, which receive inputs of Se from a coal fly-ash disposal facility, was studied to assess potential hazards of Se toxicity to fish and wildlife. Se concentrations in fish from sites receiving Se inputs from fly ash disposal ponds were significantly greater than concentrations in fish from upstream sites, which were near normal background concentrations. Se bioaccumulation differed substantially among fish species, especially in the most contaminated site, where whole-body Se concentrations for the five species analyzed ranged from 1.4 to 3.8 microg/g (wet wt.). The top predator in the community, northern pike (Esox lucius), had Se concentrations less than those in likely prey species. Among lower-order consumers, Se concentrations were greater in limnetic species (spottail shiner, Notropis hudsonius, and yellow perch, Perca flavescens), than in benthic species (white sucker, Catostomus commersoni, and rock bass, Ambloplites rupestris). Se concentrations in tissues of fish from the lower Pigeon River and Pigeon Lake approached, but did not exceed lowest observable effect concentrations (LOAECs) for Se in tissues of sensitive fish species. However, Se concentrations in several fish species exceeded LOAECs for dietary Se exposure of sensitive species of birds and mammals, suggesting that consumption of fish in these areas may pose a hazard to piscivorous wildlife

PSA-NCAM expression in the teleost optic tectum is related to ecological niche and use of vision in finding food.

Science.gov (United States)

Labak, I; Pavić, V; Zjalić, M; Blažetić, S; Viljetić, B; Merdić, E; Heffer, M

2017-08-01

In this study, tangential migration and neuronal connectivity organization were analysed in the optic tectum of seven different teleosts through the expression of polysialylated neural cell adhesion molecule (PSA-NCAM) in response to ecological niche and use of vision. Reduced PSA-NCAM expression in rainbow trout Oncorhynchus mykiss optic tectum occurred in efferent layers, while in pike Esox lucius and zebrafish Danio rerio it occurred in afferent and efferent layers. Zander Sander lucioperca and European eel Anguilla anguilla had very low PSA-NCAM expression in all tectal layers except in the stratum marginale. Common carp Cyprinus carpio and wels catfish Silurus glanis had the same intensity of PSA-NCAM expression in all tectal layers. The optic tectum of all studied fishes was also a site of tangential migration with sustained PSA-NCAM and c-series ganglioside expression. Anti-c-series ganglioside immunoreactivity was observed in all tectal layers of all analysed fishes, even in layers where PSA-NCAM expression was reduced. Since the optic tectum is indispensable for visually guided prey capture, stabilization of synaptic contact and decrease of neurogenesis and tangential migration in the visual map are an expected adjustment to ecological niche. The authors hypothesize that this stabilization would probably be achieved by down-regulation of PSA-NCAM rather than c-series of ganglioside. © 2017 The Fisheries Society of the British Isles.

Seasonal Variations in the Use of Profundal Habitat among Freshwater Fishes in Lake Norsjø, Southern Norway, and Subsequent Effects on Fish Mercury Concentrations

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Tom Robin Olk

2016-11-01

Full Text Available This study is based on monthly sampling of fish from grates mounted at an industrial water intake, located at a depth of 50 m in Lake Norsjø (Southern Norway during the year 2014, to investigate seasonal variations in the use of the profundal habitat and subsequent variations in total Hg-concentrations in profundal fish. Data on various fish present in a cold and dark hypolimnion of a large, deep, dimictic lake within the upper temperate zone of the Northern Hemisphere are rare. While predominant species such as A. charr (Salvelinus alpinus and E. smelt (Osmerus eperlanus were continuously present in this habitat, whitefish (Coregonus lavaretus occupied this habitat primarily during wintertime, while other common species like brown trout (Salmo trutta, perch (Perca fluviatilis and northern pike (Esox lucius were almost absent. Besides stomach analyses (diet and biometry, stable isotope analyses (δ15N and δ13C and total mercury (Tot-Hg analyses were carried out on the caught fish. The δ13C signature and stomach analyses revealed a combined profundal-pelagic diet for all three species, A. charr with the most profundal-based diet. Length was the strongest predictor for Hg in whitefish and A. charr, while age was the strongest explanatory variable for Hg in E. smelt. A. charr was the only species exhibiting seasonal variation in Hg, highest during winter and spring.

Ecological risk of methylmercury to piscivorous fish of the Great Lakes region.

Science.gov (United States)

Sandheinrich, Mark B; Bhavsar, Satyendra P; Bodaly, R A; Drevnick, Paul E; Paul, Eric A

2011-10-01

Contamination of fish populations with methylmercury is common in the region of the Laurentian Great Lakes as a result of atmospheric deposition and methylation of inorganic mercury. Using fish mercury monitoring data from natural resource agencies and information on tissue concentrations injurious to fish, we conducted a screening-level risk assessment of mercury to sexually mature female walleye (Sander vitreus), northern pike (Esox lucius), smallmouth bass (Micropterus dolomieu), and largemouth bass (Micropterus salmoides) in the Great Lakes and in interior lakes, impoundments, and rivers of the Great Lakes region. The assessment included more than 43,000 measurements of mercury in fish from more than 2000 locations. Sexually mature female fish that exceeded threshold-effect tissue concentrations of 0.20 μg g(-1) wet weight in the whole body occurred at 8% (largemouth bass) to 43% (walleye) of sites. Fish at 3% to 18% of sites were at risk of injury and exceeded 0.30 μg g(-1) where an alteration in reproduction or survival is predicted to occur. Most fish at increased risk were from interior lakes and impoundments. In the Great Lakes, no sites had sexually mature fish that exceeded threshold-effect concentrations. Results of this screening-level assessment indicate that fish at a substantive number of locations within the Great Lakes region are potentially at risk from methylmercury contamination and would benefit from reduction in mercury concentrations.

Evaluation of the toxicity and efficacy of hydrogen peroxide treatments on eggs of warm and cool water fishes

Science.gov (United States)

Rach, J.J.; Gaikowski, M.P.; Howe, G.E.; Schreier, Theresa M.

1998-01-01

The use of hydrogen peroxide in aquaculture is growing and there is a need to develop fundamental guidelines to effectively treat diseased fish. The safety (toxicity) of hydrogen peroxide treatments was determined on eggs of representative warm- and coolwater fish species. Eggs of northern pike (Esox lucius), walleye (Stizostedion vitreum), yellow perch (Pel ca flavescens), white sucker (Catostomus commersoni), lake sturgeon (Acipenser fulvescens), paddlefish (Polyodon spathula), common carp (Cyprinus carpio), and channel catfish (Ictalurus punctatus) were cultured in egg jars or aquaria. Treatments were initiated with non-eyed eggs and continued until all viable eggs had hatched. Eggs were treated daily for 15 min Monday through Friday with either 0, 500, 1000, 3000, or 6000 mu l l(-1) of hydrogen peroxide. For all species, the mean percent hatch was greater in eggs treated with 1000 mu l l(-1) hydrogen peroxide for 15 min than in the untreated controls. Common carp, lake sturgeon, and paddlefish were the least sensitive to hydrogen peroxide with percent hatch ranging from 40 to 48% in the 6000 mu l l(-1) hydrogen peroxide treatment. Fungal infections reduced or eliminated the hatch in most controls whereas nearly all treated eggs remained free of infection; hydrogen peroxide inhibited fungal infections on fish eggs. (C) 1998 Elsevier Science B.V. All rights reserved.

Susceptibility of pike-perch Sander lucioperca to a panel of ranavirus isolates

DEFF Research Database (Denmark)

Jensen, Britt Bang; Holopainen, Riikka; Tapiovaara, Hannele

2011-01-01

The host range of ranaviruses was investigated by challenging pike-perch (Sander lucioperca) with the following ranavirus isolates: epizootic haematopoietic necrosis virus (EHNV), European sheatfish virus (ESV), European catfish virus (ECV), pike-perch iridovirus (PPIV), short-finned eel virus...

Edibility of sport fishes in the Ottawa River near Chalk River Laboratories

Energy Technology Data Exchange (ETDEWEB)

Lee, D.R.; Chaput, T.; Miller, A.; Wills, C.A., E-mail: leed@aecl.ca [Atomic Energy of Canada Limited, Chalk River, Ontario (Canada)

2013-12-15

To address the question of edibility of fish in the Ottawa River near Chalk River Laboratories (CRL), 123 game fish were collected for analysis from four locations: Mackey and Rolphton (45 km and 35 km upstream of Chalk River Laboratories (CRL), respectively), the Sandspit (Pointe au Bapteme) and Cotnam Island (1.6 km and 45 km downstream of CRL, respectively). Twenty-six to thirty-six game fish were collected at each location in 2007 and samples of flesh or bone were analyzed. Trap nets were used to collect only the fish required, allowing release of management-sensitive species. The focus was on walleye (Sander vitreus) because they are abundant and popular among anglers. A few northern pike (Esox lucius) and a smaller number of smallmouth bass (Micropterus dolomieui) were also collected at three of the four sites. Samples of the fish were analyzed for cesium-137 ({sup 137}Cs), strontium-90 ({sup 90}Sr), mercury (Hg), and selected organo-chlorine compounds. Concentrations of {sup 137}Cs in the flesh and {sup 90}Sr in the bones of sport fish were low and similar at all four locations and appear to reflect the global residuals from nuclear weapons testing (primarily in the 1960's) as opposed to releases from CRL. Possible explanations are: 1) Reductions in radionuclide releases from CRL in recent decades and 2) Relatively large foraging ranges of sport fish. Mercury concentrations were elevated in fishes in the Ottawa River and were significantly higher at the Sandspit and Rolphton than at Mackey and Cotnam Island (p<0.001). Mercury concentrations from the four sites are comparable to concentrations in other Ontario and Quebec lakes. It is advisable therefore, that consumers follow the fish consumption guidelines issued by provincial authorities when eating fish from the Ottawa River. Organo-chlorine compounds were not detected in walleye; however, they were detected in all eight of the pike collected at Cotnam Island. The highest organo

Edibility of sport fishes in the Ottawa River near Chalk River Laboratories

International Nuclear Information System (INIS)

Lee, D.R.; Chaput, T.; Miller, A.; Wills, C.A.

2013-01-01

To address the question of edibility of fish in the Ottawa River near Chalk River Laboratories (CRL), 123 game fish were collected for analysis from four locations: Mackey and Rolphton (45 km and 35 km upstream of Chalk River Laboratories (CRL), respectively), the Sandspit (Pointe au Bapteme) and Cotnam Island (1.6 km and 45 km downstream of CRL, respectively). Twenty-six to thirty-six game fish were collected at each location in 2007 and samples of flesh or bone were analyzed. Trap nets were used to collect only the fish required, allowing release of management-sensitive species. The focus was on walleye (Sander vitreus) because they are abundant and popular among anglers. A few northern pike (Esox lucius) and a smaller number of smallmouth bass (Micropterus dolomieui) were also collected at three of the four sites. Samples of the fish were analyzed for cesium-137 ( 137 Cs), strontium-90 ( 90 Sr), mercury (Hg), and selected organo-chlorine compounds. Concentrations of 137 Cs in the flesh and 90 Sr in the bones of sport fish were low and similar at all four locations and appear to reflect the global residuals from nuclear weapons testing (primarily in the 1960's) as opposed to releases from CRL. Possible explanations are: 1) Reductions in radionuclide releases from CRL in recent decades and 2) Relatively large foraging ranges of sport fish. Mercury concentrations were elevated in fishes in the Ottawa River and were significantly higher at the Sandspit and Rolphton than at Mackey and Cotnam Island (p<0.001). Mercury concentrations from the four sites are comparable to concentrations in other Ontario and Quebec lakes. It is advisable therefore, that consumers follow the fish consumption guidelines issued by provincial authorities when eating fish from the Ottawa River. Organo-chlorine compounds were not detected in walleye; however, they were detected in all eight of the pike collected at Cotnam Island. The highest organo-chlorine concentrations were measured in two

METHYLMERCURY BIOACCUMULATION DEPENDENCE ON NORTHERN PIKE AGE AND SIZE IN TWENTY MINNESOTA LAKES

Science.gov (United States)

Mercury accumulation in northern pike muscle tissue (fillets) was found to be directly related to fish age and size. Measurements were made on 173 individual northern pike specimens from twenty lakes across Minnesota. Best fit regressions of mercury fillet concentration (wet wt.)...

Classification of threespine stickleback along the benthic-limnetic axis.

Science.gov (United States)

Willacker, James J; von Hippel, Frank A; Wilton, Peter R; Walton, Kelly M

2010-11-01

Many species of fish display morphological divergence between individuals feeding on macroinvertebrates associated with littoral habitats (benthic morphotypes) and individuals feeding on zooplankton in the limnetic zone (limnetic morphotypes). Threespine stickleback (Gasterosteus aculeatus L.) have diverged along the benthic-limnetic axis into allopatric morphotypes in thousands of populations and into sympatric species pairs in several lakes. However, only a few well known populations have been studied because identifying additional populations as either benthic or limnetic requires detailed dietary or observational studies. Here we develop a Fisher's linear discriminant function based on the skull morphology of known benthic and limnetic stickleback populations from the Cook Inlet Basin of Alaska and test the feasibility of using this function to identify other morphologically divergent populations. Benthic and limnetic morphotypes were separable using this technique and of 45 populations classified, three were identified as morphologically extreme (two benthic and one limnetic), nine as moderately divergent (three benthic and six limnetic) and the remaining 33 populations as morphologically intermediate. Classification scores were found to correlate with eye size, the depth profile of lakes, and the presence of invasive northern pike (Esox lucius). This type of classification function provides a means of integrating the complex morphological differences between morphotypes into a single score that reflects the position of a population along the benthic-limnetic axis and can be used to relate that position to other aspects of stickleback biology.

Rotenone formulation fate in Lake Davis following the 2007 treatment.

Science.gov (United States)

Vasquez, Martice E; Rinderneck, Janna; Newman, Julie; McMillin, Stella; Finlayson, Brian; Mekebri, Abdou; Crane, David; Tjeerdema, Ronald S

2012-05-01

In September 2007, Lake Davis (near Portola, California) was treated by the California Department of Fish and Game with CFT Legumine, a rotenone formulation, to eradicate the invasive northern pike (Esox lucius). The objective of this report is to describe the fate of the five major formulation constituents-rotenone, rotenolone, methyl pyrrolidone (MP), diethylene glycol monethyl ether (DEGEE), and Fennedefo 99-in water, sediment, and brown bullhead catfish (Ameiurus nebulosus; a rotenone-resistant species) by determination of their half-lives (t(1/2)) and pseudo first-order dissipation rate constants (k). The respective t(1/2) values in water for rotenone, rotenolone, MP, DEGEE, and Fennedefo 99 were 5.6, 11.1, 4.6, 7.7, and 13.5 d; in sediments they were 31.1, 31.8, 10.0, not able to calculate, and 48.5 d; and in tissues were 6.1, 12.7, 3.7, 3.2, and 10.4 d, respectively. Components possessing low water solubility values (rotenone and rotenolone) persisted longer in sediments (not detectable after 157 d) and tissues (<212 d) compared with water, whereas the water-miscible components (MP and DEGEE) dissipated more quickly from all matrices, except for Fennedefo 99, which was the most persistent in water (83 d). None of the constituents was found to bioaccumulate in tissues as a result of treatment. In essence, the physicochemical properties of the chemical constituents effectively dictated their fate in the lake following treatment. Copyright © 2012 SETAC.

Contamination of mercury in the biological and physical environment of northwest Quebec

Energy Technology Data Exchange (ETDEWEB)

Delisle, C E

1977-10-01

Mercury and its compounds are present in the environment of northwest Quebec and present serious risks to human health. This study shows that all bodies of water investigated yield fish with mercury concentrations in excess of the Canadian safe limit (0.5 ppm) for human consumption. Data are reported for total mercury in 902 fishes from 58 bodies of water sampled between 1972 and 1976. Out of these, 158 were Coregonus clupeaformis with an average concentration of 0.27 ppm of mercury, 82 were Catostomus commersoni with 0.38 ppm, 287 were Stizostedion vitreum vitreum with 0.79 ppm, 364 were Esox lucius with 0.84 ppm, and 11 were Acipenser fulvescens with 0.36 ppm. It is concluded that walleye and pike are rarely safe to eat in northwest Quebec. Data on limited numbers of molluscs, benthic organisms, plankton, aquatic birds and aquatic mammals from this area are also reported and show only a few in excess of the safe level. Exceptions are found in ducks, grebes, mergansers and otters, mink and marten. Mercury in sediments varied from 50 ppb (background level) to more than 1000 ppb, depending on the body of water and its proximity to zones of influence of human activity. Surface waters rarely exceed 0.20 ppb mercury even in areas where sediment contamination is high. Ground water reached 48 ppb in some areas, however, suggesting contamination from natural sources.

Subsequent experimental results of the research of the removal of the 134,137Cs from the meat of animals

International Nuclear Information System (INIS)

Il'enko, A.I.; Krapivko, T.P.

1992-01-01

Expriments on decontamination of meat of Susscrofa, Alces alces, Esox lucius, Tinca tinca, Rutilus rutilus, Carassius carassius were presented. The studies added the following positive results: increasing frequency of decontamination solution change reduced decontamination total duration concerning meat of animals and fishes two fold at least. KMnO 4 addition to the main solution accelerated washout of radioactive cesium. Preliminary fishes a meat freezing considerably increased decontamination efficiency. Decontamination process performed at 4-5 deg C induced no violation of the process and prevented the products from spoiling

Preliminary assessment of the impact of fluctuating water levels on northern pike in Reindeer Lake

International Nuclear Information System (INIS)

Chen, M.

1993-03-01

Reindeer Lake in north eastern Saskatchewan regulates water levels for the Island Falls hydroelectric power plant. Since inception of the Whitesand Dam on the lake, there have been concerns that fluctuating water levels could be adversely impacting the habitat and population of northern pike in the lake. The extent of water level fluctuations during the pike spawning period of Reindeer Lake and its effect on spawning success was investigated. Since construction of the Whitesand Dam in 1942 Reindeer Lake water levels have averaged ca 1.71 m higher than had the dam not existed, creating ca 430 km 2 of new surface area. Much of this area is shallow water and prone to growth of aquatic vegetation, which is suitable spawning and nursery habitat for northern pike. Annual and periodic water level fluctuations of Reindeer Lake have been higher than under natural conditions. During northern pike spawning and nursing periods, water levels in the lake have generally increased, in 60 out of 64 y. It is concluded that operation of the dam has not caused any direct negative impacts on the northern pike habitat in the lake. 2 refs., 4 figs., 4 tabs

Convergent evolution of jaws between spinosaurid dinosaurs and pike conger eels

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Romain Vullo

2016-12-01

Full Text Available Spinosaurs represent a group of peculiar theropod dinosaurs that have often been described as “crocodile-mimic”, predominantly fish-eating predators, and recently claimed to have been semi-aquatic animals. Here we report a suite of craniodental characters unexpectedly shared by spinosaurs and pike conger eels. Pike conger eels are predatory, mainly piscivorous bottom-dwelling anguilliform fishes that inhabit marine and brackish environments. These two groups of dinosaurs and fishes show a mediolaterally compressed, elongated rostrum, a terminal “rosette” bearing enlarged teeth in both upper and lower jaws, and a notch posterior to the premaxillary “rosette” characterized by the presence of reduced teeth. The morphological convergence observed in the jaws of these two distantly related groups of vertebrates may result from similar feeding behaviours. This typical jaw morphology likely represents an effective biomechanical adaptation for biting and grabbing elusive prey items in low-light aquatic environments. Associated with this specialized snout morphology, numerous integumentary mechanoreceptors involved in prey detection are present in both spinosaurs and pike congers. Our new observations provide an additional convincing argument regarding the decades-long and widely debated lifestyle of spinosaurs.

Aquatic assessment of the Pike Hill Copper Mine Superfund site, Corinth, Vermont

Science.gov (United States)

Piatak, Nadine M.; Argue, Denise M.; Seal, Robert R.; Kiah, Richard G.; Besser, John M.; Coles, James F.; Hammarstrom, Jane M.; Levitan, Denise M.; Deacon, Jeffrey R.; Ingersoll, Christopher G.

2013-01-01

The Pike Hill Copper Mine Superfund site in Corinth, Orange County, Vermont, includes the Eureka, Union, and Smith mines along with areas of downstream aquatic ecosystem impairment. The site was placed on the U.S. Environmental Protection Agency (USEPA) National Priorities List in 2004. The mines, which operated from about 1847 to 1919, contain underground workings, foundations from historical structures, several waste-rock piles, and some flotation tailings. The mine site is drained to the northeast by Pike Hill Brook, which includes several wetland areas, and to the southeast by an unnamed tributary that flows to the south and enters Cookville Brook. Both brooks eventually drain into the Waits River, which flows into the Connecticut River. The aquatic ecosystem at the site was assessed using a variety of approaches that investigated surface-water quality, sediment quality, and various ecological indicators of stream-ecosystem health. The degradation of surface-water quality is caused by elevated concentrations of copper, and to a lesser extent cadmium, with localized effects caused by aluminum, iron, and zinc. Copper concentrations in surface waters reached or exceeded the USEPA national recommended chronic water-quality criteria for the protection of aquatic life in all of the Pike Hill Brook sampling locations except for the location farthest downstream, in half of the locations sampled in the tributary to Cookville Brook, and in about half of the locations in one wetland area located in Pike Hill Brook. Most of these same locations also contained concentrations of cadmium that exceeded the chronic water-quality criteria. In contrast, surface waters at background sampling locations were below these criteria for copper and cadmium. Comparison of hardness-based and Biotic Ligand Model (BLM)-based criteria for copper yields similar results with respect to the extent or number of stations impaired for surface waters in the affected area. However, the BLM

Study of pike-perch (Sander lucioperca fishery from Razim Lake, Danube delta Romania

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CERNIȘENCU Irina

2018-05-01

Full Text Available The Razim Lake is a great part of the Danube Delta Biosphere Reserve (DDBR, with a surface of 54,000 ha. Fish fauna from Razim lake include pike-perch (Sander lucioperca as one of the main top predators of fish community, however ecological significance indicates accessory species, recedent as dominance, sometimes been subrecedent species like in 2011 and 2012 sampling, but constant species regarding frequency in sampling. Otherwise, pike-perch is an important value DDBR fishery species with an average of 5% in total catch, range 2-10%, from what Razim lake contributes with average 71%, range 41-95% in the 1960-2015 period. Razim Lake has been in average 13%, range 1-40% from total Razim lake catch, in the same period of time. Since in RBDD has been fishing up to 2000 fisherman, in Razim lake activated up to 500 fishermen, however nowadays number of fishermen was regulated at lower range. Catch data series shows a continuous stock decline trend, considered to be a consequences of habitat degradation and over-exploitation. Fish stock estimation in last 15 years (2001-2016 support the hypothesis of over-exploitation. Based on length frequency structure of landings, the growth and exploitation parameters have been estimated as well as the average biomass and the maximum sustainable yields for the Razim lake pike-perch stock. Recommendation concerning fisheries management towards sustainable fishing of pike-perch stock, as increasing of cod-end seine mesh size and decreasing of fishing effort regulation are outlined.

Occurrence of /sup 22/Na in some species of Canadian biota

Energy Technology Data Exchange (ETDEWEB)

Guthrie, J E

1965-09-01

Cosmic-ray spallation of argon and fallout from testing of high-yield nuclear weapons have increased the amount of /sup 22/Na present in the environment. Consequently, it has been possible to measure /sup 22/Na in Alaskan natives, caribou, elk, and some foods. Samples of flora and fauna were routinely collected in the vicinity of Pinawa, Manitoba, as a part of the Whiteshell Nuclear Research Establishment's radiation survey program. Gamma spectrometric analysis methods revealed the presence of /sup 22/Na in samples taken during 1964, in addition to other long-lived fission products such as /sup 144/Ce, /sup 125/Sb, /sup 106/Ru, /sup 137/Cs, and /sup 54/Mn. Sodium-22 was measured in samples of muscle tissue taken from the red squirrel (Tamiasciurus sp.) and hare (Lepus americanus), but was not detected in the flesh of the short-tailed weasel (Mustela erminea). Sodium-22 was detected neither in the sweet (white) clover which grew profusely in the area where the mammals were trapped nor in composite samples of Winnipeg River water in any of the species of fish taken from the river during this period: rock bass (Amblopletes rupestris), sucker (Castostomus sp.), pike (Esox lucius), pickerel (Stizostedion vitreum), and sauger (Stizostedion canadense). However, /sup 22/Na has been reported in bass caught in the Columbia River, Washington. Potassium-40 and /sup 137/Cs means in the samples examined indicate an apparent increase in the amounts of /sup 137/Cs. The amount of /sup 22/Na measured in rabbits is much less than the maximum permissible body burden for the nuclide (10 ..mu..C).

Salmonid Chromosome Evolution as Revealed by a Novel Method for Comparing RADseq Linkage Maps

Science.gov (United States)

Gosselin, Thierry; Normandeau, Eric; Lamothe, Manuel; Isabel, Nathalie; Audet, Céline; Bernatchez, Louis

2016-01-01

Whole genome duplication (WGD) can provide material for evolutionary innovation. Family Salmonidae is ideal for studying the effects of WGD as the ancestral salmonid underwent WGD relatively recently, ∼65 Ma, then rediploidized and diversified. Extensive synteny between homologous chromosome arms occurs in extant salmonids, but each species has both conserved and unique chromosome arm fusions and fissions. Assembly of large, outbred eukaryotic genomes can be difficult, but structural rearrangements within such taxa can be investigated using linkage maps. RAD sequencing provides unprecedented ability to generate high-density linkage maps for nonmodel species, but can result in low numbers of homologous markers between species due to phylogenetic distance or differences in library preparation. Here, we generate a high-density linkage map (3,826 markers) for the Salvelinus genera (Brook Charr S. fontinalis), and then identify corresponding chromosome arms among the other available salmonid high-density linkage maps, including six species of Oncorhynchus, and one species for each of Salmo, Coregonus, and the nonduplicated sister group for the salmonids, Northern Pike Esox lucius for identifying post-duplicated homeologs. To facilitate this process, we developed MapComp to identify identical and proximate (i.e. nearby) markers between linkage maps using a reference genome of a related species as an intermediate, increasing the number of comparable markers between linkage maps by 5-fold. This enabled a characterization of the most likely history of retained chromosomal rearrangements post-WGD, and several conserved chromosomal inversions. Analyses of RADseq-based linkage maps from other taxa will also benefit from MapComp, available at: https://github.com/enormandeau/mapcomp/ PMID:28173098

Phytoplankton response to fish-induced environmental changes in a temperate shallow pond-type lake

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Napiórkowska-Krzebietke Agnieszka

2017-12-01

Full Text Available Since 1967, the temperate, shallow, pond-type Lake Warniak has been subjected to different biomanipulation methods including the introduction of common carp, Cyprinus carpio L., grass carp, Ctenopharyngodon idella (Val., silver carp, Hypophthalmichthys molitrix (Val., and bighead carp, Hypophthalmichthys nobilis (Richardson and then their removal in an effort to control macrophytes and phytoplankton. Recently, pilot stocking with predatory fish, particularly pike, Esox lucius L., has also been conducted. Hence, an examination of the long-term response patterns of phytoplankton to multiple fish-induced stressors was undertaken. In recent years, Chara domination (2000-2004 has helped to stabilize a clear-water state, high/good ecological status, and meso-eutrophic conditions. After the disappearance of Charales in 2004, the rapid, unstable changes in phytoplankton biomass, structure, and biodiversity suggested a shift toward a turbid-water state. As a result, the phytoplankton assemblages changed from those dominated by cryptophytes Y+X2+X1+LO (2000-2004 through those dominated by cyanobacteria K (2005-2008, dinoflagellates LO+Y (2009-2011, and cryptophytes Y+LO+F+X2 (2012, to those dominated by diatoms D+K+P+A (2013-2014 with representative taxa that occur in nutrient-rich and/or nutrient-poor water bodies. The 1967-2014 changes indicated that four periods, two with clear-water state and two with turbid-water state, alternately, one after the other, resulted from different fish pressure. Higher autochthonous fish biomass was usually accompanied by lower phytoplankton biomass. In contrast, the introduction of Cyprinidae fish had a stimulating effect on summer phytoplankton dominated by cyanobateria. Among the nutrients, only phosphorus played an important role.

INVESTIGATIONS ON TECHNOLOGICAL PARAMETERS IN INTENSIVE REARING OF PIKE-PERCH (STIZOSTEDION LUCIOPERCA

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Tamás Molnár

2000-06-01

Full Text Available Market demands and competition force the production of high quality freshwater fish in European aquaculture. In Hungary pike-perch is the most „noble” and perhaps the most sensitive fish species. One of the constraints of the increasing its production in natural waters, reservoirs and ponds is the shortage in adequate sized alevins. The possible solution of this problem can be the elaboration of intensive rearing technics of pond prereared fry. The aims of the present work were to test the growing capacity, feed conversion and survival of pike-perch in intensive circumstances. Fish were kept in 130 l aquaria working in recirculation system at an average water temperature of 220.5 C. Two stocking densities were applied (18 and 36 fish/aquarium. Minced fish (test and live prey (control were offered twice a day till satiation in two replications. The experiment lasted 4 weeks. According to our results minced fish is suitable feed in the intensive rearing of pike-perch alevins. Daily food intake was only influenced significantly by different feeds (2.01g vs.4.53 g, test and control, respectively. Feeding and stocking density had significant effect (P=0.001 and 0.017 on the average weight gain (0.52 g and 1.40 g for minced fish and live feed, respectively, 1.02 g in lower and 0.90 g in higher density. Owning to the high variances treatment effect on feed conversion proved to be not significant. Average survival of the minced fish fed group was 62.2 % vs. 78.8 % of the live fish fed alevins. This difference was significant (P<0.01 in the first two weeks when almost all of the losses happened due to cannibalism and other unknown reasons. Based on our results a period of 10–14 days is needed for pre-reared pike-perch to change gradually their feeding from zooplankton to minced fish diet.

Shale fabric and velocity anisotropy : a study from Pikes Peak Waseca Oil Pool, Saskatchewan

Energy Technology Data Exchange (ETDEWEB)

Newrick, R.T.; Lawton, D.C. [Calgary Univ., AB (Canada). Dept. of Geology and Geophysics

2004-07-01

The stratigraphic sequence of the Pikes Peaks region in west-central Saskatchewan consists of a thick sequence of shale overlying interbedded sandstones, shale and coal from the Mannville Group. Hydrocarbons exist in the Waseca, Sparky and General Petroleum Formations in the Pikes Peak region. The primary objective of this study was to examine the layering of clay minerals in the shale and to find similarities or differences between samples that may be associated with velocity anisotropy. Anisotropy is of key concern in areas with thick shale sequences. Several processing algorithms include corrections for velocity anisotropy in order for seismic images to be well focused and laterally positioned. This study also estimated the Thomsen parameters of anisotropy through field studies. The relationship between the shale fabric and anisotropy was determined by photographic core samples from Pike Peak using a scanning electron microscope. Shale from two wells in the Waseca Oil Pool demonstrated highly variable fabric over a limited vertical extent. No layering of clay minerals was noted at the sub-centimetre scale. Transverse isotropy of the stratigraphy was therefore considered to be mainly intrinsic. 7 refs., 3 tabs., 9 figs.

Predicting future changes in Muskegon River Watershed game fish distributions under future land cover alteration and climate change scenarios

Science.gov (United States)

Steen, Paul J.; Wiley, Michael J.; Schaeffer, Jeffrey S.

2010-01-01

Future alterations in land cover and climate are likely to cause substantial changes in the ranges of fish species. Predictive distribution models are an important tool for assessing the probability that these changes will cause increases or decreases in or the extirpation of species. Classification tree models that predict the probability of game fish presence were applied to the streams of the Muskegon River watershed, Michigan. The models were used to study three potential future scenarios: (1) land cover change only, (2) land cover change and a 3°C increase in air temperature by 2100, and (3) land cover change and a 5°C increase in air temperature by 2100. The analysis indicated that the expected change in air temperature and subsequent change in water temperatures would result in the decline of coldwater fish in the Muskegon watershed by the end of the 21st century while cool- and warmwater species would significantly increase their ranges. The greatest decline detected was a 90% reduction in the probability that brook trout Salvelinus fontinalis would occur in Bigelow Creek. The greatest increase was a 276% increase in the probability that northern pike Esox lucius would occur in the Middle Branch River. Changes in land cover are expected to cause large changes in a few fish species, such as walleye Sander vitreus and Chinook salmon Oncorhynchus tshawytscha, but not to drive major changes in species composition. Managers can alter stream environmental conditions to maximize the probability that species will reside in particular stream reaches through application of the classification tree models. Such models represent a good way to predict future changes, as they give quantitative estimates of the n-dimensional niches for particular species.

Late Pleistocene fishes of the Tennessee River Basin: an analysis of a late Pleistocene freshwater fish fauna from Bell Cave (site ACb-2) in Colbert County, Alabama, USA.

Science.gov (United States)

Jacquemin, Stephen J; Ebersole, Jun A; Dickinson, William C; Ciampaglio, Charles N

2016-01-01

The Tennessee River Basin is considered one of the most important regions for freshwater biodiversity anywhere on the globe. The Tennessee River Basin currently includes populations of at least half of the described contemporary diversity of extant North American freshwater fishes, crayfish, mussel, and gastropod species. However, comparatively little is known about the biodiversity of this basin from the Pleistocene Epoch, particularly the late Pleistocene (∼10,000 to 30,000 years B.P.) leading to modern Holocene fish diversity patterns. The objective of this study was to describe the fish assemblages of the Tennessee River Basin from the late Pleistocene using a series of faunas from locales throughout the basin documented from published literature, unpublished reports, and an undocumented fauna from Bell Cave (site ACb-2, Colbert County, AL). Herein we discuss 41 unequivocal taxa from 10 late Pleistocene localities within the basin and include a systematic discussion of 11 families, 19 genera, and 24 identifiable species (28 unequivocal taxa) specific to the Bell Cave locality. Among the described fauna are several extirpated (e.g., Northern Pike Esox lucius, Northern Madtom Noturus stigmosus) and a single extinct (Harelip Sucker Moxostoma lacerum) taxa that suggest a combination of late Pleistocene displacement events coupled with more recent changes in habitat that have resulted in modern basin diversity patterns. The Bell Cave locality represents one of the most intact Pleistocene freshwater fish deposits anywhere in North America. Significant preservational, taphonomic, sampling, and identification biases preclude the identification of additional taxa. Overall, this study provides a detailed look into paleo-river ecology, as well as freshwater fish diversity and distribution leading up to the contemporary biodiversity patterns of the Tennessee River Basin and Mississippi River Basin as a whole.

Late Pleistocene fishes of the Tennessee River Basin: an analysis of a late Pleistocene freshwater fish fauna from Bell Cave (site ACb-2 in Colbert County, Alabama, USA

Directory of Open Access Journals (Sweden)

Stephen J. Jacquemin

2016-02-01

Full Text Available The Tennessee River Basin is considered one of the most important regions for freshwater biodiversity anywhere on the globe. The Tennessee River Basin currently includes populations of at least half of the described contemporary diversity of extant North American freshwater fishes, crayfish, mussel, and gastropod species. However, comparatively little is known about the biodiversity of this basin from the Pleistocene Epoch, particularly the late Pleistocene (∼10,000 to 30,000 years B.P. leading to modern Holocene fish diversity patterns. The objective of this study was to describe the fish assemblages of the Tennessee River Basin from the late Pleistocene using a series of faunas from locales throughout the basin documented from published literature, unpublished reports, and an undocumented fauna from Bell Cave (site ACb-2, Colbert County, AL. Herein we discuss 41 unequivocal taxa from 10 late Pleistocene localities within the basin and include a systematic discussion of 11 families, 19 genera, and 24 identifiable species (28 unequivocal taxa specific to the Bell Cave locality. Among the described fauna are several extirpated (e.g., Northern Pike Esox lucius, Northern Madtom Noturus stigmosus and a single extinct (Harelip Sucker Moxostoma lacerum taxa that suggest a combination of late Pleistocene displacement events coupled with more recent changes in habitat that have resulted in modern basin diversity patterns. The Bell Cave locality represents one of the most intact Pleistocene freshwater fish deposits anywhere in North America. Significant preservational, taphonomic, sampling, and identification biases preclude the identification of additional taxa. Overall, this study provides a detailed look into paleo-river ecology, as well as freshwater fish diversity and distribution leading up to the contemporary biodiversity patterns of the Tennessee River Basin and Mississippi River Basin as a whole.

Effects of predation stress and food ration on perch gut microbiota.

Science.gov (United States)

Zha, Yinghua; Eiler, Alexander; Johansson, Frank; Svanbäck, Richard

2018-02-06

Gut microbiota provide functions of importance to influence hosts' food digestion, metabolism, and protection against pathogens. Factors that affect the composition and functions of gut microbial communities are well studied in humans and other animals; however, we have limited knowledge of how natural food web factors such as stress from predators and food resource rations could affect hosts' gut microbiota and how it interacts with host sex. In this study, we designed a two-factorial experiment exposing perch (Perca fluviatilis) to a predator (pike, Esox lucius), and different food ratios, to examine the compositional and functional changes of perch gut microbiota based on 16S rRNA amplicon sequencing. We also investigated if those changes are host sex dependent. We showed that overall gut microbiota composition among individual perch significantly responded to food ration and predator presence. We found that species richness decreased with predator presence, and we identified 23 taxa from a diverse set of phyla that were over-represented when a predator was present. For example, Fusobacteria increased both at the lowest food ration and at predation stress conditions, suggesting that Fusobacteria are favored by stressful situations for the host. In concordance, both food ration and predation stress seemed to influence the metabolic repertoire of the gut microbiota, such as biosynthesis of other secondary metabolites, metabolism of cofactors, and vitamins. In addition, the identified interaction between food ration and sex emphasizes sex-specific responses to diet quantity in gut microbiota. Collectively, our findings emphasize an alternative state in gut microbiota with responses to changes in natural food webs depending on host sex. The obtained knowledge from this study provided us with an important perspective on gut microbiota in a food web context.

Development of new VNTR markers for pike and assessment of variability at di- and tetranucleotide repeat microsatellite loci

DEFF Research Database (Denmark)

Hansen, Michael Møller; Taggart, J.B.; Meldrup, Dorte

1999-01-01

Levels of variation at six VNTR (variable number of tandem repeats) loci, one minisatellite and five microsatellite loci, isolated from tri- and tetranucleotide enriched DNA libraries for northern pike were generally low in two Danish populations (1-4 alleles; expected heterozygosity 0-0.57), tho......Levels of variation at six VNTR (variable number of tandem repeats) loci, one minisatellite and five microsatellite loci, isolated from tri- and tetranucleotide enriched DNA libraries for northern pike were generally low in two Danish populations (1-4 alleles; expected heterozygosity 0...

Isolation of an iridovirus from pike-perch Stizostedion lucioperca

DEFF Research Database (Denmark)

Tapiovaara, H.; Olesen, Niels Jørgen; Linden, J.

1998-01-01

We have isolated a large virus from pike-perch Stizostedion lucioperca fingerlings with no signs of disease. The biochemical, structural, and serological properties of this newly isolated virus suggest that it belongs to the family Iridoviridae. The virus multiplied and was cytopathogenic...... fish iridoviruses. It is an enveloped icosahedral DNA virus. The diameter of the nucleocapsid in thin sections was 127 +/- 3 nm; in negatively stained preparates the size of the enveloped virus varied from 147 to 187 nm. In immunofluorescence the virus was stained by rabbit antisera against EHN...

Can natural variability trigger effects on fish and fish habitat as defined in environment Canada's metal mining environmental effects monitoring program?

Science.gov (United States)

Mackey, Robin; Rees, Cassandra; Wells, Kelly; Pham, Samantha; England, Kent

2013-01-01

The Metal Mining Effluent Regulations (MMER) took effect in 2002 and require most metal mining operations in Canada to complete environmental effects monitoring (EEM) programs. An "effect" under the MMER EEM program is considered any positive or negative statistically significant difference in fish population, fish usability, or benthic invertebrate community EEM-defined endpoints. Two consecutive studies with the same statistically significant differences trigger more intensive monitoring, including the characterization of extent and magnitude and investigation of cause. Standard EEM study designs do not require multiple reference areas or preexposure sampling, thus results and conclusions about mine effects are highly contingent on the selection of a near perfect reference area and are at risk of falsely labeling natural variation as mine related "effects." A case study was completed to characterize the natural variability in EEM-defined endpoints during preexposure or baseline conditions. This involved completing a typical EEM study in future reference and exposure lakes surrounding a proposed uranium (U) mine in northern Saskatchewan, Canada. Moon Lake was sampled as the future exposure area as it is currently proposed to receive effluent from the U mine. Two reference areas were used: Slush Lake for both the fish population and benthic invertebrate community surveys and Lake C as a second reference area for the benthic invertebrate community survey. Moon Lake, Slush Lake, and Lake C are located in the same drainage basin in close proximity to one another. All 3 lakes contained similar water quality, fish communities, aquatic habitat, and a sediment composition largely comprised of fine-textured particles. The fish population survey consisted of a nonlethal northern pike (Esox lucius) and a lethal yellow perch (Perca flavescens) survey. A comparison of the 5 benthic invertebrate community effect endpoints, 4 nonlethal northern pike population effect endpoints

Behavioural interactions between prey (trout smolts) and predators (pike and pikeperch) in an impounded river

DEFF Research Database (Denmark)

Jepsen, Niels; Pedersen, Susanne; Thorstad, E.

2000-01-01

pikeperch and few female pike have adjusted their behaviour to predation on smolts during the smolt run. The smolt predation in this man-made reservoir is higher than in natural lakes, probably due to the changed physical environment and introduced predators, such as pikeperch. The outlet sluice practice...

Monogenean Parasites on the Gills of Some Fish Species from Lakes Sapanca and Durusu, Turkey.

Directory of Open Access Journals (Sweden)

Erhan Soylu

2015-12-01

Full Text Available Sapanca ve Durusu Göllerindeki bazı balık türlerinin solungaçlarındaki Monogenean parazitler. Sapanca ve Durusu göllerindeki 11 balık türü; Silurus glanis, Esox lucius, Rutilus rutilus, Vimba vimba, Scardinius erythrophthalmus, Abramis brama, Tinca tinca, Cyprinus carpio, Rhodeus sericeus amarus, Chalcalburnus chalcoides, Rutilus frisii’den Monogenean parazitler çalışıldı. Dactylogyrus, Silurodiscoides, Tetraonchus ve Paradiplozoon genuslarına ait 19 monogenoid türü; Dactylogyrus sphyrna, D. vistulae, D. phoxini, D. difformis, D. difformoides, D. chalcalburni, D. bicornis D. nybelini, D. frisii, D. crucifer, D. cornu, D.cornoides, D. extensus, D. macracanthus, D. izjumovae, Silurodiscoides siluri, S.vistulensis, Tetraonchus monenteron ve Paradiplozoon sp. bulundu. D.bicornis, D.nybelini ve D.izjumovae Türkiye için yeni kayıtlardır

Baseline assessment of groundwater quality in Pike County, Pennsylvania, 2015

Science.gov (United States)

Senior, Lisa A.; Cravotta, Charles A.

2017-12-29

The Devonian-age Marcellus Shale and the Ordovician-age Utica Shale, which have the potential for natural gas development, underlie Pike County and neighboring counties in northeastern Pennsylvania. In 2015, the U.S. Geological Survey, in cooperation with the Pike County Conservation District, conducted a study that expanded on a previous more limited 2012 study to assess baseline shallow groundwater quality in bedrock aquifers in Pike County prior to possible extensive shale-gas development. Seventy-nine water wells ranging in depths from 80 to 610 feet were sampled during June through September 2015 to provide data on the presence of methane and other aspects of existing groundwater quality in the various bedrock geologic units throughout the county, including concentrations of inorganic constituents commonly present at low values in shallow, fresh groundwater but elevated in brines associated with fluids extracted from geologic formations during shale-gas development. All groundwater samples collected in 2015 were analyzed for bacteria, dissolved and total major ions, nutrients, selected dissolved and total inorganic trace constituents (including metals and other elements), radon-222, gross alpha- and gross beta-particle activity, dissolved gases (methane, ethane, and propane), and, if sufficient methane was present, the isotopic composition of methane. Additionally, samples from 20 wells distributed throughout the county were analyzed for selected man-made volatile organic compounds, and samples from 13 wells where waters had detectable gross alpha activity were analyzed for radium-226 on the basis of relatively elevated gross alpha-particle activity.Results of the 2015 study show that groundwater quality generally met most drinking-water standards for constituents and properties included in analyses, but groundwater samples from some wells had one or more constituents or properties, including arsenic, iron, manganese, pH, bacteria, sodium, chloride, sulfate

Dispersal, growth and diet of stocked and wild northern pike fry in a shallow natural lake, with implications for management of stocking programs

DEFF Research Database (Denmark)

Skov, Christian; Koed, Anders; Baastrup-Spohr, Lars

2011-01-01

season. Stomach analyses revealed that the stocked pike ingested less diverse prey items and had higher fractions of empty stomachs throughout the study period. Overall, the fraction of stocked pike in samples rapidly declined over the season, which may have been caused by differential survival...... low fitness of stocked individuals in competition with wild conspecifics: (1) genetic-based local maladaptation among the stocked fish and (2) carryover effects from the hatchery. The latter may be less likely because the fry stocked were the offspring of wild fish and only spent a few weeks...

Predation by Northern Pikeminnow and tiger muskellunge on juvenile salmonids in a high–head reservoir: Implications for anadromous fish reintroductions

Science.gov (United States)

Sorel, Mark H.; Hansen, Adam G.; Connelly, Kristin A.; Wilson, Andrew C.; Lowery, Erin D.; Beauchamp, David A.

2016-01-01

The feasibility of reintroducing anadromous salmonids into reservoirs above high-head dams is affected by the suitability of the reservoir habitat for rearing and the interactions of the resident fish with introduced fish. We evaluated the predation risk to anadromous salmonids considered for reintroduction in Merwin Reservoir on the North Fork Lewis River in Washington State for two reservoir use-scenarios: year-round rearing and smolt migration. We characterized the role of the primary predators, Northern Pikeminnow Ptychocheilus oregonensis and tiger muskellunge (Northern Pike Esox lucius × Muskellunge E. masquinongy), by using stable isotopes and stomach content analysis, quantified seasonal, per capita predation using bioenergetics modeling, and evaluated the size and age structures of the populations. We then combined these inputs to estimate predation rates of size-structured population units. Northern Pikeminnow of FL ≥ 300 mm were highly cannibalistic and exhibited modest, seasonal, per capita predation on salmonids, but they were disproportionately much less abundant than smaller, less piscivorous, conspecifics. The annual predation on kokanee Oncorhynchus nerka (in biomass) by a size-structured unit of 1,000 Northern Pikeminnow having a FL ≥ 300 mm was analogous to 16,000–40,000 age-0 spring Chinook Salmon O. tshawytscha rearing year-round, or 400–1,000 age-1 smolts migrating April–June. The per capita consumption of salmonids by Northern Pikeminnow having a FL ≥ 200 mm was relatively low, due in large part to spatial segregation during the summer and the skewed size distribution of the predator population. Tiger muskellunge fed heavily on Northern Pikeminnow, other nonsalmonids, and minimally on salmonids. In addition to cannibalism within the Northern Pikeminnow population, predation by tiger muskellunge likely contributed to the low recruitment of larger (more piscivorous) Northern Pikeminnow, thereby decreasing the risk of predation to

Survival of cool and warm freshwater fish following chloramine-T exposure

Science.gov (United States)

Gaikowski, M.P.; Larson, W.J.; Gingerich, W.H.

2008-01-01

Chloramine-T is presently available in the USA to control mortalities associated with bacterial gill disease or external columnaris only through an Investigational New Animal Drug Permit authorized by the US Food and Drug Administration (FDA). Its US approval hinges on FDA's acceptance of several key data, including those describing animal safety. Chloramine-T is presently applied in US aquaculture, by permit only, once daily on consecutive or alternate days for 1??h at 10 to 20??mg/L to control mortalities associated with bacterial gill disease or external columnaris. Our objective was to determine the safety of chloramine-T bath exposures at multiples of the proposed maximum treatment concentration (i.e., 0, 20, 60, 100, and 200??mg/L) administered on four consecutive days at 20????C to lake sturgeon Acipenser fulvescens, northern pike Esox lucius, and walleye Sander vitreum, or at 27????C to channel catfish Ictalurus punctatus, and largemouth bass Micropterus salmoides. All fish were tested as five to eight week old fry except for walleye and channel catfish which were tested as both fry and fingerling (fingerlings were at least four weeks older than the fry tested). Walleye and channel catfish were selected to evaluate the effects of life stage (fry vs. fingerling), temperature (walleye - 15, 20, or 25????C; channel catfish - 22, 27, or 32????C), exposure duration (60 vs. 180??min), and water chemistry (walleye only - reconstituted soft water vs. well water). Except for channel catfish fry, survival was significantly reduced only when fish were treated at 100 or 200??mg/L. Channel catfish fry survival was significantly reduced when exposed at 60??mg/L for 180??min at 27????C. Based on our mortality data, chloramine-T administered once daily for 60??min on four consecutive days at concentrations of up to 20??mg/L is not likely to adversely affect survival of cool or warmwater fish cultured in freshwater. Crown Copyright ?? 2007.

DEVELOPMENTAL STABILITY AND CYTOGENETIC HOMEOSTASIS OF FISH FAUNA OF THE SLUCH RIVER IN CURRENT CONDITIONS OF ANTHROPOGENIC STRESS

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O. Bedunkova

2015-03-01

Full Text Available Purpose. To assess the developmental stability and cytogenetic homeostasis of fish populations in the Sluch River in the watercourse areas subjected to anthropogenic stress of different intensities. Methodology. Studies of fish populations in the Sluch River were carried out within Berezne district of Rivne region. The condition of individual fish in the populations were evaluated integrally using morphological (evaluation of the stability of development based on the level of fluctuating asymmetry (FA and cytogenetic (micronucleus (MN test of peripheral blood erythrocytes of fish methods. The methods used allowed identifying the destabilization level of organism development, even in the cases when there is no direct disturbance of population homeostasis. Findings. The found FA levels reflect minor (initial deviations from the normal developmental processes of fish populations in in the studied watercourse areas. Especially significantly this is reflected in a high proportion of individuals with FA in the samples of roach (Rutilus rutilus, bleak (Alburnus alburnus, bream (Abramis brama and perch (Perca fluviatilis. An excess in the frequency of MN erythrocyte cells in roach and pike (Esox lucius blood relatively the level of spontaneous mutagenesis was observed in the cross section №2, which is exposed to sewage waters. The observed manifestation of degenerative processes in fish organisms at this stage can be evaluated as an increased reactivity of sensitive species to the presence of mutagenic agents in the composition of river pollution. The functioning of spawning populations gives reason to believe that the current level of human impact is not critical for the hydroecosystem. Originality. For the first time we obtained data on the stability of development and cytogenetic homeostasis of fish populations in the hydroecosystem of Rivne region in current conditions of anthropogenic stress. Practical value. The obtained results can be used for

Consumption dynamics of the adult piscivorous fish community in Spirit Lake, Iowa

Science.gov (United States)

Liao, H.; Pierce, C.L.; Larscheid, J.G.

2004-01-01

At Spirit Lake, one of Iowa's most important fisheries, walleye Sander vitreus (formerly Stizostedion vitreum) is one of the most popular species with anglers. Despite a century of walleye stocking and management in Spirit Lake, walleye growth rate, size structure, and angler harvest continue to decline. Our purpose was to determine the magnitude and dynamics of walleye population consumption relative to those of other piscivorous species in Spirit Lake, which would allow managers to judge the feasibility of increasing the abundance, growth rate, and size structure of the walleye population. We quantified food consumption by the adult piscivorous fish community in Spirit Lake over a 3-year period. Data on population dynamics, diet, energy density, and water temperature from 1995 to 1997 were used in bioenergetics models to estimate total consumption by walleye, yellow perch Perca flavescens, smallmouth bass Micropterus dolomieu, largemouth bass Micropterus salmoides, black crappie Pomoxis nigromaculatus, and northern pike Esox lucius. Estimated annual consumption by the piscivorous community varied roughly fourfold, ranging from 154,752 kg in 1995 to 662,776 kg in 1997. Walleyes dominated total consumption, accounting for 68, 73, and 90% (1995-1997, respectively) of total food consumption. Walleyes were also the dominant consumers of fish, accounting for 76, 86, and 97% of piscivorous consumption; yellow perch followed, accounting for 16% of piscivorous consumption in 1995 and 12% in 1996. Yellow perch were the predominant fish prey species in all 3 years, accounting for 68, 52, and 36% of the total prey consumed. Natural reproduction is weak, so high walleye densities are maintained by intensive stocking. Walleye stocking drives piscivorous consumption in Spirit Lake, and yearly variation in the cannibalism of stocked walleye fry may be an important determinant of walleye year-class strength and angler success. Reducing walleye stocking intensity, varying stocking

Assessment of the water balance over France using regionalized Turc-Pike formula

Science.gov (United States)

Le Lay, Matthieu; Garçon, Rémy; Gailhard, Joël; Garavaglia, Federico

2016-04-01

With extensive use of hydrological models over a wide range of hydro-climatic contexts, bias in hydro-climatic data may lead to unreliable models and thus hydrological forecasts and projections. This issue is particularly pregnant when considering mountainous areas with great uncertainties on precipitations, or when considering complex unconservative catchments (e.g. karstic systems). The Turc-Pike water balance formula, analogous to the classical Budyko formula, is a simple and efficient mathematical formulation relating long-term average streamflow to long-term average precipitation and potential evaporation. In this study, we propose to apply this framework to assess and eventually adjust the water-balance before calibrating an operational hydrologic model (MORDOR model). Considering a large set of 350 french catchments, the Turc-Pike formula is regionalized based on ecohydrologic criterions to handle various hydro-climatic contexts. This interannual regional model is then applied to assess the water-balance over numerous catchments and various conditions, such as karstic, snow-driven or glaciarized and even anthropized catchments. Results show that it is possible to obtain pretty realistic corrections of meteorological inputs (precipitations, temperature or potential evaporation) or hydrologic surface (or runoff). These corrections can often be confirmed a posteriori by exogenous information. Positive impacts on hydrologic model's calibration are also demonstrated. This methodology is now operational for hydrologic applications at EDF (Electricité de France, French electric utility company), and therefore applied on hundreds of catchments.

Mercury in freshwater fish of northeast North America--a geographic perspective based on fish tissue monitoring databases.

Science.gov (United States)

Kamman, Neil C; Burgess, Neil M; Driscoll, Charles T; Simonin, Howard A; Goodale, Wing; Linehan, Janice; Estabrook, Robert; Hutcheson, Michael; Major, Andrew; Scheuhammer, Anton M; Scruton, David A

2005-03-01

As part of an initiative to assemble and synthesize mercury (Hg) data from environmental matrices across northeastern North America, we analyzed a large dataset comprised of 15,305 records of fish tissue Hg data from 24 studies from New York State to Newfoundland. These data were summarized to provide mean Hg concentrations for 40 fish species and associated families. Detailed analyses were carried out using data for 13 species. Hg in fishes varied by geographic area, waterbody type, and waterbody. The four species with the highest mean Hg concentrations were muskellunge (Esox masquinongy), walleye (Sander vitreus), white perch (Morone americana), and northern pike (Esox luscius). Several species displayed elevated Hg concentrations in reservoirs, relative to lakes and rivers. Normalized deviations from mean tissue levels for yellow perch (Perca flavescens) and brook trout (Salvelinus fontinalis) were mapped, illustrating how Hg concentrations in these species varied across northeastern North America. Certain geographic regions showed generally below or above-average Hg concentrations in fish, while significant heterogeneity was evident across the landscape. The proportion of waterbodies exhibiting exceedances of USEPA's criterion for fish methylmercury ranged from 14% for standard-length brook trout fillets to 42% for standard-length yellow perch fillets. A preliminary correlation analysis showed that fish Hg concentrations were related to waterbody acidity and watershed size.

Long lasting fish contamination with 90Sr of Ignalina NPP water cooling basin

International Nuclear Information System (INIS)

Dusauskiene-Duz, R.; Gudeliene, I.

2003-01-01

Between the nourishment chains in hydro ecosystem the main role have chain water-fish-man, because amount of 90 Sr in fish muscle is limited. 90 Sr accumulation and distribution between the fish organs and tissues was studied. It was found that the main way of 90 Sr enter to the Ignalina NPP water cooling basin fish is adsorption processes which is more active than that of absorption. Established regularities of distribution between the fish organs and tissues, which depends on the fish nourishment type and their species. We determined that 90 Sr activity in fish muscles increase from spring to autumn: in Rutilus rutilus - 8, Abramis brama - 6, Perca fluviatilis - 2,7 and Esox lucius - 22,3 times. We determined that 90 Sr activity in fish muscles is 24 times lower than permissible' standard. It was determined that 90 Sr activity in fish gonads is 2 times higher than that in muscles and depends on fish species. (author)

Radioactive contamination of the significant fish species in fish-ponds and in natural waters with particular respect to the accumulation of Sr-90 Pt. 2

International Nuclear Information System (INIS)

Kantor, D.; Szentjobi, O.

1977-01-01

The radioactive contamination of omnivorous fish species (Cyprinus carpio, Hypophtalmictys nobilis Richardson), of herbivorous fish species (Hypophtalmictys molitrix Valenciennes) and carnivorous fish species (Silurus glanis L., Esox Lucius L.) has been investigated. Orientative data have been obtained by analyzing samples originating from various sites. Though differences appeared between the analyzed samples, no incorporations of outstanding nature have been observed. In accordance with experiences described in literature, the isotope Sr-90 is accumulated in an increased degree in the skeleton of fish living in ponds. This is valid in all cases when the vital processes are regulated artificially by fishery methods. A particularly important factor is that the individual fish living in ponds are 2-3 or at most 4 years of age i.e. from the aspect of their ontogenesis their organism is in a strongly build-up phase. Sr-90 proved to be accumulated in a relatively greater amount in the organisms of herbivorous fish. (P.J.)

Predicted high-water elevations for selected flood events at the Albert Pike Recreation Area, Ouachita National Forest

Science.gov (United States)

D.A. Marion

2012-01-01

The hydraulic characteristics are determined for the June 11, 2010, flood on the Little Missouri River at the Albert Pike Recreation Area in Arkansas. These characteristics are then used to predict the high-water elevations for the 10-, 25-, 50-, and 100-year flood events in the Loop B, C, and D Campgrounds of the recreation area. The peak discharge and related...

Lucius Septimius Petronianus and Tiberius Claudius Proculus Cornelianus: Two protégés of Gnaeus Iulius Verus

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Šajin Željka

2017-01-01

Full Text Available This article discusses the careers of Lucius Septimius Petronianus and Tiberius Claudius Proculus Cornelianus, who successively held the post of procurator of the mining districts situated in the valley of the lower Drina river during the second half of the 2nd century A.D. It aims to point out a connection between both procurators and Gnaeus Iulius Verus, a famous senator and general originating from the Roman colony of Aequum, in Dalmatia and one of Marcus Aurelius’ amici in the early years of the latter’s reign. The presence of the protégés of Gnaeus Iulius Verus in the richest mining region of Illyricum is indicative of two things: the emperor’s willingness to entrust these mines to the protégés of his closest associate at a time when this region was under constant threat from barbarian attacks, and also the possible intention of Gnaeus Iulius Verus to protect his own investment in mining.

Uptake and transport of manganese in primary and secondary olfactory neurones in pike.

Science.gov (United States)

Tjälve, H; Mejàre, C; Borg-Neczak, K

1995-07-01

gamma-spectrometry and autoradiography were used to examine the axoplasmic flow of manganese in the olfactory nerves and to study the uptake of the metal in the brain after application of 54Mn2+ in the olfactory chambers of pikes. The results show that the 54Mn2+ is taken up in the olfactory receptor cells and is transported at a constant rate along the primary olfactory neurones into the brain. The maximal velocity for the transported 54Mn2+ was 2.90 +/- 0.21 mm/hr (mean +/- S.E.) at 10 degrees, which was the temperature used in the experiments. The 54Mn2+ accumulated in the entire olfactory bulbs, although most marked in central and caudal parts. The metal was also seen to migrate into large areas of the telencephalon, apparently mainly via the secondary olfactory axons present in the medial olfactory tract. A transfer along fibres of the medial olfactory tract probably also explains the labelling which was seen in the diencephalon down to the hypothalamus. The results also showed that there is a pathway connecting the two olfactory bulbs of the pike and that this can carry the metal. Our data further showed a marked accumulation of 54Mn2+ in the meningeal epithelium and in the contents of the meningeal sacs surrounding the olfactory bulbs. It appears from our study that manganese has the ability to pass the synaptic junctions between the primary and the secondary olfactory neurones in the olfactory bulbs and to migrate along secondary olfactory pathways into the telencephalon and the diencephalon.(ABSTRACT TRUNCATED AT 250 WORDS)

Two-dimensional simulation of the June 11, 2010, flood of the Little Missouri River at Albert Pike Recreational Area, Ouachita National Forest, Arkansas

Science.gov (United States)

Wagner, Daniel M.

2013-01-01

In the early morning hours of June 11, 2010, substantial flooding occurred at Albert Pike Recreation Area in the Ouachita National Forest of west-central Arkansas, killing 20 campers. The U.S. Forest Service needed information concerning the extent and depth of flood inundation, the water velocity, and flow paths throughout Albert Pike Recreation Area for the flood and for streamflows corresponding to annual exceedence probabilities of 1 and 2 percent. The two-dimensional flow model Fst2DH, part of the Federal Highway Administration’s Finite Element Surface-water Modeling System, and the graphical user interface Surface-water Modeling System (SMS) were used to perform a steady-state simulation of the flood in a 1.5-mile reach of the Little Missouri River at Albert Pike Recreation Area. Peak streamflows of the Little Missouri River and tributary Brier Creek served as inputs to the simulation, which was calibrated to the surveyed elevations of high-water marks left by the flood and then used to predict flooding that would result from streamflows corresponding to annual exceedence probabilities of 1 and 2 percent. The simulated extent of the June 11, 2010, flood matched the observed extent of flooding at Albert Pike Recreation Area. The mean depth of inundation in the camp areas was 8.5 feet in Area D, 7.4 feet in Area C, 3.8 feet in Areas A, B, and the Day Use Area, and 12.5 feet in Lowry’s Camp Albert Pike. The mean water velocity was 7.2 feet per second in Area D, 7.6 feet per second in Area C, 7.2 feet per second in Areas A, B, and the Day Use Area, and 7.6 feet per second in Lowry’s Camp Albert Pike. A sensitivity analysis indicated that varying the streamflow of the Little Missouri River had the greatest effect on simulated water-surface elevation, while varying the streamflow of tributary Brier Creek had the least effect. Simulated water-surface elevations were lower than those modeled by the U.S. Forest Service using the standard-step method, but the

IMPORTANCE OF SHALLOW AREAS OF THE UPPER PART OF THE KANIV RESERVOIR IN THE MAINTENANCE OF ITS ICHTHYOFAUNA

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O. Gurbyk

2014-09-01

Full Text Available Purpose. Determination of the relative number of fish juveniles on biotopes of the upper part of the Kanev reservoir in the aspect of evaluation of these areas in general propagation of ichthyofauna. Methodology. The work is based on data of fish juvenile surveys conducted in the Kaniv reservoir during 2011—2013. Data collection and processing were performed according to generally accepted methods. Fish juveniles were caught using a beach seine made of mill gauze № 7, length 10 m, height 1 m. Relative number of fish juveniles on different sites has been calculated based on the areas of fish nursing biotopes under assumption of the constancy of catchability coefficients. Shannon-Weaver diversity index was used for comparing species diversity of the commercial ichthyofauna of different sites. Findings. The majority of the studied littoral sites of the upper part of the Kaniv reservoir were characterized by sufficiently high indices of biodiversity ― Shannon index values varied within 2,07—3,24 bit./ind. Twenty six species were recorded in the composition of the fish juvenile communities that was 80 % of total number of species in the reservoir. It was found that despite a decrease of the relative number of the juveniles of valuable commercial species compared to previous years, the upper part of the reservoir remains the major site for recruitment of commercial fish stock ― 70 % of bream (Abramis brama, tench (Tinca tinca, pike (Esox lucius, roach (Rutilus rutilus and wels (Vimba vimba of the Kaniv reservoir are reproduced here. Taking into account the especial value of the upper part in formation of the spawning fund of the reservoir, any hydroenhancement works here should be limited exclusively by navigable channel. Originality. For the first time we quantitatively evaluated (in spatial aspect the number of fish fauna recruitment in the Kanev reservoir under current state of spawning areas. Practical value. Results of the work will be

Reproductive biology of the Cisalpine pike (Esox cisalpinus Bianco and Delmastro, 2011 in Trasimeno Lake (Italy.

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Laura Pompei

2015-11-01

Total sample consisted of 292 females ranging in size from 28 to 103 cm (2+ -14+ age classes. Descriptive statistic of GSI, F, FR, δ and Wr is reported in Table 1. Fecundity was positively correlated with TL (r2=0.67, r=0.82, p0.05; covariate mean: TL=61.03 cm. On the contrary, RF varied remarkably from year to year (ANCOVA: F=3.57, p<0.05; covariate mean: TL=61.03 cm, without a clear temporal trend in the regression analysis (r2<0.01; r=-0.02; p=0.74. The great variability of RF values should be justified by the high unpredictability of environmental condition (i.e. water level, water temperature that characterize the Trasimeno Lake (Lorenzoni et al. 2002. The mean diameter of eggs showed a marked decrease from 2010 to 2012, with a slight increase in 2014 (ANCOVA: F=48.56, p<0.01; covariate mean: TL=61.03 cm; however the regression analysis highlights a general decrease over time (r2=0.03; r=-0.17, p<0.01 (Fig. 2A. A similar pattern was revealed from the regression between Wr and years (r2=0.02; r=-0.15, p<0.01 (Fig. 2B. In many fish species, egg size, which correlates with female size or condition, has been found to contribute to egg quality (Kamler, 1992. The reduction of the eggs diameter ultimately results in the quality of the offspring, since the amount and composition of the yolk have a great influence on the development of the larvae (Laine and Rajasilta, 1999. Condition of spawners is known to have significant effects on reproductive potential (Laine and Rajasilta, 1999, but it also influences the viability of eggs (Kjørsvik et al., 1990, thus the decrease in eggs size may be correlated to the worsening of condition during years that seems to affect E. cisalpinus in Trasimeno Lake. The worsening of both condition and quality of the eggs make necessary the continuation of the monitoring study to safeguard the conservation of the population. The preliminary results reported in this research increase the knowledge on the biological characteristic of E. cisalpinus and should assist decision-making in relation to the future management of this endemic species.

Pike River Mine Disaster: Systems-Engineering and Organisational Contributions

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Dirk J. Pons

2016-10-01

Full Text Available The Pike River mine (PRM, an underground coal mine in New Zealand (NZ, exploded in 2010. This paper analyses the causes of the disaster, with a particular focus on the systems engineering and organisational contributions. Poor systems-engineering contributed via poorly designed ventilation, use of power-electronics underground, and placement of the main ventilation fan underground. Management rushed prematurely into production even though the technology development in the mine was incomplete. Investment in non-productive infrastructure was deprioritised resulting in inadequate ventilation, and the lack of a viable second emergency egress. The risk assessments were deficient, incomplete, or not actioned. Warnings and feedback from staff were ignored. Risk arises as a consequence of the complex interactions between the components of the sociotechnical system. Organisations will need to strengthen the integrity of their risk management processes at engineering, management, and board levels. The systems engineering perspective shows the interacting causality between the engineering challenges (ventilation, mining method, electrical power, project deliverables, management priorities, organisational culture, and workers’ behaviour. Use of the barrier method provides a new way to examine the risk-management strategies of the mine. The breakdowns in organisational safety management systems are explicitly identified.

An Assessment of Weight-Length Relationships for Muskellunge,Northern Pike, and Chain Pickerel In Carlander's Handbook of Freshwater Fishery Biology

OpenAIRE

Daviscourt, Joshua; Huertas, Joshua; Courtney, Michael

2011-01-01

Carlander's Handbook of Freshwater Fishery Biology (1969) contains life history data from many species of freshwater fish found in North America. It has been cited over 1200 times and used to produce standard-weight curves for some species. Recent work (Cole-Fletcher et al. 2011) suggests Carlander (1969) contains numerous errors in listed weight-length equations. This paper assesses the weight-length relationships listed in Carlander for muskellunge, northern pike, and chain pickerel by comp...

Der Lucius-Burckhardt-Platz in Kassel. Eine Geschichte über den Kampf um Legitimität und Deutungshoheit bei der Neugestaltung des Campus der Universität Kassel.

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Sieben Textfresser*innen von der Initiative „Lucius-Burckhardt-Platz bleibt!“

2016-11-01

Full Text Available Als Mitglieder der Initiative „Lucius-Burckhardt-Platz bleibt!“ erzählen wir euch hier von unserem Versuch, die Zerstörung und autoritäre Überplanung eines Quartiersplatzes zu verhindern. Es ist die Geschichte unseres Wiederstandes gegen eine Planung, die Teilhabe als Feigenblatt auf der Ebene von institutionellen Gremien und Ausschüssen proklamiert. Gegen eine Planung, die gewachsene soziale und räumliche Strukturen negiert und die Wünsche der Nutzer*innen mit Absicht überhört. Wir werden Hintergründe und Mechanismen dieser politischen Planungspraxis an der Universität Kassel aufzeigen und über unsere Erfolge, unsere Kompromisse und unser Scheitern berichten.

mGluR5 stimulating Homer–PIKE formation initiates icariin induced cardiomyogenesis of mouse embryonic stem cells by activating reactive oxygen species

Energy Technology Data Exchange (ETDEWEB)

Zhou, Limin; Huang, Yujie; Zhang, Yingying [Institute of Pharmacology, Toxicology and Biochemical Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, No. 866, Yu Hang Tang Road, Hangzhou 310058 (China); Zhao, Qingwei [The First Affiliated Hospital, College of Medicine, Zhejiang University, No. 79, Qing Chun Road, Hangzhou 310003 (China); Zheng, Bei; Lou, Yijia [Institute of Pharmacology, Toxicology and Biochemical Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, No. 866, Yu Hang Tang Road, Hangzhou 310058 (China); Zhu, Danyan, E-mail: zdyzxb@zju.edu.cn [Institute of Pharmacology, Toxicology and Biochemical Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, No. 866, Yu Hang Tang Road, Hangzhou 310058 (China)

2013-06-10

Icariin (ICA) has been reported to facilitate cardiac differentiation of mouse embryonic stem (ES) cells; however, the mechanism by which ICA induced cardiomyogenesis has not been fully elucidated yet. Here, an underlying signaling network including metabotropic glutamate receptor 5 (mGluR5), Homer, phosphatidylinositol 3-Kinase Enhancer (PIKE), phosphatidylinositol 3-Kinase (PI3K), reactive oxygen species (ROS) and nuclear factor-kappaB (NF-κB) was investigated in ICA induced cardiomyogenesis. Our results showed that the co-expression of mGluR5 together with α-actinin or Troponin T in embryoid bodies (EBs) treated with ICA was elevated to 10.86% and 9.62%, compared with the case in the control (4.04% and 3.45%, respectively). Exposure of EBs to ICA for 2 h remarkably increased the dimeric form of mGluR5, which was inhibited by small interfering RNA targeting mGluR5 (si-mGluR5). Moreover, the extracellular glutamate concentration in ICA treatment medium was elevated to 28.9±3.5 μM. Furthermore, the activation of mGluR5 by ICA triggered the formation of Homer–PIKE complex and activated PI3K, stimulating ROS generation and NF-κB nuclear translocation. Knockdown of mGluR5 or inhibition of PI3K by LY294002 blocked ICA induced cardiomyogenesis via repressing mGluR5 pathway, reducing ROS and NF-κB activation. These results revealed that the inducible mechanisms of ICA were related to activate mGluR5 pathway. -- Highlights: • ICA increased mGluR5 expression in cardiac differentiation of ES cells. • ICA enhanced the glutamate level and the receptor mGluR5 dimerization, stimulating the formation of Homer–PIKE complex. • Knockdown of mGluR5 or inhibition of PI3K by LY294002 inhibited ICA induced ROS generation and NF-κB nuclear translocation.

Muskie Lunacy: does the lunar cycle influence angler catch of muskellunge (Esox masquinongy)?

Science.gov (United States)

Vinson, Mark R; Angradi, Ted R

2014-01-01

We analyzed angling catch records for 341,959 muskellunge (Esox masquinongy) from North America to test for a cyclic lunar influence on the catch. Using periodic regression, we showed that the number caught was strongly related to the 29-day lunar cycle, and the effect was consistent across most fisheries. More muskellunge were caught around the full and new moon than at other times. At night, more muskellunge were caught around the full moon than the new moon. The predicted maximum relative effect was ≈5% overall. Anglers fishing exclusively on the peak lunar day would, on average, catch 5% more muskellunge than anglers fishing on random days. On some lakes and at night, the maximum relative effect was higher. We obtained angler effort data for Wisconsin, Mille Lacs (MN), and Lake Vermilion (MN). For Lake Vermilion there was a significant effect of the lunar cycle on angler effort. We could therefore not conclude that the lunar effect on catch was due to an effect on fish behavior alone. Several factors affected the amount of variation explained by the lunar cycle. The lunar effect was stronger for larger muskellunge (>102 cm) than for smaller fish, stronger in midsummer than in June or October, and stronger for fish caught at high latitudes (>48°N) than for fish caught further south. There was no difference in the lunar effect between expert and novice muskellunge anglers. We argue that this variation is evidence that the effect of the lunar cycle on catch is mediated by biological factors and is not due solely to angler effort and reflects lunar synchronization in feeding. This effect has been attributed to variation among moon phases in lunar illumination, but our results do not support that hypothesis for angler-caught muskellunge.

Geochemical Characterization of Mine Waste, Mine Drainage, and Stream Sediments at the Pike Hill Copper Mine Superfund Site, Orange County, Vermont

Science.gov (United States)

Piatak, Nadine M.; Seal, Robert R.; Hammarstrom, Jane M.; Kiah, Richard G.; Deacon, Jeffrey R.; Adams, Monique; Anthony, Michael W.; Briggs, Paul H.; Jackson, John C.

2006-01-01

The Pike Hill Copper Mine Superfund Site in the Vermont copper belt consists of the abandoned Smith, Eureka, and Union mines, all of which exploited Besshi-type massive sulfide deposits. The site was listed on the U.S. Environmental Protection Agency (USEPA) National Priorities List in 2004 due to aquatic ecosystem impacts. This study was intended to be a precursor to a formal remedial investigation by the USEPA, and it focused on the characterization of mine waste, mine drainage, and stream sediments. A related study investigated the effects of the mine drainage on downstream surface waters. The potential for mine waste and drainage to have an adverse impact on aquatic ecosystems, on drinking- water supplies, and to human health was assessed on the basis of mineralogy, chemical concentrations, acid generation, and potential for metals to be leached from mine waste and soils. The results were compared to those from analyses of other Vermont copper belt Superfund sites, the Elizabeth Mine and Ely Copper Mine, to evaluate if the waste material at the Pike Hill Copper Mine was sufficiently similar to that of the other mine sites that USEPA can streamline the evaluation of remediation technologies. Mine-waste samples consisted of oxidized and unoxidized sulfidic ore and waste rock, and flotation-mill tailings. These samples contained as much as 16 weight percent sulfides that included chalcopyrite, pyrite, pyrrhotite, and sphalerite. During oxidation, sulfides weather and may release potentially toxic trace elements and may produce acid. In addition, soluble efflorescent sulfate salts were identified at the mines; during rain events, the dissolution of these salts contributes acid and metals to receiving waters. Mine waste contained concentrations of cadmium, copper, and iron that exceeded USEPA Preliminary Remediation Goals. The concentrations of selenium in mine waste were higher than the average composition of eastern United States soils. Most mine waste was

Isolation and characterization of gonadotropin isohormones from the pituitary gland of pike eel (Muraenesox cinereus)

International Nuclear Information System (INIS)

Huang, F.-L.; Huang, C.-J.; Lin, S.-H.; Lo, T.-B.; Papkoff, H.

1981-01-01

Pike eel gonadotropins were isolated from pituitary glands by 40% alcohol-6% ammonium acetate, pH 5.1 extraction and were purified by DEAE-cellulose chromatography and electrophoresis into four electrophoretically homogeneous forms. These four isohormones were biologically identified as gonadotropins by the stimulation of 32 P-uptake in 1-day-old chick testes, by the induction of ovulation in catfish, and by the in vitro production of testosterone from isolated rat Leydig cells and of androgen from carp testes. The amino acid composition of the isohormones were similar to other known piscine gonadotropins (carp and salmon) and were composed of two non-identical subunits with Tyr and Ser as N-terminal amino acid residues. The molecular weights of two subunits were 15000 and 10500, respectively, as estimated by SDS-gel disc electrophoresis. (author)

A reconnaissance spatial and temporal assessment of methane and inorganic constituents in groundwater in bedrock aquifers, Pike County, Pennsylvania, 2012-13

Science.gov (United States)

Senior, Lisa A.

2014-01-01

Pike County in northeastern Pennsylvania is underlain by the Devonian-age Marcellus Shale and other shales, formations that have potential for natural gas development. During 2012–13, the U.S. Geological Survey in cooperation with the Pike County Conservation District conducted a reconnaissance study to assess baseline shallow groundwater quality in bedrock aquifers prior to possible shale-gas development in the county. For the spatial component of the assessment, 20 wells were sampled in summer 2012 to provide data on the occurrence of methane and other aspects of existing groundwater quality throughout the county, including concentrations of inorganic constituents commonly present at low levels in shallow, fresh groundwater but elevated in brines. For the temporal component of the assessment, 4 of the 20 wells sampled in summer 2012 were sampled monthly from July 2012 through June 2013 to provide data on seasonal variability in groundwater quality. All water samples were analyzed for major ions, nutrients, selected inorganic trace constituents (including metals and other elements), stable isotopes of water, radon-222, gross alpha- and gross beta-particle activity, dissolved gases (methane, ethane, and ethene), and, if possible, isotopic composition of methane. Additional analyses for boron and strontium isotopes, age-dating of water, and radium-226 were done on water samples collected from six wells in June 2013.

Polybrominated diphenyl ethers (PBDEs) and their methoxylated derivatives in pike from Swedish waters with emphasis on temporal trends, 1967-2000

International Nuclear Information System (INIS)

Kierkegaard, A.; Bignert, A.; Sellstroem, U.; Olsson, M.; Asplund, L.; Jansson, B.; Wit, C.A. de

2004-01-01

Temporal trends of five tetra- to hexabromodiphenyl ethers [BDE47, BDE99, BDE100, BDE153 and BDE154) and two methoxy-tetraBDEs [6-methoxy-2,2',4,4'- tetraBDE (6-MeO-BDE47) and 2'-methoxy-2,3',4,5'- tetraBDE (2'-MeO-BDE68)] in pike from Lake Bolmen for the years 1967-2000, are presented. All BDE congeners show increasing trends up to the mid-1980s (Σ5PBDE from 60 to 1600 pg/g wet weight in 1989, i.e. a more than 25-fold increase), and then decrease or level off. The decreasing trends of PBDEs after the 1980s were considerably slower in the present study than was found in a study of an environmental matrix from the Baltic Proper covering the same time period. This difference suggests local sources near Lake Bolmen. The MeO-BDEs show initially decreasing concentrations, which for 6-MeO-BDE47 continues until the early 1990s. The concentrations of 6-MeO-BDE47 in herring from five locations along the Swedish coast increased from south to north in the Baltic Sea. No correlation between the concentrations of the BDE congeners and the MeO-BDEs was observed, indicating sources other than PBDEs for these compounds. The presence of MeO-BDEs in fish from lakes with different characteristics suggests a natural production not favoured by eutrophication, or dependent on sampling season and geographical location. - PBDEs and MeO-BDEs show different temporal trends in pike from a Swedish lake suggesting different sources

Polybrominated diphenyl ethers (PBDEs) and their methoxylated derivatives in pike from Swedish waters with emphasis on temporal trends, 1967-2000

Energy Technology Data Exchange (ETDEWEB)

Kierkegaard, A.; Bignert, A.; Sellstroem, U.; Olsson, M.; Asplund, L.; Jansson, B.; Wit, C.A. de

2004-07-01

Temporal trends of five tetra- to hexabromodiphenyl ethers [BDE47, BDE99, BDE100, BDE153 and BDE154) and two methoxy-tetraBDEs [6-methoxy-2,2',4,4'- tetraBDE (6-MeO-BDE47) and 2'-methoxy-2,3',4,5'- tetraBDE (2'-MeO-BDE68)] in pike from Lake Bolmen for the years 1967-2000, are presented. All BDE congeners show increasing trends up to the mid-1980s ({sigma}5PBDE from 60 to 1600 pg/g wet weight in 1989, i.e. a more than 25-fold increase), and then decrease or level off. The decreasing trends of PBDEs after the 1980s were considerably slower in the present study than was found in a study of an environmental matrix from the Baltic Proper covering the same time period. This difference suggests local sources near Lake Bolmen. The MeO-BDEs show initially decreasing concentrations, which for 6-MeO-BDE47 continues until the early 1990s. The concentrations of 6-MeO-BDE47 in herring from five locations along the Swedish coast increased from south to north in the Baltic Sea. No correlation between the concentrations of the BDE congeners and the MeO-BDEs was observed, indicating sources other than PBDEs for these compounds. The presence of MeO-BDEs in fish from lakes with different characteristics suggests a natural production not favoured by eutrophication, or dependent on sampling season and geographical location. - PBDEs and MeO-BDEs show different temporal trends in pike from a Swedish lake suggesting different sources.

Radiocesium cumulation in selected fishes in the Czechoslovak stretch of the Danube river

International Nuclear Information System (INIS)

Cipakova, A.; Mitro, A.; Smidt, I.; Wirdzek, S.

1987-01-01

The contents were measured of 137 Cs and 134 Cs in the bodies, scales, viscera and gonades of different species of fish caught in the river Danube in September 1986. The highest specific activity of the two radionuclides in the edible parts of the fishes was found in Esox lucius, namely 71.9 Bq.kg -1 and 31.8 Bq.kg -1 , respectively. The lowest values were measured in Chondrostoma nasus, i.e., 24.5 and 11.2 Bq.kg -1 , and Barbus barbus 18.8 and 7.9 Bq.kg -1 . Also calculated were transfer coefficients. Presented and compared are the values of specific activity of the two radionuclides in the individual organs of the caught fish and the dose commitment for the individual body organs of persons consuming the fish caught in the Danube river in the years 1978 and 1986. As compared with 1978, the 137 Cs specific activity in the body organs of the fishes increased by two orders of magnitude, dose commitment of human organs from consumption of these fishes also increased. However, the said increased values are still 5 order of magnitude lower than is the annual limit set by Czechoslovak standards. (J.B.). 5 tabs., 7 refs

Water-quality models to assess algal community dynamics, water quality, and fish habitat suitability for two agricultural land-use dominated lakes in Minnesota, 2014

Science.gov (United States)

Smith, Erik A.; Kiesling, Richard L.; Ziegeweid, Jeffrey R.

2017-07-20

proportion of good-growth habitat and a sustained period of optimal growth habitat in the summer, without any periods of lethal oxythermal habitat. For Madison and Pearl Lakes, examples of important cool-water fish, particularly game fish, include northern pike (Esox lucius), walleye (Sander vitreus), and black crappie (Pomoxis nigromaculatus); examples of important warm-water fish include bluegill (Lepomis macrochirus), largemouth bass (Micropterus salmoides), and smallmouth bass (Micropterus dolomieu). Sensitivity analyses were completed to understand lake response effects through the use of controlled departures on certain calibrated model parameters and input nutrient loads. These sensitivity analyses also operated as land-use change scenarios because alterations in agricultural practices, for example, could potentially increase or decrease nutrient loads.

Higher-order organisation of extremely amplified, potentially functional and massively methylated 5S rDNA in European pikes (Esox sp.)

Czech Academy of Sciences Publication Activity Database

Symonová, R.; Ocalewicz, K.; Kirtiklis, L.; Delmastro, G. B.; Pelikánová, Šárka; Garcia, S.; Kovařík, Aleš

2017-01-01

Roč. 18, č. 391 (2017), č. článku 391. ISSN 1471-2164 R&D Projects: GA ČR GA14-02940S; GA ČR GBP501/12/G090 Institutional support: RVO:67985904 ; RVO:68081707 Keywords : rDNA * evolution * chromosome Subject RIV: EB - Genetics ; Molecular Biology OBOR OECD: Genetics and heredity (medical genetics to be 3) Impact factor: 3.729, year: 2016

The influence of environmental abiotic factors on the qualitative and quantitative structure of ichthyofauna from predeltaic Danube area

Directory of Open Access Journals (Sweden)

Petronela Georgiana Calin Sandu

2013-05-01

Full Text Available The aim of the paper  is to analyse the influence of environmental factors on the capture and fish communities structure from Danube, between Siret River and Prut River mouth. Fish were collected from April to December 2012 in four fishing areas. During the year, 4910 kg, respectively 7121 fish of 31 species were collected. Cyprinidae, the dominant family, 54.84% in term of number of species, was represented by 17 species (Cyprinus carpio, Carassius gibelio, Barbus barbus, Abramis brama, Abramis sapa, Blicca bjoerkna, Leuciscus idus, Vimba vimba, Aspius aspius, Pelecus cultratus, Chondrostoma nasus, Ctenopharingodon idella, Hypophthalmichthys molitrix, Hypophthalmichthys nobilis, Scardinius erythrophthalmus, Rutilus rutilus, Alburnus alburnus. Other families had the following structure: Percidae (16.13% with 5 species (Sander lucioperca, Zingel zingel, Zingel streber, Perca fluviatilis, Gymnocephalus schraetzer, Acipenseridae (12.90% with 4 species (Huso huso, Acipenser stellatus, Acipenser ruthenus, Acipenser gueldenstaedtii, Clupeidae (6.45% with two species (Alosa immaculata, Alosa tanaica, Siluridae (3.23% with one species (Silurus glanis, Esocidae (3.23% with one species (Esox lucius  and Salmonidae (3.23% with one species also (Salmo labrax. The highest capture was 2977.93 kg (60.65%, during the spring season (April-May, followed by autumn season (September–November, with 992.39 kg (20.21%. The water level and water flow showed high correlation with both number and total catch, respectively.

Supplementation of lactobacilli improves growth, regulates microbiota composition and suppresses skeletal anomalies in juvenile pike-perch (Sander lucioperca) reared in recirculating aquaculture system (RAS): A pilot study.

Science.gov (United States)

Ljubobratovic, Uros; Kosanovic, Dejana; Vukotic, Goran; Molnar, Zsuzsanna; Stanisavljevic, Nemanja; Ristovic, Tijana; Peter, Geza; Lukic, Jovanka; Jeney, Galina

2017-12-01

This research aimed to test the effects of lactobacilli, applied to cultured pike-perch, either through hydrolyzed OTOHIME fish diet, or through Artemia nauplii, on fish growth, microbiota balance and skeletal development. On the 12th Day Post Hatching (DPH) fish were divided into following treatment groups: two groups received the combination of OTOHIME and nauplii enriched either with Lactobacillus paracasei BGHN14+Lactobacillus rhamnosus BGT10 or with Lactobacillus reuteri BGGO6-55+Lactobacillus salivarius BGHO1, and one group received OTOHIME hydrolyzed by BGHN14+BGT10 and non-enriched nauplii. Control group received non-enriched nauplii and non-hydrolyzed OTOHIME. The treatment lasted 14days and fish were sacrificed on the 26th DPH for the assessment of digestive enzyme activity and microbiota composition. Individual total lengths and individual body weights were recorded at the end of the treatments, on the 26th DPH, and also on the 45th DPH, in parallel with the evaluation of skeletal deformities and fish survival. Our results indicated positive effect of Artemia enriched with BGGO6-55+BGHO1 on fish growth, skeletal development and trypsin to chymotrypsin activity ratio (T/C), as an indicator of protein digestibility. Hydrolysis of OTOHIME was also associated with better skeletal development, higher T/C values and lower levels of Aeromonas and Mycobacterium spp., which are important fish pathogens. Though additional testing in larger cohort studies is needed, these observations are promising in terms of usage of probiotics for improved environmentally friendly production of pike-perch in Recirculating Aquaculture System (RAS). Copyright © 2017 Elsevier Ltd. All rights reserved.

Performance of Hitchens-Pike-Todd-Hewitt medium for group B streptococcus screening in pregnant women.

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Simone Cristina Castanho Sabaini de Melo

Full Text Available Group B streptococcus (GBS, which commonly colonizes the female genital tract and rectum, can cause infections in newborns with varying severity, possibly leading to death. The aim of the present study was to evaluate Hitchens-Pike-Todd-Hewitt (HPTH medium performance for GBS screening in pregnant women. A descriptive analytical cross-sectional study was performed with 556 pregnant women, of which 496 were at 35-37 weeks of gestation and 60 were at ≥ 38 weeks of gestation. The study was conducted from September 2011 to March 2014 in northern Paraná, Brazil. Vaginal and anorectal clinical specimens from each pregnant woman were plated on sheep blood agar (SBA and seeded on HPTH medium and Todd-Hewitt enrichment broth. Of the 496 pregnant women at 35-37 weeks of gestation, 141 (28.4% were positive for GBS, based on the combination of the three culture media and clinical specimens. The GBS colonization rates that were detected by each medium were 22.2% for HPTH medium, 21.2% for SBA, and 13.1% for Todd-Hewitt enrichment broth. Of the 60 pregnant women at ≥ 38 weeks of gestation, seven (11.7% were positive for GBS. These results demonstrate that HPTH medium and SBA were more sensitive than Todd-Hewitt enrichment broth for GBS screening in pregnant women and good GBS recovery in culture, indicating that the two media should be used together for vaginal and anorectal specimens.

New Zealand mining legislation and recommendations for change following the Pike River disaster

International Nuclear Information System (INIS)

King, Tony

2012-01-01

There is good evidence that existing health and safety legislation in New Zealand (NZ) has produced a marked and sustained improvement in occupational health and in high-frequency low-consequence accidents.The same cannot be said for high-consequence low-frequency events. Changes to the regulatory framework should focus on these high- consequence low-frequency events although not to the detriment of low- consequence event safety. The (NZ) underground coal mining industry is characterised by a very small number of operating mines that are distinctly different from each other. This is also true of proposed mines, where there is even more variety in the type of firms proposing to operate these mines. The risks that each individual mine faces are varied and risks that predominate in one operation (for example methane or spontaneous combustion) may be entirely absent at another nearby operation. Research strongly suggests that the best regulatory approach for underground coal mines in NZ is process-based standards, supported by performance standards to identify issues and set appropriate performance outcomes. A well-resourced locally based inspectorate comprising knowledgeable and experienced inspectors with NZ mining experience is required, supported by access to overseas expertise. The Health and Safety in Employment Act 1992 should remain the governing legislation for NZ coal mining. The existing mining-specific regulations should be replaced for underground coal mining with a new set of regulations. These new regulations should draw heavily on the Queensland regulations with the best aspects of New South Wales and elsewhere also included. The internationalisation of management, advisors and workers supports an approach based on good overseas practice, rather than a highly- individualised, uniquely NZ solution. Learnings and recommendations from the Pike River Royal Commission should be incorporated into performance standards and outcomes in the new regulations.

Impact of wildfire on levels of mercury in forested watershed systems - Voyageurs National Park, Minnesota

Science.gov (United States)

Woodruff, Laurel G.; Sandheinrich, Mark B.; Brigham, Mark E.; Cannon, William F.

2009-01-01

Atmospheric deposition of mercury to remote lakes in mid-continental and eastern North America has increased approximately threefold since the mid-1800s (Swain and others, 1992; Fitzgerald and others, 1998; Engstrom and others, 2007). As a result, concerns for human and wildlife health related to mercury contamination have become widespread. Despite an apparent recent decline in atmospheric deposition of mercury in many areas of the Upper Midwest (Engstrom and Swain, 1997; Engstrom and others, 2007), lakes in which fish contain levels of mercury deemed unacceptable for human consumption and possibly unacceptable for fish-consuming wildlife are being detected with increasing frequency. In northern Minnesota, Voyageurs National Park (VNP) (fig. 1) protects a series of southern boreal lakes and wetlands situated on bedrock of the Precambrian Canadian Shield. Mercury contamination has become a significant resource issue within VNP as high concentrations of mercury in loons, bald eagle eaglets, grebes, northern pike, and other species of wildlife and fish have been found. The two most mercury-contaminated lakes in Minnesota, measured as methylmercury in northern pike (Esox lucius), are in VNP. Recent multidisciplinary U.S. Geological Survey (USGS) research demonstrated that the bulk of the mercury in lake waters, soils, and fish in VNP results from atmospheric deposition (Wiener and others, 2006). The study by Wiener and others (2006) showed that the spatial distribution of mercury in watershed soils, lake waters, and age-1 yellow perch (Perca flavescens) within the Park was highly variable. The majority of factors correlated for this earlier study suggested that mercury concentrations in lake waters and age-1 yellow perch reflected the influence of ecosystem processes that affected within-lake microbial production and abundance of methylmercury (Wiener and others, 2006), while the distribution of mercury in watershed soils seemed to be partially dependent on forest

Lucius Iulius Optatus

DEFF Research Database (Denmark)

Bargfeldt, Niels

2015-01-01

of intimacy between the deceased and the bereaved that the monuments themselves are an expression of, which is an inherent aspect of funerary culture in general. This article examines the grave marker of a frontier doctor that seemingly breaks the tradition of idealising the deceased and instead reveals...

Polybrominated diphenyl ethers (PBDEs) and their methoxylated derivatives in pike from Swedish waters with emphasis on temporal trends, 1967-2000.

Science.gov (United States)

Kierkegaard, A; Bignert, A; Sellström, U; Olsson, M; Asplund, L; Jansson, B; De Wit, C A

2004-07-01

Temporal trends of five tetra- to hexabromodiphenyl ethers [BDE47, BDE99, BDE100, BDE153 and BDE154) and two methoxy-tetraBDEs [6-methoxy-2,2',4,4'- tetraBDE (6-MeO-BDE47) and 2'-methoxy-2,3',4,5'- tetraBDE (2'-MeO-BDE68)] in pike from Lake Bolmen for the years 1967-2000, are presented. All BDE congeners show increasing trends up to the mid-1980s (Sigma5PBDE from 60 to 1600 pg/g wet weight in 1989, i.e. a more than 25-fold increase), and then decrease or level off. The decreasing trends of PBDEs after the 1980s were considerably slower in the present study than was found in a study of an environmental matrix from the Baltic Proper covering the same time period. This difference suggests local sources near Lake Bolmen. The MeO-BDEs show initially decreasing concentrations, which for 6-MeO-BDE47 continues until the early 1990s. The concentrations of 6-MeO-BDE47 in herring from five locations along the Swedish coast increased from south to north in the Baltic Sea. No correlation between the concentrations of the BDE congeners and the MeO-BDEs was observed, indicating sources other than PBDEs for these compounds. The presence of MeO-BDEs in fish from lakes with different characteristics suggests a natural production not favoured by eutrophication, or dependent on sampling season and geographical location.

Effets de l'exposition à un insecticide carbamate, le carbofuran, sur les performances de jeunes stades de brochet (Esox lucius L., 1758 : résultats préliminaires

Directory of Open Access Journals (Sweden)

AMBLARD G.

1998-07-01

Full Text Available Des lots de jeunes brochets au stade embryon libre, stabulés dans des béchers en verre, ont été exposés en conditions statiques à des solutions (0-250 µg.L-1 de carbofuran, un insecticide carbamate inhibiteur de l'activité de l'acétylcholinestérase (AchE. A partir de 10 µg.L-1, une inhibition significative de l'activité globale de l'AchE des embryons libres a été constatée. A partir de 50 µg.L-1, une diminution significative de la hauteur moyenne de fixation des embryons libres sur les parois des béchers a été observée. L'exposition au carbofuran n'a pas eu d'effet significatif sur le nombre de proies zooplanctoniques ingérées par les jeunes brochets parvenus au début de la phase larvaire ; une diminution de ce paramètre en fonction de concentrations croissantes de carbofuran a cependant été enregistrée. A 250 µg.L-1 , la résorption de la vésicule vitelline ne s'effectuant plus que très partiellement, les embryons libres exposés ne se sont pas transformés en larves. Cette étude montre que l'exposition à des concentrations sublétales de carbofuran est susceptible d'affecter le développement ontogénétique et les performances de jeunes stades de brochet. Un approfondissement de ces travaux est envisagé dans différentes directions.

76 FR 369 - National Center for Research Resources; Notice of Closed Meetings

Science.gov (United States)

2011-01-04

... applications. Place: Hilton Washington/Rockville, 1750 Rockville Pike, Rockville, MD 20852. Contact Person... grant applications. Place: Hilton Washington/Rockville, 1750 Rockville Pike, Rockville, MD 20852... evaluate grant applications. Place: Hilton Rockville, 1750 Rockville Pike, Plaza I, Rockville, MD 20852...

The Feeding Behaviour of Fish from the Upper Lake Baikal Watershed of the Eroo River in Mongolia

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Sudeep Chandra

2005-06-01

Full Text Available The upper Selenge watershed in Mongolia is home to some of the world’s unique fish species. In this study we determined the feeding behaviour of selected fish species collected from the main stream of the Eroo River and two of its upstream tributaries, the Sharlan and Bar Chuluut rivers. Using stable isotope (carbon and nitrogen measurements combined with qualitative and literature information, we determined that taimen ( Hucho taimen and pike ( Esox luceus were the top predators in the Eroo River. They received a substantial amount of their energy from other fish species as well as terrestrial derived sources. Percent presence of biota in lenok ( Brachymystax lenok stomachs demonstrated they eat zoobenthos, invertebrates, fish, and terrestrial rodents. Siberian dace ( Leuciscus baicalensis , a small forage fish collected from the Sharlan and Bar Chuluut rivers demonstrate these fish eat periphyton, zoobenthos and terrestrial invertebrates. In the Bar Chuluut tributary, lenok eat a combination of foods including zoobenthos and other fish species, while arctic grayling ( Thymallus arcticus fed primarily on zoobenthos. Percent frequency analysis showed the two game fish species collected from the Bar Chuluut tributary fed primarily on zoobenthos (85 % for lenok and 80 % for grayling, with 28 families and 10 orders represented in their stomachs. Interviews with families suggested local people fish for a variety of species and that there has been a decline in the catch of taimen and sturgeon ( Acipenser baeri baicalensis over time. Since fishing was poor below highly disturbed areas (e.g. mine sites, local people fished above mine locations or in areas least impacted by these anthropogenic impacts.

Identification of Cryptosporidium Species in Fish from Lake Geneva (Lac Léman) in France.

Science.gov (United States)

Certad, Gabriela; Dupouy-Camet, Jean; Gantois, Nausicaa; Hammouma-Ghelboun, Ourida; Pottier, Muriel; Guyot, Karine; Benamrouz, Sadia; Osman, Marwan; Delaire, Baptiste; Creusy, Colette; Viscogliosi, Eric; Dei-Cas, Eduardo; Aliouat-Denis, Cecile Marie; Follet, Jérôme

2015-01-01

Cryptosporidium, a protozoan parasite that can cause severe diarrhea in a wide range of vertebrates including humans, is increasingly recognized as a parasite of a diverse range of wildlife species. However, little data are available regarding the identification of Cryptosporidium species and genotypes in wild aquatic environments, and more particularly in edible freshwater fish. To evaluate the prevalence of Cryptosporidiumspp. in fish from Lake Geneva (Lac Léman) in France, 41 entire fish and 100 fillets (cuts of fish flesh) were collected from fishery suppliers around the lake. Nested PCR using degenerate primers followed by sequence analysis was used. Five fish species were identified as potential hosts of Cryptosporidium: Salvelinus alpinus, Esox lucius, Coregonus lavaretus, Perca fluviatilis, and Rutilus rutilus. The presence of Cryptosporidium spp. was found in 15 out of 41 fish (37%), distributed as follows: 13 (87%) C. parvum, 1 (7%) C. molnari, and 1 (7%) mixed infection (C. parvum and C. molnari). C. molnari was identified in the stomach, while C. parvum was found in the stomach and intestine. C. molnari was also detected in 1 out of 100 analyzed fillets. In order to identify Cryptosporidium subtypes, sequencing of the highly polymorphic 60-kDa glycoprotein (gp60) was performed. Among the C. parvum positive samples, three gp60 subtypes were identified: IIaA15G2R1, IIaA16G2R1, and IIaA17G2R1. Histological examination confirmed the presence of potential developmental stages of C. parvum within digestive epithelial cells. These observations suggest that C. parvum is infecting fish, rather than being passively carried. Since C. parvum is a zoonotic species, fish potentially contaminated by the same subtypes found in terrestrial mammals would be an additional source of infection for humans and animals, and may also contribute to the contamination of the environment with this parasite. Moreover, the risk of human transmission is strengthened by the

Identification of Cryptosporidium Species in Fish from Lake Geneva (Lac Léman in France.

Directory of Open Access Journals (Sweden)

Gabriela Certad

Full Text Available Cryptosporidium, a protozoan parasite that can cause severe diarrhea in a wide range of vertebrates including humans, is increasingly recognized as a parasite of a diverse range of wildlife species. However, little data are available regarding the identification of Cryptosporidium species and genotypes in wild aquatic environments, and more particularly in edible freshwater fish. To evaluate the prevalence of Cryptosporidiumspp. in fish from Lake Geneva (Lac Léman in France, 41 entire fish and 100 fillets (cuts of fish flesh were collected from fishery suppliers around the lake. Nested PCR using degenerate primers followed by sequence analysis was used. Five fish species were identified as potential hosts of Cryptosporidium: Salvelinus alpinus, Esox lucius, Coregonus lavaretus, Perca fluviatilis, and Rutilus rutilus. The presence of Cryptosporidium spp. was found in 15 out of 41 fish (37%, distributed as follows: 13 (87% C. parvum, 1 (7% C. molnari, and 1 (7% mixed infection (C. parvum and C. molnari. C. molnari was identified in the stomach, while C. parvum was found in the stomach and intestine. C. molnari was also detected in 1 out of 100 analyzed fillets. In order to identify Cryptosporidium subtypes, sequencing of the highly polymorphic 60-kDa glycoprotein (gp60 was performed. Among the C. parvum positive samples, three gp60 subtypes were identified: IIaA15G2R1, IIaA16G2R1, and IIaA17G2R1. Histological examination confirmed the presence of potential developmental stages of C. parvum within digestive epithelial cells. These observations suggest that C. parvum is infecting fish, rather than being passively carried. Since C. parvum is a zoonotic species, fish potentially contaminated by the same subtypes found in terrestrial mammals would be an additional source of infection for humans and animals, and may also contribute to the contamination of the environment with this parasite. Moreover, the risk of human transmission is strengthened by

Water quality, hydrology, and the effects of changes in phosphorus loading to Pike Lake, Washington County, Wisconsin, with special emphasis on inlet-to-outlet short-circuiting

Science.gov (United States)

Rose, William J.; Robertson, Dale M.; Mergener, Elizabeth A.

2004-01-01

Pike Lake is a 459-acre, mesotrophic to eutrophic dimictic lake in southeastern Wisconsin. Because of concern over degrading water quality in the lake associated with further development in its watershed, a study was conducted by the U.S. Geological Survey from 1998 to 2000 to describe the water quality and hydrology of the lake, quantify sources of phosphorus including the effects of short-circuiting of inflows, and determine how changes in phosphorus loading should affect the water quality of the lake. Measuring all significant water and phosphorus sources and estimating lesser sources was the method used to construct detailed water and phosphorus budgets. The Rubicon River, ungaged near-lake surface inflow, precipitation, and ground water provide 55, 20, 17, and 7 percent of the total inflow, respectively. Water leaves the lake through the Rubicon River outlet (87 percent) or by evaporation (13 percent). Total input of phosphorus to the lake was about 3,500 pounds in 1999 and 2,400 pounds in 2000. About 80 percent of the phosphorus was from the Rubicon River, about half of which came from the watershed and half from a waste-water treatment plant in Slinger, Wisconsin. Inlet-to-outlet short-circuiting of phosphorus is facilitated by a meandering segment of the Rubicon River channel through a marsh at the north end of the lake. It is estimated that 77 percent of phosphorus from the Rubicon River in monitoring year 1999 and 65 percent in monitoring year 2000 was short-circuited to the outlet without entering the main body of the lake.

78 FR 3473 - Advisory Committee on Reactor Safeguards; Notice of Meeting

Science.gov (United States)

2013-01-16

... Pike, Rockville, Maryland. Thursday, February 7, 2013, Conference Room T2-B1, 11545 Rockville Pike... Evaluation Report Associated with the License Renewal Application for the Limerick Generating Station, Units... of the NRC staff and Exelon Corporation regarding the final safety evaluation report associated with...

78 FR 23572 - National Institute of Allergy and Infectious Diseases; Notice of Closed Meeting

Science.gov (United States)

2013-04-19

... applications. Place: Hilton Washington/Rockville, 1750 Rockville Pike, Rockville, MD 20852. Time: May 29, 2013, 8:00 a.m. to 6:00 p.m. Agenda: To review and evaluate grant applications. Place: Hilton Washington... review and evaluate grant applications. Place: Hilton Washington/Rockville, 1750 Rockville Pike...

75 FR 10295 - National Cancer Institute; Notice of Closed Meetings

Science.gov (United States)

2010-03-05

...; Notice of Closed Meetings Pursuant to section 10(d) of the Federal Advisory Committee Act, as amended (5.... Place: Legacy Hotel and Meeting Center, 1775 Rockville Pike, Rockville, MD 20852. Contact Person: Gerald... evaluate contract proposals. Place: Legacy Hotel and Meeting Center, 1775 Rockville Pike, Rockville, MD...

78 FR 18375 - Advisory Committee on Reactor Safeguards; Notice of Meeting

Science.gov (United States)

2013-03-26

... Pike, Rockville, Maryland. Thursday, April 11, 2013, Conference Room T2-B1, 11545 Rockville Pike..., ``Westinghouse BWR ECCS Evaluation Model: Supplement 5--Application to the ABWR,'' Revision 0 (Open/Closed)--The...-17116-P, ``Westinghouse BWR Emergency Core Coolant System (ECCS) Evaluation Model: Supplement 5,'' and...

77 FR 58420 - Advisory Committee On Reactor Safeguards; Notice of Meeting

Science.gov (United States)

2012-09-20

... Pike, Rockville, Maryland. Thursday, October 4, 2012, Conference Room T2-B1, 11545 Rockville Pike....: Safety Evaluation Report (SER) Associated with WCAP-16793-NP, Revision 2, ``Evaluation of Long-Term..., ``Evaluation of JNES Equipment Fragility Tests for Use in Seismic Probabilistic Risk Assessments for U.S...

New species of Braggia (Hemiptera: Aphididae) on buckwheat in western North America

Science.gov (United States)

K. S. Pike; G. Graf; R. G. Foottit; H. E. L. Maw; P. Stary; R. Hammon; D. G. Miller

2009-01-01

Species of Braggia Gillette and Palmer (Hemiptera: Aphididae: Aphidinae: Aphidini) feed on various buckwheat, Eriogonum Michx. (Polygonaceae), species in western North America. Two new species, Braggia columbiana Pike n. sp. from Washington and Oregon and Braggia longicauda Pike n. sp. from Washington, Oregon, and northern California, are proposed. Descriptions,...

75 FR 13136 - National Library of Medicine; Notice of Closed Meeting

Science.gov (United States)

2010-03-18

... DEPARTMENT OF HEALTH AND HUMAN SERVICES National Institutes of Health National Library of Medicine...: National Library of Medicine, Building 38, 2nd Floor, Board Room, 8600 Rockville Pike, Bethesda, MD 20892...: National Library of Medicine, Building 38, 2nd Floor, Board Room, 8600 Rockville Pike, Bethesda, MD 20892...

78 FR 70078 - Advisory Committee on Reactor Safeguards; Notice of Meeting

Science.gov (United States)

2013-11-22

... Pike, Rockville, Maryland. Wednesday, December 4, 2013, Conference Room T2-B1, 11545 Rockville Pike....: Selected Chapters of the Safety Evaluation Report (SER) With Open Items Associated With the Calvert Cliffs...)(4).] 10:45 a.m.-12:45 p.m.: Topical Report and Selected Chapters of the Safety Evaluation Reports...

77 FR 51580 - Advisory Committee on Reactor Safeguards; Notice of Meeting

Science.gov (United States)

2012-08-24

... Pike, Rockville, Maryland. Thursday, September 6, 2012, Conference Room T2-B1, 11545 Rockville Pike... p.m.-3:15 p.m.: Selected Chapters of the Safety Evaluation Reports (SERs) with Open Items Associated... and Peach Bottom,'' and (2) NUREG/CR-7040, ``Evaluation of JNES Equipment Fragility Tests for Use in...

Impacts of species introductions on the health of fish communities receiving chronic radionuclide inputs

International Nuclear Information System (INIS)

Yankovich, T.L.; Casselman, J.M.; Cornett, R.J.J.

2004-01-01

There is widespread interest in gaining further understanding of the relative influences of multiple stressors on aquatic ecosystem structure and function. To address this, work has been done to evaluate the effects of the introduction of an efficient predator (northern pike) on a fish community in a small lake (Perch Lake, Chalk River, Ontario) receiving chronic inputs of radionuclides over a 50-year period. In general, large changes in fish community structure, with corresponding changes in fish health, occurred following the pike introduction. For example, several forage fish species were extirpated from the lake and densities of the past top predator, yellow perch, became greatly reduced, likely due to predation by northern pike and/or other species in the lake. The reduced perch numbers appeared to alleviate an ecological bottleneck, which resulted in significant increases in brown bullhead densities to levels that were much higher than observed in other water bodies under typical conditions. Corresponding changes in the health of the Perch Lake fish community could also be detected, and included decreased fish diversity, shifts in fish community size structure to smaller body sizes, significant reductions in fish condition factors, reduced hepato-somatic indices, depletion of fish internal fat reserves, hardening of the gastrointestinal tract, resorption of gonadal material, degradation of muscle tissue, emaciation and ultimately, mortality of northern pike and brown bullheads. Evaluation of data indicated that female fishes responded more quickly than did males in terms of condition loss, likely due to their higher energetic requirements. In addition, although pike and bullheads were detrimentally affected by the pike introduction, health of forage fish species, such as pumpkinseeds, did not appear to be greatly influenced. No clear relationships existed between fish community health and exposure to radionuclides in the lake. (author)

Metropolitan Spokane Region Water Resources Study. Appendix E. Environment and Recreation

Science.gov (United States)

1976-01-01

at Porcupine Bay, maintains a small but productive fishery for walleye pike and large mouth bass. The principal fishery is for walleye pike which takes...elevations. The whitetail deer of the Spokane area are part of the Coeur d’Alene herd . They favor the lower elevations and adapt very well to the river

Oyster Shell Dredging in Gulf of Mexico Waters, St. Mary and Terrebonne Parishes, Louisiana. Final Environmental Impact Statement and Appendixes

Science.gov (United States)

1994-04-01

sabinae Sabine shiner x Notropis texanus weed shiner x Notropis volucellus mimic shiner X Ogeocephalus radiatus polka-dot bat fish x Oligoplites saurus ...Elope saurus ladyfish x x Erimyzon oblongus creek chubsucker x Esox americanus vermiculatus grass pickerel x Etheostoma chiorosomum, bluntnose darter

God ot goda populjarneje / Aadu Kana

Index Scriptorium Estoniae

Kana, Aadu

2005-01-01

Parima betoonehitise konkursist. Aasta betoonehitis 2004 - Ülemiste hotell, arhitekt Martin Aunin, projekteerija AS EA Reng, konstruktsioonid: IB Pike, ehitaja AS FKSM, betoon: AS HC Betoon. Eeriauhinnad: Rakvere spordihalli ja Veskimöldre lasteaia betoonelementide tootja E-Betoonelement, IB Pike ja Tiit Masso City Plaza konstruktsioonide eest, Kakumäel asuva eramu tellija ja sisekujundaja Raina Lillepõld

78 FR 65009 - Advisory Committee On Reactor Safeguards; Notice of Meeting

Science.gov (United States)

2013-10-30

... Pike, Rockville, Maryland. Thursday November 7, 2013, Conference Room T2-B1, 11545 Rockville Pike... will make opening remarks regarding the conduct of the meeting. 8:35 a.m.-10:30 a.m.: Safety Evaluation... safety evaluation associated with the Watts Bar, Unit 2, operating license. 10:45 a.m.-12:45 p.m.: Near...

Morphometric analysis of early Eocene Corbisema skeletons (Silicoflagellata) in Mors, Denmark

Science.gov (United States)

Tsutsui, Hideto; Jordan, Richard W.; Nishiwaki, Niichi; Nishida, Shiro

2018-02-01

A two-dimensional morphometric programme, recently designed to measure fossil skeletons of the silicoflagellate genus Corbisema, was used to investigate specimens of the C. apiculata-C. triacantha complex found in a sample from the Fur Formation on the island of Mors, Jutland, Denmark. The semi-automated programme measured the lengths of the basal sides and radial spines, the basal side curvature, and the location of the pikes (if present) from a photographic database (N = 469). As a result, two distinct morphological groups were revealed based on their radial spine length : basal side length ratio and the presence or absence of pikes: group A (ratio of 1 : 1.3, no pikes) and group B, with the latter subdivided into B1 (ratio of 1 : 7, with pikes) and B2 (ratio of 1 : 6, no pikes). Group A (C. triacantha sensu lato) possesses a small basal ring with relatively straight basal sides and long radial spines, while group B has a large basal ring with curved basal sides and short radial spines. In B1 specimens (C. apiculata sensu stricto) the pikes are positioned 0 to 1 µm away from the junction point of the strut and basal ring. This would suggest that B1 double skeletons are likely to be in the Star-of-David configuration, while A and B2 double skeletons (which lack pikes) are likely to be in the corner-to-corner configuration. Compared with the previously published biometric studies of extant Stephanocha (Stephanocha speculum complex in the Southern Ocean and S. medianoctisol in the Arctic Ocean), the results are somewhat different: although C. triacantha sensu lato (group A) is similar to the modern species of Stephanocha, the latter have smaller basal ring diameters, whereas specimens of C. apiculata sensu lato (types B1 and B2) have large basal rings. If their cell diameters are calculated, B1 is the largest, with S. speculum being the smallest - about half the size of B1. This could suggest that the relationship between radial spine length and mean basal ring

BASEMAP, PIKE COUNTY, MS

Data.gov (United States)

Federal Emergency Management Agency, Department of Homeland Security — FEMA Framework Basemap datasets comprise six of the seven FGDC themes of geospatial data that are used by most GIS applications (Note: the seventh framework theme,...

TERRAIN, PIKE COUNTY, MS

Data.gov (United States)

Federal Emergency Management Agency, Department of Homeland Security — Terrain data, as defined in FEMA Guidelines and Specifications, Appendix N: Data Capture Standards, describes the digital topographic data that was used to create...

Parima betoonehitise konkurss aasta-aastalt populaarsem / Aadu Kana

Index Scriptorium Estoniae

Kana, Aadu

2005-01-01

Aasta betoonehitis 2004 - Ülemiste hotell, arhitekt Martin Aunin, projekteerija AS EA Reng, konstruktsioonid: IB Pike, ehitaja AS FKSM, betoon: AS HC Betoon. Eeriauhinnad: Rakvere spordihalli ja Veskimöldre lasteaia betoonelementide tootja E-Betoonelement, IB Pike ja Tiit Masso City Plaza konstruktsioonide eest, Kakumäel asuva eramu tellija ja sisekujundaja Raina Lillepõld huvitava lähenemise eest

Impacts of species introductions on the health of fish communities receiving chronic radionuclide exposures

International Nuclear Information System (INIS)

Yankovich, T.L.; Casselman, J.M.; Cornett, R.J.J.

2006-01-01

A study was conducted to evaluate the potential impacts of a northern pike introduction on the health of a fish community receiving chronic radionuclide exposure, primarily from 90 Sr. Overall, although significant changes occurred in the community composition and the health of fish populations following the pike introduction, these were not linked to radionuclide dose to fishes. This finding was further supported by assessing the health of forage fishes, which did not significantly change in the pre-versus post-pike fish communities and were comparable in condition to forage fishes inhabiting lakes with background radionuclide levels. Application of such resilient species as 'baseline organisms' can provide a useful tool in the routine monitoring of ecosystems affected by multiple stressors. (author)

Proceedings Papers of the AFSC (Air Force Systems Command) Avionics Standardization Conference (2nd) Held at Dayton, Ohio on 30 November-2 December 1982. Volume 2

Science.gov (United States)

1982-11-01

validation will result in sustainable avionics. 747 .l REFERENCES 1. Hitt, Ellis F., Webb, Jeff J., Lucius, Charles E., Bridgman, Michael S., Eldredge...There is * software requirement for cross compiler facilities for a t~rget computer system. The Project Manager for the effort has bezo assigned the

Biogeochemical environments of streambed-sediment pore waters withand without arsenic enrichment in a sedimentary rock terrain, New Jersey Piedmont, USA

Science.gov (United States)

Mumford, Adam C.; Barringer, Julia L.; Reilly, Pamela A.; Eberl, Dennis D.; Blum, Alex E.; Young, Lily Y.

2015-01-01

Release of arsenic (As) from sedimentary rocks has resulted in contamination of groundwater in aquifers of the New Jersey Piedmont Physiographic Province, USA; the contamination also may affect the quality of the region's streamwater to which groundwater discharges. Biogeochemical mechanisms involved in the release process were investigated in the streambeds of Six Mile Run and Pike Run, tributaries to the Millstone River in the Piedmont. At Six Mile Run, streambed pore water and shallow groundwater were low or depleted in oxygen, and contained As at concentrations greater than 20μg/L. At Pike Run, oxidizing conditions were present in the streambed, and the As concentration in pore water was 2.1μg/L. The 16S rRNA gene and the As(V) respiratory reductase gene, arrA, were amplified from DNA extracted from streambed pore water at both sites and analyzed, revealing that distinct bacterial communities that corresponded to the redox conditions were present at each site. Anaerobic enrichment cultures were inoculated with pore water from gaining reaches of the streams with acetate and As(V). As(V) was reduced by microbes to As(III) in enrichments with Six Mile Run pore water and groundwater, whereas no reduction occurred in enrichments with Pike Run pore water. Cloning and sequencing of the arrA gene indicated 8 unique operational taxonomic units (OTUs) at Six Mile Run and 11 unique OTUs at Pike Run, which may be representative of the arsenite oxidase gene arxA. Low-oxygen conditions at Six Mile Run have favored microbial As reduction and release, whereas release was inhibited by oxidizing conditions at Pike Run.

Before-after, control-impact analysis of evidence for the impacts of water level on Walleye, Northern Pike and Yellow Perch in lakes of the Rainy-Namakan complex (MN, USA and ON, CA.

Directory of Open Access Journals (Sweden)

James H Larson

Full Text Available Water level (WL fluctuations in lakes influence many aspects of ecosystem processes. Concern about the potential impact of WL fluctuations on fisheries was one of the factors that motivated the decision in 2000 to alter the management of WL in the Rainy-Namakan reservoir complex (on the border between the U.S. state of Minnesota and the Canadian province of Ontario. We used a Before-After, Control-Impact (BACI framework to identify potential impacts of the change in WL management to Walleye, Northern Pike and Yellow Perch catch per unit effort (CPUE. The CPUE of these species from 1990-1999 and from 2005-2014 were compared in four impact lakes (Lake Kabetogama, Namakan Lake, Rainy Lake and Sand Point Lake and two control lakes (Lake of the Woods and Lake Vermilion using a simple Bayesian model. Changes in fish CPUE in the impact lakes were often similar to changes that occurred in at least one control lake. The only change that was not similar to changes in control lakes was an increase of Yellow Perch in Lake Kabetogama. The two control lakes often differed substantially from each other, such that if only one had been available our conclusions about the role of WL management on fisheries would be very different. In general, identifying cause-and-effect relationships in observational field data is very difficult, and the BACI analysis used here does not specify a causative mechanism, so co-occurring environmental and management changes may obscure the effect of WL management.

Sobre la supuesta presencia de una inscripción de la Legio VII Gemina (CIL II, 1126 en Lucentum (Alicante = About the supposed presence of an inscription of the Legio VII Gemina (CIL II, 1126 in Lucentum (Alicante

Directory of Open Access Journals (Sweden)

Antonio Manuel Poveda Navarro

2014-12-01

Full Text Available El objetivo de este artículo es aclarar la confusión existente en identificar por error una inscripción latina del soldado romano de la Legio VII Gemina, Lucius Valerius Nepos, con la de un supuesto hallazgo en los alrededores de la ciudad romana de Lucentum, Alicante, cuando en realidad se trata de una lápida romana de dicho personaje perteneciente a la ciudad romana de Italica, Santiponce (Sevilla. De este modo es necesario eliminar dicho documento epigráfico del listado de las inscripciones conocidas de Alicante.The aim of this article is to clarify the existing confusion in mistakenly identify a Latin inscription of a Roman soldier of the Legio VII Gemina, Lucius Valerius Nepos, with an apparent finding in the surroundings of the Roman city of Lucentum, Alicante, when in fact it is a Roman tombstone of that personage and belong to the Roman city of Italica, Santiponce (Sevilla. Thereby must be remove this epigraphic document from the list of Alicantes’s known inscriptions.

Passage of north temperate fish through the Cowan Dam Denil fishway

International Nuclear Information System (INIS)

Christense, B.

1994-01-01

Fish passage through a standard Denil fishway under low tailwater conditions was studied at Cowan Dam in Saskatchewan in 1990. In 1991 and 1992, fish passage through an experimental two-level Denil fishway was studied at the same location under similar flow conditions. Six species of fish used the Cowan Dam Denil fishway in 1990: northern pike, walleye, white sucker, longnose sucker, cisco, and lake whitefish. Tag returns suggest that most fish that congregate below Cowan Dam in the spring originate in Lac Ile-a-la-Crosse 150-200 km downstream. Northern pike waited until spawning had been completed before ascending the fishway. Only 12.1% of the pike congregated below the dam are estimated to have ascended the fishway. During 1990 and 1991, the number of pike ascending the fishway appeared to decline as water velocities in the standard and two-level Denil fishways increased. Mean pike length also declined over the period of fish movement, and as water velocities in the standard Denil declined. Walleye did not appear to have any difficulty ascending the standard Denil in 1990, but they did appear to have difficulty ascending the two-level Denil in 1991. Only 29% of the white suckers that ascended the fishway did so prior to spawning. According to recaptures of tagged fish, 58.8% of white suckers present in the tailwater pool ascended the standard Denil in 1990. White suckers also appeared to be able to ascend the two-level Denil without difficulty. Of the longnose suckers, 98% ascended the fishway prior to spawning in 1990, and appeared to ascend both the standard and two-level fishways without obvious delay or difficulty. Only small numbers of cisco and lake whitefish utilized the standard Denil fishway in 1990. 68 refs., 56 figs., 24 tabs

HYDRAULICS, PIKE COUNTY, OHIO, USA

Data.gov (United States)

Federal Emergency Management Agency, Department of Homeland Security — "Recent developments in digital terrain and geospatial database management technology make is possible to protect this investment for existing and future projects to...

HYDRAULICS, PIKE COUNTY, KENTUCKY, USA

Data.gov (United States)

Federal Emergency Management Agency, Department of Homeland Security — Recent developments in digital terrain and geospatial database management technology make it possible to protect this investment for existing and future projects to...

SURVEY, PIKE COUNTY, KY, USA

Data.gov (United States)

Federal Emergency Management Agency, Department of Homeland Security — Survey data includes spatial datasets and data tables necessary to digitally represent data collected in the survey phase of the study. (Source: FEMA Guidelines and...

Mercury concentrations of fish in Southern Indian Lake and Issett Lake, Manitoba 1975-88: The effect of lake impoundment and Churchill River diversion

International Nuclear Information System (INIS)

Strange, N.E.; Bodaly, R.A.; Fudge, R.J.P.

1991-01-01

Southern Indian and Issett Lakes in northern Manitoba were flooded in 1976 as part of Manitoba Hydro's Churchill River diversion project. Fish were collected from 1975 to 1988 from five regional sites on the lakes to examine the effects of impoundment and river diversion on muscle mercury concentrations. Raw data for individual fish caught in 1987 and 1988 are presented, along with means and analyses calculated over the entire 1975-1988 study period. Mercury concentrations in whitefish, pike, and walleye increased significantly after impoundment. Whitefish mercury levels peaked in 1978 and have since declined to near pre-flooding levels. Northern pike and walleye mercury levels were much higher than for whitefish. Pike mercury concentrations showed no indication of declining after 12 years of impoundment, but walleye mercury levels at 2 of the 5 Southern Indian Lake sites declined from maximum recorded levels. Significant variability in fish mercury concentrations was noted both from year to year and among the sites. It is suggested that site-to-site variations are due to varying conditions in the reservoir which stimulate mercury methylation. Since there appears to be an ongoing long-term source of mercury and organic material from the eroding shorelines, pike and walleye mercury concentrations are expected to remain high for many years. 25 refs., 7 figs., 20 tabs

Characterizing novel endogenous retroviruses from genetic variation inferred from short sequence reads

DEFF Research Database (Denmark)

Mourier, Tobias; Mollerup, Sarah; Vinner, Lasse

2015-01-01

From Illumina sequencing of DNA from brain and liver tissue from the lion, Panthera leo, and tumor samples from the pike-perch, Sander lucioperca, we obtained two assembled sequence contigs with similarity to known retroviruses. Phylogenetic analyses suggest that the pike-perch retrovirus belongs...... to the epsilonretroviruses, and the lion retrovirus to the gammaretroviruses. To determine if these novel retroviral sequences originate from an endogenous retrovirus or from a recently integrated exogenous retrovirus, we assessed the genetic diversity of the parental sequences from which the short Illumina reads...

Targeting Siah2 as Novel Therapy for Metastatic Prostate Cancer

Science.gov (United States)

2016-10-01

Institutes of Health 900 Rockville Pike Bethesda, MD 20892 Phone : (240) 276-6280 15 E-mail: sarah.lee@nih.gov 1 R01 CA179170-02 (PI: Ronai, Z.) 09/30...Cammie La National Institutes of Health 9000 Rockville Pike Bethesda, MD 20892 Phone : (240) 276-6323 E-mail: cl311z@nih.gov 1 R01 CA172017-02...PI: Ronai, Z.) 07/01/13–04/30/16 1.2 calendar (10.0%) NIH/NCI ATF2 Oncogenic Addiction in Melanoma Goals: The major goal of this project is to

Linear transform of the multi-target survival curve

Energy Technology Data Exchange (ETDEWEB)

Watson, J V [Cambridge Univ. (UK). Dept. of Clinical Oncology and Radiotherapeutics

1978-07-01

A completely linear transform of the multi-target survival curve is presented. This enables all data, including those on the shoulder region of the curve, to be analysed. The necessity to make a subjective assessment about which data points to exclude for conventional methods of analysis is, therefore, removed. The analysis has also been adapted to include a 'Pike-Alper' method of assessing dose modification factors. For the data cited this predicts compatibility with the hypothesis of a true oxygen 'dose-modification' whereas the conventional Pike-Alper analysis does not.

Arnold Gesell and the maturation controversy.

Science.gov (United States)

Dalton, Thomas C

2005-01-01

This article examines the work of Arnold Lucius Gesell and argues that he not only paved the way for contemporary research in motor development, but that he and colleagues anticipated fundamental issues about growth that must be addressed by psychologists and neuroscientists who are committed to the advancement of developmental science. Arnold Lucius Gesell was a pioneer in developmental psychology when the field was in its infancy. He worked diligently for the rights of physically and mentally handicapped children to receive special education that would enable them to find gainful employment. Gesell's writings in books and popular magazines increased public awareness of and support for preschool education and better foster care for orphans. Despite these achievements, many of his successors have questioned his views about infant development. Developmental psychologists have criticized Gesell for proposing a stage theory of infant growth that has fallen into disfavor among contemporary researchers. His conception of development as a maturational process has been challenged for allegedly reducing complex behavioral, perceptual, and learning processes to genetic factors. The author rejects this overly simplistic interpretation and contends that Gesell's work continues to stand the test of time.

Civis Europeus Sum oder: Chamberlain spielen / Robert von Lucius

Index Scriptorium Estoniae

Lucius, Robert von

2014-01-01

Baltimaade presidentidele Kuldse Victoria auhinna omistamisest. Eesti ja Leedu presidentide kõnedest. Toomas Hendrik Ilvese vestlusest Joachim Gauck'iga ja mõtteavaldustest Saksa Välissuhete Nõukogus

Floodplain Mapping for Pike County, KY

Data.gov (United States)

Federal Emergency Management Agency, Department of Homeland Security — he Floodplain Mapping/Redelineation study deliverables depict and quantify the flood risks for the study area. The primary risk classifications used are the...

The Environmental Assessment and Management (TEAM) Guide: New Mexico Supplement

Science.gov (United States)

2010-03-01

dace, Phoxinus erythrogaster (j) Colorado pikeminnow, Ptychocheilus lucius (k) loach minnow, Tiaroga cobitis 5-13 Natural Resources Management...writing by the Department, off-site at a readily available location. ST.4.38.NM. Corrective actions must be ta ken u pon a release involving a...cause a public nuisance or threat to human health, safety and welfare, or the environment. Verify th at when c ontaminated s oil is ta ken o ff s ite

Masgid Mahmoudeya: Sheikh Hamed: Fajr Adhan

OpenAIRE

Kipervaser, Anna; On Look Films; LLC

2010-01-01

Sheikh Hamed recites the Fajr adhan at 3:53am on August 19, 2010 at Mahmoudeya Mosque in Sayeda Aisha, calling the faithful to come and to pray. He has been a muezzin here for 20 years. Video & audio recordings of 6 muezzins reciting the adhan (Muslim call to prayer), with supporting photographs of muezzins and their respective mosques. Hartley Film Foundation, National Geographic All Roads Film Project, Lucius and Eva Eastman Fund

77 FR 16315 - Indiana Disaster #IN-00041

Science.gov (United States)

2012-03-20

..., Harrison, Jackson, Jennings, Lawrence, Ohio, Orange, Pike, Spencer, Switzerland, Vanderburgh. Kentucky: Carroll, Daviess, Henderson, Jefferson, Oldham, Trimble. The Interest Rates are: Percent For Physical...

Atebrina, medicamento heroico contra el paludismo

Directory of Open Access Journals (Sweden)

Predo Del Corral

1933-04-01

Maracay, las muestras del excelente preparado sintético, que con el nombre de Atebrina está en vías de lanzarlo al mercado mundial la Bayer Meister Lucius, I. G. Farbenindustrie Aktiengesellschaft  I. G. de Leverkusen, Alemania; muestras que según correspondencia de dicha casa fabricante fueron las primeras enviadas al país, a los fines de investigación antes de poner este preparado a la orden de nuestro público.

Komunikace ve vybrané organizaci

OpenAIRE

HRUBÁ, Jana

2017-01-01

The aim of my bachelor work is to analyze communication in a chosen company and suggest possible changes to improve it. Literary research explain communication in general and then it focuses on the communication with the customers. Practical part was based on questionnaire, which tries to find out how customer perceive communication with the chosen company and how company perceive communication with customers. This research was done in a company STN-ESOX spol. s r.o.

Genetic Underpinnings of Alopecia Areata

Medline Plus

Full Text Available ... Statement Accessibility Disclaimer Digital Strategy Open Source Data Public Data Listing NIH...Turning Discovery Into Health® National Institutes of Health, 9000 Rockville Pike, Bethesda, ...

75 FR 47820 - Generic Drug User Fee; Public Meeting; Request for Comments

Science.gov (United States)

2010-08-09

... Hilton Washington DC/ Rockville and Executive Meeting Center, 1750 Rockville Pike, Rockville, MD 20852... 17, 2010, at the Hilton Washington DC/Rockville and Executive Meeting Center, see Location). In...

Masgid Sultan Qansuh Al Ghury: Sheikh Antar: Asr Adhan

OpenAIRE

Kipervaser, Anna; LLC; On Look Films

2010-01-01

Sheikh Antar recites ‘Asr adhan at 4:38pm on August 10, 2010 at the Sultan Qansuh Al Ghury Mosque in El-Hussein (Islamic Cairo), calling the faithful to come and to pray. Sheikh Antar has recited the adhan here for 5 years, as a volunteer. Video & audio recordings of 6 muezzins reciting the adhan (Muslim call to prayer), with supporting photographs of muezzins and their respective mosques. Hartley Film Foundation, National Geographic All Roads Film Project, Lucius and Eva Ea...

77 FR 58900 - Mississippi Disaster #MS-00060

Science.gov (United States)

2012-09-24

... 09/11/2012. Incident: Hurricane Isaac. Incident Period: 08/26/2012 through 09/11/2012. DATES..., Newton, Pearl River, Perry, Pike, Smith, Stone, Walthall, Wayne, Wilkinson. The Interest Rates are...

78 FR 59040 - National Institute of General Medical Sciences; Notice of Closed Meeting

Science.gov (United States)

2013-09-25

... Center, 7400 Wisconsin Avenue, Bethesda, MD 20814. Contact Person: Brian R. Pike, Ph.D., Scientific... Chemistry Research; 93.862, Genetics and Developmental Biology Research; 93.88, Minority Access to Research...

Automated turn pike using PLC and SCADA

Science.gov (United States)

Silpa Sreedhar, P.; Aiswarya, P.; Kathirvelan, J.

2017-11-01

We propose a smart turnpike based on Programmable Logic Controller (PLC) and Supervisory Control and Data Acquisition Systems (SCADA) in this paper. In this work, the basic idea is to measure the weight of the vehicles and classify them according to its weight to the respective lanes. It is difficult for the turnpike people to monitor the whole process all the time. So, this PLC based diversion system can be implemented in turnpikes to reduce the difficulties. This method will work based on weight sensors (piezo-resistive) whose output will be fed to a PLC, which will control the vehicle diversion. Using SCADA software, the whole process can be monitored from a remote area. The algorithm developed in this successfully installed in real time system.

Floodplain Mapping Submission for PIKE County MS

Data.gov (United States)

Federal Emergency Management Agency, Department of Homeland Security — The Floodplain Mapping/Redelineation study deliverables depict and quantify the flood risks for the study area. The primary risk classifications used are the...

DCS Terrain Submission for Pike County, KY

Data.gov (United States)

Federal Emergency Management Agency, Department of Homeland Security — Terrain data, as defined in FEMA Guidelines and Specifications, Appendix M: Data Capture Standards, describes the digital topographic data that were used to create...

Lower Flathead System Fisheries Study, 1985 Annual Report.

Energy Technology Data Exchange (ETDEWEB)

Pajak, Paul; Bradshaw, William H.; DeSantos, Joseph M.; Darling, James E.

1986-01-01

Existing aquatic habitat in the lower Flathead River and its tributaries was assessed for its relationship to the present size, distribution, and maintenance of all salmonid species, northern pike, and largemouth bass populations. The objectives were to assess how and to what extent hydroelectric development and operation affects the quality and quantity of aquatic habitat in the lower Flathead River and its tributaries and life stages of existing trout, pike, and largemouth bass populations, evaluate the potential for increasing quality habitat, and thus game fish production, through mitigation, and develop an array of fisheries management options to mitigate the impacts of present hydroelectric operations, demonstrating under each management option how fish populations would benefit and hydroelectric generation capabilities would be modified.

14. III 5. betoonipäeval teatati betoonikonkursi võitjad

Index Scriptorium Estoniae

2005-01-01

Konkursi peapreemia pälvis Martin Aunin (Ülemiste hotell), projekteerija auhinna AS EA Reng, konstruktsioonide auhinna inseneribüroo Pike OÜ, ehitaja auhinna AS FKSM ja betooni auhinna AS HC Betoon

Medline Plus

Full Text Available ... made. ©2018 BroadcastMed About MedlinePlus Site ... Pike, Bethesda, MD 20894 U.S. Department of Health and Human Services National Institutes of Health Page last updated on ...

A Study of Fish Lice (Argulus Sp. Infection in Freshwater Food Fish

Directory of Open Access Journals (Sweden)

Aalberg K.

2016-09-01

Full Text Available Argulus sp., commonly referred to as fish lice, are crustacean ectoparasites of fishes. The hematophagous parasites attach to and feed off the integument of their hosts. Outbreaks of epizootics have been reported worldwide, causing mass mortalities and having serious economic implications for fish farms and culture efforts. Argulus fish lice may also serve as vectors of infectious diseases and as intermediate hosts of other parasites. Two native European species, A. foliaceus and A. coregoni, as well as the invasive Japanese fish louse A. japonicus, have previously been recorded in Slovakia. This study investigated samples collected at fish farms and culture sites of Common carp (Cyprinus carpio L., Pike-perch (Sander lucioperca L. and Brook trout (Salvelinus fontinalis M. in Eastern Slovakia, as well as samples collected from live fish imported to the Slovak Republic. A quantitative description of the of Argulus sp. was recorded from each locality. Samples from Common carp were identified as the invasive A. japonicus, and samples from Pike-perch and Brook trout were identified as A. foliaceus. Evidence of a mixed infection of Pike-perch with both A. foliaceus and A. japonicus was found in samples from Zemplínska Šírava, which was substantiated by electron microscopic examination. Morphometric characteristics were measured and averages and ranges produced for each species and sex.

Mapping Loci That Control Tuber and Foliar Symptoms Caused by PVY in Autotetraploid Potato (Solanum tuberosum L.).

Science.gov (United States)

da Silva, Washington L; Ingram, Jason; Hackett, Christine A; Coombs, Joseph J; Douches, David; Bryan, Glenn J; De Jong, Walter; Gray, Stewart

2017-11-06

Potato tuber necrotic ringspot disease (PTNRD) is a tuber deformity associated with infection by the tuber necrotic strain of Potato virus Y (PVY NTN ). PTNRD negatively impacts tuber quality and marketability, and poses a serious threat to seed and commercial potato production worldwide. PVY NTN symptoms differ in the cultivars Waneta and Pike: Waneta expresses severe PTNRD and foliar mosaic with vein and leaf necrosis, whereas Pike does not express PTNRD and mosaic is the only foliar symptom. To map loci that influence tuber and foliar symptoms, 236 F 1 progeny of a cross between Waneta and Pike were inoculated with PVY NTN isolate NY090029 and genotyped using 12,808 potato SNPs. Foliar symptom type and severity were monitored for 10 wk, while tubers were evaluated for PTNRD expression at harvest and again after 60 d in storage. Pairwise correlation analyses indicate a strong association between PTNRD and vein necrosis (τ = 0.4195). QTL analyses revealed major-effect QTL on chromosomes 4 and 5 for mosaic, 4 for PTNRD, and 5 for foliar necrosis symptoms. Locating QTL associated with PVY-related symptoms provides a foundation for breeders to develop markers that can be used to eliminate potato clones with undesirable phenotypes, e.g. , those likely to develop PTNRD or to be symptomless carriers of PVY. Copyright © 2017 Silva et al.

About MedlinePlus

Science.gov (United States)

... Want to learn more? Guide to Healthy Web Surfing Sign Up for Email Updates Training Materials ... Pike, Bethesda, MD 20894 U.S. Department of Health and Human Services National Institutes of Health Page ...

77 FR 17102 - Sunshine Federal Register Notice

Science.gov (United States)

2012-03-23

...' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. ADDITIONAL ITEMS TO BE...-11-13 (Apr. 26, 2011), Docket No. 50- 346-LR (Tentative). This meeting will be webcast live at the...

78 FR 32476 - Advisory Committee on Reactor Safeguards (ACRS); Meeting of the ACRS Subcommittee on Digital I&C...

Science.gov (United States)

2013-05-30

..., June 4, 2013--1:00 p.m. Until 5:00 p.m. The Subcommittee will review and discuss all cyber security... Flint North building, 11555 Rockville Pike, Rockville, MD. After registering with security, please...

City Plaza - intervjuu konstruktor Tiit Massoga / Tiit Masso ; interv. Martin Jänes

Index Scriptorium Estoniae

Masso, Tiit, 1935-

2005-01-01

Konkursil "Aasta betoonehitis 2004" pälvis City Plaza eriauhinna insenertehnilise lahenduse eest. Arhitektuur: OÜ Alver Trummal Arhitektid, projekteerija: IB Pike OÜ, Tiit Masso, ehitaja: Estconde-E OÜ. Ill.:4 välisvaadet, sisevaade

Medline Plus

Full Text Available ... for EHRs For Developers U.S. National Library of Medicine 8600 Rockville Pike, Bethesda, MD 20894 U.S. Department of Health and Human Services National Institutes of Health Page last updated: ...

Medline Plus

Full Text Available ... for EHRs For Developers U.S. National Library of Medicine 8600 Rockville Pike, Bethesda, MD 20894 U.S. Department of Health and Human Services National Institutes of Health Page last updated ...

Pärnu Kontserdimaja : Pärnu, Aida tn. 4 / Katrin Koov

Index Scriptorium Estoniae

Koov, Katrin, 1973-

2003-01-01

Projekteerija: COO Arhitektid. Arhitektid-sisekujundajad Hanno Grossschmidt, Kaire Nõmm, Katrin Koov. Konstruktor: Inseneribüroo Pike OÜ. Projekt: jaanuar 2002, valmis: november 2002. I ja II korruse plaan, 2 välis- ja 3 sisevaadet

Feeding under predation risk: potential sex-specific response of perch (Perca fluviatilis).

Czech Academy of Sciences Publication Activity Database

Estlander, Satu; Nurminen, L.

2014-01-01

Roč. 23, č. 3 (2014), s. 478-480 ISSN 0906-6691 Institutional support: RVO:60077344 Keywords : foraging * sexual size dimorphism * predation * perch * pike Subject RIV: EH - Ecology, Behaviour Impact factor: 1.701, year: 2014

EPRA avas 20. tegevushooaja

Index Scriptorium Estoniae

2015-01-01

15. septembril oli EPRA-l külas kogenud briti suhtekorraldaja ja ajalehe The Sun endine toimetaja Stuart Higgins ning Eestis veel katmata ala, õigusala meediaekspert Julian Pike. Selle kohtumisega avas EPRA oma 20. tegevushooaja

Tallinna lennujaam - rehielamusse kätketud vene ja prantsuse modernsus / Signe Kalberg

Index Scriptorium Estoniae

Kalberg, Signe, 1959-

2009-01-01

Konkursil "Aasta Betoonehitis 2008" Eesti aasta betoonehitise tiitli pälvinud Tallinna lennujaama reisiterminali laiendusest. Arhitekt: Jean-Marie Bonnard, Sofreavia SA, Prantsusmaa. Projekteerija: AS EA Reng. Konstruktsioonid: OÜ Inseneribüroo Pike. Ehitaja: AS Skanska EMV

To Your Health: NLM Update—MedlinePlus

Science.gov (United States)

... illustrate health care May 7 2018 Transcript Genetic architecture of mental disorders April 30 2018 Transcript Why ... MedlinePlus Connect for EHRs For Developers U.S. National Library of Medicine 8600 Rockville Pike, Bethesda, MD 20894 ...

Genetic Underpinnings of Alopecia Areata

Medline Plus

Full Text Available ... Accessibility Disclaimer Digital Strategy Open Source Data Public Data Listing NIH...Turning Discovery Into Health® National Institutes of Health, 9000 Rockville Pike, Bethesda, Maryland 20892 U.S. Department of Health and Human Services

MedlinePlus FAQ: Disease or Condition Information

Science.gov (United States)

... on the Health Topics button on the MedlinePlus homepage. You can also find the Health Topics button ... MedlinePlus Connect for EHRs For Developers U.S. National Library of Medicine 8600 Rockville Pike, Bethesda, MD 20894 ...

Tartu Tervishoiu Kõrgkool = Tartu Health Care College

Index Scriptorium Estoniae

2015-01-01

Tartu Tervishoiu Kõrgkool Nooruse tänav 5, valminud 2011. Arhitektid Indrek Peil, Siiri Vallner (Kavakava), kaasautorid Johannes Feld, Sten-Mark Mändmaa, Andro Mänd, Ragnar Põllukivi. Sisearhitekt Tarmo Piirmets (Pink). Konstruktorid Ivar Muuk, Andres Hirve (Pike)

45 CFR 170.299 - Incorporation by reference.

Science.gov (United States)

2010-10-01

... Architecture (CDA) Release 2—Continuity of Care Document (CCD), April 01, 2007, IBR approved for § 170.205. (4... § 170.207. (2) [Reserved] (f) U.S. National Library of Medicine, 8600 Rockville Pike, Bethesda, MD 20894...

Alabama Cooperative Extension System - ACES.edu

Science.gov (United States)

Marshall Mobile Monroe Montgomery Morgan Perry Pickens Pike Randolph Russell Shelby St. Clair Sumter Marengo Tuscaloosa Greene Pickens Sumter Conecuh Escambia Monroe Clarke Choctaw Washington Baldwin Mobile Office Communications & Marketing Information Technology ACES Publications & Store 4-H &

76 FR 32387 - Kentucky Disaster Number KY-00040

Science.gov (United States)

2011-06-06

... Damage and Economic Injury Loans): Ballard, Daviess, Henderson, Lawrence, McLean, Pike. Contiguous..., Morgan, Muhlenberg, Ohio. Illinois: Alexander. Indiana: Spencer, Vanderburgh, Warrick. Virginia: Buchanan, Dickenson, Wise. West Virginia: Mingo. All other information in the original declaration remains unchanged...

Genetics Home Reference: leukoencephalopathy with vanishing white matter

Science.gov (United States)

... Torres C, Pröschel C. EIF2B5 mutations compromise GFAP+ astrocyte generation in vanishing white matter leukodystrophy. Nat Med. ... of Medicine Lister Hill National Center for Biomedical Communications 8600 Rockville Pike, Bethesda, MD 20894, USA HONCode ...

African Safety Promotion: A Journal of Injury and Violence ...

African Journals Online (AJOL)

Comparison of motor vehicle collision and non-motor vehicle collisions related child restraint seat injuries in British Columbia: 1997-2002. E Desapriya, A Basic, I Pike. http://dx.doi.org/10.4314/asp.v6i1.31651 ...

Pärnu raamatukogu = Pärnu Library

Index Scriptorium Estoniae

2009-01-01

Pärnu Keskraamatukogu hoonest, mille autorid on Markus Kaasik, Andres Ojari, Ilmar Valdur, Kalle Komissarov ja Mihkel Tüür, projekteerija Kolm Pluss Üks, konstruktor Pike. Projekt 2001, valmis: 1. etapp - 2003, 2. etapp - 2008. Lisa: Ehituslugu 1999-2009

77 FR 29678 - National Institute of Mental Health; Notice of Closed Meeting

Science.gov (United States)

2012-05-18

... evaluate personal qualifications and performance, and competence of individual investigators. Place: Hilton... Functional Neuroanatomy, and the Laboratory of Molecular Biology. Place: Hilton Washington/Rockville, 1750... Scientists. Place: Hilton Washington/Rockville, 1750 Rockville Pike, Rockville, MD 20852. Time: June 5, 2012...

29 CFR 1410.3 - Individual access requests.

Science.gov (United States)

2010-07-01

..., North Dakota, South Dakota, Michigan, and Ohio (except counties listed under the Southern Region). 3..., Floyd, Harrison, Crawford, Perry, Spencer, DuBois, Pike, Gibson, Posey, Vanderburgh, and Warrick); Ohio..., Caldwell, Livingston, Linn, Macon, Shelby, Randolph, Chariton, Carrol, Ray, Clay, Platte, Jackson...

Rubinstein-Taybi syndrome

Science.gov (United States)

... is noticeable after birth Slow development of cognitive skills Slow development of motor skills accompanied by low muscle tone Other signs and ... Guidelines Viewers & Players MedlinePlus Connect for EHRs For Developers U.S. National Library of Medicine 8600 Rockville Pike, ...

Medline Plus

Full Text Available ... 2014) These webcasts are provided to the National Library of Medicine by BroadcastMed . We welcome your comments . ... MedlinePlus Connect for EHRs For Developers U.S. National Library of Medicine 8600 Rockville Pike, Bethesda, MD 20894 ...

76 FR 24933 - Sunshine Federal Register Notice

Science.gov (United States)

2011-05-03

...: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of...). (Contact: Robert Kahler, 301-415-7528.) This meeting will be webcast live at the Web address-- http://www...) (Contact: Nathan Sanfilippo, 301-415-3951.) [[Page 24934

77 FR 61663 - Endangered and Threatened Wildlife and Plants; Determination of Endangered Species Status for the...

Science.gov (United States)

2012-10-10

..., Bullock, Butler, Coffee, Conecuh, Covington, Crenshaw, Dale, Escambia, Geneva, Henry, Houston, Monroe, and... detritus (disintegrated organic debris), algae, diatoms, and bacteria (Strayer et al. 2004, pp. 430-431... Choctawhatchee.. Geneva, Coffee, AL Historical and Current. Dale, Pike, Barbour. Flat Creek Choctawhatchee...

DCS Terrain Submittal for Pike County, Georgia, USA

Data.gov (United States)

Federal Emergency Management Agency, Department of Homeland Security — Terrain data, as defined in FEMA Guidelines and Specifications, Appendix N: Data Capture Standards, describes the digital topographic data that was used to create...

The first isolation of a rhabdovirus from perch (Perca fluviatilis) in Norway

DEFF Research Database (Denmark)

Dannevig, B.H.; Olesen, Niels Jørgen; Jentoft, S.

2001-01-01

was stained in IF with rabbit antisera against perch rhabdovirus, pike rhabdovirus and lake trout rhabdovirus and neutralised by anti perch rhabdovirus indicating. that the Norwegian perch virus is closely related to these viruses belonging to the Vesiculovirus genus of the family Rhabdoviridae...

The first isolation of a rhabdovirus from perch (Perca fluviatilis) in Norway

DEFF Research Database (Denmark)

Dannevig, B.H.; Olesen, Niels Jørgen; Jentoft, S.

2001-01-01

was stained in IF with rabbit antisera against perch rhabdovirus, pike rhabdovirus and lake trout rhabdovirus and neutralised by anti perch rhabdovirus indicating that the Norwegian perch virus is closely related to these viruses belonging to the Vesiculovirus genus of the family Rhabdoviridae...

75 FR 64749 - Request for Comments on the Use of Electronic Signatures for NRC Documents Related to the Medical...

Science.gov (United States)

2010-10-20

... Pike, Rockville, Maryland. NRC's Agencywide Documents Access and Management System (ADAMS): Publicly... systems exclusively. NRC is seeking comments on acceptable forms of electronic signatures for documents... system that generates the electronic document must have functions that provide a legible document for the...

10 CFR 110.44 - Physical security standards.

Science.gov (United States)

2010-01-01

... (corrected). (2) Information obtained through country visits, information exchanges, or other sources... at the NRC library, 11545 Rockville Pike, Rockville, Maryland 20852-2738. A copy is available for inspection at the National Archives and Records Administration (NARA). For information on the availability of...

76 FR 66075 - Center for Scientific Review; Notice of Closed Meetings

Science.gov (United States)

2011-10-25

...: Non-HIV Diagnostics, Food Safety, Sterilization/Disinfection and Bioremediation. Date: November 17-18... Hotel, 4300 Military Road, NW., Washington, DC 20015. Contact Person: Gagan Pandya, PhD, Scientific... applications. Place: Legacy Hotel and Meeting Center, 1775 Rockville Pike, Rockville, MD 20852. Contact Person...

Dietary supplementation of essential fatty acids in larval pikeperch (Sander lucioperca); short and long term effects on stress tolerance and metabolic physiology

DEFF Research Database (Denmark)

Lund, Ivar; Skov, Peter Vilhelm; Hansen, Benni Winding

2012-01-01

The present study examined the effects of feeding pike perch larvae Artemia, enriched with either docosahexanoic acid (DHA), arachidonic acid (ARA), oleic acid (OA), olive oil (OO) or a commercial enrichment DHA Selco (DS) on tissue lipid deposition, stress tolerance, growth and development...

75 FR 79345 - Privacy Act of 1974; System of Records

Science.gov (United States)

2010-12-20

... replace with ``Defense Health Services Systems, Suite 1599, 5203 Leesburg Pike, Falls Church, VA 22041... Data: This includes control number, transaction code, debit amount, credit amount, check number, Batch posting number, balance, patient identification, patient name, encounter date, comments, entry date and...

77 FR 2766 - Facility Operating License Amendment from Duke Energy Carolinas, LLC., Catawba Nuclear Station...

Science.gov (United States)

2012-01-19

..., 11555 Rockville Pike, Rockville, Maryland 20852. NRC's Agencywide Documents Access and Management System..., leakage is modeled as flow through a porous medium via the use of the Darcy equation. The leakage model is... structural margins of the SG tubes for both [[Page 2768

Fish mercury levels appear to be increasing lately: a report from 40 years of monitoring in the province of Ontario, Canada.

Science.gov (United States)

Gandhi, Nilima; Tang, Rex W K; Bhavsar, Satyendra P; Arhonditsis, George B

2014-05-20

Recent mercury levels and trends reported for North America suggest a mixed (positive/negative) outlook for the environmental mercury problem. Using one of the largest consistent monitoring data sets in the world, here we present long-term and recent mercury trends in Walleye, Northern Pike, and Lake Trout from the Province of Ontario, Canada, which contains about one-third of the world's fresh water and covers a wide geographical area (1.5 and 3 times larger than France and Germany, respectively). Overall, the results indicate that the fish mercury levels either declined (0.01-0.07 μg/g decade) or remained stable between the 1970s and 2012. The rates of mercury decline were substantially greater (mostly 0.05-0.31 μg/g decade) during the 1970s/80s possibly in response to reductions in mercury emissions. However, Walleye and Pike levels have generally increased (0.01-0.27 μg/g decade) in recent years (1995-2012), especially for northern Ontario (effect sizes for differences between the two periods ranged from 0.39 to 1.04). Proportions of Walleye and Pike locations showing a flat or increasing trend increased from 26-44% to 59-73% between the 1970s/80s and 1995-2012. Mercury emissions in North America have declined over the last few decades, and as such it is logical to expect recovery in fish mercury levels; however, other factors such as global emissions, climate change, invasive species, and local geochemistry are likely affecting the response time and magnitude.

Geochemical constraints on the origin and volume of gas in the New Albany Shale (Devonian-Mississippian), eastern Illinois Basin

Science.gov (United States)

Strapoc, D.; Mastalerz, Maria; Schimmelmann, A.; Drobniak, A.; Hasenmueller, N.R.

2010-01-01

This study involved analyses of kerogen petrography, gas desorption, geochemistry, microporosity, and mesoporosity of the New Albany Shale (Devonian-Mississippian) in the eastern part of the Illinois Basin. Specifically, detailed core analysis from two locations, one in Owen County, Indiana, and one in Pike County, Indiana, has been conducted. The gas content in the locations studied was primarily dependent on total organic carbon content and the micropore volume of the shales. Gas origin was assessed using stable isotope geochemistry. Measured and modeled vitrinite reflectance values were compared. Depth of burial and formation water salinity dictated different dominant origins of the gas in place in the two locations studied in detail. The shallower Owen County location (415-433 m [1362-1421 ft] deep) contained significant additions of microbial methane, whereas the Pike County location (832-860 m [2730-2822 ft] deep) was characterized exclusively by thermogenic gas. Despite differences in the gas origin, the total gas in both locations was similar, reaching up to 2.1 cm3/g (66 scf/ton). Lower thermogenic gas content in the shallower location (lower maturity and higher loss of gas related to uplift and leakage via relaxed fractures) was compensated for by the additional generation of microbial methane, which was stimulated by an influx of glacial melt water, inducing brine dilution and microbial inoculation. The characteristics of the shale of the Maquoketa Group (Ordovician) in the Pike County location are briefly discussed to provide a comparison to the New Albany Shale. Copyright ??2010. The American Association of Petroleum Geologists. All rights reserved.

Numismatic iconography over two evidences of sigillata hispanica from the roman town of Los Bañales (Uncastillo, Zaragoza

Directory of Open Access Journals (Sweden)

Javier Andreu Pintado

2012-09-01

Full Text Available The following paper presents two new evidences of hispanic sigillata from the roman city of Los Bañales (Uncastillo, Zaragoza, in the center of the Vascones area, that show decorations done with Marcus Aurelius’ coins. Both evidences are analyzed in the context of this habit in the spanish productions of pottery in Tricio firstable in Flavian times and then, briefly, during II century AD. The reflection goes, also, on a interpretative study of the phaenomenon testified in the hispanic sigillata in the first years of Marcus Aurelius and Lucius Verus’ reign offering a plausible explanation of its reasons.

77 FR 10558 - Agency Information Collection Activities; Proposed Collection; Comments Requested: Immigration...

Science.gov (United States)

2012-02-22

... Collection; Comments Requested: Immigration Practitioner Complaint Form ACTION: 60-Day notice of information collection under review. The Department of Justice (DOJ), Executive Office for Immigration Review (EOIR) will... Immigration Review, U.S. Department of Justice, Suite 2600, 5107 Leesburg Pike, Falls Church, Virginia, 22041...

Living in the Web's cradle

CERN Multimedia

Boyle, Alan

2007-01-01

"There's a thrill to logging onto the internet from Europe's CERN nuclear research center for the first time, just as there's a thrill to your first sip of a latte at the original Starbucks coffee shop in Seattle's Pike Place Market." (1/2 page)

75 FR 3741 - National Center for Research Resources; Notice of Closed Meetings

Science.gov (United States)

2010-01-22

... concept review of proposed grant applications. Place: Hilton Rockville, 1750 Rockville Pike, Rockville, MD.... Agenda: To review and evaluate grant applications. Place: National Institutes of Health, 6701 Rockledge.... to 5 p.m. Agenda: To review and evaluate grant applications. Place: Hilton Rockville, 1750 Rockville...

76 FR 3642 - National Cancer Institute; Notice of Closed Meetings

Science.gov (United States)

2011-01-20

...; Notice of Closed Meetings Pursuant to section 10(d) of the Federal Advisory Committee Act, as amended (5... evaluate grant applications. Place: Legacy Hotel and Meeting Center, 1775 Rockville Pike, Rockville, MD... North Marriott Hotel & Conference Center, 5701 Marinelli Road, Bethesda, MD 20852. Contact Person...

77 FR 71171 - Proposed Collection; Comment Request

Science.gov (United States)

2012-11-29

... their job, level of training, system response time when entering or accessing the information, and... information collection on respondents, including through the use of automated collection techniques or other... Division, ATTN: Karen Saddoris, CDFM-A, Project Officer, 5202 Leesburg Pike, Suite 1100, Falls Church, VA...

10 CFR 4.5 - Communications and reports.

Science.gov (United States)

2010-01-01

... otherwise indicated, communications and reports relating to this part may be sent to the NRC by mail...'s offices at 11555 Rockville Pike, Rockville, Maryland; or, where practicable, by electronic submission, for example, via Electronic Information Exchange, or CD-ROM. Electronic submissions must be made...

76 FR 57690 - TRICARE; Elimination of the Non-Availability Statement (NAS) Requirement for Non-Emergency...

Science.gov (United States)

2011-09-16

... Inpatient Mental Health Care AGENCY: Office of the Secretary, Department of Defense. ACTION: Proposed rule... inpatient mental health care in order for a TRICARE Standard beneficiary's claim to be paid. DATES: Comments... Operations, TRICARE Management Activity, 5111 Leesburg Pike, Suite 810, Falls Church, VA 22041. SUPPLEMENTARY...

Arhitektuuripoliitiliselt Jõhvi kontserdimajast = Jõhvi concert house from the point of architecture policy / Ingrid Ruudi

Index Scriptorium Estoniae

Ruudi, Ingrid, 1978-

2006-01-01

Projekteerija: AB Luhse & Tuhal OÜ. Arhitektid Ra Luhse, Tanel Tuhal. Sisekujundus: Aivar Oja, Mareliis Raid. Konstruktor: IB Pike OÜ. Insener-akustik Linda Madalik. Ehitusfirma: AS YIT Ehitus. Projekt 2003, valmis 2005. Ill.: I ja II korruse plaan, lõige, välisvaade, 2 sisevaadet, värv

77 FR 52379 - Disaster Declaration #13239 and #13240; OHIO Disaster # H-00030

Science.gov (United States)

2012-08-29

... SMALL BUSINESS ADMINISTRATION Disaster Declaration 13239 and 13240; OHIO Disaster H-00030 AGENCY... declaration of a major disaster for Public Assistance Only for the State of OHIO (FEMA-4077- DR), dated 08/20..., Perry, Pickaway, Pike, Putnam, Shelby, Van Wert, Washington. The Interest Rates are: Percent For...

78 FR 70064 - Submission for OMB Review; 30-day Comment Request: Generic Clearance To Support Programs and...

Science.gov (United States)

2013-11-22

... Institute, 11400 Rockville Pike, Room 707, Rockville, MD 20852 or call non-toll- free number 301-480-0541 or Email your request, including your address to: [email protected] . Formal requests for... (NIH) Institutes. Along with the analysis, NCI's ongoing education and outreach effort has increased...

75 FR 6401 - Medical Devices Regulated by the Center for Biologics Evaluation and Research; Availability of...

Science.gov (United States)

2010-02-09

... Biologics Evaluation and Research (HFM-17), Food and Drug Administration, suite 200N, 1401 Rockville Pike... DEPARTMENT OF HEALTH AND HUMAN SERVICES Food and Drug Administration [Docket No. FDA-2009-M-0513] Medical Devices Regulated by the Center for Biologics Evaluation and Research; Availability of Summaries...

77 FR 46528 - Sunshine Act Meeting

Science.gov (United States)

2012-08-03

...: Nuclear Regulatory Commission. DATES: Week of August 6, 2012. PLACE: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. ADDITIONAL ITEMS TO BE CONSIDERED: Week of... Proceeding (June 18, 2012) (Tentative). This meeting will be webcast live at the Web address--www.nrc.gov...

75 FR 42466 - Notice of Availability of Draft Environmental Impact Statement and Public Meeting for the AREVA...

Science.gov (United States)

2010-07-21

... need should be brought to the attention of Ms. Tarsha Moon at (800) 362-5642, ext. 6745, no later than..., located at One White Flint North, 11555 Rockville Pike (first floor), Rockville, Maryland 20852. Members..., air quality, geology and soils, water resources, ecological resources, noise, transportation, public...

75 FR 36447 - Notice of Availability of Draft Environmental Impact Statement and Public Meetings for the...

Science.gov (United States)

2010-06-25

... be brought to the attention of Ms. Jennifer Davis no later than July 8, 2010, to provide NRC staff...), located at One White Flint North, 11555 Rockville Pike (first floor), Rockville, Maryland, 20852. Members... occupational health, air quality, water resources, waste management, geology and soils, noise, ecology...

78 FR 70306 - Distribution of In Vitro Diagnostic Products Labeled for Research Use Only or Investigational Use...

Science.gov (United States)

2013-11-25

... Development (HFM-40), Center for Biologics Evaluation and Research (CBER), Food and Drug Administration, 1401...: Guidance for Industry and Food and Drug Administration Staff; Availability AGENCY: Food and Drug... Research (HFM-17), Food and Drug Administration, 1401 Rockville Pike, Suite 200N, Rockville, MD 20852-1448...

75 FR 35493 - Guidance for Industry on Systemic Lupus Erythematosus-Developing Medical Products for Treatment...

Science.gov (United States)

2010-06-22

...: The Food and Drug Administration (FDA) is announcing the availability of a guidance for industry... and Research (CBER), Food and Drug Administration, 1401 Rockville Pike, suite 200N, Rockville, MD...-0002, 301- 796-2280; or Stephen Ripley, Center for Biologics Evaluation and Research (HFM- 17), Food...

76 FR 30397 - Notice of Availability of Environmental Assessment and Finding of No Significant Impact for the...

Science.gov (United States)

2011-05-25

.... The NRC staff considered the following environmental resource areas in its evaluation: Air quality... concludes that the proposed action will not result in a significant effect on the quality of the human... North, 11555 Rockville Pike, Rockville, MD 20852. The PDR reproduction contractor will copy documents...

Mechanism for Prenatal LPS-Induced DA Neuron Loss

Science.gov (United States)

2005-03-01

Pike B, Root H, Rubenstein J, Boyer R, Stenroos ES, Chan- 26. drasekharappa S, Athanassiadou A, Papapetropoulos T, Johnson Yurek DM, Fletcher- Tumer A...diethylstilbestrol-induced cancers . Ann. N. Y. Acad. Sci. Capobianco, L., Battaglia, G., De Blasi, A., Nicoletti, F., Paparelli, 983, 161-169. A., 2004

75 FR 7489 - National Cancer Institute; Notice of Closed Meetings

Science.gov (United States)

2010-02-19

... review and evaluate grant applications. Place: Legacy Hotel and Meeting Center, 1775 Rockville Pike, Rockville, MD 20852. Contact Person: Lalita D. Palekar, PhD, Scientific Review Officer, Special Review and... Institute Special Emphasis Panel; NCI Cancer Nanotechnology Training (R25) and Career Development Award (K99...

Mentoring for Professional Geropsychology within a Doctoral Program

Science.gov (United States)

Knight, Bob G.

2011-01-01

Mentoring in doctoral programs in professional psychology has its roots in mentoring in science programs of all types. Professional psychology in general may suffer from conflating mentoring with clinical supervision. Using the Pikes Peak Model competencies as a framework, mentoring in attitudes, knowledge, and skills related to professional…

75 FR 15639 - Revision of the Requirements for Constituent Materials

Science.gov (United States)

2010-03-30

... preservative, except that a preservative need not be added to Yellow Fever Vaccine; Poliovirus Vaccine Live... and Research (CBER) or the Director of the Center for Drug Evaluation and Research (CDER), as... and Research (HFM-17), Food and Drug Administration, 1401 Rockville Pike, suite 200N, Rockville, MD...

76 FR 58312 - Sunshine Federal Register Notice

Science.gov (United States)

2011-09-20

.... PLACE: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of September 19, 2011 There are no meetings scheduled for the week of September 19, 2011... be webcast live at the Web address-- http://www.nrc.gov . Week of October 3, 2011--Tentative Thursday...

77 FR 3513 - Sunshine Federal Register Notice

Science.gov (United States)

2012-01-24

..., 27, 2012. PLACE: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of January 23, 2012 There are no meetings scheduled for the week of January 23... (Public Meeting). (Contact: Diane Sieracki, (301) 415-3297.) This meeting will be webcast live at the Web...

78 FR 4476 - Sunshine Act; Meeting Notice

Science.gov (United States)

2013-01-22

...: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of... live at the Web address--www.nrc.gov. 9:00 a.m. Briefing on Public Participation in NRC Regulatory Decision- Making (Public Meeting) (Contact: Lance Rakovan, 301-415-2589). This meeting will be webcast live...

78 FR 60331 - Sunshine Act Meeting

Science.gov (United States)

2013-10-01

..., October 7, 14, 21, 28, November 4, 2013. PLACE: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of September 30, 2013 There are no meetings scheduled..., 301-415-1711). This meeting will be webcast live at the Web address-- http://www.nrc.gov/ . Friday...

78 FR 77736 - Sunshine Act Meetings

Science.gov (United States)

2013-12-24

..., 2013, January 6, 13, 20, 27, 2014. PLACE: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of December 23, 2013 There are no meetings scheduled... Casks (Public Meeting); (Contact: Kevin Witt, 301-415-2145) This meeting will be webcast live at the Web...

78 FR 51234 - Sunshine Act Meetings

Science.gov (United States)

2013-08-20

...: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of... (Closed--Ex. 2 and 6). Tuesday, August 27, 2013 9:00 a.m. Briefing on NRC's Construction Activities (Public Meeting); (Contact: Michelle Hayes, 301-415-8375). This meeting will be webcast live at the Web...

78 FR 25320 - Sunshine Federal Register Notice

Science.gov (United States)

2013-04-30

.... PLACE: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of April 29, 2013 There are no meetings scheduled for the week of April 29, 2013. Week of...) (Public Meeting) (Contact: Kristin Davis, 301-287-0707) This meeting will be webcast live at the Web...

76 FR 77574 - Sunshine Act Meeting Notice

Science.gov (United States)

2011-12-13

..., 16, 2012. Place: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. Status: Public and closed. Week of December 12, 2011 Tuesday, December 13, 2011 9 a.m. Briefing on NFPA 805 Fire Protection (Public Meeting), (Contact: Alex Klein, (301) 415-2822.) This meeting will be webcast live at the...

78 FR 79021 - Sunshine Act Meeting Notice

Science.gov (United States)

2013-12-27

... 30, 2013, January 6, 13, 20, 27, February 3, 2014. PLACE: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of December 30, 2013 There are no... to Dry Casks (Public Meeting) (Contact: Kevin Witt, 301-415-2145). This meeting will be webcast live...

78 FR 8203 - Sunshine Act Meetings

Science.gov (United States)

2013-02-05

...: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of... Meeting) (Contact: Ken Karwoski, 301-415-2752) This meeting will be webcast live at the web address--www... Uranium Recovery (Public Meeting) (Contact: Bill von Till, 301-415-0598) This meeting will be webcast live...

77 FR 67838 - Sunshine Federal Register Notice

Science.gov (United States)

2012-11-14

.... PLACE: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of November 12, 2012 There are no meetings scheduled for the week of November 12, 2012. Week... Licensing Program (Public Meeting) (Contact: Jack McHale, 301-415-3254). This meeting will be webcast live...

77 FR 74883 - Sunshine Act Meeting Notice

Science.gov (United States)

2012-12-18

.... PLACE: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of December 17, 2012 There are no meetings scheduled for the week of December 17, 2012. Week... Calhoun (Public Meeting) (Contact: Michael Hay, 817-200-1527) This meeting will be webcast live at the Web...

78 FR 52990 - Sunshine Act Meetings Notice

Science.gov (United States)

2013-08-27

...: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of August 26, 2013 Monday August 26, 2013 2:00 p.m. Discussion of Management and Personnel Issues (Closed... Meeting) (Contact: Michelle Hayes, 301-415-8375). This meeting will be webcast live at the Web address...

78 FR 19332 - Sunshine Act Meeting

Science.gov (United States)

2013-03-29

...: Nuclear Regulatory Commission. DATE: Week of April 1, 2013 PLACE: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland STATUS: Public and Closed Week of April 1, 2013--Tentative Tuesday April... the Shaw Group, Inc. (Tentative) This meeting will be webcast live at the Web address-- www.nrc.gov...

Revisiting the Relationship between Institutional Rank and Student Engagement

Science.gov (United States)

Zilvinskis, John; Louis Rocconi

2018-01-01

College rankings dominate the conversation regarding quality in postsecondary education. However, the criteria used to rank institutions often have nothing to do with the quality of education students receive. A decade ago, Pike (2004) demonstrated that institutional rank had little association with student involvement in educational activities.…

10 CFR 20.1007 - Communications.

Science.gov (United States)

2010-01-01

... addressed to the Executive Director for Operations (EDO), and sent either by mail to the U.S. Nuclear... Pike, Rockville, Maryland; or, where practicable, by electronic submission, for example, via Electronic Information Exchange, or CD-ROM. Electronic submissions must be made in a manner that enables the NRC to...

77 FR 16278 - Advisory Committee on Reactor Safeguards: Notice of Meeting

Science.gov (United States)

2012-03-20

..., 11545 Rockville Pike, Rockville, Maryland. Thursday, April 12, 2012, Conference Room T2-B1, 11545....: Selected Chapters of the Safety Evaluation Report (SER) with Open Items Associated with the Calvert Cliffs... chapters of the NRC staff's Safety Evaluation Report (SER) with open items associated with the Calvert...

The Historical Background to the Pseudo-Senecan Octavia

Directory of Open Access Journals (Sweden)

Alenka Cedilnik

2011-07-01

The historical background of the play, the developments at the Roman court affecting Octavia, extends from the year 48, when Octavia's engagement to Lucius Junius Silanus was broken off in anticipation of Agrippina's marriage to Emperor Claudius early in 49, to be followed by a new engagement  to Agrippina's son, the later Emperor Nero, to 62, when Nero's planned marriage to Poppaea Sabina led to Octavia's exile and speedy execution on a false charge of adultery. In this temporal frame, the paper highlights the following milestones in Octavia's life: Agrippina's appointment of the philosopher Lucius Annaeus Seneca as tutor to her son Domitius (later known as Nero in 49 AD; Claudius' adoption of Agrippina's son on 25 February 50 AD; the proclamation of thirteen-year-old Nero's coming of age in March 51; Nero's marriage to Octavia in 53; the death of Claudius and Nero's rise to power in 54; Nero's murder of Britannicus in 55, and of his mother, Agrippina, four years later (59; Nero's affair with Poppaea Sabina, whom he had met in 58, and their wedding in 62, as well as Octavia's exile and execution in the same year. But despite the close bearing of these events on Octavia's fate, she is largely or completely ignored in most written sources on the topic. Rather than attempt to disentangle the many questions raised by Octavia's little known life, the paper thus gives a mere outline of her life story, trapped in the dynastic intrigues of the contemporary Roman court, which are luridly depicted in the tragedy Octavia, formerly attributed to Seneca.

21 CFR 312.145 - Guidance documents.

Science.gov (United States)

2010-04-01

... of Drug Information, Center for Drug Evaluation and Research, Food and Drug Administration, 10903 New... Evaluation and Research, Food and Drug Administration, 1401 Rockville Pike, Rockville, MD 20852-1448. [65 FR... 21 Food and Drugs 5 2010-04-01 2010-04-01 false Guidance documents. 312.145 Section 312.145 Food...

75 FR 71472 - Sunshine Act Notice

Science.gov (United States)

2010-11-23

...: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. Status: Public and Closed. Week of..., 2010--Tentative Tuesday, November 30, 2010 1 p.m. Briefing on Security Issues (Closed--Ex. 1). Week of... live at the Web address--http:// www.nrc.gov Week of December 20, 2010--Tentative Tuesday, December 21...

77 FR 40385 - Sunshine Act Meetings

Science.gov (United States)

2012-07-09

.... PLACE: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and closed. Week of July 9, 2012 Tuesday, July 10, 2012 9:30 a.m. Strategic Programmatic Overview of the... webcast live at the Web address: www.nrc.gov . Week of July 16, 2012--Tentative There are no meetings...

78 FR 6150 - Sunshine Act; Meeting Notice

Science.gov (United States)

2013-01-29

.... PLACE: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of January 28, 2013 Thursday, January 31, 2013 8:55 a.m. Affirmation Session (Public Meeting... be webcast live at the Web address--www.nrc.gov. 9:00 a.m. Briefing on Public Participation in NRC...

76 FR 14107 - Sunshine Federal Register Notice

Science.gov (United States)

2011-03-15

..., 2011. PLACE: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and closed. Week of March 14, 2011 There are no meetings scheduled for the week of March 14, 2011... meeting will be Webcast live at the Web address-- http://www.nrc.gov . Week of March 28, 2011--Tentative...

75 FR 1657 - Sunshine Act Meeting Notice

Science.gov (United States)

2010-01-12

.... Place: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. Status: Public and Closed. Week of January 11, 2010 Tuesday, January 12, 2010 9:30 a.m. Briefing on Office of Nuclear...: Marshall Kohen, 301-415-5436.) This meeting will be webcast live at the Web address-- http://www.nrc.gov...

75 FR 22166 - Sunshine Federal Register Notice

Science.gov (United States)

2010-04-27

...: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. Status: Public and Closed. Week of... (Public Meeting). (Contact: Michael Raddatz, 301-492-3108.) This meeting will be webcast live at the Web....) This meeting will be webcast live at the Web address-- http://www.nrc.gov . 10:30 a.m. Discussion of...

76 FR 388 - Sunshine Act Notice

Science.gov (United States)

2011-01-04

... Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of January 3, 2011... Tuesday, January 11, 2011 9:30 a.m. Discussion of Management Issues (Closed--Ex. 2). Week of January 17... Meeting). (Contact: Diane Sieracki, 301-415-3297.) This meeting will be Webcast live at the Web address...

77 FR 1521 - Sunshine Federal Register Notice

Science.gov (United States)

2012-01-10

...: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of January 9, 2012 Wednesday, January 11, 2012 10 a.m. Discussion of Management and Personnel Issues (Closed...) This meeting will be webcast live at the Web address: www.nrc.gov . Week of January 16, 2012--Tentative...

76 FR 17460 - SUNSHINE FEDERAL REGISTER NOTICE

Science.gov (United States)

2011-03-29

..., June 6, 13, 2011. PLACE: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of March 28, 2011 Tuesday, March 29, 2011 9 a.m. Briefing on Small... live at the Web address-- http://www.nrc.gov . Thursday, March 31, 2011 2:30 p.m. Discussion of...

78 FR 44179 - Sunshine Act Meetings

Science.gov (United States)

2013-07-23

...: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of... Hayes, 301-415-8375). This meeting will be webcast live at the Web address-- http://www.nrc.gov . 3:00 p.m. Briefing on NRC International Activities (Closed--Ex. 1 & 9) (Contact: Karen Henderson, 301-415...

78 FR 72931 - Sunshine Act Meeting Notice

Science.gov (United States)

2013-12-04

... 2, 9, 16, 23, 30, 2013, January 6, 2014. PLACE: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of December 2, 2013 There are no meetings scheduled for... Dry Casks (Public Meeting) (Contact: Kevin Witt, 301-415-2145). This meeting will be webcast live at...

76 FR 61403 - Sunshine Federal Register Notice

Science.gov (United States)

2011-10-04

...: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of...). (Contact: Karen Henderson, 301-415-0202.) This meeting will be webcast live at the Web address-- http://www..., 301-415-3172.) This meeting will be webcast live at the Web address-- http://www.nrc.gov . Wednesday...

78 FR 28258 - Sunshine Act Meetings

Science.gov (United States)

2013-05-14

...: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of...) (Public Meeting) (Contact: Kristin Davis, 301-287- 0707). This meeting will be webcast live at the Web... Security Issues (Closed--Ex. 1). Wednesday, May 29, 2013 9:00 a.m. Briefing on Results of the Agency Action...

77 FR 33252 - Sunshine Act Meeting

Science.gov (United States)

2012-06-05

.... PLACE: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and closed. Week of June 4, 2012 Thursday, June 7, 2012 9:25 a.m. Affirmation Session (Public Meeting... meeting will be webcast live at the Web address--www.nrc.gov. 9:30 a.m. Meeting with the Advisory...

76 FR 26775 - Sunshine Act Meeting Notice

Science.gov (United States)

2011-05-09

...: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of...-415-3951). This meeting will be webcast live at the Web address-- http://www.nrc.gov . Week of May 16...) (Public Meeting) (Contact: Rani Franovich, 301-415-1868). This meeting will be webcast live at the Web...

76 FR 8788 - Sunshine Federal Register Notice

Science.gov (United States)

2011-02-15

...: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of...); (Contact: Margie Kotzalas, 301-415-1727). This meeting will be Webcast live at the Web address-- http://www... be Webcast live at the Web address-- http://www.nrc.gov . Week of March 7, 2011--Tentative There are...

77 FR 70488 - Sunshine Federal Register Notice

Science.gov (United States)

2012-11-26

...: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland STATUS: Public and Closed. Week of... Meeting) (Contact: Jack McHale, 301-415-3254). This meeting will be webcast live at the Web address--www.nrc.gov. Wednesday, November 28, 2012 9:00 a.m. Discussion of Management and Personnel Issues (Closed...

76 FR 6837 - Sunshine Federal Register Notice

Science.gov (United States)

2011-02-08

...: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of...) (Contact: Shana Helton, 301-415-7198). This meeting will be webcast live at the Web address-- http://www... live at the Web address-- http://www.nrc.gov . Week of February 28, 2011--Tentative Tuesday, March 1...

78 FR 16893 - Sunshine Act Meetings

Science.gov (United States)

2013-03-19

...: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. [[Page... Flannery, 301-415-0223) This meeting will be webcast live at the Web address--www.nrc.gov. Week of April 8... Accident (Public Meeting) (Contact: William D. Reckley, 301- 415-7490) This meeting will be webcast live at...

75 FR 27841 - Advisory Committee on Reactor Safeguards (ACRS); Meeting of the ACRS Subcommittee on EPR

Science.gov (United States)

2010-05-18

... NUCLEAR REGULATORY COMMISSION Advisory Committee on Reactor Safeguards (ACRS); Meeting of the ACRS Subcommittee on EPR The ACRS Subcommittee on EPR will hold a meeting on May 21, 2010, Room T-2B1, 11545 Rockville Pike, Rockville, Maryland. The entire meeting will be open to public attendance. The agenda for...

Younger Children's Changing Self-Concepts: Boys and Girls from Preschool through Second Grade

Science.gov (United States)

Mantzicopoulos, Panayota

2006-01-01

The author investigated age- and gender-related changes in self-evaluative judgments of 87 children followed from preschool through 2nd grade. Focusing on cognitive, physical, and peer competence assessed by the Pictorial Scale of Perceived Competence and Social Acceptance (PSPCSA; S. Harter & R. Pike, 1984), the author tested PSPCSA subscale…

Models of prey capture in larval fish

NARCIS (Netherlands)

Drost, M.R.

1986-01-01

The food uptake of larval carp and pike is described from high speed movies with synchronous lateral and ventral views.

During prey intake by larval fishes the velocities of the created suction flow are high relative to their own size: 0.3 m/s for carp larvae of 6

10 CFR 21.5 - Communications.

Science.gov (United States)

2010-01-01

... this part must be addressed to the NRC's Document Control Desk, and sent by mail to the U.S. Nuclear... Pike, Rockville, Maryland; or, where practicable, by electronic submission, for example, Electronic Information Exchange, or CD-ROM. Electronic submissions must be made in a manner that enables the NRC to...

10 CFR 25.9 - Communications.

Science.gov (United States)

2010-01-01

... Director, Division of Facilities and Security, Mail Stop T7-D57, and sent either by mail to the U.S... Rockville Pike, Rockville, Maryland; or, where practicable, by electronic submission, for example, Electronic Information Exchange, or CD-ROM. Electronic submissions must be made in a manner that enables the...

Heroic Register, Oral Tradition, and the Alliterative Morte Arthure

Directory of Open Access Journals (Sweden)

Rebecca Richardson Mouser

2011-10-01

Full Text Available By employing an oral traditional approach to the text, this essay investigates how the use of alliteration and speech-acts in the _Alliterative Morte Arthure_ establishes a heroic register that marks the poem as participating in a tradition hearkening back to Old English heroic models. The text begins with an appeal to the audience to listen and to hear the tale, highlighting the importance of aurality and speech and signaling a way to “read” the poem that distinguishes it from Anglo-Norman literary tradition. By making such distinctions, this approach elucidates passages often deemed confusing, such as the two narrated deaths of the Roman Emperor Lucius.

Apian, VI, 31: A didactic introduction of topoi about Hispanic peoples in the historic narration

Directory of Open Access Journals (Sweden)

Enrique Hernández Prieto

2011-06-01

Full Text Available In this excerpt from his book, Appian relates the hypothetical facts occurred between Lucius Marcius, and a contingent of Hispanic mercenaries under orders of the Carthaginians during the Second Punic War. The author uses the historical background to introduce, with usual demands in a Roman military negotiation, a range of topics about the nature of indigenous and, in general, of the barbarian world. We believe that Appian could have advance typical events of the Celtiberian and Lusitanian wars. Besides decorating the story, its purpose would have been indoctrinate their readers, thoroughly Hellenized audience, on the nature of the Hispanic peoples, particularly the Celtiberian.

DIGITAL FLOOD INSURANCE RATE MAP DATABASE, PIKE COUNTY, AL

Data.gov (United States)

Federal Emergency Management Agency, Department of Homeland Security — The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary risk...

77 FR 20077 - Sunshine Federal Register Notice

Science.gov (United States)

2012-04-03

...: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of...-0223). This meeting will be webcast live at the Web address--www.nrc.gov. Week of April 9, 2012... webcast live at the Web address--www.nrc.gov. Week of April 16, 2012--Tentative There are no meetings...

75 FR 12583 - Sunshine Act; Meeting Notice

Science.gov (United States)

2010-03-16

...: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. Status: Public and Closed. Week of..., 301-415-3152). This meeting will be webcast live at the Web address-- http://www.nrc.gov . Week of...) (Contact: Jose Ibarra, 301-415-2581). This meeting will be webcast live at the Web address-- http://www.nrc...

75 FR 13800 - Sunshine Federal Register Notice

Science.gov (United States)

2010-03-23

...: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. Status: Public and Closed. Week of... Ibarra, 301-415-2581). This meeting will be webcast live at the Web address-- http://www.nrc.gov . Week... live at the Web address-- http://www.nrc.gov . Thursday, April 8, 2010 9:30 a.m. Briefing on Regional...

77 FR 52072 - Sunshine Act Meeting

Science.gov (United States)

2012-08-28

...: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of...) (Contact: Richard Correia, 301-251-7430). This meeting will be webcast live at the Web address--www.nrc.gov. Friday, September 14, 2012 11:00 a.m. Discussion of Management and Personnel Issues (Closed--Ex. 2 and 6...

77 FR 21601 - Sunshine Act Meeting

Science.gov (United States)

2012-04-10

.... PLACE: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of April 9, 2012 Tuesday, April 10, 2012 9 a.m. Briefing on the Final Report of the Blue...). This meeting will be webcast live at the Web address--www.nrc.gov Week of April 16, 2012--Tentative...

78 FR 19757 - Sunshine Act Meetings

Science.gov (United States)

2013-04-02

...: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland STATUS: Public and Closed Week of... Quash Subpoena Filed by the Shaw Group, Inc. (Tentative) This meeting will be webcast live at the Web... meeting will be webcast live at the Web address--www.nrc.gov Week of April 8, 2013--Tentative There are no...

77 FR 61644 - Sunshine Federal Register Notice

Science.gov (United States)

2012-10-10

...: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of...: Kevin Mattern, 301-492-3221). This meeting will be webcast live at the Web address--www.nrc.gov. Week of...); (Contact: Michael Hay, 817-200-1527). This meeting will be webcast live at the Web address--www.nrc.gov...

75 FR 15752 - Sunshine Act Notice

Science.gov (United States)

2010-03-30

...: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of...: Jose Ibarra, 301-415-2581.) This meeting will be webcast live at the Web address-- http://www.nrc.gov... live at the Web address-- http://www.nrc.gov . Thursday, April 8, 2010 9:30 a.m. Briefing on Regional...

77 FR 10575 - Sunshine Act Meetings

Science.gov (United States)

2012-02-22

...: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of... meeting will be webcast live at the Web address--www.nrc.gov. 9 a.m.--Briefing on Fort Calhoun (Public Meeting) (Contact: Jeff Clark, 817-860-8147). This meeting will be webcast live at the Web address--www...

78 FR 23960 - Sunshine Act Meetings

Science.gov (United States)

2013-04-23

...' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of April 22, 2013... Meeting) (Contact: Brett Rini, 301-251-7615). This meeting will be webcast live at the Web address--www.nrc.gov. 2:30 p.m. Discussion of Management and Personnel Issues (Closed--Ex. 2 and 6). Tuesday April...

78 FR 41128 - Sunshine Act Meetings

Science.gov (United States)

2013-07-09

...: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of July 8, 2013 Tuesday, July 9, 2013 9:30 a.m. Briefing on Security Issues (Closed--Ex. 1). Wednesday...: Karen Henderson, 301-415-0202). This meeting will be webcast live at the Web address--www.nrc.gov. 10:30...

78 FR 962 - Sunshine Act Meetings

Science.gov (United States)

2013-01-07

...: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of...: Michael Hay, 817-200-1527) This meeting will be webcast live at the Web address--www.nrc.gov Wednesday..., 2012) (Tentative) This meeting will be webcast live at the Web address--www.nrc.gov 9:00 a.m. Briefing...

78 FR 21171 - Sunshine Act Meetings

Science.gov (United States)

2013-04-09

...: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of... Meeting) (Contact: Brett Rini, 301-251-7615) This meeting will be webcast live at the Web address--www.nrc.gov. 2:30 p.m. Discussion of Management and Personnel Issues (Closed-- Ex. 2 and 6) Tuesday, April 23...

78 FR 18376 - Sunshine Act Meetings

Science.gov (United States)

2013-03-26

...: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of...-0223). This meeting will be webcast live at the Web address--www.nrc.gov. Week of April 8, 2013...) (Contact: Brett Rini, 301-251-7615). This meeting will be webcast live at the Web address--www.nrc.gov. 2...

76 FR 23341 - Sunshine Federal Register Notice

Science.gov (United States)

2011-04-26

.... PLACE: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of April 25, 2011 Thursday, April 28, 2011 9:30 a.m. Briefing on the Status of NRC Response...-415-1711) This meeting will be webcast live at the Web address-- http://www.nrc.gov . Week of May 2...

High Dose Atorvastatin Decreases Cellular Markers of Immune Activation Without Affecting HIV-1 RNA Levels: Results of a Double-Blind Randomized Placebo Controlled Clinical Trial

Science.gov (United States)

2011-02-15

allow for seasonal influenza vaccination . Study follow-up ended 4 weeks after completion of both phases. Randomization and Blinding Both placebo and drug...Reiss P, Sabin CA, et al. Class of antiretroviral drugs and the risk of myocardial infarction. N Engl J Med 2007; 356:1723–35. 4. Pike LJ. Rafts defined

40 CFR 81.306 - Colorado.

Science.gov (United States)

2010-07-01

... Stage Road to Gold Camp Road; north on Gold Camp Road to High Drive; north on High Drive to Lower Gold Camp Road; north on Lower Gold Camp Road to the Pike National Forest boundary; west along the Forest... (part) West of Kiowa Creek Attainment Boulder County (part) excluding Rocky Mountain National Park...

77 FR 74696 - Advisory Committee on Reactor Safeguards (ACRS); Meeting of the ACRS Subcommittee on AP-1000...

Science.gov (United States)

2012-12-17

... NUCLEAR REGULATORY COMMISSION Advisory Committee on Reactor Safeguards (ACRS); Meeting of the ACRS Subcommittee on AP-1000; Notice of Meeting The ACRS Subcommittee on AP-1000 will hold a meeting on January 18, 2013, Room T-2B1, 11545 Rockville Pike, Rockville, Maryland. The entire meeting will be open to public...

76 FR 6199 - Enhanced Weapons, Firearms Background Checks, and Security Event Notifications

Science.gov (United States)

2011-02-03

... comments, contact us directly at 301-415-1677. Hand deliver comments to: 11555 Rockville Pike, Rockville..., President Bush signed into law the Energy Policy Act of 2005 (EPAct), Public Law 109-58, 119 Stat. 594 (2005... locked containers which are sealed with a high-integrity, tamper-indicating device (TID) (e.g., ``ready...

Digital Shaded-Relief Image of Alaska

Science.gov (United States)

Riehle, J.R.; Fleming, Michael D.; Molnia, B.F.; Dover, J.H.; Kelley, J.S.; Miller, M.L.; Nokleberg, W.J.; Plafker, George; Till, A.B.

1997-01-01

Introduction One of the most spectacular physiographic images of the conterminous United States, and the first to have been produced digitally, is that by Thelin and Pike (USGS I-2206, 1991). The image is remarkable for its crispness of detail and for the natural appearance of the artificial land surface. Our goal has been to produce a shaded-relief image of Alaska that has the same look and feel as the Thelin and Pike image. The Alaskan image could have been produced at the same scale as its lower 48 counterpart (1:3,500,000). But by insetting the Aleutian Islands into the Gulf of Alaska, we were able to print the Alaska map at a larger scale (1:2,500,000) and about the same physical size as the Thelin and Pike image. Benefits of the 1:2,500,000 scale are (1) greater resolution of topographic features and (2) ease of reference to the U.S. Geological Survey (USGS) (1987) Alaska Map E and the statewide geologic map (Beikman, 1980), which are both 1:2,500,000 scale. Manually drawn, shaded-relief images of Alaska's land surface have long been available (for example, Department of the Interior, 1909; Raisz, 1948). The topography depicted on these early maps is mainly schematic. Maps showing topographic contours were first available for the entire State in 1953 (USGS, 1:250,000) (J.H. Wittmann, USGS, written commun., 1996). The Alaska Map E was initially released in 1954 in both planimetric (revised in 1973 and 1987) and shaded-relief versions (revised in 1973, 1987, and 1996); topography depicted on the shaded-relief version is based on the 1:250,000-scale USGS topographic maps. Alaska Map E was later modified to include hypsometric tinting by Raven Maps and Images (1989, revised 1993) as copyrighted versions. Other shaded-relief images were produced for The National Geographic Magazine (LaGorce, 1956; 1:3,000,000) or drawn by Harrison (1970; 1:7,500,000) for The National Atlas of the United States. Recently, the State of Alaska digitally produced a shaded-relief image

Genetic diversity of perch rhabdoviruses isolates based on the nucleoprotein and glycoprotein genes.

Science.gov (United States)

Talbi, Chiraz; Cabon, Joelle; Baud, Marine; Bourjaily, Maya; de Boisséson, Claire; Castric, Jeannette; Bigarré, Laurent

2011-12-01

Despite the increasing impact of rhabdoviruses in European percid farming, the diversity of the viral populations is still poorly investigated. To address this issue, we sequenced the partial nucleoprotein (N) and complete glycoprotein (G) genes of nine rhabdoviruses isolated from perch (Perca fluviatilis) between 1999 and 2010, mostly from France, and analyzed six of them by immunofluorescence antibody test (IFAT). Using two rabbit antisera raised against either the reference perch rhabdovirus (PRhV) isolated in 1980 or the perch isolate R6146, two serogroups were distinguished. Meanwhile, based on partial N and complete G gene analysis, perch rhabdoviruses were divided into four genogroups, A-B-D and E, with a maximum of 32.9% divergence (G gene) between isolates. A comparison of the G amino acid sequences of isolates from the two identified serogroups revealed several variable regions that might account for antigenic differences. Comparative analysis of perch isolates with other rhabdoviruses isolated from black bass, pike-perch and pike showed some strong phylogenetic relationships, suggesting cross-host transmission. Similarly, striking genetic similarities were shown between perch rhabdoviruses and isolates from other European countries and various ecological niches, most likely reflecting the circulation of viruses through fish trade as well as putative transfers from marine to freshwater fish. Phylogenetic relationships of the newly characterized viruses were also determined within the family Rhabdoviridae. The analysis revealed a genetic cluster containing only fish viruses, including all rhabdoviruses from perch, as well as siniperca chuatsi rhabdovirus (SCRV) and eel virus X (EVEX). This cluster was distinct from the one represented by spring viraemia of carp vesiculovirus (SVCV), pike fry rhabdovirus (PFRV) and mammalian vesiculoviruses. The new genetic data provided in the present study shed light on the diversity of rhabdoviruses infecting perch in

Global trends and factors associated with the illegal killing of elephants: A hierarchical bayesian analysis of carcass encounter data.

Science.gov (United States)

Burn, Robert W; Underwood, Fiona M; Blanc, Julian

2011-01-01

Elephant poaching and the ivory trade remain high on the agenda at meetings of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES). Well-informed debates require robust estimates of trends, the spatial distribution of poaching, and drivers of poaching. We present an analysis of trends and drivers of an indicator of elephant poaching of all elephant species. The site-based monitoring system known as Monitoring the Illegal Killing of Elephants (MIKE), set up by the 10(th) Conference of the Parties of CITES in 1997, produces carcass encounter data reported mainly by anti-poaching patrols. Data analyzed were site by year totals of 6,337 carcasses from 66 sites in Africa and Asia from 2002-2009. Analysis of these observational data is a serious challenge to traditional statistical methods because of the opportunistic and non-random nature of patrols, and the heterogeneity across sites. Adopting a bayesian hierarchical modeling approach, we used the proportion of carcasses that were illegally killed (PIKE) as a poaching index, to estimate the trend and the effects of site- and country-level factors associated with poaching. Important drivers of illegal killing that emerged at country level were poor governance and low levels of human development, and at site level, forest cover and area of the site in regions where human population density is low. After a drop from 2002, PIKE remained fairly constant from 2003 until 2006, after which it increased until 2008. The results for 2009 indicate a decline. Sites with PIKE ranging from the lowest to the highest were identified. The results of the analysis provide a sound information base for scientific evidence-based decision making in the CITES process.

Global trends and factors associated with the illegal killing of elephants: A hierarchical bayesian analysis of carcass encounter data.

Directory of Open Access Journals (Sweden)

Robert W Burn

Full Text Available Elephant poaching and the ivory trade remain high on the agenda at meetings of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES. Well-informed debates require robust estimates of trends, the spatial distribution of poaching, and drivers of poaching. We present an analysis of trends and drivers of an indicator of elephant poaching of all elephant species. The site-based monitoring system known as Monitoring the Illegal Killing of Elephants (MIKE, set up by the 10(th Conference of the Parties of CITES in 1997, produces carcass encounter data reported mainly by anti-poaching patrols. Data analyzed were site by year totals of 6,337 carcasses from 66 sites in Africa and Asia from 2002-2009. Analysis of these observational data is a serious challenge to traditional statistical methods because of the opportunistic and non-random nature of patrols, and the heterogeneity across sites. Adopting a bayesian hierarchical modeling approach, we used the proportion of carcasses that were illegally killed (PIKE as a poaching index, to estimate the trend and the effects of site- and country-level factors associated with poaching. Important drivers of illegal killing that emerged at country level were poor governance and low levels of human development, and at site level, forest cover and area of the site in regions where human population density is low. After a drop from 2002, PIKE remained fairly constant from 2003 until 2006, after which it increased until 2008. The results for 2009 indicate a decline. Sites with PIKE ranging from the lowest to the highest were identified. The results of the analysis provide a sound information base for scientific evidence-based decision making in the CITES process.

76 FR 44964 - Advisory Committee on Reactor Safeguards (ACRS); Meeting of the ACRS Subcommittee on U.S...

Science.gov (United States)

2011-07-27

... Subcommittee on U.S. Evolutionary Power Reactor; Notice of Meeting The ACRS Subcommittee on U.S. Evolutionary Power Reactor (U.S. EPR) will hold a meeting on August 18, 2011, Room T-2B3, 11545 Rockville Pike... the meeting, if possible, so that appropriate arrangements can be made. Thirty-five hard copies of...

Douglas-fir tussock moth- and Douglas-fir beetle-caused mortality in a ponderosa pine/Douglas-fir forest in the Colorado Front Range, USA

Science.gov (United States)

Jose F. Negron; Ann M. Lynch; Willis C. Schaupp; Vladimir Bocharnikov

2014-01-01

An outbreak of the Douglas-fir tussock moth, Orgyia pseudotsugata McDunnough, occurred in the South Platte River drainage on the Pike-San Isabel National Forest in the Colorado Front Range attacking Douglas-fir, Pseudotsuga menziesii (Mirb.) Franco. Stocking levels, species composition, and tree size in heavily and lightly defoliated stands were similar. Douglas-fir...

78 FR 49306 - Sunshine Act Meeting

Science.gov (United States)

2013-08-13

...' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of August 12...--Tentative Monday August 26, 2013 2:00 p.m. Discussion of Management and Personnel Issues (Closed--Ex. 2 and...) (Contact: Michelle Hayes, 301-415-8375) This meeting will be webcast live at the Web address--www.nrc.gov 3...

78 FR 36604 - Sunshine Act Meetings

Science.gov (United States)

2013-06-18

...' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of June 17, 2013... a.m. Briefing on Security Issues (Closed--Ex. 1) Wednesday, July 10, 2013 9:00 a.m. Briefing on NRC... web cast live at the Web address--www.nrc.gov. 10:30 a.m. Briefing on NRC International Activities...

75 FR 23822 - Sunshine Federal Register Notice

Science.gov (United States)

2010-05-04

... 3, 10, 17, 24, 31, June 7, 2010. Place: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. Status: Public and closed. Week of May 3, 2010 Tuesday, May 4, 2010 9:30 a.m. Briefing...-2673). This meeting will be Webcast live at the Web address-- http://www.nrc.gov . 10:30 a.m...

75 FR 65674 - Sunshine Federal Register Notice

Science.gov (United States)

2010-10-26

...: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of October 25, 2010 Tuesday, October 26, 2010 9:30 a.m. Briefing on Security Issues (Closed--Ex. 1) Week of... meeting will be webcast live at the Web address-- http://www.nrc.gov . Friday, November 5, 2010 9:30 a.m...

77 FR 18271 - Notice of Sunshine Act Meeting

Science.gov (United States)

2012-03-27

... 26, April 2, 9, 16, 23, 30, 2012. PLACE: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of March 26, 2012 Tuesday, March 27, 2012 8:55 a.m... meeting will be webcast live at the Web address--www.nrc.gov. 9 a.m. Briefing on License Renewal for...

77 FR 24543 - Sunshine Act Meeting Noice

Science.gov (United States)

2012-04-24

...: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of... webcast live at the Web address--www.nrc.gov. Week of April 30, 2012--Tentative Monday, April 30, 2012 9...: Kristin Davis, 301-492- 2208). This meeting will be webcast live at the Web address--www.nrc.gov. Week of...

Quantitation of ranaviruses in cell culture and tissue samples

DEFF Research Database (Denmark)

Holopainen, Riikka; Honkanen, Jarno; Jensen, Britt Bang

2011-01-01

; European sheatfish virus, ESV; Frog virus 3, FV3; Bohle iridovirus, BIV; Doctor fish virus, DFV; Guppy virus 6, GV6; Pike-perch iridovirus, PPIV; Rana esculenta virus Italy 282/I02, REV282/I02 and Short-finned eel ranavirus, SERV) were detected with the qPCR assay. In addition, two fish cell lines...

(Environmental investigation of ground water contamination at Wright-Patterson Air Force Base, Ohio)

Energy Technology Data Exchange (ETDEWEB)

1992-03-01

An environmental investigation of ground water conditions has been undertaken at Wright-Patterson Air Force Base (WPAFB), Ohio to obtain data to assist in the evaluation of a potential removal action to prevent, to the extent practicable, migration of the contaminated ground water across Base boundaries. Field investigations were limited to the central section of the southwestern boundary of Area C and the Springfield Pike boundary of Area B. Further, the study was limited to a maximum depth of 150 feet below grade. Three primary activities of the field investigation were: (1) installation of 22 monitoring wells, (2) collection and analysis of ground water from 71 locations, (3) measurement of ground water elevations at 69 locations. Volatile organic compounds including trichloroethylene, perchloroethylene, and/or vinyl chloride were detected in concentrations exceeding Maximum Contaminant Levels (MCL) at three locations within the Area C investigation area. Ground water at the Springfield Pike boundary of Area B occurs in two primary units, separated by a thicker-than-expected clay layers. One well within Area B was determined to exceed the MCL for trichloroethylene.

[Environmental investigation of ground water contamination at Wright-Patterson Air Force Base, Ohio]. Volume 5, Field Investigation report

Energy Technology Data Exchange (ETDEWEB)

1992-03-01

An environmental investigation of ground water conditions has been undertaken at Wright-Patterson Air Force Base (WPAFB), Ohio to obtain data to assist in the evaluation of a potential removal action to prevent, to the extent practicable, migration of the contaminated ground water across Base boundaries. Field investigations were limited to the central section of the southwestern boundary of Area C and the Springfield Pike boundary of Area B. Further, the study was limited to a maximum depth of 150 feet below grade. Three primary activities of the field investigation were: (1) installation of 22 monitoring wells, (2) collection and analysis of ground water from 71 locations, (3) measurement of ground water elevations at 69 locations. Volatile organic compounds including trichloroethylene, perchloroethylene, and/or vinyl chloride were detected in concentrations exceeding Maximum Contaminant Levels (MCL) at three locations within the Area C investigation area. Ground water at the Springfield Pike boundary of Area B occurs in two primary units, separated by a thicker-than-expected clay layers. One well within Area B was determined to exceed the MCL for trichloroethylene.

Büroohoone kui elus mäng / Urmas Oja

Index Scriptorium Estoniae

Oja, Urmas, 1981-2012

2005-01-01

Arvutimämgust inspireeritud Martin Aunini projekteeritud büroohoonest Tetris Tallinnas Mustamäel Mustamäe tee 46. 2005. a. valminud hoone fassaadid teeb eriliseks lasuurvärvidega rohe-kollaseks värvitud betoon. Projekteerija: EA Reng. Konstruktor: IB Pike. Infograafika: Andres Rohtla. Kommenteerivad M. Aunin ja Värvistuudio Parem Sein juhataja Margus Pootsmaa

Bjuro kak igrushka / Urmas Oja

Index Scriptorium Estoniae

Oja, Urmas, 1981-2012

2005-01-01

Arvutimämgust inspireeritud Martin Aunini projekteeritud büroohoonest Tetris Tallinnas Mustamäel Mustamäe tee 46. 2005. a. valminud hoone fassaadid teeb eriliseks lasuurvärvidega rohe-kollaseks värvitud betoon. Projekteerija: EA Reng. Konstruktor: IB Pike. Infograafika: Andres Rohtla. Kommenteerivad M. Aunin ja Värvistuudio Parem Sein juhataja Margus Pootsmaa

77 FR 74697 - Meeting of the ACRS, Subcommittee on U.S. Evolutionary Power Reactor; Notice of Meeting

Science.gov (United States)

2012-12-17

..., Subcommittee on U.S. Evolutionary Power Reactor; Notice of Meeting The ACRS Subcommittee on U.S. Evolutionary Power Reactor (U.S. EPR) will hold a meeting on January 17, 2013, Room T-2B1, 11545 Rockville Pike... be made. Thirty-five hard copies of each presentation or handout should be provided to the DFO thirty...

78 FR 38087 - Sunshine Act Meetings

Science.gov (United States)

2013-06-25

...' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of June 24, 2013..., 2013 9:30 a.m. Briefing on Security Issues (Closed--Ex. 1) Wednesday, July 10, 2013 9:00 a.m. Briefing...). This meeting will be webcast live at the Web address--www.nrc.gov. 10:30 a.m. Briefing on NRC...

78 FR 35071 - Sunshine Federal Register Notice

Science.gov (United States)

2013-06-11

...: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. Week of..., 2013 9:30 a.m. Briefing on Security Issues (Closed--Ex. 1) Wednesday, July 10, 2013 9:00 a.m. Briefing...) This meeting will be webcast live at the Web address-- http://www.nrc.gov . 10:30 a.m. Briefing on NRC...

77 FR 25761 - Sunshine Act Meetings

Science.gov (United States)

2012-05-01

...: Commissioners' Conference Room, 11555 Rockville Pike, Rockville, Maryland. STATUS: Public and Closed. [[Page... webcast live at the Web address--www.nrc.gov. Week of May 7, 2012--Tentative Friday, May 11, 2012 9:00 a.m... Quichocho, 301-415-0209). This meeting will be webcast live at the Web address--www.nrc.gov. Week of May 14...

75 FR 16203 - Advisory Committee on Reactor Safeguards (ACRS); Meeting of the ACRS Subcommittee on EPR; Notice...

Science.gov (United States)

2010-03-31

... hold a meeting on April 20-21, 2010, at 11545 Rockville Pike, T2- B1, Rockville, Maryland. The entire... review Chapters 4, 5 and 17 of the Safety Evaluation Report with Open Items associated with the staff's... a.m.-5 p.m. The Subcommittee will review Chapter 12 of the Safety Evaluation Report with Open Items...

76 FR 30404 - Advisory Committee On Reactor Safeguards; Meeting

Science.gov (United States)

2011-05-25

... Room T2-B1, 11545 Rockville Pike, Rockville, Maryland 8:30 a.m.-8:35 a.m.: Opening Remarks by the ACRS... Alloy Cladding.'' 10:45 a.m.-11:45 a.m.: Revised Safety Evaluation Report Associated with the License... to the safety evaluation report associated with the license renewal application for the Hope Creek...

Septímio Severo e a Consecratio de Pertinax: rituais de morte e poder Septimius Severus and the Pertinaces' Consecratio: death and power rithuals

Directory of Open Access Journals (Sweden)

Ana Teresa Marques Gonçalves

2007-01-01

Full Text Available Nosso objetivo neste artigo é analisar a cerimônia de deificação do Imperador Pertinax, que ocorreu após a sua morte, como definia a tradição romana, e foi promovida pelo seu sucessor, o Imperador Lúcio Septímio Severo. Esta cerimônia encontra-se descrita com riqueza de detalhes na obra de Dion Cássio, intitulada História Romana.Our aim is analyze the Emperor Pertinaces' deification cerimony, which occurred after his death, as defined by the Roman tradition, promoted by his successor, the Emperor Lucius Septimius Severus. That ceremony is described in detail in Dio Cassius' work, Roman History.

Multi-Scale Particle Size Distributions of Mars, Moon and Itokawa based on a time-maturation dependent fragmentation model

Science.gov (United States)

Charalambous, C. A.; Pike, W. T.

2013-12-01

We present the development of a soil evolution framework and multiscale modelling of the surface of Mars, Moon and Itokawa thus providing an atlas of extra-terrestrial Particle Size Distributions (PSD). These PSDs are profoundly based on a tailoring method which interconnects several datasets from different sites captured by the various missions. The final integrated product is then fully justified through a soil evolution analysis model mathematically constructed via fundamental physical principles (Charalambous, 2013). The construction of the PSD takes into account the macroscale fresh primary impacts and their products, the mesoscale distributions obtained by the in-situ data of surface missions (Golombek et al., 1997, 2012) and finally the microscopic scale distributions provided by Curiosity and Phoenix Lander (Pike, 2011). The distribution naturally extends at the magnitudinal scales at which current data does not exist due to the lack of scientific instruments capturing the populations at these data absent scales. The extension is based on the model distribution (Charalambous, 2013) which takes as parameters known values of material specific probabilities of fragmentation and grinding limits. Additionally, the establishment of a closed-form statistical distribution provides a quantitative description of the soil's structure. Consequently, reverse engineering of the model distribution allows the synthesis of soil that faithfully represents the particle population at the studied sites (Charalambous, 2011). Such representation essentially delivers a virtual soil environment to work with for numerous applications. A specific application demonstrated here will be the information that can directly be extracted for the successful drilling probability as a function of distance in an effort to aid the HP3 instrument of the 2016 Insight Mission to Mars. Pike, W. T., et al. "Quantification of the dry history of the Martian soil inferred from in situ microscopy

American River Watershed Investigation, California. Volume 6. Appendix S. Part 1

Science.gov (United States)

1991-12-01

rainbow trout Salmo qairdneri hardhead Mylopharodon conocephalus Chinook salmon Oncorhynchus tshawvtscha brown trout Salmo trutta 0 34 Disturbance of...Department of Fish and Game Stream Survey 1938 Sacramento pike Pvtocheilus grandis hardhead Mylopharodon conocephalus roach Hesperoleucas symmetricus...Lazuli bunting Passerina amoena R,G,W,F Rufous-sided towhee Pipilo erythrophthalmus C,U,F Brown towhee Pipilo fuscus C,U,F Rufous-crowned sparrow

The Nigrostriatal Dopamine System and Methamphetamine: Roles for Excitotoxicity and Environmental, Metabolic and Oxidative Stress

Science.gov (United States)

2005-07-01

K. (1995) Methamphetamine -induced hyperthermia and dopaminergic neurotoxicity in mice: pharmacological profile of protective and nonprotective agents...glutamate receptors is protective against methamphetamine neurotoxicity . JNeurosci 22, 2135-2141. Beer R., Franz G., Srinivasan A., Hayes R. L., Pike B. R...1992) The neurotoxic effects of methamphetamine on 5-hydroxytryptamine and dopamine in brain: evidence for the protective effect of chlormethiazole

Ülemiste järve esitlev elegantne hotell : Lennujaama tee 2, Tallinn = An Elegant Hotel that Presents Lake Ülemiste : Lennujaama tee 2, Tallinn / Urmas Oja

Index Scriptorium Estoniae

Oja, Urmas, 1981-2012

2004-01-01

Aerofloti hotelli kohale ja osalt vana maja konstruktsioonidele ehitatud Ülemiste hotellist. Hotelli ees on parkla ja purskkaevuga väljak. Projekteerija: EA Reng, projektijuht Taavi Turvas. Arhitekt Martin Aunin. Sisekujundus: Meelis Press, Hillar Mänd (M. Pressi Arhitektuuribüroo). Konstruktsioonid: Inseneribüroo Pike. Ehitaja: FKSM. I, II ja III korruse plaan, 3 välis- ja 5 sisevaadet

Karakteriga hotell - L'Ermitage : Toompuiestee 19, Tallinn = A Hotel with Character - L'Ermitage : Toompuiestee 19, Tallinn / Regina Viljasaar

Index Scriptorium Estoniae

Viljasaar, Regina

2004-01-01

Hoone esifassaad on kaetud tumepruuniks patineerunud vasega, hoovipoolne külg on roosa. Uuenduslikud on õhukesed põrandaküttega vahelaed. Projekteerija: Arhitektuuribüroo Pluss. Autor Indrek Allmann. Konstruktor: Inseneribüroo Pike. Sisekujundaja Tatjana Jakobson. I korruse avaliku tsooni kujundas Pille Lausmäe. Projekt 2003, valmis 2004. I ja tüüpkorruse plaan, sisevaade, 5 välisvaadet

The United States Army and the Sergeant Problem: The Army’s Systemic Inability to Produce Enough Sergeants and a Proposal to Fix it

Science.gov (United States)

2014-04-23

Intelligence Agency https://www.cia.gov/ library / publications/the-world-factbook/index.html (accessed November 24, 2013); John Pike, "Royal Thai Army" http...accessed November 24, 2013); Barbara LePoer, Thailand: A Country Study, Area Handbook Series (Washington, DC: Library of Congress, 1989), 246, 259...accessed December 22, 2013); "Professional Leadership Programs: Apprenticeship, Internship, and Multicultural Fellowship", http

Diel and seasonal movements by adult Sacramento pikeminnow (Ptychocheilus grandis) in the Eel River, northwestern California

Science.gov (United States)

Bret C. Harvey; Rodney J. Nakamoto

1999-01-01

Abstract - In late summer and fall, radio-tagged adult Sacramento pike-minnow (Ptychocheilus grandis) at three sites in the Eel River of northwestern California moved more at night than during the day. Fish moved up to 535 m at night and returned to their original positions the following morning. Adult Sacramento pikeminnow at all sites occupied only pools during the...

Public attitudes to organ donation in South Africa | Pike | South ...

African Journals Online (AJOL)

Public attitudes to organ donation may be influenced by cultural beliefs as well as racial prejudices and superstitions. In South Africa we are able to examine these issues from both a Firstand a Third-World perspective. In this study the attitudes of 1 299 urban white, 625 rural black and 826 urban black South Africans were ...

A Fast-Starting Robotic Fish

Science.gov (United States)

Modarres-Sadeghi, Yahya; Watts, Matthew; Conte, Joe; Hover, Franz; Triantafyllou, Michael

2009-11-01

We have built a simple mechanical system to emulate the fast-start performance of fish. The system consisted of a thin metal beam covered by a urethane rubber fish body. The body form of the mechanical fish in this work was modeled from a pike species, which is the most successfully studied fast-start specialist species. The mechanical fish was held in curvature and hung in water by two restraining lines, which were simultaneously released by pneumatic cutting mechanisms. The potential energy in the beam was transferred into the fluid, thereby accelerating the fish, similar to a pike. We measured the resulting velocity and acceleration, as well as the efficiency of propulsion for the mechanical fish model and also ran a series of flow visualization tests to observe the resulting flow pattern. We also studied the influence of stiffness and geometry of the tail on the efficiency of propulsion and flow pattern. The hydrodynamic efficiency of the fish, calculated by the transfer of energy, was around 10%. Flow visualization of the mechanical fast-start wake was also analyzed, showing that the acceleration is associated with the fast movement of an intense vortex in a near-lateral direction.

THE NEED FOR DIVERSIFICATION IN FISH FARMING PRODUCTION

Directory of Open Access Journals (Sweden)

Krešimir Pažur

1999-06-01

Full Text Available One of the characteristics of developed economies in the world is a very rich and diversified offer of goods. There are many products of different assortment, of different quality and price on the market. In keeping with the marketing conception, the production is trying to satisfy all potential consumers. Croatian freshwater fish farming has not yet reached this stage. The assortment is very limited and includes mostly carp (up to 80%, Californian trout (up to 10%, grass carp (around 4%, wels, pike-perch and pike together up to 2.70%, while the rest are commercially insignificant and uninteresting fish species. In the last few years, an increasingly important type of consumers has emerged on the market sporting anglers whose importance is growing and bringing totally new, specific demands that the fish ponds at the moment cannot meet, except maybe in marginal quantities. There is a categorical imperative of a fast adjustment of the production assortment of our fishing farms to the tendencies in the nourishment of the population in developed countries that can also be observed in our country and to the demands and needs of sporting anglers.

Situation Tracking in Large Data Streams

Science.gov (United States)

2015-02-01

Pike, R. 1989: Different Ways to Cue a Coherent Memory System: A Theory for Episodic , Semantic , and Procedural Tasks. Psychological Review, 96(2), 208...to extract general concept models, such as Latent Semantic Indexing. This technique generally extracts a single topic model, and does not extract a...2001. Semantic leaps: frame-shifting and conceptual blending in meaning construction. Cambridge University Press. Humphreys, M. S, Bain, J. D

Extremist Religious Ideologies and Military Strategy

Science.gov (United States)

2006-06-16

on bogus tips anonymously supplied by the IRA disinformation operations. Unfortunately, the Royal Ulster Constabulary’s intelligence-gathering...2005. 43John Pike, Federation of American Scientist, Intelligence Resource Services, Serb Volunteer Guard [ SDG / SSJ] “Arkan’s Tigers;” 1 February...learn more about the religion of Islam and the various fundamentalist sects within Islam. This knowledge should be disseminated throughout the chain

Pro Kapital äri- ja büroohoone

Index Scriptorium Estoniae

1997-01-01

"Eesti Kaabli" tööstushoone ümberehitus. Neljakorruselise hoone I korrusel paiknevad äripinnad, ülejäänud kolm korrust on renditud büroodele. Majas on 12 korterit. Projekteerija : AS EA Reng, 1996-1997. Arhitektid I. Klammer, R. Rass, G. Tamini. Konstruktsioonid : OÜ Pike. Eriosad : AS Aksiaal, AS Fingal. Peatöövõtja : AS Koger & Sumberg Tallinn. Ripplaed : EH Inlook OÜ. Valmis 1997.

Intrigues in the Court of Buda: Political Dissimulation and the Palatine Genre in «El cuerdo loco» by Lope de Vega

Directory of Open Access Journals (Sweden)

Adrián J. Sáez

2015-01-01

Full Text Available One of the «Hungarian comedies» by Lope is El cuerdo loco, which constitutes one of the few examples where the resource of the pretended madness mask interweaves with a series of political intrigues. In this way, prince Antonio’s strategy of pretending to be fool is an example of dissimulation which could be understood as a sign of prudence and, at the same time, could be connected with the political theory of the moment, which debates some Maquiavelian ideas. This work studies the development of this tactic in the play as well as some models (king David, Lucius Junius Brutus which may have inspired the poet. It also outlines the generic definition of a serious palatine comedy.

Hair mercury levels versus freshwater fish consumption in household members of Swedish angling societies

International Nuclear Information System (INIS)

Johnsson, Cecilia; Saellsten, Gerd; Schuetz, Andrejs; Sjoers, Anna; Barregaard, Lars

2004-01-01

Hair mercury levels were determined in 143 individuals from households of members in angling societies in an area of Sweden with many lakes that have freshwater fish with relatively high mercury levels. Thus, the individuals had a potentially high intake of methyl mercury. The mean mercury concentration of pike and perch was approximately 0.7 μg/g. One-third of the subjects consumed these freshwater fish at least once a week. As could be expected, there was a clear increase in hair Hg with reported freshwater fish consumption (P<0.001). The median mercury level in hair was 0.9 μg Hg/g for the whole group, and for those who reported consumption of freshwater fish at least once a week it was 1.8 μg/g. The highest hair mercury level was 18.5 μg/g, in a man who consumed pike and perch several times per week. Men had higher hair Hg than women, also when stratified for fish consumption. This was verified in 32 couples, of which the man and woman consumed the same fish and reported the same consumption. The median hair mercury level in these 32 couples was 1.3 μg/g for men and 0.8 μg/g for women (P=0.002). About half of the subjects had hair mercury exceeding 1 μg/g, corresponding to the reference dose (RfD) of 0.1 μg of mercury per kilogram body weight set by the US Environmental Protection Agency. Although the RfD applies to all populations, the most at-risk group at these levels is pregnant women. There were only 2 women (of 12) of fertile age with hair mercury above 1 μg/g. In Sweden pregnant women are advised not to eat perch and pike at all during pregnancy. Since fish is rich in many important nutrients, it is unsatisfactory that fish consumption must be restricted, and thus there is a need to reduce mercury levels in fish

A salmonid EST genomic study: genes, duplications, phylogeny and microarrays

Directory of Open Access Journals (Sweden)

Brahmbhatt Sonal

2008-11-01

Full Text Available Abstract Background Salmonids are of interest because of their relatively recent genome duplication, and their extensive use in wild fisheries and aquaculture. A comprehensive gene list and a comparison of genes in some of the different species provide valuable genomic information for one of the most widely studied groups of fish. Results 298,304 expressed sequence tags (ESTs from Atlantic salmon (69% of the total, 11,664 chinook, 10,813 sockeye, 10,051 brook trout, 10,975 grayling, 8,630 lake whitefish, and 3,624 northern pike ESTs were obtained in this study and have been deposited into the public databases. Contigs were built and putative full-length Atlantic salmon clones have been identified. A database containing ESTs, assemblies, consensus sequences, open reading frames, gene predictions and putative annotation is available. The overall similarity between Atlantic salmon ESTs and those of rainbow trout, chinook, sockeye, brook trout, grayling, lake whitefish, northern pike and rainbow smelt is 93.4, 94.2, 94.6, 94.4, 92.5, 91.7, 89.6, and 86.2% respectively. An analysis of 78 transcript sets show Salmo as a sister group to Oncorhynchus and Salvelinus within Salmoninae, and Thymallinae as a sister group to Salmoninae and Coregoninae within Salmonidae. Extensive gene duplication is consistent with a genome duplication in the common ancestor of salmonids. Using all of the available EST data, a new expanded salmonid cDNA microarray of 32,000 features was created. Cross-species hybridizations to this cDNA microarray indicate that this resource will be useful for studies of all 68 salmonid species. Conclusion An extensive collection and analysis of salmonid RNA putative transcripts indicate that Pacific salmon, Atlantic salmon and charr are 94–96% similar while the more distant whitefish, grayling, pike and smelt are 93, 92, 89 and 86% similar to salmon. The salmonid transcriptome reveals a complex history of gene duplication that is

Proterometra epholkos sp. n. (Digenea: Azygiidae) from Terrapin Creek, Alabama, USA: molecular characterization of life cycle, redescription of Proterometra albacauda, and updated lists of host and geographic locality records for Proterometra spp. in North America.

Science.gov (United States)

Womble, Matthew R; Orélis-Ribeiro, Raphael; Bullard, Stephen A

2015-02-01

localities and hosts concomitant with neotype designations. P. macrostoma seems a repository for conspicuous, furcocystocercous cercariae shed from freshwater prosobranchs in eastern North American rivers and streams. The specific epithet "pinguis" associated with specimens purportedly infecting Esox lucius and deposited by JF Mueller is a nomen nudum. Proterometra guangzhouensis, Proterometra sillagae, Proterometra brachyuran, and Proterometra lamellorchis are incertae sedis. Significant barriers to characterizing biodiversity and distributions (host range and geographic distribution) of Proterometra spp. comprise a paucity of data on adult morphology, dubious species-level identification or a lack of information regarding prosobranch hosts, lack of molecular data for putative comparisons among fluke 'strains' and species as well as between cercariae and adults, lack of consistency in terminology, and indeterminate homology for key morphological features. Uncertainty about the providence and identity of, or absence of, accessioned museum materials of P. macrostoma, Proterometra catenaria, and P. hodgesiana together represent another fundamental problem. The present study comprises the first description of a new species of Proterometra in nearly 20years, first report of a species of the genus from the Coosa River (Mobile-Tensaw River Basin) and from these host species, and first use of molecular sequence data to elucidate a life cycle for a species of Proterometra. Copyright © 2014 Elsevier Ireland Ltd. All rights reserved.

Annual Report of the Chief of Engineers, U.S. Army, on Civil Works Activities 1961. Volume 1

Science.gov (United States)

1961-01-01

dollars) Classification Total Active De - Ink Total Active De - In- ferred active ferred active Navigation..------------------ 2,604 2,450 42 112 6,138...Sioux City, Iowa.... New York and New Jersey Channels, N.Y. and N.J.. Pike Island Locks and Dam, Ohio River, W. Va..... Playa Del Rey Inlet and Harbor...Jun 61 -1965 Do. Hall Meadow Brook, Conn __ . ___------- - Oct 60 1962 Reservoir. Hunt and Lima Lake Drainage District, Illinois

Recommendations for a barrier island breach management plan for Fire Island National Seashore, including the Otis Pike High Dune Wilderness Area, Long Island, New York

Science.gov (United States)

Williams, S. Jeffress; Foley, Mary K.

2007-01-01

The U.S Army Corps of Engineers, New York District is developing engineering plans, including economic costs and benefits, for storm damage reduction along an 83 mile stretch of the coastal barrier islands and beaches on the south shore of Long Island, NY from Fire Island Inlet east to the Montauk Point headland. The plan, expected to include various alternatives for storm protection and erosion mitigation, is referred to as the Fire Island to Montauk Point Reformulation Plan (FIMP). These plans are expected to follow the Corps of Engineers’ Environmental Operating Principles striving for long term environmental sustainability and balance between environmental protection and protection of human health and property. Fire Island National Seashore (FIIS), a 19,579 acre unit of the National Park System includes a 32 mile long coastal barrier island located within the FIMP project area. A seven-mile section of the park, Otis Pike Fire Island High Dune Wilderness Area, is also a designated Federal Wilderness Area. The FIIS includes not only the barrier island and sand dunes, but also several islands, sand flats and wetlands landward of the barrier, submerged parts of Great South Bay shoreface, extending approximately 4,000 feet into the bay with the inner shelf region extending approximately 1,000 feet seaward of the Fire Island shoreline. The Fire Island barrier islands, a sand-starved system dominated by highly dynamic processes, are struggling to maintain their integrity in the face of sea-level rise and storms. Adding to the dilemma is that development on the barriers and the mainland has increased greatly during the past 50 years. As such, managers and decision makers in federal agencies, state agencies and local governments are challenged to balance tradeoffs between protection of lives and property, public access and long term conservation of natural habitats and processes and the plants and animals that depend on these habitats. National Park Service (NPS

Environmental monitoring of the La Grande complex (2003-2004) : evolution of mercury levels in the flesh of fish

International Nuclear Information System (INIS)

Therrien, J.; Schetagne, R.

2005-11-01

The results of surveys conducted to assess the duration of temporary mercury levels in piscivorous species in the La Grande Complex were presented. A 2003 survey conducted in the easter sector and a 2004 survey conducted in the western sector of the complex showed that for non-piscivorous fishes of standardized length, a return to mean natural mercury levels will be achieved between 10 and 20 years after impounding. For piscivorous fishes, the evolution pattern of the mean mercury levels suggested that a return to background levels will occur after 20 to 30 years. Mercury levels for northern pike in the Robert-Bourassa Reservoir are expected to return to normal levels after 30 to 35 years. The surveys indicated that mean mercury levels in non-piscivorous fishes were often higher immediately below the La Grande generating stations. Similar observations were made for northern pike and lake trout downstream of the generating stations in the eastern sector of the complex. Mean mercury levels were significantly higher for fishes in the complex than fishes in the natural lakes of the region. Results of the surveys suggested that additional consumption restrictions for piscivorous fishes in the reservoirs are needed. Consumption guidelines for varieties of non-piscivorous and piscivorous fishes from the complex were included

Environmental monitoring of the La Grande complex (2003-2004) : evolution of mercury levels in the flesh of fish; Reseau de suivi environnemental du complexe La Grande (2003-2004) : evolution du mercure dans la chair des poissons

Energy Technology Data Exchange (ETDEWEB)

Therrien, J. [Genivar SEC, Quebec, PQ (Canada); Schetagne, R. [Hydro-Quebec Production, Baie-Comeau, PQ (Canada)

2005-11-15

The results of surveys conducted to assess the duration of temporary mercury levels in piscivorous species in the La Grande Complex were presented. A 2003 survey conducted in the easter sector and a 2004 survey conducted in the western sector of the complex showed that for non-piscivorous fishes of standardized length, a return to mean natural mercury levels will be achieved between 10 and 20 years after impounding. For piscivorous fishes, the evolution pattern of the mean mercury levels suggested that a return to background levels will occur after 20 to 30 years. Mercury levels for northern pike in the Robert-Bourassa Reservoir are expected to return to normal levels after 30 to 35 years. The surveys indicated that mean mercury levels in non-piscivorous fishes were often higher immediately below the La Grande generating stations. Similar observations were made for northern pike and lake trout downstream of the generating stations in the eastern sector of the complex. Mean mercury levels were significantly higher for fishes in the complex than fishes in the natural lakes of the region. Results of the surveys suggested that additional consumption restrictions for piscivorous fishes in the reservoirs are needed. Consumption guidelines for varieties of non-piscivorous and piscivorous fishes from the complex were included.

Thermal tolerance of the invasive Belonesox belizanus, pike killifish, throughout ontogeny.

Science.gov (United States)

Kerfoot, James Roy

2012-06-01

The goal of this study was to characterize the variability of thermal tolerances between life-history stages of the invasive Belonesox belizanus and attempt to describe the most likely stage of dispersal across south Florida. In the laboratory, individuals were acclimated to three temperatures (20, 25, or 30°C). Upper and lower lethal thermal limits and temperatures at which feeding ceased were measured for neonates, juveniles, and adults. Thermal tolerance polygons were developed to represent the thermal tolerance range of each life-history stage. Results indicated that across acclimation temperatures upper lethal thermal limits were similar for all three stages (38°C). However, minimum lethal thermal limits were significantly different at the 30°C acclimation temperature, where juveniles (9°C) had an approximately 2.0°C and 4.0°C lower minimum lethal thermal limit compared with adults and neonates, respectively. According to thermal tolerance polygons, juveniles had an average tolerance polygonal area almost 20°C(2) larger than adults, indicating the greatest thermal tolerance of the three life-history stages. Variation in cessation of feeding temperatures indicated no significant difference between juveniles and adults. Overall, results of this study imply that juvenile B. belizanus may be equipped with the physiological flexibility to exercise habitat choice and reduce potential intraspecific competition with adults for limited food resources. Given its continued dispersal, the minimum thermal limit of juveniles may aid in continued dispersal of this species, especially during average winter temperatures throughout Florida where juveniles could act to preserve remnant populations until seasonal temperatures increase. © 2012 WILEY PERIODICALS, INC.

Project SQUID: Summary and Recommendations. Volume 3

Science.gov (United States)

1947-06-30

decomposing it thermlly is needed. Such a study mine which is the rate controlling reaction, and should be undertaken. i whether the energy relationships are... tinder dbasi- in vohume on combustion, and combustion efficiency circumstances. But no one has yet determined t- are at present treated in separate... tinder prime contract W-30.069-ORD.3182 Aeromarine Co., 5201 Navy Bureau of PD 21294.47 Under Pulse jet developnwit. Old Springfield Pike, Aeronautics

Naval Medical Research and Development News. Volume 8, Issue 7, July 2016

Science.gov (United States)

2016-07-01

with the pathogen. The virus can be spread by infected people, contaminated food or water, or contact with contaminated surfaces, making...effectiveness to support approval by the U.S. Food and Drug Administration for widespread use among other U.S. military populations and civilians. NHRC has... Malaysia aims to address some of these unanswered questions. Led by Lt. Brian L. Pike of the Naval Medical Research Center – Asia (NMRC- A) based in

Operational Design: Distilling Clarity from Complexity for Decisive Action

Science.gov (United States)

2012-08-01

de Hartog, Genghis Khan, 86–98. 3. Greene , 33 Strategies of War, 181. 4. US Army, Army Strategic Planning Guidance, 14–15. 5. Thayer, War without...the Course of World His- tory. New York: Universe Publishing, 2011. Greene , Robert. The 33 Strategies of War. New York: Penguin, 2007. Harari, Michal...Piaget, Jean, and Bärbel Inhelder. Memory and Intelligence. London: Routledge and Kegan Paul, 1973. Pike, Douglas. The Viet-Cong Strategy of Terror

Annotated Bibliography for Lake Erie. Volume I. Biological,

Science.gov (United States)

1974-10-01

maculosa Le Sueur; calico bass, or Lake Erie bass, Pomoxis sparoides Lacepede. (SM) 52. Reardslee, Clark S. 1944. Bonapart’s gull on the Niagara...of the burbot, Lota lota maculosa (LeSueur), in Lake Erie. Trans. Am. Fish. Soc. 80:163-173. Growth studies were made on 2,329 Lake Erie burbot...almo -- hystus; whitefish, oe onus albus; common shad salmon, Coregonus a upelformis; aobony pike, Lepisosteus bison; spotted burbot, Lota maculosa ; and

Lower Flathead System Fisheries Study, 1984 Annual Report.

Energy Technology Data Exchange (ETDEWEB)

Darling, James E.; Pajak, Paul; Wunderlich, Mary P.

1984-12-01

This study was undertaken to assess the effects of Kerr Dam operations on the fisheries of the Lower Flathead System. Supported by Bonneville Power Administration funding, and conducted by the Confederated Salish and Kootenai Tribes, the study began in December of 1982 and is scheduled for completion in December of 1987. This report covers the 1983-84 field season and includes the status of target fish species populations in the Flathead River and tributaries, and initial work in South Bay of Flathead Lake. Additionally it addresses how Kerr operations may effect the reproduction of salmonids and northern pike. Combined trout population estimates for rainbow, brown, brook, and bull trout, averaged 13 fish/km of the lower Flathead River. The number of bull trout and cutthroat trout captured was so low that estimation of their individual populations was not possible. An interim closure to trout harvest on the lower Flathead River was recommended and approved by the Tribal Council until study results can be further analyzed and management options reviewed. Population estimates for northern pike ranged from six/kilometer in poorer habitat, to one hundred three/km in the best habitat in the main Flathead River. Seven pike were radio tagged and their movements monitored. Movements of over 89 km were recorded. One fish left the Flathead River and moved down the Clark Fork to the Plains area. Fish weirs were constructed on the Jocko River and Mission Creek to assess spawning runs of trout from the main river. Thirty-two adult rainbow passed the Jocko weir and twenty-eight passed the Mission weir during the spring spawning season. Twenty adult brown trout were captured at the Jocko weir and five at Mission weir in the fall. The Jocko weir suffered minor damage due to bed load movement during high flows of spring runoff. The structure of trout populations in the lower Flathead River points to spawning and recruitment problems caused by hydroelectric operations and

The Impact of International and Domestic Factors on the Military Outcomes of National Unification: A Study of Four Historical Cases with Lessons for Korean Unification

Science.gov (United States)

2014-06-01

The fall of Laos to Communist military forces in 1961 and the Pentagon conclusion that Vietnam was “the only place in the world where the...extremely difficult to achieve.”74 Vietnam expert Douglas Pike confirms this view in writing that “Mao Tse -Tung and the Chinese Communists never did truly...earliest example was Nixon’s approval of airstrikes in January and February 1972 against the Vietnamese DMZ and the area where Laos , Cambodia, and Vietnam

Fernando de Szyszlo Military Professionalization in Chile and Peru.

Science.gov (United States)

1982-12-01

Mochica (circa 100 B.C.-800 A.D.), Nazca (circa 250 A.D.-850 A.D.), Chancay (circa 1300-1500 A.D.), and Inca (circa 1250-1550 A.D.) art. He had...Indagacion, p. 18 Manuel Jesus Orbegozo, "Entrevista concreta a un pintor abstracto," Cultura Peruana, 90 (December 1955): pages unnumbered. 18...Manuel Jesus. "Entrevista concreta con un pintor abstracto." Cultura peruana 90 (December 1955): pages unnumbered. Pike, Frederick B. The Modern

Zinc- and Y-group-bearing senaite from St Peters Dome, and new data on senaite from Dattas, Minas Gerais, Brazil.

Science.gov (United States)

Foord, E.E.; Sharp, W.N.; Adams, J.W.

1984-01-01

'Mineral Y', an unidentified phase described in association with murataite from a pegmatite in the Pikes Peak granite, El Paso County, Colorado (A.M. 59-172) is now found to be a senaite containing ZnO 7.05% and RE2O3 + Y2O3 5.24%, with the Zn and Y-group REE entering the (Ti,Fe,Mn) position. A Zn-bearing senaite from Dattas, Diamantina, Minas Gerais, has ZnO 7.7%.-R.A.H.

Symposium (International) (4th) on DETONATION Held at White Oak, Maryland on 12-15 October 1965.

Science.gov (United States)

1965-10-15

Rockville Pike Sevran (93), France White OakSilver Spring, Md. Rockville, Maryland Jean C. Bergon C. J. Aronson Centre d’Etudes de Gramat B. M. Butcher...Lab. Direction des Etudes et P. 0. Box 808 Fabrication d’Armements Hiram E. Driscoll Livermore, Calif. 94551 Centre d’Etudes de Gramat Hercules...Powder Co. Gramat (Lot), France Port Ewven, N. Y. 12466 David Finlayson Naval Weapons Lab. Charles B. Dale Dahlgren, Va. Naval Propellant Plant Brian Dunne

A comparison of hyperbolic solvers for ideal and real gas flows

Directory of Open Access Journals (Sweden)

R. M. L. Coelho

2006-09-01

Full Text Available Classical and recent numerical schemes for solving hyperbolic conservation laws were analyzed for computational efficiency and application to nonideal gas flows. The Roe-Pike approximate Riemann solver with entropy correction, the Harten second-order scheme and the extension of the Roe-Pike method to second-order by the MUSCL strategy were compared for one-dimensional flows of an ideal gas. These methods require the so-called Roe's average state, which is frequently difficult and sometimes impossible to obtain. Other methods that do not require the average state are best suited for complex equations of state. Of these, the VFRoe, AUSM+ and Hybrid Lax-Friedrich-Lax-Wendroff methods were compared for one-dimensional compressible flows of a Van der Waals gas. All methods were evaluated regarding their accuracy for given mesh sizes and their computational cost for a given solution accuracy. It was shown that, even though they require more floating points and indirect addressing operations per time step, for a given time interval for integration the second-order methods are less-time consuming than the first-order methods for a required accuracy. It was also shown that AUSM+ and VFRoe are the most accurate methods and that AUSM+ is much faster than the others, and is thus recommended for nonideal one-phase gas flows.

Inventory of forest and rangeland resources, including forest stress. [Black Hills, Manitou, Colorado, and Atlanta, Georgia

Science.gov (United States)

Aldrich, R. C.; Weber, F. P.; Driscoll, R. S. (Principal Investigator)

1974-01-01

The author has identified the following significant results. Road systems being developed within the Manitou, Colorado area for human habitation are readily discernible on the S192 normal-color photographs. These are dirt roads, some of which are about 20 feet wide. These data should provide the District Ranger of the Pike National Forest required information on the size and extent of these developing areas, information which he does not now have but is required for total management of the District.

Operation and Maintenance, 9-Foot Navigation Channel, Upper Mississippi River, Head of Navigation to Guttenberg, Iowa. Volume 2. Exhibits.

Science.gov (United States)

1974-08-01

Walleye and Sauger 18,000 19,000 R c. Northern Pike 3,000 6,000 p d. Other 27000 25.000 S TOTAL (Fish) 196,000 134 ,OO0 0 F Catch Rates (Fish Caught per...0 0 0 R 00000000 𔃺 0,~. 1.IpC 0 o t 0 Fi. C Z C Z 2 4 .tt 04 ’ 𔃻. IsO 00 cC cO ~~It N Ea Et OPRTO AND0MAINTENANCE OFC NINElOOTl NAIATO

Defending the Pittsburgh Waterways Against Catastrophic Disruption

Science.gov (United States)

2012-06-01

by the Hannibal L/D. Along the Allegheny River our AOI is bounded by the Allegheny L/D 5. Along the Monongahela River our AOI is bounded by the...22  Figure 9.  Dams segment the river into pools, which are numbered. Locks enable transit between pools. The Hannibal L/D and the Pike Island...AOI, listed in the table to the right. Along the Ohio River our AOI is bounded by the Hannibal L/D. Along the Allegheny River our AOI is bounded by

Exploring the Application of Optical Remote Sensing as a Method to Estimate the Depth of Backwater Nursery Habitats of the Colorado Pikeminnow

Energy Technology Data Exchange (ETDEWEB)

Hamada, Yuki [Argonne National Lab. (ANL), Argonne, IL (United States); LaGory, Kirk E. [Argonne National Lab. (ANL), Argonne, IL (United States)

2016-02-01

Low-velocity channel-margin habitats serve as important nursery habitats for the endangered Colorado pikeminnow (Ptychocheilus lucius) in the middle Green River between Jensen and Ouray, Utah. These habitats, known as backwaters, are associated with emergent sand bars, and are shaped and reformed annually by peak flows. A recent synthesis of information on backwater characteristics and the factors that influence inter-annual variability in those backwaters (Grippo et al. 2015) evaluated detailed survey information collected annually since 2003 on a relatively small sample of backwaters, as well as reach-wide evaluations of backwater surface area from aerial and satellite imagery. An approach is needed to bridge the gap between these detailed surveys, which estimate surface area, volume, and depth, and the reach-wide assessment of surface area to enable an assessment of the amount of habitat that meets the minimum depth requirements for suitable habitat.

Multiple Landslide-Hazard Scenarios Modeled for the Oakland-Berkeley Area, Northern California

Science.gov (United States)

Pike, Richard J.; Graymer, Russell W.

2008-01-01

With the exception of Los Angeles, perhaps no urban area in the United States is more at risk from landsliding, triggered by either precipitation or earthquake, than the San Francisco Bay region of northern California. By January each year, seasonal winter storms usually bring moisture levels of San Francisco Bay region hillsides to the point of saturation, after which additional heavy rainfall may induce landslides of various types and levels of severity. In addition, movement at any time along one of several active faults in the area may generate an earthquake large enough to trigger landslides. The danger to life and property rises each year as local populations continue to expand and more hillsides are graded for development of residential housing and its supporting infrastructure. The chapters in the text consist of: *Introduction by Russell W. Graymer *Chapter 1 Rainfall Thresholds for Landslide Activity, San Francisco Bay Region, Northern California by Raymond C. Wilson *Chapter 2 Susceptibility to Deep-Seated Landsliding Modeled for the Oakland-Berkeley Area, Northern California by Richard J. Pike and Steven Sobieszczyk *Chapter 3 Susceptibility to Shallow Landsliding Modeled for the Oakland-Berkeley Area, Northern California by Kevin M. Schmidt and Steven Sobieszczyk *Chapter 4 Landslide Hazard Modeled for the Cities of Oakland, Piedmont, and Berkeley, Northern California, from a M=7.1 Scenario Earthquake on the Hayward Fault Zone by Scott B. Miles and David K. Keefer *Chapter 5 Synthesis of Landslide-Hazard Scenarios Modeled for the Oakland-Berkeley Area, Northern California by Richard J. Pike The plates consist of: *Plate 1 Susceptibility to Deep-Seated Landsliding Modeled for the Oakland-Berkeley Area, Northern California by Richard J. Pike, Russell W. Graymer, Sebastian Roberts, Naomi B. Kalman, and Steven Sobieszczyk *Plate 2 Susceptibility to Shallow Landsliding Modeled for the Oakland-Berkeley Area, Northern California by Kevin M. Schmidt and Steven

PRELIMINARY STUDY OF DIFFERENT HORMONE TREATMENTS IN THE ARTIFICIAL PROPAGATION OF PIKEPERCH (Sander luciopreca REGARDING THE ASPECTS OF ANIMAL WELFARE

Directory of Open Access Journals (Sweden)

Á. NÉMETH

2009-10-01

Full Text Available The pikeperch (Sander lucioperca is very important and valuable freshwater fish in Hungary. The quality of lash is very high (white, tasty and boneless thus the gastronomically demand grows year by year. Besides the pikeperch is an attractive game fish and as a top predator, plays an important role in the maintenance of ecological balance in freshwater ecosystems. The success of pond culture of pikeperch depends on the propagation and nursing methods. Recently the technological development of artificial reproduction ensures the production of more fry and fingerlings. Present study investigates the different reproduction methods in consideration of the spawning behaviour of the pikeperch breeders. Between the hormone treatment and spawning there were observed six stagers in the behaviour of pike-perch couples- In addition to the observations on behaviour of spawning, various hormone products were examined in order to stimulate and synchronise the ovulation of pike perch breeders. Best results were recorded in case of using dried carp pituitary as a hormone treatment (170g eggs/stripped females, while the treatment with GnRH analogs resulted 145 g respectively. Moreover the price and biological advances of GnRH analogs require more research in their use in the field of artificial propagation of pikeperch. These hormones do not interfere violently the neuro-humoral regulation of the ovulation, thus contributes to maintain better conditions of animal welfare during the propagation procedure.

Mercury and omega-3 fatty acid profiles in freshwater fish of the Dehcho Region, Northwest Territories: Informing risk benefit assessments.

Science.gov (United States)

Laird, Matthew J; Henao, Juan J Aristizabal; Reyes, Ellen S; Stark, Ken D; Low, George; Swanson, Heidi K; Laird, Brian D

2018-05-17

Traditional foods have significant nutritional, sociocultural and economic value in subarctic First Nations communities of the Northwest Territories, and play a crucial role in promoting cultural continuity and sovereignty. Omega-3 polyunsaturated fatty acids (N-3 PUFAs), including eicosapentaenoic (EPA) and docosahexaenoic acid (DHA), carry significant benefits for neurocognitive development and cardiovascular health. However, the health risks posed by methylmercury may serve to undermine the benefits of fish consumption in Northern Indigenous communities. The objective of this study was to characterize profiles for mercury (Hg) and fatty acids in fish species harvested across lakes of the Dehcho Region, in the Mackenzie Valley of the Northwest Territories, to better understand the risks and benefits associated with traditional foods. Hg levels increased with trophic position, with the highest levels found in Burbot, Lake Trout, Walleye, and Northern Pike. Lake Trout, along with planktivorous species including Lake Whitefish, Cisco, and Sucker, demonstrated higher N-3 PUFAs than other species. Negative associations were observed between Hg and N-3 PUFAs in Lake Trout, Northern Pike, Walleye and Burbot. Further stratifying these relationships revealed significant interactions by lake. Significant differences observed in fatty acid and Hg profiles across lakes underscore the importance of considering both species- and lake-specific findings. This growing dataset of freshwater fish of the Dehcho will inform future efforts to characterize human Hg exposure profiles using probabilistic dose reconstruction models. Copyright © 2018 Elsevier B.V. All rights reserved.

Restoration and loss after disaster: Applying the dual-process model of coping in bereavement.

Science.gov (United States)

McManus, Ruth; Walter, Tony; Claridge, Leon

2018-08-01

The article asks whether disasters that destroy life but leave the material infrastructure relatively intact tend to prompt communal coping focusing on loss, while disasters that destroy significant material infrastructure tend to prompt coping through restoration/rebuilding. After comparing memorials to New Zealand's Christchurch earthquake and Pike River mine disasters, we outline circumstances in which collective restorative endeavor may be grassroots, organized from above, or manipulated, along with limits to effective restoration. We conclude that bereavement literature may need to take restoration more seriously, while disaster literature may need to take loss more seriously.

Fish, seafood and food from inland waters

International Nuclear Information System (INIS)

Feldt, A.

1985-01-01

Systematic monitoring of fish for radioactive nuclides yields data on the radiation exposure of the population as a consequence of fish consumption, and information on radioecological parameters (uptake by ingestion). Radioecological investigations have been made in the environment of nuclear installations and in marine regions where dumping of radioactive solid wastes was known to have been done. The paper reports on whole-fish monitoring for contamination with Sr-90 and Cs-137, and on examinations of pikes in the Kolksee of Northern Germany, for Cs-137 contamination. (DG) [de

Postsotsialismist vaatemängulinna = From Post-Socialism to the City of the Spectacle / Andres Kurg

Index Scriptorium Estoniae

Kurg, Andres, 1975-

2007-01-01

Büroo Alver Trummal Arhitektid töödest, Andres Alverist ja Tiit Trummalist. Ärihoonest Tallinnas Rävala pst. 4. Autorid: Andres Alver, Tiit Trummal, Tarmo Laht, Indrek Rünkla, Ulla Mets, Sven Koppel. Konstruktor Eido Uustalu (Eesti Projekt). Projekt 2001, valmis 2006. City Plazast Tallinnas Tartu mnt. 2. Autorid: A. Alver, T. Trummal, T. Laht, I. Rünkla, Martin Melioranski, U. Mets. Konstruktor: Tiit Masso, Pike Projekt. Sisekujundus (fuajeed, restoran): Pille Lausmäe. Projekt 2001, valmis 2004. Lõige, põhiplaan, 3 värv. välis- ja 5 sisevaadet

Book review: Udo Diedrichs, Wulf Reiners and Wolfgang Wessels (eds., The Dynamics of Change in EU Governance

Directory of Open Access Journals (Sweden)

Raluca Oprescu

2011-12-01

Full Text Available The book is the result of a smooth interfusion between different academic disciplines and it pikes on the process of governance transformation in the European Union. The main hypothesis of the book upholds that it is a high interdependence between governance and deepening the process of integration. As it seeks answers to the question of what changes have taken place in EU governance up to the Lisbon Treaty and which factors have triggered it, the study presents an extensive image of EU governance from multiple perspectives.

Ferromagnetic Long Range Ordering in Copper(2) Maleate Monohydrate.

Science.gov (United States)

1988-11-20

thanks the Consejo Nacional de Ciencia y Tecnologia for a partial fellowship. 10 References 1a) SYNTHECO, Inc., 1920 Industrial Pike, Gastonia, N.C...Philadelphia, 1966; Chapter 3. 14) D. B. Losee and W. E. Hatfield, Phs e.i Q 1122 (1974). 15) y . Yamamoto, M. Matsuura, and T. Haseda, J. Phys.-Soc...Mal in the solid state recorded at room temperature. 12 (0 Vj) N 4W +C +~ 13 4P4 CYC CS) (SG) CS + 0 (0 + C, S+ + 06 + + + 3 CC, (( Y ) uo p1 3ubA 00 CL

Third Semiannual Report to the Congress by the United States Atomic Energy Commission, February 2, 1948

Energy Technology Data Exchange (ETDEWEB)

Lilienthal, David E.; Bacher, Robert F.; Pike, Sumner T.; Strauss, Lewis L.; Waymack, William W.

1948-02-02

The document includes the letter of submittal and the third semiannual report. These reports are called for pursuant to Section 17 of the Atomic Energy Act of 1946. The letter of submittal was titled ''Letter from the Chairman and Members of the United States Atomic Energy Commission transmitting pursuant to law the third semiannual report of the Atomic Energy Commission''. It was authored by David E. Lilienthal, Chairman, and Robert F. Bacher, Sumner T. Pike, Lewis L. Strauss, and William W. Waymack of the AEC.

Determination of selenium in fish from designated critical habitat in the Gunnison River, Colorado, March through October, 2012

Science.gov (United States)

May, Thomas W.; Walther, Michael J.

2013-01-01

This report presents results for the summer 2012 sam-pling of muscle plugs from common carp (Cyprinus carpio), bonytail chub (Gila elegans), Colorado pikeminnow (Ptycho-cheilus lucius), and razorback suckers (Xyrauchen texanus) inhabiting critical habitat in the Gunnison River in western Colorado. Total selenium in fish muscle plugs was determinedby instrumental neutron activation analysis. Total selenium concentrations (range and mean ± standard deviation) in micrograms per gram dry weight were 6.0 to 10.7, 8.8 ± 1.3 for common carp; 2.9 to 8.7, 5.6 ± 2.4 for Colorado pikemin-now; and 1.4 to 7.3, 3.4 ± 2.7 for razorback sucker. The selenium concentration for one bonytail chub sample was 0.8 micrograms per gram dry weight. Selenium concentrations in muscle plugs from 1 Colorado pikeminnow and 12 common carp exceeded the 8 micrograms per gram dry weight toxicity guideline for selenium in fish muscle tissue.

Distribution and status of five non-native fish species in the Tampa Bay drainage (USA), a hot spot for fish introductions

Science.gov (United States)

Lawson, Katelyn M.; Tuckett, Quenton M.; Ritch, Jared L.; Nico, Leo; Fuller, Pam; Matheson, Richard E.; Hill, Jeffrey E.

2017-01-01

The Tampa Bay region of Florida (USA) is a hot spot for non-native freshwater fishes. However, published information on most non-native fishes in the basin is not current. Systematic sampling efforts targeting non-native fishes in the region were conducted from 2013–2015 by the University of Florida Tropical Aquaculture Laboratory. Data from these recent surveys were analyzed, along with historic and new data from published and unpublished sources, to assess current fish distributions and determine status. We focus on five of the non-native species sampled: pike killifish Belonesox belizanus Kner, 1860, green swordtail Xiphophorus hellerii Heckel, 1848, southern platyfish Xiphophorus maculatus (Günther, 1866), Mayan cichlid Mayaheros urophthalmus (Günther, 1862), and Jack Dempsey Rocio octofasciata (Regan, 1903). All five were found to have reproducing populations in the basin, each showing broader distributions than previously indicated. Non-native populations of four of the species have persisted in the Tampa Bay region since at least the 1990s. In contrast, the presence of Mayan cichlid in the basin was not confirmed until 2004. Based on numbers, distributions, and years of persistence, these five species all maintain established populations. Pike killifish and Mayan cichlid are established and spreading throughout multiple habitat types, while green swordtail, southern platyfish, and Jack Dempsey are localized and found primarily in more marginal habitats (e.g., small ditches and first order tributary streams). Factors affecting continued existence and distributions likely include aquaculture, biotic resistance, and thermal and salinity tolerances. We also clarify non-native species status determination using a multi-agency collaborative approach, and reconcile differences in terminology usage and interpretation.

CARBON SEQUESTRATION ON SURFACE MINE LANDS

Energy Technology Data Exchange (ETDEWEB)

Donald H. Graves; Christopher Barton; Richard Sweigard; Richard Warner

2005-06-22

An area planted in 2004 on Bent Mountain in Pike County was shifted to the Department of Energy project to centralize an area to become a demonstration site. An additional 98.3 acres were planted on Peabody lands in western Kentucky and Bent Mountain to bring the total area under study by this project to 556.5 acres as indicated in Table 2. Major efforts this quarter include the implementation of new plots that will examine the influence of differing geologic material on tree growth and survival, water quality and quantity and carbon sequestration. Normal monitoring and maintenance was conducted and additional instrumentation was installed to monitor the new areas planted.

Superclusters and galaxy formation

International Nuclear Information System (INIS)

Einasto, J.; Joeveer, M.; Saar, E.

1979-01-01

The spatial distribution of Galaxies and Galaxy congestions in the southern galactic hemisphere is studied. The rich galaxy congestions, containing many elliptic Galaxies and radiogalaxies, are linked with each other by chains of scanty congestions with moderate content of elliptic Galaxies and radiogalaxies. The flat formation, linking the density pikes and the intermediate chains, can reasonably be called supercongestion. In the central region of supercongestions there is a thin layer of Galaxies consisting of only spiral Galaxies. The neighbouring supercongestions touch each other, while the intersupercongestion space contains no Galaxy congestions and almost no Galaxies. It is shown that such a structure was, apparently, formed before the formation of Galaxies

Conventional heating systems is heating with geothermal water, v. 15(60)

International Nuclear Information System (INIS)

Hadzhimishev, Dimitar; Gashteovski, Ljupcho; Shami, Jotso

2007-01-01

The Geothermal Energy (GE) is a new renewable energy source with many advantages and specifics. Present mainly application of GE is in agriculture. In Geothermal System Kochani the GE uses for district heating and industrial uses also. There are many problems to solve before using the geothermal energy for district heating: direct application feasibility for heating rooms and industrial using existing heating installation system (90/70°C); the level of heating needs covering without installation reconstruction; techno-economical justification of this reconstruction ; covering of pike heating needs. The answers of these enigmas you have in this written effort. The results were practically justified in about ten object in Kochani. (Author)

Individual based population inference using tagging data

DEFF Research Database (Denmark)

Pedersen, Martin Wæver; Thygesen, Uffe Høgsbro; Baktoft, Henrik

A hierarchical framework for simultaneous analysis of multiple related individual datasets is presented. The approach is very similar to mixed effects modelling as known from statistical theory. The model used at the individual level is, in principle, irrelevant as long as a maximum likelihood...... estimate and its uncertainty (Hessian) can be computed. The individual model used in this text is a hidden Markov model. A simulation study concerning a two-dimensional biased random walk is examined to verify the consistency of the hierarchical estimation framework. In addition, a study based on acoustic...... telemetry data from pike illustrates how the framework can identify individuals that deviate from the remaining population....

Thermal and maternal environments shape the value of early hatching in a natural population of a strongly cannibalistic freshwater fish

DEFF Research Database (Denmark)

Pagel, T.; Bekkevold, Dorte; Pohlmeier, S.

2015-01-01

Hatching early in the season is often assumed to elevate fitness, particularly in cannibalistic fish in which size-dependent predation mortality is a major selective force. While the importance of the thermal environment for the growth of fish is undisputed, the relevance of maternal effects...... represented by juvenile growth rate), but not female total length, to jointly contribute to explain within- and among-season size variation in juvenile pike. While there was no statistical evidence for maternal effects on offspring growth rate, fast female juvenile growth positively correlated...... in the wild and that early hatching does not generally produce size advantages in light of stochastically varying temperature conditions...

Alkylation of mixed olefins with isobutane in a stratco chemical reactor

Energy Technology Data Exchange (ETDEWEB)

Vichailak, M. [ABB Lummus Global Inc., Houston, TX (United States); Hopper, J.R.; Yaws, C.L. [Lamar Univ., Beaumont, TX (United States); Pike, R.W. [Louisiana State Univ., Baton Rouge, LA (United States)

1996-12-31

The 17 reaction model for the sulfuric acid alkylation of isobutane with propylene as proposed by Langley and Pike has been used to simulate the effluent refrigeration reactor. The simulation conditions selected to minimize the formation of light and heavy by-product were determined to be: Temperature: 9 - 10 {degrees}C,- Isobutane/Olefin Ratio: 8 - 10; % Volume of Acid: 50 %. The reactor effluent composition from the simulation program has been used to compare with several sets of published data with reasonable agreement. This model has been extrapolated to simulate the alkylation of isobutane with butylenes and amylenes. The model will be optimized with commercial data. 9 refs., 6 figs., 1 tab.

Conventional heating systems is heating with geothermal water, v. 15(59)

International Nuclear Information System (INIS)

Hadzhimishev, Dimitar; Gashteovski, Ljupcho; Shami, Jotso

2007-01-01

The Geothermal Energy (GE) is a new renewable energy source with many advantages and specifics. Present mainly application of GE is in agriculture. In Geothermal System Kochani the GE uses for district heating and industrial uses also. There are many problems to solve before using the geothermal energy for district heating: direct application feasibility for heating rooms and industrial using existing heating installation system (90/70°C); the level of heating needs covering without installation reconstruction; techno-economical justification of this reconstruction ; covering of pike heating needs. The answers of these enigmas you have in this written effort. The results were practically justified in about ten object in Kochani. (Author)

Media Training

CERN Multimedia

CERN. Geneva

2009-01-01

With the LHC starting up soon, the world's media are again turning their attention to CERN. We're all likely to be called upon to explain what is happening at CERN to media, friends and neighbours. The seminar will be given by BBC television news journalists Liz Pike and Nadia Marchant, and will deal with the kind of questions we're likely to be confronted with through the restart period. The training is open for everybody. Make sure you arrive early enough to get a seat - there are only 200 seats in the Globe. The session will also be webcast: http://webcast.cern.ch/

Portsmouth annual environmental report for 2003, Piketon, Ohio

Energy Technology Data Exchange (ETDEWEB)

none, none

2004-11-30

The Portsmouth & Gaseous Diffusion Plant (PORTS) is located on a 5.8-square-mile site in a rural area of Pike County, Ohio. U.S. Department of Energy (DOE) activities at PORTS include environmental restoration, waste 'management, and long-term'stewardship of nonleased facilities: Production facilities for the separation of uranium isotopes are leased to the United States Enrichment Corporation (USEC), but most activities associated with the uranium enrichment process ceased in 2001. USEC activities are not covered by this document, with the exception of some environmental compliance information provided in Chap. 2 and radiological and non-radiological environmental monitoring program information discussed in Chaps. 4 and 5.

The Seneca effect why growth is slow but collapse is rapid

CERN Document Server

Bardi, Ugo

2017-01-01

The essence of this book can be found in a line written by the ancient Roman Stoic Philosopher Lucius Annaeus Seneca: "Fortune is of sluggish growth, but ruin is rapid". This sentence summarizes the features of the phenomenon that we call "collapse," which is typically sudden and often unexpected, like the proverbial "house of cards." But why are such collapses so common, and what generates them? Several books have been published on the subject, including the well-known "Collapse" by Jared Diamond (2005), "The collapse of complex societies" by Joseph Tainter (1998) and "The Tipping Point," by Malcom Gladwell (2000). Why The Seneca Effect? This book is an ambitious attempt to pull these various strands together by describing collapse from a multi-disciplinary viewpoint. The reader will discover how collapse is a collective phenomenon that occurs in what we call today "complex systems," with a special emphasis on system dynamics and t he concept of "feedback." From this foundation, Bardi applies the...

Assessment of doses caused by electrons in thin layers of tissue-equivalent materials, using MCNP.

Science.gov (United States)

Heide, Bernd

2013-10-01

Absorbed doses caused by electron irradiation were calculated with Monte Carlo N-Particle transport code (MCNP) for thin layers of tissue-equivalent materials. The layers were so thin that the calculation of energy deposition was on the border of the scope of MCNP. Therefore, in this article application of three different methods of calculation of energy deposition is discussed. This was done by means of two scenarios: in the first one, electrons were emitted from the centre of a sphere of water and also recorded in that sphere; and in the second, an irradiation with the PTB Secondary Standard BSS2 was modelled, where electrons were emitted from an (90)Sr/(90)Y area source and recorded inside a cuboid phantom made of tissue-equivalent material. The speed and accuracy of the different methods were of interest. While a significant difference in accuracy was visible for one method in the first scenario, the difference in accuracy of the three methods was insignificant for the second one. Considerable differences in speed were found for both scenarios. In order to demonstrate the need for calculating the dose in thin small zones, a third scenario was constructed and simulated as well. The third scenario was nearly equal to the second one, but a pike of lead was assumed to be inside the phantom in addition. A dose enhancement (caused by the pike of lead) of ∼113 % was recorded for a thin hollow cylinder at a depth of 0.007 cm, which the basal-skin layer is referred to in particular. Dose enhancements between 68 and 88 % were found for a slab with a radius of 0.09 cm for all depths. All dose enhancements were hardly noticeable for a slab with a cross-sectional area of 1 cm(2), which is usually applied to operational radiation protection.

[Role of Aeromonas in the monitoring of a hydroecosystem in the Volga-Caspian area].

Science.gov (United States)

Obukhova, O V; Lartseva, L V; Lisitskaia, I A

2011-01-01

The paper gives data obtained over many years on the quantity of bacteria of the genus Aeromonas in the hydroecosystems of the delta of the Volga and Caspian Sea and in commercial fishes (sturgeon (Acipenseridae), pike perch (Stizostedion), carp (Cyprinus carpio), silurus (Silurus glanis), etc.). It provides a detailed analysis of their seasonal trends and spatial distribution, markers of their pathogenicity, and antibiotic resistance. The findings suggest that Aeromonas is a causative agent of sapronoses and meets the criteria for natural focal infections. They show a wide range of tolerance to the abiotic factors of hydroecosystems, as well as mixotrophy and autrophic nutrition in the environment and they are of great sanitary and hygienic importance.

Textile sensors for stab and cut detection

Science.gov (United States)

Graßmann, C.; Obermann, M.; Lempa, E.; Bache, T.; Siegel, P. K.; Freyer, T.; Paschko, S.; Beyer, T.; Kirsche, M.; Schwarz-Pfeiffer, A.

2017-10-01

Manufacturers are aiming for more flexible and lightweight protective clothing to increase wearing comfort. A cardigan with a knitted stab-resistant inlay and an alarm system is presented. The stab-resistant inlay is based on a multilayer ultra-high molecular weight poly ethylene (UHMW-PE) fabric. Stab resistance was evaluated according to the standard of the Association of Test Laboratories for Bullet, Stab or Pike Resistant Materials and Construction Standard (VPAM 2011). Furthermore sensors for the detection of cuts and pressure were integrated. Both sensors can trigger alarms if the wearer is attacked. Normal pressure occurring through leaning on a wall or sitting is filtered out and does not trigger an alarm.

Influence of gamma radiation on productiveness of Cuba C-204 wheat variety in spring

International Nuclear Information System (INIS)

Caballero Torres, I.; Perez Talavera, S.; Diaz Esquivel, R.

1995-01-01

The percentage of flowers carrying seeds in spikes from seed irradiated plant with 100 to 800 Gy and non irradiated control plants was evaluated cv. Cuba C -204 wheat affectation. The results showed a significative (1 %) dose and s'pikes maturity time influence by bi factorial analysis. A significance of 1 % dose-maturity time interaction was obtained too and that bigger flowers carrying seeds percentage is obtained in 400 Gy radiated seeds plants. A delay of 5 days is present in the 500 Gy radiated plants maturity and a seed carrying flowers reduction of 35 % with reference to control. From 600 Gy up in the studied variety seeds were not obtained in the spring season

Vertebrate behavior and ecology. Progress report, July 1, 1977-May 31, 1980

Energy Technology Data Exchange (ETDEWEB)

Tester, J R; Siniff, D B

1980-06-01

Engineering design and development concentrated on five aspects during the past year: (1) development of high power output transmitters for monitoring animals from greater distances; (2) improvement and updating of a sonic transmitting and receiving system for monitoring fish and marine mammals; (3) design and testing of corrosive links which permit a transmitter to release from an animal at a specified time; (4) development of high frequency transmitters; and (5) development and testing of time delay transmitters. Field efforts resulted in further information on activity patterns and movements of sea otters in California and Alaska and of walleye pike in experimental channels. Three manuscripts and two theses presented as part of this report describe these aspects in detail.

Simulation of the June 11, 2010, flood along the Little Missouri River near Langley, Arkansas, using a hydrologic model coupled to a hydraulic model

Science.gov (United States)

Westerman, Drew A.; Clark, Brian R.

2013-01-01

A substantial flood event occurred on June 11, 2010, causing the Little Missouri River to flow over much of the adjacent land area, resulting in catastrophic damages. Twenty fatalities occurred and numerous automobiles, cabins, and recreational vehicles were destroyed within the U.S. Department of Agriculture-Forest Service Albert Pike Recreation Area, at a dispersed campsite area in the surrounding Ouachita National Forest lands, and at a nearby privately owned camp. The Little Missouri River streamgage near Langley, Arkansas, reached a record streamflow of 70,800 cubic feet per second and a stage (water level) of 23.5 feet at 5:30 a.m., with a 10-foot rise occurring in slightly more than 1 hour.

Open Media Training Session

CERN Multimedia

CERN. Geneva; Marchant, Nadia

2010-01-01

Have you ever wondered how the media work and why some topics make it into the news and other don't? Would you like to know how to (and how not to) give an interview to a journalist? With the LHC preparing for first collisions at high energies, the world's media are again turning their attention to CERN. We're all likely to be called upon to explain what is happening at CERN to media, friends and neighbours. The seminar will be given by BBC television news journalists Liz Pike and Nadia Marchant, and will deal with the kind of questions we're likely to be confronted with through the restart period. Follow the webcast: http://webcast.cern.ch/

76 FR 71124 - Caddo Valley Railroad Company-Abandonment Exemption-in Pike and Clark Counties, AR

Science.gov (United States)

2011-11-16

... Branch Line extending between milepost 429.45, near Gurdon, and milepost 447, near Antoine, a distance of... AKMD under the Board's feeder line statute at 49 U.S.C. 10907. See Caddo Antoine & Little Mo. R.R...

Strontium content in otoliths of common fish species in the northern Baltic Sea

Energy Technology Data Exchange (ETDEWEB)

Lill, J-O.; Heselius, S-J. [Accelerator Laboratory, Turku PET Centre, Abo Akademi University, Turku (Finland); Himberg, M.; Hagerstand, H. [Cell Biology, Department of Biosciences, Abo Akademi University, Turku (Finland); Harju, L. [Analytical Chemistry, Department of Chemical Engineering, Abo Akademi University, Turku (Finland); Lindroos, A. [Geology and Mineralogy, Department of Natural Sciences, Abo Akademi University, Turku (Finland); Gunnelius, K.; Smâtt, J-H. [Physical Chemistry, Department of Natural Sciences, Abo Akademi University, Turku (Finland)

2013-07-01

Full text: The salinity of water in the northern Baltic Sea forms a gradient as it receives fresh water from several large rivers in the north and salty water by infrequent inflows of North Sea water in the south. The salinity of brackish water in the north-south direction (700 km) changes from about 3 to 7%. In an attempt to use the salinity gradient to study migration patterns, sagittae otoliths were collected from common fish species caught at different locations along the Finnish west coast. Otoliths from fishes caught in fresh-water lakes in Finland and Estonia were also included in the study for comparison. Part of the otoliths was grind and the powder was pressed to pellets which were irradiated in air with an ion beam from the Abo Akademi cyclotron and the emitted X-rays were measured. Other otoliths were embedded in epoxy and polished to reveal the ring structure. These prepared otoliths were irradiated with the ion beam to determine elemental profiles. Furthermore, XRD was applied to study the crystal structure and to identify the minerals in the otoliths. The strontium level of water is usually related to its salinity, and as the strontium ions are able to replace calcium ions in fish otoliths [1], the strontium content in fish otoliths from the same locations is expected to be very similar. However, the PIXE analyses revealed large differences in the strontium content between otoliths from different species of fish caught at the same locations. The strontium concentration in otoliths of perch and pike from the Aland Islands was about 1600 μg/g and of common whitefish 3600 μg/g. The strontium concentration in perch otoliths from the Oravais archipelago, about 400 km north of the Aland Islands, was 1400 μg/g. Corresponding concentration in otoliths of perch and pike caught in fresh-water lakes was 200 μg/g and of common whitefish from Saadjarve 400 μg/g and from Lake Inari 1000 μg/g. Otoliths of perch contained no detectable amounts of zinc (Iower

Strontium content in otoliths of common fish species in the northern Baltic Sea

International Nuclear Information System (INIS)

Lill, J-O.; Heselius, S-J.; Himberg, M.; Hagerstand, H.; Harju, L.; Lindroos, A.; Gunnelius, K.; Smâtt, J-H.

2013-01-01

Full text: The salinity of water in the northern Baltic Sea forms a gradient as it receives fresh water from several large rivers in the north and salty water by infrequent inflows of North Sea water in the south. The salinity of brackish water in the north-south direction (700 km) changes from about 3 to 7%. In an attempt to use the salinity gradient to study migration patterns, sagittae otoliths were collected from common fish species caught at different locations along the Finnish west coast. Otoliths from fishes caught in fresh-water lakes in Finland and Estonia were also included in the study for comparison. Part of the otoliths was grind and the powder was pressed to pellets which were irradiated in air with an ion beam from the Abo Akademi cyclotron and the emitted X-rays were measured. Other otoliths were embedded in epoxy and polished to reveal the ring structure. These prepared otoliths were irradiated with the ion beam to determine elemental profiles. Furthermore, XRD was applied to study the crystal structure and to identify the minerals in the otoliths. The strontium level of water is usually related to its salinity, and as the strontium ions are able to replace calcium ions in fish otoliths [1], the strontium content in fish otoliths from the same locations is expected to be very similar. However, the PIXE analyses revealed large differences in the strontium content between otoliths from different species of fish caught at the same locations. The strontium concentration in otoliths of perch and pike from the Aland Islands was about 1600 μg/g and of common whitefish 3600 μg/g. The strontium concentration in perch otoliths from the Oravais archipelago, about 400 km north of the Aland Islands, was 1400 μg/g. Corresponding concentration in otoliths of perch and pike caught in fresh-water lakes was 200 μg/g and of common whitefish from Saadjarve 400 μg/g and from Lake Inari 1000 μg/g. Otoliths of perch contained no detectable amounts of zinc (Iower

Impact of the Sainte-Marguerite 3 hydroelectric reservoir on the mercury exposure of local fish consumers

International Nuclear Information System (INIS)

Schetagne, R.; Plante, M.; Castonguay, D.

2010-01-01

This study examined fish mercury levels in a freshwater impoundment flooded as part of the Sainte-Marguerite-3 hydroelectric generating station. The study compared mercury levels obtained before the area was flooded in 1997 with mercury exposure surveys obtained in 2006. Mercury levels in the fish have increased by factors ranging from 4 to 8. Total mercury concentrations have reached 0.78 μg per g in 400-mm lake whitefish and 1.85 μg per g in 700-mm northern pike. Non-native fishers consumed significantly more local fish on a monthly basis after the area was flooded. Native Innu fishers consumed less fish. Average hair mercury concentrations for non-native fish consumers remained unchanged, which mercury levels in native fish consumers decreased significantly.

Application of micro-PIXE to fish life history analyses: trace element analysis of otoliths

International Nuclear Information System (INIS)

Elfman, M.; Limburg, K.E.; Kristiansson, P.; Malmqvist, K.; Pallon, J.

1999-01-01

Otoliths are biogenic, carbonate concretions which form part of the hearing/balance system in fishes. The radial growth of otoliths and the variation of trace elements along the radius appear to capture important aspects of fishes' environmental history. At the Lund Nuclear Microprobe Laboratory, we have begun to use Proton-Induced X-ray Emission spectroscopy (PIXE) for micro-elemental analysis of otoliths. The experimental procedure is discussed and a number of examples of what can be investigated are presented. In particular, movement of diadromous species (eel, menhaden, and anadromous brown trout) can be detected between fresh and brackish water by Sr/Ca ratio. This technique has also been used to identify fish that were raised in freshwater hatcheries and then released to brackish water (pike-perch example)

76 FR 71125 - Caddo Valley Railroad Company-Abandonment Exemption-in Clark, Pike, and Montgomery Counties, AR

Science.gov (United States)

2011-11-16

... Abandonments to abandon the portion of the Norman Branch Line extending between milepost 447, near Antoine, to... feeder line statute at 49 U.S.C. 10907. See Caddo Antoine & Little Mo. R.R.--Feeder Line Acquis.--Ark...

Extraction Optimization and Characterization of Collagen from Yellow Pike Conger Swimbladder with Acid-Hydro-Exctraction Method

Directory of Open Access Journals (Sweden)

Fernandy Djailani

2016-08-01

Full Text Available Swim bladder is one of marine potential byproducts for alternative source of collagen. This study aimedto optimize hydro-extraction and characterized collagen. Extraction optimization of collagen was determinedusing Box-behnken design response surface method with three variables: CH3COOH concentration, soakingtime and extraction time to yield response. Hydro-extraction collagen was characterization based on theamino acid content, SDS-PAGE, FT-IR and DSC. Acording to the result, the concentration had significantlyinfluence yield. Optimum extraction conditions were variable combinations of acetic acid concentration of0.1 M, for 1 h and hydro-extraction time of 1 h to produce the highest yield 63.35%. collagen was classifiedas type I collagen by amino acid content, electrophoresis patterns and fourier transform infrared (FTIRspectra. The glass transition of collagen was 67.23oC, showed high thermal stability that can be applied tothe cosmetics industry and nutraceutical.

Commercial and game fish from the Dąbie lake (Poland and their infection of Paracoenogonimus ovatus (Digenea

Directory of Open Access Journals (Sweden)

Angelika Anna Linowska

2015-11-01

Full Text Available Paracoenogonimus ovatus is the parasite that infest wide definitive host range (predator birds and at least two intermediate hosts: molluscs (Viviparus viviparus, V. fasciatus and freshwater fish from eastern and central Europe. The larvae of the parasite (metacercariae go to the muscle and connective tissue, and at high intensity of infection to the internal organs and brain of fish. A total of 128 fishes were caught in autumn 2009 and 2014, by fishing boats operating in Lake Dąbie, which is one of the largest lakes in Poland. The species selected reflect the species structure of commercial and recreational catches. They were roach, bream, silver bream, crucian carp (Cyprinidae, ruffe, perch, zander (Percidae and pike (Esocidae. The fish were filleted, and the skinned muscle was compressed under a trichinoscope, what allowed to see and count metacercariae in the tissues. To facilitate parasite isolation from the cysts, the muscle tissues were subjected to a 0.1 % solution of activated pepsin and 5 % citric acid at a temperature of 20ºC. The free larvae were measured and identified under an Olympus BX 50 microscope coupled with a camera running AxioVs40 V 4.8.2.0 software. Metacercariae are grouped primarily at depths ranging from just beneath the skin to about 50% of fillet thickness. The infection prevalence of P. ovatus metacercariae in the fish analyzed was 78,5%. The density of infection per gram of muscle tissue mass in the fish infected was 8.85 (from 1 to 84 metacercariae. The highest density was noted in roach, bream and white bream (17.09, 11.14 and 9.58, respectively. Metacercariae occurred singly in pike, parasites were not found in the muscles of crucian carp, ruffe, and perch examined. The reason for such differences in infection is the availability and composition of food, as well as the behavior of the fish examined.

Estimation of the species richness of fish parasite fauna: an ecological approach

Directory of Open Access Journals (Sweden)

Ieshko Evgeny Pavlovich

2012-12-01

Full Text Available We studied the biological diversity of the parasite fauna in pike from four habitats found in northern lakes of Karelia. The curves of the expected species richness versus sampling effort (the number of examined specimens dependency were plotted. A universal approach to the description of the new species replenishment dynamics is proposed – including finding (through combinatorial analysis the median value between the fastest and the slowest paths of the species richness growth followed by approximation using logistic function . Our analysis showed that the leading ecological factors controlling the formation of the parasite species richness in a specific waterbody are the richness of infracommunities and the age composition of the host sample. The sample of 15 host specimens contains at least 80% of all species in the parasite community.

Topography-specific isotropic tunneling in nanoparticle monolayer with sub-nm scale crevices.

Science.gov (United States)

Wang, Guisheng; Jiao, Weihong; Yi, Lizhi; Zhang, Yuejiao; Wu, Ke; Zhang, Chao; Lv, Xianglong; Qian, Lihua; Li, Jianfeng; Yuan, Songliu; Chen, Liang

2016-10-07

Material used in flexible devices may experience anisotropic strain with identical magnitude, outputting coherent signals that tend to have a serious impact on device reliability. In this work, the surface topography of the nanoparticles (NPs) is proposed to be a parameter to control the performance of strain gauge based on tunneling behavior. In contrast to anisotropic tunneling in a monolayer of spherical NPs, electron tunneling in a monolayer of urchin-like NPs actually exhibits a nearly isotropic response to strain with different loading orientations. Isotropic tunneling of the urchin-like NPs is caused by the interlocked pikes of these urchin-like NPs in a random manner during external mechanical stimulus. Topography-dependent isotropic tunneling in two dimensions reported here opens a new opportunity to create highly reliable electronics with superior performance.

A bibliography of terrain modeling (geomorphometry), the quantitative representation of topography: supplement 4.0

Science.gov (United States)

Pike, Richard J.

2002-01-01

Terrain modeling, the practice of ground-surface quantification, is an amalgam of Earth science, mathematics, engineering, and computer science. The discipline is known variously as geomorphometry (or simply morphometry), terrain analysis, and quantitative geomorphology. It continues to grow through myriad applications to hydrology, geohazards mapping, tectonics, sea-floor and planetary exploration, and other fields. Dating nominally to the co-founders of academic geography, Alexander von Humboldt (1808, 1817) and Carl Ritter (1826, 1828), the field was revolutionized late in the 20th Century by the computer manipulation of spatial arrays of terrain heights, or digital elevation models (DEMs), which can quantify and portray ground-surface form over large areas (Maune, 2001). Morphometric procedures are implemented routinely by commercial geographic information systems (GIS) as well as specialized software (Harvey and Eash, 1996; Köthe and others, 1996; ESRI, 1997; Drzewiecki et al., 1999; Dikau and Saurer, 1999; Djokic and Maidment, 2000; Wilson and Gallant, 2000; Breuer, 2001; Guth, 2001; Eastman, 2002). The new Earth Surface edition of the Journal of Geophysical Research, specializing in surficial processes, is the latest of many publication venues for terrain modeling. This is the fourth update of a bibliography and introduction to terrain modeling (Pike, 1993, 1995, 1996, 1999) designed to collect the diverse, scattered literature on surface measurement as a resource for the research community. The use of DEMs in science and technology continues to accelerate and diversify (Pike, 2000a). New work appears so frequently that a sampling must suffice to represent the vast literature. This report adds 1636 entries to the 4374 in the four earlier publications1. Forty-eight additional entries correct dead Internet links and other errors found in the prior listings. Chronicling the history of terrain modeling, many entries in this report predate the 1999 supplement

Hazard assessment of inorganics to three endangered fish in the Green River, Utah

Science.gov (United States)

Hamilton, S.J.

1995-01-01

Acute toxicity tests were conducted with three life stages of Colorado squawfish (Ptychocheilus lucius), razorback sucker (Xyrauchen texanus), and bonytail (Gila elegans) in a reconstituted water quality simulating the middle part of the Green River of Utah. Tests were conducted with boron, lithium, selenate, selenite, uranium, vanadium, and zinc. The overall rank order of toxicity to all species and life stages combined from most to least toxic was vanadium = zinc > selenite > lithium = uranium > selenate > boron. There was no difference between the three species in their sensitivity to the seven inorganics based on a rank-order evaluation at the species level. Colorado squawfish were 2-5 times more sensitive to selenate and selenite at the swimup life stage than older stages, whereas razorback suckers displayed equal sensitivity among life stages. Bonytail exhibited equal sensitivity to selenite, but were five times more sensitive to selenate at the swimup life stage than the older stages. Comparison of 96-hr LC50 values with a limited number of environmental water concentrations in Ashley Creek, Utah, which receives irrigation drainwater, revealed moderate hazard ratios for boron, selenate, selenite, and zinc, low hazard ratios for uranium and vanadium, but unknown ratios for lithium. These inorganic contaminants in drainwaters may adversely affect endangered fish in the Green River.

Genetic population structure of muskellunge in the Great Lakes

Science.gov (United States)

Kapuscinski, Kevin L.; Sloss, Brian L.; Farrell, John M.

2013-01-01

We quantified genetic relationships among Muskellunge Esox masquinongy from 15 locations in the Great Lakes to determine the extent and distribution of measurable population structure and to identify appropriate spatial scales for fishery management and genetic conservation. We hypothesized that Muskellunge from each area represented genetically distinct populations, which would be evident from analyses of genotype data. A total of 691 Muskellunge were sampled (n = 10–127/site) and genetic data were collected at 13 microsatellite loci. Results from a suite of analyses (including pairwise genetic differentiation, Bayesian admixture prediction, analysis of molecular variance, and tests of isolation by distance) indicated the presence of nine distinct genetic groups, including two that were approximately 50 km apart. Geographic proximity and low habitat complexity seemed to facilitate genetic similarity among areas, whereas Muskellunge from areas of greater habitat heterogeneity exhibited high differentiation. Muskellunge from most areas contained private alleles, and mean within-area genetic variation was similar to that reported for other freshwater fishes. Management programs aimed at conserving the broader diversity and long-term sustainability of Muskellunge could benefit by considering the genetically distinct groups as independent fisheries, and individual spawning and nursery habitats could subsequently be protected to conserve the evolutionary potential of Muskellunge.

Implementation of genetic conservation practices in a muskellunge propagation and stocking program

Science.gov (United States)

Jennings, Martin J.; Sloss, Brian L.; Hatzenbeler, Gene R.; Kampa, Jeffrey M.; Simonson, Timothy D.; Avelallemant, Steven P.; Lindenberger, Gary A.; Underwood, Bruce D.

2010-01-01

Conservation of genetic resources is a challenging issue for agencies managing popular sport fishes. To address the ongoing potential for genetic risks, we developed a comprehensive set of recommendations to conserve genetic diversity of muskellunge (Esox masquinongy) in Wisconsin, and evaluated the extent to which the recommendations can be implemented. Although some details are specific to Wisconsin's muskellunge propagation program, many of the practical issues affecting implementation are applicable to other species and production systems. We developed guidelines to restrict future broodstock collection operations to lakes with natural reproduction and to develop a set of brood lakes to use on a rotational basis within regional stock boundaries, but implementation will require considering lakes with variable stocking histories. Maintaining an effective population size sufficient to minimize the risk of losing alleles requires limiting broodstock collection to large lakes. Recommendations to better approximate the temporal distribution of spawning in hatchery operations and randomize selection of brood fish are feasible. Guidelines to modify rearing and distribution procedures face some logistic constraints. An evaluation of genetic diversity of hatchery-produced fish during 2008 demonstrated variable success representing genetic variation of the source population. Continued evaluation of hatchery operations will optimize operational efficiency while moving toward genetic conservation goals.

Thermoregulation and temperature relations of alligators and other large ectotherms inhabiting thermally stressed habitats. Annual progress report, July 1, 1975--June 30, 1976

Energy Technology Data Exchange (ETDEWEB)

Spotila, J.R.

1976-03-01

The effects of radiation and convection on the equilibrium body temperatures of alligators have been determined. Gaping has been shown to be an effective thermoregulatory device for retarding heat gain in the heads of these animals. Initial time dependent experiments have been completed and ketamine hydrochloride has been shown to be an effective anesthetic for alligators. Evaporative water loss rates have been measured as a function of size, temperature and wind speed for the turtle Chrysemys scripta. Convection coefficients have been determined and climate spaces are being formulated. Field studies are under way at the Savannah River Ecology Laboratory. Convection coefficients for largemouth bass, Micropterus salmoides change as a function of temperature and water speed. Steady state heat energy budgets have been computed for this fish. The effects of arsenic and temperature on the temperature tolerance of larval muskellunge, Esox masquinongy, have been determined. The thermal tolerances of several species of minnows have also been measured. The role of the skin in the control of evaporation from amphibians and reptiles has been assessed. During the past year one article has been published, two are in press, one is in review, and eight are in preparation. Five masters theses will be completed by July 1976.

Thermoregulation and temperature relations of alligators and other large ectotherms inhabiting thermally stressed habitats. Annual progress report, July 1, 1975--June 30, 1976

International Nuclear Information System (INIS)

Spotila, J.R.

1976-03-01

The effects of radiation and convection on the equilibrium body temperatures of alligators have been determined. Gaping has been shown to be an effective thermoregulatory device for retarding heat gain in the heads of these animals. Initial time dependent experiments have been completed and ketamine hydrochloride has been shown to be an effective anesthetic for alligators. Evaporative water loss rates have been measured as a function of size, temperature and wind speed for the turtle Chrysemys scripta. Convection coefficients have been determined and climate spaces are being formulated. Field studies are under way at the Savannah River Ecology Laboratory. Convection coefficients for largemouth bass, Micropterus salmoides change as a function of temperature and water speed. Steady state heat energy budgets have been computed for this fish. The effects of arsenic and temperature on the temperature tolerance of larval muskellunge, Esox masquinongy, have been determined. The thermal tolerances of several species of minnows have also been measured. The role of the skin in the control of evaporation from amphibians and reptiles has been assessed. During the past year one article has been published, two are in press, one is in review, and eight are in preparation. Five masters theses will be completed by July 1976

Brenda D. Phillips, Deborah S.K. Thomas, Alice Fothergill, Lynn Blinn‑Pike (orgs., Social Vulnerability to Disasters.

Directory of Open Access Journals (Sweden)

Susana Freiria

2012-10-01

Full Text Available Actualmente registam‑se em todo o mundo um número cada vez mais elevado de desastres e cujo impacto na vida das populações e nos seus bens é cada vez maior. Num cenário de catástrofe é importante conhecer os recursos humanos disponíveis, os cenários possíveis, os grupos mais vulneráveis em relação aos diversos perigos e quais as suas principais fragilidades. O livro Social Vulnerability to Disasters apresenta‑se como inovador na medida em que alia o conhecimento académico desenvolvido no âmb...

Remedial investigation/feasibility study for the David Witherspoon, Inc., 901 Site, Knoxville, Tennessee: Volume 1

Energy Technology Data Exchange (ETDEWEB)

NONE

1996-10-01

This remedial investigation (RI)/feasibility study (FS) supports the selection of remedial actions for the David Witherspoon, Inc. 901 Maryville Pike Site in Knoxville, Tennessee. Operations at the site, used as a recycling center, have resulted in past, present, and potential future releases of hazardous substances in to the environment. This Site is a Tennessee Superfund site. A phased approach was planned to (1) gather existing data from previous investigations managed by the Tenn. Dept. of Environment and Conservation; (2) perform a preliminary RI, including risk assessments, and an FS with existing data to identify areas where remedial action may be necessary; (3) gather additional field data to adequately define the nature and extent of risk-based contaminants that present identifiable threats to human and/or ecological receptors; and (4) develop remedial action alternatives to reduce risks to acceptable levels.

Scientific discussion | Unifying physics and technology in light of Maxwell's equations | Royal Society, London | 16-17 November

CERN Multimedia

2015-01-01

Discussion meeting organised by Professor Anatoly Zayats, Professor John Ellis and Professor Roy Pike.   16-17 November 2015 at The Royal Society 6-9 Carlton House Terrace, London Event details The unification of electric and magnetic fields about 150 years ago in what is now known as electromagnetic theory expressed in Maxwell's Equations has enabled virtually all modern electrical, electronic, radio and photonic technologies. What new scientific breakthroughs and applications will unification with the other fields provide? This meeting brings together high-energy, optical, quantum and solid-state physicists to discuss recent developments enabled by Maxwell's Equations and will try to predict future innovations. Attending this event This event is intended for researchers in relevant fields and is free to attend. There are a limited number of places and registration is essential. For more information, visit the Royal Society event website.

Geometric interpretation of the ratio of overall diameter to rim crest diameter for lunar and terrestrial craters.

Science.gov (United States)

Siegal, B. S.; Wickman, F. E.

1973-01-01

An empirical linear relationship has been established by Pike (1967) between the overall diameter and the rim crest diameter for rimmed, flat-floored as well as bowl-shaped, lunar and terrestrial craters formed by impact and explosion. A similar relationship for experimentally formed fluidization craters has been established by Siegal (1971). This relationship is examined in terms of the geometry of the crater and the slope angles of loose materials. The parameter varies from 1.40 to 1.65 and is found to be dependent on mean interior flat floor radius, exterior and interior rim slope angles, angle of aperture of the crater cone, and the volume fraction of crater void accounted for in the rim. The range of the observed parameter can be understood in terms of simple crater geometry by realistic values of the five parameters.

Remedial investigation/feasibility study for the David Witherspoon, Inc., 901 Site, Knoxville, Tennessee: Volume 1

International Nuclear Information System (INIS)

1996-10-01

This remedial investigation (RI)/feasibility study (FS) supports the selection of remedial actions for the David Witherspoon, Inc. 901 Maryville Pike Site in Knoxville, Tennessee. Operations at the site, used as a recycling center, have resulted in past, present, and potential future releases of hazardous substances in to the environment. This Site is a Tennessee Superfund site. A phased approach was planned to (1) gather existing data from previous investigations managed by the Tenn. Dept. of Environment and Conservation; (2) perform a preliminary RI, including risk assessments, and an FS with existing data to identify areas where remedial action may be necessary; (3) gather additional field data to adequately define the nature and extent of risk-based contaminants that present identifiable threats to human and/or ecological receptors; and (4) develop remedial action alternatives to reduce risks to acceptable levels

Hydrogeochemical and stream-sediment reconnaissance, orientation study, Ouachita Mountain area, Arkansas. National Uranium Resource Evaluation Program

International Nuclear Information System (INIS)

Steele, K.F.

1982-08-01

A hydrogeochemical ground water orientation study was conducted in the multi-mineralized area of the Ouachita Mountains, Arkansas in order to evaluate the usefulness of ground water as a sampling medium for uranium exploration in similar areas. Ninety-three springs and nine wells were sampled in Clark, Garland, Hot Springs, Howard, Montgomery, Pike, Polk, and Sevier Counties. Manganese, barite, celestite, cinnabar, stibnite, copper, lead, and zinc are present. The following parameters were determined: pH, conductivity, alkalinity, U, Br, Cl, F, He, Mn, Na, V, Al, Dy, NO 3 , NH 3 , SO 4 , and PO 4 . The minerals appear to significantly affect the chemistry of the ground water. This report is issued in draft form, without detailed technical and copy editing. This was done to make the report available to the public before the end of the National Uranium Resource Evaluation

Changes in the fish community and water quality during seven years of stocking piscivorous fish in a shallow lake

DEFF Research Database (Denmark)

Skov, Christian; Perrow, M.R.; Berg, Søren

2002-01-01

evaluated between predatory fish and potential prey and between zooplanktivorous or benthivorous fish and water quality parameters. In addition, potential consumption of piscivorous fishes was calculated. 3. The density of fish feeding on larger zooplankton or benthos (roach >15 cm, crucian carp >15 cm......1. Piscivores (annual stocking of 1000 individuals ha(-1) of 0+ pike and a single stocking of 30 kg ha(-1) of large 20-30 cm perch) were stocked in seven consecutive years in a shallow eutrophic lake in Denmark. The stocking programme aimed at changing food-web structure by reducing...... zooplanktivorous and benthivorous fish, with resultant effects on lower trophic levels and ultimately water quality. 2. The fish community and water quality parameters (Secchi depth, concentrations of total phosphorus, chlorophyll a and suspended solids) were monitored between 1996 and 2000 and relationships were...

Baltic Sea: Radionuclides

DEFF Research Database (Denmark)

Nielsen, Sven Poul; Lüning, Maria; Ilus, Erkki

2011-01-01

The most significant source of anthropogenic radioactivity in the Baltic Sea is fallout from the accident at the Chernobyl nuclear power plant in 1986. The second most important source is global fallout from atmospheric nuclear weapons tests carried out during the late 1950s and early 1960s...... about 14%. For 90Sr in the Baltic Sea, input from atmospheric fallout from nuclear weapons tests has contributed about 81%, while the contribution from Chernobyl fallout was about 13%. Cesium-137 is the main indicator of Baltic seawater with respect to anthropogenic radioactivity. The highest...... concentrations in seawater during 1999–2006 were found in the Baltic Proper and the Bothnian Sea. The general trend is steadily decreasing. Concentrations of anthropogenic radioactivity in fish generally show decreasing trends in agreement with concentrations in seawater. Among freshwater fish, pike showed large...

Baltic Sea: Radionuclides

DEFF Research Database (Denmark)

Nielsen, Sven Poul; Lüning, Maria; Ilus, Erkki

2010-01-01

The most significant source of anthropogenic radioactivity in the Baltic Sea is fallout from the accident at the Chernobyl nuclear power plant in 1986. The second most important source is global fallout from atmospheric nuclear weapons tests carried out during the late 1950s and early 1960s...... about 14%. For 90Sr in the Baltic Sea, input from atmospheric fallout from nuclear weapons tests has contributed about 81%, while the contribution from Chernobyl fallout was about 13%. Cesium-137 is the main indicator of Baltic seawater with respect to anthropogenic radioactivity. The highest...... concentrations in seawater during 1999–2006 were found in the Baltic Proper and the Bothnian Sea. The general trend is steadily decreasing. Concentrations of anthropogenic radioactivity in fish generally show decreasing trends in agreement with concentrations in seawater. Among freshwater fish, pike showed large...

TERNIRBU: Description of model and individual evaluation of model performance for scenario S

International Nuclear Information System (INIS)

Kanyar, B.; Fueloep, N.

1996-01-01

The compartmental model used is realized as a procedure of the general purpose code TAMDYN for simulation, sensitivity and uncertainty calculations of dynamic models. More details of the model structure and parameters are given in the description of the VAMP MP Scenario CB. The difference between the climate in Finland and Central Bohemia was taken into consideration by shifting the seasonality function with 12 days' according to the weekly average temperature. The lake system and the contamination of fishes was simulated by the model SIRATEC used and validated in the BIOMOVS Scenario A5. The model was extended to two fish-compartments for roach and pike ones as a catanary system. For simulations the code TAMDYN was used. The doses were estimated from the time integrated concentrations of the proper components multiplied by the dose conversion factor. 4 figs

Geodiversity of landforms within morphoclimatic zones of the Earth

Science.gov (United States)

Zwoliński, Zbigniew; Gudowicz, Joanna

2016-04-01

The aim of the paper is trying to calculate and classify geomorphometric parameters and on the basis of their values describe geodiversity of landforms within morphoclimatic zones. Morphoclimatic zone classifications by Büdel (1963), Tricart, Cailleux (1965) and Hagedorn, Poser (1974) were evaluated. Zonal morphological and climatic variation of the Earth reflects the spatial distribution of the nature and intensity of the ancient and modern processes of erosion, denudation and accumulation. Therefore, can be observing variation of landforms within particular zones. Morphoclimatic zones we digitized to get polygon vector layers with consistent coverage for the whole world. Elevation data we obtained from the Shuttle Radar Topography Mission (SRTM Version 4). The coverage of elevation data are between 56° S and 60° N. In order to look at maps of morphoclimatic zones multiple parameters were calculated. Primary parameters consisted of relative heights, slope, plan and profile curvature. We used in the analysis also the secondary parameters i.e. Topographic Wetness Index and Convergence Index. Within the analyzed zones we also compared automatic landform classification methods based on Topographic Position Index, Hammond's classification, unsupervised nested-means algorithm and a three part geometric signature: slope gradient, local convexity, and surface texture. For the primary and secondary parameters descriptive statistics such as minimum, maximum, range, mean, standard deviation within each morphoclimatic zone were calculated. Then the parameter maps have been classified on the basis of the natural distribution of Jenks method (1967). Within each morphoclimatic zone, area percentage was calculated for the derived classes of parameters, as well as the percentage of surface forms generated on the basis of automatic classification methods. Iwahashi, Pike (2007) obtained terrain class values, as well as terrain series values for the entire world (see the first row

CROATIAN FRESHWATER FISHERIES IN 1997

Directory of Open Access Journals (Sweden)

Mirko Turk

1998-10-01

Full Text Available Data on the production and fish catch according to species, on the surface of the fish ponds, on the means of fish catching and on the distribution of the production and the catch in 1997 is presented. The surface area used for production of fish has decreased for 836 ha or 8.40%. The total fish amount was bigger for 477 tons, or 10,52%. The feeding coefficient is 2.6 kg decreased 35% for in comparison to the bigger compared to the previous year. The amount of the fertilizer used is bigger for 37.30%. The fry carp growing ponds make up 6.50% of the total fish pond surfaces, the young carp ponds 22.04/0, and the ponds with consumption fish 70.31%. The total amount in the carp ponds was 446 kg/ha, and in the trout ponds it was 160.8 tons/ha. The most produced fish species is the carp with 79.32%, followed by the trout with 11.50%, the herbivorous fish with 4.25%, while all the other fish species make up 4.93% of the entire production. In the structure of herbivorous fish the grass carp is leading with 69,23%, followed by the big head carp with 29.74% and the silver carp with 1.03%. Compared to the previous year the production of the carp, grass carp and tench is increased. Fish catch in open waters has decreased by 5.53% in comparison to the previous year. In the production and catch of the total freshwater fish, carp made up 75.34%, herbivorous fish made up 3.89%, trout 10.66%, sheat fish, pike perch and pike 2.70% and all other fish species 7.41%. As far as the distribution of production and catch of fish is concerned, 52,80% were sold on the market, 37.94% were used for reproduction (stocking the fish farms, mortality was 1.43%, and for personal use (sports fishing 7.83%. The number of fisheries workers has decreased for 8.17%, and the production per worker is bigger for 22.25%, compared to the previous year. Average production per worker was 7.17% tons of fish.

Dietary LC-PUFA deficiency early in ontogeny induces behavioural changes in pike perch (Sander lucioperca) larvae and fry

DEFF Research Database (Denmark)

Lund, Ivar; Höglund, Erik; Ebbesson, Lars O.E.

2014-01-01

enriched with either refined olive oil high in oleic acid (A); refined olive oil supplemented with a low (B) or a high (C) level of DHA; or refined olive oil acid supplemented with fish oil with a high content of phospholipids (PL) and DHA (D). The enriched live diets were provided until 28days post hatch...... (dph), at which time larval behavioural responses to visual and mechano-sensory stimuli were assessed. All dietary groups were subsequently fed an identical enriched live feed (diet D) and gradually weaned to an extruded dry feed, on which they were maintained for 112days. At the end of this period...... that was not observed for larvae on diets low in DHA content. Independent of the predator simulation, larvae deficient or low in DHA exhibited significantly more time swimming along the edge of a test arena and had overall higher locomotor activities compared to larvae fed a diet with a high DHA content. Larvae on DHA...

Assessing effectiveness of electrical stunning and chillingin ice water of farmed yellowtail kingfish, common sole and pike-perch

NARCIS (Netherlands)

Llonch, P.; Lambooij, E.; Reimert, H.G.M.; Vis, van de J.W.

2012-01-01

Animals should be rendered unconscious before slaughter in order to avoid suffering or pain. The objective of this study was to evaluate an electrical stunning after dewatering to induce instantaneous unconsciousness and insensibility in yellowtail kingfish (Seriola lalandi), common sole (Solea

An ancient explanation of presbyopia based on binocular vision.

Science.gov (United States)

Barbero, Sergio

2014-06-01

Presbyopia, understood as the age-related loss of ability to clearly see near objects, was known to ancient Greeks. However, few references to it can be found in ancient manuscripts. A relevant discussion on presbyopia appears in a book called Symposiacs written by Lucius Mestrius Plutarchus around 100 A.C. In this work, Plutarch provided four explanations of presbyopia, associated with different theories of vision. One of the explanations is particularly interesting as it is based on a binocular theory of vision. In this theory, vision is produced when visual rays, emanating from the eyes, form visual cones that impinge on the objects to be seen. Visual rays coming from old people's eyes, it was supposed, are weaker than those from younger people's eyes; so the theory, to be logically coherent, implies that this effect is compensated by the increase in light intensity due to the overlapping, at a certain distance, of the visual cones coming from both eyes. Thus, it benefits the reader to move the reading text further away from the eyes in order to increase the fusion area of both visual cones. The historical hypothesis taking into consideration that the astronomer Hipparchus of Nicaea was the source of Plutarch's explanation of the theory is discussed. © 2013 Acta Ophthalmologica Scandinavica Foundation. Published by John Wiley & Sons Ltd.

Sox2 is translationally activated by eukaryotic initiation factor 4E in human glioma-initiating cells

Energy Technology Data Exchange (ETDEWEB)

Ge, Yuqing; Zhou, Fengbiao; Chen, Hong; Cui, Chunhong; Liu, Dan [Key Laboratory of Glycoconjuates Research, Ministry of Public Health and Gene Research Center, Shanghai Medical College of Fudan University, Shanghai 200032 (China); Li, Qiuping [Zhongshan Hospital of Fudan University, Shanghai 200032 (China); Yang, Zhiyuan; Wu, Guoqiang [Key Laboratory of Glycoconjuates Research, Ministry of Public Health and Gene Research Center, Shanghai Medical College of Fudan University, Shanghai 200032 (China); Sun, Shuhui [Key Laboratory of Medical Molecular Virology, Ministry of Education and Health, Shanghai Medical College of Fudan University, Shanghai 200032 (China); Gu, Jianxin [Key Laboratory of Glycoconjuates Research, Ministry of Public Health and Gene Research Center, Shanghai Medical College of Fudan University, Shanghai 200032 (China); Institutes of Biomedical Sciences of Fudan University, Shanghai 200032 (China); Wei, Yuanyan, E-mail: yywei@fudan.edu.cn [Key Laboratory of Glycoconjuates Research, Ministry of Public Health and Gene Research Center, Shanghai Medical College of Fudan University, Shanghai 200032 (China); Jiang, Jianhai, E-mail: jianhaijiang@fudan.edu.cn [Key Laboratory of Glycoconjuates Research, Ministry of Public Health and Gene Research Center, Shanghai Medical College of Fudan University, Shanghai 200032 (China)

2010-07-09

Sox2, a master transcription factor, contributes to the generation of induced pluripotent stem cells and plays significant roles in sustaining the self-renewal of neural stem cells and glioma-initiating cells. Understanding the functional differences of Sox2 between glioma-initiating cells and normal neural stem cells would contribute to therapeutic approach for treatment of brain tumors. Here, we first demonstrated that Sox2 could contribute to the self-renewal and proliferation of glioma-initiating cells. The following experiments showed that Sox2 was activated at translational level in a subset of human glioma-initiating cells compared with the normal neural stem cells. Further investigation revealed there was a positive correlation between Sox2 and eukaryotic initiation factor 4E (eIF4E) in glioma tissues. Down-regulation of eIF4E decreased Sox2 protein level without altering its mRNA level in glioma-initiating cells, indicating that Sox2 was activated by eIF4E at translational level. Furthermore, eIF4E was presumed to regulate the expression of Sox2 by its 5' untranslated region (5' UTR) sequence. Our results suggest that the eIF4E-Sox2 axis is a novel mechanism of unregulated self-renewal of glioma-initiating cells, providing a potential therapeutic target for glioma.

Potential risk to wood storks (Mycteria americana) from mercury in Carolina Bay fish

International Nuclear Information System (INIS)

Brant, H.A.; Jagoe, C.H.; Snodgrass, J.W.; Bryan, A.L.; Gariboldi, J.C.

2002-01-01

Fish mercury levels from some Carolina bays pose risk to wood stork. - Carolina bays are freshwater wetlands that serve as important feeding habitats for the endangered wood stork (Mycteria americana). Water levels in these bays fluctuate greatly and tend to be acidic and rich in dissolved organic carbon (DOC), factors that favor mercury (Hg) methylation and bioaccumulation in fish. To assess potential risks to wood storks consuming mercury contaminated fish in bays, we sampled fish from 10 bays on the Savannah River Site (SRS), South Carolina, an area with documented use by wood storks. Whole body mercury concentrations in 258 fishes of three species (Erimyzon sucetta, Acantharchus pomotis and Esox americanus) commonly consumed by wood storks were determined. Risk factors for nestlings and free-ranging adults were calculated using published no and lowest observable adverse effect concentration (NOAEC and LOAEC) values for birds. Fish from higher trophic levels and those from wetlands with relatively shallow maximum depths and fluctuating water levels were more likely to exceed NOAEC and LOAEC values. Calculation of exposure rates of nestling wood storks indicated they are at highest risk during the first 10 days of the nestling period. These calculations suggest that there is potential concern for wood storks foraging in relatively shallow bays with fluctuating water levels, even though there is no obvious local source of mercury to these wetlands

Effects of consumption-oriented versus trophy-oriented fisheries on Muskellunge population size structure in northern Wisconsin

Science.gov (United States)

Faust, Matthew D.; Hansen, Michael J.

2016-01-01

To determine whether a consumption-oriented fishery was compatible with a trophy-oriented fishery for Muskellunge Esox masquinongy, we modeled effects of a spearing fishery and recreational angling fishery on population size structure (i.e., numbers of fish ≥ 102, 114, and 127 cm) in northern Wisconsin. An individual-based simulation model was used to quantify the effect of harvest mortality at currently observed levels of recreational angling and tribal spearing fishery exploitation, along with simulated increases in exploitation, for three typical growth potentials (i.e., low, moderate, and high) of Muskellunge in northern Wisconsin across a variety of minimum length limits (i.e., 71, 102, 114, and 127 cm). Populations with moderate to high growth potential and minimum length limits ≥ 114 cm were predicted to have lower declines in numbers of trophy Muskellunge when subjected to angling-only and mixed fisheries at observed and increased levels of exploitation, which suggested that fisheries with disparate motivations may be able to coexist under certain conditions such as restrictive length limits and low levels of exploitation. However, for most Muskellunge populations in northern Wisconsin regulated by a 102-cm minimum length limit, both angling and spearing fisheries may reduce numbers of trophy Muskellunge as larger declines were predicted across all growth potentials. Our results may be useful if Muskellunge management options in northern Wisconsin are re-examined in the future.

Sox2 is translationally activated by eukaryotic initiation factor 4E in human glioma-initiating cells

International Nuclear Information System (INIS)

Ge, Yuqing; Zhou, Fengbiao; Chen, Hong; Cui, Chunhong; Liu, Dan; Li, Qiuping; Yang, Zhiyuan; Wu, Guoqiang; Sun, Shuhui; Gu, Jianxin; Wei, Yuanyan; Jiang, Jianhai

2010-01-01

Sox2, a master transcription factor, contributes to the generation of induced pluripotent stem cells and plays significant roles in sustaining the self-renewal of neural stem cells and glioma-initiating cells. Understanding the functional differences of Sox2 between glioma-initiating cells and normal neural stem cells would contribute to therapeutic approach for treatment of brain tumors. Here, we first demonstrated that Sox2 could contribute to the self-renewal and proliferation of glioma-initiating cells. The following experiments showed that Sox2 was activated at translational level in a subset of human glioma-initiating cells compared with the normal neural stem cells. Further investigation revealed there was a positive correlation between Sox2 and eukaryotic initiation factor 4E (eIF4E) in glioma tissues. Down-regulation of eIF4E decreased Sox2 protein level without altering its mRNA level in glioma-initiating cells, indicating that Sox2 was activated by eIF4E at translational level. Furthermore, eIF4E was presumed to regulate the expression of Sox2 by its 5' untranslated region (5' UTR) sequence. Our results suggest that the eIF4E-Sox2 axis is a novel mechanism of unregulated self-renewal of glioma-initiating cells, providing a potential therapeutic target for glioma.

Total mercury and mercury species in birds and fish in an aquatic ecosystem in the Czech Republic

International Nuclear Information System (INIS)

Houserova, Pavlina; Kuban, Vlastimil; Kracmar, Stanislav; Sitko, Jilji

2007-01-01

Total mercury and mercury species (methylmercury-MeHg, inorganic mercury - Hg 2+ ) were determined in the aquatic ecosystem Zahlinice (Czech Republic). Four tissues (muscle, intestines, liver and kidney) of three bird species - cormorant, great crested grebe and Eurasian buzzard, muscle tissues of common carp, grass carp, northern pike, goldfish, common tench, perch and rudd, aquatic plants (reed mace and common reed), sediments and water were analysed. Relative contents of MeHg (of total Hg) were in the range from 71% to 94% and from 15% up to 62% in the muscle and intestines and in liver, respectively, for all birds. Statistically significant differences were found between contents of MeHg in liver tissues of young and adult cormorant populations (F 4.6 = 56.71, P -5 ). Relative contents of MeHg in muscle tissues of fishes were in the range from 65.1% to 87.9% of total Hg. - The distribution of the mercury species among the organs of the individual birds is discussed

Study seeks to boost Appalachian gas recovery

International Nuclear Information System (INIS)

Land, R.

1992-01-01

Ashland Exploration Inc. and the Gas Research Institute (GRI) are trying to find ways to increase gas recovery in the Appalachian basin. They are working together to investigate Mississippian Berea sandstone and Devonian shale in a program designed to achieve better understanding and improved performance of tight natural gas formations in the area. This paper reports that three wells on Ashland Exploration acreage in Pike County, Ky., are involved in the research program. Findings from the first two wells will be used to optimize evaluation and completion of the third well. The first two wells have been drilled. Drilling of the third well was under way at last report. Ashland Exploration has been involved with GRI's Devonian shale research since 1988. GRI's initial focus was on well stimulation because Devonian shale wells it reviewed had much lower recoveries than could be expected, based on estimated gas in place. Research during the past few years was designed to improve the execution and quality control of well stimulation

Corrective Action Decision Document/Closure Report for Corrective Action Unit 569: Area 3 Yucca Flat Atmospheric Test Sites Nevada National Security Site, Nevada with ROTC 1, Revision 0

Energy Technology Data Exchange (ETDEWEB)

Sloop, Christy

2013-04-01

This Corrective Action Decision Document/Closure Report presents information supporting the closure of Corrective Action Unit (CAU) 569: Area 3 Yucca Flat Atmospheric Test Sites, Nevada National Security Site, Nevada. CAU 569 comprises the following nine corrective action sites (CASs): • 03-23-09, T-3 Contamination Area • 03-23-10, T-3A Contamination Area • 03-23-11, T-3B Contamination Area • 03-23-12, T-3S Contamination Area • 03-23-13, T-3T Contamination Area • 03-23-14, T-3V Contamination Area • 03-23-15, S-3G Contamination Area • 03-23-16, S-3H Contamination Area • 03-23-21, Pike Contamination Area The purpose of this Corrective Action Decision Document/Closure Report is to provide justification and documentation supporting the recommendation that no further corrective action is needed for CAU 569 based on the implementation of the corrective actions listed in Table ES-2.

Development of a bioassay using walleye (Sander vitreus) to assess the toxicity of oil sands sediments

Energy Technology Data Exchange (ETDEWEB)

Turcotte, D.; Yuan, H.; Tumber, V.; Parrott, J. [Environment Canada, Ottawa, ON (Canada); Raine, J. [Saskatchewan Univ., Saskatoon, SK (Canada)

2010-07-01

This study examined the effects of sediments from the Athabasca oil sands area on fish development and survival. Walleye (Sander vitreus) which inhabit the Athabasca River are exposed to natural sources of bitumen eroding from the McMurray formation. This study described the design and implementation of a daily-renewal bioassay to evaluate the potential effects of toxicants on walleye development. Eggs were collected and fertilized with milt from spawning wild walleye captured from Lake Diefenbaker in Saskatchewan. The fertilized eggs were exposed to different concentrations of sediments or culture water only (negative controls) until complete yolk absorption of control fish. The walleye embryos were fed brine shrimp daily after hatching and the developing fish were examined for morphological deformities, survival, hatching success, and changes in weight and length between treatments. Organics concentrations in fish tissues and water were measured when possible. Fathead minnows and northern pikes will also be exposed to the same sediments in order to compare the relative sensitivity of the three species.

Heterosis for yield and its components in bread wheat crosses among powdery mildew resistant and susceptible genotypes

International Nuclear Information System (INIS)

Ilker, E.; Tonk, F.A.; Tosun, M.

2010-01-01

The objective of this research was to investigate heterotic effects between five powdery mildew resistant wheat lines derived from CIMMYT and three susceptible commercial wheat varieties growing in Turkey and to determine mode of gene actions of the parents for yield characters in F1 generation. All 15 F1 crosses and their parents were planted in randomized complete block design in three replications. Measurements were done for plant height, pike length, spike let and kernel number per spike, grain weight per spike and 1000-kernel weight. Promising findings of the crosses 72 x Golia, 70 x Golia, 70 x Basribey, 48 x Basribey, 48 x Atilla-12 and 72 x Atilla12 were obtained to breed new varieties or pure lines having shorter plant height and taller spike length, more number of spike let and kernel per spike, besides higher grain yield than their mid or better parents to improve powdery mildew resistant varieties. (author)

Propagation and isolation of ranaviruses in cell culture

DEFF Research Database (Denmark)

Ariel, Ellen; Nicolajsen, Nicole; Christophersen, Maj-Britt

2009-01-01

The optimal in vitro propagation procedure for a panel of ranavirus isolates and the best method for isolation of Epizootic haematopoietic necrosis virus (EHNV) from organ material in cell-culture were investigated. The panel of ranavirus isolates included: Frog virus 3 (FV3), Bohle iridovirus (BIV......), Pike-perch iridovirus (PPIV), European catfish virus (ECV), European sheatfish virus (ESV), EHNV, Doctor fish virus (DFV), Guppy virus 6 (GF6), short-finned eel virus (SERV) and Rana esculenta virus Italy 282/102 (REV 282/102). Each isolate was titrated in five cell lines: bluegill fry (BF-2......), epithelioma papulosum cyprini (EPC), chinook salmon embryo (CHSE-214) rainbow trout gonad (RTG-2) and fathead minnow (FHM), and incubated at 10, 15, 20, 24 and 28 °C for two weeks. BF-2, EPC and CHSE-214 cells performed well and titers obtained in the three cell lines were similar, whereas FHM and RTG-2 cells...

CROATIAN FRESHWATER FISHERIES IN 1996.

Directory of Open Access Journals (Sweden)

Mirko Turk

1997-07-01

Full Text Available Data on the production and fish catch according to species, on the surface of the fish ponds, on the means of fish catching and on the distribution of the production and the catch in 1996 is presented. The surface area used for production of fish has decreased by 1357 ha or 11.99%. The total fish amount has decreased by 1,921.00 tons or 29.76%. The feeding coefficient is 4 kg (33.33% bigger compared to the previous year. The amount of the fertilizer used has decreased by 18.79%. The fry carp growing ponds make up 5.99% of the total fish pond surfaces, the young carp ponds 21.13%, and the ponds with consumption fish 71.53%. The total fish amount in the carp ponds was 376 kg/ha, and in the trout ponds it was 146.6 tons/ha. The most produced fish species is the carp with 82.21 %, followed by the trout with 8.57%, the herbivorous fish with 4.78%, while all the other fish species make up 4.44% of the entire production. In the structure of herbivorous fish the grass carp is leading with 64,28%, followed by the big head carp with 26.02% and the silver carp with 9.70%. Compared to the previous year the production of the trout and tench has somewhat increased, while the production of all the other species of fish has decreased. Fish catch in open waters has increased by 19.23% in comparison to the previous year. In the production and catch of the total freshwater fish, carp made up 77.46%, the herbivorous fish made up 4.32%, trout 4.32%, sheat fish, pike perch and pike 2.99% and all other fish species 7.36%. As far as the distribution of production and catch is concerned, 46.91% were sold on the market, 39.19% were used for reproduction (stocking the fish farms, mortalities were 6.23%, and for personal use (sports fishing 7.67% was used. The number of fisheries workers has decreased by 17.75%, and the production per worker has also decreased by 26.62%, compared to the previous year. Average production per worker was 5.87 tons of fish.

Toxicity of inorganic contaminants, individually and in environmental mixtures, to three endangered fishes (Colorado squawfish, bonytail, and razorback sucker)

Science.gov (United States)

Buhl, Kevin J.; Hamilton, S.J.

1996-01-01

Two life stages of three federally-listed endangered fishes, Colorado squawfish (Ptychocheilus lucius), bonytail (Gila elegans), and razorback sucker (Xyrauchen texanus) were exposed to copper, selenate, selenite, and zinc individually, and to mixtures of nine inorganics in a reconstituted water that simulated the water quality of the middle Green River, Utah. The mixtures simulated environmental ratios of arsenate, boron, copper, molybdenum, selenate, selenite, uranium, vanadium, and zinc in two tributaries, Ashley Creek and Stewart Lake outlet, of the middle Green River. The rank order of toxicity of the individual inorganics, from most to least toxic, was: copper > zinc > selenite > selenate. Colorado squawfish larvae were more sensitive to all four inorganics and the two mixtures than the juveniles, whereas there was no consistent response between the two life stages for the other two species. There was no consistent difference in sensitivity to the inorganics among the three endangered fishes. Both mixtures exhibited either additive or greater than additive toxicity to these fishes. The primary toxic components in the mixtures, based on toxic units, were copper and zinc. Acute toxicity values were compared to measured environmental concentrations in the two tributaries to derive margins of uncertainty. Margins of uncertainty were low for both mixtures (9–22 for the Stewart Lake outlet mixture, and 12–32 for the Ashley Creek mixture), indicating that mixtures of inorganics derived from irrigation activities may pose a hazard to endangered fishes in the Green River.

Archaeogeophysical Surveys on Mersin, Silifke, Uzuncaburç (Diokaisareia) Zeus Olbios Temple

Science.gov (United States)

Ahmet Yüksel, Fethi; Deniz, Hazel; Şahin, Hamdi

2017-04-01

The ancient city of Diocaesarea (Uzuncaburç), located 30 km north Silifke in Mersin, was a temple centre subjected to Olba in the Hellenistic period. It was declared as free city by Tiberius in the Early Imperial period and it flourished until the 5th century AD. During this period, a Thykhaion to the west of the city was built in the 1st century AD by Obrimos and his son Oppius from his wife Kyria, daughter of Leonidas. A theater was also erected in the co-reign of Marcus Aurelius and Lucius Verus and the city gate in the west of Diocaesarea was repaired under Arcadius and Honorius (396-408 AD). It was financed by the dux ad comes of Isauria, Leontios. In July 2011, archaeogeophysical measurements were made on the columns of the town of Zeus Olbios and on the peripteral Street of the city by magnetic methods. The purpose of these investigations is to determine the presence of architectural remains under the ground at the points specified. G-858 Cesium Gradiometer (G-858 Cesium Gradiometer) was used for magnetic measurement. These measurements were made on 38 pitches of 20 m length in Zeus Olbios temple on 13 creeks of 160 m length on the city's columned street. obtained sub-sensor, top sensor and gradient magnetic maps are created. Linear, angular locations with high susceptibilty were identified on magnetic maps. Keywords: Magnetic, Diokaisareia (Uzuncahurç), Archaeogeophysics, Archaeology, Cesium Gradiometer

Electoral system and electoral campaign in Ancient Rome

Directory of Open Access Journals (Sweden)

Notari Tamaš

2011-01-01

Full Text Available One of the most famous orators of the Antiquity, Marcus Tullius Cicero entered the election for the consul's position held in 64 B.C. arranged under extremely disturbed circumstances and he won the consulatus for 63 B.C. Difficulties were caused among others by the fact that an indebted nobleman called Lucius Sergius Catilina saw the only breakthrough for ensuring his political and financial survival in being elected consul, and manifested that in case he would lose he would be willing to take as well violent actions (later, he actually carried out his threats. The orator's younger brother, Quintus Tullius Cicero wanted to help his brother in his campaign foreseen as having quite a lot of turns; so, he wrote a manual for him on the lawful and illegal instruments that could be used in the elections. This work, Commentariolum petitionis (A Handbook for Applicants for Offices is the first summary of campaign strategy in the history of mankind. In addition to the evaluation of the given situation, the presentation (and exploitation of the weaknesses of counter nominees, the book provides advice on several counts that might possibly continue to have relevance even today. We do not know to what extent the experienced politician, Cicero adhered to his younger brother's advice; it is, however, a fact that he was elected consul, and as a consul he defeated Catilina's revolt in. 63 B.C.

Effect of acclimation on the temperature tolerance of young muskellunge fry

International Nuclear Information System (INIS)

Hassan, K.C.; Spotila, J.R.

1976-01-01

Temperature tolerances of newly hatched muskellunge fry (Esox masquinongy) were determined in the laboratory. Three groups of fry were reared in a closed tank system under controlled environmental conditions for 31 days at 7, 15, and 25 0 C. The photoperiod was 12 hr of light alternating with 12 hr of darkness (L--D, 12:12). Biweekly water samples were taken to monitor the closed tank systems. Parameters measured were dissolved oxygen, alkalinity, pH, organic and nitrate nitrogen, phosphates, and ammonia, all of which were in normal concentrations. Critical thermal maximum (CTM) was used to indicate temperature tolerance. Experimental fish reared at 25 0 C exhibited the highest temperature tolerance (33.2 to 36.1 0 C) throughout their development. The CTM values for the 15 0 C experimental fish ranged from 29.8 to 34.4 0 C. These fish exhibited a decrease in temperature tolerance during their swim-up stage, followed by a slow recovery period indicated by a general increase in CTM values. Two days after the experiment began, 7 0 C experimental fry entered a torpid state that lasted for 10 days and was followed by a general decrease in thermal tolerance and a high mortality rate. The CTM values for this group ranged from an initial high of 34.0 0 C on the first day to 27.2 0 C at the termination of the experiment. Development never reached the free-swimming stage

Social learning in a high-risk environment: incomplete disregard for the 'minnow that cried pike' results in culturally transmitted neophobia.

Science.gov (United States)

Crane, Adam L; Mathiron, Anthony G E; Ferrari, Maud C O

2015-08-07

Many prey species rely on conspecifics to gather information about unknown predation threats, but little is known about the role of varying environmental conditions on the efficacy of social learning. We examined predator-naive minnows that had the opportunity to learn about predators from experienced models that were raised in either a low- or high-risk environment. There were striking differences in behaviour among models; high-risk models showed a weaker response to the predator cue and became neophobic in response to the control cue (a novel odour, NO). Observers that were previously paired with low-risk models acquired a strong antipredator response only to the predator cue. However, observers that interacted with high-risk models, displayed a much weaker response to the predator odour and a weak neophobic response to the NO. This is the first study reporting such different outcomes of social learning under different environmental conditions, and suggests high-risk environments promote the cultural transmission of neophobia more so than social learning. If such a transfer can be considered similar to secondary traumatization in humans, culturally transmitted neophobia in minnows may provide a good model system for understanding more about the social ecology of fear disorders. © 2015 The Author(s).

Total mercury and mercury species in birds and fish in an aquatic ecosystem in the Czech Republic

Energy Technology Data Exchange (ETDEWEB)

Houserova, Pavlina [Department of Chemistry and Biochemistry, Mendel University of Agriculture and Forestry, Zemedelska 1, CZ-613 00 Brno (Czech Republic); Kuban, Vlastimil [Department of Chemistry and Biochemistry, Mendel University of Agriculture and Forestry, Zemedelska 1, CZ-613 00 Brno (Czech Republic)]. E-mail: kuban@mendelu.cz; Kracmar, Stanislav [Department of Animal Nutrition, Mendel University of Agriculture and Forestry, Zemedelska 1, CZ-613 00 Brno (Czech Republic); Sitko, Jilji [Commenius Museum, Moravian Ornithological Station, Horni nam. 1, Prerov CZ-751 52 (Czech Republic)

2007-01-15

Total mercury and mercury species (methylmercury-MeHg, inorganic mercury - Hg{sup 2+}) were determined in the aquatic ecosystem Zahlinice (Czech Republic). Four tissues (muscle, intestines, liver and kidney) of three bird species - cormorant, great crested grebe and Eurasian buzzard, muscle tissues of common carp, grass carp, northern pike, goldfish, common tench, perch and rudd, aquatic plants (reed mace and common reed), sediments and water were analysed. Relative contents of MeHg (of total Hg) were in the range from 71% to 94% and from 15% up to 62% in the muscle and intestines and in liver, respectively, for all birds. Statistically significant differences were found between contents of MeHg in liver tissues of young and adult cormorant populations (F {sub 4.6} = 56.71, P < 10{sup -5}). Relative contents of MeHg in muscle tissues of fishes were in the range from 65.1% to 87.9% of total Hg. - The distribution of the mercury species among the organs of the individual birds is discussed.

Vertebrate behavior and ecology. Progress report, 1 July 1978--30 June 1979

Energy Technology Data Exchange (ETDEWEB)

Tester, J.R.; Siniff, D.B.

1979-07-01

Efforts in engineering design and development this year emphasized improvement in the quality and versatility of radio transmitters, use of microprocessors in an automated fish tracking system, and construction of an automated system to monitor movements and activities of aquatic mammals in response to water temperature. Improved radio transmitters were used on a variety of species including sea otters, manatees, and wall-eyed pike. The fish tracking system, installed at Monticello, Minnesota, will next be modified for monitoring marine mammal movements. The temperature data logging system was tested on manatees in the St. John River near Blue Springs, Florida. The long-term goal in the subproject on evaluation of census methods is to utilize the extensive experience, technology, and equipment developed over the years in radio telemetry to resolve basic problems in animal census and population study methods. During the past year, efforts have resulted in information on activity patterns and the behavioral repertoire of sea otters and on the response of otters to contamination by Alaskan crude oil. Three preliminary manuscripts presented as part of this report describe these aspects in detail.

Streetcar Desires: The Death of the Arlington Streetcar and the Cultural Politics of Smart Growth Development

Directory of Open Access Journals (Sweden)

Timothy A. Gibson

2017-09-01

Full Text Available In 2014, Arlington County—an affluent suburb of Washington, DC—became embroiled in a bitter political debate over a proposed streetcar line on Columbia Pike, a street that traverses some of the County’s last remaining working-class and new immigrant neighborhoods. Viewed alternatively as vanguard for gentrification, a symbol of sustainable development, and a big government boondoggle, the proposed streetcar brought to the surface ideological and class antagonisms which are typically muted in Arlington’s broadly liberal-progressive political culture. Drawing on comments posted on a local news blog as well as interviews with advocates, this paper examines the streetcar debate through the lens of Stuart Hall’s theory of articulation and Janice Radway’s metaphor of “ideological seams.” In particular, the paper explores how streetcar opponents wove together an unlikely rhetorical fabric, intertwining fears of gentrification, a critique of “big government,” and a rearguard defense of suburban automobility. A concluding section discusses what the death of the Arlington Streetcar can reveal about the cultural politics of smart growth development and sustainable urban planning.

Comparative study of freshwater crayfish, Cherax spp. (crustaceae: decapoda: parastacidae) from Papua, Indonesia based on length-weight analysis

Science.gov (United States)

Hamidah, H.; Abinawanto, Bowolaksono, A.

2017-07-01

The freshwater crayfish is one of the most important fish species as the protein resources. Lake and rivers are the habitat of crayfish in Papua. Morphological characters of crayfish, such as color, total body lengths (L) and body weight (W) were influenced by the habitat. The purpose of the study, therefore, was to compare the total body length and body weight as well as the unique color of crayfish from Uter lake (Atinjo district), Seremuk river (Haha village), Baliem river (Pike village; Hubukiak district, Jayawijaya), and Baliem river (Wesaput village; Wesaput district). Length-weight (body length; LB versus wet weight; WWT) relationships were determined for male and female crayfish (Cherax spp.) The length-weight relationships of total individuals was W = 0,022215.L3,159. This regression differed significantly (R2 = 97.5 %) between locations. Both males and females exhibited positive allometric growth as statistical difference was observed in the mean of the wet weight and body length between males and females. Besides, Canonical function was subjected to determine population distribution based on length-weight data.

Uranium favorability of precambrian rocks in the Badger Flats - Elkhorn Thrust Area, Park and Teller Counties, Colorado

International Nuclear Information System (INIS)

Gallagher, G.L.

1976-10-01

The area is approximately 1,800 square miles and extends from Cripple Creek northward to Fairplay and Bailey. The Precambrian rocks include the metamorphic sequences of the Idaho Springs Formation and the Boulder Creek Granodiorite, Silver Plume Granite, Pikes Peak Granite, and Redskin Granite. The known uranium deposits in the area include six vein deposits, three pegmatite occurrences, and one zone of probable secondary enrichment; they have not yielded any significant production. The vein deposits are probably the result of downward percolation of ground water. The zone of secondary uranium enrichment may have formed above a volcanic pipe, vein, or tuffaceous lake bed. Favorability in the area is considered good for both vein and large, disseminated, low-grade uranium deposits. On the bases of known uranium occurrences, favorable structures and host rocks, and a water-sampling program, recommendations are given for exploration. The occurrences in the area have substantial similarities with the Rossing deposit in South-West Africa and the Wheeler Basin uranium occurrence in Grand County, Colorado. 6 figures, 9 tables

Galen and the beginnings of Western physiology.

Science.gov (United States)

West, John B

2014-07-15

Galen (129-c. 216 AD) was a key figure in the early development of Western physiology. His teachings incorporated much of the ancient Greek traditions including the work of Hippocrates and Aristotle. Galen himself was a well-educated Greco-Roman physician and physiologist who at one time was a physician to the gladiators in Pergamon. Later he moved to Rome, where he was associated with the Roman emperors Marcus Aurelius and Lucius Verus. The Galenical school was responsible for voluminous writings, many of which are still extant. One emphasis was on the humors of the body, which were believed to be important in disease. Another was the cardiopulmonary system, including the belief that part of the blood from the right ventricle could enter the left through the interventricular septum. An extraordinary feature of these teachings is that they dominated thinking for some 1,300 years and became accepted as dogma by both the State and Church. One of the first anatomists to challenge the Galenical teachings was Andreas Vesalius, who produced a magnificent atlas of human anatomy in 1543. At about the same time Michael Servetus described the pulmonary transit of blood, but he was burned at the stake for heresy. Finally, with William Harvey and others in the first part of the 17th century, the beginnings of modern physiology emerged with an emphasis on hypotheses and experimental data. Nevertheless, vestiges of Galen's teaching survived into the 19th century. Copyright © 2014 the American Physiological Society.

Core Muscle Activation in Suspension Training Exercises.

Science.gov (United States)

Cugliari, Giovanni; Boccia, Gennaro

2017-02-01

A quantitative observational laboratory study was conducted to characterize and classify core training exercises executed in a suspension modality on the base of muscle activation. In a prospective single-group repeated measures design, seventeen active male participants performed four suspension exercises typically associated with core training (roll-out, bodysaw, pike and knee-tuck). Surface electromyographic signals were recorded from lower and upper parts of rectus abdominis, external oblique, internal oblique, lower and upper parts of erector spinae muscles using concentric bipolar electrodes. The average rectified values of electromyographic signals were normalized with respect to individual maximum voluntary isometric contraction of each muscle. Roll-out exercise showed the highest activation of rectus abdominis and oblique muscles compared to the other exercises. The rectus abdominis and external oblique reached an activation higher than 60% of the maximal voluntary contraction (or very close to that threshold, 55%) in roll-out and bodysaw exercises. Findings from this study allow the selection of suspension core training exercises on the basis of quantitative information about the activation of muscles of interest. Roll-out and bodysaw exercises can be considered as suitable for strength training of rectus abdominis and external oblique muscles.

Organic environmental poisons in Norwegian freshwater fish

International Nuclear Information System (INIS)

2002-01-01

According to this article, the level of organic poisons in Norwegian freshwater fish is, on the whole, is too small to threaten human health. It has been found, however, that liver from some species such as burbot, from some lakes, should not be eaten. These lakes are found to contain higher levels of PCB (polychlorinated biphenyls) and DDT (dichlorodiphenyltrichloroethane). Previously, pregnant or breast-feeding women anywhere in Norway have been advised not to eat pike, large perch or large trout because of too much mercury. Other people should not eat these species more often than once per month. In general, the level of organic environmental poisons is higher in the southern part of the country than in the northern part. The sediments of the lakes in large parts of South Norway are contaminated with lead, mercury and cadmium as compared with the conditions before the industrial revolution. However, the level of metals in the lake sediments are relatively low, and these substances are unlikely to appear in the food chain, by and large. The anthropogenic emission of lead was insignificant before the industrial revolution. The exception of lead from German mining industry in the 1700s

Paleoseismic evidence in the segment of fault Sopetran or San Jeronimo Network 5

International Nuclear Information System (INIS)

Lalinde, Claudia; Gonzalez, Adriana; Caballero, Humberto

2009-01-01

The area Metropolitana did a seismic Hazard study of Barbosa, Girardota, Copacabana, Sabaneta, La Estrella, Caldas y Envigado towns additional to Studies did in years 1999 and 2002. Solingral, Integral, Inteinsa, Universidad Nacional y Universidad Eafit, did the study for Area Metropolitana. This work present the paleoseismic evidence found in the road Conexion Vial Aburra Cauca in the south side of the pike site in the west side of the tunnel. This evidence is associated with the Sopetran Fault or Segment 5 San Jeronimo Fault, which has 25km length. The paleoseismic interpretation identifies two seismic events in the last 10.000 years. The oldest is an event of Mw 6.4 magnitude that displaced the last volcanic ash layer between 10.000 and 5.000 years considering that the last volcanic ash layer fallow 10.000 year ago, they appear reworking, it is width and is covered by paleosoil. The most recent event is an event of Mw 6.7 magnitude and displaced the paleosoil which was dated by 1830±40BP C14 so the last event occurs in the last 1800 years.

Hunters, herders and hearths: interpreting new results from hearth row sites in Pasvik, Arctic Norway

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Sven-Donald Hedman

2015-02-01

Full Text Available The transition from hunting to reindeer herding has been a central topic in a number of archaeological works. Recently conducted archaeological investigation of two interior hearth row sites in Pasvik, Arctic Norway, have yielded new results that add significantly to the discussion. The sites are dated within the period 1000-1300 AD, and are unique within this corpus due to their rich bone assemblages. Among the species represented, reindeer is predominant (87 %, with fish (especially whitefish and pike as the second most frequent category. Even sheep bones are present, and represent the earliest indisputable domesticate from any Sámi habitation site. A peculiar feature is the repeated spatial pattern in bone refuse disposal, showing a systematic and almost identical clustering at the two sites. Combining analyses of bone assemblages, artefacts and archaeological features, the paper discusses changes in settlement pattern, reindeer economies, and the organization of domestic space. The analyses provide new perspectives on early domestication as well as on the remarkable changes that took place among the Sámi societies in northern Fennoscandinavia during the Viking Age and early Medieval Period.

Evaluating the Use of Tree Shelters for Direct Seeding of Castanea on a Surface Mine in Appalachia

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Christopher Barton

2015-10-01

Full Text Available American chestnut (Castanea dentata, once a primary constituent of the eastern hardwood forest ecosystem, was nearly extirpated from the forest canopy by the accidental introduction of chestnut blight (Cryphonectria parasitica. An intensive breeding program has sought to breed blight resistance from Chinese chestnut into American chestnuts, while maintaining as much of the desirable American chestnut phenotypes as possible. Previous studies suggest that these blight resistant American chestnuts, termed “restoration chestnuts”, are capable of thriving on reclaimed surface mines. We direct seeded pure Chinese, pure American, and three backcross lines into brown sandstone minesoil on a mine site in Pike County, KY. To investigate the effects of tree sheltering on survival and growth, we installed tree shelters on half the plots, and left the rest of the plots unsheltered. Results indicated that shelters were highly effective at reducing initial mortality. In addition, while pure Chinese chestnut survival was highest, the three backcross lines have also survived well on this site. Our study demonstrates that American, Chinese, and backcrossed chestnuts can survive through five growing seasons on reclaimed surface mines with the use of tree shelters.

Development and implementation of a watershed management plan forLlac la Biche, Alberta, Canada.

Science.gov (United States)

White, J; Logan, M; Rawles, M

2006-01-01

Lakeland County is experiencing increasing developmental pressures arising from the oil and gas boom at nearby Fort McMurray. There is increased industrial traffic passing through the county, and 600 new residential lots are proposed in 2005, almost double from 5 years ago. Deteriorating surface water quality has been a concern in the area due to an increase in development and agriculture, while excessive fish harvesting and winterkills have impacted commercial and recreational fisheries. Today, walleye and pike populations in the lake remain collapsed and restocking efforts have not been successful. Due to the lack of studies done on the watershed, the county is leading a multidisciplinary research study which includes a baseline water quality study, riparian health assessments, land use mapping and ground-truthing and projects with the local health authority. This research has been summarized in a comprehensive state of the watershed report, which will be used to complete a watershed management plan for the Lac la Biche watershed. Recommendations from the state of the watershed report and watershed management plan will also be incorporated into municipal planning documents and recommend changes to the Municipal Government Act itself.

Assignment strategies in homonuclear three-dimensional 1H NMR spectra of proteins

International Nuclear Information System (INIS)

Vuister, G.W.; Boelens, R.; Padilla, A.; Kleywegt, G.J.; Kaptein, R.

1990-01-01

The increase in dimensionality of three-dimensional (3D) NMR greatly enhances the spectral resolution in comparison to 2D NMR. It alleviates the problem of resonance overlap and may extend the range of molecules amenable to structure determination by high-resolution NMR spectroscopy. Here, the authors present strategies for the assignment of protein resonances from homonuclear nonselective 3D NOE-HOHAHA spectra. A notation for connectivities between protons, corresponding to cross peaks in 3D spectra, is introduced. They show how spin systems can be identified by tracing cross-peak patterns in cross sections perpendicular to the three frequency axes. The observable 3D sequential connectivities in proteins are tabulated, and estimates for the relative intensities of the corresponding cross peaks are given for α-helical and β-sheet conformations. Intensities of the cross peaks in the 3D spectrum of pike III paravalbumin follow the predictions. The sequential-assignment procedure is illustrated for loop regions, extended and α-helical conformations for the residues Ala 54-Leu 63 of paravalbumin. NOEs that were not previously identified in 2D spectra of paravalbumin due to overlap are found

Distinguishing between Rural and Urban Road Segment Traffic Safety Based on Zero-Inflated Negative Binomial Regression Models

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Xuedong Yan

2012-01-01

Full Text Available In this study, the traffic crash rate, total crash frequency, and injury and fatal crash frequency were taken into consideration for distinguishing between rural and urban road segment safety. The GIS-based crash data during four and half years in Pikes Peak Area, US were applied for the analyses. The comparative statistical results show that the crash rates in rural segments are consistently lower than urban segments. Further, the regression results based on Zero-Inflated Negative Binomial (ZINB regression models indicate that the urban areas have a higher crash risk in terms of both total crash frequency and injury and fatal crash frequency, compared to rural areas. Additionally, it is found that crash frequencies increase as traffic volume and segment length increase, though the higher traffic volume lower the likelihood of severe crash occurrence; compared to 2-lane roads, the 4-lane roads have lower crash frequencies but have a higher probability of severe crash occurrence; and better road facilities with higher free flow speed can benefit from high standard design feature thus resulting in a lower total crash frequency, but they cannot mitigate the severe crash risk.

Comparison Of Flat-Knitted Structures Made Of Poly(P-Phenylene-2,6-Benzobisoxazole) And Para-Aramid Referring To Their Stab Resistance

Science.gov (United States)

Obermann, M.; Aumann, S.; Heimlich, F.; Weber, M. O.; Schwarz-Pfeiffer, A.

2016-07-01

In the field of protective gear, developers always aim for lighter and more flexible material in order to increase the wearing comfort. Suppliers now work on knitted garments in the sports-sector as well as in workwear and protective gear for policemen or security-agents. In a recent project different knitted structures made of a poly(p-phenylene-2,6-benzobisoxazole) (PBO)-multifilament were compared to their counterparts made of para-aramid. In focus of the comparison stood the stab-resistance linked to either the mass per unit area or the stitch density. The tested fabrics were produced on hand flat knitting machines as well as on electronical flat knitting machines of the type Stoll CMS 330TC4, in order to analyse fabrics with different tightness factor and machine gauges. The stab resistance of the different knitted fabrics was examined according to the standard of the Association of Test Laboratories for Bullet, Stab or Pike Resistant Materials and Construction Standards. The presentation includes the depiction of the results of the test series and their interpretation. Furthermore it will give an outlook on most suitable combinations of materials and structures to be used in protective gear.

Study of inland fisheries from Danube Delta - Romania

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CERNISENCU Irina

2007-10-01

Full Text Available The average commercial fish catch decreased from about 12000 tons (1967 year, in Danube Delta lakes to around 3000 tons in the last years. In this period piscivorous species like pike, wels catfish, european perch declined and the non-piscivorous species like gibel carp, bream, roach and white bream became dominant. According with the last years state of the fish stocks its estimated that in Danube Delta lakes a sustainable yield of about 6000 tons could be fished. The administration of the stocks on the durable principles and implementation of the correct strategy it decisively depends on the quality data concerning the catch size. The lack or unreliable records led to the underestimation or overestimation of some parameters with negative results about the current state and theexploitation of the stocks. The essential error source in stock estimation of lake Complexes is represented by the unrecorded catches of the legal family subsistence quota, black markets and poaching. The real data is very important for accurate assessment of the fish stock. Improvement of the quality of the catch statistics and monitoring of fishing effort are required for sustainable management of Danube delta fisheries.

Air Traffic Management Research at NASA

Science.gov (United States)

Farley, Todd

2012-01-01

The U.S. air transportation system is the most productive in the world, moving far more people and goods than any other. It is also the safest system in the world, thanks in part to its venerable air traffic control system. But as demand for air travel continues to grow, the air traffic control systems aging infrastructure and labor-intensive procedures are impinging on its ability to keep pace with demand. And that impinges on the growth of our economy. Part of NASA's current mission in aeronautics research is to invent new technologies and procedures for ATC that will enable our national airspace system to accommodate the increasing demand for air transportation well into the next generation while still maintaining its excellent record for safety. It is a challenging mission, as efforts to modernize have, for decades, been hamstrung by the inability to assure safety to the satisfaction of system operators, system regulators, and/or the traveling public. In this talk, we'll provide a brief history of air traffic control, focusing on the tension between efficiency and safety assurance, and we'll highlight some new NASA technologies coming down the pike.

Effect of occupation-based groups on self-concept of children aged 5-8: a pilot study.

Science.gov (United States)

Scurlock, Debra

2015-01-01

The goal of this pilot study was to ascertain the effectiveness of an occupation-based after-school program for improving self-concept in children, ages five through eight. Fifty-four randomly selected children ages five through eight from two schools (one being the control group) with similar socioeconomic status along the Ohio River were involved in this research study. The Pictorial Scale of Perceived Competence and Social Acceptance for Young Children (PCSA; Harter & Pike, 1984) was administered to all participants (N = 54), four subtests were analyzed: cognitive competence, social competence with peers, physical competence in sports, and maternal acceptance. The experimental group (n = 25) attended occupation-based groups two times a week after school. The control group (n = 29) did not participate in an after-school program. Data from pre-test and post-test were analyzed using a t-test. Findings demonstrated that the experimental group improved their self-concept scores when compared to the control group in the areas of peer acceptance and cognitive competence. This would offer tentative evidence that an after-school program directed by occupational therapists that is designed to improve self-concept may be successful.

Subsurface geology of the upper Devonian-lower Mississippian black-shale sequence in eastern Kentucky

International Nuclear Information System (INIS)

Dillman, S.B.

1980-01-01

The Upper Devonian-Lower Mississippi black-shale sequence is an important source of natural gas in eastern Kentucky and with technological advances may be an important source of synthetic oil and uranium on the flanks of the Cincinnati arch. To enhance the understanding and development of these resources in the black-shale sequence, eight isopach maps, eight structure-contour maps and nine isopach maps of highly radioactive black shale were constructed. Structural features including the Rome trough, Rockcastle River uplift, Pine Mountain thrust fault, Kentucky River and Paint Creek fault zones and unnamed basinal areas in Greenup, Pike, and Knott counties were identified on the maps. Faults bounding the Rome trough and other structures were active intermittently throughout Late Devonian time. Other structures show only post-Devonian activity, whereas some show both Devonian and post-Devonian activity. Comparison of structure-contour and isopach maps allow the differentiation of syn- and post-sedimentray structural activity relative to the black-shale sequence. A north-south trending hinge line separates a broad platform area from an area of rapid eastward thickening into the Appalachian basin. Units 7 through 1 progressively onlap the Cincinnati arch; units 4 through 1 cover the arch

Limnological and fisheries investigation of the flooded open pit at the Gunnar uranium mine

International Nuclear Information System (INIS)

Tones, P.I.

1982-02-01

The Gunnar uranium mine on the north shore of Lake Athabaska was closed in 1964 and became flooded. This study describes the physical, chemical and biological characteristics of the water-filled open pit mine. Depth profiles of temperature, dissolved oxygen and specific conductivity indicated the presence of five strata in the 110 m-deep lake during the summer. Radionuclides and dissolved salts were concentrated in the deepest layer, where there was almost no dissolved oxygen and living organisms. The concentrations of heavy metals except uranium are generally very low at all depths. Surface levels of radium 226, thorium, uranium and lead 210 are low. There is no surface seepage out of the pit. Bacteria and phytoplankton populations are typical of those found in warm nutrient-rich waters; the total number of species is low, but there is a large number of individuals. No benthic species are present at the bottom or at 82.5 m. Northern pike, common suckers, and longnose suckers were caught; all appeared to be in good condition and larger than individuals of the same age in the neighbouring lakes. Radionuclide levels in their flesh were one to two orders of magnitude greater than background

Los aureus y denarius emitidos por Lucio Vero entre los años 160 al 169: propaganda, Historia y documentación

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José Antonio GARZÓN BLANCO

2010-02-01

Full Text Available RESUMEN: Lucio Vero, hijo de Elio, un oscuro y tempranamente fallecido primer sucesor de Adriano, parece destinado, desde un primer momento, a ocupar un papel secundario en el gobierno conjunto con Marco Aurelio. La Historia Augusta lo presenta como un personaje despreocupado, con una vida relajada y placentera, frente a la severidad y austeridad de Marco Aurelio; actualmente, parece que los hechos no se ajustan a esta descripción como han demostrado P. Lambrechts y otros autores modernos. Sus acuñaciones numismáticas, más cortas que las de su colega en el Imperio al haber muerto prematuramente, presentan en general los patrones de las emisiones de Marco Aurelio, y también ciertas originalidades entre las que destacarían algunos rasgos de la personalidad y de las actuaciones de Lucio Vero, por lo cual merece la pena su estudio, aunque solo sea por aclarar aspectos poco nítidos de la política general de finales del siglo II.ABSTRACT: This word es trying to investigate in important aspects the imperial roman propaganda through numismatics. The second century D.C. has been called with every right «The Golden Age of the Antoninos»; indeed, during this century a unique class emerges in Universal History: That of Philosopher emperors or friends of the philosophers, their activities during their mandates were always governed by the principle of philosophical humanism. Apart from the classical sources, this study of coins is the best source which fells us about these concepts; all taken from the II century A.D. from governement of Lucius Verus.

Detection of Viral Hemorrhagic Septicemia Virus by Quantitative Reverse Transcription Polymerase Chain Reaction from Two Fish Species at Two Sites in Lake Superior

Science.gov (United States)

Cornwell, Emily R.; Eckerlin, Geofrey E.; Getchell, Rodman G.; Groocock, Geoffrey H.; Thompson, Tarin M.; Batts, William N.; Casey, Rufina N.; Kurath, Gael; Winton, James R.; Bowser, Paul R.; Bain, Mark B.; Casey, James W.

2011-01-01

Viral hemorrhagic septicemia virus (VHSV) was first detected in the Laurentian Great Lakes in 2005 during a mortality event in the Bay of Quinte, Lake Ontario. Subsequent analysis of archived samples determined that the first known isolation of VHSV in the Laurentian Great Lakes was from a muskellunge Esox masquinongy collected in Lake St. Clair in 2003. By the end of 2008, mortality events and viral isolations had occurred in all of the Laurentian Great Lakes except Lake Superior. In 2009, a focused disease surveillance program was designed to determine whether VHSV was also present in Lake Superior. In this survey, 874 fish from 7 sites along the U.S. shoreline of Lake Superior were collected during June 2009. Collections were focused on nearshore species known to be susceptible to VHSV. All fish were dissected individually by using aseptic techniques and were tested for the presence of VHSV genetic material by use of a quantitative reverse transcription (qRT) polymerase chain reaction (PCR) targeting the viral nucleoprotein gene. Seventeen fish from two host species at two different sites tested positive at low levels for VHSV. All attempts to isolate virus in cell culture were unsuccessful. However, the presence of viral RNA was confirmed independently in five fish by using a nested PCR that targeted the glycoprotein (G) gene. Partial G gene sequences obtained from three fish were identical to the corresponding sequence from the original 2003 VHSV isolate (MI03) from muskellunge. These detections represent the earliest evidence for the presence of VHSV in Lake Superior and illustrate the utility of the highly sensitive qRT-PCR assay for disease surveillance in aquatic animals.

CROATIAN FRESHWATER FISHERIES IN 1994

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Mirko Turk

1995-09-01

Full Text Available Data on the production and catch of fish according to species, on the surface of the fish ponds, on the means of fish catching and on the distribution of the product and catch in 1994 is presented. The surface area used for production of fish has decreased by 274 ha or 2,51%. The total amount of fish has decreased by 1.263 tons or 14,78%. The highest production of fish was reached by the fish farm Donji Miholjac with 1.231 kg/ha. The feeding coefficient is 3,10 kg. Only on one fish farm was the feeding coefficient less than 2.0 kg (1,40 and on two large farms this coefficient was greater than 5,00 kg. The main fish food is still wheat followed by corn. The amount of fertilizer used was decreased by 14,40%. The fry carp growing ponds make up 0,92% of the surface area of the entire fish farm, the young carp ponds 21,77% and the culturing ponds for consumption fish 76,55%. The total amount of fish in the carp ponds was 660 kg/ha, and in the trout ponds it was 123.4 tons/ha. The carp is the highest produced fish with 80, 35%, then the herbivorous fish with 5,65 and all other fish make up 14% of the total production. In the structure of herbivorous fish the grass carp is leading with 54, 70%, followed by the big head carp with 25,54% and the silver carp with 19,76%. In comparison with the previous year the production of "all other fish- has significantly increased (287%, and sheat fish 18,90%, while the production of trench has decreased (71%. Fish catch in open waters has increased by 20,57% in comparison to the previous year. Carp made up 78,07% of the total production and catch of freshwater fish, the herbivorous fish made up 5,40%, trout 4,38%, the sheat fish, pike perch and pike 2,86% and all other fish species 9,28%. As far as the distribution of production and catch, 51,60% were sold on the market, 37,54% were used for reproduction (stocking the fish farms , mortalities were 6,35% and for personal use (sports fishing 4,50% was used. The number

Reservoir characterization and final pre-test analysis in support of the compressed-air-energy-storage Pittsfield aquifer field test in Pike County, Illinois

Energy Technology Data Exchange (ETDEWEB)

Wiles, L.E.; McCann, R.A.

1983-06-01

The work reported is part of a field experimental program to demonstrate and evaluate compressed air energy storage in a porous media aquifer reservoir near Pittsfield, Illinois. The reservoir is described. Numerical modeling of the reservoir was performed concurrently with site development. The numerical models were applied to predict the thermohydraulic performance of the porous media reservoir. This reservoir characterization and pre-test analysis made use of evaluation of bubble development, water coning, thermal development, and near-wellbore desaturation. The work was undertaken to define the time required to develop an air storage bubble of adequate size, to assess the specification of instrumentation and above-ground equipment, and to develop and evaluate operational strategies for air cycling. A parametric analysis was performed for the field test reservoir. (LEW)

Deepwater Chondrichthyan Bycatch of the Eastern King Prawn Fishery in the Southern Great Barrier Reef, Australia.

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Cassandra L Rigby

Full Text Available The deepwater chondrichthyan fauna of the Great Barrier Reef is poorly known and life history information is required to enable their effective management as they are inherently vulnerable to exploitation. The chondrichthyan bycatch from the deepwater eastern king prawn fishery at the Swain Reefs in the southern Great Barrier Reef was examined to determine the species present and provide information on their life histories. In all, 1533 individuals were collected from 11 deepwater chondrichthyan species, with the Argus skate Dipturus polyommata, piked spurdog Squalus megalops and pale spotted catshark Asymbolus pallidus the most commonly caught. All but one species is endemic to Australia with five species restricted to waters offshore from Queensland. The extent of life history information available for each species varied but the life history traits across all species were characteristic of deep water chondrichthyans with relatively large length at maturity, small litters and low ovarian fecundity; all indicative of low biological productivity. However, variability among these traits and spatial and bathymetric distributions of the species suggests differing degrees of resilience to fishing pressure. To ensure the sustainability of these bycatch species, monitoring of their catches in the deepwater eastern king prawn fishery is recommended.

Student Summary of the U.S. Department of Energy Portsmouth Annual Site Environmental Report (ASER) for 2013

Energy Technology Data Exchange (ETDEWEB)

Bryant, Shea [Waverly High School (WHS), Waverly, OH (United States); Develin, Thomas [Waverly High School (WHS), Waverly, OH (United States); Flores, Victor [Waverly High School (WHS), Waverly, OH (United States); Gilbert, Tyler [Waverly High School (WHS), Waverly, OH (United States); Heigley, Madison [Waverly High School (WHS), Waverly, OH (United States); Johnson, Hayden [Waverly High School (WHS), Waverly, OH (United States); Jones, Larry [Waverly High School (WHS), Waverly, OH (United States); Keechle, Autumn [Waverly High School (WHS), Waverly, OH (United States); Kelley, Abe [Waverly High School (WHS), Waverly, OH (United States); Kritzwiser, Branson [Waverly High School (WHS), Waverly, OH (United States); Lawless, Paige [Waverly High School (WHS), Waverly, OH (United States); Montgomery, Nikki [Waverly High School (WHS), Waverly, OH (United States); Newland, Dawndra [Waverly High School (WHS), Waverly, OH (United States); Noble, Jeff [Waverly High School (WHS), Waverly, OH (United States); Parsons, Abigail [Waverly High School (WHS), Waverly, OH (United States); Riffe, Courtney [Waverly High School (WHS), Waverly, OH (United States); Trego, Andrew [Waverly High School (WHS), Waverly, OH (United States); Wicker, Drake [Waverly High School (WHS), Waverly, OH (United States)

2016-10-07

The U.S. Department of Energy (DOE) conducts environmental monitoring at the Portsmouth Gaseous Diffusion Plant Site (PORTS) on an ongoing basis. Each year, the information collected is presented in a data volume and a comprehensive publication entitled the Annual Site Environmental Report (ASER). This year, a class at Waverly High School (WHS), located in Pike County, Ohio, developed this summary report. Both the ASER and this summary report are important as they allow DOE to clearly and concisely explain our environmental monitoring programs to our many stakeholders. The information presented in this summary shows that the PORTS site near Piketon, Ohio, is safe due in part to the Department’s focus on safety. The work at DOE facilities is highly detailed and technically complex, but DOE is committed to performing each of these activities safely. DOE’s first priority is to protect the well-being of our workers, the surrounding communities, and the environment. DOE would like to offer its sincerest appreciation to the students and faculty leader at Waverly High School who worked on this summary document. DOE congratulates each of you for your effort, enthusiasm, and willingness to support this project. DOE hopes you enjoy reading the PORTS 2013 Annual Site Environmental Report Summary.