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Sample records for aethina tumida murray

  1. Boron and Coumaphos Residues in Hive Materials Following Treatments for the Control of Aethina tumida Murray.

    PubMed

    Valdovinos-Flores, Cesar; Gaspar-Ramírez, Octavio; Heras-Ramírez, María Elena; Lara-Álvarez, Carlos; Dorantes-Ugalde, José Antonio; Saldaña-Loza, Luz María

    2016-01-01

    In the search of alternatives for controlling Aethina tumida Murray, we recently proposed the BAA trap which uses boric acid and an attractant which mimics the process of fermentation caused by Kodamaea ohmeri in the hive. This yeast is excreted in the feces of A. tumida causing the fermentation of pollen and honey of infested hives and releasing compounds that function as aggregation pheromones to A. tumida. Since the boron is the toxic element in boric acid, the aim of this article is to assess the amount of boron residues in honey and beeswax from hives treated with the BAA trap. For this aim, the amount of bioaccumulated boron in products of untreated hives was first determined and then compared with the amount of boron of products from hives treated with the BAA trap in two distinct climatic and soil conditions. The study was conducted in the cities of Padilla, Tamaulipas, and Valladolid, Yucatan (Mexico) from August 2014 to March 2015. The quantity of boron in honey was significantly less in Yucatan than in Tamaulipas; this agrees with the boron deficiency among Luvisol and Leptosol soils found in Yucatan compared to the Vertisol soil found in Tamaulipas. In fact, the honey from Yucatan has lower boron levels than those reported in the literature. The BAA treatment was applied for four months, results show that the BAA trap does not have any residual effect in either honey or wax; i.e., there is no significant difference in boron content before and after treatment. On the other hand, the organophosphate pesticide coumaphos was found in 100% of wax samples and in 64% of honey samples collected from Yucatan. The concentration of coumaphos in honey ranges from 0.005 to 0.040 mg/kg, which are below Maximum Residue Limit (MRL) allowed in the European Union (0.1 mg/kg) but 7.14% of samples exceeded the MRL allowed in Canada (0.02 mg/kg).

  2. Boron and Coumaphos Residues in Hive Materials Following Treatments for the Control of Aethina tumida Murray

    PubMed Central

    Valdovinos-Flores, Cesar; Gaspar-Ramírez, Octavio; Heras–Ramírez, María Elena; Dorantes-Ugalde, José Antonio; Saldaña-Loza, Luz María

    2016-01-01

    In the search of alternatives for controlling Aethina tumida Murray, we recently proposed the BAA trap which uses boric acid and an attractant which mimics the process of fermentation caused by Kodamaea ohmeri in the hive. This yeast is excreted in the feces of A. tumida causing the fermentation of pollen and honey of infested hives and releasing compounds that function as aggregation pheromones to A. tumida. Since the boron is the toxic element in boric acid, the aim of this article is to assess the amount of boron residues in honey and beeswax from hives treated with the BAA trap. For this aim, the amount of bioaccumulated boron in products of untreated hives was first determined and then compared with the amount of boron of products from hives treated with the BAA trap in two distinct climatic and soil conditions. The study was conducted in the cities of Padilla, Tamaulipas, and Valladolid, Yucatan (Mexico) from August 2014 to March 2015. The quantity of boron in honey was significantly less in Yucatan than in Tamaulipas; this agrees with the boron deficiency among Luvisol and Leptosol soils found in Yucatan compared to the Vertisol soil found in Tamaulipas. In fact, the honey from Yucatan has lower boron levels than those reported in the literature. The BAA treatment was applied for four months, results show that the BAA trap does not have any residual effect in either honey or wax; i.e., there is no significant difference in boron content before and after treatment. On the other hand, the organophosphate pesticide coumaphos was found in 100% of wax samples and in 64% of honey samples collected from Yucatan. The concentration of coumaphos in honey ranges from 0.005 to 0.040 mg/kg, which are below Maximum Residue Limit (MRL) allowed in the European Union (0.1 mg/kg) but 7.14% of samples exceeded the MRL allowed in Canada (0.02 mg/kg). PMID:27092938

  3. Boron and Coumaphos Residues in Hive Materials Following Treatments for the Control of Aethina tumida Murray.

    PubMed

    Valdovinos-Flores, Cesar; Gaspar-Ramírez, Octavio; Heras-Ramírez, María Elena; Lara-Álvarez, Carlos; Dorantes-Ugalde, José Antonio; Saldaña-Loza, Luz María

    2016-01-01

    In the search of alternatives for controlling Aethina tumida Murray, we recently proposed the BAA trap which uses boric acid and an attractant which mimics the process of fermentation caused by Kodamaea ohmeri in the hive. This yeast is excreted in the feces of A. tumida causing the fermentation of pollen and honey of infested hives and releasing compounds that function as aggregation pheromones to A. tumida. Since the boron is the toxic element in boric acid, the aim of this article is to assess the amount of boron residues in honey and beeswax from hives treated with the BAA trap. For this aim, the amount of bioaccumulated boron in products of untreated hives was first determined and then compared with the amount of boron of products from hives treated with the BAA trap in two distinct climatic and soil conditions. The study was conducted in the cities of Padilla, Tamaulipas, and Valladolid, Yucatan (Mexico) from August 2014 to March 2015. The quantity of boron in honey was significantly less in Yucatan than in Tamaulipas; this agrees with the boron deficiency among Luvisol and Leptosol soils found in Yucatan compared to the Vertisol soil found in Tamaulipas. In fact, the honey from Yucatan has lower boron levels than those reported in the literature. The BAA treatment was applied for four months, results show that the BAA trap does not have any residual effect in either honey or wax; i.e., there is no significant difference in boron content before and after treatment. On the other hand, the organophosphate pesticide coumaphos was found in 100% of wax samples and in 64% of honey samples collected from Yucatan. The concentration of coumaphos in honey ranges from 0.005 to 0.040 mg/kg, which are below Maximum Residue Limit (MRL) allowed in the European Union (0.1 mg/kg) but 7.14% of samples exceeded the MRL allowed in Canada (0.02 mg/kg). PMID:27092938

  4. Radiobiology of Aethina tumida and prospects for management using sterile insect releases

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Small hive beetle (SHB), Aethina tumida Murray (Coleoptera: Nitidulidae) is considered a serious threat to beekeeping in the Western Hemisphere, Australia, and Europe mainly due to larval feeding on honey, pollen, and brood of the European honeybee, Apis mellifera. Control methods are limited for th...

  5. Trapping of Aethina tumida Murray (Coleoptera: Nitidulidae) from Apis mellifera L. (Hymenoptera: Apidae) colonies with an in-hive baited trap.

    PubMed

    Torto, Baldwyn; Arbogast, Richard T; Van Engelsdorp, Dennis; Willms, Steven; Purcell, Dusti; Boucias, Drion; Tumlinson, James H; Teal, Peter E A

    2007-10-01

    The effectiveness of two lures for trapping the small hive beetle, Aethina tumida, by means of in-hive traps was tested by field trials in apiaries located in Florida, Delaware, and Pennsylvania during 2003-2005. Both lures included a mixture (pollen dough) consisting of bee pollen and commercial pollen substitute formulated with or without glycerol and honey. Before it was used in the traps, the dough was conditioned either by the feeding of adult small hive beetles or by inoculation with the yeast Kodamaea ohmeri (NRRL Y-30722). Traps baited with conditioned dough captured significantly more beetles than unbaited traps, and traps positioned under the bottom board of a hive captured significantly more beetles than traps located at the top of a hive. In fact, baited in-hive bottom board traps nearly eliminated the beetles from colonies at a pollination site in Florida. However, when these honey bee colonies were moved to an apiary, trap catch increased markedly over time, indicating a resurgence of the beetle population produced by immigration of beetles from nearby hives or emerging from the soil. In tests at three Florida apiaries during 2006, yeast-inoculated dough baited bottom board traps captured significantly more beetles than unbaited traps, showing the effectiveness of yeast-inoculated dough as a lure and its potential as a tool in managing the small hive beetle.

  6. Aethina tumida (Coleoptera: Nitidulidae) and Oplostomus haroldi (Coleoptera: Scarabaeidae): Occurrence in Kenya, Distribution within Honey Bee Colonies, and Response to Host Odors

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Aethina tumida Murray is considered a minor parasitic pest of African honey bee colonies, but little information is available on other coleopteran pests. We surveyed for A. tumida and other beetles in honey bee colonies at four major beekeeping locations: Watamu, Chawia-Taita, Matuu, and Nairobi in...

  7. Development of a pheromone-based trapping system for the small hive beetle, Aethina tumida (Coleoptera: Nitidulidae)

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The small hive beetle, Aethina tumida Murray is a European honey bee (Apis mellifera L, Hymenoptera: Apidae) pest that can be destructive to honey bee colonies, causing damage to comb, stored honey and pollen (Hepburn and Radloff 1998). Although not a direct cause of Colony Collapse Disorder (CCD)...

  8. Longevity and reproductive success of Aethina tumida (Coleoptera: Nitidulidae) fed different natural diets.

    PubMed

    Ellis, James D; Neumann, Peter; Hepburn, Randall; Elzen, Patti J

    2002-10-01

    The longevity and reproductive success of newly emerged, unfed adult Aethina tumida Murray assigned different diets (control = unfed; honey-pollen; honey; pollen; empty brood comb; bee brood; fresh Kei apples; and rotten Kei apples) were determined. Longevity in honey-fed small hive beetle adults (average maximum: 167 d) was significantly higher than on other diets. Small hive beetles fed empty brood comb lived significantly longer (average maximum: 49.8 d) than unfed beetles (average maximum: 9.6 d). Small hive beetle offspring were produced on honey-pollen, pollen, bee brood, fresh Kei apples, and rotten Kei apples but not on honey alone, empty brood comb, or in control treatments. The highest reproductive success occurred in pollen fed adults (1773.8 +/- 294.4 larvae per three mating pairs of adults). The data also show that A. tumida can reproduce on fruits alone, indicating that they are facultative parasites. The pupation success and sex ratio of small hive beetle offspring were also analyzed. Larvae fed pollen, honey-pollen, or brood had significantly higher pupation success rates of 0.64, 0.73, and 0.65 respectively than on the other diets. Sex ratios of emerging adults fed diets of pollen or brood as larvae were significantly skewed toward females. Because small hive beetle longevity and overall reproductive success was highest on foodstuffs located in honey bee colonies, A. tumida are efficient at causing large-scale damage to colonies of honey bees resulting in economic injury for the beekeeper. Practical considerations for the control of A. tumida are briefly discussed.

  9. Effect of height and color on the efficiency of pole traps for Aethina tumida (Coleoptera: Nitidulidae).

    PubMed

    De Guzman, Lilia I; Frake, Amanda M; Rinderer, Thomas E; Arbogast, Richard T

    2011-02-01

    Olfactory cues released by adult bees, brood, pollen, and honey from a honey bee, Apis mellifera L., colony are the primary stimuli that guide the beetle Aethina tumida Murray (Coleoptera: Nitidulidae) to host colonies. To investigate the response of adult A. tumida to visual stimuli, we tested the influence of color and height on trap efficiency. Two pole trap colors (black and white) were evaluated at three heights (46 cm, 1 m, and 3m) from October 2008 to December 2009. A. tumida were trapped in the greatest numbers between 17 April and 15 May 2009. The lowest numbers were captured during the winter and fall. The trapping results showed that both color and trap height significantly influenced capture. The average catch in the white traps (mean +/- SE, 2.47 +/- 0.30) was significantly higher than that of the black traps (1.53 +/- 0.29) probably because white is more reflective than black. Among the heights evaluated, there were more beetles caught when traps were positioned at 46 cm (the same height as the entrance of the hives) with 3.07 +/- 0.51 beetles compared with beetles captured at 1 m (1.88 +/- 0.30) or 3 m (1.06 +/- 0.18) high. Male and female beetles exhibited similar responses to trap color and height. The relationship between the numbers of beetles in colonies and capture rates in traps was very poor and did not provide a basis to evaluate trap efficiency. In addition, because capture rates seemed generally low in relationship to the number of beetles in the apiary, substantial improvements to the trap may be necessary.

  10. Concurrent infestations by Aethina tumida and Varroa destructor alters thermoregulation in Apis mellifera winter clusters

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The small hive beetle, Aethina tumida, and the ectoparasitic mite, Varroa destructor, are parasites of the honeybee, Apis mellifera. Both parasites overwinter in honeybee colonies. The efficacy of thermoregulation might be reduced in beetle and mite infested clusters, due to altered activity of host...

  11. Age and aggregation trigger mating behavior in the small hive beetle, Aethina tumida

    Technology Transfer Automated Retrieval System (TEKTRAN)

    This study aimed to investigate the previously poorly documented reproductive behaviour of the small hive beetle, Aethina tumida (Nitidulidae), a honey bee (Apis mellifera) parasite. We observed and described the mating behavior in detail, and tested the hypothesis that beetle aggregation plays a vi...

  12. Estimating reproductive success of Aethina tumida (Coleoptera: Nitidulidae) in honey bee colonies by trapping emigrating larvae.

    PubMed

    Arbogast, Richard T; Torto, Baldwyn; Willms, Steve; Fombong, Ayuka T; Duehl, Adrian; Teal, Peter E A

    2012-02-01

    The small hive beetle (Aethina tumida Murray) is a scavenger and facultative predator in honey bee colonies, where it feeds on pollen, honey, and bee brood. Although a minor problem in its native Africa, it is an invasive pest of honey bees in the United States and Australia. Adult beetles enter bee hives to oviposit and feed. Larval development occurs within the hive, but mature larvae leave the hive to pupate in soil. The numbers leaving, which can be estimated by trapping, measure the reproductive success of adult beetles in the hive over any given period of time. We describe a trap designed to intercept mature larvae as they reach the end of the bottom board on their way to the ground. Trap efficiency was estimated by releasing groups of 100 larvae into empty brood boxes and counting the numbers trapped. Some larvae escaped, but mean efficiency ranged from 87.2 to 94.2%. We envision the trap as a research tool for study of beetle population dynamics, and we used it to track numbers of larvae leaving active hives for pupation in the soil. The traps detected large increases and then decreases in numbers of larvae leaving colonies that weakened and died. They also detected small numbers of larvae leaving strong European and African colonies, even when no larvae were observed in the hives.

  13. Factors affecting pupation success of the small hive beetle, Aethina tumida.

    PubMed

    Meikle, W G; Diaz, R

    2012-01-01

    Survivorship of larvae of the small hive beetle, Aethina tumida Murray (Coleoptera: Nitidulidae), was measured after they were raised on one of six diets. The effects of container shape (wide and shallow vs. narrow and deep), soil depth (0, 0.5, 1.0, 2.0, 4.0, and 8.0 cm), and temperature (28°, 32°, or 35° C) on pupation success was measured. Diet influenced larval survivorship, but did not have a strong effect on larval weight. The larvae fed only bee brood survived the shortest period of time. The larvae that were denied pupation substrate, fed only honey and pollen, and no other food or water after 20 days, had a median survivorship of 47.6 days, with a maximum of 61 days, while those fed only brood had a median survivorship of 18.2 days. Pupation substrate was essential for successful pupation, and the depth of the substrate, not its top surface area, was the crucial factor. Pupation success in narrow and deep containers was 95.6% on average, but only 12.5% in wide and shallow containers, using the same soil volume. In narrow and deep containers, most or all larvae kept in 4-8 cm of soil pupated at all temperatures, few larvae kept at 2 cm soil depth pupated, one out of 240 kept at 1.0 cm pupated, and no larvae kept at soil depths of 0 or 0.5 cm pupated.

  14. Factors Affecting Pupation Success of the Small Hive Beetle, Aethina tumida

    PubMed Central

    Meikle, W.G.; Diaz, R.

    2012-01-01

    Survivorship of larvae of the small hive beetle, Aethina tumida Murray (Coleoptera: Nitidulidae), was measured after they were raised on one of six diets. The effects of container shape (wide and shallow vs. narrow and deep), soil depth (0, 0.5, 1.0, 2.0, 4.0, and 8.0 cm), and temperature (28°, 32°, or 35° C) on pupation success was measured. Diet influenced larval survivorship, but did not have a strong effect on larval weight. The larvae fed only bee brood survived the shortest period of time. The larvae that were denied pupation substrate, fed only honey and pollen, and no other food or water after 20 days, had a median survivorship of 47.6 days, with a maximum of 61 days, while those fed only brood had a median survivorship of 18.2 days. Pupation substrate was essential for successful pupation, and the depth of the substrate, not its top surface area, was the crucial factor. Pupation success in narrow and deep containers was 95.6% on average, but only 12.5% in wide and shallow containers, using the same soil volume. In narrow and deep containers, most or all larvae kept in 4–8 cm of soil pupated at all temperatures, few larvae kept at 2 cm soil depth pupated, one out of 240 kept at 1.0 cm pupated, and no larvae kept at soil depths of 0 or 0.5 cm pupated. PMID:23451773

  15. Pupal development of Aethina tumida (Coleoptera: Nitidulidae) in thermo-hygrometric soil conditions encountered in temperate climates.

    PubMed

    Bernier, M; Fournier, V; Giovenazzo, P

    2014-04-01

    The pupal development of Aethina tumida Murray (Coleoptera: Nitidulidae) was studied at various combinations of thermo-hygrometric soil conditions (temperatures of 16, 18, and 20 degrees C and soil water content levels of 0.37, 0.56, and 0.73 m3 water per cubic meter of dry soil) representative of southeastern Canada. Survivorship and development duration of A. tumida pupae, as well as sex ratio and life span of emerging adults, were assessed. Assays were conducted in growth chambers on an average of 50 third-instar larvae per thermo-hygrometric combination. Results show that survivorship of pupae decreased with lower temperature and higher soil water content. Pupal development time shortened as temperature increased (69-78 d at 16 degrees C, 47-54 d at 18 degrees C, and 36-39 d at 20 degrees C), but was longer in dryer soil. Optimal soil water content for pupal development was 0.56 m3 water per cubic meter of soil. We estimated that the minimum development temperature for pupae is between 10.2 and 13.2 degrees C, depending on soil water content. The sex ratio of emerging adults was influenced by soil water content. We measured one female to one male for dry and intermediately wet soils and three females to one male for wet soils. Higher soil water content reduced the life span of emerging adults by half. This study contributes to a better understanding of A. tumida population dynamics in eastern Canada.

  16. Response of the small hive beetle (Aethina tumida) to a blend of chemicals identified from honeybee (Apis mellifera) volatiles

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Coupled gas chromatographic-electroantennographic detection (GC-EAD) analyses of Super Q collected worker honey bee volatiles revealed several components that elicited antennal responses by the small hive beetle Aethina tumida. However, GC-MS analysis showed that eight of these EAD-active components...

  17. Transcriptomic and functional resources for the Small Hive Beetle Aethina tumida, a worldwide parasite of honey bees

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The small hive beetle (SHB), Aethina tumida, is a major pest of managed honey bee (Apis mellifera) colonies in the United States and Australia, and an emergent threat in Europe. While strong honey bee colonies generally keep SHB populations in check, weak or stressed colonies can succumb to infestat...

  18. Monitoring Aethina tumida (Coleoptera: Nitidulidae) with baited bottom board traps: occurrence and seasonal abundance in honey bee colonies in Kenya.

    PubMed

    Torto, Baldwyn; Fombong, Ayuka T; Arbogast, Richard T; Teal, Peter E A

    2010-12-01

    The population dynamics of the honey bee pest Aethina tumida Murray (small hive beetle) have been studied in the United States with flight and Langstroth hive bottom board traps baited with pollen dough inoculated with a yeast Kodamaea ohmeri associated with the beetle. However, little is known about the population dynamics of the beetle in its native host range. Similarly baited Langstroth hive bottom board traps were used to monitor the occurrence and seasonal abundance of the beetle in honey bee colonies at two beekeeping locations in Kenya. Trap captures indicated that the beetle was present in honey bee colonies in low numbers all year round, but it was most abundant during the rainy season, with over 80% trapped during this period. The survival of larvae was tested in field releases under dry and wet soil conditions, and predators of larvae were identified. The actvity and survival of the beetle were strongly influenced by a combination of abiotic and biotic factors. Larval survival was higher during wet (28%) than dry (1.1%) conditions, with pupation occurring mostly at 0-15 cm and 11-20 cm, respectively, beneath the surface soil during these periods. The ant Pheidole megacephala was identified as a key predator of larvae at this site, and more active during the dry than wet seasons. These observations imply that intensive trapping during the rainy season could reduce the population of beetles infesting hives in subsequent seasons especially in places where the beetle is a serious pest.

  19. Age and aggregation trigger mating behaviour in the small hive beetle, Aethina tumida (Nitidulidae)

    NASA Astrophysics Data System (ADS)

    Mustafa, Sandra G.; Spooner-Hart, Robert; Duncan, Michael; Pettis, Jeffery S.; Steidle, Johannes L. M.; Rosenkranz, Peter

    2015-10-01

    This study aimed to investigate the poorly documented reproductive behaviour of the small hive beetle, Aethina tumida (Nitidulidae), a honey bee ( Apis mellifera) parasite. We described the mating behaviour in detail and tested the hypothesis that beetle aggregation plays a vital role in mating in this species. Gender preference was examined in the context of age-dependency and possible chemical communication. Beetles started mating at a high frequency 18 days after emergence from the soil but only if they were aggregated ( p < 0.001); mating was infrequent when beetles were paired. Males in aggregation also tried to copulate with males and only copulated more frequently with females at 18 days after emergence from soil ( p < 0.001) in contrast to newly emerged, 7-day-old and 60-day-old beetles. Males and females spent more time in social contact with the opposite sex ( p < 0.01) when they were 18 days old in contrast to 7-day-old beetles. Filter papers which had been in contact with 21-day-old beetles were highly attractive to similar-aged beetles of the opposite sex ( p < 0.01). This suggests that chemical substances produced by the beetles themselves play a role in mating. Mating behaviour was characterised by a short pre-copulation courtship and female aggression towards other females and copulating couples. Both behaviours may be indicative of cryptic female choice. Delayed onset of reproductive behaviour is typical of many polygamous species, whilst the indispensability of aggregation for onset of sexual behaviour seems to be a feature unique to A. tumida. Both strategies support mass reproduction in this parasitic species, enabling A. tumida to overcome its honey bee host colony, and are probably triggered by chemotactic cues.

  20. Age and aggregation trigger mating behaviour in the small hive beetle, Aethina tumida (Nitidulidae).

    PubMed

    Mustafa, Sandra G; Spooner-Hart, Robert; Duncan, Michael; Pettis, Jeffery S; Steidle, Johannes L M; Rosenkranz, Peter

    2015-10-01

    This study aimed to investigate the poorly documented reproductive behaviour of the small hive beetle, Aethina tumida (Nitidulidae), a honey bee (Apis mellifera) parasite. We described the mating behaviour in detail and tested the hypothesis that beetle aggregation plays a vital role in mating in this species. Gender preference was examined in the context of age-dependency and possible chemical communication. Beetles started mating at a high frequency 18 days after emergence from the soil but only if they were aggregated (p < 0.001); mating was infrequent when beetles were paired. Males in aggregation also tried to copulate with males and only copulated more frequently with females at 18 days after emergence from soil (p < 0.001) in contrast to newly emerged, 7-day-old and 60-day-old beetles. Males and females spent more time in social contact with the opposite sex (p < 0.01) when they were 18 days old in contrast to 7-day-old beetles. Filter papers which had been in contact with 21-day-old beetles were highly attractive to similar-aged beetles of the opposite sex (p < 0.01). This suggests that chemical substances produced by the beetles themselves play a role in mating. Mating behaviour was characterised by a short pre-copulation courtship and female aggression towards other females and copulating couples. Both behaviours may be indicative of cryptic female choice. Delayed onset of reproductive behaviour is typical of many polygamous species, whilst the indispensability of aggregation for onset of sexual behaviour seems to be a feature unique to A. tumida. Both strategies support mass reproduction in this parasitic species, enabling A. tumida to overcome its honey bee host colony, and are probably triggered by chemotactic cues..

  1. Screening Commercially Available Entomopathogenic Biocontrol Agents for the Control of Aethina tumida (Coleoptera: Nitidulidae) in the UK.

    PubMed

    Cuthbertson, Andrew G S; Mathers, James J; Blackburn, Lisa F; Powell, Michelle E; Marris, Gay; Pietravalle, Stephane; Brown, Mike A; Budge, Giles E

    2012-08-09

    The Small hive beetle, Aethina tumida, is an invasive pest of honey bees. Indigenous to sub-Saharan Africa, it has now become established in North America and Australia. It represents a serious threat to European honey bees. Commercially available entomopathogenic agents were screened for their potential to control beetle larvae. Entomopathogenic fungi investigated had minimal impact. The nematodes Steinernema kraussei and S. carpocapsae provided excellent control with 100% mortality of larvae being obtained. Sequential applications of the nematodes following larvae entering sand to pupate also provided excellent control for up to 3 weeks. The information gained supports the development of contingency plans to deal with A. tumida should it occur in the UK, and is relevant to the management of Small hive beetle where it is already present.

  2. Transcriptomic and functional resources for the small hive beetle Aethina tumida, a worldwide parasite of honey bees.

    PubMed

    Tarver, Matthew R; Huang, Qiang; de Guzman, Lilia; Rinderer, Tom; Holloway, Beth; Reese, Justin; Weaver, Daniel; Evans, Jay D

    2016-09-01

    The small hive beetle (SHB), Aethina tumida, is a major pest of managed honey bee (Apis mellifera) colonies in the United States and Australia, and an emergent threat in Europe. While strong honey bee colonies generally keep SHB populations in check, weak or stressed colonies can succumb to infestations. This parasite has spread from a sub-Saharan Africa to three continents, leading to immense management and regulatory costs. We performed a transcriptomic analysis involving deep sequencing of multiple life stages and both sexes of this species. The assembled transcriptome appears to be nearly complete, as judged by conserved insect orthologs and the ability to find plausible homologs for 11,952 proteins described from the genome of the red flour beetle. Expressed genes include each of the major metabolic, developmental and sensory groups, along with genes for proteins involved with immune defenses and insecticide resistance. We also present a total of 23,085 high-quality SNP's for the assembled contigs. We highlight potential differences between this beetle and its honey bee hosts, and suggest mechanisms of future research into the biology and control of this species. SNP resources will allow functional genetic analyses and analyses of dispersal for this invasive pest. All resources are posted as Supplemental Tables at https://data.nal.usda.gov/dataset/data-transcriptomic-and-functional-resources-small-hive-beetle-aethina-tumida-worldwide, and at NCBI under Bioproject PRJNA256171. PMID:27453819

  3. Transcriptomic and functional resources for the small hive beetle Aethina tumida, a worldwide parasite of honey bees.

    PubMed

    Tarver, Matthew R; Huang, Qiang; de Guzman, Lilia; Rinderer, Tom; Holloway, Beth; Reese, Justin; Weaver, Daniel; Evans, Jay D

    2016-09-01

    The small hive beetle (SHB), Aethina tumida, is a major pest of managed honey bee (Apis mellifera) colonies in the United States and Australia, and an emergent threat in Europe. While strong honey bee colonies generally keep SHB populations in check, weak or stressed colonies can succumb to infestations. This parasite has spread from a sub-Saharan Africa to three continents, leading to immense management and regulatory costs. We performed a transcriptomic analysis involving deep sequencing of multiple life stages and both sexes of this species. The assembled transcriptome appears to be nearly complete, as judged by conserved insect orthologs and the ability to find plausible homologs for 11,952 proteins described from the genome of the red flour beetle. Expressed genes include each of the major metabolic, developmental and sensory groups, along with genes for proteins involved with immune defenses and insecticide resistance. We also present a total of 23,085 high-quality SNP's for the assembled contigs. We highlight potential differences between this beetle and its honey bee hosts, and suggest mechanisms of future research into the biology and control of this species. SNP resources will allow functional genetic analyses and analyses of dispersal for this invasive pest. All resources are posted as Supplemental Tables at https://data.nal.usda.gov/dataset/data-transcriptomic-and-functional-resources-small-hive-beetle-aethina-tumida-worldwide, and at NCBI under Bioproject PRJNA256171.

  4. Effects of a novel entomopathogenic nematode-infected host formulation on cadaver integrity, nematode yield, and suppression of Diaprepes abbreviatus and Aethina tumida.

    PubMed

    Shapiro-Ilan, David I; Morales-Ramos, Juan A; Rojas, Maria G; Tedders, Walker L

    2010-02-01

    An alternative approach to applying entomopathogenic nematodes entails the distribution of nematodes in their infected insect hosts. Protection of the infected host from rupturing, and improving ease of handling, may be necessary to facilitate application. In this study our objective was to test the potential of a new method of formulating the infected hosts, i.e., enclosing the infected host in masking tape. Tenebrio molitor L. cadavers infected with Heterorhabditis indica Poinar, Karunakar and David or Steinernema carpocapsae (Weiser) were wrapped in tape using an automatic packaging machine; the machine was developed to reduce labor and to standardize the final product. The effects of the tape formulation on the ability to protect the cadavers from mechanical damage, nematode yield, and pest control efficacy were tested. After exposure to mechanical agitation at 7-d-post-infection, S. carpocapsae cadavers in tape were more resistant to rupture than cadavers without tape, yet H. indica cadavers 7-d-post-infection were not affected by mechanical agitation (with or without tape), nor was either nematode affected when 4-d-old cadavers were tested. Experiments indicated that infective juvenile yield was not affected by the tape formulation. Laboratory experiments were conducted measuring survival of the root weevil, Diaprepes abbreviatus (L.), or the small hive beetle, Aethina tumida Murray, after the application of two H. indica-infected hosts with or without tape per 15 cm pot (filled with soil). A greenhouse experiment was also conducted in a similar manner measuring survival of D. abbreviatus. In all experiments, both the tape and no-tape treatments caused significant reductions in insect survival relative to the control, and no differences were detected between the nematode treatments. Fifteen days post-application, the infected host treatments caused up to 78% control in A. tumida, 91% control in D. abbreviatus in the lab, and 75% in the greenhouse. These

  5. Assessing the Role of Environmental Conditions on Efficacy Rates of Heterorhabditis indica (Nematoda: Heterorhabditidae) for Controlling Aethina tumida (Coleoptera: Nitidulidae) in Honey Bee (Hymenoptera: Apidae) Colonies: a Citizen Science Approach.

    PubMed

    Hill, Elizabeth S; Smythe, Ashleigh B; Delaney, Deborah A

    2016-02-01

    Certain species of entomopathogenic nematodes, such as Heterorhabditis indica Poinar, Karunakar & David, have the potential to be effective controls for Aethina tumida (Murray), or small hive beetles, when applied to the soil surrounding honey bee (Apis mellifera L.) hives. Despite the efficacy of H. indica, beekeepers have struggled to use them successfully as a biocontrol. It is believed that the sensitivity of H. indica to certain environmental conditions is the primary reason for this lack of success. Although research has been conducted to explore the impact of specific environmental conditions--such as soil moisture or soil temperature-on entomopathogenic nematode infectivity, no study to date has taken a comprehensive approach that considers the impact of multiple environmental conditions simultaneously. In exploring this, a multivariate logistic regression model was used to determine what environmental conditions resulted in reductions of A. tumida populations in honey bee colonies. To obtain the sample sizes necessary to run a multivariate logistic regression, this study utilized citizen scientist beekeepers and their hives from across the mid-Atlantic region of the United States. Results suggest that soil moisture, soil temperatures, sunlight exposure, and groundcover contribute to the efficacy of H. indica in reducing A. tumida populations in A. mellifera colonies. The results of this study offer direction for future research on the environmental preferences of H. indica and can be used to educate beekeepers about methods for better utilizing H. indica as a biological control. PMID:26519500

  6. Assessing the Role of Environmental Conditions on Efficacy Rates of Heterorhabditis indica (Nematoda: Heterorhabditidae) for Controlling Aethina tumida (Coleoptera: Nitidulidae) in Honey Bee (Hymenoptera: Apidae) Colonies: a Citizen Science Approach.

    PubMed

    Hill, Elizabeth S; Smythe, Ashleigh B; Delaney, Deborah A

    2016-02-01

    Certain species of entomopathogenic nematodes, such as Heterorhabditis indica Poinar, Karunakar & David, have the potential to be effective controls for Aethina tumida (Murray), or small hive beetles, when applied to the soil surrounding honey bee (Apis mellifera L.) hives. Despite the efficacy of H. indica, beekeepers have struggled to use them successfully as a biocontrol. It is believed that the sensitivity of H. indica to certain environmental conditions is the primary reason for this lack of success. Although research has been conducted to explore the impact of specific environmental conditions--such as soil moisture or soil temperature-on entomopathogenic nematode infectivity, no study to date has taken a comprehensive approach that considers the impact of multiple environmental conditions simultaneously. In exploring this, a multivariate logistic regression model was used to determine what environmental conditions resulted in reductions of A. tumida populations in honey bee colonies. To obtain the sample sizes necessary to run a multivariate logistic regression, this study utilized citizen scientist beekeepers and their hives from across the mid-Atlantic region of the United States. Results suggest that soil moisture, soil temperatures, sunlight exposure, and groundcover contribute to the efficacy of H. indica in reducing A. tumida populations in A. mellifera colonies. The results of this study offer direction for future research on the environmental preferences of H. indica and can be used to educate beekeepers about methods for better utilizing H. indica as a biological control.

  7. Winter losses of honeybee colonies (Hymenoptera: Apidae): the role of infestations with Aethina tumida (Coleoptera: Nitidulidae) and Varroa destructor (Parasitiformes: Varroidae).

    PubMed

    Schäfer, Marc O; Ritter, Wolfgang; Pettis, Jeff S; Neumann, Peter

    2010-02-01

    Multiple infections of managed honeybee, Apis mellifera, colonies are inevitable due to the ubiquitous ectoparasitic mite Varroa destructor and might be an underlying cause of winter losses. Here we investigated the role of adult small hive beetles, Aethina tumida, alone and in combination with V. destructor for winter losses and for infections with the microsporidian endoparasite Nosema ceranae. We found no significant influence of A. tumida and V. destructor alone or in combination on the numbers of N. ceranae spores. Likewise, A. tumida alone had no significant effects on winter losses, which is most likely due to the observed high winter mortality of the adult beetles. Therefore, our data suggest that A. tumida is unlikely to contribute to losses of overwintering honeybee colonies. However, high losses occurred in all groups highly infested with V. destructor, supporting the central role of the mite for colony losses.

  8. Organic acids and thymol: unsuitable alternative control of Aethina tumida Murray (Coleoptera: Nitidulidae)

    Technology Transfer Automated Retrieval System (TEKTRAN)

    To explore alternative small hive beetle control strategies, established Varroa destructor and Galleria mellonella treatments with organic acids (formic, lactic, oxalic and acetic) and thymol were investigated in the laboratory against eggs, larvae and adult small hive beetle (SHB). As formic and ox...

  9. Molecular characterization and pathogenicity of fungal isolates for use against the small hive beetle (Aethina tumida)

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The analysis of DNA sequences from fungal pathogens obtained from cadavers of the small hive beetle (SHB) collected from several apiaries in Florida revealed a mixture of saprobes and two potential primary entomopathogens, Metarhizium anisopliae and Beauveria bassiana. Spray tower bioassays indicate...

  10. Murray and the Omega Minus

    SciTech Connect

    Samios, N.P.

    2010-08-20

    The exciting findings and activities in particle physics in the 50's and 60's will be discussed from an experimentalist's viewpoint. Particular emphasis will be placed on the description of several crucial discoveries (including the omega minus) and on the remarkable insight, guidance, and major contributions of Murray Gell-Mann to the understanding of the symmetry of hadrons which led to the development of the standard model of the strong interactions.

  11. Murray and the Omega Minus

    NASA Astrophysics Data System (ADS)

    Samios, Nicholas P.

    The exciting findings and activities in particle physics in the 50's and 60's will be discussed from an experimentalist's viewpoint. Particular emphasis will be placed on the description of several crucial discoveries (including the omega minus) and on the remarkable insight, guidance, and major contributions of Murray Gell-Mann to the understanding of the symmetry of hadrons which led to the development of the standard model of the strong interactions.

  12. Murray and the Omega Minus

    NASA Astrophysics Data System (ADS)

    Samios, Nicholas P.

    2011-11-01

    The exciting findings and activities in particle physics in the 50's and 60's will be discussed from an experimentalist's viewpoint. Particular emphasis will be placed on the description of several crucial discoveries (including the omega minus) and on the remarkable insight, guidance, and major contributions of Murray Gell-Mann to the understanding of the symmetry of hadrons which led to the development of the standard model of the strong interactions.

  13. Elwood Murray: Pioneering Methodologist in Communication

    ERIC Educational Resources Information Center

    Brownell, Judi

    2014-01-01

    Elwood Murray (1897-1988) was a pioneer in communication education. Beginning in the 1930s, he applied nontraditional methods in the speech classroom to encourage students to internalize and apply what they learned, and to view knowledge holistically. Drawing on the work of Kunkel, Moreno, Lewin, and Korzybski, Murray focused on developing skills…

  14. Murray Gell-Mann -- a Scientific Biography

    NASA Astrophysics Data System (ADS)

    Fritzsch, Harald

    2011-11-01

    Murray Gell-Mann is one of the most outstanding scientists of the last century. At this conference on the occasion of his 80th birthday, the important scientific achievements of Gell-Mann will be discussed. I shall describe in particular his contributions to particle physics. Murray's father Arthur Gell-Mann grew up in Czernowitz, a city once belongs to the Austrian empire. Today, Czernowitz belongs to the Ukraine. Arthur Gell-Mann studied in Vienna and came to the United States in 1911. He lived and worked in New York, where he became the owner of a language school and married Pauline Reichstein...

  15. Arbovirus infection in a Murray Valley community.

    PubMed

    Fraser, J R; Christie, D G; Gust, I D; White, J; Leach, R; Macaulay, E D; Ahern, A P; Alexander, J; Jones, J M; Lung, D Y

    1986-02-01

    Serum antibodies to Ross River virus and Murray Valley encephalitis virus were measured during 1974-1975 in residents of Echuca, an urban Murray Valley community. A representative group of volunteers was obtained by random selection of households. The prevalence of antibodies to both viruses increased progressively with age. Prevalence was equal in both sexes for both viruses in all age groups, indicating that the risk of infection was mainly determined by geography rather than by personal activities. Antibody levels remained unchanged in the following year when there was no disease activity in the area. The stability of antibody levels permitted retrospective estimates of mean rates of infection. These were approximately 0.4% per annum for both viruses when age was used as the index for years of exposure. With allowance for other factors, the best estimate for both virus infections is probably closer to 1%. The morbidity rate for Ross River virus infection appeared to be low. It is concluded that infection with Ross River virus and with Murray Valley encephalitis-related viruses is endemic in the Murray Valley. PMID:3010928

  16. Conference Teaching: A Response to Donald M. Murray

    ERIC Educational Resources Information Center

    Athanasourelis, John Paul

    2006-01-01

    This instructional note describes the successful application and adaptation of teacher-student conference techniques as suggested by Donald M. Murray in his book "A Writer Teaches Writing." Athanasourelis states that while he believes that Murray overestimates students' abilities when he describes the conference process as "the working talk of…

  17. Aloneness and the Complicated Selves of Donald M. Murray

    ERIC Educational Resources Information Center

    Stewart, Thomas J.

    2011-01-01

    This article examines Donald M. Murray's ideas about what he considered the essential solitude of all writing and what happens within that solitude. Murray, a pioneer of the process and modern expressivism movements in composition, identified a number of forces that he felt were at work within his mind whenever he wrote; this complicated aloneness…

  18. Interview with Dr Joseph Murray (by Francis L Delmonico).

    PubMed

    Murray, Joseph

    2002-10-01

    The Editors asked Dr Delmonico to interview Dr Joseph Murray, winner of the Nobel prize in Medicine 1990 for performing the first successful renal transplant, to record recollections of the issues of the 1950s, when clinical transplantation was born, on Dr Murray's medical career in transplantation, and on some contemporary issues.

  19. Pulsatile blood flow, shear force, energy dissipation and Murray's Law

    PubMed Central

    Painter, Page R; Edén, Patrik; Bengtsson, Hans-Uno

    2006-01-01

    Background Murray's Law states that, when a parent blood vessel branches into daughter vessels, the cube of the radius of the parent vessel is equal to the sum of the cubes of the radii of daughter blood vessels. Murray derived this law by defining a cost function that is the sum of the energy cost of the blood in a vessel and the energy cost of pumping blood through the vessel. The cost is minimized when vessel radii are consistent with Murray's Law. This law has also been derived from the hypothesis that the shear force of moving blood on the inner walls of vessels is constant throughout the vascular system. However, this derivation, like Murray's earlier derivation, is based on the assumption of constant blood flow. Methods To determine the implications of the constant shear force hypothesis and to extend Murray's energy cost minimization to the pulsatile arterial system, a model of pulsatile flow in an elastic tube is analyzed. A new and exact solution for flow velocity, blood flow rate and shear force is derived. Results For medium and small arteries with pulsatile flow, Murray's energy minimization leads to Murray's Law. Furthermore, the hypothesis that the maximum shear force during the cycle of pulsatile flow is constant throughout the arterial system implies that Murray's Law is approximately true. The approximation is good for all but the largest vessels (aorta and its major branches) of the arterial system. Conclusion A cellular mechanism that senses shear force at the inner wall of a blood vessel and triggers remodeling that increases the circumference of the wall when a shear force threshold is exceeded would result in the observed scaling of vessel radii described by Murray's Law. PMID:16923189

  20. 7. Historic American Buildings Survey, John T. Murray, Photographer, May ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    7. Historic American Buildings Survey, John T. Murray, Photographer, May 6, 1936. DETAIL OF HOIST IN ATTIC. - Fort Smith, Commissary Building, 100 South Garrison Avenue, Fort Smith, Sebastian County, AR

  1. 6. Historic American Buildings Survey, John T. Murray, Photographer, May ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    6. Historic American Buildings Survey, John T. Murray, Photographer, May 6, 1936. TYPICAL FIRST FLOOR FIREPLACE, NORTHWEST WALL. - Fort Smith, Commissary Building, 100 South Garrison Avenue, Fort Smith, Sebastian County, AR

  2. Reconsiderations: Donald Murray and the Pedagogy of Surprise

    ERIC Educational Resources Information Center

    Ballenger, Bruce

    2008-01-01

    Toward the end of his life, Donald Murray felt that his approach to writing instruction was no longer appreciated by journals in his field. Nevertheless, his emphasis on encouraging students to surprise themselves through informal writing still has considerable value. (Contains 1 note.)

  3. Water reform in the Murray-Darling Basin

    NASA Astrophysics Data System (ADS)

    Connell, Daniel; Grafton, R. Quentin

    2011-12-01

    In Australia's Murray-Darling Basin the Australian and state governments are attempting to introduce a system of water management that will halt ongoing decline in environmental conditions and resource security and provide a robust foundation for managing climate change. This parallels similar efforts being undertaken in regions such as southern Africa, the southern United States, and Spain. Central to the project is the Australian government's Water Act 2007, which requires the preparation of a comprehensive basin plan expected to be finalized in 2011. This paper places recent and expected developments occurring as part of this process in their historical context and examines factors that could affect implementation. Significant challenges to the success of the basin plan include human resource constraints, legislative tensions within the Australian federal system, difficulties in coordinating the network of water-related agencies in the six jurisdictions with responsibilities in the Murray-Darling Basin, and social, economic, and environmental limitations that restrict policy implementation.

  4. Lake Murray, Fly and Strickland River Basins, Papua, New Guinea

    NASA Technical Reports Server (NTRS)

    1991-01-01

    Lake Murray, a manmade reservoir, lies between the Fly and Strickland River Basins, Papua, New Guinea (7.0S, 141.5E). The region, photographed in sunglint, shows the water level in the reservoir and the full extent of the drainage basins of both river systems as the rivers meander through wide alluvial floodplains. Some forest clearing can be seen in places throughout the region, but most of the area remains in closed canopy forest.

  5. George Murray Levick (1876-1956), Antarctic explorer.

    PubMed

    Guly, Henry R

    2016-02-01

    Murray Levick is best known for being one of the surgeons on Scott's Terra Nova Antarctic expedition (1910-1913) and, as a member of the Northern Party of that expedition, spending a winter living in a snow hole when the ship was unable to collect the men. However, his career encompassed much more than that. He served in the Royal Navy during both World Wars and was a pioneer in physical medicine and rehabilitation. He also founded the British Schools Exploring Society.

  6. Sources of dissolved salts in the central Murray Basin, Australia

    USGS Publications Warehouse

    Jones, B.F.; Hanor, J.S.; Evans, W.R.

    1994-01-01

    Large areas of the Australian continent contain scattered saline lakes underlain by shallow saline groundwaters of regional extent and debated origin. The normative salt composition of subsurface pore fluids extracted by squeezing cores collected during deep drilling at Piangil West 2 in the central Murray Basin in southeastern Australia, and of surface and shallow subsurface brines produced by subaerial evaporation in the nearby Lake Tyrrell systems, helps constrain interpretation of the origin of dissolved solutes in the groundwaters of this part of the continent. Although regional sedimentation in the Murray Basin has been dominantly continental except for a marine transgression in Oligocene-Pliocene time, most of the solutes in saline surface and subsurface waters in the central Murray Basin have a distinctly marine character. Some of the Tyrrell waters, to the southwest of Piangil West 2, show the increase in NaCl and decrease in sulfate salts expected with evaporative concentration and gypsum precipitation in an ephemeral saline lake or playa environment. The salt norms for most of the subsurface saline waters at Piangil West 2 are compatible with the dilution of variably fractionated marine bitterns slightly depleted in sodium salts, similar to the more evolved brines at Lake Tyrrell, which have recharged downward after evaporation at the surface and then dissolved a variable amount of gypsum at depth. Apparently over the last 0.5 Ma significant quantities of marine salt have been blown into the Murray Basin as aerosols which have subsequently been leached into shallow regional groundwater systems basin-wide, and have been transported laterally into areas of large evaporative loss in the central part of the basin. This origin for the solutes helps explain why the isotopic compositions of most of the subsurface saline waters at Piangil West 2 have a strong meteoric signature, whereas the dissolved salts in these waters appear similar to a marine assemblage

  7. An empirical comparison of Maslow's and Murray's needs systems.

    PubMed

    Cunningham, C H; Wakefield, J A; Ward, G R

    1975-12-01

    The Work Motivation Inventory (WMI), a measure of Maslow's hierarchy of needs, and the Edwards Personal Preference Schedule (EPPS), a measure of Murray's manifest needs, were administered to 372 undergraduates. The two instruments were compared using canonical analysis. The analysis revealed three significant relationships between components of the two instruments. The first relationship supported Maslow's need hierarchy in general and its measurement by the WMI. The second suggested a fluctuating relationship between giving and receiving help and the levels of Maslow's hierarchy. The third relationship suggested that need for Achievement is associated with the intermediate levels of Maslow's hierarchy.

  8. 52. The Murray Motors Building on the right (101 South ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    52. The Murray Motors Building on the right (101 South Colorado) is a one story building with a full basement for automobile storage. It has pest and beam construction, and has been altered only slightly. Both street facades have low, stepped gables. Beyond it, is the Parisian Dye House (56-60 West Galena), built in 1891 to house the Paumie Cleaners. The building still has its original cast-iron storefront on the ground floor as well as the original pressed-tin ceiling and woodwork inside. Metal window sills and lintles have been painted. - Butte Historic District, Bounded by Copper, Arizona, Mercury & Continental Streets, Butte, Silver Bow County, MT

  9. Revisiting diagenesis on the Ontong-Java Plateau: evidence for authigenic crust precipitation in Globortalia tumida

    NASA Astrophysics Data System (ADS)

    Read, Elizabeth; Branson, Oscar; Redfern, Simon; Rau, Christoph; Elderfield, Henry

    2015-04-01

    Foraminifera hold the key to the past climate of the Earth. They can be retrieved from core tops of sea floor sediments, allowing the record to extend back many thousands to millions of years. The time lag between the foraminifera formation, deposition, and the routine analysis can therefore be very long. The sites from which foraminifera are collected and cored experience different physicochemical conditions to those which they were formed and deposited in. The samples used in this study are from the Ontong-Java Plateau, west equatorial Pacific, and were studied in Brown and Elderfield, 1996. Synchrotron X-ray computed tomography (sXCT) and electron micro-probe analyses were carried out on samples collected from different core top depths, chosen to span the lysocline in the area, in order to re-asses the character and extent of diagenetic alteration. Previous work on Globorotalia tumida collected in the area (Brown and Elderfield, 1996) found that high-Mg calcite of the test is preferentially dissolved, leading to significantly reduced whole test Mg/Ca and Sr/Ca. Dissolution of high-Mg calcite was directly observed using the sXCT, confirming previous work of Brown and Elderfield, 1996. In addition to this, the sXCT also exposed a thickening of external test walls with increasing core top depth, with further chemically and structurally distinct calcite present outside the periphery of the test. Electron micro-probe analyses revealed this new calcitic material to have a generally lower trace element composition that the original calcitic test. This suggests a dissolution of the internal high-Mg calcite, as well as diagenetic precipitation of calcite external to the test, generally lower in trace elements. This leads to the proposal of a closed-loop dissolution-precipitation model, which may be able to account for the phenomena and trends observed. This demonstrates the impact of two simultaneous diagenetic aleration processes, with notable impacts on resulting

  10. A Sense of Themselves: Elizabeth Murray's Leadership in School and Community.

    ERIC Educational Resources Information Center

    Harris, Carol E.

    This biography profiles the late Elizabeth (Betty) Murray, an educator and community leader from Tatamagouche, Nova Scotia (Canada). Chapter 1 looks at Murray's leadership skills as, at age 77, she prepared and directed her annual musical in which the people of Tatamagouche recreate a significant moment in their village history. Chapter 2 moves…

  11. 76 FR 14407 - Exchange of Letters Between Dr. Murray M. Lumpkin, Deputy Commissioner, International Programs...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-16

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF HEALTH AND HUMAN SERVICES Food and Drug Administration Exchange of Letters Between Dr. Murray M. Lumpkin, Deputy... providing notice of exchange of letters between Dr. Murray M. Lumpkin, Deputy Commissioner,...

  12. Bob McMurray: Award for Distinguished Scientific Early Career Contributions to Psychology

    ERIC Educational Resources Information Center

    American Psychologist, 2012

    2012-01-01

    Presents a short biography of one of the winners of the American Psychological Association's Award for Distinguished Scientific Early Career Contributions to Psychology. The 2012 winner is Bob McMurray for pioneering research on speech and language processing in infants and adults. McMurray has conducted influential work on the graded nature of…

  13. Diagenetic Crystal Growth in the Murray Formation, Gale Crater, Mars

    NASA Technical Reports Server (NTRS)

    Kah, L. C.; Kronyak, R. E.; Ming, D. W.; Grotzinger, J. P.; Schieber, J.; Sumner, D. Y.; Edgett, K. S.

    2015-01-01

    The Pahrump region (Gale Crater, Mars) marks a critical transition between sedimentary environments dominated by alluvial-to-fluvial materials associated with the Gale crater rim, and depositional environments fundamentally linked to the crater's central mound, Mount Sharp. At Pahrump, the Murray formation consists of an approximately 14-meter thick succession dominated by massive to finely laminated mudstone with occasional interbeds of cross-bedded sandstone, and is best interpreted as a dominantly lacustrine environment containing tongues of prograding fluvial material. Murray formation mudstones contain abundant evidence for early diagenetic mineral precipitation and its subsequent removal by later diagenetic processes. Lenticular mineral growth is particularly common within lacustrine mudstone deposits at the Pahrump locality. High-resolution MAHLI images taken by the Curiosity rover permit detailed morphological and spatial analysis of these features. Millimeter-scale lenticular features occur in massive to well-laminated mudstone lithologies and are interpreted as pseudomorphs after calcium sulfate. The distribution and orientation of lenticular features suggests deposition at or near the sediment-water (or sediment-air) interface. Retention of chemical signals similar to host rock suggests that original precipitation was likely poikilotopic, incorporating substantial amounts of the primary matrix. Although poikilotopic crystal growth is common in burial environments, it also occurs during early diagenetic crystal growth within unlithified sediment where high rates of crystal growth are common. Loss of original calcium sulfate mineralogy suggests dissolution by mildly acidic, later-diagenetic fluids. As with lenticular voids observed at Meridiani by the Opportunity Rover, these features indicate that calcium sulfate deposition may have been widespread on early Mars; dissolution of depositional and early diagenetic minerals is a likely source for both calcium

  14. Geologic map of the Murray Quadrangle, Newton County, Arkansas

    USGS Publications Warehouse

    Hudson, Mark R.; Turner, Kenzie J.

    2016-01-01

    This map summarizes the geology of the Murray quadrangle in the Ozark Plateaus region of northern Arkansas. Geologically, the area is on the southern flank of the Ozark dome, an uplift that has the oldest rocks exposed at its center, in Missouri. Physiographically, the Murray quadrangle is within the Boston Mountains, a high plateau region underlain by Pennsylvanian sandstones and shales. Valleys of the Buffalo River and Little Buffalo River and their tributaries expose an approximately 1,600-ft-thick (488-meter-thick) sequence of Ordovician, Mississippian, and Pennsylvanian carbonate and clastic sedimentary rocks that have been mildly deformed by a series of faults and folds. The Buffalo National River, a park that encompasses the Buffalo River and adjacent land that is administered by the National Park Service is present at the northwestern edge of the quadrangle.Mapping for this study was carried out by field inspection of numerous sites and was compiled as a 1:24,000 geographic information system (GIS) database. Locations and elevation of sites were determined with the aid of a global positioning satellite receiver and a hand-held barometric altimeter that was frequently recalibrated at points of known elevation. Hill-shade relief and slope maps derived from a U.S. Geological Survey 10-meter digital elevation model as well as orthophotographs were used to help trace ledge-forming units between field traverses within the Upper Mississippian and Pennsylvanian part of the stratigraphic sequence. Strike and dip of beds were typically measured along stream drainages or at well-exposed ledges. Structure contours, constructed on the top of the Boone Formation and the base of a prominent sandstone unit within the Bloyd Formation, were drawn based on the elevations of field sites on these contacts well as other limiting information for their minimum elevations above hilltops or their maximum elevations below valley bottoms.

  15. Geologic map of the Murray Quadrangle, Newton County, Arkansas

    USGS Publications Warehouse

    Hudson, Mark R.; Turner, Kenzie J.

    2016-07-06

    This map summarizes the geology of the Murray quadrangle in the Ozark Plateaus region of northern Arkansas. Geologically, the area is on the southern flank of the Ozark dome, an uplift that has the oldest rocks exposed at its center, in Missouri. Physiographically, the Murray quadrangle is within the Boston Mountains, a high plateau region underlain by Pennsylvanian sandstones and shales. Valleys of the Buffalo River and Little Buffalo River and their tributaries expose an approximately 1,600-ft-thick (488-meter-thick) sequence of Ordovician, Mississippian, and Pennsylvanian carbonate and clastic sedimentary rocks that have been mildly deformed by a series of faults and folds. The Buffalo National River, a park that encompasses the Buffalo River and adjacent land that is administered by the National Park Service is present at the northwestern edge of the quadrangle.Mapping for this study was carried out by field inspection of numerous sites and was compiled as a 1:24,000 geographic information system (GIS) database. Locations and elevation of sites were determined with the aid of a global positioning satellite receiver and a hand-held barometric altimeter that was frequently recalibrated at points of known elevation. Hill-shade relief and slope maps derived from a U.S. Geological Survey 10-meter digital elevation model as well as orthophotographs were used to help trace ledge-forming units between field traverses within the Upper Mississippian and Pennsylvanian part of the stratigraphic sequence. Strike and dip of beds were typically measured along stream drainages or at well-exposed ledges. Structure contours, constructed on the top of the Boone Formation and the base of a prominent sandstone unit within the Bloyd Formation, were drawn based on the elevations of field sites on these contacts well as other limiting information for their minimum elevations above hilltops or their maximum elevations below valley bottoms.

  16. Variability in Small Hive Beetle (Coleoptera: Nitidulidae) Reproduction in Laboratory and Field Experiments.

    PubMed

    Meikle, William G; Holst, Niels; Cook, Steven C; Patt, Joseph M

    2015-06-01

    Experiments were conducted to examine how several key factors affect population growth of the small hive beetle, Aethina tumida Murray (Coleoptera: Nitidulidae). Laboratory experiments were conducted to examine effects of food quantity and temperature on reproduction of cohorts of young A. tumida adults (1:1 sex ratio) housed in experimental arenas. Daily numbers and total mass of larvae exiting arenas were highly variable within treatment. Either one or two cohorts of larvae were observed exiting the arenas. Food quantity, either 10 g or 20 g, did not significantly affect the number of larvae exiting arenas at 32°C, but did at 28°C; arenas provided 20 g food produced significantly more larvae than arenas provided 10 g. Temperature did not affect the total mass of larvae provided 10 g food, but did affect larval mass provided 20 g; beetles kept at 28°C produced more larval mass than at 32°C. Field experiments were conducted to examine A. tumida reproductive success in full strength bee colonies. Beetles were introduced into hives as egg-infested frames and as adults, and some bee colonies were artificially weakened through removal of sealed brood. Efforts were unsuccessful; no larvae were observed exiting from, or during the inspection of, any hives. Possible reasons for these results are discussed. The variability observed in A. tumida reproduction even in controlled laboratory conditions and the difficulty in causing beetle infestations in field experiments involving full colonies suggest that accurately forecasting the A. tumida severity in such colonies will be difficult.

  17. Variability in Small Hive Beetle (Coleoptera: Nitidulidae) Reproduction in Laboratory and Field Experiments.

    PubMed

    Meikle, William G; Holst, Niels; Cook, Steven C; Patt, Joseph M

    2015-06-01

    Experiments were conducted to examine how several key factors affect population growth of the small hive beetle, Aethina tumida Murray (Coleoptera: Nitidulidae). Laboratory experiments were conducted to examine effects of food quantity and temperature on reproduction of cohorts of young A. tumida adults (1:1 sex ratio) housed in experimental arenas. Daily numbers and total mass of larvae exiting arenas were highly variable within treatment. Either one or two cohorts of larvae were observed exiting the arenas. Food quantity, either 10 g or 20 g, did not significantly affect the number of larvae exiting arenas at 32°C, but did at 28°C; arenas provided 20 g food produced significantly more larvae than arenas provided 10 g. Temperature did not affect the total mass of larvae provided 10 g food, but did affect larval mass provided 20 g; beetles kept at 28°C produced more larval mass than at 32°C. Field experiments were conducted to examine A. tumida reproductive success in full strength bee colonies. Beetles were introduced into hives as egg-infested frames and as adults, and some bee colonies were artificially weakened through removal of sealed brood. Efforts were unsuccessful; no larvae were observed exiting from, or during the inspection of, any hives. Possible reasons for these results are discussed. The variability observed in A. tumida reproduction even in controlled laboratory conditions and the difficulty in causing beetle infestations in field experiments involving full colonies suggest that accurately forecasting the A. tumida severity in such colonies will be difficult. PMID:26470208

  18. Integrated assessment of wastewater treatment plant effluent estrogenicity in the Upper Murray River, Australia, using the native Murray rainbowfish (Melanotaenia fluviatilis)

    USGS Publications Warehouse

    Vajda, Alan M.; Kumar, Anupama; Woods, Marianne; Williams, Mike; Doan, Hai; Tolsher, Peter; Kookana, Rai S.; Barber, Larry B.

    2016-01-01

    The contamination of major continental river systems by endocrine-active chemicals (EACs) derived from the discharge of wastewater treatment plant (WWTP) effluents can affect human and ecosystem health. As part of a long-term effort to develop a native fish model organism for assessment of endocrine disruption in Australia's largest watershed, the Murray-Darling River Basin, the present study evaluated endocrine disruption in adult males of the native Australian Murray rainbowfish (Melanotaenia fluviatilis) exposed to effluent from an activated sludge WWTP and water from the Murray River during a 28-d, continuous-flow, on-site experiment. Analysis of the WWTP effluent and river water detected estrone and 17β-estradiol at concentrations up to approximately 25 ng L−1. Anti-estrogenicity of effluent samples was detected in vitro using yeast-based bioassays (yeast estrogen screen) throughout the experiment, but estrogenicity was limited to the first week of the experiment. Histological evaluation of the testes indicated significant suppression of spermatogenesis by WWTP effluent after 28 d of exposure. Plasma vitellogenin concentrations and expression of vitellogenin messenger RNA in liver were not significantly affected by exposure to WWTP effluent. The combination of low contaminant concentrations in the WWTP effluent, limited endocrine disrupting effects in the Murray rainbowfish, and high in-stream dilution factors (>99%) suggest minimal endocrine disruption impacts on native Australian fish in the Murray River downstream from the WWTP outfall. 

  19. Integrated assessment of wastewater treatment plant effluent estrogenicity in the Upper Murray River, Australia, using the native Murray rainbowfish (Melanotaenia fluviatilis).

    PubMed

    Vajda, Alan M; Kumar, Anupama; Woods, Marianne; Williams, Mike; Doan, Hai; Tolsher, Peter; Kookana, Rai S; Barber, Larry B

    2015-05-01

    The contamination of major continental river systems by endocrine-active chemicals (EACs) derived from the discharge of wastewater treatment plant (WWTP) effluents can affect human and ecosystem health. As part of a long-term effort to develop a native fish model organism for assessment of endocrine disruption in Australia's largest watershed, the Murray-Darling River Basin, the present study evaluated endocrine disruption in adult males of the native Australian Murray rainbowfish (Melanotaenia fluviatilis) exposed to effluent from an activated sludge WWTP and water from the Murray River during a 28-d, continuous-flow, on-site experiment. Analysis of the WWTP effluent and river water detected estrone and 17β-estradiol at concentrations up to approximately 25 ng L(-1) . Anti-estrogenicity of effluent samples was detected in vitro using yeast-based bioassays (yeast estrogen screen) throughout the experiment, but estrogenicity was limited to the first week of the experiment. Histological evaluation of the testes indicated significant suppression of spermatogenesis by WWTP effluent after 28 d of exposure. Plasma vitellogenin concentrations and expression of vitellogenin messenger RNA in liver were not significantly affected by exposure to WWTP effluent. The combination of low contaminant concentrations in the WWTP effluent, limited endocrine disrupting effects in the Murray rainbowfish, and high in-stream dilution factors (>99%) suggest minimal endocrine disruption impacts on native Australian fish in the Murray River downstream from the WWTP outfall. PMID:25645549

  20. Integrated assessment of wastewater treatment plant effluent estrogenicity in the Upper Murray River, Australia, using the native Murray rainbowfish (Melanotaenia fluviatilis).

    PubMed

    Vajda, Alan M; Kumar, Anupama; Woods, Marianne; Williams, Mike; Doan, Hai; Tolsher, Peter; Kookana, Rai S; Barber, Larry B

    2015-05-01

    The contamination of major continental river systems by endocrine-active chemicals (EACs) derived from the discharge of wastewater treatment plant (WWTP) effluents can affect human and ecosystem health. As part of a long-term effort to develop a native fish model organism for assessment of endocrine disruption in Australia's largest watershed, the Murray-Darling River Basin, the present study evaluated endocrine disruption in adult males of the native Australian Murray rainbowfish (Melanotaenia fluviatilis) exposed to effluent from an activated sludge WWTP and water from the Murray River during a 28-d, continuous-flow, on-site experiment. Analysis of the WWTP effluent and river water detected estrone and 17β-estradiol at concentrations up to approximately 25 ng L(-1) . Anti-estrogenicity of effluent samples was detected in vitro using yeast-based bioassays (yeast estrogen screen) throughout the experiment, but estrogenicity was limited to the first week of the experiment. Histological evaluation of the testes indicated significant suppression of spermatogenesis by WWTP effluent after 28 d of exposure. Plasma vitellogenin concentrations and expression of vitellogenin messenger RNA in liver were not significantly affected by exposure to WWTP effluent. The combination of low contaminant concentrations in the WWTP effluent, limited endocrine disrupting effects in the Murray rainbowfish, and high in-stream dilution factors (>99%) suggest minimal endocrine disruption impacts on native Australian fish in the Murray River downstream from the WWTP outfall.

  1. Paraffinic hydrocarbons in the Orgueil, Murray, Mokoia and other meteorites.

    PubMed

    Oro, J; Nooner, D W; Zlatkis, A; Wikstrom, S A

    1966-01-01

    Small samples of the Orgueil (Wiik Type I), Murray (Wiik Type II), Mokoia (Wiik Type III) and other meteorites (Alais, Ivuna, Al Rais, Bells, Cold Bokkeveld, Mighei, Nogoya, Santa Cruz, Grosnaja, Kaba, Lance, Ornans, Chainpur, Karoonda, Warrenton, and St. Caprais) were extracted with organic solvents, fractionated by silica gel chromatography, and analyzed by gas chromatography and by a new gas chromatographic-mass spectrometric technique. Only the high molecular weight hydrocarbons eluted by n-heptane were analyzed. The following observations were made: All meteorites contain paraffinic hydrocarbons in varying amounts and with a certain distribution. Normal and isomeric alkanes from Cl5 to about C25 with a maximum at C19-C21 were found in the Orgueil, Murray and Mokoia meteorites. Pristane and phytane, two saturated polyisoprenoid hydrocarbons, known to be degradation products of chlorophyll, were found in all meteorites except the Ornans, although in several (Type I and Type III, except Mokoia) the amounts were very small. No predominance of odd over even carbon-number hydrocarbons was observed except in the C22-C27 normal alkane range of some samples of the Orgueil. The concentration of alkanes in certain samples of the Orgueil was found to be about one order of magnitude lower than in others indicating a significant heterogeneity in the distribution of hydrocarbons. Practically all the meteorites of Type II and some of Type III (Mokoia) gave an essentially identical or very similar hydrocarbon chromatographic pattern, indicating a common origin for the hydrocarbons. The distribution of paraffinic hydrocarbons, including pristane and phytane, in some of these meteorites was found similar to that of microfossil-bearing pre-Cambrian rocks 2 x 10(9) years old or older. The Orguiel was similar to the Gunflint chert and Type II meteorites were similar to the Soudan rock. It remains to be seen whether these hydrocarbons were formed on the earth-moon system as

  2. Identification of Presolar Spinel Grains from a Murray Residue by Multi-Detection Raster Imaging

    NASA Astrophysics Data System (ADS)

    Nguyen, A.; Zinner, E.; Lewis, R. S.

    2003-03-01

    Multi-detection raster imaging with the NanoSIMS on Murray separate CG led to the identification of 40 presolar spinel grains. This detection mode is an efficient means of locating rare presolar oxide grains.

  3. On Murray Jackson's 1961 'Chair, couch and countertransference'.

    PubMed

    Connolly, Angela

    2015-09-01

    One of the problems facing psychoanalysts of all schools is that theory has evolved at a much faster pace than practice. Whereas there has been an explosion of theory, practice has remained, at least officially, static and unchanging. It is in this sense that Murray Jackson's 1961 paper is still relevant today. Despite the rise of the new relational and intersubjective paradigms, most psychoanalysts, and not a few Jungian analysts, still seem to feel that the couch is an essential component of the analytical setting and process. If the use of the couch is usually justified by the argument that it favours regression, facilitates analytical reverie and protects the patient from the influence of the analyst, over time many important psychoanalysts have come to challenge this position. Increasingly these analysts suggest that the use of the couch may actually be incompatible with the newer theoretical models. This contention is strengthened by some of the findings coming from the neurosciences and infant research. This underlines the necessity of empirical research to verify the clinical effectiveness of these different positions, couch or face-to-face, but it is exactly this type of research that is lacking. PMID:26274846

  4. On Murray Jackson's 1961 'Chair, couch and countertransference'.

    PubMed

    Connolly, Angela

    2015-09-01

    One of the problems facing psychoanalysts of all schools is that theory has evolved at a much faster pace than practice. Whereas there has been an explosion of theory, practice has remained, at least officially, static and unchanging. It is in this sense that Murray Jackson's 1961 paper is still relevant today. Despite the rise of the new relational and intersubjective paradigms, most psychoanalysts, and not a few Jungian analysts, still seem to feel that the couch is an essential component of the analytical setting and process. If the use of the couch is usually justified by the argument that it favours regression, facilitates analytical reverie and protects the patient from the influence of the analyst, over time many important psychoanalysts have come to challenge this position. Increasingly these analysts suggest that the use of the couch may actually be incompatible with the newer theoretical models. This contention is strengthened by some of the findings coming from the neurosciences and infant research. This underlines the necessity of empirical research to verify the clinical effectiveness of these different positions, couch or face-to-face, but it is exactly this type of research that is lacking.

  5. Source of shallow Simpson Group Oil in Murray County, Oklahoma

    SciTech Connect

    Zemmels, I.; Tappmeyer, D.M.; Walters, C.C. )

    1987-02-01

    Oils produced from the Simpson Group (Middle Ordovician) in three shallow fields located north of the Arbuckle Mountains in Murray County, Oklahoma, have widely differing compositions: SW Sandy Creek, 28.9{degree} API, 0.57% sulfur; Davis NE, 25.9{degree} API, 0.72% sulfur; Sulfur NW, 16.4{degree} API, 1.44% sulfur. From gas chromatography and biomarker analysis, they determined that the oils were derived from the same source and that the differences in composition are due to biodegradation of the oils in the shallow reservoirs. A comparison of the biomarker assemblage of the Simpson Group oils to several other oils produced in the Arbuckle Mountain area showed that the Simpson Group assemblage highly resembled the assemblage of a Woodford Formation oil (Devonian) but had no similarity to a Viola Formation oil (upper Middle Ordovician). The Simpson Group oils also differed markedly from an oil produced from the Arbuckle Group (Lower Ordovician) in the nearby, shallow Southeast Hoover field. Their data suggest that the source of the shallow Simpson Group oils is the Woodford Formation located in the downthrown Mill Creek syncline south and west of these fields. A large vertical migration along faults or within the fault block is implied by this geometry. However, the Arbuckle Group oil from the Southeast Hoover field, south of the syncline, has a different source.

  6. Oviposition by small hive beetles elicits hygienic responses from Cape honeybees.

    PubMed

    Ellis, J D; Richards, C S; Hepburn, H R; Elzen, P J

    2003-11-01

    Two novel behaviours, both adaptations of small hive beetles ( Aethina tumida Murray) and Cape honeybees ( Apis mellifera capensis Esch.), are described. Beetles puncture the sides of empty cells and oviposit under the pupae in adjoining cells. However, bees detect this ruse and remove infested brood (hygienic behaviour), even under such well-disguised conditions. Indeed, bees removed 91% of treatment brood (brood cells with punctured walls caused by beetles) but only 2% of control brood (brood not exposed to beetles). Only 91% of treatment brood actually contained beetle eggs; the data therefore suggest that bees remove only that brood containing beetle eggs and leave uninfected brood alone, even if beetles have accessed (but not oviposited on) the brood. Although this unique oviposition strategy by beetles appears both elusive and adaptive, Cape honeybees are able to detect and remove virtually all of the infested brood.

  7. Authigenesis/Diagenesis of the Murray Formation Mudstone in Gale Crater, Mars

    NASA Technical Reports Server (NTRS)

    Ming, D. W.; Rampe, E. B.; Grotzinger, J. P.; Hurowitz, J. A.; Morris, R. V.; Yen, A. S.; Blake, D. B.; Geller, R.; Sutter, B.

    2016-01-01

    The Mars Science Laboratory rover Curiosity has been exploring sedimentary deposits in Gale crater since August, 2012. The rover has traversed up section through approximately 150 m of sedimentary rocks deposited in fluvial, deltaic, and lacustrine environments (Bradbury group and overlying Mount Sharp group). The Murray formation lies at the base of the Mt. Sharp group and has been interpreted to be a finely laminated mudstone likely deposited in a subaqueous lacustrine environment. Four drill samples from several elevations in the Murray fm have been acquired by the rover's sampling system and delivered to the CheMin XRD instrument. The lower section of the Murray fm contains 2:1 phyllosilicate(s), hematite, jarosite, XRD amorphous materials, and primary basaltic minerals. Further up section, the Murray fm contains magnetite, cristobalite, tridymite, abundant Si-rich XRD amorphous materials along with plagioclase and K-feldspars. Murray formation materials appear to have been altered under an open hydrologic system based on the bulk chemistry of these materials measured by the Alpha Particle X-ray Spectrometer (APXS). The 2:1 phyllosilicate only occurs in the lowermost section of the Murray fm and may be detrital or formed during authigenesis of Murray fm materials, similar to the Fe-saponite and magnetite detected in a mudstone in the Yellowknife Bay fm near Curiosity's landing site (stratigraphically at the base of the Bradbury group). The occurrence of jarosite and hematite in the lower section indicates an acidic diagenetic event. These phases may have formed via several acidic alteration mechanisms, including (1) oxidative weathering of mafic igneous rocks containing sulfides; (2) sulfuric acid weathering of Fe-bearing phases; and (3) near-neutral pH subsurface solutions rich in Fe2(+) that were rapidly oxidized to Fe3(+), which produced excess acidity. The transition from abundant hematite in the lowermost Murray fm to magnetite moving up section may

  8. Standard methods for small hive beetle research

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Small hive beetles, Aethina tumida, are parasites and scavengers of honey bee and other social bee colonies native to sub-Saharan Africa, where they are a minor pest only. In contrast, the beetles can be harmful parasites of European honey bee subspecies. Very rapidly after A. tumida established pop...

  9. Who’s your mama? Riverine hybridisation of threatened freshwater Trout Cod and Murray Cod

    PubMed Central

    Unmack, Peter J.; Dyer, Fiona J.; Lintermans, Mark

    2016-01-01

    Rates of hybridization and introgression are increasing dramatically worldwide because of translocations, restocking of organisms and habitat modifications; thus, determining whether hybridization is occuring after reintroducing extirpated congeneric species is commensurately important for conservation. Restocking programs are sometimes criticized because of the genetic consequences of hatchery-bred fish breeding with wild populations. These concerns are important to conservation restocking programs, including those from the Australian freshwater fish family, Percichthyidae. Two of the better known Australian Percichthyidae are the Murray Cod, Maccullochella peelii and Trout Cod, Maccullochella macquariensis which were formerly widespread over the Murray Darling Basin. In much of the Murrumbidgee River, Trout Cod and Murray Cod were sympatric until the late 1970s when Trout Cod were extirpated. Here we use genetic single nucleotide polymorphism (SNP) data together with mitochondrial sequences to examine hybridization and introgression between Murray Cod and Trout Cod in the upper Murrumbidgee River and consider implications for restocking programs. We have confirmed restocked riverine Trout Cod reproducing, but only as inter-specific matings, in the wild. We detected hybrid Trout Cod–Murray Cod in the Upper Murrumbidgee, recording the first hybrid larvae in the wild. Although hybrid larvae, juveniles and adults have been recorded in hatcheries and impoundments, and hybrid adults have been recorded in rivers previously, this is the first time fertile F1 have been recorded in a wild riverine population. The F1 backcrosses with Murray cod have also been found to be fertile. All backcrosses noted were with pure Murray Cod. Such introgression has not been recorded previously in these two species, and the imbalance in hybridization direction may have important implications for restocking programs. PMID:27812407

  10. Geologic structure between the Murray fracture zone and the Transverse Ranges

    USGS Publications Warehouse

    von, Huene R.

    1969-01-01

    The Murray fracture has been thought to extend ashore into the Transverse Ranges of California, but a geophysical study shows no evidence of structural continuity between these features. Instead, basement morphology typical of the Murray fracture zone ends where its known magnetic and bathymetric expression dies out. Similarly, east-west Transverse Range structures change direction so that they are parallel to the northwest trend of the coast rather than crossing the continental shelf and slope. The lack of continuity suggests an independent development of the Transverse Ranges since at least mid-Tertiary time along an older structural trend continuous with the Murray fracture zone. Possibly a fundamental lineament in the crust, an extension of the Murray, inactive since at least the mid-Tertiary, provided a convenient trend for development of the Transverse Ranges in response to deformation along the San Andreas fault system. The Murray fracture zone is thought by some authors to be a transform-fault. The transform-fault hypothesis alleviates some difficulties that arise in explaining the origin of the zone by transcurrent faulting but equivalent uncertainties seem to accompany the newer explanation. ?? 1969.

  11. Derivation of a salinity target for the Lower Murray Darling Valley.

    PubMed

    Maini, N; Buchan, A; Joseph, S

    2003-01-01

    The NSW Government commissioned catchment management boards (CMBs) to set the direction and process for catchment scale natural resource management. In the Lower Murray Darling, Rivers are highly regulated and water resources shared between three states. The Catchment Board only has jurisdiction over the northern bank of the Murray but salt and water enter the river from many locations upstream and along the area boundary. River salt and flow modelling has continually been improved to reflect and contribute to an increased understanding of salinity processes. The MDBC Salt Load study correlates 10 years of actual measured data with its modelled outputs, and estimates river salinities for 2020, 2050 and 2100. Routing models such as SALTFLO and MURKEY generate percentile salinity levels at different nodes in the River Murray downstream of the Lower Darling confluence. National, Murray-Darling Basin and NSW salinity management policy and legislative requirements were considered, MDBC model output was used to ensure the interim targets are achievable, auditable, and appropriate to the catchment. The method for an end-of-valley river based target for salinity is described. A target of less than 463 microS/cm for Lock 6, a point in the lower reaches of the Murray River is recommended for year 2010. Catchment management targets that express the main river salinity risk in five hydrologically distinct management zones are also recommended. Salinity management changes are needed in each zone to meet the end-of-valley target.

  12. A Missing Puzzle Piece in Murray's Law: the Optimal Angle of Junctions

    NASA Astrophysics Data System (ADS)

    Wang, Ruo-Qian; Taylor, Katherine; Winter, Amos G.; Global Engineering; Research Lab Team

    2014-11-01

    Branching flows are common in biological systems, such as the circulatory and respiratory systems of animals. The optimal radii of parent and daughter branches can be explained with Murray's law, which dictates that the sum of metabolic and pumping costs is minimized. Murray's Law can be used to determine the diameter of cascading channels but misses an important parameter: the angles of the branches. Past hydraulic studies have investigated the angle effect, but have not focused on whether this geometry follows Murray's Law; while a simple network optimization is able to show that at low Reynolds numbers a branch with a parent channel connecting to n equally distant channels obeying Murray's Law has a minimum total head loss with a branching angle θ, such that cos θ =n-2/3 , but it's not valid for high Reynolds number flows, which may experience separation and turbulence at the branches. The present study is focused on determining the optimal branch angle that complies with Murray's Law for moderate Reynolds numbers. Computational studies using Open FOAM and experiments using 3D printed branched channels will be presented. These results will be used to quantify the effect of Reynolds number on optimal branch geometry.

  13. An experimental streamflow reconstruction for the River Murray, Australia, 1783-1988

    NASA Astrophysics Data System (ADS)

    Gallant, Ailie J. E.; Gergis, JoëLle

    2011-12-01

    We present an experimental reconstruction of River Murray streamflow to assess present-day variations in the context of the past two centuries. Nine annually resolved paleoclimate proxy records from the Australasian region are used to develop a reconstruction of streamflow from 1783 to 1988. An ensemble of reconstructions is presented, providing probabilistic estimates of River Murray flows for each year back in time. The best-estimate reconstruction captures approximately 23% (50%) of annual (decadal) naturalized streamflow variability. High and low streamflow phases and their association with decadal climate variability in the Pacific are discussed. Reconstructed River Murray streamflow shows considerable variation since 1783. We estimate that there is a 2.3% chance that the 1998-2008 record low decadal streamflow deficit has been exceeded since European settlement. Stochastic simulations of the decadal variations in River Murray streamflow are computed using the paleostreamflow reconstruction to estimate model parameters. From these simulations, we estimate that the 1998-2008 streamflow deficit has an approximate 1 in 1500 year return period. As climate models are assessed relative to short instrumental records, future projections of decadal-scale variations in Murray-Darling Basin (MDB) streamflow may be inadequately represented. Given the immense socioeconomic importance of Australia's "food bowl," future paleoclimate and modeling efforts should be directed at understanding variability at this scale. This would greatly enhance our capacity to estimate regional sensitivity of the MDB's hydroclimate to further anthropogenic influences.

  14. Education for Personal Life: John MacMurray on Why Learning to Be Human Requires Emotional Discipline

    ERIC Educational Resources Information Center

    MacAllister, James

    2014-01-01

    In this article I discuss the philosophy of John MacMurray, and in particular, his little-examined writings on discipline and emotion education. It is argued that discipline is a vital element in the emotion education MacMurray thought central to learning to be human, because for him it takes concerted effort to overcome the human tendency toward…

  15. 76 FR 30152 - East Calloway County Middle School Mercury Spill Site, Murray, Calloway County, KY; Notice of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-24

    ... AGENCY East Calloway County Middle School Mercury Spill Site, Murray, Calloway County, KY; Notice of... response costs concerning the East Calloway County Middle School Mercury Spill Site located in Murray... Site name East Calloway County ] Middle School Mercury Spill Site by one of the following methods:...

  16. The Power of Context: The Portrait of Dido Elizabeth Belle Lindsay and Lady Elizabeth Murray

    ERIC Educational Resources Information Center

    Card, Jane

    2015-01-01

    Drawing on her wealth of experience and expertise in using visual sources in the classroom, in this article Jane Card explores how a single painting, a portrait of Dido Elizabeth Belle Lindsay and her cousin Lady Elizabeth Murray, might form the basis for a sequence of lessons. Arguing that although highly accessible, images are not…

  17. IQ and Stratification: An Empirical Evaluation of Herrnstein and Murray's Social Change Argument.

    ERIC Educational Resources Information Center

    Tittle, Charles R.; Rotolo, Thomas

    2000-01-01

    In "The Bell Curve," Herrnstein and Murray contend that intelligence has become increasingly important in social stratification, as society places a growing premium on cognitive skills. In contrast, analysis of interstate variation in the link between IQ and income shows that the link is stronger in states that use IQ-like examinations for…

  18. Utilizing Strategic Assessment to Support FYC Curricular Revision at Murray State University

    ERIC Educational Resources Information Center

    Walker, Paul; Myers, Elizabeth

    2011-01-01

    The first-year composition requirement at Murray State University was revised in 2008 from a 6-credit-hour, two-semester sequence to a 4-credit-hour, one-semester course. The revision overtly emphasizes critical reading, writing, and inquiry, while addressing the realities of the institution's resources for teaching first-year composition. This…

  19. 33 CFR 110.72c - Lake Murray, S.C.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... ANCHORAGE REGULATIONS Special Anchorage Areas § 110.72c Lake Murray, S.C. (a) The area beginning at the 125 foot pier of the Columbia Sailing Club, approximately latitude 34°03′51″ N., longitude 81°13′37″...

  20. 33 CFR 110.72c - Lake Murray, S.C.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... ANCHORAGE REGULATIONS Special Anchorage Areas § 110.72c Lake Murray, S.C. (a) The area beginning at the 125 foot pier of the Columbia Sailing Club, approximately latitude 34°03′51″ N., longitude 81°13′37″...

  1. Canoeing the Murray River (Australia) as Environmental Education: A Tale of Two Rivers

    ERIC Educational Resources Information Center

    Stewart, Alistair

    2004-01-01

    The Murray River, lying at the heart of Australia's largest catchment, is used extensively in outdoor education programs in south-eastern Australia. Since European settlement the river's ecological health has declined considerably due to activities such as damming for irrigation and clearing of native vegetation. Colonial notions of how the river…

  2. The Lower Murray River's Mannum Muds: A Holocene Age Lacustrine Deposit In A Bedrock Gorge

    NASA Astrophysics Data System (ADS)

    Hubble, T.; De Carli, E.; Clarke, S. L.; Penny, D.; Hamilton, R. J.; Petley, D. N.; Gadd, P.

    2014-12-01

    Middle to Late Holocene age, horizontally laminated clays and muds of lacustrine origin predominate the uppermost layers of the valley-fill sequence deposited in the lower Murray River's bedrock gorge upstream of the set of lakes which separate Australia's largest river system, The Murray-Darling, from its discharge point to the Southern Ocean. The top surface of the Coonambidgal Formation muds is developed at a constant elevation approximately coincident with the Holocene sea-level maximum and the mud deposit thins progressively in thickness upstream from ~30 m to ~10 m over a distance of 150 km due to a gradual, upstream rise in the elevation of the unit's base. Radiocarbon ages for wood and charcoal fragments recovered from two cores indicates the uppermost four to five metres of these muds were deposited after the mid-Holocene sea-level maximum, at below sea-level elevations indicating that the discharge of the Murray-Darling fluvial system was contained and effectively dammed by an obstruction developed downstream of Lake Alexandrina where the present-day river mouth is located. This feature is suspected to be the precursor of the present-day dune and beach-barrier system which occasionally blocks the river mouth and diverts fresh-water flow into the Coorong Wetlands. Muddy sediment from the entire Murray-Darling catchment was effectively trapped in the lower Murray Gorge palaeolake, herein named Lake Mannum, during the mid to late Holocene. High rates of sedimentation (one to two meters per thousand years) produced exquisitely fine-scaled (1 mm to 1 cm) laminations in the upper Coonambidgal Formation. This material has not been disturbed by bioturbation and presents a sediment record with the potential to yield a high-resolution record of the Murray-Darling catchment's discharge for much of the Holocene. The present-day lower Murray River channel currently presents a meandering but constant planform geometry upstream of Lake Alexandrina that developed as a

  3. Palaeogeographic, climatic and tectonic change in southeastern Australia: the Late Neogene evolution of the Murray Basin

    NASA Astrophysics Data System (ADS)

    McLaren, Sandra; Wallace, Malcolm W.; Gallagher, Stephen J.; Miranda, John A.; Holdgate, Guy R.; Gow, Laura J.; Snowball, Ian; Sandgren, Per

    2011-05-01

    The Murray Basin is a low-lying but extensive intracratonic depocentre in southeastern Australia, preserving an extraordinary record of Late Neogene sedimentation. New stratigraphic and sedimentologic data allow the long-term evolution of the basin to be re-evaluated and suggest a significant role for: (1) tectonism in controlling basin evolution, and (2) progressive and step-wise climatic change beginning in the early Pleistocene. Tectonic change is associated with regional uplift, occurring at approximately the same rate from the early Pliocene until the present day, and possibly associated with changing mantle circulation patterns or plate boundary processes. This uplift led to the defeat and re-routing of the Murray River, Australia's major continental drainage system. Key to our interpretation is recognition of timing relationships between four prominent palaeogeographic features - the Loxton-Parilla Sands strandplain, the Gambier coastal plain, palaeo megalake Bungunnia and the Kanawinka Escarpment. Geomorphic and stratigraphic evidence suggest that during the Early Pliocene the ancestral Murray River was located in western Victoria, flowing south along the Douglas Depression. Relatively small amounts of regional uplift (<200 m) defeated this drainage system, dramatically changing the palaeogeography of southeastern Australia and forming Plio-Pleistocene megalake Bungunnia. At its maximum extent Lake Bungunnia covered more than 50,000 km 2, making it one of the largest known palaeo- or modern-lakes in an intracontinental setting. Magnetostratigraphic constraints suggest lake formation c. 2.4 Ma. The formation of Lake Bungunnia influenced the Pliocene coastal dynamics, depriving the coastline of a sediment source and changing the coastal system from a prograding strandline system to an erosional one. Erosion during this period formed the Kanawinka Escarpment, a palaeo sea-cliff and one of the most prominent and laterally extensive geomorphic features in

  4. Anti-smoking environment: a perspective from Murray's psychogenic needs theory.

    PubMed

    Randheer, Kokku; Almotairi, Mohammad; Naeem, Haseebullah Abdul

    2013-10-27

    Smoking emerged as a social problem in many nations. Smoking is inflicting injuries to society including addiction, diseases, health damage, and loss of productivity. Individuals, institutions and governments are working to contain the menace of smoking. Many policies, programs and activities are being designed and implemented. To extend a helping hand to fight against smoking this study brought to light the amalgamation of Murray's psychogenic needs theory with anti-smoking activities to create an effective anti-smoking environment.  Conceptual methodology is adopted and five propositions were drafted. This study conclude that anti-smoking activities general education, campaigning, counseling, social welfare, and medical camps when moderated by Murray's psychogenic needs power, affiliation and achievement can create an effective anti-smoking environment further leading to quitting or reduction in the smoking.

  5. Comparative analysis of some essential amino acids and available lysine in Acacia colei and A. tumida seeds using chemical methods and an amino acid analyzer.

    PubMed

    Falade, Olumuyiwa S; Adewusi, Steve R A

    2013-01-01

    Methionine, cysteine, tryptophan, and available lysine were determined in Acacia colei and A. tumida seeds and some cereals using chemical methods, and the results were compared to those obtained using an amino acid analyzer. Ba(OH)2 hydrolysis gave the best result of the three methods of hydrolysis (acid, base, and enzyme) tried. Oxidized methionine, cysteine, and tryptophan were not detected, but S-carboxyethylcysteine was estimated as cysteine by the chemical methods, thus overestimating cysteine's content in Acacia seeds. Tryptophan and methionine were higher in cereals than in Acacia seeds, while the level of cysteine and available lysine was higher in Acacia seeds than in cereals. These results agreed with values obtained using the amino acid analyzer and could therefore be used in low budget laboratories.

  6. Evidence for interstellar SiC in the Murray carbonaceous meteorite

    NASA Technical Reports Server (NTRS)

    Bernatowicz, Thomas; Wopenka, Brigitte; Fraundorf, Gail; Ming, Tang; Anders, Edward

    1987-01-01

    Silicon carbide has been identified in two separates from the Murray carbonaceous chondrite that are enriched 20,000-fold in isotopically anomalous neon and xenon. The SiC is present in the form of crystalline grains 0.1-1 micron in size. Cubic and 111-plane-twinned cubic are the most common ordered polytypes observed so far. The anomalous isotopic composition of its carbon, nitrogen, and silicon indicates a presolar origin, probably in the atmospheres of red giants. An additional silicon- and oxygen-rich phase shows large isotropic anomalies in nitrogen and silicon, also associated with a presolar origin.

  7. Enhancing agrienvironmental outcomes: Market-based approaches to water in Australia's Murray-Darling Basin

    NASA Astrophysics Data System (ADS)

    Crase, Lin; O'Keefe, Sue; Kinoshita, Yukio

    2012-09-01

    This article provides the background to the water reform program in Australia's Murray-Darling Basin, with the aim of informing international policy practitioners. We focus specifically on the most recent efforts of government to redistribute water from agricultural users to an environmental water manager. The effectiveness of market-based approaches is assessed in this context, and generalized policy lessons are distilled. We conclude that water buybacks deliver positive outcomes, with farmers readily adapting to the opportunities afforded by this program. Accordingly, we conclude that agrienvironmental objectives can be enhanced by the use of market-based approaches of this form, at least in this context.

  8. The complete mitogenome of the Murray Cod, Maccullochella peelii (Mitchell, 1838) (Teleostei: Percichthyidae).

    PubMed

    Austin, Christopher M; Tan, Mun Hua; Lee, Yin Peng; Croft, Laurence J; Gan, Han Ming

    2016-01-01

    The complete mitochondrial genome of the iconic Australian freshwater fish, the Murray Cod, Maccullochella peelii, was recovered from partial genome sequencing data using the HiSeq platform (Illumina, San Diego, CA). The mitogenome consists of 16,442 bp (58% A + T content) containing 13 protein-coding genes, 2 ribosomal subunit genes, 22 transfer RNAs, and a 768 bp non-coding AT-rich region. This is the first mitogenome sequence for the genus Maccullochella, and the fourth for the family Percichthyidae.

  9. The socially just face of public health leadership Linda Rae Murray. Interview by Donya Lynn Currie.

    PubMed

    Murray, Linda Rae

    2011-02-01

    Linda Rae Murray, MD, MPH, a champion of social justice and outspoken advocate for the medically underserved for more than 40 years, is not easy to describe. Part E. F. Hutton (when she talks, people listen), part streetwise negotiator (she's not shy about dropping a four-letter word into conversation), she might come across as brash and intimidating to some. But those who know her well will attest to her softhearted interior, and her unwavering commitment to speaking out in the name of better health for all.

  10. John Murray / MABAHISS expedition versus the International Indian Ocean Expedition (IIOE) in retrospect

    NASA Astrophysics Data System (ADS)

    Aleem, A. A.; Morcos, S. A.

    In addition to its scientific achievements, the John Murray/Mabahiss Expedition was a unique experiment in technology transfer and it pioneered bilateral relations in the field of oceanography, at a time when the Law of the Sea was not even an embryonic concept. The Expedition will be remembered for its profound influence on the development of oceanography in Egypt, and subsequently in several Arab and African countries, as well as for its socio-economic impact in Egypt. The International Indian Ocean Expedition (IIOE) was an elaborate exercise involving both the most sophisticated developments in oceanography of the day and the full complexity of international relations which necessitated the scientific, coordinating and supporting mechanisms of SCOR, IOC and Unesco combined. Each exercise separated by 25 years represented a significant event in the development of oceanography. Each was a natural product of the prevailing state of the art and the international climate. Oceanography had made a quantum jump in technology in the intervening quarter of a century, which had put the cost of deep sea oceanography quite beyond the financial capabilities of many developing countries, an important factor to bear in mind when comparing the impact of the John Murray/Mabahiss Expedition on Egypt with that of the IIOE, on the Indian Ocean countries.

  11. Near surface water balance in the Northern Murray-Darling Basin.

    PubMed

    Vervoort, R W; Silburn, M; Kirby, M

    2003-01-01

    The water balance allows the calculation of deep drainage from other components of the hydrological cycle. Deep drainage has been linked to outbreaks of dryland and irrigated salinity. Until recently, deep drainage was not considered to be an issue on the alluvial plains of the Northern Murray-Darling Basin. Recent simulation studies and calculations using the water balance suggest that substantial deep drainage occurs under irrigated agriculture. However, these estimates have large uncertainties due to possible errors in measurement, calculation and due to spatial variability. On a catchment scale the relative area under a certain land use as well as the connection to local groundwater and the influence of anomalies such as prior streams needs to be considered. This paper discusses the current state of knowledge on the water balance in the Northern Murray-Darling Basin and highlights the need for a concentrated effort to measure all the components of the water balance in this area, as well as the effect on shallow groundwater quality and levels.

  12. Reviewing the adoption and impact of water markets in the Murray-Darling Basin, Australia

    NASA Astrophysics Data System (ADS)

    Wheeler, S.; Loch, A.; Zuo, A.; Bjornlund, H.

    2014-10-01

    Water markets have increasingly been adopted as a reallocation tool around the world as water scarcity intensifies. Water markets were first introduced in Australia in the 1980s, and water entitlement and allocation trade have been increasingly adopted by both private individuals and governments. As well as providing an overview of water policy in Australia since the 1900s, this paper examines the adoption of water trading in the southern Murray-Darling Basin of Australia (the largest hydrologically connected water market in Australia), and investigates the associated social, economic and environmental impacts that have arisen from the implementation of water markets. This study found that up to 86% of irrigators in one state in the southern Murray-Darling Basin had undertaken at least one water market trade by 2010-2011, hence, water market strategies are now a common tool employed by irrigators to assist their farm management. A variety of institutional, policy and informational changes are identified to increase the benefits from water markets in the future. There is no doubt that managing the impact of climate change and water scarcity are intertwined, suggesting that policy, institutional and governance responses should be similarly structured and coordinated.

  13. Diagnostic study of job design in oil industry: Fort McMurray, Alberta, Canada

    SciTech Connect

    Singh, M.

    1986-01-01

    The major purpose of this study was to diagnose the work situation of members of McMurray Independent Oil Workers (MIOW) Union, employed with Suncor, Inc., Fort McMurray and make recommendations for work improvements. Hackman and Oldham's Job Diagnostic Survey (JDS) and four scales of Leader Behavior Description Questionnaire Form XII were used to collect data from MIOW Union members with a sample size of 50% of the population. Ninety-eight usable questionnaires were received back by the investigator. The major concepts measured included job dimensions (skill variety, task identity, task significance, autonomy, feedback from job, feedback from agents, and dealing with others), affective outcomes (motivation, job satisfaction, and growth satisfaction), supervisory behaviors (initiating structure, consideration, production emphasis, persuasiveness) and demographic variables. Data were analyzed by using MINITAB and SPSSX statistical packages. Greater consideration and emotional support on the part of supervisors could increase affective outcomes and satisfaction with supervision and should result in greater organizational effectiveness. The overall pattern of quality of work life appeared to be production-oriented characterized by lack of supervisory considerations and less conducive for greater organizational performance.

  14. The Murray collection of pre-antibiotic era Enterobacteriacae: a unique research resource.

    PubMed

    Baker, Kate S; Burnett, Edward; McGregor, Hannah; Deheer-Graham, Ana; Boinett, Christine; Langridge, Gemma C; Wailan, Alexander M; Cain, Amy K; Thomson, Nicholas R; Russell, Julie E; Parkhill, Julian

    2015-01-01

    Studies of historical isolates inform on the evolution and emergence of important pathogens and phenotypes, including antimicrobial resistance. Crucial to studying antimicrobial resistance are isolates that predate the widespread clinical use of antimicrobials. The Murray collection of several hundred bacterial strains of pre-antibiotic era Enterobacteriaceae is an invaluable resource of historical strains from important pathogen groups. Studies performed on the Collection to date merely exemplify its potential, which will only be realised through the continued effort of many scientific groups. To enable that aim, we announce the public availability of the Murray collection through the National Collection of Type Cultures, and present associated metadata with whole genome sequence data for over half of the strains. Using this information we verify the metadata for the collection with regard to subgroup designations, equivalence groupings and plasmid content. We also present genomic analyses of population structure and determinants of mobilisable antimicrobial resistance to aid strain selection in future studies. This represents an invaluable public resource for the study of these important pathogen groups and the emergence and evolution of antimicrobial resistance. PMID:26411565

  15. Anthropogenic acceleration of sediment accretion in lowland floodplain wetlands, Murray-Darling Basin, Australia

    NASA Astrophysics Data System (ADS)

    Gell, Peter; Fluin, Jennie; Tibby, John; Hancock, Gary; Harrison, Jennifer; Zawadzki, Atun; Haynes, Deborah; Khanum, Syeda; Little, Fiona; Walsh, Brendan

    2009-07-01

    Over the last decade there has been a deliberate focus on the application of paleolimnological research to address issues of sediment flux and water quality change in the wetlands of the Murray-Darling Basin of Australia. This paper reports on the research outcomes on cores collected from sixteen wetlands along the Murrumbidgee-Murray River continuum. In all sixteen wetlands radiometric techniques and exotic pollen biomarkers were used to establish sedimentation rates from the collected cores. Fossil diatom assemblages were used to identify water source and quality changes to the wetlands. The sedimentation rates of all wetlands accelerated after European settlement, as little as two-fold, and as much as eighty times the mean rate through the Late Holocene. Some wetlands completely infilled through the Holocene, while others have rapidly progressed towards a terrestrial state due to accelerated accretion rates. Increasing wetland salinity and turbidity commenced within decades of settlement, contributing to sediment inputs. The sedimentation rate was observed to slow after river regulation in one wetland, but has accelerated recently in others. The complex history of flooding and drying, and wetland salinisation and eutrophication, influence the reliability of models used to establish recent, fine-resolution chronologies with confidence and the capacity to attribute causes to documented effects.

  16. Optimal dynamic water allocation: Irrigation extractions and environmental tradeoffs in the Murray River, Australia

    NASA Astrophysics Data System (ADS)

    Grafton, R. Quentin; Chu, Hoang Long; Stewardson, Michael; Kompas, Tom

    2011-12-01

    A key challenge in managing semiarid basins, such as in the Murray-Darling in Australia, is to balance the trade-offs between the net benefits of allocating water for irrigated agriculture, and other uses, versus the costs of reduced surface flows for the environment. Typically, water planners do not have the tools to optimally and dynamically allocate water among competing uses. We address this problem by developing a general stochastic, dynamic programming model with four state variables (the drought status, the current weather, weather correlation, and current storage) and two controls (environmental release and irrigation allocation) to optimally allocate water between extractions and in situ uses. The model is calibrated to Australia's Murray River that generates: (1) a robust qualitative result that "pulse" or artificial flood events are an optimal way to deliver environmental flows over and above conveyance of base flows; (2) from 2001 to 2009 a water reallocation that would have given less to irrigated agriculture and more to environmental flows would have generated between half a billion and over 3 billion U.S. dollars in overall economic benefits; and (3) water markets increase optimal environmental releases by reducing the losses associated with reduced water diversions.

  17. Foraminifera Diversity of Murray's Pool (western Bahrain) and their fight against Land Reclamation

    NASA Astrophysics Data System (ADS)

    Amao, Abduljamiu; Kaminski, Michael

    2015-04-01

    Coastal land in Bahrain is sharply declining due to rapid Urbanization and expansion of housing, transport and recreational facilities projects. Flourishing foraminiferal microhabits are stretched thin and foraminiferal space is at a premium. In this study, we survey a semi-enclosed lagoon that we named "Murray's Pool" because this is the same location as the one studied by Basson & Murray (1995), the only previous study of Foraminifera in western Bahrain. The site is now under threat by developers who are in the process of extending the seafront park on the south side of the town of Askar. The purpose of our study is to document the foraminiferal abundance and diversity across the lagoon before it disappears under a park. We identified five microhabitats, namely tidal channel, tidal flat, marsh, bacterial mat, and marsh back-pool environments. Faunal analysis from the five shallow-water subenvironments reveals a single diverse assemblage of benthic foraminifera. The most common species across all the microhabitats is Spirolina arietina. Species evenness, species richness, Shannon-Wiener diversity index, assemblage composition, and percentage abundances were determined for each subenvironment. The Shannon-Wiener Diversity Index and species evenness in the bacterial mat microhabitat is higher than at the other sites. The vegetated marsh microhabitat in general, has the proportions of individuals in the community distributed more equitably among the species. The tidal channel shows the highest total abundance, but has 5 fewer species compared with the marsh subenvironment.

  18. Identification of Presolar Spinel Grains from a Murray Residue by Multi-Detection Raster Imaging

    NASA Technical Reports Server (NTRS)

    Nguyen, A.; Zinner, E.; Lewis, R. S.

    2003-01-01

    Grain size separate CG from the Murray CM2 carbonaceous chondrite contains mostly spinel grains of average diameter 0.5 m. Zinner et al. found that approximately 1% of these spinel grains are of presolar origin as determined by their large O isotopic anomalies. These O isotopic measurements were made with the NanoSIMS on individual grains that were well separated from one another on a gold foil. The grains were selected for analysis from secondary electron and secondary O-16(-) images. The primary beam was then successively deflected onto these single grains for O isotopic analysis. While single grain analysis on dispersed samples is effective for finding relatively abundant anomalous grains, ion imaging in a raster mode on tightly packed grains might be more efficient for locating few anomalous grains among predominantly isotopically normal grains. In fact, this was the analysis mode used by Messenger et al. to discover presolar silicates in interplanetary dust particles. In an exploratory effort that is also geared toward establishing the optimum isotopic imaging technique in the search for presolar silicate grains in primitive meteorites, we measured O isotopic ratios in spinel grains from the Murray CG separate by raster imaging of areas with more or less tightly packed grains.

  19. Chemistry of the Materials Above and Below an Unconformity Between the Murray and Stimson Formations in Gale Crater, Mars

    NASA Astrophysics Data System (ADS)

    Newsom, H. E.; Belgacem, I.; Wiens, R. C.; Frydenvang, J.; Gasnault, O.; Maurice, S.; Gasda, P. J.; Clegg, S. M.; Cousin, A.; Rapin, W.; Jackson, R.; Vaci, Z.; Ha, B.; Blaney, D. L.; Bridges, N.; Francis, R.; Payré, V.; Gupta, S.; Banham, S.; Schroeder, J.; Calef, F. J., III; Edgett, K. S.; Fey, D.; Fisk, M. R.; Gellert, R.; Thompson, L. M.; Perrett, G. M.; Grotzinger, J. P.; Rubin, D. M.; Williams, A.; Kah, L. C.; Kronyak, R. E.

    2015-12-01

    MSL began investigating a contact between Murray formation, (fine grained lake deposits) and the younger Stimson formation at Marias Pass in May 2015, on the lower slopes of Mt. Sharp. Images show that the Murray formation, with numerous calcium sulfate veins compared to the Stimson, is truncated at an erosional contact. MAHLI images show a white layer a few mm thick at the contact that might be calcium sulfate. The lowermost beds of the Stimson unit in the Missoula area comprise horizontally laminated or cross-laminated sandstones. The sandstones are poorly sorted with floating granules and very coarse sand grains set in a fine- medium-grained sand 'matrix'. This material directly above the contact is a resistant, basal ledge-forming layer that also forms numerous blocks of float on top of the eroded Murray. This basal layer contains light toned fragments, possibly calcium sulfate, eroded from the Murray. The poor sorting and presence of sub-angular grains, together with the absence of preferential sorting into size sorted layers would seem to rule out eolian processes for the lowermost beds of the Stimson and suggest fluvial processes were responsible for deposition of these beds. For chemostratigraphy, the distance of each ChemCam or APXS observation above or below the contact was determined from images and the NavCam stereo mesh. The top of the Murray near the Missoula area is variable in composition, and additional analyses are planned to determine if weathering occurred at the eroded surface. Above the contact, the lowest 2 cm of the resistant slab is higher in SiO2, and lower in Al2O3, K2O and Na2O, relative to other Stimson analyses. In a few points with low totals, there is a correlation between Ca and missing components (presumed to be mostly S). These points could be connected to calcium sulfate in the form of cements and/or incorporation of eroded clasts of Murray vein materials.

  20. Link between deviations from Murray's Law and occurrence of low wall shear stress regions in the left coronary artery.

    PubMed

    Doutel, E; Pinto, S I S; Campos, J B L M; Miranda, J M

    2016-08-01

    Murray developed two laws for the geometry of bifurcations in the circulatory system. Based on the principle of energy minimization, Murray found restrictions for the relation between the diameters and also between the angles of the branches. It is known that bifurcations are prone to the development of atherosclerosis, in regions associated to low wall shear stresses (WSS) and high oscillatory shear index (OSI). These indicators (size of low WSS regions, size of high OSI regions and size of high helicity regions) were evaluated in this work. All of them were normalized by the size of the outflow branches. The relation between Murray's laws and the size of low WSS regions was analysed in detail. It was found that the main factor leading to large regions of low WSS is the so called expansion ratio, a relation between the cross section areas of the outflow branches and the cross section area of the main branch. Large regions of low WSS appear for high expansion ratios. Furthermore, the size of low WSS regions is independent of the ratio between the diameters of the outflow branches. Since the expansion ratio in bifurcations following Murray's law is kept in a small range (1 and 1.25), all of them have regions of low WSS with similar size. However, the expansion ratio is not small enough to completely prevent regions with low WSS values and, therefore, Murray's law does not lead to atherosclerosis minimization. A study on the effect of the angulation of the bifurcation suggests that the Murray's law for the angles does not minimize the size of low WSS regions.

  1. Banquet Speech at the Singapore Conference in Honour of Murray Gell-Mann on His 80th Birthday

    NASA Astrophysics Data System (ADS)

    Yang, Chen Ning

    2013-05-01

    It was about 60 years ago in 1951 that I first met in Princeton, at the Institute for Advanced Study, our Honoree tonight, Murray Gell-Mann. In the intervening 60 years, man's understanding of the fundamental structure of matter has made great historic advances. At this wonderful Conference, we have the opportunity to review some of these historic advances. It is a little like looking over an old album of memorable photographs in one's lifetime. In many of these photographs, Murray appears either in the foreground, or as the photographer snapping the picture. We know he is pleased with the album...

  2. Education, Place and Sustainability: A Literature Review and Overview of Curriculum and Policy in the States and the Territory of the Murray-Darling Basin

    ERIC Educational Resources Information Center

    Roberts, Philip; Downes, Natalie; Cook, Louise; Heiner, Irmgard; Caffery, Jo

    2014-01-01

    This report has been developed as part of the MDBfutures Collaborative Research Network project "Towards Place Based Education in the Murray-Darling Basin." The project explores the ways in which sustainability is understood in Murray Darling Basin (MDB) communities of Australia (including Indigenous, rural, small towns and regional…

  3. The Impact of Wildland and Structure Fire Smoke on Ambient Pollution Levels in Fort McMurray, Alberta, Canada

    EPA Science Inventory

    An unprecedented wildfire impacted the northern Alberta city of Fort McMurray in May 2016 causing a mandatory evacuation of all residents and resulted in the loss of over 2,400 homes and businesses. An estimated two hectare wildfire was first discovered on May 1 by a fire patrol...

  4. Inquiry, Evidence, and Excellence: The Promise and Practice of Quality Assurance. A Festschrift in Honor of Frank B. Murray

    ERIC Educational Resources Information Center

    LaCelle-Peterson, Mark, Ed.; Rigden, Diana, Ed.

    2012-01-01

    The overall aim of this volume of essays is to honor Frank B. Murray's commitments to empirically-based quality assurance and to the development of increasingly effective systems of quality control in educator preparation programs. As the editors approached the authors with the invitation to contribute an essay, two characteristic aspects of…

  5. Draft Genome Sequence of Streptococcus sp. X13SY08, Isolated from Murray Cod (Maccullochella peelii peelii).

    PubMed

    Liu, Yang; Zeng, Runying; Weng, Boqi; Luo, Tuyan; Luo, Qin; Xu, Liwen

    2016-01-01

    Streptococcus sp. X13SY08, isolated from freshwater Murray cod fish, likely presents a novel species of Streptococcus. Here, we present an annotated draft genome sequence of this species, which will improve our understanding of its physiology and pathogenesis.

  6. On the path integral representation of the Wigner function and the Barker-Murray ansatz

    NASA Astrophysics Data System (ADS)

    Sels, Dries; Brosens, Fons; Magnus, Wim

    2012-01-01

    The propagator of the Wigner function is constructed from the Wigner-Liouville equation as a phase space path integral over a new effective Lagrangian. In contrast to a paper by Barker and Murray (1983) [1], we show that the path integral can in general not be written as a linear superposition of classical phase space trajectories over a family of non-local forces. Instead, we adopt a saddle point expansion to show that the semiclassical Wigner function is a linear superposition of classical solutions for a different set of non-local time dependent forces. As shown by a simple example the specific form of the path integral makes the formulation ideal for Monte Carlo simulation.

  7. Groundwater salt accessions to land in the Queensland Murray-Darling Basin, Australia

    NASA Astrophysics Data System (ADS)

    Biggs, Andrew J. W.

    2011-05-01

    Salt accessions from artesian and sub-artesian bores have been calculated for the Queensland Murray-Darling Basin (QMDB), Australia, using available water chemistry, licensing data and a number of assumptions. The majority (~90%) of the salt accessions come from sub-artesian bores used for irrigation (including intensive livestock) purposes. Historically, free-flowing artesian bores in the west of the basin have contributed large quantities of salt, but their contributions have declined with capping and piping of these bores. The highest salt yields (t/km2) are in the Condamine catchment, which also contains 70% of the bores in the region. Groundwater salt accessions are considerably less than atmospheric (rainfall) accessions in all catchments except the Condamine. Further expansion of the coal seam gas industry may substantially increase non-cyclic groundwater accessions, further reducing catchment salt export/import ratios.

  8. Visual detection of murray valley encephalitis virus by reverse transcription loop-mediated isothermal amplification.

    PubMed

    Gong, Rui; Wang, Han Hua; Qin, Hong; Guo, Xiao Ping; Ma, Xue Jun

    2015-03-01

    A sensitive reverse transcription loop-mediated isothermal amplification (RT-LAMP) assay was developed for rapid visual detection of Murray valley encephalitis virus (MVEV) infection. The reaction was performed in one step in a single tube at 63 °C for 60 min with the addition of the hydroxynaphthol blue (HNB) dye prior to amplification. The detection limit of the RT-LAMP assay was 100 copies per reaction based on 10-fold dilutions of in vitro transcribed RNA derived from a synthetic MVEV DNA template. No cross-reaction was observed with other encephalitis-associated viruses. The assay was further evaluated using spiked cerebrospinal fluid sample with pseudotype virus containing the NS5 gene of MVEV. PMID:25800449

  9. Primary antibody responses of herons to experimental infection with Murray Valley encephalitis and Kunjin viruses.

    PubMed

    Boyle, D B; Marshall, I D; Dickerman, R W

    1983-12-01

    Antibody responses of rufous night herons (Nycticorax caledonicus) and little egrets (Egretta garzetta) following infection with Murray Valley encephalitis and Kunjin viruses were determined. Haemagglutinin-inhibiting antibodies were first detected on day 5 or 6 after inoculation and increased rapidly, reaching maximum titres of 320 to 2560 between 10 and 20 days after inoculation. Titres declined 20-320 between 60 and 120 days after inoculation, then tended to remain stationary. Titres were 2- to 8-fold higher to infecting virus than heterologous virus. Neutralizing antibody development paralleled that of HI antibodies with titres maintained at a higher level for longer periods; however, they did eventually decline to low levels. Following MVE virus infection IgM (19S), HI antibodies were 80-100% of HI antibodies detectable on day 6 or 7 after inoculation and declined rapidly, becoming undetectable by 20 days after inoculation. With Kunjin virus infections, IgM HI antibodies represented 90-100% of HI antibodies detectable on day 6 or 7 after inoculation. Significant levels of IgM HI antibodies were still detectable 20 days after inoculation (5-30% of total HI antibodies) and, in some birds, even at 27 days after inoculation (up to 10%), IgG (7S) HI antibodies were low or undetectable on day 6 or 7 after inoculation, then increased rapidly with rapidly rising HI antibody titres. The specificity of IgM and IgG antibodies and unfractionated sera was determined by testing against Murray Valley encephalitis, Kunjin, Japanese encephalitis and West Nile virus haemagglutinating antigens. It was possible to determine with which virus a bird had been infected from the pattern of cross-reaction with these antigens. These results should provide a rational basis for the interpretation of serological results from naturally infected birds.

  10. High concentrations of manganese and sulfur in deposits on Murray Ridge, Endeavour Crater, Mars

    USGS Publications Warehouse

    Arvidson, Raymond E.; Squyres, Steven W.; Morris, Richard V.; Knoll, Andrew H.; Gellert, Ralf; Clark, Benton C.; Catalano, Jeffrey G.; Jolliff, Bradley L.; McLennan, Scott M.; Herkenhoff, Kenneth E.; VanBommel, Scott; Mittelfehldt, David W.; Grotzinger, John P.; Guinness, Edward A.; Johnson, Jeffrey R.; Bell, James F.; Farrand, William H.; Stein, Nathan; Fox, Valerie K.; Golombek, Matthew P.; Hinkle, Margaret A. G.; Calvin, Wendy M.; de Souza, Paulo A.

    2016-01-01

    Mars Reconnaissance Orbiter HiRISE images and Opportunity rover observations of the ~22 km wide Noachian age Endeavour Crater on Mars show that the rim and surrounding terrains were densely fractured during the impact crater-forming event. Fractures have also propagated upward into the overlying Burns formation sandstones. Opportunity’s observations show that the western crater rim segment, called Murray Ridge, is composed of impact breccias with basaltic compositions, as well as occasional fracture-filling calcium sulfate veins. Cook Haven, a gentle depression on Murray Ridge, and the site where Opportunity spent its sixth winter, exposes highly fractured, recessive outcrops that have relatively high concentrations of S and Cl, consistent with modest aqueous alteration. Opportunity’s rover wheels serendipitously excavated and overturned several small rocks from a Cook Haven fracture zone. Extensive measurement campaigns were conducted on two of them: Pinnacle Island and Stuart Island. These rocks have the highest concentrations of Mn and S measured to date by Opportunity and occur as a relatively bright sulfate-rich coating on basaltic rock, capped by a thin deposit of one or more dark Mn oxide phases intermixed with sulfate minerals. We infer from these unique Pinnacle Island and Stuart Island rock measurements that subsurface precipitation of sulfate-dominated coatings was followed by an interval of partial dissolution and reaction with one or more strong oxidants (e.g., O2) to produce the Mn oxide mineral(s) intermixed with sulfate-rich salt coatings. In contrast to arid regions on Earth, where Mn oxides are widely incorporated into coatings on surface rocks, our results demonstrate that on Mars the most likely place to deposit and preserve Mn oxides was in fracture zones where migrating fluids intersected surface oxidants, forming precipitates shielded from subsequent physical erosion.

  11. High Arctic Temperature Variations During the Past Five Millennia: a Varve Based Record From Lower Murray Lake, Nunavut, Canada

    NASA Astrophysics Data System (ADS)

    Cook, T. L.; Bradley, R. S.; Stoner, J. S.; Francus, P.

    2008-12-01

    Sediments in Lower Murray Lake, northern Ellesmere Island, Nunavut Canada (81°21'N, 69°32'W) contain annual laminations (varves) which provide a record of sediment accumulation spanning the past 5000+ years. Annual mass accumulation rates in Lower Murray Lake were compared to instrumental climate data, long term records of climatic forcing mechanisms and other regional paleoclimate records which indicate that lake sedimentation is positively correlated with regional melt season temperatures driven by radiative forcing. Lower Murray Lake mass accumulation rates were positively correlated with mean July 600 m free air temperatures at the two nearest permanent weather stations at Alert and Eureka, producing r2 values of 0.61 and 0.50, respectively. Consequently, we suggest that sediment mass accumulation in Lower Murray Lake is dominantly influenced by July temperatures in the upper watershed which have a controlling influence on snowmelt, streamflow and sediment transport into the lake. The lowest rates of sediment accumulation and by inference the coldest periods of the record occurred around varve year 1800 AD and prior to ~4200 varve years ago. In contrast, periods of increased sedimentation, and by inference the warmest conditions, occurred in the 12th, 14th, and 20th centuries, and throughout the middle portion of the record, approximately 1000 to 4200 varve years ago. By calibrating the mass accumulation record in terms of July temperatures we were able to produce a quantitative estimate of the range of past temperature variations at Lower Murray Lake (standard error +/- 1.04 °C). The temperature reconstruction suggests: (1) recent temperatures are ~2.6 °C higher than temperature minima observed during the Little Ice Age, ca. 1800 AD, (2) maximum temperatures during the past 5200 years exceeded modern values by ~0.6 °C, (3) minimum temperatures observed approximately 4900 varve years before present were ~3.5 °C colder than recent conditions.

  12. Groundwater flow and solute transport at the Mourquong saline-water disposal basin, Murray Basin, southeastern Australia

    NASA Astrophysics Data System (ADS)

    Simmons, Craig; Narayan, Kumar; Woods, Juliette; Herczeg, Andrew

    2002-03-01

    Saline groundwater and drainage effluent from irrigation are commonly stored in some 200 natural and artificial saline-water disposal basins throughout the Murray-Darling Basin of Australia. Their impact on underlying aquifers and the River Murray, one of Australia's major water supplies, is of serious concern. In one such scheme, saline groundwater is pumped into Lake Mourquong, a natural groundwater discharge complex. The disposal basin is hydrodynamically restricted by low-permeability lacustrine clays, but there are vulnerable areas in the southeast where the clay is apparently missing. The extent of vertical and lateral leakage of basin brines and the processes controlling their migration are examined using (1) analyses of chloride and stable isotopes of water (2H/1H and 18O/16O) to infer mixing between regional groundwater and lake water, and (2) the variable-density groundwater flow and solute-transport code SUTRA. Hydrochemical results indicate that evaporated disposal water has moved at least 100 m in an easterly direction and that there is negligible movement of brines in a southerly direction towards the River Murray. The model is used to consider various management scenarios. Salt-load movement to the River Murray was highest in a "worst-case" scenario with irrigation employed between the basin and the River Murray. Present-day operating conditions lead to little, if any, direct movement of brine from the basin into the river. Résumé. Les eaux souterraines salées et les effluents de drainage de l'irrigation sont stockés dans environ 200 bassins naturels ou artificiels destinés à retenir les eaux salines dans tout le bassin de Murray-Darling, en Australie. Leur impact sur les aquifères sous-jacents et sur la rivière Murray, l'une des principales ressources en eau d'Australie, constitue un problème grave. Dans une telle situation, les eaux souterraines salines sont pompées dans le lac Mourquong, complexe dans lequel les nappes se d

  13. Primary viraemia responses of herons to experimental infection with Murray Valley encephalitis, Kunjin and Japanese encephalitis viruses.

    PubMed

    Boyle, D B; Dickerman, R W; Marshall, I D

    1983-12-01

    Rufous night herons, Pacific herons, little egrets and intermediate egrets were experimentally infected with Murray Valley encephalitis, Kunjin or Japanese encephalitis viruses. Viraemias of at least one day's duration were detected in all birds except two intermediate egrets inoculated with a very low dose of Kunjin virus and one rufous night heron inoculated with Japanese encephalitis virus. there was usually a viraemia of 3 to 5 days' duration commencing on the first or second day and continuing until day 5 or 6 and rarely until day 7. Maximum titres tended to be higher in young birds, up to 2-5 months of age (10(4)-10(5) mouse LD50/ml), than in older birds more than 8 months of age (10(3)-10(4) mouse LD50/ml). Significant differences in maximum viraemia titres were not observed in the different species or between Murray Valley encephalitis and Kunjin viruses. Japanese encephalitis viraemias were significantly lower, but this was probably due to the high mouse brain passage level of the strain used. The onset of viraemia was earlier in intermediate egrets than in rufous night herons inoculated with similar doses of Murray Valley encephalitis virus, but no difference in the susceptibility to infection was observed. With Kunjin virus there was a significant difference in the susceptibility of intermediate egrets and rufous night herons, with rufous night herons being more susceptible to infection with low doses of virus. This difference in threshold of infection, if it extends to other species with both Kunjin and Murray Valley encephalitis viruses, may, in part, be an explanation for the greater incidence of natural infections observed in rufous night herons compared with other species and orders of water birds.

  14. Effects of starvation and water quality on the purging process of farmed Murray cod (Maccullochella peelii peelii).

    PubMed

    Palmeri, Giorgio; Turchini, Giovanni M; Keast, Russell; Marriott, Philip J; Morrison, Paul; De Silva, Sena S

    2008-10-01

    The aim of this study was to determine the effects of starvation and water quality during the purging process on the biometric parameters, fatty acids, and flavor volatiles of Murray cod farmed in a recirculation system. Market size Murray cod, at the end of the grow-out stage, were divided into eight treatments. The treatments were either fed/starved (F or S) and kept in clean water (CW: CWF2, CWS2, CWF4, and CWS4) or fed/starved and kept in recycled water (RW: RWF2, RWS2, RWF4, and RWS4) for either 2 or 4 weeks. Fish were sampled at 0, 2, and 4 week intervals. Food deprivation was responsible for a significant (P < 0.05) weight loss compared to that of fed treatments. The same was observed for the condition factor (K), hepatosomatic index (HSI), and dress-out percentage (DP). No significant changes were, however, observed in the visceral fat index (VFI). Saturated fatty acids (SFA) were highest in RWF4 and lowest in CWS4 (P < 0.05), while monounsaturated fatty acids (MUFA) were lowest in CWF4 (P < 0.05). Starvation did not affect the flavor volatile compounds, which were mainly affected by changes in water quality. Specifically, total aldehyde (% w/w) content was significantly (P < 0.05) affected by water quality, but the time of purging was not responsible for any noteworthy differences. This study was able to separate the effects of starvation and water quality, in the purging process, on the final eating quality of farmed market size Murray cod. It is concluded that because of the inevitable weight loss during starvation, Murray cod should be fed during the purging stage but kept in clean water and deprived of food only for the time necessary to empty the gastro-intestinal tract. PMID:18783236

  15. The economics of time delayed salinity impact management in the River Murray

    NASA Astrophysics Data System (ADS)

    Connor, Jeff

    2008-03-01

    Drainage from irrigation along the River Murray causes rising levels of saline discharge to the river and floodplains with adverse impacts including crop, water infrastructure and floodplain ecological health damage. These salinity impacts of drainage are time delayed by up to several decades. Investment in engineering infrastructure to pump saline water away from the river to evaporation basins has been a significant feature of public policy to address the issue. This article evaluates the costs and benefits of further engineering investments to offset expected future salinity growth. The analysis involves an integer programming optimization model that explicitly accounts for salinity impact time delays in benefit, cost accounting considering a long term, 100 year time horizon. A lower bound salinity growth scenario is evaluated involving increasingly efficient irrigation and further new irrigation development at locations where salinity impacts are comparatively small. This is compared to an upper bound salinity growth scenario with static irrigation efficiency and new irrigation development in high salinity impact areas. It is concluded that if conditions leading to the upper bound salinity growth scenario can not be avoided in the near term, the marginal costs of offsetting future salinity growth with additional engineering investment will exceed the marginal benefits several decades hence.

  16. Framboidal iron oxide: Chondrite-like material from the black mat, Murray Springs, Arizona

    SciTech Connect

    Fayek, Mostafa; Hull, Sharon; Anovitz, Lawrence {Larry} M; HaynesJr., C. Vance; Bergen, Laura

    2012-01-01

    At the end of the Pleistocene, many large mammals became extinct in North America1. The three most common theories for this phenomenon include climate change, overkill, or disease. Recently, researchers suggested that an extraterrestrial (ET) event may have caused sudden climate change that devastated these large mammals and had profound effects on the Clovis culture2,3. Critics of the ET event or impact theory note the lack of evidence such as an impact crater, impact material, shocked quartz, or tektites4. Here we present for the first time chemical and textural evidence of impact material from the Clovis-age, Murray Springs black mat layer, Arizona, USA. The impact material contains iron oxide spherules (framboids) in a glassy iron-silica matrix, which is one indicator of a possible meteorite impact. The spherules also contain elevated concentrations of vanadium and little titanium. The chemistry of both the spherules and matrix is consistent with the chemistry of impact material associated with other meteorite impact sites and meteorite showers.

  17. Framboidal iron oxide: Chondrite-like material from the black mat, Murray Springs, Arizona

    SciTech Connect

    Fayek, Mostafa; Anovitz, Lawrence {Larry} M; Allard Jr, Lawrence Frederick; Hull, Sharon

    2011-01-01

    At the end of the Pleistocene a Younger Dryas black mat was deposited on top of the Pleistocene sediments inmany parts of North America. A study of themagnetic fraction ({approx}10,900 50 B.P.) fromthe basal section of the black mat at Murray Springs, AZ revealed the presence of amorphous iron oxide framboids in a glassy iron-silica matrix. These framboids are very similar in appearance and chemistry to those reported from several types of carbonaceous chondrites. The glass contains iron, silicon, oxygen, vanadium and minor titanium, while the framboidal particles contain calcium as well. The major element chemistry of both the spherules and the glass matrix are consistent with the chemistry of material associated with meteorite impact sites and meteorites. Electron microscopy confirms that the glassy material is indeed amorphous, and also shows that what appear to be individual oxide particles are amorphous as well. The latter appears consistent with their overall morphology that, while euhedral, typically shows significant fracture. Based on these data, we argue that these particles are the product of a hypervelocity impact.

  18. Framboidal iron oxide: Chondrite-like material from the black mat, Murray Springs, Arizona

    NASA Astrophysics Data System (ADS)

    Fayek, Mostafa; Anovitz, Lawrence M.; Allard, Lawrence F.; Hull, Sharon

    2012-02-01

    At the end of the Pleistocene a Younger Dryas "black mat" was deposited on top of the Pleistocene sediments in many parts of North America. A study of the magnetic fraction (~ 10,900 ± 50 B.P.) from the basal section of the black mat at Murray Springs, AZ revealed the presence of amorphous iron oxide framboids in a glassy iron-silica matrix. These framboids are very similar in appearance and chemistry to those reported from several types of carbonaceous chondrites. The glass contains iron, silicon, oxygen, vanadium and minor titanium, while the framboidal particles contain calcium as well. The major element chemistry of both the spherules and the glass matrix are consistent with the chemistry of material associated with meteorite impact sites and meteorites. Electron microscopy confirms that the glassy material is indeed amorphous, and also shows that what appear to be individual oxide particles are amorphous as well. The latter appears consistent with their overall morphology that, while euhedral, typically shows significant fracture. Based on these data, we argue that these particles are the product of a hypervelocity impact.

  19. Framboidal iron oxide: Chondrite-like material from the black mat, Murray Springs, Arizona

    SciTech Connect

    Fayek, Mostafa; Anovitz, Lawrence {Larry} M; Allard Jr, Lawrence Frederick; Hull, Sharon

    2012-01-01

    At the end of the Pleistocene a Younger Dryas black mat was deposited on top of the Pleistocene sediments in many parts of North America. A study of the magnetic fraction (~10,900 50 B.P.) from the basal section of the black mat at Murray Springs, AZ revealed the presence of amorphous iron xide framboids in a glassy iron-silica matrix. These framboids are very similar in appearance and chemistry to those reported from several types of carbonaceous chondrites. The glass contains iron, silicon, oxygen, vanadium and minor titanium, while the framboidal particles contain calcium as well. The major element chemistry of both the spherules and the glass matrix are consistent with the chemistry of material associated with meteorite impact sites and meteorites. Electron microscopy confirms that the glassy material is indeed amorphous, and also shows that what appear to be individual oxide particles are amorphous as well. The latter appears consistent with their overall morphology that, while euhedral, typically shows significant fracture. Based on these data, we argue that these particles are the product of a hypervelocity impact.

  20. Risk management frameworks: supporting the next generation of Murray-Darling Basin water sharing plans

    NASA Astrophysics Data System (ADS)

    Podger, G. M.; Cuddy, S. M.; Peeters, L.; Smith, T.; Bark, R. H.; Black, D. C.; Wallbrink, P.

    2014-09-01

    Water jurisdictions in Australia are required to prepare and implement water resource plans. In developing these plans the common goal is realising the best possible use of the water resources - maximising outcomes while minimising negative impacts. This requires managing the risks associated with assessing and balancing cultural, industrial, agricultural, social and environmental demands for water within a competitive and resource-limited environment. Recognising this, conformance to international risk management principles (ISO 31000:2009) have been embedded within the Murray-Darling Basin Plan. Yet, to date, there has been little strategic investment by water jurisdictions in bridging the gap between principle and practice. The ISO 31000 principles and the risk management framework that embodies them align well with an adaptive management paradigm within which to conduct water resource planning. They also provide an integrative framework for the development of workflows that link risk analysis with risk evaluation and mitigation (adaptation) scenarios, providing a transparent, repeatable and robust platform. This study, through a demonstration use case and a series of workflows, demonstrates to policy makers how these principles can be used to support the development of the next generation of water sharing plans in 2019. The workflows consider the uncertainty associated with climate and flow inputs, and model parameters on irrigation and hydropower production, meeting environmental flow objectives and recreational use of the water resource. The results provide insights to the risks associated with meeting a range of different objectives.

  1. Water planning and hydro-climatic change in the Murray-Darling Basin, Australia.

    PubMed

    Grafton, R Quentin; Pittock, Jamie; Williams, John; Jiang, Qiang; Possingham, Hugh; Quiggin, John

    2014-12-01

    More than a third of humanity lives in regions with less than 1 million liters of fresh water per person per year. Population growth will increase water demand while climate change in arid and semi-arid areas may reduce water availability. The Murray-Darling Basin in Australia is a region where water reform and planning have been used to reduce consumptive extraction to better sustain river ecosystems under climate variability. Using actual data and previously published models that account for climate variability and climate change, the trade-off between water extractions and water essential to the long-term ecological function of river systems is analysed. The findings indicate that better water planning and a more complete understanding of the effects of irrigation on regional climate evapotranspiration could: (1) increase the overall benefits of consumptive and non-consumptive water use; (2) improve riparian environments under climate variability; and (3) be achieved with only small effects on the profits and gross value of food and fiber production.

  2. Preliminary Results of the Investigation of the Carbonaceous Chondrites Nagoya, Allende, and Murray

    NASA Technical Reports Server (NTRS)

    Rozanov, Alexei Yu.; Hoover, Richard B.; Rose, M. Franklin (Technical Monitor)

    2000-01-01

    As part of a long-term study of morphological biomarkers in Astromaterials, we are documenting a variety of features considered to be indigenous to ancient terrestrial rocks and carbonaceous meteorites. In preparation for the study of samples returned from Mars and other bodies of our Solar System, it is imperative that we establish a database of the nature and morphology of known bacterial fossils in Earth rocks and biomorphic microstructures which may represent microfossils in meteorites. The process of fossilization or mineralization can cause major changes in morphologies and textures of the original organisms and the study of fossilized terrestrial organisms can help provide insight into the interpretation of mineral biomarkers and abiotic microstructures which may mimic certain aspects of microfossils. One class of biomarkers consists of biominerals which have either been precipitated directly by microorganisms, or whose precipitation has been influenced by the organisms. Such microbe-mediated mineral formation may include important clues to the size, shape, and environment of the microorganisms. This paper describes the detection of possible microbe-mediated minerals, biomorphic microstructures and possible microfossils in the Nagoya, Allende, and Murray Carbonaceous Chondrites.

  3. Occurrence, diversity and pattern of damage of Oplostomus species (Coleoptera: Scarabaeidae), honey bee pests in Kenya

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Several arthropod pests including the hive beetles Aethina tumida and Oplostomus haroldi and the ectoparasite Varroa destructor have recently been identified as associated with honey bee colonies in Kenya. Here, we report the first documentation of O. fuligineus in Kenya, a related scarab of O. haro...

  4. Small hive beetles, honeybees, yeast and plants: evolution of an insect pest

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The Small hive beetle, Aethina tumida, is seemingly an anomaly among Nitidulids because it thrives in honeybee hives feeding on pollen and bee brood. Attraction to bee hives is mediated by the Honeybee alarm pheromone. We have discovered that when feeding on pollen resources in bee hives the beetl...

  5. Reviewing colony losses and Colony Collapse Disorder in the United States

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The beekeeping industry in the United States has faced a number of obstacles to healthy bee management in recent decades. These obstacles range from arthropod pests such as tracheal mites (Acrapis woodi), varroa mites (Varroa destructor), and small hive beetles (Aethina tumida) to pathogenic disease...

  6. Current status of small hive beetle infestation in the Philippines

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The distribution of the small hive beetle (SHB, Aethina tumida) is rapidly expanding. From sub-Saharan Africa where it is considered indigenous, SHB has successfully invaded other continents, is prevalent in Australia and North America, and has recently been introduced into Europe (summarized by FE...

  7. Dry spell trend analysis in Kenya and the Murray Darling Basin using daily rainfall

    NASA Astrophysics Data System (ADS)

    Muita, R. R.; van Ogtrop, F. F.; Vervoort, R. W.

    2012-04-01

    Important agricultural areas in Kenya and the Murray Darling Basin (MDB) in Australia are largely semi-arid to arid. Persistent dry periods and timing of dry spells directly impact the availability of soil moisture and hence crop production in these regions. Most studies focus on the analysis of dry spell lengths at an annual scale. However, timing and length of dry spells at finer temporal scales is more beneficial for cropping when considering a trade-off between the time scale and the ability to analyse dry spell length. The aim of this study was to analyse the interannual and intra annual variations in dry spell lengths in the regions to inform crop management. This study analysed monthly dry spells based on daily rainfall for 1961-2010 on a limited dataset of 13 locations in Kenya and 17 locations in the MDB. This dataset was the most consistent across both regions and future analysis will incorporate more stations and longer time periods where available. Dry spell lengths were analysed by month and year and trends in monthly and annual dry spell lengths were analysed using Generalised Linear Models (GLM) and the Mann Kendall test (MK). Overall, monthly dryspell lengths are right skewed with higher frequency of shorter dryspells (3-25 days). In Kenya, significant increases in mean dry spell lengths (p≤0.02) are observed in inland arid-to semi humid locations but this temporal trend appears to decrease in highland and the coastal regions. Analysis of the MDB stations suggests changes in seasonality. For example, spatial trends suggest a North-South increase in dry spell length in summer (December - February), but a shortening after February. Generally, the GLM and MK results are similar in the two regions but the MK test tends to give higher values of positive slope coefficients and lower values for negative coefficients compared to GLM. This may limit the ability of finding the best estimates for model coefficients. Previous studies in Australia and Kenya

  8. AUTOMATED NanoSIMS MEASUREMENTS OF SPINEL STARDUST FROM THE MURRAY METEORITE

    SciTech Connect

    Gyngard, Frank; Zinner, Ernst; Stadermann, Frank J.; Hynes, K. Mairin; Nittler, Larry R.; Morgand, Alain

    2010-07-01

    We report new O isotopic data on 41 presolar oxide grains, 38 MgAl{sub 2}O{sub 4} (spinel) and 3 Al{sub 2}O{sub 3} from the CM2 meteorite Murray, identified with a recently developed automated measurement system for NanoSIMS. We have also obtained Mg-Al isotopic results on 29 of the same grains (26 spinel and 3 Al{sub 2}O{sub 3}). The majority of the grains have O isotopic compositions typical of most presolar oxides, fall well into the four previously defined groups, and are most likely condensates from either red giant branch or asymptotic giant branch stars. We have also discovered several grains with more unusual O and Mg compositions suggesting formation in extreme astrophysical environments, such as novae and supernovae (SNe). One of these grains has massive enrichments in {sup 17}O, {sup 25}Mg, and {sup 26}Mg, which are isotopic signatures indicative of condensation from nova ejecta. Two grains of SN origin were also discovered: one has a large {sup 18}O/{sup 16}O ratio typical of Group 4 presolar oxides; another grain is substantially enriched in {sup 16}O, and also contains radiogenic {sup 44}Ca from the decay of {sup 44}Ti, a likely condensate from material originating in the O-rich inner zones of a Type II SN. In addition, several Group 2 presolar spinel grains also have large {sup 25}Mg and {sup 26}Mg isotopic anomalies that are difficult to explain by standard nucleosynthesis in low-mass stars. Auger elemental spectral analyses were performed on the grains and qualitatively suggest that presolar spinel may not have higher-than-stoichiometric Al/Mg ratios, in contrast to SIMS results obtained here and reported previously.

  9. Spatial differentiation of landscape values in the Murray River region of Victoria, Australia.

    PubMed

    Zhu, Xuan; Pfueller, Sharron; Whitelaw, Paul; Winter, Caroline

    2010-05-01

    This research advances the understanding of the location of perceived landscape values through a statistically based approach to spatial analysis of value densities. Survey data were obtained from a sample of people living in and using the Murray River region, Australia, where declining environmental quality prompted a reevaluation of its conservation status. When densities of 12 perceived landscape values were mapped using geographic information systems (GIS), valued places clustered along the entire river bank and in associated National/State Parks and reserves. While simple density mapping revealed high value densities in various locations, it did not indicate what density of a landscape value could be regarded as a statistically significant hotspot or distinguish whether overlapping areas of high density for different values indicate identical or adjacent locations. A spatial statistic Getis-Ord Gi* was used to indicate statistically significant spatial clusters of high value densities or "hotspots". Of 251 hotspots, 40% were for single non-use values, primarily spiritual, therapeutic or intrinsic. Four hotspots had 11 landscape values. Two, lacking economic value, were located in ecologically important river red gum forests and two, lacking wilderness value, were near the major towns of Echuca-Moama and Albury-Wodonga. Hotspots for eight values showed statistically significant associations with another value. There were high associations between learning and heritage values while economic and biological diversity values showed moderate associations with several other direct and indirect use values. This approach may improve confidence in the interpretation of spatial analysis of landscape values by enhancing understanding of value relationships.

  10. Spatial Differentiation of Landscape Values in the Murray River Region of Victoria, Australia

    NASA Astrophysics Data System (ADS)

    Zhu, Xuan; Pfueller, Sharron; Whitelaw, Paul; Winter, Caroline

    2010-05-01

    This research advances the understanding of the location of perceived landscape values through a statistically based approach to spatial analysis of value densities. Survey data were obtained from a sample of people living in and using the Murray River region, Australia, where declining environmental quality prompted a reevaluation of its conservation status. When densities of 12 perceived landscape values were mapped using geographic information systems (GIS), valued places clustered along the entire river bank and in associated National/State Parks and reserves. While simple density mapping revealed high value densities in various locations, it did not indicate what density of a landscape value could be regarded as a statistically significant hotspot or distinguish whether overlapping areas of high density for different values indicate identical or adjacent locations. A spatial statistic Getis-Ord Gi* was used to indicate statistically significant spatial clusters of high value densities or “hotspots”. Of 251 hotspots, 40% were for single non-use values, primarily spiritual, therapeutic or intrinsic. Four hotspots had 11 landscape values. Two, lacking economic value, were located in ecologically important river red gum forests and two, lacking wilderness value, were near the major towns of Echuca-Moama and Albury-Wodonga. Hotspots for eight values showed statistically significant associations with another value. There were high associations between learning and heritage values while economic and biological diversity values showed moderate associations with several other direct and indirect use values. This approach may improve confidence in the interpretation of spatial analysis of landscape values by enhancing understanding of value relationships.

  11. Late Diagenetic Cements in the Murray Formation, Gale Crater, Mars: Implications for Postdepositional Fluid Flow

    NASA Astrophysics Data System (ADS)

    Kah, L. C.; Kronyak, R. E.; Van Beek, J.; Nachon, M.; Mangold, N.; Thompson, L. M.; Wiens, R. C.; Grotzinger, J. P.; Schieber, J.

    2015-12-01

    The Murray formation in its type section at Pahrump Hills, consists of approximately 14 meters of recessive-weathering mudstone interbedded with decimeter-scale cross-bedded sandstone in the upper portions of the exposed section. Mudstone textures vary from massive, to poorly laminated, to well laminated. Unusual 3-dimensional crystal clusters and dendrites occur in the lowermost part of the section and are erosionally resistant with respect to the host rock. Crystal clusters consist of elongate lathes that occur within individual blocks of the fractured substrate. Individual lathes show tabular morphologies with a pseudo-rectangular cross-section and the three dimensional morphology of the crystal clusters cross-cut host rock lamination with little or no deformation. Dendritic structures are typically larger and show predominantly planar growth aligned with bedding planes. Individual lathes within the dendrites are elongate and pseudo-rectangular in cross-section. Unlike crystal clusters, dendritic morphologies appear to nucleate at bedrock fractures and near mineralized veins. Here we show evidence that crystal clusters and dendrites are post-depositional, potentially burial diagenetic features. Association of features with through-going fractures suggests that fractures may have been a primary transport pathway for ions responsible for dendrite growth. Even where dendrites do not occur, enhanced cementation suggests that fluids permeated the rock matrix. We suggest that growth of clusters proceeded as inter-particle crystal growth, wherein mineral growth within inter-particle spaces resulted in cementation and porosity loss, with little further effect on the rock matrix. Crystal clusters and dendrites are most likely to form when mineral saturation states are highest, for instance with initial intrusion of fracture-borne fluids and mixing with ambient pore fluids, and thus emphasize the importance of fractures in ion transport during late diagenesis.

  12. Spatial differentiation of landscape values in the Murray River region of Victoria, Australia.

    PubMed

    Zhu, Xuan; Pfueller, Sharron; Whitelaw, Paul; Winter, Caroline

    2010-05-01

    This research advances the understanding of the location of perceived landscape values through a statistically based approach to spatial analysis of value densities. Survey data were obtained from a sample of people living in and using the Murray River region, Australia, where declining environmental quality prompted a reevaluation of its conservation status. When densities of 12 perceived landscape values were mapped using geographic information systems (GIS), valued places clustered along the entire river bank and in associated National/State Parks and reserves. While simple density mapping revealed high value densities in various locations, it did not indicate what density of a landscape value could be regarded as a statistically significant hotspot or distinguish whether overlapping areas of high density for different values indicate identical or adjacent locations. A spatial statistic Getis-Ord Gi* was used to indicate statistically significant spatial clusters of high value densities or "hotspots". Of 251 hotspots, 40% were for single non-use values, primarily spiritual, therapeutic or intrinsic. Four hotspots had 11 landscape values. Two, lacking economic value, were located in ecologically important river red gum forests and two, lacking wilderness value, were near the major towns of Echuca-Moama and Albury-Wodonga. Hotspots for eight values showed statistically significant associations with another value. There were high associations between learning and heritage values while economic and biological diversity values showed moderate associations with several other direct and indirect use values. This approach may improve confidence in the interpretation of spatial analysis of landscape values by enhancing understanding of value relationships. PMID:20300936

  13. Differential ligand selectivity of androgen receptors α and β from Murray-Darling rainbowfish (Melanotaenia fluviatilis).

    PubMed

    Bain, Peter A; Ogino, Yukiko; Miyagawa, Shinichi; Iguchi, Taisen; Kumar, Anupama

    2015-02-01

    Androgen receptors (ARs) mediate the physiological effects of androgens in vertebrates. In fishes, AR-mediated pathways can be modulated by aquatic contaminants, resulting in the masculinisation of female fish or diminished secondary sex characteristics in males. The Murray-Darling rainbowfish (Melanotaenia fluviatilis) is a small-bodied freshwater teleost used in Australia as a test species for environmental toxicology research. We determined concentration-response profiles for selected agonists and antagonists of rainbowfish ARα and ARβ using transient transactivation assays. For both ARα and ARβ, the order of potency of natural agonists was 11-ketotestosterone (11-KT)>5α-dihydrotestosterone>testosterone>androstenedione. Methyltestosterone was a highly potent agonist of both receptors relative to 11-KT. The relative potency of the veterinary growth-promoting androgen, 17β-trenbolone, varied by more than a factor of 5 between ARα and ARβ. The non-steroidal anti-androgen bicalutamide exhibited high inhibitory potency relative to the structurally related model anti-androgen, flutamide. The inhibitory potency of the agricultural fungicide, vinclozolin, was approximately 1.7-fold relative to flutamide for ARα, but over 20-fold in the case of ARβ. Fluorescent protein tagging of ARs showed that the rainbowfish ARα subtype is constitutively localised to the nucleus, while ARβ is cytoplasmic in the absence of ligand, an observation which agrees with the reported subcellular localisation of AR subtypes from other teleost species. Collectively, these data suggest that M. fluviatilis ARα and ARβ respond differently to environmental AR modulators and that in vivo sensitivity to contaminants may depend on the tissue distribution of the AR subtypes at the time of exposure. PMID:25644213

  14. The doctor and the rebels--the diary of Charles Molteno Murray, recorded during the 1914 Boer rebellion.

    PubMed

    Murray, R

    2000-12-01

    Just 12 years after the conclusion of the Anglo-Boer war, South Africa was led by ex-Boer Generals Botha and Smuts into what was to become the Great War, on the side of the British. This was utterly unacceptable to thousands of Boers who had engaged in a bitter struggle, against overwhelming odds, to prevent their country from becoming part of the mighty British Empire. Led by Generals de Wet, Beyers, and de la Rey, Lieutenant-Colonel Maritz and Major Kemp, they took up arms in a doomed rebellion, without proper weapons, equipment or organisation--by the time they were defeated the casualty figures for both sides exceeded those that would later result from the German South West campaign. Charles Molteno Murray, 37 years old, was a GP in Kenilworth, Cape Town, at the time. His father was an Irish immigrant doctor, his mother the daughter of the first Prime Minister of the Cape, Sir John Charles Molteno. In spite of having a busy and successful practice, with a surgical appointment at Victoria Hospital, Charles Murray volunteered for duty and soon found himself in the Orange Free State and northern Cape, caring for the wounded and dying of both sides in the rebellion. He kept a meticulous record of his experiences, written on loose-leaf pages sent as letters to his wife, which were later bound into leather-backed diaries. These diaries were passed on to his grandson, Dr Robert Murray, who had them transcribed into modern format. They contain details of daily life in the midst of military action, and also insights into important and little-publicised events of the Boer Rebellion of 1914.

  15. Chemo-stratigraphy in the Murray Formation Using ChemCam

    NASA Astrophysics Data System (ADS)

    Blaney, D. L.; Anderson, R. B.; Bridges, N.; Bridges, J.; Calef, F. J., III; Clegg, S. M.; Le Deit, L.; Fisk, M. R.; Forni, O.; Gasnault, O.; Kah, L. C.; Kronyak, R. E.; Lanza, N.; Lasue, J.; Mangold, N.; Maurice, S.; Milliken, R.; Ming, D. W.; Nachon, M.; Newsom, H. E.; Rapin, W.; Stack, K.; Sumner, D. Y.; Wiens, R. C.

    2015-12-01

    Curiosity has completed a detailed chemo-stratigraphy analysis at the Pahrump exposure of the Murray formation. In total >570 chemical measurements and supporting remote micro images to classify texturally were collected. Chemical trends with both stratigraphic position and with texture were evaluated. From these data emerges a complex aqueous history where sediments have interacted with fluids with variable chemistry in distinct episodes. The ChemCam data collected at the nearby "Garden City" (GC) vein complex provides constraints on the chemical evolution of the Pahrump. GC is thought be stratigraphically above the Pahrump outcrop. Fluids producing the veins likely also migrated through the Pahrump sediments. Multiple episodes of fluids are evident at GC, forming distinct Ca sulfate, F-rich, enhanced MgO, and FeO-rich veins. These different fluid chemistries could be the result of distinct fluids migrating through the section from a distance with a pre-established chemical signature, fluids locally evolved from water rock interactions, or both. Texturally rocks have been classified into two distinct categories: fine grained or as cross-bedded sandstones. The sandstones have significantly lower SiO2, Al2O3, and K2O and higher FeO, and CaO. Fine grained rocks have further been sub-classified as resistant and recessive with other textural features such as laminations and pits noted.The strongest chemical trend in the fine-grained sandstones shows enhancements in MgO and FeO in erosion-resistant materials compared to fine grained recessive units, suggesting that increased abundance of Mg- and/or iron-rich cements may provide additional strength. The MgO and FeO variations with texture are independent of stratigraphic locations (e.g resistant material at both the bottom and top of the outcrop both are enhanced in MgO and FeO). The presence of the GC MgO and FeO rich veins provides additional evidence for fluids rich in these elements were present in the outcrop. Other

  16. Radiobiology of Small Hive Beetle (Coleoptera: Nitidulidae) and Prospects for Management Using Sterile Insect Releases.

    PubMed

    Downey, Danielle; Chun, Stacey; Follett, Peter

    2015-06-01

    Small hive beetle, Aethina tumida Murray (Coleoptera: Nitidulidae), is considered a serious threat to beekeeping in the Western Hemisphere, Australia, and Europe mainly due to larval feeding on honey, pollen, and brood of the European honeybee, Apis mellifera L. Control methods are limited for this pest. Studies were conducted to provide information on the radiobiology of small hive beetle and determine the potential for sterile insect releases as a control strategy. Adult males and females were equally sensitive to a radiation dose of 80 Gy and died within 5-7 d after treatment. In reciprocal crossing studies, irradiation of females only lowered reproduction to a greater extent than irradiation of males only. For matings between unirradiated males and irradiated females, mean reproduction was reduced by >99% at 45 and 60 Gy compared with controls, and no larvae were produced at 75 Gy. Irradiation of prereproductive adults of both sexes at 45 Gy under low oxygen (1-4%) caused a high level of sterility (>99%) while maintaining moderate survivorship for several weeks, and should suffice for sterile insect releases. Sterile insect technique holds potential for suppressing small hive beetle populations in newly invaded areas and limiting its spread.

  17. Method of application of tylosin, an antibiotic for American foulbrood control, with effects on small hive beetle (Coleoptera: Nitidulidae) populations.

    PubMed

    Elzen, P J; Westervelt, D; Causey, D; Ellis, J; Hepburn, H R; Neumann, P

    2002-12-01

    The method of application of the antibiotic tylosin (Tylan) for control of oxytetracycline-resistant American foulbrood (Paenibacillus larvae White) was tested in honeybee (Apis mellifera L.) colonies. A powdered sugar mixture with tylosin, applied as a dust, was efficacious in eliminating American foulbrood symptoms at a rate of 200-mg Tylan per 20 g of powdered sugar, applied at weekly intervals for 3 weeks. A second method of treatment consisting of Tylan mixed with granulated sugar and vegetable shortening and applied once as a patty, at an equivalent total dose as the dust method, to diseased colonies also effectively eliminated symptoms of disease. In all colonies treated with patties, however, small hive beetle (Aethina tumida Murray) populations significantly increased, compared with the powder sugar method or untreated controls. Bee populations in patty-treated colonies also were significantly reduced, most likely the result of the invasion and proliferation of adult and larval small hive beetles. Such reduction in colony strength was not seen in dust-treated colonies. Because of the obvious damaging populations of small hive beetles, concerns about development of disease resistance, unknown risks of residues, and lack of support by regulatory agencies for the use of the patty method, the use of the dust method of tylosin is greatly favored over the patty method.

  18. Prioritizing Wetlands for Waterbirds in a Boom and Bust System: Waterbird Refugia and Breeding in the Murray-Darling Basin.

    PubMed

    Bino, Gilad; Kingsford, Richard T; Porter, John

    2015-01-01

    Dryland rivers have considerable flow variability, producing complex ecosystems, processes, and communities of organisms that vary over space and time. They are also among the more vulnerable of the world's ecosystems. A key strategy for conservation of dryland rivers is identifying and maintaining key sites for biodiversity conservation, particularly protecting the quantity and quality of flow and flooding regimes. Extreme variability considerably challenges freshwater conservation planning. We systematically prioritised wetlands for waterbirds (simultaneously for 52 species), across about 13.5% of the Murray-Darling Basin (1,061,469 km2), using a 30-year record of systematic aerial surveys of waterbird populations. Nine key wetlands in this area, primarily lakes, floodplains, and swamps, consistently contributed to a representation target (80%) of total abundances of all 52 waterbird species. The long temporal span of our data included dramatic availability (i.e., booms) and scarcity (i.e., busts) of water, providing a unique opportunity to test prioritisation at extremes of variation. These extremes represented periods when waterbirds were breeding or concentrating on refugia, varying wetland prioritisation. In dry years, important wetlands for waterbirds were riverine and lacustrine (12 wetlands) but this changed in wet years to lacustrine and palustrine (8 wetlands). Such variation in ecosystem condition substantially changes the relative importance of individual wetlands for waterbirds during boom and bust phases. Incorporating this variability is necessary for effective conservation of Murray-Darling Basin waterbirds, with considerable generality for other similarly variable systems around the world.

  19. Noachian Impact Ejecta on Murray Ridge and Pre-impact Rocks on Wdowiak Ridge, Endeavour Crater, Mars: Opportunity Observations

    NASA Technical Reports Server (NTRS)

    Mittlefehldt, D. W.; Gellert, R.; Ming, D. W.; Morris, R. V.; Schroeder, C.; Yen, A. S.; Farrand, W. H.; Arvidson, R. E.; Franklin, B. J.; Grant, J. A.; Herkenhoff, K. E.; Jolliff, B. J.

    2015-01-01

    Mars Exploration Rover Opportunity has been exploring Meridiani Planum since January 2004, and has completed 4227% of its primary mission. Opportunity has been investigating the geology of the rim of 22 km diameter Endeavour crater, first on the Cape York segment and now on Cape Tribulation. The outcrops are divided York; (ii) the Shoemaker fm, impact breccias representing ejecta from the crater; into three formations: (i) the lower Matijevic fm, a pre-impact lithology on Cape and (iii) the upper Grasberg fm, a post-impact deposit that drapes the lower portions of the eroded rim segments. On the Cape Tribulation segment Opportunity has been studying the rocks on Murray Ridge, with a brief sojourn to Wdowiak Ridge west of the rim segment. team member Thomas Wdowiak, who died in 2013.) One region of Murray Ridge has distinctive CRISM spectral characteristics indicating the presence of a small concentration of aluminous smectite based on a 2.2 micron Al-OH combination band (hereafter, the Al-OH region).

  20. A multiobjective ant colony optimization approach for scheduling environmental flow management alternatives with application to the River Murray, Australia

    NASA Astrophysics Data System (ADS)

    Szemis, J. M.; Dandy, G. C.; Maier, H. R.

    2013-10-01

    In regulated river systems, such as the River Murray in Australia, the efficient use of water to preserve and restore biota in the river, wetlands, and floodplains is of concern for water managers. Available management options include the timing of river flow releases and operation of wetland flow control structures. However, the optimal scheduling of these environmental flow management alternatives is a difficult task, since there are generally multiple wetlands and floodplains with a range of species, as well as a large number of management options that need to be considered. Consequently, this problem is a multiobjective optimization problem aimed at maximizing ecological benefit while minimizing water allocations within the infrastructure constraints of the system under consideration. This paper presents a multiobjective optimization framework, which is based on a multiobjective ant colony optimization approach, for developing optimal trade-offs between water allocation and ecological benefit. The framework is applied to a reach of the River Murray in South Australia. Two studies are formulated to assess the impact of (i) upstream system flow constraints and (ii) additional regulators on this trade-off. The results indicate that unless the system flow constraints are relaxed, there is limited additional ecological benefit as allocation increases. Furthermore the use of regulators can increase ecological benefits while using less water. The results illustrate the utility of the framework since the impact of flow control infrastructure on the trade-offs between water allocation and ecological benefit can be investigated, thereby providing valuable insight to managers.

  1. Prioritizing Wetlands for Waterbirds in a Boom and Bust System: Waterbird Refugia and Breeding in the Murray-Darling Basin.

    PubMed

    Bino, Gilad; Kingsford, Richard T; Porter, John

    2015-01-01

    Dryland rivers have considerable flow variability, producing complex ecosystems, processes, and communities of organisms that vary over space and time. They are also among the more vulnerable of the world's ecosystems. A key strategy for conservation of dryland rivers is identifying and maintaining key sites for biodiversity conservation, particularly protecting the quantity and quality of flow and flooding regimes. Extreme variability considerably challenges freshwater conservation planning. We systematically prioritised wetlands for waterbirds (simultaneously for 52 species), across about 13.5% of the Murray-Darling Basin (1,061,469 km2), using a 30-year record of systematic aerial surveys of waterbird populations. Nine key wetlands in this area, primarily lakes, floodplains, and swamps, consistently contributed to a representation target (80%) of total abundances of all 52 waterbird species. The long temporal span of our data included dramatic availability (i.e., booms) and scarcity (i.e., busts) of water, providing a unique opportunity to test prioritisation at extremes of variation. These extremes represented periods when waterbirds were breeding or concentrating on refugia, varying wetland prioritisation. In dry years, important wetlands for waterbirds were riverine and lacustrine (12 wetlands) but this changed in wet years to lacustrine and palustrine (8 wetlands). Such variation in ecosystem condition substantially changes the relative importance of individual wetlands for waterbirds during boom and bust phases. Incorporating this variability is necessary for effective conservation of Murray-Darling Basin waterbirds, with considerable generality for other similarly variable systems around the world. PMID:26161652

  2. Prioritizing Wetlands for Waterbirds in a Boom and Bust System: Waterbird Refugia and Breeding in the Murray-Darling Basin

    PubMed Central

    Bino, Gilad; Kingsford, Richard T.; Porter, John

    2015-01-01

    Dryland rivers have considerable flow variability, producing complex ecosystems, processes, and communities of organisms that vary over space and time. They are also among the more vulnerable of the world’s ecosystems. A key strategy for conservation of dryland rivers is identifying and maintaining key sites for biodiversity conservation, particularly protecting the quantity and quality of flow and flooding regimes. Extreme variability considerably challenges freshwater conservation planning. We systematically prioritised wetlands for waterbirds (simultaneously for 52 species), across about 13.5% of the Murray-Darling Basin (1,061,469 km2), using a 30-year record of systematic aerial surveys of waterbird populations. Nine key wetlands in this area, primarily lakes, floodplains, and swamps, consistently contributed to a representation target (80%) of total abundances of all 52 waterbird species. The long temporal span of our data included dramatic availability (i.e., booms) and scarcity (i.e., busts) of water, providing a unique opportunity to test prioritisation at extremes of variation. These extremes represented periods when waterbirds were breeding or concentrating on refugia, varying wetland prioritisation. In dry years, important wetlands for waterbirds were riverine and lacustrine (12 wetlands) but this changed in wet years to lacustrine and palustrine (8 wetlands). Such variation in ecosystem condition substantially changes the relative importance of individual wetlands for waterbirds during boom and bust phases. Incorporating this variability is necessary for effective conservation of Murray-Darling Basin waterbirds, with considerable generality for other similarly variable systems around the world. PMID:26161652

  3. Dynamics of Murray-Darling floodplain forests under multiple stressors: The past, present, and future of an Australian icon

    NASA Astrophysics Data System (ADS)

    Mac Nally, Ralph; Cunningham, Shaun C.; Baker, Patrick J.; Horner, Gillis J.; Thomson, James R.

    2011-12-01

    We review the human actions, proximal stressors and ecological responses for floodplain forests Australia's largest river system—the Murray-Darling Basin. A conceptual model for the floodplain forests was built from extensive published information and some unpublished results for the system, which should provide a basis for understanding, studying and managing the ecology of floodplains that face similar environmental stresses. Since European settlement, lowlands areas of the basin have been extensively cleared for agriculture and remnant forests heavily harvested for timber. The most significant human intervention is modification of river flows, and the reduction in frequency, duration and timing of flooding, which are compounded by climate change (higher temperatures and reduced rainfall) and deteriorating groundwater conditions (depth and salinity). This has created unfavorable conditions for all life-history stages of the dominant floodplain tree (Eucalyptus camaldulensis Dehnh.). Lack of extensive flooding has led to widespread dieback across the Murray River floodplain (currently 79% by area). Management for timber resources has altered the structure of these forests from one dominated by large, widely spreading trees to mixed-aged stands of smaller pole trees. Reductions in numbers of birds and other vertebrates followed the decline in habitat quality (hollow-bearing trees, fallen timber). Restoration of these forests is dependent on substantial increases in the frequency and extent of flooding, improvements in groundwater conditions, re-establishing a diversity of forest structures, removal of grazing and consideration of these interacting stressors.

  4. GRACE Assimilation into Hydrological Model Improves Representation of Drought-induced Groundwater Trend over Murray-Darling Basin, Australia

    NASA Astrophysics Data System (ADS)

    Schumacher, Maike; Forootan, Ehsan; Van Dijk, Albert I. J. M.; Müller Schmied, Hannes; Crosbie, Russell S.; Kusche, Jürgen; Döll, Petra

    2016-04-01

    The Murray-Darling Basin, one of the largest and driest river basins over the world, experienced a long-term drought (over 2003-2009), the so-called Millennium Drought. As a result, the terrestrial water storage in the region decreased, which was attributed to dry meteorological conditions and extensive irrigation for agriculture. We used simulations of the WaterGAP Global Hydrology Model (WGHM) driven by monthly climate fields from the Climate Research Unit's Time Series (CRU TS 3.2) and precipitation data from the Global Precipitation Climatology Center (GPCC) to estimate linear trends in soil, surface and groundwater compartments, as well as total water storage changes (TWSC). However, the model was not able to capture the effect of the Millennium Drought on the storage compartments likely due to missing processes in dry regions or climate forcing uncertainties. Particularly, TWSC simulated by standard WGHM did not reproduce the negative trend during 2003-2009. Therefore, in this study, we investigate whether assimilating TWSC from the Gravity Recovery And Climate Experiment (GRACE) satellite mission into WGHM enables a more realistic representation of the Millennium Drought on the basin hydrology. Firstly, the quality of monthly GRACE TWSC and its post-processing over the Murray-Darling Basin was assessed. An improved calibration and data assimilation (C/DA) approach (Schumacher et al., JoG-2016) was then applied to integrate GRACE TWSC along with its full error covariance information into WGHM during 2003-2009. Independent observations of soil moisture, groundwater and surface water extent were used to validate the model outputs after C/DA. Our investigations indicate that the integration of GRACE data indeed introduces a negative trend to TWSC simulations of WGHM, which occurred predominantly in the south (Murray Basin). The trend was found to be associated with the changes in groundwater storage, which was confirmed through validation with in

  5. The effects of turbidity, prey density and environmental complexity on the feeding of juvenile Murray cod Maccullochella peelii.

    PubMed

    Allen-Ankins, S; Stoffels, R J; Pridmore, P A; Vogel, M T

    2012-01-01

    Juvenile Murray cod Maccullochella peelii exhibited a type II functional response while preying on blackworms Lumbriculus variegatus, and the parameters of the type II model did not differ significantly between clear (0 NTU) and turbid (150 NTU) treatments. Further experiments showed that vision may not be necessary for prey detection and capture by juvenile M. peelii; consumption of inanimate prey was not significantly different between light and dark (<1 × 10(-4) µE m(-2) s(-1)) trials. These results imply that the sensory physiology of M. peelii is well adapted to a turbid visual environment. In addition, habitat complexity increased the food consumption rate of juvenile M. peelii, perhaps by relaxing innate predator avoidance behaviours that depress foraging in more open environments. PMID:22220898

  6. Effects of sediment quality on macroinvertebrates in the Sunraysia region of the Murray-Darling Rivers, Australia.

    PubMed

    Sharley, David J; Hoffmann, Ary A; Pettigrove, Vincent

    2008-12-01

    A field-based microcosm approach was tested to identify deterioration of sediment quality in waterways using freshwater macroinvertebrates. The method can potentially identify the nature of contaminants based on species-specific responses. Sediments were collected from the Murray and Darling Rivers and irrigation drains within the Sunraysia region of south-eastern Australia and compared to non-polluted reference sediment. Clean sediments were also spiked with fertiliser to test whether nutrients affected the aquatic fauna. Seven of the eight sediments from the Sunraysia region had a negative impact on the macroinvertebrates, in particular sediment from the Darling River, which supported an impoverished fauna. Three species of chironomid showed varied responses to sediment quality and, although it was hypothesised that nutrients may have impacted on the macroinvertebrate fauna, the results suggest that other pollutants are also involved. The field-based microcosm method proved effective for determining the impact of sediment quality on indigenous macroinvertebrates.

  7. Addressing the Challenges of Diverse Knowledge Systems through Landscape Analysis: A Case Study in the Murray-Darling Basin, Australia

    NASA Astrophysics Data System (ADS)

    Lynch, A. H.; Griggs, D.; Joachim, L.; Heider, C.

    2014-12-01

    The Barmah-Millewa region of the Murray-Darling Basin is the heart of the Traditional Lands of the Yorta Yorta people. Management of water and ecosystem services in the region is governed by a wide array of sometimes inconsistent legislation and policies with differing rules, management focus and plans, and permitting and allocation procedures. Geographic information systems are a common framework for the integration of Indigenous knowledge and insights into natural resources management. But only with appropriate collection, management and database design protocols in place can geodatabase development and analysis support the effective and respectful participation of the Yorta Yorta community in management of this ecologically, economically and culturally important region. Here we describe the knowledge collection and protection protocols that were applied to develop the integrated geodatabase. We present approaches to generating meaningful guidance for water managers on the cultural implications of water allocation decisions.

  8. Effects of the commercial antiandrogen flutamide on the biomarkers of reproduction in male Murray rainbowfish (Melanotaenia fluviatilis).

    PubMed

    Bhatia, Harpreet; Kumar, Anupama; Ogino, Yukiko; Du, Jun; Gregg, Adrienne; Chapman, John; McLaughlin, Mike J; Iguchi, Taisen

    2014-05-01

    The endocrine responses in male Murray rainbowfish (Melanotaenia fluviatilis) were evaluated after exposures to biologically active concentrations of the nonsteroidal pharmaceutical, flutamide. Fish were exposed to nominal concentrations of 125 µg/L, 250 µg/L, 500 µg/L, and 1000 µg/L of flutamide for 7 d, after which plasma vitellogenin concentration; brain aromatase activity; and hepatic expression of the genes for vitellogenin, choriogenin, and androgen and estrogen receptors were assessed. Qualitative assessment of the testes of the fish exposed to flutamide exhibited hindrance in the transformation of spermatogonia to spermatozoa and increased testicular anomalies, such as multinucleated and pyknotic cells and interstitial fibrosis. An increase in the hepatosomatic index with respect to the controls was noted after treating the fish with flutamide at all concentrations. Vitellogenin was induced in plasma in the 1000 µg/L flutamide group. The activity of aromatase in the brain declined significantly after exposures to flutamide at all concentrations. Males exposed to 1000 µg/L of flutamide showed a downregulation in the genes encoding androgen receptors α and β. The expression of the gene for the estrogen receptor α was induced and of vitellogenin was downregulated after treatment with 250 µg/L to 1000 µg/L of flutamide. The results suggest that 7-d exposures to 125 µg/L to 1000 µg/L flutamide can impair the reproductive endocrine system in male Murray rainbowfish at multiple levels by an antiandrogenic mode of action.

  9. Drought to flood: a comparative assessment of four parallel surface water treatments during the 2010-2012 inflows to the Murray-Darling Basin, South Australia.

    PubMed

    Braun, Kalan; Fabris, Rolando; Morran, Jim; Ho, Lionel; Drikas, Mary

    2014-08-01

    Four treatment processes; conventional coagulation, magnetic ion exchange (MIEX)/coagulation, with and without granular activated carbon (GAC), and membrane treatment combining microfiltration (MF) and nanofiltration (NF), were operated in parallel using the same source water from the Murray-Darling basin in South Australia. During the two year study, high levels of natural organic matter and turbidity arising from floods affecting the Murray-Darling basin in 2010-2012 challenged the four processes. The comparative study indicated that all four processes could effectively meet basic water quality guidelines of turbidity and colour despite challenging source water quality but that the more advanced treatments improved overall organic and bacterial removal. Interestingly, the high organics and turbidity arising from the floods resulted in improved treatment efficiency for all treatments incorporating coagulation to the extent that, despite flood conditions, treated water quality could remain comparatively constant provided that the process was operated and optimised effectively.

  10. Parametric and adsorption kinetic studies of methylene blue removal from simulated textile water using durian (Durio zibethinus murray) skin.

    PubMed

    Anisuzzaman, S M; Joseph, Collin G; Krishnaiah, D; Bono, A; Ooi, L C

    2015-01-01

    In this study, durian (Durio zibethinus Murray) skin was examined for its ability to remove methylene blue (MB) dye from simulated textile wastewater. Adsorption equilibrium and kinetics of MB removal from aqueous solutions at different parametric conditions such as different initial concentrations (2-10 mg/L), biosorbent dosages (0.3-0.7 g) and pH solution (4-9) onto durian skin were studied using batch adsorption. The amount of MB adsorbed increased from 3.45 to 17.31 mg/g with the increase in initial concentration of MB dye; whereas biosorbent dosage increased from 1.08 to 2.47 mg/g. Maximum dye adsorption capacity of the durian skin was found to increase from 3.78 to 6.40 mg/g, with increasing solution pH. Equilibrium isotherm data were analyzed according to Langmuir and Freundlich isotherm models. The sorption equilibrium was best described by the Freundlich isotherm model with maximum adsorption capacity of 7.23 mg/g and this was due to the heterogeneous nature of the durian skin surface. Kinetic studies indicated that the sorption of MB dye tended to follow the pseudo second-order kinetic model with promising correlation of 0.9836 < R(2) < 0.9918.

  11. Statistical description of wetland hydrological connectivity to the River Murray in South Australia under both natural and regulated conditions

    NASA Astrophysics Data System (ADS)

    Robinson, Sean J.; Souter, Nicholas J.; Bean, Nigel G.; Ross, Joshua V.; Thompson, Richard M.; Bjornsson, Kjartan T.

    2015-12-01

    The effect of river regulation on the connectivity of the South Australian River Murray to its floodplain wetlands was examined using unregulated 'natural' and 'regulated' river flow data simulated between the years 1895 to 2009. A sample of 185 wetlands was used to calculate a range of connectivity statistics under both simulation scenarios. These statistics summarised the timing and duration of both connection and disconnection, as well as inundated area. Wetlands ranged from being permanently inundated, connected multiple times per year due to both small fluctuations in river level and the annual flood pulse, to flooded with diminishing frequency depending on the size of the annual flood pulse and their position on the floodplain. Under the natural scenario a wide range of wetland connectivity profiles were recorded whereas under the regulated scenario wetlands tended to be either permanently inundated or infrequently flooded. Under natural conditions wetlands that required higher flow before connecting were less frequently connected and for shorter periods. Under regulated conditions a larger proportion of wetland area was permanently connected than under natural conditions, however the annual flood pulse connected a larger area of wetlands under natural conditions. The information derived from this analysis can be used to design wetland management plans for individual wetlands within a river-wide management regime restoring lost hydrological variability.

  12. Water markets as a vehicle for reforming water resource allocation in the Murray-Darling Basin of Australia

    NASA Astrophysics Data System (ADS)

    Crase, Lin; Pagan, Phil; Dollery, Brian

    2004-08-01

    Water trade and the establishment of water markets continue to gain popularity among legislators as a vehicle for progressing the reform of the water resources sector in Australia. This has manifested itself at the most recent meeting of the Council of Australian Governments, where a range of changes to address the declining health of inland rivers included the strengthening of water property rights. These views appear to be premised on the belief that nonattenuated water rights are a prerequisite for maximizing the productive benefits of water and are broadly in line with notions often derived from neoclassical market theory. However, in spite of the apparent faith in the market mechanism, there is a growing literature illustrating the limitations of the market framework in the context of water resource management. Accordingly, there would appear to be grounds for a more cautious approach that recognizes the potential for market failures to emerge. This article explores the present growth of water markets and the legislative background that circumscribes them in the Murray-Darling Basin. Recognizing the constraints imposed by the status quo, this study then examines the implications of stronger property rights for entitlement holders and the use of water markets in the context of the goals assigned to Australian water managers.

  13. Development of a modified Hess-Murray law for non-Newtonian fluids in bifurcating micro-channels

    NASA Astrophysics Data System (ADS)

    Emerson, David; Barber, Robert

    2012-11-01

    Microfluidic manifolds frequently require the use of bifurcating channels and these can be used to create precise concentration gradients for chemical applications. More recently, novel devices have been attempting to replicate vasculatures or bronchial structures occurring in nature with the goal of creating artificial bifurcations that mimic the basic principles of designs found in nature. In previous work, we have used the biological principles behind the Hess-Murray Law, where bifurcating structures exhibit a constant stress profile and follow a third-power rule, to enable rectangular or trapezoidal micro-channels to be fabricated using conventional lithographic or wet-etching techniques. Using biological principles to design man made devices is generally referred to as biomimetics and this approach has found success in a range of new and emerging topics. However, our previous work was limited to Newtonian flows. More recently, we have used the Rabinovitsch-Mooney equation to be able to extend our analysis to non-Newtonian fluids. This has allowed us to develop a new rule that can provide a design criterion to predict channel dimensions for non-Newtonian flows obeying a constant stress biological principle. The Engineering and Physical Sciences Research Council for support of CCP12 and Programme Grant award (grant number EP/I011927/1).

  14. Steps toward “useful” hydroclimatic scenarios for water resource management in the Murray-Darling Basin

    NASA Astrophysics Data System (ADS)

    Kiem, Anthony S.; Verdon-Kidd, Danielle C.

    2011-12-01

    There is currently a distinct gap between what climate science can provide and information that is practically useful for (and needed by) natural resource managers. Improved understanding, and model representations, of interactions between the various climate drivers (both regional and global scale), combined with increased knowledge about the interactions between climate processes and hydrological processes at the regional scale, is necessary for improved attribution of climate change impacts, forecasting at a range of temporal scales and extreme event risk profiling (e.g., flood, drought, and bushfire). It is clear that the science has a long way to go in closing these research gaps; however, in the meantime water resource managers in the Murray-Darling Basin, and elsewhere, require hydroclimatic projections (i.e., seasonal to multidecadal future scenarios) that are regionally specific and, importantly, take into account the impacts, and associated uncertainties, of both natural climate variability and anthropogenic change. The strengths and weaknesses of various approaches for supplying this information are discussed in this paper.

  15. MABAHISS/John Murray 50th Anniversary: Marine Science of the North West Indian Ocean and Adjacent Waters. Report of a Symposium on the Occasion of the 50th Anniversary of the MABAHISS/John Murray Expedition (1933/34) (Alexandria, Egypt, September 3-7, 1983). Unesco Reports in Marine Science, No. 31.

    ERIC Educational Resources Information Center

    United Nations Educational, Scientific, and Cultural Organization, Paris (France). Div. of Marine Sciences.

    An international symposium was convened to celebrate the 50th anniversary of the John Murray Expedition to the Indian Ocean on board the Egyptian research vessel Mabahiss (1933-1934). This report describes the symposium and provides abstracts and syntheses of the papers presented in the various marine scientific disciplines covering the areas of…

  16. The changing epidemiology of Murray Valley encephalitis in Australia: the 2011 outbreak and a review of the literature.

    PubMed

    Selvey, Linda A; Dailey, Lynne; Lindsay, Michael; Armstrong, Paul; Tobin, Sean; Koehler, Ann P; Markey, Peter G; Smith, David W

    2014-01-01

    Murray Valley encephalitis virus (MVEV) is the most serious of the endemic arboviruses in Australia. It was responsible for six known large outbreaks of encephalitis in south-eastern Australia in the 1900s, with the last comprising 58 cases in 1974. Since then MVEV clinical cases have been largely confined to the western and central parts of northern Australia. In 2011, high-level MVEV activity occurred in south-eastern Australia for the first time since 1974, accompanied by unusually heavy seasonal MVEV activity in northern Australia. This resulted in 17 confirmed cases of MVEV disease across Australia. Record wet season rainfall was recorded in many areas of Australia in the summer and autumn of 2011. This was associated with significant flooding and increased numbers of the mosquito vector and subsequent MVEV activity. This paper documents the outbreak and adds to our knowledge about disease outcomes, epidemiology of disease and the link between the MVEV activity and environmental factors. Clinical and demographic information from the 17 reported cases was obtained. Cases or family members were interviewed about their activities and location during the incubation period. In contrast to outbreaks prior to 2000, the majority of cases were non-Aboriginal adults, and almost half (40%) of the cases acquired MVEV outside their area of residence. All but two cases occurred in areas of known MVEV activity. This outbreak continues to reflect a change in the demographic pattern of human cases of encephalitic MVEV over the last 20 years. In northern Australia, this is associated with the increasing numbers of non-Aboriginal workers and tourists living and travelling in endemic and epidemic areas, and also identifies an association with activities that lead to high mosquito exposure. This outbreak demonstrates that there is an ongoing risk of MVEV encephalitis to the heavily populated areas of south-eastern Australia.

  17. Collocated comparisons of continuous and filter-based PM2.5 measurements at Fort McMurray, Alberta, Canada

    PubMed Central

    Hsu, Yu-Mei; Wang, Xiaoliang; Chow, Judith C.; Watson, John G.; Percy, Kevin E.

    2016-01-01

    ABSTRACT Collocated comparisons for three PM2.5 monitors were conducted from June 2011 to May 2013 at an air monitoring station in the residential area of Fort McMurray, Alberta, Canada, a city located in the Athabasca Oil Sands Region. Extremely cold winters (down to approximately −40°C) coupled with low PM2.5 concentrations present a challenge for continuous measurements. Both the tapered element oscillating microbalance (TEOM), operated at 40°C (i.e., TEOM40), and Synchronized Hybrid Ambient Real-time Particulate (SHARP, a Federal Equivalent Method [FEM]), were compared with a Partisol PM2.5 U.S. Federal Reference Method (FRM) sampler. While hourly TEOM40 PM2.5 were consistently ~20–50% lower than that of SHARP, no statistically significant differences were found between the 24-hr averages for FRM and SHARP. Orthogonal regression (OR) equations derived from FRM and TEOM40 were used to adjust the TEOM40 (i.e., TEOMadj) and improve its agreement with FRM, particularly for the cold season. The 12-year-long hourly TEOMadj measurements from 1999 to 2011 based on the OR equations between SHARP and TEOM40 were derived from the 2-year (2011–2013) collocated measurements. The trend analysis combining both TEOMadj and SHARP measurements showed a statistically significant decrease in PM2.5 concentrations with a seasonal slope of −0.15 μg m−3 yr−1 from 1999 to 2014.Implications: Consistency in PM2.5 measurements are needed for trend analysis. Collocated comparison among the three PM2.5 monitors demonstrated the difference between FRM and TEOM, as well as between SHARP and TEOM. The orthogonal regressions equations can be applied to correct historical TEOM data to examine long-term trends within the network. PMID:26727574

  18. Spatio-temporal modelling of heat stress and climate change implications for the Murray dairy region, Australia.

    PubMed

    Nidumolu, Uday; Crimp, Steven; Gobbett, David; Laing, Alison; Howden, Mark; Little, Stephen

    2014-08-01

    The Murray dairy region produces approximately 1.85 billion litres of milk each year, representing about 20 % of Australia's total annual milk production. An ongoing production challenge in this region is the management of the impacts of heat stress during spring and summer. An increase in the frequency and severity of extreme temperature events due to climate change may result in additional heat stress and production losses. This paper assesses the changing nature of heat stress now, and into the future, using historical data and climate change projections for the region using the temperature humidity index (THI). Projected temperature and relative humidity changes from two global climate models (GCMs), CSIRO MK3.5 and CCR-MIROC-H, have been used to calculate THI values for 2025 and 2050, and summarized as mean occurrence of, and mean length of consecutive high heat stress periods. The future climate scenarios explored show that by 2025 an additional 12-15 days (compared to 1971 to 2000 baseline data) of moderate to severe heat stress are likely across much of the study region. By 2050, larger increases in severity and occurrence of heat stress are likely (i.e. an additional 31-42 moderate to severe heat stress days compared with baseline data). This increasing trend will have a negative impact on milk production among dairy cattle in the region. The results from this study provide useful insights on the trends in THI in the region. Dairy farmers and the dairy industry could use these results to devise and prioritise adaptation options to deal with projected increases in heat stress frequency and severity.

  19. Spatio-temporal modelling of heat stress and climate change implications for the Murray dairy region, Australia

    NASA Astrophysics Data System (ADS)

    Nidumolu, Uday; Crimp, Steven; Gobbett, David; Laing, Alison; Howden, Mark; Little, Stephen

    2014-08-01

    The Murray dairy region produces approximately 1.85 billion litres of milk each year, representing about 20 % of Australia's total annual milk production. An ongoing production challenge in this region is the management of the impacts of heat stress during spring and summer. An increase in the frequency and severity of extreme temperature events due to climate change may result in additional heat stress and production losses. This paper assesses the changing nature of heat stress now, and into the future, using historical data and climate change projections for the region using the temperature humidity index (THI). Projected temperature and relative humidity changes from two global climate models (GCMs), CSIRO MK3.5 and CCR-MIROC-H, have been used to calculate THI values for 2025 and 2050, and summarized as mean occurrence of, and mean length of consecutive high heat stress periods. The future climate scenarios explored show that by 2025 an additional 12-15 days (compared to 1971 to 2000 baseline data) of moderate to severe heat stress are likely across much of the study region. By 2050, larger increases in severity and occurrence of heat stress are likely (i.e. an additional 31-42 moderate to severe heat stress days compared with baseline data). This increasing trend will have a negative impact on milk production among dairy cattle in the region. The results from this study provide useful insights on the trends in THI in the region. Dairy farmers and the dairy industry could use these results to devise and prioritise adaptation options to deal with projected increases in heat stress frequency and severity.

  20. A century-scale, human-induced ecohydrological evolution of wetlands of two large river basins in Australia (Murray) and China (Yangtze)

    NASA Astrophysics Data System (ADS)

    Kattel, Giri R.; Dong, Xuhui; Yang, Xiangdong

    2016-06-01

    Recently, the provision of food and water resources of two of the world's largest river basins, the Murray and the Yangtze, has been significantly altered through widespread landscape modification. Long-term sedimentary archives, dating back for some centuries from wetlands of these river basins, reveal that rapid, basin-wide development has reduced the resilience of biological communities, resulting in considerable decline in ecosystem services, including water quality. Large-scale human disturbance to river systems, due to river regulation during the mid-20th century, has transformed the hydrology of rivers and wetlands, causing widespread modification of aquatic biological communities. Changes to cladoceran zooplankton (water fleas) were used to assess the historical hydrology and ecology of three Murray and Yangtze river wetlands over the past century. Subfossil assemblages of cladocerans retrieved from sediment cores (94, 45, and 65 cm) of three wetlands: Kings Billabong (Murray), Zhangdu, and Liangzi lakes (Yangtze), showed strong responses to hydrological changes in the river after the mid-20th century. In particular, river regulation caused by construction of dams and weirs together with river channel modifications, has led to significant hydrological alterations. These hydrological disturbances were either (1) a prolonged inundation of wetlands or (2) reduced river flow, both of which caused variability in wetland depth. Inevitably, these phenomena have subsequently transformed the natural wetland habitats, leading to a switch in cladoceran assemblages to species preferring poor water quality, and in some cases to eutrophication. The quantitative and qualitative decline of wetland water conditions is indicative of reduced ecosystem services, and requires effective restoration measures for both river basins which have been impacted by recent socioeconomic development and climate change.

  1. Geomorphic and hydraulic controls on large-scale riverbank failure on a mixed bedrock-alluvial river system, the River Murray, South Australia: a bathymetric analysis.

    NASA Astrophysics Data System (ADS)

    De Carli, E.; Hubble, T.

    2014-12-01

    During the peak of the Millennium Drought (1997-2010) pool-levels in the lower River Murray in South Australia dropped 1.5 metres below sea level, resulting in large-scale mass failure of the alluvial banks. The largest of these failures occurred without signs of prior instability at Long Island Marina whereby a 270 metre length of populated and vegetated riverbank collapsed in a series of rotational failures. Analysis of long-reach bathymetric surveys of the river channel revealed a strong relationship between geomorphic and hydraulic controls on channel width and downstream alluvial failure. As the entrenched channel planform meanders within and encroaches upon its bedrock valley confines the channel width is 'pinched' and decreases by up to half, resulting in a deepening thalweg and channel bed incision. The authors posit that flow and shear velocities increase at these geomorphically controlled 'pinch-points' resulting in complex and variable hydraulic patterns such as erosional scour eddies, which act to scour the toe of the slope over-steepening and destabilising the alluvial margins. Analysis of bathymetric datasets between 2009 and 2014 revealed signs of active incision and erosional scour of the channel bed. This is counter to conceptual models which deem the backwater zone of a river to be one of decelerating flow and thus sediment deposition. Complex and variable flow patterns have been observed in other mixed alluvial-bedrock river systems, and signs of active incision observed in the backwater zone of the Mississippi River, United States. The incision and widening of the lower Murray River suggests the channel is in an erosional phase of channel readjustment which has implications for riverbank collapse on the alluvial margins. The prevention of seawater ingress due to barrage construction at the Murray mouth and Southern Ocean confluence, allowed pool-levels to drop significantly during the Millennium Drought reducing lateral confining support to the

  2. An unrecognised Holocene palaeo-lake at the terminus of the Murray-Darling Basin: a palaeo-discharge record and implications for current climate reconstructions

    NASA Astrophysics Data System (ADS)

    De Carli, E.; Hubble, T.; Penny, D.; Petley, D. N.; Clarke, S. L.; Hamilton, R. J.; Gadd, P.; Brand, H.

    2015-12-01

    The 1.073 million km2 Murray-Darling River Basin (MDB) drains 14% of Australia's landmass, incorporates Australia's most economically important agricultural region, and presents one of Australia's most important and contentious water security challenges. The twin Murray and Darling catchments extend from the sub-tropics to the mid latitudes, with catchment precipitation driven by synoptic-scale oceanic-atmospheric processes that include the Australian Monsoon, SAM, IPO, PDO, IOD and ENSO. In this study we report the discovery of a hitherto unrecognised terminal palaeo-lake system 'Lake Mannum' that existed during the middle to late Holocene, as evidenced by an extensive sequence of laminated muds. The deposit contains gray laminae enriched in smectite and Nd/Ti, diagnostic of palaeo-discharges originating from the Darling catchment. These gray laminae are set within olive-black background muds enriched in illite, K and Rb, diagnostic of palaeo-discharges originating from the Murray Catchment. The deposit reflects the hydrological regime of the MDB, representing the first in-situ palaeo-discharge record for the MDB and a proxy record for south-eastern Australia's precipitation and hydroclimate. Given the strong influence of major oceanic-atmospheric synoptic circulation over the river system, variability in MDB discharge and delivery of suspended sediment flux to the continental shelf have been used as proxy indicators for south-eastern Australia's palaeo-climate during the Holocene. The existence of palaeo-lake Mannum at the terminus of the MDB suggests that discharge of terrigenous sediment to the Southern Ocean was strongly suppressed during this time, meaning that Holocene climate reconstructions which rely on the marine sediment record require re-evaluation.

  3. Patterns and processes of fluvial discontinuity and sediment residence times on the lower Macquarie River, Murray-Darling Basin, Australia

    NASA Astrophysics Data System (ADS)

    Larkin, Zacchary; Ralph, Timothy; Hesse, Paul

    2014-05-01

    The supply, transport and deposition of fine-grained sediment are important factors determining the morphology of lowland rivers that experience channel breakdown and have wetlands on their lower reaches. Sediment supply and residence time determine whether reaches accumulate sediment (wetland areas) or erode sediment (channelised areas). This research investigated how processes of sedimentation and erosion drive channel breakdown and reformation in the Macquarie Marshes, a large anastomosing wetland system in the Murray-Darling Basin, Australia. Channel breakdown is attributed to a dominance of in-stream sedimentation that leads to a point where single-thread river channels cannot be maintained and so avulsion and floodout processes create smaller distributary channels and wetlands. Avulsions may reconnect channels, changing the sediment supply regime in those particular channels. Channel reformation occurs on the trunk stream where the floodplain gradient steepens enough to allow convergence of small tributaries, locally increasing stream power (and erosive energy in channels). As each river reach reforms following channel breakdown, the channel is smaller, shallower and straighter than the previous reach. One reach in this system recently (in the 1970s) became connected with a parallel channel through avulsion and has morphological characteristics that indicate a significant change in flow and sediment supply. In a pilot study using uranium-series disequilibrium methods and OSL dating, a sediment residence time of 58 +/- 2 ka was determined for sediment in the base of the active channel and a sediment residence time of 153 +/- 5 ka was determined for sediment buried in an adjacent meander that was cut off from the main channel 1,000 years ago. The apparent dramatic decrease in sediment residence time to this active channel poses an interesting question about the role of relatively new channels in transporting and depositing sediment more rapidly than the

  4. Formation and transformations of Fe-rich serpentines by asteroidal aqueous alteration processes: A nanoscale study of the Murray chondrite

    NASA Astrophysics Data System (ADS)

    Elmaleh, Agnès; Bourdelle, Franck; Caste, Florent; Benzerara, Karim; Leroux, Hugues; Devouard, Bertrand

    2015-06-01

    Fe-rich serpentines are an abundant product of the early aqueous alteration events that affected the parent bodies of CM carbonaceous chondrites. Alteration assemblages in these meteorites show a large chemical variability and although water-rock interactions occurred under anoxic conditions, serpentines contain high amounts of ferric iron. To date very few studies have documented Fe valence variations in alteration assemblages of carbonaceous chondrites, limiting the understanding of the oxidation mechanisms. Here, we report results from a nanoscale study of a calcium-aluminum-rich inclusion (CAI) from the Murray chondrite, in which alteration resulted in Fe import and Ca export by the fluid phase and in massive Fe-rich serpentines formation. We combined scanning and transmission electron microscopies and scanning transmission X-ray microscopy for characterizing the crystal chemistry of Fe-serpentines. We used reference minerals with known crystallographic orientations to quantify the Fe valence state in Fe-rich serpentines using X-ray absorption spectroscopy at the Fe L2,3-edges, yielding a robust methodology that would prove valuable for studying oxidation processes in other terrestrial or extra-terrestrial cases of serpentinization. We suggest that aqueous Fe2+ was transported to the initially Fe-depleted CAI, where local changes in pH conditions, and possibly mineral catalysis by spinel promoted the partial oxidation of Fe2+ into Fe3+ by water and the formation of Fe-rich serpentines close to the cronstedtite endmember. Such mechanisms produce H2, which opens interesting perspectives as hydrogen may have reacted with carbon species, or escaped and yield increasingly oxidizing conditions in the parent asteroid. From the results of this nanoscale study, we also propose transformations of the initial cronstedtite, destabilized by later input of Al- and Mg-rich solutions, leading to Fe2+ leaching from serpentines, as well as to random serpentine

  5. Magnetotelluric imaging of anisotropic crust near Fort McMurray, Alberta: implications for engineered geothermal system development

    NASA Astrophysics Data System (ADS)

    Liddell, Mitch; Unsworth, Martyn; Pek, Josef

    2016-06-01

    Viability for the development of an engineered geothermal system (EGS) in the oilsands region near Fort McMurray, Alberta, is investigated by studying the structure of the Precambrian basement rocks with magnetotellurics (MT). MT data were collected at 94 broad-band stations on two east-west profiles. Apparent resistivity and phase data showed little variation along each profile. The short period MT data detected a 1-D resistivity structure that could be identified as the shallow sedimentary basin underlain by crystalline basement rocks to a depth of 4-5 km. At lower frequencies a strong directional dependence, large phase splits, and regions of out-of-quadrant (OOQ) phase were detected. 2-D isotropic inversions of these data failed to produce a realistic resistivity model. A detailed dimensionality analysis found links between large phase tensor skews (˜15°), azimuths, OOQ phases and tensor decomposition strike angles at periods greater than 1 s. Low magnitude induction vectors, as well as uniformity of phase splits and phase tensor character between the northern and southern profiles imply that a 3-D analysis is not necessary or appropriate. Therefore, 2-D anisotropic forward modelling was used to generate a resistivity model to interpret the MT data. The preferred model was based on geological observations of outcropping anisotropic mylonitic basement rocks of the Charles Lake shear zone, 150 km to the north, linked to the study area by aeromagnetic and core sample data. This model fits all four impedance tensor elements with an rms misfit of 2.82 on the southern profile, and 3.3 on the northern. The conductive phase causing the anisotropy is interpreted to be interconnected graphite films within the metamorphic basement rocks. Characterizing the anisotropy is important for understanding how artificial fractures, necessary for EGS development, would form. Features of MT data commonly interpreted to be 3-D (e.g. out of OOQ phase and large phase tensor skew) are

  6. Emergence of Epizootic Ulcerative Syndrome in Native Fish of the Murray-Darling River System, Australia: Hosts, Distribution and Possible Vectors

    PubMed Central

    Boys, Craig A.; Rowland, Stuart J.; Gabor, Melinda; Gabor, Les; Marsh, Ian B.; Hum, Steven; Callinan, Richard B.

    2012-01-01

    Epizootic ulcerative syndrome (EUS) is a fish disease of international significance and reportable to the Office International des Epizootics. In June 2010, bony herring Nematalosa erebi, golden perch Macquaria ambigua, Murray cod Maccullochella peelii and spangled perch Leiopotherapon unicolor with severe ulcers were sampled from the Murray-Darling River System (MDRS) between Bourke and Brewarrina, New South Wales Australia. Histopathology and polymerase chain reaction identified the fungus-like oomycete Aphanomyces invadans, the causative agent of EUS. Apart from one previous record in N. erebi, EUS has been recorded in the wild only from coastal drainages in Australia. This study is the first published account of A. invadans in the wild fish populations of the MDRS, and is the first confirmed record of EUS in M. ambigua, M. peelii and L. unicolor. Ulcerated carp Cyprinus carpio collected at the time of the same epizootic were not found to be infected by EUS, supporting previous accounts of resistance against the disease by this species. The lack of previous clinical evidence, the large number of new hosts (n = 3), the geographic extent (200 km) of this epizootic, the severity of ulceration and apparent high pathogenicity suggest a relatively recent invasion by A. invadans. The epizootic and associated environmental factors are documented and discussed within the context of possible vectors for its entry into the MDRS and recommendations regarding continued surveillance, research and biosecurity are made. PMID:22558170

  7. Innovative 'Artificial Mussels' technology for assessing spatial and temporal distribution of metals in Goulburn-Murray catchments waterways, Victoria, Australia: effects of climate variability (dry vs. wet years).

    PubMed

    Kibria, Golam; Lau, T C; Wu, Rudolf

    2012-12-01

    The "Artificial mussel" (AM), a novel passive sampling technology, was used for the first time in Australia in freshwater to monitor and assess the risk of trace metals (Cd, Cu, Hg, Pb, and Zn). AMs were deployed at 10 sites within the Goulburn-Murray Water catchments, Victoria, Australia during a dry year (2009-2010) and a wet year (2010-2011). Our results showed that the AMs accumulated all the five metals. Cd, Pb, Hg were detected during the wet year but below detection limits during the dry year. At some sites close to orchards, vine yards and farming areas, elevated levels of Cu were clearly evident during the dry year, while elevated levels of Zn were found during the wet year; the Cu indicates localized inputs from the agricultural application of copper fungicide. The impacts from old mines were significantly less compared 'hot spots'. Our study demonstrated that climate variability (dry, wet years) can influence the metal inputs to waterways via different transport pathways. Using the AMs, we were able to identify various 'hot spots' of heavy metals, which may pose a potential risk to aquatic ecosystems (sub-lethal effects to fish) and public (via food chain metal bioaccumulation and biomagnification) in the Goulburn-Murray Water catchments. The State Protection Policy exempted artificial channels and drains from protection of beneficial use (including protection of aquatic ecosystems) and majority of sites ('hot spots') were located within artificial irrigation channels. PMID:23070068

  8. Innovative 'Artificial Mussels' technology for assessing spatial and temporal distribution of metals in Goulburn-Murray catchments waterways, Victoria, Australia: effects of climate variability (dry vs. wet years).

    PubMed

    Kibria, Golam; Lau, T C; Wu, Rudolf

    2012-12-01

    The "Artificial mussel" (AM), a novel passive sampling technology, was used for the first time in Australia in freshwater to monitor and assess the risk of trace metals (Cd, Cu, Hg, Pb, and Zn). AMs were deployed at 10 sites within the Goulburn-Murray Water catchments, Victoria, Australia during a dry year (2009-2010) and a wet year (2010-2011). Our results showed that the AMs accumulated all the five metals. Cd, Pb, Hg were detected during the wet year but below detection limits during the dry year. At some sites close to orchards, vine yards and farming areas, elevated levels of Cu were clearly evident during the dry year, while elevated levels of Zn were found during the wet year; the Cu indicates localized inputs from the agricultural application of copper fungicide. The impacts from old mines were significantly less compared 'hot spots'. Our study demonstrated that climate variability (dry, wet years) can influence the metal inputs to waterways via different transport pathways. Using the AMs, we were able to identify various 'hot spots' of heavy metals, which may pose a potential risk to aquatic ecosystems (sub-lethal effects to fish) and public (via food chain metal bioaccumulation and biomagnification) in the Goulburn-Murray Water catchments. The State Protection Policy exempted artificial channels and drains from protection of beneficial use (including protection of aquatic ecosystems) and majority of sites ('hot spots') were located within artificial irrigation channels.

  9. Honey Bee Apis mellifera Parasites in the Absence of Nosema ceranae Fungi and Varroa destructor Mites

    PubMed Central

    Shutler, Dave; Head, Krista; Burgher-MacLellan, Karen L.; Colwell, Megan J.; Levitt, Abby L.; Ostiguy, Nancy; Williams, Geoffrey R.

    2014-01-01

    Few areas of the world have western honey bee (Apis mellifera) colonies that are free of invasive parasites Nosema ceranae (fungi) and Varroa destructor (mites). Particularly detrimental is V. destructor; in addition to feeding on host haemolymph, these mites are important vectors of several viruses that are further implicated as contributors to honey bee mortality around the world. Thus, the biogeography and attendant consequences of viral communities in the absence of V. destructor are of significant interest. The island of Newfoundland, Province of Newfoundland and Labrador, Canada, is free of V. destructor; the absence of N. ceranae has not been confirmed. Of 55 Newfoundland colonies inspected visually for their strength and six signs of disease, only K-wing had prevalence above 5% (40/55 colonies = 72.7%). Similar to an earlier study, screenings again confirmed the absence of V. destructor, small hive beetles Aethina tumida (Murray), tracheal mites Acarapis woodi (Rennie), and Tropilaelaps spp. ectoparasitic mites. Of a subset of 23 colonies screened molecularly for viruses, none had Israeli acute paralysis virus, Kashmir bee virus, or sacbrood virus. Sixteen of 23 colonies (70.0%) were positive for black queen cell virus, and 21 (91.3%) had some evidence for deformed wing virus. No N. ceranae was detected in molecular screens of 55 colonies, although it is possible extremely low intensity infections exist; the more familiar N. apis was found in 53 colonies (96.4%). Under these conditions, K-wing was associated (positively) with colony strength; however, viruses and N. apis were not. Furthermore, black queen cell virus was positively and negatively associated with K-wing and deformed wing virus, respectively. Newfoundland honey bee colonies are thus free of several invasive parasites that plague operations in other parts of the world, and they provide a unique research arena to study independent pathology of the parasites that are present. PMID:24955834

  10. Honey bee Apis mellifera parasites in the absence of Nosema ceranae fungi and Varroa destructor mites.

    PubMed

    Shutler, Dave; Head, Krista; Burgher-MacLellan, Karen L; Colwell, Megan J; Levitt, Abby L; Ostiguy, Nancy; Williams, Geoffrey R

    2014-01-01

    Few areas of the world have western honey bee (Apis mellifera) colonies that are free of invasive parasites Nosema ceranae (fungi) and Varroa destructor (mites). Particularly detrimental is V. destructor; in addition to feeding on host haemolymph, these mites are important vectors of several viruses that are further implicated as contributors to honey bee mortality around the world. Thus, the biogeography and attendant consequences of viral communities in the absence of V. destructor are of significant interest. The island of Newfoundland, Province of Newfoundland and Labrador, Canada, is free of V. destructor; the absence of N. ceranae has not been confirmed. Of 55 Newfoundland colonies inspected visually for their strength and six signs of disease, only K-wing had prevalence above 5% (40/55 colonies = 72.7%). Similar to an earlier study, screenings again confirmed the absence of V. destructor, small hive beetles Aethina tumida (Murray), tracheal mites Acarapis woodi (Rennie), and Tropilaelaps spp. ectoparasitic mites. Of a subset of 23 colonies screened molecularly for viruses, none had Israeli acute paralysis virus, Kashmir bee virus, or sacbrood virus. Sixteen of 23 colonies (70.0%) were positive for black queen cell virus, and 21 (91.3%) had some evidence for deformed wing virus. No N. ceranae was detected in molecular screens of 55 colonies, although it is possible extremely low intensity infections exist; the more familiar N. apis was found in 53 colonies (96.4%). Under these conditions, K-wing was associated (positively) with colony strength; however, viruses and N. apis were not. Furthermore, black queen cell virus was positively and negatively associated with K-wing and deformed wing virus, respectively. Newfoundland honey bee colonies are thus free of several invasive parasites that plague operations in other parts of the world, and they provide a unique research arena to study independent pathology of the parasites that are present.

  11. Reflections upon an "Atheist Epic": Madalyn Murray O'Hair and "Baltimore Sun" Reporters Comment about Coverage of the First Incidents Leading to the Supreme Court's Banning of Compulsory Prayer in Public Schools.

    ERIC Educational Resources Information Center

    Bowman, Jim; Kahan, Bob

    In 1960 a teenage boy, Bill Murray, refused to participate in Bible reading, and the result was a series of court cases that culminated in the 1963 United States Supreme Court decision banning compulsory prayer in public schools. To gain insight into the dynamics of journalism practiced during controversy, a case study attempts to examine the…

  12. Climate change and environmental water reallocation in the Murray-Darling Basin: Impacts on flows, diversions and economic returns to irrigation

    NASA Astrophysics Data System (ADS)

    Kirby, J. M.; Connor, J.; Ahmad, M. D.; Gao, L.; Mainuddin, M.

    2014-10-01

    Increasing river environment degradation from historical growth in withdrawal is leading to reallocation of water from irrigation in many basins. We examine how potential reduction in irrigation allocations under a newly enacted environmental water plan for the Murray Darling Basin in Australia, in combination with projected climate change, impact on flows, diversions and the economic returns to irrigation. We use an integrated hydrology-economics model capable of simulating the year-to-year variability of flows, diversions, and economic returns to model three levels of reallocation (2400, 2750 and 3200 GL) under the historical climate, and under a dry, a median and a wet climate change projection. Previous assessments of the reallocation plan do not address climate change impacts, nor the impact of year to year variability in flows on economic returns. The broad results of this analysis are that estimated river flows and diversions are more sensitive to the range of climate change projections than to the range of diversion reallocation scenarios considered. The projected median climate change more or less removes from flows the gains to the environment resulting from reallocation. Reallocations only in combination with no climate change, or climate change at the wetter end of the range of projections, will lead to flows greater than those experienced under the water management regime prior to reallocation. The reduction in economic returns to irrigation is less than the reduction in water available for irrigation: a 25% reduction in the annual average water availability is estimated to reduce the annual average gross value of irrigated agricultural production by about 10%. This is consistent with expectation of economic theory (since more marginal activities are reduced first) and also with observations of reduced water availability and returns in the recent drought in the Murray-Darling Basin. Irrigation returns vary less across the range of climate change

  13. Identification of Putative Nuclear Receptors and Steroidogenic Enzymes in Murray-Darling Rainbowfish (Melanotaenia fluviatilis) Using RNA-Seq and De Novo Transcriptome Assembly.

    PubMed

    Bain, Peter A; Papanicolaou, Alexie; Kumar, Anupama

    2015-01-01

    Murray-Darling rainbowfish (Melanotaenia fluviatilis [Castelnau, 1878]; Atheriniformes: Melanotaeniidae) is a small-bodied teleost currently under development in Australasia as a test species for aquatic toxicological studies. To date, efforts towards the development of molecular biomarkers of contaminant exposure have been hindered by the lack of available sequence data. To address this, we sequenced messenger RNA from brain, liver and gonads of mature male and female fish and generated a high-quality draft transcriptome using a de novo assembly approach. 149,742 clusters of putative transcripts were obtained, encompassing 43,841 non-redundant protein-coding regions. Deduced amino acid sequences were annotated by functional inference based on similarity with sequences from manually curated protein sequence databases. The draft assembly contained protein-coding regions homologous to 95.7% of the complete cohort of predicted proteins from the taxonomically related species, Oryzias latipes (Japanese medaka). The mean length of rainbowfish protein-coding sequences relative to their medaka homologues was 92.1%, indicating that despite the limited number of tissues sampled a large proportion of the total expected number of protein-coding genes was captured in the study. Because of our interest in the effects of environmental contaminants on endocrine pathways, we manually curated subsets of coding regions for putative nuclear receptors and steroidogenic enzymes in the rainbowfish transcriptome, revealing 61 candidate nuclear receptors encompassing all known subfamilies, and 41 putative steroidogenic enzymes representing all major steroidogenic enzymes occurring in teleosts. The transcriptome presented here will be a valuable resource for researchers interested in biomarker development, protein structure and function, and contaminant-response genomics in Murray-Darling rainbowfish.

  14. Identification of Putative Nuclear Receptors and Steroidogenic Enzymes in Murray-Darling Rainbowfish (Melanotaenia fluviatilis) Using RNA-Seq and De Novo Transcriptome Assembly

    PubMed Central

    Bain, Peter A.; Papanicolaou, Alexie; Kumar, Anupama

    2015-01-01

    Murray-Darling rainbowfish (Melanotaenia fluviatilis [Castelnau, 1878]; Atheriniformes: Melanotaeniidae) is a small-bodied teleost currently under development in Australasia as a test species for aquatic toxicological studies. To date, efforts towards the development of molecular biomarkers of contaminant exposure have been hindered by the lack of available sequence data. To address this, we sequenced messenger RNA from brain, liver and gonads of mature male and female fish and generated a high-quality draft transcriptome using a de novo assembly approach. 149,742 clusters of putative transcripts were obtained, encompassing 43,841 non-redundant protein-coding regions. Deduced amino acid sequences were annotated by functional inference based on similarity with sequences from manually curated protein sequence databases. The draft assembly contained protein-coding regions homologous to 95.7% of the complete cohort of predicted proteins from the taxonomically related species, Oryzias latipes (Japanese medaka). The mean length of rainbowfish protein-coding sequences relative to their medaka homologues was 92.1%, indicating that despite the limited number of tissues sampled a large proportion of the total expected number of protein-coding genes was captured in the study. Because of our interest in the effects of environmental contaminants on endocrine pathways, we manually curated subsets of coding regions for putative nuclear receptors and steroidogenic enzymes in the rainbowfish transcriptome, revealing 61 candidate nuclear receptors encompassing all known subfamilies, and 41 putative steroidogenic enzymes representing all major steroidogenic enzymes occurring in teleosts. The transcriptome presented here will be a valuable resource for researchers interested in biomarker development, protein structure and function, and contaminant-response genomics in Murray-Darling rainbowfish. PMID:26599404

  15. Distribution of Total Dissolved Solids in McMurray Formation Water in the Athabasca Oil Sands Region, Alberta, Canada: Implications for Oil Sands Mining and In Situ Resource Development

    NASA Astrophysics Data System (ADS)

    Cowie, B.; Mayer, B.

    2013-12-01

    Saline water management is a significant environmental challenge for mining and in-situ resource development in the Athabasca oil sands region (AOSR), Alberta, Canada. In the AOSR, the Cretaceous aged McMurray formation that bears the majority of the oil sands resources is underlain by saline Devonian formations containing saline water. Vertical connectivity between Devonian and Cretaceous aquifer systems has been uncovered by mining operations in the AOSR over the past several years, inducing occasional and local saline water flow into mining areas. The observed upward flow of groundwater from Devonian to Cretaceous systems necessitates detailed characterization of the spatial extent of high salinity formation waters to improve water management decisions in the AOSR. This study used published data from recent government reports and Environmental Impact Assessments to map total dissolved solids (TDS) of 355 McMurray formation water samples across the Athabasca oil sands region (54 to 58° N and 110 to 114° W). McMurray formation waters varied from non-saline (TDS < 4 000 mg/L) to brine (TDS > 100 000 mg/L) with a locally high salinity formation waters trending parallel to the dissolution edge of the Devonian-aged Prairie evaporite formation across the AOSR. The simplest hydrogeological explanation for the observed formation water salinity data is that Devonian aquifers are locally connected to the McMurray formation via conduits in the sub-Cretaceous karst system in the region overlying the partial dissolution edge of the Prairie evaporite formation. The driving force for upward formation water flow was provided by the Pleistocene glaciation events that reversed the regional flow system in the Devonian strata over the past 2 Ma. This study demonstrates that a detailed approach to hydrogeological assessment is required to elucidate total dissolved solids concentrations in McMurray formation waters at an individual lease-area scale, and to manage potential impacts

  16. Multispectral Evidence of Alteration from Murray Ridge to Marathon Valley Observed by the Opportunity Pancam on the Rim of Endeavour Crater, Mars

    NASA Technical Reports Server (NTRS)

    Farrand, W. H.; Mittlefehldt, D. W.; Bell, J. F.; Johnson, J. R.

    2015-01-01

    The Mars Exploration Rover Opportunity has been traversing the rim of the Noachian-aged, 22 km diameter Endeavour crater. Circa sol 3390 of its mission, Opportunity reached the northern tip of the rim segment known as Solander Point and has since been traversing the rim to the south to its current location at the break in the rim known as Marathon Valley. The rocks making up the rim are dominated by impact breccias consisting of clasts and a finer-grained matrix. Several segments of the rim are transected by fractures as observed from orbital HiRISE imagery. Pancam multispectral observations of outcrop in these fracture regions, including part of the rim crest dubbed Murray Ridge, the Hueytown fracture, and Marathon Valley have been made. Over the range of 430 to 1010 nm there are changes in the multispectral reflectance signature of the breccia matrix with an increase in 535 nm and 904 nm band depth. This is attributed to oxidation and an increase in ferric oxides in these areas. In situ observations by the rover's APXS also indicate chemical differences associated with the matrix along these fractures, including increasing Fe/Mn southward from Solander Point to a region having an Al-OH signature in CRISM spectra, and generally higher SO3 in the Hueytown fracture region and the area around Spirit of St. Louis. Overturned rocks observed on Murray Ridge were determined by the APXS to have elevated Mn and Pancam spectra of the high Mn spots have a characteristic red, featureless slope. This spectrum was also observed in association with some coatings on blocks of the sulfate-rich Grasberg formation. Spectra resembling red hematite are observed in some zones in association with the craterform feature Spirit of St. Louis outside the mouth (to the west) of Marathon Valley. Marathon Valley itself has been observed from orbital hyperspectral observations by the CRISM sensor to host occurrences of Fe/Mg smectite minerals- indicating extensive aqueous alteration in this

  17. The role of stakeholders in Murray-Darling Basin water management: How do irrigators make water use decisions and how can this influence water policy?

    NASA Astrophysics Data System (ADS)

    Douglas, E. M.; Wheeler, S. A.; Smith, D. J.; Gray, S.; Overton, I. C.; Crossman, N. D.; Doody, T.

    2014-12-01

    Water stress and overallocation are at the forefront of water management and policy challenges in Australia, especially in the Murray Darling Basin (MDB). Farmland within the MDB generates 40 percent of Australia's total agricultural production and utilizes 60 percent of all irrigation water withdrawn nationally. The Murray Darling Basin Plan, drafted in 2008 and enacted in November 2012, has at its core the establishment of environmentally sustainable diversion limits based on a threshold of water extraction which, if exceeded, would cause harm to key environmental assets in the MDB. The overall goal of the Plan is to balance economic, social and environmental outcomes within the Basin. Because irrigated agriculture is the major water user in the MDB, it is important to understand the factors that influence irrigation water use. We applied a mental modeling approach to assessing farmer water use decisions. The approach allowed us to solicit and document farmer insights into the multifaceted nature of irrigation water use decisions in the MDB. Following are a few insights gained from the workshops: 1) For both environmental and economic reasons, irrigators in the MDB have become experts in water use and water efficiency. Water managers and government officials could benefit by partnering with farmers and incorporating this expertise into water management decisions. 2) Irrigators in the MDB may have been misperceived when it comes to accepting policy change. Many, if not most, of the farmers we talked to understood the need for, or at least the inevitability of, governmental policies and regulations. But a lack of accountability and predictability has added to the uncertainty in farming decisions. 3) Irrigators in the MDB subscribe to the concept of environmental sustainability, although they might not always agree with how the concept is implemented. Farmers should be recognized for their significant investments in the long-term sustainability of their farms and

  18. Murray Valley encephalitis in an adult traveller complicated by long-term flaccid paralysis: case report and review of the literature.

    PubMed

    Douglas, Mark W; Stephens, Dianne P; Burrow, James N C; Anstey, Nicholas M; Talbot, Kevin; Currie, Bart J

    2007-03-01

    Murray Valley encephalitis (MVE) virus, a mosquito-borne flavivirus, is the most common cause of viral encephalitis in the tropical 'Top End' of northern Australia. Clinical encephalitis due to MVE virus has a mortality rate of approximately 30%, with a similar proportion of patients being left with significant neurological deficits. We report the case of a 25-year-old man from the UK who acquired MVE while travelling through northern Australia. He required prolonged admission to the Intensive Care Unit and several years later remains partly ventilator-dependent, with flaccid quadriparesis. To our knowledge, this is the first reported case of MVE virus-induced flaccid paralysis in an adult in northern Australia, although it is well described in children. Paralysis was thought to be due to anterior horn cell involvement in the spinal cord and extensive bilateral thalamic destruction, both of which are well recognised complications of infection with MVE virus. Cases of flaccid paralysis with similar pathology have been described following infection with the related flavivirus Japanese encephalitis virus as well as more recently with West Nile virus. Our case highlights the potential severity of flavivirus-induced encephalitis and the importance of avoiding mosquito bites while travelling through endemic areas.

  19. Efficacy of bath and orally administered praziquantel and fenbendazole against Lepidotrema bidyana Murray, a monogenean parasite of silver perch, Bidyanus bidyanus (Mitchell).

    PubMed

    Forwood, J M; Harris, J O; Deveney, M R

    2013-11-01

    We investigated the efficacy of praziquantel (PZQ) and fenbendazole (FBZ), each administered by bath and orally, against the monogenean Lepidotrema bidyana Murray, a gill parasite of the freshwater fish silver perch, Bidyanus bidyanus (Mitchell). PZQ and FBZ were each administered by bath at 10 mg L⁻¹ for 48 h and on surface-coated feed pellets at 75 mg kg⁻¹ per body weight (BW) per day for 6 days. Bath treatments of PZQ and FBZ had an efficacy of 99% and 91%, respectively, against adult L. bidyana. Oral treatments of PZQ and FBZ had an efficacy of 79% and 95%, respectively, against adult L. bidyana. Fish rejected feed pellets surface-coated with PZQ, suggesting that palatability of surface-coated PZQ-medicated feed is poor, which undermined efficacy. In all trials, some juvenile parasites were present on fish after treatment during efficacy assessment, indicating that efficacy may be lower against juvenile parasites or that recruitment occurred post-treatment, demonstrating that repeat treatments are necessary to effectively control L. bidyana in aquaculture. PMID:23488766

  20. Drought, floods and water quality: Drivers of a severe hypoxic blackwater event in a major river system (the southern Murray-Darling Basin, Australia)

    NASA Astrophysics Data System (ADS)

    Whitworth, Kerry L.; Baldwin, Darren S.; Kerr, Janice L.

    2012-07-01

    SummaryHypoxic blackwater events are characterised by high levels of dissolved organic carbon in the water column, the metabolism of which depletes dissolved oxygen, which can cause fish and crustacean mortality. Understanding the drivers of and controls on hypoxic blackwater events is important in order to reduce the potential for detrimental water quality impacts from both managed and natural flows. After a decade-long drought in south-eastern Australia, a series of spring and summer flood events in 2010-2011 resulted in a large-scale hypoxic blackwater event in the southern Murray-Darling Basin that affected over 2000 km of river channels and persisted for 6 months. We examined the biogeochemistry and hydrology underpinning this extreme event and found that multiple drivers contributed to the development and persistence of hypoxic blackwater. Inundation of both forested and agricultural floodplains that had not been flooded for over a decade mobilised large stores of reactive carbon. Altered flow seasonality, due to a combination of climatic effects and river regulation, not only increased the risk of hypoxic blackwater generation but also shifted the proportion of bioavailable carbon that was returned to the river channels. Hypolimnetic weir discharge also contributed to hypoxia at some sites. These findings highlight the need for a whole-of-system perspective for the management of regulated river systems - especially in the face of a changing climate.

  1. Efficacy of bath and orally administered praziquantel and fenbendazole against Lepidotrema bidyana Murray, a monogenean parasite of silver perch, Bidyanus bidyanus (Mitchell).

    PubMed

    Forwood, J M; Harris, J O; Deveney, M R

    2013-11-01

    We investigated the efficacy of praziquantel (PZQ) and fenbendazole (FBZ), each administered by bath and orally, against the monogenean Lepidotrema bidyana Murray, a gill parasite of the freshwater fish silver perch, Bidyanus bidyanus (Mitchell). PZQ and FBZ were each administered by bath at 10 mg L⁻¹ for 48 h and on surface-coated feed pellets at 75 mg kg⁻¹ per body weight (BW) per day for 6 days. Bath treatments of PZQ and FBZ had an efficacy of 99% and 91%, respectively, against adult L. bidyana. Oral treatments of PZQ and FBZ had an efficacy of 79% and 95%, respectively, against adult L. bidyana. Fish rejected feed pellets surface-coated with PZQ, suggesting that palatability of surface-coated PZQ-medicated feed is poor, which undermined efficacy. In all trials, some juvenile parasites were present on fish after treatment during efficacy assessment, indicating that efficacy may be lower against juvenile parasites or that recruitment occurred post-treatment, demonstrating that repeat treatments are necessary to effectively control L. bidyana in aquaculture.

  2. Desalination of oil sands process-affected water and basal depressurization water in Fort McMurray, Alberta, Canada: application of electrodialysis.

    PubMed

    Kim, Eun-Sik; Dong, Shimiao; Liu, Yang; Gamal El-Din, Mohamed

    2013-01-01

    The high content of inorganic species in water used to extract bitumen from the Alberta oil sands and in the groundwater below the oil sands is an increasing environmental concern. These water matrices require treatment before they can be reused or safely discharged. Desalination of the oil sands process-affected water (OSPW) and groundwater, or basal depressurization water (BDW), can be accomplished with deionization techniques such as electrodialysis (ED). In order to achieve the effective ED treatment, OSPW and BDW were pretreated with coagulation-flocculation-sedimentation to remove solid species and turbidity. We demonstrated that a conductivity range for industrial reuse of OSPW and BDW can be achieved with the ED treatment and showed the possibility of applying ED in the oil sands industry. A continuous ED system that reuses the diluate stream as a source for the concentrate stream was designed. The cost of a hypothetical ED water treatment plant in Fort McMurray, Alberta, was estimated to be C$10.71 per cubic meter of treated water.

  3. An application of spatially constrained inversion using FD Helicopter EM data to characterise spatial variations in groundwater salinity across the floodplains of the Murray River in South-eastern Australia

    NASA Astrophysics Data System (ADS)

    Munday, T. J.; Viezzoli, A.; Fitzpatrick, A.

    2008-12-01

    The floodplains of the Murray River, situated in the southeast of Australia, have become extensively salinised, related in part to the discharge of naturally saline groundwater linked to increased recharge from land clearing and irrigation adjacent to the river. This problem has been compounded by extended drought conditions that prevail across the Murray Basin, resulting in increase in the accumulation and concentration of salt within the floodplain soils and an increase in salt loads to the river. Consequently in many floodplain areas along the Murray, the native riparian vegetation communities are in severe decline and Eucalyptus largiflorens (Black Box) and E. camaldulensis (Red Gum) communities are being significantly affected. A range management strategies are being employed to manage these issues, the manipulation of river flows to enhance biodiversity values (ie restore vegetation health) and the development of a hydro-dynamic models to better understand surface flows and the role of soils and elevation in floodplain vegetation health. Integral to these strategies is the acquisition of detailed spatial data on the distribution of salinity in floodplain soils and groundwater, thereby indicating patterns of groundwater evapotranspiration and baseflow across these areas. Hydrogeophysical data from electrical (inductive) methods have considerable potential to provide such data. We present an application of the Spatially Constrained Inversion (SCI) of RESOLVE FDHEM (airborne EM) data for defining spatial patterns of salinisation in the sunraysia irrigation area located in the lower Murray Basin of South Australia. Spatially Constrained Inversion uses Delaunay triangulation to set three dimensional constraints between neighbouring soundings, taking advantage of the spatial coherency that may be present in the data set. Conductivity information for individual soundings is linked through the spatial constraints, from well determined parameters to locally poorly

  4. Quantifying water requirements of riparian river red gum (Eucalyptus camaldulensis) in the Murray-Darling Basin, Australia: Implications for the management of environmental flows

    USGS Publications Warehouse

    Doody, Tanya M.; Colloff, Matthew J.; Davies, Micah; Koul, Vijay; Benyon, Richard G.; Nagler, Pamela L.

    2015-01-01

    Water resource development and drought have altered river flow regimes, increasing average flood return intervals across floodplains in the Murray-Darling Basin, Australia, causing health declines in riparian river red gum (Eucalyptus camaldulensis) forests and woodlands. Environmental flow allocations helped to alleviate water stress during the recent Millennium Drought (1997–2010), however, quantification of the flood frequency required to support healthy E. camaldulensis communities is still needed. We quantified water requirements of E. camaldulensis for two years across a flood gradient (trees inundated at frequencies of 1:2, 1:5 and 1:10 years) at Yanga National Park, New South Wales to help inform management decision-making and design of environmental flows. Sap flow, evaporative losses and soil moisture measurements were used to determine transpiration, evapotranspiration and plant-available soil water before and after flooding. A formula was developed using plant-available soil water post-flooding and average annual rainfall, to estimate maintenance time of soil water reserves in each flood frequency zone. Results indicated that soil water reserves could sustain 1:2 and 1:5 trees for 15 months and six years, respectively. Trees regulated their transpiration rates, allowing them to persist within their flood frequency zone, and showed reduction in active sapwood area and transpiration rates when flood frequencies exceeded 1:2 years. A leaf area index of 0.5 was identified as a potential threshold indicator of severe drought stress. Our results suggest environmental water managers may have greater flexibility to adaptively manage floodplains in order to sustain E. camaldulensis forests and woodlands than has been appreciated hitherto.

  5. A paleoclimate rainfall reconstruction in the Murray-Darling Basin (MDB), Australia: 1. Evaluation of different paleoclimate archives, rainfall networks, and reconstruction techniques

    NASA Astrophysics Data System (ADS)

    Ho, Michelle; Kiem, Anthony S.; Verdon-Kidd, Danielle C.

    2015-10-01

    From ˜1997 to 2009 the Murray-Darling Basin (MDB), Australia's largest water catchment and reputed "food bowl," experienced a severe drought termed the "Millennium Drought" or "Big Dry" followed by devastating floods in the austral summers of 2010/2011, 2011/2012, and 2012/2013. The magnitude and severity of these extreme events highlight the limitations associated with assessing hydroclimatic risk based on relatively short instrumental records (˜100 years). An option for extending hydroclimatic records is through the use of paleoclimate records. However, there are few in situ proxies of rainfall or streamflow suitable for assessing hydroclimatic risk in Australia and none are available in the MDB. In this paper, available paleoclimate records are reviewed and those of suitable quality for hydroclimatic risk assessments are used to develop preinstrumental information for the MDB. Three different paleoclimate reconstruction techniques are assessed using two instrumental rainfall networks: (1) corresponding to rainfall at locations where rainfall-sensitive Australian paleoclimate archives currently exist and (2) corresponding to rainfall at locations identified as being optimal for explaining MDB rainfall variability. It is shown that the optimized rainfall network results in a more accurate model of MDB rainfall compared to reconstructions based on rainfall at locations where paleoclimate rainfall proxies currently exist. This highlights the importance of first identifying key locations where existing and as yet unrealized paleoclimate records will be most useful in characterizing variability. These results give crucial insight as to where future investment and research into developing paleoclimate proxies for Australia could be most beneficial, with respect to better understanding instrumental, preinstrumental and potential future variability in the MDB.

  6. Wide-area estimates of evapotranspiration by red gum (Eucalyptus camaldulensis) and associated vegetation in the Murray-Darling River Basin, Australia

    USGS Publications Warehouse

    Nagler, Pamela L.; Doody, Tanya M.; Glenn, Edward P.; Jarchow, Christopher J; Barreto-Munoz, Armando; Didan, Kamel

    2016-01-01

    Floodplain red gum forests (Eucalyptus camaldulensis plus associated grasses, reeds and sedges) are sites of high biodiversity in otherwise arid regions of southeastern Australia. They depend on periodic floods from rivers, but dams and diversions have reduced flood frequencies and volumes, leading to deterioration of trees and associated biota. There is a need to determine their water requirements so environmental flows can be administered to maintain or restore the forests. Their water requirements include the frequency and extent of overbank flooding, which recharges the floodplain soils with water, as well as the actual amount of water consumed in evapotranspiration (ET). We estimated the flooding requirements and ET for a 38 134 ha area of red gum forest fed by the Murrumbidgee River in Yanga National Park, New South Wales. ET was estimated by three methods: sap flux sensors placed in individual trees; a remote sensing method based on the Enhanced Vegetation Index from MODIS satellite imagery and a water balance method based on differences between river flows into and out of the forest. The methods gave comparable estimates yet covered different spatial and temporal scales. We estimated flood frequency and volume requirements by comparing Normalized Difference Vegetation Index values from Landsat images with flood history from 1995 to 2014, which included both wet periods and dry periods. ET during wet years is about 50% of potential ET but is much less in dry years because of the trees' ability to control stomatal conductance. Based on our analyses plus other studies, red gum trees at this location require environmental flows of 2000 GL yr−1 every other year, with peak flows of 20 000 ML d−1, to produce flooding sufficient to keep them in good condition. However, only about 120–200 GL yr−1 of river water is consumed in ET, with the remainder flowing out of the forest where it enters the Murray River system.

  7. In vitro nuclear receptor activity and in vivo gene expression analysis in Murray-Darling rainbowfish (Melanotaenia fluviatilis) after short-term exposure to fluoxetine.

    PubMed

    Bain, Peter A; Basheer, V S; Gregg, Adrienne; Jena, J K; Kumar, Anu

    2016-10-01

    Fluoxetine (FLX) is one of numerous pharmaceuticals found in treated municipal wastewater discharged to the environment. In the present study, we investigated the effects of short-term (96h) waterborne FLX exposure (1μg/L or 100μg/L) on the expression of selected genes in brain, liver, and gonads of female Murray-Darling rainbowfish (Melanotaenia fluviatilis), a small-bodied teleost of ecotoxicological relevance in the Australasia region. Plasma 17β-estradiol (E2) levels were also determined. In the brain, no significant changes in mRNA levels were observed for the selected genes. In ovaries, 100μg/L FLX caused a 10-fold downregulation of aromatase A (cyp19a1a) mRNA and a 4-fold upregulation of estrogen receptor α (esr1) mRNA levels. In liver, mRNA levels for vitellogenin A (vtga) and choriogenin L (chgl) were downregulated by 50-fold and 18-fold compared with controls, respectively, in response to 100μg/L FLX. Concentrations of E2 in plasma were significantly lower than controls in response to 100μg/L FLX. This could be attributable to a decrease in estrogen biosynthesis as a result of the observed downregulation of cyp19a1a mRNA. To establish whether the observed changes in gene expression could be explained by the modulation of selected nuclear receptors by FLX, we employed panel of reporter gene assays in agonistic and antagonistic modes. Apart from minor activation of ERα after exposure to high concentrations (5μM), FLX did not activate or inhibit the nuclear receptors tested. Further study is required to determine whether the observed downregulation of ovarian aromatase expression and liver estrogen-regulated genes also occurs at environmentally relevant FLX concentrations over longer exposure periods. PMID:27235599

  8. Understanding the role of farm dams in the Murray-Darling Basin in Australia through hydrological analysis coupled with stakeholder interviews

    NASA Astrophysics Data System (ADS)

    Kuil, Linda; Winnubst, Madelinde; van Dijk, Albert

    2013-04-01

    Climate predictions suggest that surface water availability in the Murray-Darling Basin (MDB) in Australia is more likely to decline than to increase in the next decades. In 2000, farm dams were first recognized as a significant risk to future flows in the MDB and have since been the subject of hydrological research. This study was conducted to provide insight into the role of farm dams in the Yass catchment, which is a subcatchment of the MDB close to Canberra, in order to indentify obstacles for integrated water management. The role of farm dams was investigated from both a hydrological and social perspective. Model prediction and data inference were used to estimate the impact of farm dams on streamflow. The density of farm dams in the catchment was estimated at 5.7 dams km-2. The impact on the Yass River was simulated to be in the order of 20 percent of mean annual streamflow. To understand why farm dams are used, semi-structured interviews were conducted to capture views and opinions of land holders. Research found that farm dams play a very important role in terms of individuals' water supply, although other systems are also used. Furthermore, land holders are responsible for their own water supply for drinking and agricultural water needs. Water rights are based on a right to rainfall or groundwater that is present on an individual's property. This means that landholders have both a need and a right to collect and store runoff. Current legislation put in place by the New South Wales government to restrict the amount of rain water to be captured does not seem to affect most people. If additional policy to minimize the impact of farm dams on streamflow were to be introduced, this has to be based on well-thought-out arguments based on a long term vision as the interview results indicate that farm dams are deeply embedded in Australian rural culture.

  9. Benchmarking Passive Seismic Methods of Imaging Surface Wave Velocity Interfaces Down to 300 m — Mapping Murray Basin Thickness in Southeastern Australia

    NASA Astrophysics Data System (ADS)

    Gorbatov, A.; Czarnota, K.

    2015-12-01

    In shallow passive seismology it is generally thought that the spatial autocorrelation (SPAC) method is more robust than the horizontal over vertical spectral ratio (HVSR) method at resolving the depth to surface-wave velocity (Vs) interfaces. Here we present results of a field test of these two methods over ten drill sites in Victoria, Australia. The target interface is the base of Cenozoic unconsolidated to semi-consolidated clastic and/or carbonate sediments of the Murray Basin, which overlie Paleozoic crystalline rocks. Drilled depths of this interface are between 27 and 300 m. A three-arm spiral array, with a radius of 250 m, consisting of 13 Trillium compact broadband seismometers was deployed at each site for 7-21 hours. The Vs architecture beneath each site was determined through nonlinear inversion of HVSR and SPAC data using the neighborhood algorithm of Sambridge (1999) implemented in geopsy by Wathelet et al (2005). The HVSR technique yielded depth estimates, of the target interface (Vs > 1000 m/s), generally within 20% error. Successful estimates were even obtained at a site with an inverted velocity profile, where Quaternary basalts overlie Neogene sediments. Half of the SPAC estimates showed significantly higher errors than obtained using HVSR. Joint inversion provided the most reliable estimates but was unstable at three sites. We attribute the surprising success of HVSR over SPAC to a low content of transient signals within the seismic record caused by low degrees of anthropogenic noise at the benchmark sites. At a few sites SPAC curves showed clear overtones suggesting that more reliable SPAC estimates maybe obtained utilizing a multi modal inversion. Nevertheless, our study seems to indicate that reliable basin thickness estimates in remote Australia can be obtained utilizing HVSR data from a single seismometer, without a priori knowledge of the surface-wave velocity of the basin material, thereby negating the need to deploy cumbersome arrays.

  10. A paleoclimate rainfall reconstruction in the Murray-Darling Basin (MDB), Australia: 2. Assessing hydroclimatic risk using paleoclimate records of wet and dry epochs

    NASA Astrophysics Data System (ADS)

    Ho, Michelle; Kiem, Anthony S.; Verdon-Kidd, Danielle C.

    2015-10-01

    Estimates of hydrological risk are crucial to enable adequate planning and preparation for extreme events. However, the accurate estimation of hydrological risk is hampered by relatively short instrumental records in many parts of the world. Information derived from climate-sensitive paleoclimate proxies provide an opportunity to resolve hydroclimatic variability, but many regions, such as Australia's Murray-Darling Basin (MDB), currently lack the suitable in situ proxies necessary to do this. Here new MDB rainfall reconstructions are presented based on a novel method using paleoclimate rainfall proxies in the Australasian region spanning from 749 B.C.E. to 1980 C.E. Our results emphasize the need to develop additional reconstructions and, with the companion paper, demonstrate how this information can be used to benefit water resource management. This study shows that prior to the twentieth century, both dry and wet epochs have persisted for longer periods than observed in the instrumental record—with the probability of both dry and wet periods exceeding a decade at least 10 times more likely prior to 1883 than suggested by the instrumental records. Some reconstructed rainfalls exceeded the instrumental range (i.e., drier dry epochs and wetter wet spells) despite a systematic underestimation of extremes due to a combination of proxy quality and model bias. Importantly, the results demonstrate that the instrumental record does not cover the full range of hydroclimatic variability possible in the MDB. Therefore, hydroclimatic risk assessments based on the instrumental record likely underestimate, or at least misinterpret, the frequency, duration, and magnitude of wet and dry epochs.

  11. Potential of using WATCH forcing data to model a low land river basin of the upper Murray-Darling basin in Australia

    NASA Astrophysics Data System (ADS)

    Kundu, D.; Van Ogtrop, F. F.; Vervoort, R. W.

    2014-12-01

    Scattered station based climate data is often not sufficient to describe the dynamics of the catchment processes and efficiently manage the water resources. Therefore, a lot of focus has been to identify alternative distributed data sources, such as; remotely sensed data or global re-analysis data. Hence, this study uses the Water and Global Change (WATCH) forcing data, based on 40 years ECMWF Re-Analysis (ERA-40), to model a semi-arid low land flood plain river basin in a data sparse region. The semi-distributed Soil Water Assessment Tool (SWAT) was used to model the river basin (Warrego, 52140.6 square km) located in the upper Murray-Darling basin in Eastern Australia. Multi station model calibration was achieved using the Sequential Uncertainty Fitting -2 (SUFI-2) algorithm with the Nash Sutcliffe Efficiency (NSE) as the goal function against monthly observed flow data. Modelling of a low land river system is highly challenging, due to topographic heterogeneity, nonlinear climatic behavior and sparse observed flow data with extended periods of zero flows. Preliminary simulation results indicate a NSE of 0.26 to 0.86 for the calibration period and 0.04 to 0.47 for the validation period. Furthermore, the volume fraction explained by the model ranged from 0.69 to 2.71 in the validation period. While the unsatisfactory results may be attributed to the SWAT modelling framework, which struggles with modelling flow in flat flood plains, the study does reveal the potential to use remotely sensed data in low land river basins with little or no climate data.

  12. Estimates of evapotranspiration for riparian sites (Eucalyptus) in the Lower Murray -Darling Basin using ground validated sap flow and vegetation index scaling techniques

    NASA Astrophysics Data System (ADS)

    Doody, T.; Nagler, P. L.; Glenn, E. P.

    2014-12-01

    Water accounting is becoming critical globally, and balancing consumptive water demands with environmental water requirements is especially difficult in in arid and semi-arid regions. Within the Murray-Darling Basin (MDB) in Australia, riparian water use has not been assessed across broad scales. This study therefore aimed to apply and validate an existing U.S. riparian ecosystem evapotranspiration (ET) algorithm for the MDB river systems to assist water resource managers to quantify environmental water needs over wide ranges of niche conditions. Ground-based sap flow ET was correlated with remotely sensed predictions of ET, to provide a method to scale annual rates of water consumption by riparian vegetation over entire irrigation districts. Sap flux was measured at nine locations on the Murrumbidgee River between July 2011 and June 2012. Remotely sensed ET was calculated using a combination of local meteorological estimates of potential ET (ETo) and rainfall and MODIS Enhanced Vegetation Index (EVI) from selected 250 m resolution pixels. The sap flow data correlated well with MODIS EVI. Sap flow ranged from 0.81 mm/day to 3.60 mm/day and corresponded to a MODIS-based ET range of 1.43 mm/day to 2.42 mm/day. We found that mean ET across sites could be predicted by EVI-ETo methods with a standard error of about 20% across sites, but that ET at any given site could vary much more due to differences in aquifer and soil properties among sites. Water use was within range of that expected. We conclude that our algorithm developed for US arid land crops and riparian plants is applicable to this region of Australia. Future work includes the development of an adjusted algorithm using these sap flow validated results.

  13. Hydroclimatic projections for the Murray-Darling Basin based on an ensemble derived from Intergovernmental Panel on Climate Change AR4 climate models

    NASA Astrophysics Data System (ADS)

    Sun, Fubao; Roderick, Michael L.; Lim, Wee Ho; Farquhar, Graham D.

    2011-12-01

    We assess hydroclimatic projections for the Murray-Darling Basin (MDB) using an ensemble of 39 Intergovernmental Panel on Climate Change AR4 climate model runs based on the A1B emissions scenario. The raw model output for precipitation, P, was adjusted using a quantile-based bias correction approach. We found that the projected change, ΔP, between two 30 year periods (2070-2099 less 1970-1999) was little affected by bias correction. The range for ΔP among models was large (˜±150 mm yr-1) with all-model run and all-model ensemble averages (4.9 and -8.1 mm yr-1) near zero, against a background climatological P of ˜500 mm yr-1. We found that the time series of actually observed annual P over the MDB was indistinguishable from that generated by a purely random process. Importantly, nearly all the model runs showed similar behavior. We used these facts to develop a new approach to understanding variability in projections of ΔP. By plotting ΔP versus the variance of the time series, we could easily identify model runs with projections for ΔP that were beyond the bounds expected from purely random variations. For the MDB, we anticipate that a purely random process could lead to differences of ±57 mm yr-1 (95% confidence) between successive 30 year periods. This is equivalent to ±11% of the climatological P and translates into variations in runoff of around ±29%. This sets a baseline for gauging modeled and/or observed changes.

  14. A century scale human-induced hydrological and ecological changes of wetlands of two large river basins in Australia (Murray) and China (Yangtze): development of an adaptive water resource management framework

    NASA Astrophysics Data System (ADS)

    Kattel, G. R.; Dong, X.; Yang, X.

    2015-08-01

    Recently, the provision of food and water resources of two of the world's large river basins, the Murray and the Yangtze, has been significantly altered through widespread landscape modification. Long-term sedimentary archives, dating back to past centuries, from wetlands of these river basins reveal that rapid, basin-wide development has reduced resilience of biological communities, resulting in considerable decline in ecosystem services, including water quality. In particular, large-scale human disturbance to river systems, due to river regulation during the mid-20th century, has transformed the hydrology of rivers and wetlands, causing widespread disturbance to aquatic biological communities. Historical changes of cladoceran zooplankton (water fleas) were used to assess the hydrology and ecology of three Murray and Yangtze River wetlands over the past century. Subfossil assemblages of cladocerans retrieved from sediment cores (94, 45 and 65 cm) of three wetlands: Kings Billabong (Murray), Zhangdu and Liangzi Lakes (Yangtze) strongly responded to hydrological changes of the river after the mid-20th century. River regulation caused by construction of dams and weirs, and river channel modifications has led to hydrological alterations. The hydrological disturbances were either: (1) a prolonged inundation of wetlands, or (2) reduced river flow, which caused variability in wetland depth. These phenomena subsequently transformed the natural wetland habitats, leading to a switch in cladoceran assemblages preferring poor water quality and eutrophication. An adaptive water resource management framework for both of these river basins has been proposed to restore or optimize the conditions of wetland ecosystems impacted by 20th century human disturbance and climate change.

  15. Does anti-androgen, flutamide cancel out the in vivo effects of the androgen, dihydrotestosterone on sexual development in juvenile Murray rainbowfish (Melanotaenia fluviatilis)?

    PubMed

    Bhatia, Harpreet; Kumar, Anupama

    2016-01-01

    The aim of the present study was to investigate if the effects of the androgen, dihydrotestosterone (DHT) on the sexual development in juvenile Murray rainbowfish (Melanotaenia fluviatilis) are canceled out by the anti-androgen, flutamide. Fish (60 days post hatch) were exposed to 250ng/L of DHT, 25μg/L of flutamide (Flu-low), 250μg/L of flutamide (Flu-high), DHT+Flu low and DHT+Flu high. After 35 days of exposure, lengths and weights of the fish were measured and the condition factor (CF) calculated; vitellogenin (VTG) concentrations were measured in tail tissue; sex steroid hormones (17β-estradiol [E2] and 11-keto testosterone [11-KT]) were measured in the head tissue and abdominal regions were used in histological investigation of the gonads. Treatment with DHT reduced the body-length of both male and female fish, an effect which was canceled out by low and high concentrations of flutamide. However, flutamide (low or high) could not nullify the DHT-induced reduction in the CF in either sex. The E2 levels were reduced only in female fish after exposure to DHT but returned to normal after treatment with Flu-high. DHT increased the levels of 11-KT and decreased the E2/11-KT ratio in both sexes. Flu-high, but not Flu-low, could nullify these effects. Both DHT and flutamide (low or high) induced VTG production and this effect persisted when both chemicals were co-administered. Treatment with DHT did not affect gonadal cell development in the testes. However, the female fish treated with DHT contained ovaries in early-vitellogenic stage in comparison to the pre-vitellogenic ovaries in control fish. Co-treatment with flutamide (low or high) resulted in oocyte atresia. The results from the present study suggest that treatment with Flu-high could cancel out DHT-induced effects only on the hormonal profile and body-length in both male and female fish. Juvenile fish co-treated with DHT and flutamide (low or high) had high VTG levels and low CF. In addition, the ovaries

  16. Changes in acidity and metal geochemistry in soils, groundwater, drain and river water in the Lower Murray River after a severe drought.

    PubMed

    Mosley, Luke M; Fitzpatrick, Rob W; Palmer, David; Leyden, Emily; Shand, Paul

    2014-07-01

    Acid sulfate soils with sulfuric material (pH<4) can have significant impacts on surface water quality and aquatic ecosystems due to low pH and high soluble metal concentrations in runoff and drainage discharges. There has been limited research on the complex geochemical transformations that occur along flow pathways from the soil acidity source to receiving waters. We studied the integrated geochemistry of metals in acid sulfate soils with sulfuric material, groundwater, drain and river water in the Lower Murray River (South Australia) over a 2 year period. The oxidation of an estimated 3500 ha of acid sulfate soils with sulfidic material (pH>4) underlying this former floodplain occurred due to falling river and groundwater levels during the 2006-2010 extreme "millennium" drought. A low pH (<4.5) soil layer was found approximately 1-2.5m below ground level with substantial amounts (up to 0.2 mol H(+)/kg dry weight) of available/soluble acidity and retained acidity in the form of the Fe oxyhydroxy sulfate mineral jarosite. The jarosite appears to be dissolving over time and buffering the sub-surface soil layers at pH≈4. Metal (Fe, Al, Mn) and metalloid (As) lability was greatly increased in the acidic soil layer. Highly acidic and metal rich groundwater (median pH 4.3, Fe, Al, Mn of 0.04-0.52 mmol/L) was observed at the same depths as the acidic soil layers. Nearly all of the dissolved Fe in the groundwater was present as Fe(2+). In the drains, increases in pH and redox potential promoted formation of the Fe oxyhydroxysulfate mineral schwertmannite. This mineral precipitation transferred a portion of the dissolved acidity to the drain sediments. Upon discharge to, and dilution of, the acid drainage in the river, pH neutralisation and rapid oxidation, hydrolysis, and precipitation of solid Al and Fe phases occurred in a localised area. Acidity is persisting (>3 years) following a return to pre-drought water levels.

  17. MurrayEpscorSummary.pdf

    SciTech Connect

    Michael Murray

    2009-09-11

    We studied the angular dependence of the quark matter produced at the relativistic heavy ion collidor. The strongly coupled quark gluon plasma extends over a large range of rapidity, i.e. polar angle but becomes cooler at forward angles. There is a linear relationship between the chemical potentials of the strange and light quarks. The properties of the system vary slowly as the volume is increase by a factor of 20. EPSCoR funding has allowed the University of Kansas group to become internationally competitive.

  18. Social encapsulation of beetle parasites by Cape honeybee colonies (Apis mellifera capensis Esch.)

    NASA Astrophysics Data System (ADS)

    Neumann, P.; Pirk, C. W. W.; Hepburn, H. R.; Solbrig, A. J.; Ratnieks, F. L. W.; Elzen, P. J.; Baxter, J. R.

    2001-05-01

    Worker honeybees (Apis mellifera capensis) encapsulate the small hive beetle (Aethina tumida), a nest parasite, in propolis (tree resin collected by the bees). The encapsulation process lasts 1-4 days and the bees have a sophisticated guarding strategy for limiting the escape of beetles during encapsulation. Some encapsulated beetles died (4.9%) and a few escaped (1.6%). Encapsulation has probably evolved because the small hive beetle cannot easily be killed by the bees due to its hard exoskeleton and defensive behaviour.

  19. The molecular epidemiology of iridovirus in Murray cod (Maccullochella peelii peelii) and dwarf gourami (Colisa lalia) from distant biogeographical regions suggests a link between trade in ornamental fish and emerging iridoviral diseases.

    PubMed

    Go, Jeffrey; Lancaster, Malcolm; Deece, Kylie; Dhungyel, Om; Whittington, Richard

    2006-01-01

    Iridoviruses have emerged over 20 years to cause epizootics in finfish and amphibians in many countries. They may have originated in tropical Asia and spread through trade in farmed food fish or ornamental fish, but this has been difficult to prove. Consequently, MCP, ATPase and other viral genes were sequenced from archival formalin-fixed, paraffin-embedded tissues from farmed Murray cod (Maccullochella peelii peelii) that died during an epizootic in 2003 and from diseased gouramis that had been imported from Asia. There was almost complete homology (99.95%) over 4,527 bp between Murray cod iridovirus (MCIV) and an iridovirus (DGIV) present in dwarf gourami (Colisa lalia) that had died in aquarium shops in Australia in 2004, and very high homology with infectious spleen and kidney necrosis virus (ISKNV) (99.9%). These viruses are most likely to be a single species within the genus Megalocytivirus and probably have a common geographic origin. Primers for genus-specific PCR and for rapid discrimination of MCIV/DGIV/ISKNV and red sea bream iridovirus (RSIV), a notifiable pathogen, were developed. These were used in a survey to determine that the prevalence of DGIV infection in diseased gourami in retail aquarium shops in Sydney was 22% (95% confidence limits 15-31%). The global trade in ornamental fish may facilitate the spread of Megalocytivirus and enable emergence of disease in new host species in distant biogeographic regions.

  20. Spatial and temporal dynamic of flooding and vegetation response to flooding using remotely sensed data in the Murray -Darling Basin, Australia

    NASA Astrophysics Data System (ADS)

    Tulbure, Mirela; Kingsford, Richard; Broich, Mark

    2013-04-01

    Australia is the driest inhabited continent and river systems have highly variable flows in space and time. The Murray-Darling Basin (MDB), a catchment covering 14% of the continent contains the nation's largest rivers and important groundwater systems. The basin has highly variable rainfall patterns in space and time and is home to several wetlands of high hydrological and ecological value. However, variation in surface and ground water availability exacerbated by a long period of drought, combined with high water demands for irrigation, human use, and ecosystem health led to the need of managing water resources in an integrated fashion. Flushes of water, stored in dams, are being released during dry periods as environmental flows. Assessment of water resources and understanding of the effectiveness of environmental flows requires knowledge of long term trends in occurrence and extent of surface water and vegetation response to flooding and environmental flows. Satellite remote sensing is the only viable way for synoptically mapping and monitoring the extent and dynamic of flooding and vegetation response to flooding. Recent La Nina -induced extreme flooding broke a decade long of drought and made 2010 the wettest calendar year on record in the MDB. This represents a unique opportunity to develop predictive models relating flow regime to vegetation response and identify trends over long term and across a large space in a drying yet highly variable climate. Using an internally consistent method, Landsat TM and ETM+ data were used to synoptically map the extent and dynamic of surface water bodies and track the response of vegetation communities to flooding in space and time at Barmah-Millewa, the largest river red gum forest in the world and one of the icon sites in the MDB. Per pixel trajectory of surface water and vegetation index time series were used. Results show high interannual variability in number and size of flooded areas and a strong relationship with

  1. Recognition of strong seasonality and climatic cyclicity in an ancient, fluvially dominated, tidally influenced point bar: Middle McMurray Formation, Lower Steepbank River, north-eastern Alberta, Canada

    NASA Astrophysics Data System (ADS)

    Jablonski, Bryce V. J.; Dalrymple, Robert W.

    2016-04-01

    Inclined heterolithic stratification in the Lower Cretaceous McMurray Formation, exposed along the Steepbank River in north-eastern Alberta, Canada, accumulated on point bars of a 30 to 40 m deep continental-scale river in the fluvial-marine transition. This inclined heterolithic stratification consists of two alternating lithologies, sand and fine-grained beds. Sand beds were deposited rapidly by unidirectional currents and contain little or no bioturbation. Fine-grained beds contain rare tidal structures, and are intensely bioturbated by low-diversity ichnofossil assemblages. The alternations between the sand and fine-grained beds are probably caused by strong variations in fluvial discharge; that are believed to be seasonal (probably annual) in duration. The sand beds accumulated during river floods, under fluvially dominated conditions when the water was fresh, whereas the fine-grained beds accumulated during the late stages of the river flood and deposition continued under tidally influenced brackish-water conditions during times of low-river flow (i.e. the interflood periods). These changes reflect the annual migration in the positions of the tidal and salinity limits within the fluvial-marine transition that result from changes in river discharge. Sand and fine-grained beds are cyclically organized in the studied outcrops forming metre-scale cycles. A single metre-scale cycle is defined by a sharp base, an upward decrease in sand-bed thickness and upward increases in the preservation of fine-grained beds and the intensity of bioturbation. Metre-scale cycles are interpreted to be the product of a longer term (decadal) cyclicity in fluvial discharge, probably caused by fluctuations in ocean or solar dynamics. The volumetric dominance of river-flood deposits within the succession suggests that accumulation occurred in a relatively landward position within the fluvial-marine transition. This study shows that careful observation can reveal much about the

  2. Herrnstein and Murray, Inc. "IQs 'R Us."

    ERIC Educational Resources Information Center

    Lieberman, Leonard

    1995-01-01

    Maintains that even a cursory reading of "The Bell Curve" reveals a skewed methodology that deliberately ignores relevant data. Includes statistical tables illustrating the relationship between environmental factors and test scores. Contends that the basic purpose of "The Bell Curve" is to justify economic racism. (MJP)

  3. The alternative Pharaoh approach: stingless bees mummify beetle parasites alive

    NASA Astrophysics Data System (ADS)

    Greco, Mark K.; Hoffmann, Dorothee; Dollin, Anne; Duncan, Michael; Spooner-Hart, Robert; Neumann, Peter

    2010-03-01

    Workers from social insect colonies use different defence strategies to combat invaders. Nevertheless, some parasitic species are able to bypass colony defences. In particular, some beetle nest invaders cannot be killed or removed by workers of social bees, thus creating the need for alternative social defence strategies to ensure colony survival. Here we show, using diagnostic radioentomology, that stingless bee workers ( Trigona carbonaria) immediately mummify invading adult small hive beetles ( Aethina tumida) alive by coating them with a mixture of resin, wax and mud, thereby preventing severe damage to the colony. In sharp contrast to the responses of honeybee and bumblebee colonies, the rapid live mummification strategy of T. carbonaria effectively prevents beetle advancements and removes their ability to reproduce. The convergent evolution of mummification in stingless bees and encapsulation in honeybees is another striking example of co-evolution between insect societies and their parasites.

  4. The alternative Pharaoh approach: stingless bees mummify beetle parasites alive.

    PubMed

    Greco, Mark K; Hoffmann, Dorothee; Dollin, Anne; Duncan, Michael; Spooner-Hart, Robert; Neumann, Peter

    2010-03-01

    Workers from social insect colonies use different defence strategies to combat invaders. Nevertheless, some parasitic species are able to bypass colony defences. In particular, some beetle nest invaders cannot be killed or removed by workers of social bees, thus creating the need for alternative social defence strategies to ensure colony survival. Here we show, using diagnostic radioentomology, that stingless bee workers (Trigona carbonaria) immediately mummify invading adult small hive beetles (Aethina tumida) alive by coating them with a mixture of resin, wax and mud, thereby preventing severe damage to the colony. In sharp contrast to the responses of honeybee and bumblebee colonies, the rapid live mummification strategy of T. carbonaria effectively prevents beetle advancements and removes their ability to reproduce. The convergent evolution of mummification in stingless bees and encapsulation in honeybees is another striking example of co-evolution between insect societies and their parasites.

  5. Description of Anaerobacterium chartisolvens gen. nov., sp. nov., an obligately anaerobic bacterium from Clostridium rRNA cluster III isolated from soil of a Japanese rice field, and reclassification of Bacteroides cellulosolvens Murray et al. 1984 as Pseudobacteroides cellulosolvens gen. nov., comb. nov.

    PubMed

    Horino, Haruka; Fujita, Takashi; Tonouchi, Akio

    2014-04-01

    An obligately anaerobic bacterial strain designated T-1-35(T) was isolated as a dominant cultivable cellulose-degrading bacterium from soil of a Japanese rice field as an anaerobic filter-paper degrader. Cells of strain T-1-35(T) stained Gram-positive and were non-spore-forming rods with rounded ends, 0.8-1.0×3.5-15.0 µm, and motile by means of two to four polar flagella. Cells of strain T-1-35(T) exhibited pleomorphism: in aged cultures (over 90 days of incubation), almost all cells were irregularly shaped. Although no spore formation was observed, cells tolerated high temperatures, up to 90 °C for 10 min. The temperature range for growth was 15-40 °C, with an optimum at 35 °C. The pH range for growth was 5.5-9.0, with an optimum at pH 8.0-8.5 (slightly alkaliphilic). Strain T-1-35(T) fermented some carbohydrates to produce ethanol and lactate as the major products. Major cellular fatty acids were iso-C16 : 0 and iso-C13 : 0 3-OH. Phylogenetic analysis based on the 16S rRNA gene sequence revealed that strain T-1-35(T) belonged to Clostridium rRNA cluster III. The closest relative of strain T-1-35(T) was Bacteroides cellulosolvens WM2(T), with 16S rRNA gene sequence similarity of 93.4 %. Phenotypic, physiological and molecular genetic methods demonstrated that strain T-1-35(T) was distinct from its phylogenetic relatives (members of Clostridium rRNA cluster III) because it predominantly produced ethanol, iso-C13 : 0 3-OH was a major cellular fatty acid and it always exhibited pleomorphism. On the basis of the results of a polyphasic taxonomic study, strain T-1-35(T) is considered to represent a novel genus and species, Anaerobacterium chartisolvens gen. nov., sp. nov. The type strain of Anaerobacterium chartisolvens is T-1-35(T) ( = DSM 27016(T) = NBRC 109520(T)). In addition, from the results of our phylogenetic analysis and its phenotypic features, the species Bacteroides cellulosolvens Murray et al. 1984 is proposed to be reclassified

  6. Hydrogeology of the Chickasaw National Recreation Area, Murray County, Oklahoma

    USGS Publications Warehouse

    Hanson, Ronald L.; Cates, Steven W.

    1994-01-01

    The Travertine District (Park) of the Chickasaw National Recreation Area, operated and maintained by the National Park Service, is near the City of Sulphur in south-central Oklahoma. The Park was established in 1902 because of its unique hydrologic setting, which includes Rock Creek, Travertine Creek, numerous mineralized and freshwater springs, and a dense cover of riparian vegetation. Since the turn of the century several flowing artesian wells have been drilled within and adjacent to the Park. Discharge from many of these springs and the numbers of flowing wells have declined substantially during the past 86 years. To determine the cause of these declines, a better understanding of the hydrologic system must be obtained. The U.S. Geological Survey, in cooperation with the National Park Service, has appraised hydrologic information obtained for the Park from several studies conducted during 1902-87. The principal geologic units referred to in this report are the Arbuckle Group and the overlying Simpson Group. These rocks are of Upper Cambrian to Middle Ordovician age and are composed of dolomitic limestone, with some sandstones and shales in the Simpson Group. Surface geologic maps give a general understanding of the regional subsurface geology, but information about the subsurface geology within the Park is poor. The Simpson and Arbuckle aquifers are the principal aquifers in the study area. The two aquifers are not differentiated readily in some parts of the study area because of the similarity of the Simpson and Arbuckle rocks; thus, both water-bearing units are referred to frequently as the Arbuckle-Simpson aquifer. The aquifers are confined under the Park, but are unconfined east and south of the Park. Precipitation on the outcrop area of the Arbuckle aquifer northeast and east of the Park recharges the freshwater springs (Antelope and Buffalo Springs) near the east boundary of the Park. The source of water from mineralized springs located in the central part of the Park, and flowing wells within and north of the Park, is believed to be a mix of waters from rocks of the Arbuckle and Simpson Groups. The source of water from two highly mineralized springs, Bromide and Medicine, that ceased to flow in the early 1970?s is believed to be from the Simpson Group. Water-quality characteristics reflect the sources of ground water in the study area. The highly mineralized springs near the western end of the Park are a sodium chloride type with dissolved solids greater than 4,500 mg/L. The freshwater springs near the eastern end of the Park are a calcium bicarbonate type with total dissolved solids of less than 400 mg/L. Flow from the artesian wells has declined substantially during the past 86 years and the wells are estimated to currently discharge only about 10 percent of the total flow reported in 1939. The depletion is believed to be caused by a gradual lowering of the hydraulic head within the aquifer. The influence on the hydrologic system of local municipal and industrial pumping from the Arbuckle-Simpson aquifer is difficult to discern because the system is much more sensitive to precipitation than to pumpage. Ground-water levels and spring flows in this region respond rapidly to precipitation. The effects of withdrawals from the City of Sulphur and Oklahoma Gas and Electric Company power-plant water-well fields are not discernible at wells and springs. The hydrologic system may be influenced by pumping, particularly during extended dry periods of several years, but the impact of pumping on the system cannot be determined without further investigation.

  7. Geologic map of Chickasaw National Recreation Area, Murray County, Oklahoma

    USGS Publications Warehouse

    Blome, Charles D.; Lidke, David J.; Wahl, Ronald R.; Golab, James A.

    2013-01-01

    This 1:24,000-scale geologic map is a compilation of previous geologic maps and new geologic mapping of areas in and around Chickasaw National Recreation Area. The geologic map includes revisions of numerous unit contacts and faults and a number of previously “undifferentiated” rock units were subdivided in some areas. Numerous circular-shaped hills in and around Chickasaw National Recreation Area are probably the result of karst-related collapse and may represent the erosional remnants of large, exhumed sinkholes. Geospatial registration of existing, smaller scale (1:72,000- and 1:100,000-scale) geologic maps of the area and construction of an accurate Geographic Information System (GIS) database preceded 2 years of fieldwork wherein previously mapped geology (unit contacts and faults) was verified and new geologic mapping was carried out. The geologic map of Chickasaw National Recreation Area and this pamphlet include information pertaining to how the geologic units and structural features in the map area relate to the formation of the northern Arbuckle Mountains and its Arbuckle-Simpson aquifer. The development of an accurate geospatial GIS database and the use of a handheld computer in the field greatly increased both the accuracy and efficiency in producing the 1:24,000-scale geologic map.

  8. Multitrophic interaction facilitates parasite–host relationship between an invasive beetle and the honey bee

    PubMed Central

    Torto, Baldwyn; Boucias, Drion G.; Arbogast, Richard T.; Tumlinson, James H.; Teal, Peter E. A.

    2007-01-01

    Colony defense by honey bees, Apis mellifera, is associated with stinging and mass attack, fueled by the release of alarm pheromones. Thus, alarm pheromones are critically important to survival of honey bee colonies. Here we report that in the parasitic relationship between the European honey bee and the small hive beetle, Aethina tumida, the honey bee's alarm pheromones serve a negative function because they are potent attractants for the beetle. Furthermore, we discovered that the beetles from both Africa and the United States vector a strain of Kodamaea ohmeri yeast, which produces these same honey bee alarm pheromones when grown on pollen in hives. The beetle is not a pest of African honey bees because African bees have evolved effective methods to mitigate beetle infestation. However, European honey bees, faced with disease and pest management stresses different from those experienced by African bees, are unable to effectively inhibit beetle infestation. Therefore, the environment of the European honey bee colony provides optimal conditions to promote the unique bee–beetle–yeast–pollen multitrophic interaction that facilitates effective infestation of hives at the expense of the European honey bee. PMID:17483478

  9. Characterization of Biocontrol Traits in Heterorhabditis floridensis: A Species with Broad Temperature Tolerance

    PubMed Central

    Shapiro-Ilan, David I.; Blackburn, Dana; Duncan, Larry; El-Borai, Fahiem E.; Koppenhöfer, Heather; Tailliez, Patrick; Adams, Byron J.

    2014-01-01

    Biological characteristics of two strains of the entomopathogenic nematode, Heterorhabditis floridensis (332 isolated in Florida and K22 isolated in Georgia) were described. The identity of the nematode’s symbiotic bacteria was elucidated and found to be Photorhabdus luminescens subsp. luminescens. Beneficial traits pertinent to biocontrol (environmental tolerance and virulence) were characterized. The range of temperature tolerance in the H. floridensis strains was broad and showed a high level of heat tolerance. The H. floridensis strains caused higher mortality or infection in G. mellonella at 30°C and 35°C compared with S. riobrave (355), a strain widely known to be heat tolerant, and the H. floridensis strains were also capable of infecting at 17°C whereas S. riobrave (355) was not. However, at higher temperatures (37°C and 39°C), though H. floridensis readily infected G. mellonella, S. riobrave strains caused higher levels of mortality. Desiccation tolerance in H. floridensis was similar to Heterorhabditis indica (Hom1) and S. riobrave (355) and superior to S. feltiae (SN). H. bacteriophora (Oswego) and S. carpocapsae (All) exhibited higher desiccation tolerance than the H. floridensis strains. The virulence of H. floridensis to four insect pests (Aethina tumida, Conotrachelus nenuphar, Diaprepes abbreviatus, and Tenebrio molitor) was determined relative to seven other nematodes: H. bacteriophora (Oswego), H. indica (Hom1), S. carpocapsae (All), S. feltiae (SN), S. glaseri (4-8 and Vs strains), and S. riobrave (355). Virulence to A. tumida was similar among the H. floridensis strains and other nematodes except S. glaseri (Vs), S. feltiae, and S. riobrave failed to cause higher mortality than the control. Only H. bacteriophora, H. indica, S. feltiae, S. riobrave, and S. glaseri (4-8) caused higher mortality than the control in C. nenuphar. All nematodes were pathogenic to D. abbreviatus though S. glaseri (4-8) and S. riobrave (355) were the most

  10. Characterization of Biocontrol Traits in Heterorhabditis floridensis: A Species with Broad Temperature Tolerance.

    PubMed

    Shapiro-Ilan, David I; Blackburn, Dana; Duncan, Larry; El-Borai, Fahiem E; Koppenhöfer, Heather; Tailliez, Patrick; Adams, Byron J

    2014-12-01

    Biological characteristics of two strains of the entomopathogenic nematode, Heterorhabditis floridensis (332 isolated in Florida and K22 isolated in Georgia) were described. The identity of the nematode's symbiotic bacteria was elucidated and found to be Photorhabdus luminescens subsp. luminescens. Beneficial traits pertinent to biocontrol (environmental tolerance and virulence) were characterized. The range of temperature tolerance in the H. floridensis strains was broad and showed a high level of heat tolerance. The H. floridensis strains caused higher mortality or infection in G. mellonella at 30°C and 35°C compared with S. riobrave (355), a strain widely known to be heat tolerant, and the H. floridensis strains were also capable of infecting at 17°C whereas S. riobrave (355) was not. However, at higher temperatures (37°C and 39°C), though H. floridensis readily infected G. mellonella, S. riobrave strains caused higher levels of mortality. Desiccation tolerance in H. floridensis was similar to Heterorhabditis indica (Hom1) and S. riobrave (355) and superior to S. feltiae (SN). H. bacteriophora (Oswego) and S. carpocapsae (All) exhibited higher desiccation tolerance than the H. floridensis strains. The virulence of H. floridensis to four insect pests (Aethina tumida, Conotrachelus nenuphar, Diaprepes abbreviatus, and Tenebrio molitor) was determined relative to seven other nematodes: H. bacteriophora (Oswego), H. indica (Hom1), S. carpocapsae (All), S. feltiae (SN), S. glaseri (4-8 and Vs strains), and S. riobrave (355). Virulence to A. tumida was similar among the H. floridensis strains and other nematodes except S. glaseri (Vs), S. feltiae, and S. riobrave failed to cause higher mortality than the control. Only H. bacteriophora, H. indica, S. feltiae, S. riobrave, and S. glaseri (4-8) caused higher mortality than the control in C. nenuphar. All nematodes were pathogenic to D. abbreviatus though S. glaseri (4-8) and S. riobrave (355) were the most virulent

  11. The ovary structure, previtellogenic and vitellogenic stages in parthenogenetic species Dactylobiotus dispar (Murray, 1907) (Tardigrada: Eutardigrada).

    PubMed

    Poprawa, Izabela

    2005-10-01

    The reproductive system of Dactylobiotus dispar consists of the ovary and the oviduct that opens into the rectum. The sack-like ovary is filled with the developing oocytes, which are assisted by the trophocytes. In D. dispar, the mixed vitellogenesis takes place. One part of the yolk material is produced inside the oocyte (autosynthesis), the second part is absorbed by micropinocytosis while the third part is synthesized in the trophocytes and is transported to the oocytes through the cytoplasmatic bridges. Moreover, rRNA, lipids and mitochondria are transfered from the trophocytes to the oocytes. The histochemical researches show that the reserve material accumulated in the oocytes contains proteins, polysaccharides and lipids.

  12. 33 CFR 110.72c - Lake Murray, S.C.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... foot pier of the Columbia Sailing Club, approximately latitude 34°03′51″ N., longitude 81°13′37″ W.; thence 167° to latitude 34°03′43.6″ N., longitude 81°13′39.2″ W.; thence easterly to latitude 34°03′45″...

  13. Acidification and buffering mechanisms in acid sulfate soil wetlands of the Murray-Darling Basin, Australia.

    PubMed

    Glover, Fiona; Whitworth, Kerry L; Kappen, Peter; Baldwin, Darren S; Rees, Gavin N; Webb, John A; Silvester, Ewen

    2011-04-01

    The acid generation mechanisms and neutralizing capacities of sulfidic sediments from two inland wetlands have been studied in order to understand the response of these types of systems to drying events. The two systems show vastly different responses to oxidation, with one (Bottle Bend (BB) lagoon) having virtually no acid neutralizing capacity (ANC) and the other (Psyche Bend (PB) lagoon) an ANC that is an order of magnitude greater than the acid generation potential. While BB strongly acidifies during oxidation the free acid generation is less than that expected from the measured proton production and consumption processes, with additional proton consumption attributed to the formation of an acid-anion (chloride) FeIII (oxyhydr)oxide product, similar to akaganéite (Fe(OH)2.7Cl0.3). While such products can partially attenuate the acidification of these systems, resilience to acidification is primarily imparted by sediment ANC. PMID:21375259

  14. Hydrology and Water Quality near Bromide Pavilion in Chickasaw National Recreation Area, Murray County, Oklahoma, 2000

    USGS Publications Warehouse

    Andrews, William J.; Burrough, Steven P.

    2002-01-01

    The Bromide Pavilion in Chickasaw National Recreation Area drew many thousands of people annually to drink the mineral-rich waters piped from nearby Bromide and Medicine Springs. Periodic detection of fecal coliform bacteria in water piped to the pavilion from the springs, low yields of the springs, or flooding by adjacent Rock Creek prompted National Park Service officials to discontinue piping of the springs to the pavilion in the 1970s. Park officials would like to resume piping mineralized spring water to the pavilion to restore it as a visitor attraction, but they are concerned about the ability of the springs to provide sufficient quantities of potable water. Pumping and sampling of Bromide and Medicine Springs and Rock Creek six times during 2000 indicate that these springs may not provide sufficient water for Bromide Pavilion to supply large numbers of visitors. A potential problem with piping water from Medicine Spring is the presence of an undercut, overhanging cliff composed of conglomerate, which may collapse. Evidence of intermittent inundation of the springs by Rock Creek and seepage of surface water into the spring vaults from the adjoining creek pose a threat of contamination of the springs. Escherichia coli, fecal coliform, and fecal streptococcal bacteria were detected in some samples from the springs, indicating possible fecal contamination. Cysts of Giardia lamblia and oocysts of Cryptosporidium parvum protozoa were not detected in the creek or the springs. Total culturable enteric viruses were detected in only one water sample taken from Rock Creek.

  15. The Challenges of Primary Sources, Collaboration, and the K-16 Elizabeth Murray Project

    ERIC Educational Resources Information Center

    Cleary, Patricia; Neumann, David

    2009-01-01

    In recent years, the use of primary sources in the history and social studies classroom has been increasingly promoted as a necessary and welcome practice, one designed to improve the quality of history education and to encourage student interest and engagement. Although some K-12 educators have been wary of adopting the use of primary sources,…

  16. 33 CFR 110.72c - Lake Murray, S.C.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... foot pier of the Columbia Sailing Club, approximately latitude 34°03′51″ N., longitude 81°13′37″ W.; thence 167° to latitude 34°03′43.6″ N., longitude 81°13′39.2″ W.; thence easterly to latitude 34°03′45″ N., longitude 81°13′32.1″ W.; thence 347° to the shoreline, thence along the shoreline to the beginning....

  17. 33 CFR 110.72c - Lake Murray, S.C.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... foot pier of the Columbia Sailing Club, approximately latitude 34°03′51″ N., longitude 81°13′37″ W.; thence 167° to latitude 34°03′43.6″ N., longitude 81°13′39.2″ W.; thence easterly to latitude 34°03′45″ N., longitude 81°13′32.1″ W.; thence 347° to the shoreline, thence along the shoreline to the beginning....

  18. Cell division and endoreduplication play important roles in stem swelling of tuber mustard (Brassica juncea Coss. var. tumida Tsen et Lee).

    PubMed

    Shi, H; Wang, L L; Sun, L T; Dong, L L; Liu, B; Chen, L P

    2012-11-01

    We investigated spatio-temporal variations in cell division and the occurrence of endoreduplication in cells of tuber mustard stems during development. Cells in the stem had 8C nuclei (C represents DNA content of a two haploid genome), since it is an allotetraploid species derived from diploid Brassica rapa (AA) and B. nigra (BB), thus indicating the occurrence of endoreduplication. Additionally, we observed a dynamic change of cell ploidy in different regions of the swollen stems, with a decrease in 4C proportion in P4-1 and a sharp increase in 8C cells that became the dominant cell type (86.33% at most) in the inner pith cells. Furthermore, cDNAs of 14 cell cycle genes and four cell expansion genes were cloned and their spatial transcripts analysed in order to understand their roles in stem development. The expression of most cell cycle genes peaked in regions of the outer pith (P2 or P3), some genes regulating S/G2 and G2/M (BjCDKB1;2, BjCYCB1;1 and BjCYCB1;2) significantly decrease in P5 and P6, while G1/S regulators (BjE2Fa, BjE2Fb and BjE2Fc) showed a relative high expression level in the inner pith (P5) where cells were undergoing endoreduplication. Coincidentally, BjXTH1and BjXTH2 were exclusively expressed in the endoreduplicated cells. Our results suggest that cells of outer pith regions (P2 and P3) mainly divide for cell proliferation, while cells of the inner pith expand through endoreduplication. Endoreduplication could trigger expression of BjXTH1 and BjXTH2 and thus function in cell expansion of the pith tissue.

  19. Cell division and endoreduplication play important roles in stem swelling of tuber mustard (Brassica juncea Coss. var. tumida Tsen et Lee).

    PubMed

    Shi, H; Wang, L L; Sun, L T; Dong, L L; Liu, B; Chen, L P

    2012-11-01

    We investigated spatio-temporal variations in cell division and the occurrence of endoreduplication in cells of tuber mustard stems during development. Cells in the stem had 8C nuclei (C represents DNA content of a two haploid genome), since it is an allotetraploid species derived from diploid Brassica rapa (AA) and B. nigra (BB), thus indicating the occurrence of endoreduplication. Additionally, we observed a dynamic change of cell ploidy in different regions of the swollen stems, with a decrease in 4C proportion in P4-1 and a sharp increase in 8C cells that became the dominant cell type (86.33% at most) in the inner pith cells. Furthermore, cDNAs of 14 cell cycle genes and four cell expansion genes were cloned and their spatial transcripts analysed in order to understand their roles in stem development. The expression of most cell cycle genes peaked in regions of the outer pith (P2 or P3), some genes regulating S/G2 and G2/M (BjCDKB1;2, BjCYCB1;1 and BjCYCB1;2) significantly decrease in P5 and P6, while G1/S regulators (BjE2Fa, BjE2Fb and BjE2Fc) showed a relative high expression level in the inner pith (P5) where cells were undergoing endoreduplication. Coincidentally, BjXTH1and BjXTH2 were exclusively expressed in the endoreduplicated cells. Our results suggest that cells of outer pith regions (P2 and P3) mainly divide for cell proliferation, while cells of the inner pith expand through endoreduplication. Endoreduplication could trigger expression of BjXTH1 and BjXTH2 and thus function in cell expansion of the pith tissue. PMID:22639957

  20. The structure and the formation of egg shells in the parthenogenetic species Dactylobiotus dispar Murray, 1907 (Tardigrada: Eutardigrada).

    PubMed

    Poprawa, Izabela

    2005-01-01

    The eggs of Dactylobiotus dispar, similar to other Tardigrada eggs, are covered with two shells: the vitelline envelope and the chorion. Ultrastructural studies have shown that the oocyte actively participates in the formation of both shells. The process of egg capsule formation begins at the midpoint of vitellogenesis. The chorion at first appears as isolated cones resulting from the exocytotic activity of the oocyte and the ovarian epithelium. Subsequently, connections between the cones are formed. Three layers can be distinguished in the completely developed chorion: (1) the inner layer of medium electron density; (2) the middle, labyrinthine layer; (3) the outer layer of medium electron density with cones (future conical processes). After chorion formation, a vitelline envelope is secreted by the oocyte. The Dactylobiotus dispar egg is covered with small, conical processes with hooked tips. The surface of the chorion is covered with a mesh-like network consisting of elongated interstices. The egg capsule has no micropylar opening.

  1. Spectral characteristics of iron-bearing phyllosilicates: Comparison to Orgueil (CI1), Murchison and Murray (CM2)

    USGS Publications Warehouse

    Calvin, W.M.; King, T.V.V.

    1997-01-01

    Phyllosilicate alteration minerals are commonly found in low petrologic types of carbonaceous chondrites. Previous spectral studies have examined Mg-bearing phyllosilicates with limited success in matching the spectral properties of CM and CI chondrites. Transmission electron microscope and other analytical techniques suggest that Fe-bearing clays are more abundant in CI and CM chondrites than magnesian varieties. Here, we present the results of an examination of the reflectance spectra of Fe-phyllosilicates, including serpentines and berthierines, of which the latter were formerly known as septechlorites. We have measured the diffuse reflectance spectra of powdered samples from 0.3 to 25 ??m. We find that these minerals provide a better spectral match to many of the features seen in CI and CM chondrites, and simple linear combinations of the spectra of both Fe- and Mg-phyllosilicates closely approximate the spectra of CM and CI chondrites.

  2. Learning to Be Drier in the Southern Murray-Darling Basin: Setting the Scene for This Research Volume

    ERIC Educational Resources Information Center

    Golding, Barry; Campbell, Coral

    2009-01-01

    In this article, the authors set the scene for this research volume. They sought to emphasize and broaden their interest and concern about their "Learning to be drier" theme in this edition to the 77 per cent of Australians who live within 50 km of the Australian coast, the majority of whom also live in major cities and urban complexes. On 24…

  3. To designate the facility of the United States Postal Service located at 4865 Tallmadge Road in Rootstown, Ohio, as the "Marine Sgt. Jeremy E. Murray Post Office".

    THOMAS, 112th Congress

    Rep. Ryan, Tim [D-OH-17

    2011-02-15

    02/18/2011 Referred to the Subcommittee on Federal Workforce, U.S. Postal Service, and Labor Policy . (All Actions) Notes: For further action, see S.349, which became Public Law 112-22 on 6/29/2011. Tracker: This bill has the status IntroducedHere are the steps for Status of Legislation:

  4. Ten Years of Growing Season Water, Energy and Carbon Exchange From an Oil sands Reclamation Site, Fort McMurray, Alberta

    NASA Astrophysics Data System (ADS)

    Carey, S. K.; Drewitt, G. B.

    2013-12-01

    The oil sands mining industry in Canada has made a commitment to restore disturbed areas to an equivalent capability to that which existed prior to mining. Certification requires successful reclamation, which can in part be evaluated through long-term ecosystem studies. A reclamation site, informally named South Bison Hill (SBH) has had growing season water, energy and carbon fluxes measured via the eddy covariance method for 10 years since establishment. SBH was capped with a 0.2 m peat-glacial till mixture overlying 0.8 m of reworked glacial till soil. The site was seeded to barley cultivar (Hordeum spp.) in the summer of 2002 and later planted to white spruce (Picea glauca) and aspen (Populus spp.) in the summer/fall of 2004. Since 2007, the major species atop SBH has been aspen, and by 2012 was on average ~ 4 m in height. Climatically, mean growing temperature did not vary greatly, yet there was considerable difference in rainfall among years, with 2012 having the greatest rainfall at 321 mm, whereas 2011 and 2007 were notably dry at 180 and 178 mm, respectively. The partitioning of energy varied among years, but the fraction of latent heat as a portion of net radiation increased with the establishment of aspen, along with concomitant increases in LAI and growing season net ecosystem exchange (NEE). Peat growing season ET was smallest in 2004 at 2.3 mm/d and greatest in 2010 at ~3.9 mm/d. ET rates showed a marked increase in 2008 corresponding with the increase in LAI attributed to the aspen cover. Since the establishment of a surface cover and vegetation in 2003, SBH has been a growing season sink for carbon dioxide. Values of NEE follow similar patterns to those of ET, with values gradually becoming more negative (greater carbon uptake) as the aspen forest established. Comparison with other disturbed and undisturbed boreal aspen stands show that SBH exhibits similar water, energy and carbon flux patterns during the growing season.

  5. Modelling Surface Water Dynamics (SWD) on Large River Basin Scale from Space: A Case Study for the Murray-Darling Basin (MDB) of Australia

    NASA Astrophysics Data System (ADS)

    Heimhuber, V.; Tulbure, M. G.; Broich, M.

    2015-12-01

    Globally, increasing demands on water resources along with climate variability and change have led to alarming declines and deterioration of terrestrial surface water resources. The usage of earth-observation data and techniques for modeling SWD and its drivers represents a promising approach for sustainable management and restoration of surface water resources across broad geographic regions. The main objective of this research was to model SWD with a focus on floods, observed in 25 years of Landsat imagery (1986 - 2011), across a large and highly regulated river basin, the MDB in Australia. SWD were modelled as a function of river flow and spatially explicit time-series data on soil moisture (Climate Change Initiative active passive microwave), evapotranspiration (Australian Water Resources Assessment land surface model) and rainfall (gauge-based). To enable a consistent modeling approach within the complex hydrological structure of the river basin, a unique spatial modeling framework was developed based on a fully directed and connected stream network, a categorization of the basin into floodplain and non-floodplain area and a regular grid of 10 by 10 km cells. Based on this framework, SWD on local floodplain units were successfully related to flow data from connected gauges by quantifying the lag time for each cell. Dynamic regression models of SWD were fitted locally for floodplains in each grid cell, with an average adjusted r2 above 0.7. Validation against 10 years of test data that was left out for model fitting showed that the models can predict the test data with an average r2 of 0.7, which makes them suitable for improving the ongoing management and allocation of environmental flows in the MDB. The models also revealed the relative importance of local climate conditions for SWD, with increased importance of soil moisture, evapotranspiration and rainfall in arid regions, in proximity to headwater catchments and on slow-draining floodplains.

  6. Three-dimensional mapping of salt stores in the Murray-Darling Basin, Australia. 2. Calculating landscape salt loads from airborne electromagnetic and laboratory data

    NASA Astrophysics Data System (ADS)

    Mullen, I. C.; Wilkinson, K. E.; Cresswell, R. G.; Kellett, J.

    2007-05-01

    Salt is widespread in the Australian landscape - in soil, regolith and groundwater - leading to concerns that land management practices may be putting much agricultural land and important water resources at risk of salinisation. Defining the location and nature of salt stores is an important first step in understanding the processes leading to salinity of soils, streams and groundwater resources, and predicting areas that may be at risk. Airborne geophysics can define subsurface salt stores and mobilisation pathways. Airborne electromagnetics (AEM) can map the three-dimensional conductivity structure of the landscape but does not, intrinsically, quantify the amount of salt. Salinity, moisture content, porosity and mineralogy all contribute to the electromagnetic signal, and each can vary significantly throughout the landscape. In the Lower Balonne catchment, Queensland, the relationship between AEM and the amount of salt in the landscape was quantified using laboratory analyses of pore fluids from core samples. A general statistical relationship was established between AEM conductivity and salt load (defined as the product of pore fluid salinity, porosity and moisture content)—with a significant positive correlation although data were generally widely dispersed. Comparison of calculated salt load with borehole electromagnetic logs gives insight into the factors contributing to dispersion in the AEM data. The relationship transforms bulk conductivity to salt load in 5 m layers, allowing the generation of a three-dimensional map of the salt load. This is a powerful tool for identifying areas that may require monitoring and management interventions to reduce salinity risk. An example is given of salt loads beneath an established irrigation area in the Lower Balonne catchment, Queensland.

  7. 75 FR 80844 - Agency Information Collection Activities: Proposed Collection; Comments Requested

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-23

    ... burden hours associated with this collection. If additional information is required contact: Lynn Murray...: December 20, 2010. Lynn Murray, Department Clearance Officer, PRA, United States Department of...

  8. 75 FR 79023 - Agency Information Collection Activities: Proposed Collection; Comments Requested

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-17

    ... associated with this collection. If additional information is required contact: Lynn Murray, Department..., 2010. Lynn Murray, Department Clearance Officer, PRA, United States Department of Justice. BILLING...

  9. 75 FR 79022 - Agency Information Collection Activities: Proposed Collection; Comments Requested

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-17

    ...: Lynn Murray, Department Clearance Officer, United States Department of Justice, Policy and Planning..., DC 20530. Dated: December 14, 2010. Lynn Murray, Department Clearance Officer, PRA, United...

  10. 75 FR 79020 - Agency Information Collection Activities: Proposed Collection; Comments Requested

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-17

    ... burden hours associated with this collection. If additional information is required contact: Lynn Murray...: December 14, 2010. Lynn Murray, Department Clearance Officer, PRA, United States Department of...

  11. 75 FR 80847 - Agency Information Collection Activities: Proposed Collection; Comments Requested

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-23

    ... hours associated with this collection. If additional information is required contact: Lynn Murray...: December 20, 2010. Lynn Murray, Department Clearance Officer, PRA, United States Department of...

  12. 77 FR 10560 - Agency Information Collection Activities: Proposed Collection; Comments Requested: Application...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-22

    .... If additional information is required contact: Jerri Murray, Department Clearance Officer, Policy and... NE., Room 2E-508, Washington, DC 20530. Jerri Murray, Department Clearance Officer, PRA,...

  13. 75 FR 79022 - Agency Information Collection Activities: Proposed Collection; Comments Requested

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-17

    ... is required contact: Lynn Murray, Department Clearance Officer, United States Department of Justice..., NE., Washington, DC 20530. Dated: December 14, 2010. Lynn Murray, Department Clearance Officer,...

  14. 76 FR 61383 - Agency Information Collection Activities: Revision of a Previously Approved Collection, With...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-04

    ... required contact: Jerri Murray, Department Clearance Officer, United States Department of Justice, Justice..., Washington, DC 20530. Jerri Murray, Department Clearance Officer, PRA, U.S. Department of Justice....

  15. 75 FR 79021 - Agency Information Collection Activities: Proposed Collection; Comments Requested

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-17

    ...: Lynn Murray, Department Clearance Officer, Policy and Planning Staff, Justice Management Division..., DC 20530. Dated: December 14, 2010. Lynn Murray, Department Clearance Officer, PRA, United...

  16. 75 FR 80846 - Agency Information Collection Activities: Proposed Collection; Comments Requested

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-23

    ... hours associated with this collection. If additional information is required contact: Lynn Murray...: December 20, 2010. Lynn Murray, Department Clearance Officer, PRA, United States Department of...

  17. 75 FR 80848 - Agency Information Collection Activities: Proposed Collection; Comments Requested

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-23

    ... hours associated with this collection. If additional information is required contact: Lynn Murray...: December 20, 2010. Lynn Murray, Department Clearance Officer, PRA, United States Department of...

  18. Validation of the synonymy of the teleost blenniid fish species Salarias phantasticus Boulenger 1897 and Salarias anomalus Regan 1905 with Ecsenius pulcher (Murray 1887) based on DNA barcoding and morphology.

    PubMed

    Attaran-Farimani, Gilan; Estekani, Sanaz; Springer, Victor G; Crimmen, Oliver; Johnson, G David; Baldwin, Carole C

    2016-01-01

    As currently recognized, Ecsenius pulcher includes Salarias pulcher (type material has a banded color pattern), S. anomalus (non-banded), and S. phantasticus (banded). The color patterns are not sex linked, and no other morphological features apparently distinguish the three nominal species. The recent collection of banded and non-banded specimens of Ecsenius pulcher from Iran has provided the first tissue samples for genetic analyses. Here we review the taxonomic history of E. pulcher and its included synonyms and genetically analyze tissue samples of both color patterns. Salarias anomalus is retained as a synonym of E. pulcher because DNA barcode data suggest that they represent banded and non-banded color morphs of a single species. Furthermore, the large size of the largest type specimen of S. anomalus (herein designated as the lectotype) suggests that it belongs to E. pulcher. A single non-banded specimen from Iran is genetically distinct from E. pulcher and appears to represent an undescribed species. Salarias phantasticus is retained as a synonym of E. pulcher because the primary morphological difference between the two nominal species-presence of spots on the dorsal fin in E. pulcher and absence of those spots in S. phantasticus-is not a valid taxonomic character; rather, the spots represent galls that contain the larval stages of a parasitic crustacean. As males and females of Ecsenius species have been confused in the literature, we describe and illustrate the genital regions of both and comment on possible new blenniid synapomorphies that our investigation revealed. PMID:27395917

  19. Kodamaea ohmeri (Ascomycota: Saccharomycotina) presence in commercial Bombus impatiens Cresson and feral Bombus pensylvanicus DeGeer (Hymenoptera: Apidae) colonies

    Technology Transfer Automated Retrieval System (TEKTRAN)

    In this study, eight commercial and three feral bumble bee (Bombus impatiens Cresson and Bombus pensylvanicus DeGeer respectively, Hymenoptera: Apidae) colonies were tested for the presence of Kodamaea ohmeri (Ascomycota: Saccharomycotina), a yeast known to attract small hive beetles (SHB) (Aethina ...

  20. Postural drainage

    MedlinePlus

    Chest physical therapy; CPT ... Celli BR, ZuWallack RL. Pulmonary rehabilitation. In: Mason RJ, Murray JF, Broaddus VC, et al., eds. Murray and Nadel's Textbook of Respiratory Medicine . 5th ed. Philadelphia, PA: ...

  1. 77 FR 73651 - Cascade Energy Storage, LLC; Notice of Preliminary Permit Application Accepted for Filing and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-11

    ... Administration's (BPA) existing Custer-Monroe 500-kV line, or (iii) BPA existing Murray substation, or (iv) a new... Light's transmission line and then to the BPA Murray substation; and (9) appurtenant facilities....

  2. 77 FR 14829 - Agency Information Collection Activities: Extension of a Currently Approved Collection; Comments...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-13

    ... information is required contact: Jerri Murray, Department Clearance Officer, United States Department of...., Room 2E-508, Washington, DC 20530. Jerri Murray, Department Clearance Officer, PRA, U.S. Department...

  3. 76 FR 72839 - Drawbridge Operation Regulation; City Waterway Also Known as Thea Foss Waterway, Tacoma, WA

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-28

    ... regulation governing the operation of the South 11th Street (``Murray Morgan'') Bridge across City Waterway... Tacoma has requested to place the South 11th Street ``Murray Morgan'' Bridge in the closed or down... Bridge is also known as the Murray Morgan Bridge and City Waterway is also known as Thea Foss...

  4. The New Moral Darwinism

    ERIC Educational Resources Information Center

    Rury, John L.

    1986-01-01

    Reviews "Losing Ground: American Social Policy, 1950-1980" by Charles Murray. Murray believes federal social welfare programs sap the moral fiber of poor Americans by eliminating a negative incentive for them to work at low paying jobs. Criticizes Murray's position, citing the importance of positive as well as negative incentives for working. (LHW)

  5. 77 FR 17564 - Notice of Final Federal Agency Actions on Proposed Highway in Utah

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-26

    ... proposed transportation corridor project (Cottonwood Street; 4500 South to Vine Street in Murray City, Salt... of Utah: Cottonwood Street; 4500 South to Vine Street in Murray City, Salt Lake County, project... travel distances between the planned Murray City Center District, transit stations, neighborhoods,...

  6. 77 FR 32655 - DHS Data Privacy and Integrity Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-01

    ... Security, 245 Murray Lane SW., Mail Stop 0655, Washington, DC 20528. Instructions: All submissions must... Officer, DHS Data Privacy and Integrity Advisory Committee, Department of Homeland Security, 245 Murray... Officer and Shannon Ballard, Designated Federal Officer, 245 Murray Lane SW., Mail Stop 0655,...

  7. 76 FR 41274 - Committee Name: Homeland Security Science and Technology Advisory Committee (HSSTAC)

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-13

    ... Security, 245 Murray Lane, Bldg. 410, Washington, DC 20528. Instructions: All submissions received must... Director, Science and Technology Directorate, Department of Homeland Security, 245 Murray Lane, Bldg. 410... Directorate, Department of Homeland Security, 245 Murray Lane, Bldg. 410, Washington, DC 20528,...

  8. Living in the Senses and Learning with Love--John Macmurray's Philosophy of Embodied Emotion

    ERIC Educational Resources Information Center

    MacAllister, James; Thorburn, Malcolm

    2014-01-01

    In this article we analyse the central role that the body plays in John MacMurray's account of learning to be human. As with Merleau-Ponty, MacMurray rejected mind-body dualisms and argued for the need to understand what it means to be a person. Through our analysis we highlight the key principles that characterize MacMurray's philosophy…

  9. 77 FR 17560 - Tennessee Disaster #TN-00063

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-26

    ... Buren, Warren, White, Wilson. Georgia: Catoosa, Dade, Fannin, Murray, Walker, Whitfield. Kentucky: Bell, Whitley. North Carolina: Cherokee, Graham. Virginia: Lee. The Interest Rates are: Percent For...

  10. 78 FR 75375 - Advisory Committee on the Presidential Library-Foundation Partnerships

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-11

    ...-Foundation Partnerships. The meeting will be held to discuss NARA's budget and its strategic planning process... Budget and strategic planning Adjournment Dated: December 5, 2013. Patrice Little Murray,...

  11. 47 CFR 90.614 - Segments of the 806-824/851-869 MHz band for non-border areas.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ..., Monroe, Montgomery, Morgan, Murray, Muscogee, Newton, Oconee, Oglethorpe, Paulding, Peach, Pickens..., Lawrence, Leake, Lee, Lincoln, Lowndes, Madison, Marion, Monroe, Montgomery, Neshoba, Newton,...

  12. 47 CFR 90.614 - Segments of the 806-824/851-869 MHz band for non-border areas.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ..., Monroe, Montgomery, Morgan, Murray, Muscogee, Newton, Oconee, Oglethorpe, Paulding, Peach, Pickens..., Lawrence, Leake, Lee, Lincoln, Lowndes, Madison, Marion, Monroe, Montgomery, Neshoba, Newton,...

  13. 47 CFR 90.614 - Segments of the 806-824/851-869 MHz band for non-border areas.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ..., Monroe, Montgomery, Morgan, Murray, Muscogee, Newton, Oconee, Oglethorpe, Paulding, Peach, Pickens..., Lawrence, Leake, Lee, Lincoln, Lowndes, Madison, Marion, Monroe, Montgomery, Neshoba, Newton,...

  14. 47 CFR 90.614 - Segments of the 806-824/851-869 MHz band for non-border areas.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ..., Monroe, Montgomery, Morgan, Murray, Muscogee, Newton, Oconee, Oglethorpe, Paulding, Peach, Pickens..., Lawrence, Leake, Lee, Lincoln, Lowndes, Madison, Marion, Monroe, Montgomery, Neshoba, Newton,...

  15. Why Straus's "Reanalysis" of physical tactics used by female partners is wrong: a response to "Addressing violence by female partners is vital to prevent or stop violence against women: evidence from the multisite batterer intervention evaluation," by Murray Straus, Violence Against Women, 20, 889-899.

    PubMed

    Gondolf, Edward W

    2014-12-01

    This article refutes Straus's reinterpretation of our study, "Physical Tactics of Female Partners Against Male Batterer Program Participants," drawing on our extended follow-up of batterer program participants and their partners in four cities (Gondolf, 2002). Straus claims that the rate of women's violence in the sample is "high" and asserts the need to address women's violence to reduce the men's violence, which is the opposite of our findings and interpretation. We contend that our focus on the men and women who both used tactics in the total sample addresses the research question. We elaborate why our regression analyses to "explain" the women's violence are sound, despite Straus's unsubstantiated speculations. We argue further that the evidence points to women's "violent resistance" against severe, repeated violence, and that those cases do not fit the "both victim" dyad type that Straus promotes. Moreover, they are inappropriate for couples counseling. Finally, we revisit the limitations of the Conflict Tactics Scales (CTS) as a sufficient measure of the women's experience of male violence and raise concern about the implications of Straus's claims.

  16. The Joy of No Sex

    ERIC Educational Resources Information Center

    Wasley, Paula

    2007-01-01

    This article reports on Justin F. Murray and Sarah M. Kinsella, the founders of a Harvard University student group called True Love Revolution that promotes the practical benefits of sexual abstinence until marriage and how Murray and Kinsella look forward to living the message after graduation. These "true love" revolutionaries cast chastity as a…

  17. 77 FR 69562 - Drawbridge Operation Regulation; Thea Foss Waterway Previously Known as City Waterway, Tacoma, WA

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-20

    ... Federal Register (73 FR 3316). 4. Public Meeting We do not now plan to hold a public meeting. But you may... operating schedule that governs the Murray Morgan Bridge, also known as the South 11th Street Bridge, across... the Murray Morgan Bridge. This temporary deviation will test three separate changes requested by...

  18. Sports Injuries in Youth: Surveillance Strategies. Proceedings of a Conference at the National Institutes of Health (Bethesda, MD, April 8-9, 1991).

    ERIC Educational Resources Information Center

    Centers for Disease Control (DHHS/PHS), Atlanta, GA.

    This conference was convened to develop guidelines for programs to monitor the rates and costs of youth sports injuries. Following the Preface (L. E. Shulman), Introduction (D. G. Murray), and Summary (D. G. Murray), "Subjects for Further Research or Implementation" are listed. The 19 papers presented at the conference were: (1) "Funding Sources…

  19. Schools Celebrate National Anthem Anniversary

    ERIC Educational Resources Information Center

    Music Educators Journal, 2005

    2005-01-01

    Roger Lacher, instrumental music director at Murray Middle School in Ridgecrest, California, spearheaded a celebration of the national anthem attended by a descendant of Francis Scott Key. In a press release Lacher sent to the local media, he wrote: "Murray Middle School celebrated this event. We are blessed with having the great, great, great,…

  20. 40 CFR 81.324 - Minnesota.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... X Mille Lacs County X Morrison County X Mower County X Murray County X Nicollet County X Nobles... County X Wright County X Yellow Medicine County X Minnesota—CO Designated area Designation Date 1 Type... ......do Morrison County ......do Mower County ......do Murray County ......do Nicollet......

  1. 75 FR 44094 - Update of the Federal Energy Regulatory Commission's Fees Schedule for Annual Charges for the Use...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-28

    ... Mille Lacs......... 47.08 Minnesota Morrison 47.08 Minnesota Mower 62.78 Minnesota Murray 47.08... revised to read as follows. Appendix A to Part 11--Fee Schedule for FY 2010 State County (Fee/acre/YR............ 47.08 Georgia Morgan 94.17 Georgia Murray 94.17 Georgia Muscogee 94.17 Georgia Newton 156.94...

  2. 40 CFR 81.324 - Minnesota.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... X Mille Lacs County X Morrison County X Mower County X Murray County X Nicollet County X Nobles... County X Wright County X Yellow Medicine County X Minnesota—CO Designated area Designation Date 1 Type... ......do Morrison County ......do Mower County ......do Murray County ......do Nicollet......

  3. 40 CFR 81.324 - Minnesota.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... X Mille Lacs County X Morrison County X Mower County X Murray County X Nicollet County X Nobles... County X Wright County X Yellow Medicine County X Minnesota—CO Designated area Designation Date 1 Type... ......do Morrison County ......do Mower County ......do Murray County ......do Nicollet......

  4. 76 FR 58241 - Opportunity for Designation in the Jamestown, ND; Lincoln, NE; Memphis, TN; and Sioux City, IA...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-20

    ... & Grain, McPaul, Fremont County, Iowa; and Haveman Grain, Murray, Cass County, Nebraska. Midsouth Pursuant..., Pipestone, Murray, Cottonwood, Rock, Nobles, Jackson, and Martin Counties. In Nebraska: Cedar, Dakota, Dixon... areas, in the States of Minnesota and North Dakota, are assigned to this official agency. In...

  5. 40 CFR 81.337 - Oklahoma.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... County Latimer County Love County Marshall County McIntosh County Murray County Okfuskee County Pittsburg... County Coal County Garvin County Haskell County Hughes County Johnston County Latimer County Love County... Johnston County Latimer County Love County Marshall County McIntosh County Murray County Okfuskee...

  6. The Role of Single Talker Acoustic Variation in Early Word Learning

    ERIC Educational Resources Information Center

    Galle, Marcus E.; Apfelbaum, Keith S.; McMurray, Bob

    2015-01-01

    Recent work has demonstrated that the addition of multiple talkers during habituation improves 14-month-olds' performance in the switch task (Rost & McMurray, 2009). While the authors suggest that this boost in performance is due to the increase in acoustic variability (Rost & McMurray, 2010), it is also possible that there is…

  7. 75 FR 38813 - Granting of Request for Early Termination of the Waiting Period Under the Premerger Notification...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-06

    ... Arena Resources, Inc. 20100614 G Kinder Morgan Energy Partners, L.P. G KinderHawk Field Services LLC. G KinderHawk Field Services LLC. 20100616 G Quantum Resources A1, LP. G Denbury Resources Inc. G Encore... Corporation. 20100625 G Banijay Holding S.A.S. G Jonathan B. Murray. G Bunim-Murray Productions. G M...

  8. 75 FR 32781 - Granting of Request for Early Termination of the Waiting Period Under the Premerger Notification...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-09

    ... Arena Resources, Inc. 20100614 G Kinder Morgan Energy Partners, L.P. G KinderHawk Field Services LLC. G KinderHawk Field Services LLC. 20100616 G Quantum Resources A1, L.P. G Denbury Resources Inc. G Encore... Corporation. 20100625 G Banijay Holding S.A.S. G Jonathan B. Murray. ] G Bunim-Murray Productions. G M...

  9. Metastatic pleural tumor

    MedlinePlus

    ... persons. Alternative Names Tumor - metastatic pleural Images Pleural space References Arenberg D, Pickens A. Metastatic malignant tumors. In: Mason RJ, Murray JF, Broaddus VC, et al., eds. Murray and Nadel's Textbook of Respiratory Medicine . 5th ed. Philadelphia, PA: Elsevier Saunders; 2010:chap ...

  10. Success without College

    ERIC Educational Resources Information Center

    Fertig, Jason

    2011-01-01

    One broad-based solution that critics like Charles Murray favor to the problem of too many students going on to college is to direct more young people into relevant job-training and certificate programs. Murray's argument, articulated in "Real Education: Four Simple Truths for Bringing America's Schools Back to Reality," is based on the belief…

  11. Do We Need Another Hero? Year 8 Get to Grips with the Heroic Myth of the Defence of Rorke's Drift in 1879

    ERIC Educational Resources Information Center

    Murray, Mike

    2013-01-01

    Mike Murray shares a lesson sequence in which his students examined changing interpretations of the Battle of Rorke's Drift in 1879. Building on earlier work on teaching interpretations across an extended chronological period and the work of Wheeley et al on Rorke's Drift in particular, Murray develops new emphases, fresh ways in to the…

  12. Graduate Research Capabilities: A New Agenda for Research Supervisors

    ERIC Educational Resources Information Center

    Hill, Geof W.; Walsh, Shari P.

    2010-01-01

    There has been a conversation about university graduate employability within the Higher Education literature for some time (Cryer, 1997; Barrie, 2004, 2006, 2007; Murray, 2000; McAlpine, 2006). Within this, and often under the banner of questioning the relevance of the PhD (Murray, 2000), there have been discussions about the employability of…

  13. A synopsis of the orchid weevil genus Orchidophilus Buchanan (Curculionidae, Baridinae), with taxonomic rectifications and description of one new species

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Six species of the weevil genus Orchidophilus Buchanan are recognized: O. epidendri (Murray) comb. n. (=Acythopeus genuinus Pascoe syn. n., =Baris orchivora Blackburn syn. n., =Apotomorhinus orchidearum Kolbe syn. n.), O. aterrimus (Waterhouse), O. eburifer (Pascoe) comb. n. (=Acythopeus gilvonotatu...

  14. "Good News" Tune Makes Discussion of "Bad News" Sing.

    ERIC Educational Resources Information Center

    Sneed, Don

    1984-01-01

    Recommends playing Anne Murray's recording of "A Little Good News" to promote discussion about the nature of news and Bobbie Gentry's "Ode to Billy Joe" for discussion on writing news stories about suicides. (CRH)

  15. Smoking and asthma

    MedlinePlus

    Balmes JR, Eisner MD. Indoor and outdoor air pollution. In: Broaddus VC, Mason RJ, Ernst JD, et al, eds. Murray and Nadel's Textbook of Respiratory Medicine . 6th ed. Philadelphia, PA: Elsevier Saunders; ...

  16. Vancomycin-resistant enterococci - hospital

    MedlinePlus

    Arias CA, Murray BE. Enterococcus species, Streptococcus gallolyticus group, and Leuconostoc species. In: Bennett JE, Dolin R, Blaser MJ, eds. Mandell, Douglas, and Bennett's Principles and Practice of Infectious ...

  17. Sputum stain for mycobacteria

    MedlinePlus

    Murray PR. The clinician and the microbiology laboratory. In: Bennett JE, Dolin R, Blaser MJ, eds. Mandell, Douglass, and Bennett's Principles and Practice of Infectious Diseases . 6th ed. Philadelphia, ...

  18. Nasopharyngeal culture

    MedlinePlus

    Murray PR. The clinician and the microbiology laboratory. In: Bennett JE, Dolin R, Blaser MJ, eds. Mandell, Douglas, and Bennett's Principles and Practice of Infectious Diseases. 8th ed. Philadelphia, ...

  19. 77 FR 60343 - Petition for Reconsideration of Action in Rulemaking Proceeding

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-03

    ... of 1991, Petition for Reconsideration of SatCom Marketing LLC, Report and Order, published at 77 FR... Whisler, Esq. for Mac Murray, Petersen & Shuster LLP, on behalf of Professional Association for...

  20. Hiring Heroes Act of 2011

    THOMAS, 112th Congress

    Sen. Murray, Patty [D-WA

    2011-05-11

    07/18/2011 By Senator Murray from Committee on Veterans' Affairs filed written report. Report No. 112-36. (All Actions) Tracker: This bill has the status IntroducedHere are the steps for Status of Legislation:

  1. Responses of Chinese University Students to the Thematic Apperception Test

    ERIC Educational Resources Information Center

    Han, Elizabeth Yeo-hsien

    1974-01-01

    Murray's original Thematic Apperception Test (TAT), Cards I to XX, was administered in two sessions to 80 Chinese male and female undergraduate students at the National Taiwan Normal University. The results are compared with American averages. (Author/JH)

  2. Theories of suicidal behavior applied to Sylvia Plath.

    PubMed

    Lester, D

    1998-01-01

    The suicide of Sylvia Plath is examined from the perspective of 15 theories of suicidal behavior and is found to fit best with psychoanalytic and cognitive theories of suicide, in particular those of Aaron Beck, Henry Murray, and Edwin Shneidman.

  3. 77 FR 21989 - Critical Infrastructure Private Sector Clearance Program Request

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-12

    ... Programs Directorate (NPPD), Office of Infrastructure Protection (IP) will submit the following Information... forwarded to DHS/NPPD/IP/Monika Junker, 245 Murray Lane, SW., Mail Stop 0609, Arlington, VA...

  4. 78 FR 63573 - Endangered and Threatened Wildlife and Plants; Threatened Status for Dakota Skipper and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-24

    ... Minnesota, Iowa, and North Dakota, were needed (60 FR 10535). In a December 5, 1996 (61 FR 64481) decision... 6 counties: Clay, Lincoln, Murray, Norman, Pipestone, and Pope, although 2 of those sites have not...- mesic prairie in Lincoln County,...

  5. Short-read DNA sequencing yields microsatellite markers for Rheum

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Identifying culinary rhubarb (Rheum ×hybridum Murray) cultivars using morphological characteristics is problematic due to variability within individual genotypes, variation caused by environmental factors, plant and leaf age, similarity between genetically diverse genotypes, multiple cultivar names ...

  6. Cardiomyopathy

    MedlinePlus

    ... Textbook of Cardiovascular Medicine . 10th ed. Philadelphia, PA: Elsevier Saunders; 2015:chap 65. McKenna WJ, Elliott P. ... eds. Goldman's Cecil Medicine . 25th ed. Philadelphia, PA: Elsevier Saunders; 2016:chap 60. McMurray JJV, Pfeffer MA. ...

  7. SECOND FLOOR, VIEW OF THE NORTH PLAIN OF THE 1772 ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    SECOND FLOOR, VIEW OF THE NORTH PLAIN OF THE 1772 ROOF TO SHOW ROUND-BUTT WOOD SHINGLES; THIS ROOF IS PROTECTED BY THE 1784 SHED ADDITION - Murray-Dick-Fawcett House, 517 Prince Street, Alexandria, Independent City, VA

  8. 75 FR 16159 - President's National Security Telecommunications Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-31

    ... SECURITY National Communications System President's National Security Telecommunications Advisory Committee...: The President's National Security Telecommunications Advisory Committee (NSTAC) will hold its annual... Management Branch, Department of Homeland Security, 245 Murray Lane, SW., Washington, DC 20598-0615....

  9. 77 FR 44641 - President's National Security Telecommunications Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-30

    ... SECURITY President's National Security Telecommunications Advisory Committee AGENCY: National Protection... Committee Teleconference. SUMMARY: The President's National Security Telecommunications Advisory Committee... Security, 245 Murray Lane, Mail Stop 0615, Arlington, VA 20598-0615. Instructions: All submissions...

  10. 75 FR 29781 - President's National Security Telecommunications Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-27

    ... SECURITY National Communications System President's National Security Telecommunications Advisory Committee... meeting. SUMMARY: The President's National Security Telecommunications Advisory Committee (NSTAC) will be...), Department of Homeland Security, 245 Murray Lane, SW., Washington, DC 20598-0615; Fax:...

  11. 78 FR 45255 - President's National Security Telecommunications Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-26

    ... SECURITY President's National Security Telecommunications Advisory Committee AGENCY: National Protection... Committee Teleconference. SUMMARY: The President's National Security Telecommunications Advisory Committee... Programs Directorate, Department of Homeland Security, 245 Murray Lane, Mail Stop 3016B, Arlington,...

  12. Writing with Power: Techniques for Mastering the Writing Process.

    ERIC Educational Resources Information Center

    Murray, Donald M.; Hashimoto, Irwin

    1982-01-01

    Presents commentaries on Peter Elbow's "Writing with Power." Murray comments positively on Elbow's authoratative voice, while Hashimoto observes negatively that Elbow relies on generalizations and that his previous book will likely be of more use than "Writing with Power." (HTH)

  13. The Erice Centre, Gell-Mann QCD, the Effective Energy and Complexity

    NASA Astrophysics Data System (ADS)

    Zichichi, A.

    2014-06-01

    On the occasion of the 80th Anniversary of Murray Gell-Mann I recalled the role played by Murray in those experimental and technological activities I had been directly involved during many years, which started in 1955 up to the time of the LHC supercollider, where we propose to study the Quark-Gluon-Coloured-World (QGCW), which is totally different from our world made of QCD colourless baryons and mesons...

  14. 18 CFR Appendix A to Part 11 - Fee Schedule for FY 2009

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ....66 Minnesota Mille Lacs $34.66 Minnesota Morrison $34.66 Minnesota Mower $46.21 Minnesota Murray $34... FEDERAL POWER ACT Pt. 11, App. A Appendix A to Part 11—Fee Schedule for FY 2009 State County (Fee/acre/yr....66 Georgia Morgan $69.31 Georgia Murray $69.31 Georgia Muscogee $69.31 Georgia Newton $115.52...

  15. 18 CFR Appendix A to Part 11 - Fee Schedule for FY 2010

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... Morrison 47.08 Minnesota Mower 62.78 Minnesota Murray 47.08 Minnesota Nicollet 62.78 Minnesota Nobles 47.08... FEDERAL POWER ACT Pt. 11, App. A Appendix A to Part 11—Fee Schedule for FY 2010 State County (Fee/acre/YR... Montgomery 47.08 Georgia Morgan 94.17 Georgia Murray 94.17 Georgia Muscogee 94.17 Georgia Newton...

  16. Darwin and his publisher.

    PubMed

    McClay, David

    2009-01-01

    Charles Darwin's publisher John Murray played an important, if often underrated, role in bringing his theories to the public. As their letters and publishing archives show they had a friendly, business like and successful relationship. This was despite fundamental scientific and religious differences between the men. In addition to publishing Darwin, Murray also published many of the critical and supportive works and reviews which Darwin's own works excited.

  17. The pattern of coronary arteriolar bifurcations and the uniform shear hypothesis.

    PubMed

    Kassab, G S; Fung, Y C

    1995-01-01

    By minimizing the cost function, which is the sum of the friction power loss and the metabolic energy proportional to blood volume, Murray derived an optimal condition for a vascular bifurcation. Murray's law states that the cube of the radius of a parent vessel equals the sum of the cubes of the radii of the daughters. We tested Murray's law against our data of pig's maximally vasodilated coronary arteriolar blood vessels at bifurcation points in control and hypertensive ventricles. Data were obtained from 7 farm pigs, 4 normal controls and 3 with right ventricular hypertrophy induced by stenosis of a pulmonary artery. Data on coronary arteriolar bifurcations were obtained from histological specimens by optical sectioning. The experimental results show excellent agreement with Murray's law in control and hypertensive hearts. Theoretically, we show that Murray's law can be derived alternatively as a consequence of the uniform vessel-wall shear strain rate hypothesis and a fluid mechanics equation based on conservation of mass and momentum. Conversely, the fluid mechanical equation, together with Murray's law, established as an empirical equation of actual measurements implies the uniformity of the shear strain rate of the blood at the vessel wall throughout the arterioles. The validity of these statements is discussed.

  18. Characterization of pre-antibiotic era Klebsiella pneumoniae isolates with respect to antibiotic/disinfectant susceptibility and virulence in Galleria mellonella.

    PubMed

    Wand, Matthew E; Baker, Kate S; Benthall, Gabriel; McGregor, Hannah; McCowen, James W I; Deheer-Graham, Ana; Sutton, J Mark

    2015-07-01

    The EGD Murray collection consists of approximately 500 clinical bacterial isolates, mainly Enterobacteriaceae, isolated from around the world between 1917 and 1949. A number of these "Murray" isolates have subsequently been identified as Klebsiella pneumoniae. Antimicrobial susceptibility testing of these isolates showed that over 30% were resistant to penicillins due to the presence of diverse blaSHV β-lactamase genes. Analysis of susceptibility to skin antiseptics and triclosan showed that while the Murray isolates displayed a range of MIC/minimal bactericidal concentration (MBC) values, the mean MIC value was lower than that for more modern K. pneumoniae isolates tested. All Murray isolates contained the cation efflux gene cepA, which is involved in disinfectant resistance, but those that were more susceptible to chlorhexidine were found to have a 9- or 18-bp insertion in this gene. Susceptibility to other disinfectants, e.g., H2O2, in the Murray isolates was comparable to that in modern K. pneumoniae isolates. The Murray isolates were also less virulent in Galleria and had a different complement of putative virulence factors than the modern isolates, with the exception of an isolate related to the modern lineage CC23. More of the modern isolates (41% compared to 8%) are classified as good/very good biofilm formers, but there was overlap in the two populations. This study demonstrated that a significant proportion of the Murray Klebsiella isolates were resistant to penicillins before their routine use. This collection of pre-antibiotic era isolates may provide significant insights into adaptation in K. pneumoniae in relation to biocide susceptibility.

  19. Characterization of pre-antibiotic era Klebsiella pneumoniae isolates with respect to antibiotic/disinfectant susceptibility and virulence in Galleria mellonella.

    PubMed

    Wand, Matthew E; Baker, Kate S; Benthall, Gabriel; McGregor, Hannah; McCowen, James W I; Deheer-Graham, Ana; Sutton, J Mark

    2015-07-01

    The EGD Murray collection consists of approximately 500 clinical bacterial isolates, mainly Enterobacteriaceae, isolated from around the world between 1917 and 1949. A number of these "Murray" isolates have subsequently been identified as Klebsiella pneumoniae. Antimicrobial susceptibility testing of these isolates showed that over 30% were resistant to penicillins due to the presence of diverse blaSHV β-lactamase genes. Analysis of susceptibility to skin antiseptics and triclosan showed that while the Murray isolates displayed a range of MIC/minimal bactericidal concentration (MBC) values, the mean MIC value was lower than that for more modern K. pneumoniae isolates tested. All Murray isolates contained the cation efflux gene cepA, which is involved in disinfectant resistance, but those that were more susceptible to chlorhexidine were found to have a 9- or 18-bp insertion in this gene. Susceptibility to other disinfectants, e.g., H2O2, in the Murray isolates was comparable to that in modern K. pneumoniae isolates. The Murray isolates were also less virulent in Galleria and had a different complement of putative virulence factors than the modern isolates, with the exception of an isolate related to the modern lineage CC23. More of the modern isolates (41% compared to 8%) are classified as good/very good biofilm formers, but there was overlap in the two populations. This study demonstrated that a significant proportion of the Murray Klebsiella isolates were resistant to penicillins before their routine use. This collection of pre-antibiotic era isolates may provide significant insights into adaptation in K. pneumoniae in relation to biocide susceptibility. PMID:25896708

  20. Phosphate Stability in Diagenetic Fluids Constrains the Acidic Alteration Model for Lower Mt. Sharp Sedimentary Rocks in Gale Crater, Mars

    NASA Technical Reports Server (NTRS)

    Berger, J. A.; Schmidt, M. E.; Izawa, M. R. M.; Gellert, R.; Ming, D. W.; Rampe, E. B.; VanBommel, S. J.; McAdam, A. C.

    2016-01-01

    The Mars rover Curiosity has encountered silica-enriched bedrock (as strata and as veins and associated halos of alteration) in the largely basaltic Murray Fm. of Mt. Sharp in Gale Crater. Alpha Particle X-ray Spectrometer (APXS) investigations of the Murray Fm. revealed decreasing Mg, Ca, Mn, Fe, and Al, and higher S, as silica increased (Fig. 1). A positive correlation between SiO2 and TiO2 (up to 74.4 and 1.7 wt %, respectively) suggests that these two insoluble elements were retained while acidic fluids leached more soluble elements. Other evidence also supports a silica-retaining, acidic alteration model for the Murray Fm., including low trace element abundances consistent with leaching, and the presence of opaline silica and jarosite determined by CheMin. Phosphate stability is a key component of this model because PO4 3- is typically soluble in acidic water and is likely a mobile ion in diagenetic fluids (pH less than 5). However, the Murray rocks are not leached of P; they have variable P2O5 (Fig. 1) ranging from average Mars (0.9 wt%) up to the highest values in Gale Crater (2.5 wt%). Here we evaluate APXS measurements of Murray Fm. bedrock and veins with respect to phosphate stability in acidic fluids as a test of the acidic alteration model for the Lower Mt. Sharp rocks.

  1. Chemical variations observed on Aeolis Mons in Gale Crater, Mars

    NASA Astrophysics Data System (ADS)

    Frydenvang, Jens; Gasda, Patrick J.; Thompson, Lucy; Hurowitz, Joel; Grotzinger, John P.; Blaney, Diana L.; Gellert, Ralf; Wiens, Roger; Vasavada, Ashwin R.; MSL Science Team

    2016-10-01

    The extraordinarily extensive exposure of hematite-, clay-, sulfate-bearing stratigraphic layers in the lower part of Aeolis Mons was the primary reason Gale Crater was selected as the landing site for the Mars Science Laboratory rover, Curiosity. 753 martian solar days (sols) after the Curiosity rover landed in Gale Crater in August 2012, and after driving more than 9 km, the Curiosity rover arrived at the first exposure of the Murray formation, the basal layer of Aeolis Mons. The Murray formation is a thinly laminated lacustrine mudstone showing stratification down to the millimeter scale. This supports the idea that the stratigraphic layers of Aeolis Mons are sedimentary, and likely deposited in a series of long-lived lakes extending into the early Hesperian time, as recently described by Grotzinger et al. (Science, vol. 350, 2015). The chemical variations observed throughout the Murray formation by the ChemCam and APXS instruments in the 600+ sols since first arriving at Aeolis Mons will be presented. While Murray remains thinly laminated throughout the 30+ vertical meters of stratigraphy explored, large chemical variations are observed. The most extreme variations arise from likely co-located detrital and diagenetic silica enrichments in Murray. Remarkably, an associated diagenetic silica enrichment is also observed in the unconformably overlying eolian sandstone of the Stimson formation in that location. The detrital enrichment provides evidence of how the source region chemistry varied as the sedimentary layers of Aeolis Mons were deposited. Conversely, the diagenetic enrichment observed across both the Murray and Stimson formations provides compelling evidence for the presence of subsurface fluids in Gale Crater, thousands to millions of years after the crater lakes disappeared. This evidence of liquid water greatly extends the timescale in which Gale Crater might have been habitable.

  2. Characterization of Pre-Antibiotic Era Klebsiella pneumoniae Isolates with Respect to Antibiotic/Disinfectant Susceptibility and Virulence in Galleria mellonella

    PubMed Central

    Baker, Kate S.; Benthall, Gabriel; McGregor, Hannah; McCowen, James W. I.; Deheer-Graham, Ana; Sutton, J. Mark

    2015-01-01

    The EGD Murray collection consists of approximately 500 clinical bacterial isolates, mainly Enterobacteriaceae, isolated from around the world between 1917 and 1949. A number of these “Murray” isolates have subsequently been identified as Klebsiella pneumoniae. Antimicrobial susceptibility testing of these isolates showed that over 30% were resistant to penicillins due to the presence of diverse blaSHV β-lactamase genes. Analysis of susceptibility to skin antiseptics and triclosan showed that while the Murray isolates displayed a range of MIC/minimal bactericidal concentration (MBC) values, the mean MIC value was lower than that for more modern K. pneumoniae isolates tested. All Murray isolates contained the cation efflux gene cepA, which is involved in disinfectant resistance, but those that were more susceptible to chlorhexidine were found to have a 9- or 18-bp insertion in this gene. Susceptibility to other disinfectants, e.g., H2O2, in the Murray isolates was comparable to that in modern K. pneumoniae isolates. The Murray isolates were also less virulent in Galleria and had a different complement of putative virulence factors than the modern isolates, with the exception of an isolate related to the modern lineage CC23. More of the modern isolates (41% compared to 8%) are classified as good/very good biofilm formers, but there was overlap in the two populations. This study demonstrated that a significant proportion of the Murray Klebsiella isolates were resistant to penicillins before their routine use. This collection of pre-antibiotic era isolates may provide significant insights into adaptation in K. pneumoniae in relation to biocide susceptibility. PMID:25896708

  3. Can gravitational compaction explain the spin-diameter relation for the asteroids?

    NASA Astrophysics Data System (ADS)

    Halling, R.

    1984-08-01

    Dermott and Murray (1982) have found certain relations between mean spin frequency and mean diameter for asteroids. By assuming that matter gets compacted during the evolution of an asteroid, these relations may be explained by means of a spin formula for accreted bodies given by Alfvén and Arrhenius. The author presents a rough model for gravitational compaction of porous matter in asteroids, combines it with the spin formula, and fits the result to Dermott's and Murray's spin-diameter curves. The values obtained for the parameters (mass densities and material strengths) appear to be of a quite realistic order of magnitude.

  4. Painless dental laser - Keith Murry in lab

    NASA Technical Reports Server (NTRS)

    2000-01-01

    NASA inventor Keith Murray checks out laser technology that promises to make painless dental lasers affordable for dentists and their patients. Developed at NASA Langley Research Center, Hampton, Va., the dual-wavelength laser can be electronically switched between the two laser frequencies important to dentists. Co-inventors of the technology are Murray, Norman Barnes, also of Langley, and Ralph Hutcheson of Scientific Materials Corp., Bozeman, Montana. The technology was originally developed for studies of atmospheric wind change. Photographed in building 1202, laser lab.

  5. Three new genera and three new species of Lasiopteridi (Diptera: Cecidomyiidae) on Rubiaceae from Guadeloupe, French West Indies, and a key to genera of Neotropical Lasiopteridi unplaced to tribe.

    PubMed

    Gagné, Raymond J; Etienne, Jean

    2015-10-12

    Three new genera of Lasiopteridi (Diptera: Cecidomyiidae), Faramitella Gagné, new genus, Anapeza Gagné, new genus, and Pellacara Gagné, new genus, each with one new species, are described. The new species are from leaf galls on Rubiaceae collected in Guadeloupe, F.W.I.: Faramitella planicauda Gagné, new species, was reared from Faramea occidentalis (L.) A. Rich.; Anapeza tumida Gagné, new species, and Pellacara postica, new species, were both reared from Psychotria mapourioides DC. The three new genera belong to Lasiopteridi but are unassigned to tribe. A key to the adult stage of these and 23 other Neotropical genera of unplaced Lasiopteridi whose adults are known is provided.

  6. Review and redescription of species in the Oecetis avara group, with the description of 15 new species (Trichoptera, Leptoceridae)

    PubMed Central

    Blahnik, Roger J.; Holzenthal, Ralph W.

    2014-01-01

    Abstract The O. avara group of Oecetis is formally defined to include 4 described species, O. avara (Banks), O. disjuncta (Banks), O. elata Denning & Sykora, and O. metlacenis Bueno-Soria, and 15 new species. Oecetis marquesi Bueno-Soria, previously considered a member of the O. avara group, is treated as incertae sedis to species group, but is also redescribed and treated in the current work. New species described here (with their respective distributions) include: O. acciptrina (Costa Rica, Panama, Ecuador), O. agosta (Mexico), O. angularis (Guatemala to Ecuador), O. apache (SW USA), O. campana (Ecuador), O. constricta (Mexico to Ecuador, Venezuela, and Trinidad), O. houghtoni (North America), O. maritza (Costa Rica), O. mexicana (Mexico to Ecuador), O. patula (Guatemala, Nicaragua), O. protrusa (Mexico to Ecuador), O. sordida (Mexico, USA, Canada), O. tumida (Costa Rica), O. uncata (Costa Rica), and O. verrucula (Mexico to Costa Rica). A key to the species is also provided. PMID:24574849

  7. Three new genera and three new species of Lasiopteridi (Diptera: Cecidomyiidae) on Rubiaceae from Guadeloupe, French West Indies, and a key to genera of Neotropical Lasiopteridi unplaced to tribe.

    PubMed

    Gagné, Raymond J; Etienne, Jean

    2015-01-01

    Three new genera of Lasiopteridi (Diptera: Cecidomyiidae), Faramitella Gagné, new genus, Anapeza Gagné, new genus, and Pellacara Gagné, new genus, each with one new species, are described. The new species are from leaf galls on Rubiaceae collected in Guadeloupe, F.W.I.: Faramitella planicauda Gagné, new species, was reared from Faramea occidentalis (L.) A. Rich.; Anapeza tumida Gagné, new species, and Pellacara postica, new species, were both reared from Psychotria mapourioides DC. The three new genera belong to Lasiopteridi but are unassigned to tribe. A key to the adult stage of these and 23 other Neotropical genera of unplaced Lasiopteridi whose adults are known is provided. PMID:26624324

  8. Temperature Gradient Reconstructions from the Eastern Equatorial Pacific Cold Tongue

    NASA Astrophysics Data System (ADS)

    Ford, H. L.; Ravelo, C.; Hovan, S. A.

    2009-12-01

    Sea surface temperature (SST) reconstructions from the Western and Eastern Equatorial Pacific (WEP and EEP) indicate the Equatorial Pacific was in a permanent El Niño-like state during the early Pliocene. Specifically, SST in the WEP was nearly the same as today, while SST in the EEP cold tongue region was 2-3 °C warmer than today. Climatic transitions recorded in the EEP are of particular interest due to the region’s sensitivity to changes in upwelling and thermocline depth, and due to its role in the global ocean heat balance. However, not much is known about the evolution of the EEP cold tongue. This study aims to reconstruct the east-west and north-south gradients within the EEP using new SST and sub-surface temperature records from ODP Sites 848, 849, and 853 and published paleoceanographic records from the EEP to examine the temporal and spatial evolution of the EEP cold tongue from the Pliocene to Recent. Mg/Ca analyses on Globigerinoides sacculifer and Globorotalia tumida and alkenone analyses have been made to reconstruct east-west and north-south SST and thermocline depth, respectively. Currently, G. tumida Mg/Ca records have been generated for Sites 848 (most southern) and 853 (most northern) and G. sacculifer Mg/Ca and alkenone records have been generated for Site 848. This study compares new data to published data to achieve exceptional spatial coverage of the EEP cold tongue. Comparison of SST data to reconstructions of thermocline temperatures, paleoproductivity, and wind field strength will provide insight into the underlying causes of changes in the intensity and spatial extent of the cold tongue. Understanding these causes will aid in explaining the transition from the permanent El Niño-like state to modern conditions as climate cooled through the Pliocene.

  9. "I Am a Normal Man": A Narrative Analysis of the Accounts of Older People with Down's Syndrome Who Lived in Institutionalised Settings

    ERIC Educational Resources Information Center

    Brown, Jennifer; Dodd, Karen; Vetere, Arlene

    2010-01-01

    This paper is a narrative analysis of the accounts of six older people with Down's syndrome who spent part of their childhood in institutional environments. The study aimed to find out how the participants talked about themselves. Different types of narrative analysis were used, including those of Murray ("Qualitative psychology: a practical guide…

  10. 77 FR 43806 - Foreign-Trade Zone 26-Atlanta, GA; Application for Reorganization (Expansion of Service Area...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-26

    ... on January 17, 1977 (Board Order 115, 42 FR 4186, 01/24/77) and reorganized under the ASF on November 26, 2010 (Board Order 1725, 75 FR 76953, 12/10/10). The zone project currently has a service area..., Pickens, Gilmer, Walker, Whitfield, Murray, Forsyth, Dawson, Hall, Banks, Lumpkin, Fulton,...

  11. A Best Practices Guide in Social Skills Training for Kindergarten Teachers of Children with High Functioning Autism Spectrum Disorder

    ERIC Educational Resources Information Center

    Levine, Mandi Danielle

    2012-01-01

    This dissertation identifies social skills as the central treatment concern for young children with Asperger's Syndrome (AS)/High Functioning Autism Spectrum Disorder (HFASD) in an educational setting (Attwood, 1998; Macintosh & Dissanayake, 2006; Rao, Beidel, & Murray, 2008; Sansosti, 2010; Sansosti, Powell-Smith, & Cowan, 2010).…

  12. Should physicians prepare for war? 1. The obligation to care for the casualties.

    PubMed

    Bisgard, J C

    1982-04-01

    This is an introduction to a set of four commentaries on the controversy that has arisen over whether physicians should cooperate in Defense Department planning for the care of military casualties, airlifted to U.S. civilian hospitals, in the event of a large-scale war. The commentaries are by Jay C. Bisgard, H. Jack Geiger, James T. Johnson, and Thomas H. Murray.

  13. Education Budget Proposals. Hearing of the Committee on Health, Education, Labor, and Pensions on Investing in Our Nation's Future: Perspectives on Federal Funding for Education. United States Senate, One Hundred Sixth Congress, First Session.

    ERIC Educational Resources Information Center

    Congress of the U.S., Washington, DC. Senate Committee on Health, Education, Labor, and Pensions.

    The Hearing of the Committee on Health, Education, Labor, and Pensions of the U.S. Senate, held February 11, 1999, contains opening statements by Senators Jeffords, Hutchinson, Hagel, Sessions, Kennedy, Dodd, and Murray; prepared statements by educators, school board personnel, and a state representative; and additional material on education…

  14. 77 FR 72434 - Buy America Waiver Notification

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-05

    ...This notice provides information regarding the FHWA's finding that a Buy America waiver is appropriate for the use of non-domestic Motor and Machinery Brakes; 16''-Diameter Motor Brakes, weight 340 lb, and 13''-Diameter Machinery Brakes, weight 250 lb, for rehabilitation of Murray Morgan Bridge, project STP-STPUL-3268(003), and South Park Bridge Replacement, project......

  15. Professional Competence and the Law. Dalhousie Continuing Legal Education Series, No. 21.

    ERIC Educational Resources Information Center

    Trakman, Leon E., Ed.; Watters, Douglas, Ed.

    Proceedings of a 1981 conference on professional competence and the law are presented. The perspectives of educators Leon Trakman, Murray Fraser, and Stewart Macaulay concerning the educational needs of the legal profession and the role of the law school are presented. The Canadian justices McIntyre and Cowan comment on the quality of lawyers'…

  16. Joining Forces: Working with Spirituality in Organisations.

    ERIC Educational Resources Information Center

    Snell, Robin; And Others

    1991-01-01

    Includes "Joining Forces" (Lindamood); "Spiritual Dimension of the Learning Organisation" (Hawkins); "Management--A 'Spiritual' Foundation?" (Nevard); "Hermit in Organisations" (Murray); "Towards a Spiritual Perspective on Behavior at Work" (Henson); "On Uncertainty" (Adlam); "Spirituality in Organisations" (Lee); "Ecological Organisation" (Conn);…

  17. Channels for Improved Performance from Living on Campus

    ERIC Educational Resources Information Center

    de Araujo, Pedro; Murray, James

    2010-01-01

    In a recent study, de Araujo and Murray (2010) find empirical evidence that living on campus leads to improved student performance, finding both immediate effects (GPA improves while the student lives on campus) and permanent effects (GPA remains higher even after moving off campus). Using the same dataset, we extend the analysis to explain why…

  18. Leonard S. Kenworthy: An Early Source of Ideas and Activities for Teaching Social Studies

    ERIC Educational Resources Information Center

    Social Studies, 2004

    2004-01-01

    Leonard Stout Kenworthy was born to Quaker parents in Richmond, Indiana, in 1912. His father, Murray Kenworthy, was a faculty member in the religious studies department at Earlham College in Richmond. After spending time in New York, Ohio, and Washington, DC, Kenworthy enrolled in a Quaker boarding school not far from Philadelphia. After…

  19. Translating Methods of Shakespeare in China

    ERIC Educational Resources Information Center

    Sun, Yanna

    2009-01-01

    Shakespeare was not known to the Chinese until Lin Zexu's (1785-1850) translation of Hugh Murray's (1789-1845) "Cyclopedia of Geography" (1836). Afterwards Shakespeare in China saw many complicated changes, from being regarded as a story-teller to being fully received as a seasoned playwright and poet, and his plays were rendered into…

  20. "The Bell Curve": Does IQ and Race Determine Class and Place in America?

    ERIC Educational Resources Information Center

    Parker, Franklin

    "The Bell Curve" by Richard J. Herrnstein and Charles A. Murray has ignited a fierce academic debate. They assert that IQ as measured by tests has replaced family wealth and status in determining jobs, income, class, and place in American life; that whites average 15 IQ points higher than blacks; and that high-IQ ruling elites, with fewer children…

  1. Education Matters, November 2008

    ERIC Educational Resources Information Center

    Beckner, Gary, Ed.

    2008-01-01

    "Education Matters" is the monthly newsletter of the Association of American Educators (AAE), an organization dedicated to advancing the American teaching profession through personal growth, professional development, teacher advocacy and protection. This issue of the newsletter includes: (1) Peeking Behind the Blue Ribbon (Vicki E. Murray); (2)…

  2. Family Counseling Interventions: Understanding Family Systems and the Referral Process.

    ERIC Educational Resources Information Center

    McWhirter, Ellen Hawley; And Others

    1993-01-01

    This article describes concepts underlying the idea of the "family as a system"; compares and contrasts four approaches to family therapy (those of Virginia Satir, Jay Haley, Murray Bowen, and Salvador Minuchin); and offers suggestions to teachers referring parents for family counseling. (DB)

  3. Improving the Quality of Continuing Higher Educators' Leadership Role in Economic and Community Development Planning. Research Report.

    ERIC Educational Resources Information Center

    Ferro, Trenton R.

    In response to a 1991 call issued by the American Association of State Colleges and Universities, eight institutions were selected to participate in a model process designed to involve higher education in the economics of community development. They were: Bloomsburg University, Chadron State College, Kean College of New Jersey, Murray State…

  4. The Bell Curve Wars. Race, Intelligence, and the Future of America.

    ERIC Educational Resources Information Center

    Fraser, Steven, Ed.

    "The Bell Curve" by Richard J. Herrnstein and Charles Murray has generated enormous debate as a result of its claim that there is a connection between race and intelligence. The essays of this collection respond to "The Bell Curve" in various ways. Taken together, the following offer an antidote to a work of dubious premises and socially alarming…

  5. Delivered! A Mid-Sized Academic Library's Experience with Distance Education

    ERIC Educational Resources Information Center

    Bartnik, Linda

    2010-01-01

    Murray State University (Kentucky) has been experimenting with various means of document delivery and research instruction for its online only and satellite campuses. These include ILLiad-based document delivery, Camtasia-to-UTube tutorials, a discipline-based service called Library on Blackboard, Eluminate and other virtual instructional methods.…

  6. 8. Historic American Buildings Survey HABS Photocopy made from photograph ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    8. Historic American Buildings Survey HABS Photocopy made from photograph from the Smithsonian Institution, Washington, D.C. DELAWARE LOG HOUSE EXHIBIT0 INSTALLED IN THE 'HALL OF EVERYDAY LIFE IN THE AMERICAN PAST,' MUSEUM OF HISTORY AND TECHNOLOGY, SMITHSONIAN INSTITUTION - Robinson-Murray House, Limestone Road, Milltown, New Castle County, DE

  7. 18. Photocopy of architectural drawing (from Albuquerque Area Indian Health ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    18. Photocopy of architectural drawing (from Albuquerque Area Indian Health Service, Division of Health Facilities, Albuquerque, New Mexico) Mayers, Murray, and Phillip, Architects, New York, NY, 1934 Detail sheet - Taos Indian Health Center, 0.3 mile south-southwest of Pueblos Plaza, Taos Pueblo, Taos County, NM

  8. 14. Photocopy of architectural drawing (from Albuquerque Area Indian Health ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    14. Photocopy of architectural drawing (from Albuquerque Area Indian Health Service, Division of Health Facilities, Albuquerque, New Mexico) Mayers, Murray, and Phillip, Architects, New York, N&, 1934 Foundation Plan - Taos Indian Health Center, 0.3 mile south-southwest of Pueblos Plaza, Taos Pueblo, Taos County, NM

  9. 16 Photocopy of architectural drawing (from Albuquerque Area Indian Health ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    16 Photocopy of architectural drawing (from Albuquerque Area Indian Health Service, Division of Health Facilities, Albuquerque, New Mexico) Mayers Murray, and Phillip, Architects, New York, NY, 1934 first floor mechanical plan - heating - Taos Indian Health Center, 0.3 mile south-southwest of Pueblos Plaza, Taos Pueblo, Taos County, NM

  10. 15. Photocopy of architectural drawing (from Albuquerque Area Indian Health ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    15. Photocopy of architectural drawing (from Albuquerque Area Indian Health Service, Division of Health Facilities, Albuquerque, New Mexico) Mayers, Murray, and Phillip, Architects, New York, NY, 1934 First Floor - plumbing - Taos Indian Health Center, 0.3 mile south-southwest of Pueblos Plaza, Taos Pueblo, Taos County, NM

  11. 17. Photocopy of architectural drawing (from Albuquerque Area Indian Health ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    17. Photocopy of architectural drawing (from Albuquerque Area Indian Health Service, Division of Health Facilities, Albuquerque, New Mexico) Mayers, Murray, and Phillip, Architects, New York, NY, 1934 Elevations - Taos Indian Health Center, 0.3 mile south-southwest of Pueblos Plaza, Taos Pueblo, Taos County, NM

  12. Are We There Yet?

    ERIC Educational Resources Information Center

    Rice, George; Bowman, Michael

    2007-01-01

    Children in the back seat on a long trip are not the only ones asking the question "Are we there yet?" At Murray State University (MSU) and other universities starting new programs, the question becomes one of validation of the program. In the late 90s, MSU, a midsize university, was entrusted with the responsibility of developing a program of…

  13. United States Department of Education Update

    ERIC Educational Resources Information Center

    Linton, John

    2009-01-01

    This update reports the passing of Dr. Lane Murray, founding superintendent of the Windham School District in Texas and two time president of the Correctional Education Association. It also discusses the reauthorization of the Workforce Investment Act (WIA). In hopes of informing deliberations aimed at the reauthorization of WIA, the prestigious…

  14. 1. GENERAL VIEW, FROM SOUTHEAST. FRONT FACES EAST. Larger Building ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    1. GENERAL VIEW, FROM SOUTHEAST. FRONT FACES EAST. Larger Building is Hotel Williams (HABS No. MI-258). Photocopied from photograph taken August 4, 1965 by Jack Crosby of the Michigan Historical Commission. See also Hotel Williams, MI-258, for a photocopy of a drawing showing Williams House. - Hotel Williams, Williams House, Murray Bay, Munising, Alger County, MI

  15. National Dance Association. Lectures by NDA Scholars 1977-1987.

    ERIC Educational Resources Information Center

    American Alliance for Health, Physical Education, Recreation and Dance, Reston, VA. National Dance Association.

    This monograph contains reprints of lectures presented by National Dance Association Scholars from 1977 through 1987. The following Scholars are represented: (1) Elizabeth R. Hayes; (2) Miriam Gray; (3) Ruth L. Murray; (4) Araminta Little; (5) Mary Frances Dougherty; (6) Charlotte York Irey; (7) Lois "Betty" Ellfeldt; (8) Mary Alice "Buff"…

  16. Research and Clinical Center for Child Development Annual Report, 1992-1993, No. 16.

    ERIC Educational Resources Information Center

    Wakai, Kunio, Ed.

    A variety of topics on human development is covered in this annual report. The 11 articles are: (1) "Young Children's Personifying and Vitalistic Biology" (Kayoko Inagaki and Giyoo Hatano); (2) "Acoustic Analysis of Natural Maternal Speech to Preschool Language Impaired and Normal Children" (Debora L. Scheffel and Murray Alpert); (3)…

  17. Higher Education 2000: What Will Be New? What Will Be Different? Proceedings of the Annual Accreditation and Quality Assurance Conference (1999).

    ERIC Educational Resources Information Center

    Commission on Higher Education, Philadelphia, PA. Middle States Association of Colleges and Schools.

    This collection of essays from the 1999 Annual Accreditation and Quality Assurance Conference includes: "Wanted: President for the New Millennium" (Stephen Joel Trachtenberg); "Medium and Message: Passion, Values, and Quality in the New Academy" (John Daniel); "The 100th Anniversary of the College Board" (Nicholas Murray Butler, Joseph Hankin, and…

  18. The Hundred Yard Lie: The Corruption of College Football and What We Can Do To Stop It.

    ERIC Educational Resources Information Center

    Telander, Rick

    This book, originally published in 1989, is intended as an indictment of corruption in college football. Now reissued, the book has new forewords by Murray Sperber, a professor at Indiana University, and Richard Warch, president of Lawrence University in Wisconsin. The book also has an afterword by the author which reviews some of the major…

  19. "The Bell Curve": Ringing in the Contract with America.

    ERIC Educational Resources Information Center

    Farrell, Walter C., Jr.; And Others

    1995-01-01

    Herrnstein and Murray's "The Bell Curve" claims that IQ is hereditary and that African Americans consistently score 15 points lower than other racial groups. Coolly received by academics, the book is being warmly embraced by Republican politicians endorsing fiscal austerity and social mean-spiritedness. The book rationalizes a conservative…

  20. Effects of Context Type on Lipreading and Listening Performance and Implications for Sentence Processing

    ERIC Educational Resources Information Center

    Spehar, Brent; Goebel, Stacey; Tye-Murray, Nancy

    2015-01-01

    Purpose: This study compared the use of 2 different types of contextual cues (sentence based and situation based) in 2 different modalities (visual only and auditory only). Method: Twenty young adults were tested with the Illustrated Sentence Test (Tye-Murray, Hale, Spehar, Myerson, & Sommers, 2014) and the Speech Perception in Noise Test…

  1. A Rural Communiversity: Teaching Developmental through Graduate Courses via Two-Way Video.

    ERIC Educational Resources Information Center

    O'Hara, Len; Patton, Steve

    In 1986, Paducah Community College (PCC), a small rural college in western Kentucky, signed an agreement with Murray State University (MSU) to have MSU teach junior- and senior-level courses on the PCC campus. As costs became prohibitive for MSU, the two institutions began examining distance learning possibilities. At the same time, the seven area…

  2. Spanning the Gulf: Empathy, Dialogue, and Harmony in Exploring Literature of Diversity

    ERIC Educational Resources Information Center

    Sellers, Murray McCowen

    2007-01-01

    The gulf that separates us as individuals--our backgrounds, our experiences, our priorities, our essential points of view--is not always easy to span. This article discusses the author's belief that "spanning the gulf" of "diversity" in the classroom is best achieved through empathy, dialogue, and harmony. Murray McCowen…

  3. Cooperative Programs with Business and Community. Forum, Volume II, Number 7, May 1980.

    ERIC Educational Resources Information Center

    Association of American Colleges, Washington, DC.

    Degree programs for adults that are offered by colleges and universities jointly with noneducational organizations, such as businesses, unions, hospitals, local governments, and community organizations are considered. An article by Murray Frank traces the history of the concept of community service by colleges, describes the experiences of the…

  4. Everything You Thought Was True about IQ Testing, but Isn't: A Reaction to "The Bell Curve."

    ERIC Educational Resources Information Center

    Dent, Harold E.

    Rather than focus on the numerous flaws in the book "The Bell Curve" (Herrnstein & Murray), this discussion focuses on the racism and bigoted beliefs of the pioneers in the mental measurement movement in the United States--beliefs which provided the background and opportunity for the publication of the book. A significant amount of these…

  5. Talking Wild.

    ERIC Educational Resources Information Center

    Crawford, Lyall

    1996-01-01

    Focuses on the concept of "interplay"--interlinking and interdependence of the human and nonhuman worlds. Discusses (following Murray Bookchin's terms) the transactional quality of first and second nature, and the contexts of obedience and control that often impact their coexistence. Uses an excerpt from Gloria Anzaldua's fiction to fuel the…

  6. Lives and Deaths: Biographical Notes on Selections from the Works of Edwin S. Shneidman

    ERIC Educational Resources Information Center

    Leenaars, Antoon A.

    2010-01-01

    Edwin S. Shneidman (DOB: 1918-05-13; DOD: 2009-05-15) is a father of contemporary suicidology. His work reflects the intensive study of lives lived and deaths, especially suicides, and is the mirror to his mind. His contributions can be represented by five categories: psychological assessment, logic, Melville and Murray, suicide, and death. His…

  7. Finding the Signal by Adding Noise: The Role of Noncontrastive Phonetic Variability in Early Word Learning

    ERIC Educational Resources Information Center

    Rost, Gwyneth C.; McMurray, Bob

    2010-01-01

    It is well attested that 14-month-olds have difficulty learning similar sounding words (e.g., bih/dih), despite their excellent phonetic discrimination abilities. By contrast, Rost and McMurray (2009) recently demonstrated that 14-month-olds' minimal-pair learning can be improved by the presentation of words by multiple talkers. This study…

  8. Infants Are Sensitive to Within-Category Variation in Speech Perception

    ERIC Educational Resources Information Center

    McMurray, Bob; Aslin, Richard N.

    2005-01-01

    Previous research on speech perception in both adults and infants has supported the view that consonants are perceived categorically; that is, listeners are relatively insensitive to variation below the level of the phoneme. More recent work, on the other hand, has shown adults to be systematically sensitive to within category variation [McMurray,…

  9. Proceedings of the Annual Conference of the International Group for the Psychology of Mathematics Education (13th, Paris, France, July 9-13, 1989), Volume 3.

    ERIC Educational Resources Information Center

    Vergnaud, Gerard, Ed.; Rogalski, Janine, Ed.; Artique, Michele, Ed.

    This proceedings of the annual conference of the International Group for the Psychology of Mathematics Education (PME) includes the following research papers: "A Model of Understanding Two-Digit Numeration and Computation" (H. Murray & A. Olivier); "The Computer Produces a Special Graphic Situation of Learning the Change of Coordinate System" (S.…

  10. "The Bell Curve": Review of Reviews.

    ERIC Educational Resources Information Center

    Parker, Franklin; Parker, Betty J.

    This paper reviews the book "The Bell Curve" by Harvard psychologist Richard J. Herrnstein and political scientist Charles Alan Murray. The paper asserts as the book's main points and implications: (1) one's socioeconomic place in life is now determined by IQ rather than family wealth and influence; (2) ruling white elites, who have benefited from…

  11. A Centuries-Old Dialectic.

    ERIC Educational Resources Information Center

    White, Lana

    1987-01-01

    Illustrates the debate between (1) those holding the mechanic view that form must be imposed on writing, enabling the selection of relevant details, and (2) those holding the neo-Coleridgean organic view that as one writes one's thinking assumes shape, structure being indivisible from content. Contrasts textbooks by R. Decker and D. Murray. (JG)

  12. What's Up Down Under? A Geography of Australia for Elementary Students.

    ERIC Educational Resources Information Center

    Fitzhugh, W.

    This paper is part of a larger study entitled "A Comparative Geography of Three Ecologically Similar Regions," which compares the Chesapeake Bay region of Maryland with the Murray River region of South Australia and the Rio de la Plata region of Uruguay. Readings with accompanying questions are intended for classroom use. Teachers are encouraged…

  13. Maryland: A Geographic Study for Elementary Students.

    ERIC Educational Resources Information Center

    Fitzhugh, William P.

    This paper shows comparisons among the Chesapeake Bay region of Maryland, the Murray River region of South Australia, and the Rio de la Plata region of Uruguay. Through comparative geography, students are to draw their own conclusions about the similarities and differences of the three regions. Teachers are encouraged to use other resources to aid…

  14. A Geography of Uruguay for Elementary Children.

    ERIC Educational Resources Information Center

    Fitzhugh, William P.

    This paper is part of a larger study, conducted as part of a Christa McAuliffe Fellowship research project, "A Comparative Geography of Three Ecologically Similar Regions." The study compared the Chesapeake Bay region of Maryland with the Murray River region of South Australia and the Rio de la Plata region of Uruguay. The project was designed to…

  15. New Challenges in Distance Education. Occasional Papers 7.

    ERIC Educational Resources Information Center

    Roberts, David, Ed.

    Three challenges that face distance educators at the national, institute, and individual subject level in Australia are discussed in a set of Occasional Papers by the Riverina-Murray Institute of Higher Education (RMIHE). Australia is undergoing a period of major change. The binary system of universities and colleges of advanced education is…

  16. The Relativity of Genotypes and Phenotypes.

    ERIC Educational Resources Information Center

    Willie, Charles Vert

    1995-01-01

    Asserts that Herrnstein and Murray's "The Bell Curve" (1994) is an attempt to influence and control public discourse about public policy and inequality. It examines four of the book's flaws in classification, analyses, research, and its failure to recognize intelligence as having both genotypic and phenotypic manifestations. (GR)

  17. Handbook and Resource Directory for International Students and Scholars. Revised.

    ERIC Educational Resources Information Center

    Murray State Univ., KY.

    A handbook of information for foreign students, visiting scholars, and visiting faculty members is presented by Murray State University (Kentucky). The following topics are covered: academic life, automobiles, the Center for International Programs, child care, credential (transcript) evaluation, emergencies, employment, English language, finances,…

  18. Automatic Generation of Intelligent Tutoring Capabilities via Educational Data Mining

    ERIC Educational Resources Information Center

    Stamper, John Carroll

    2010-01-01

    Intelligent Tutoring Systems (ITSs) that adapt to an individual student's needs have shown significant improvement in achievement over non-adaptive instruction (Murray 1999). This improvement occurs due to the individualized instruction and feedback that an ITS provides. In order to achieve the benefits that ITSs provide, we must find a way to…

  19. Data-Driven Performativity: Neoliberalism's Impact on Drama Education in Western Australian Secondary Schools

    ERIC Educational Resources Information Center

    Lambert, Kirsten; Wright, Peter R.; Currie, Jan; Pascoe, Robin

    2015-01-01

    In recent years, the much touted "difficult economic times" has resulted in a drastic reduction in arts and education funding in western capitalist nations (Fowles 2014; Henwood and Featherstone 2013; Murray and Erridge 2012; Smith 2013). Combined with this "age of austerity," schools have been subjected to decades of…

  20. Advances in Eye Tracking in Infancy Research

    ERIC Educational Resources Information Center

    Oakes, Lisa M.

    2012-01-01

    In 2004, McMurray and Aslin edited for "Infancy" a special section on eye tracking. The articles in that special issue revealed the enormous promise of automatic eye tracking with young infants and demonstrated that eye-tracking procedures can provide significant insight into the emergence of cognitive, social, and emotional processing in infancy.…

  1. Dive into the Deep End: Anchor Texts Build Understanding of Complex Ideas

    ERIC Educational Resources Information Center

    Zimmerman, Diane P.; Litzau, Katrina M.; Murray, Vicki L.

    2016-01-01

    In 2014, instructional coaches Katrina Litzau and Vicki Murray designed professional learning to support teachers and principals in developing a deeper understanding of the cognitive processes of leadership. Steeped in the Common Core State Standards and building on quality literacy instruction, they designed the professional learning based on…

  2. 76 FR 67760 - National Register of Historic Places; Notification of Pending Nominations and Related Actions

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-02

    ... Washington, Margaret Murray, School, (Public School Buildings of Washington, DC MPS) 27 O St., NW..., Lawrence, 11000853 Middlesex County Acton High School, 3 Charter Rd., Acton, 11000854 OHIO Montgomery...., Mulberry Creek, & Water View Rds., Morattico, 11000857 BILLING CODE 4312-51-P...

  3. Education Leaders Applaud ATTAIN Act

    ERIC Educational Resources Information Center

    Curriculum Review, 2007

    2007-01-01

    This article talks about Achievement Through Technology and Innovation (ATTAIN) Act, a bill introduced by Senators Bingaman (D-NM), Burr (R-NC), and Murray (D-WA) and applauded by a coalition of education and industry groups. The proposed ATTAIN Act is similar to its companion in the House (HR 2449), and builds upon the Enhancing Education Through…

  4. Reasoning by Analogy:. Attempts to Solve the Cosmological Constant Paradox

    NASA Astrophysics Data System (ADS)

    Porto, Rafael A.; Zee, A.

    2011-11-01

    Talk given by one of us (A. Zee) at Murray Gell-Mann's 80th Birthday Celebration held in Singapore, February 2010. Based on R. Porto and A. Zee, Class. Quant. Grav. 27, 065006 (2010) [arXiv:0910.3716 [hep-th

  5. Utah's First Joint Effort in Vocational Health

    ERIC Educational Resources Information Center

    Sprague, Richard F.

    1976-01-01

    Describes a tri-district program (in Utah's Granite, Jordan, and Murray school districts) to expand the health career program, which involved 62 field trips scouring the area's hospitals and health care centers, and student work experience opportunities, to expose students from 13 high schools to occupations beyond the traditional doctor and…

  6. Variation of the orbital elements for parabolic trajectories due to a small impulse using Gauss equations

    NASA Astrophysics Data System (ADS)

    Kamel, Osman M.; Ammar, M. K.

    2006-12-01

    Firstly we derive Gauss' perturbation equation for parabolic motion using Murray-Dermott and Kovalevsky procedures. Secondly, we easily deduce the variations of the orbital elements for the parabolic trajectories due to a small impulse at any point along the path and at the vertex of the parabola.

  7. The Statistical War on Equality: Visions of American Virtuosity in "The Bell Curve."

    ERIC Educational Resources Information Center

    Grey, Stephanie Houston

    1999-01-01

    Examines the "sedimented" history of probability in America using Richard Herrnstein and Charles Murray's "The Bell Curve." Suggests this model reinforces ethnic hierarchy and differences by creating a "moral cartography" for the nation. Defines this spatial rhetoric with three sociographic dynamics. Concludes with suggestions for a counter…

  8. Treatment of Depression and Anxiety in Parkinson's Disease: A Pilot Study Using Group Cognitive Behavioural Therapy

    ERIC Educational Resources Information Center

    Feeney, Farah; Egan, Sarah; Gasson, Natalie

    2005-01-01

    Depression and anxiety affect up to 50% of people with Parkinson's Disease (PD) (Marsh, 2000; Murray, 1996), however, few studies have examined the effectiveness of psychological treatment. This study examined the effectiveness of group cognitive behaviour therapy (CBT) in treating depression and anxiety in PD. Four participants, aged between 56…

  9. Fair Play: Teaching the Logical Fallacies.

    ERIC Educational Resources Information Center

    Griffin, Susan

    This paper describes a freshman composition course which looks at racism and sexism in science, and within which the instructor uses a 1989 "Atlantic Monthly" piece by R.J. Herrnstein, co-author with Charles Murray of "The Bell Curve." In his article, Herrnstein argues that the intelligence of the nation is declining because educated young women…

  10. 77 FR 69576 - Drawbridge Operation Regulation; Thea Foss Waterway Previously Known as City Waterway, Tacoma, WA

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-20

    ... Acronyms CFR Code of Federal Regulations DHS Department of Homeland Security FR Federal Register NPRM... Act notice regarding our public dockets in the January 17, 2008, issue of the Federal Register (73 FR.... SUMMARY: The Coast Guard proposes to modify the operating schedule that governs the Murray Morgan...

  11. Enquiry, Engagement, and eLearning: Three Perspectives on a Student-Centred, Online, Enquiry-Based Course

    ERIC Educational Resources Information Center

    Murray, Jacqueline; Giesbrecht, Natalie; Mosonyi, Samuel

    2013-01-01

    In the 2011 Winter semester, the University of Guelph engaged in a pedagogical experiment: an online first-year seminar. This article is a conversation about the learning journey that surrounds this seminar, as experienced by three participants: Jacqueline Murray (JM), Professor of History and Director of the FirstYear Seminar Program (FYS);…

  12. Professional Judgement in Ethical Decision-Making: Dialogue and Relationship

    ERIC Educational Resources Information Center

    Lehr, Ron; Sumarah, John

    2004-01-01

    This article examines the role of professional judgement in the ethical decision-making process. Drawing on the personalist philosophy of John MacMurray, and the CCA Code of Ethics and Standards of Practice, the authors propose that a social constructivist approach involving dialogue and relationship complement the current internal psychologically…

  13. Noble gases, C,N, and Si isotopes in interstellar SiC form the Murchison carbonaceous chondrite

    NASA Technical Reports Server (NTRS)

    Ming, Tang; Anders, Edward; Zinner, Ernst

    1988-01-01

    Isotopic measurements of presolar interstellar silicon carbide are presented. Silicon carbide was recently identified in a primitive meteorite Murray. There exists strong evidence that the silicon carbide predates the formation of the solar system and originated in the atmospheres of certain stars. Thus, this material provides a link with its stellar sources and gives the opportunity to study processes taking place in distant stars.

  14. How Do You Construct an Historical Claim? Examining How Year 12 Coped with Challenging Historiography

    ERIC Educational Resources Information Center

    Murrau, Kirstie

    2015-01-01

    While preparing her Year 12 students for an International Baccalaureate paper on early Islam, Kirstie Murray became concerned that students' weaknesses in making claims would be particularly exposed by the challenging complexity of this topic's source record and its contested historiography. Drawing on the practice of other history teachers,…

  15. PAH Measurements in Air in the Athabasca Oil Sands Region.

    PubMed

    Hsu, Yu-Mei; Harner, Tom; Li, Henrik; Fellin, Phil

    2015-05-01

    Polycyclic aromatic hydrocarbon (PAH) measurements were conducted by Wood Buffalo Environmental Association (WBEA) at four community ambient Air quality Monitoring Stations (AMS) in the Athabasca Oil Sands Region (AOSR) in Northeastern Alberta, Canada. The 2012 and 2013 mean concentrations of a subset of the 22 PAH species were 9.5, 8.4, 8.8, and 32 ng m(-3) at AMS 1 (Fort McKay), AMS 6 (residential Fort McMurray), AMS 7 (downtown Fort McMurray), and AMS 14 (Anzac), respectively. The average PAH concentrations in Fort McKay and Fort McMurray were in the range of rural and semirural areas, but peak values reflect an industrial emission influence. At these stations, PAHs were generally associated with NO, NO2, PM2.5, and SO2, indicating the emissions were from the combustion sources such as industrial stacks, vehicles, residential heating, and forest fires, whereas the PAH concentrations at AMS 14 (∼35 km south of Fort McMurray) were more characteristic of urban areas with a unique pattern: eight of the lower molecular weight PAHs exhibited strong seasonality with higher levels during the warmer months. Enthalpies calculated from Clausius-Clapeyron plots for these eight PAHs suggest that atmospheric emissions were dominated by temperature-dependent processes such as volatilization at warm temperatures. These findings point to the potential importance of localized water-air and/or surface-air transfer on observed PAH concentrations in air.

  16. Educating toward Direct Democracy and Ecological Sustainability: Theory of Social Ecology as a Framework for Critical, Democratic, and Community-Based Education

    ERIC Educational Resources Information Center

    Holohan, Kevin J.

    2012-01-01

    The aim of this dissertation project was to explore and extrapolate the work of the left-libertarian social theorist, Murray Bookchin (1921-2006), paying particular attention to his theory of social ecology and to examine its implications for and use as a comprehensive philosophical/theoretical framework for alternative secondary education that…

  17. Individual Learning Issues. Symposium 44. [Concurrent Symposium Session at AHRD Annual Conference, 2000.

    ERIC Educational Resources Information Center

    2000

    This document contains three papers from a symposium on individual learning issues that was conducted as part of a conference on human resource development (HRD). "Communication in the Workplace: Using Myers-Briggs To Build Communication Effectiveness" (Patrice M. Scanlon, Judy K. Schmitz, Tracey Murray, Lisa M. Hooper) reports on a study of…

  18. A Study To Identify and Measure Desirable Student Social Outcomes.

    ERIC Educational Resources Information Center

    Fort McMurray School District 2833 (Alberta).

    This report outlines the work of the Fort McMurray School District in Alberta, Canada, to develop a set of indicators of and standards applicable to students' social skills, behaviors, and attitudes. The indicators and standards are intended to be used to assess the quality of a selected portion of the district's education program and delivery.…

  19. Social Skills Diagnostic Screen Administration Manual.

    ERIC Educational Resources Information Center

    Fort McMurray School District 2833 (Alberta).

    The Social Skills Diagnostic Screen (SSDS), developed by the Fort McMurray School District in Alberta, Canada, in 1991-92, is a checklist which may be used by teachers, parents, counsellors, and students to ascertain a student's level of social development. The SSDS may also serve as a tool to specify or clarify specific social skills with which…

  20. 77 FR 3283 - Agency Information Collection Activities: Proposed Collection; Comments Requested; Report of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-23

    ... [Federal Register Volume 77, Number 14 (Monday, January 23, 2012)] [Notices] [Page 3283] [FR Doc... 20530. Jerri Murray, Department Clearance Officer, PRA, United States Department of Justice. [FR Doc... Multiple Sale or Other Disposition of Pistols and Revolvers ACTION: 30-Day Notice of Information...

  1. Chief Seattle's Speech Revisited

    ERIC Educational Resources Information Center

    Krupat, Arnold

    2011-01-01

    Indian orators have been saying good-bye for more than three hundred years. John Eliot's "Dying Speeches of Several Indians" (1685), as David Murray notes, inaugurates a long textual history in which "Indians... are most useful dying," or, as in a number of speeches, bidding the world farewell as they embrace an undesired but apparently inevitable…

  2. 77 FR 35700 - Protected Critical Infrastructure Information (PCII) Program Survey

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-14

    ...), National Protection and Programs Directorate (NPPD), Office of Infrastructure Protection (IP... DHS/NPPD/IP/IICD, 245 Murray Lane, SW., Mailstop 0602, Arlington, VA 20598-0602. Email requests should... NPPD/IP use only.OMB is particularly interested in comments that: 1. Evaluate whether the...

  3. 76 FR 81955 - Assessment Questionnaire-IP Sector Specific Agency Risk Self Assessment Tool (IP-SSARSAT)

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-29

    ... SECURITY Assessment Questionnaire--IP Sector Specific Agency Risk Self Assessment Tool (IP-SSARSAT) AGENCY... Protection and Programs Directorate (NPPD), Office of Infrastructure Protection (IP), Sector Specific Agency.../IP/SSA EMO, 245 Murray Lane SW., Mail Stop 0640, Arlington, VA 20598-0630. Emailed requests should...

  4. BioMaPS: A Roadmap for Success

    ERIC Educational Resources Information Center

    McCarthy, Maeve L.; Fister, K. Renee

    2010-01-01

    The manuscript outlines the impact that our National Science Foundation Interdisciplinary Training for Undergraduates in Biological and Mathematical Sciences program, BioMaPS, has had on the students and faculty at Murray State University. This interdisciplinary program teams mathematics and biology undergraduate students with mathematics and…

  5. 75 FR 8187 - Qualification of Drivers; Exemption Renewals; Vision

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-02-23

    ... Thomas E. Anderson, Garry A. Baker, Bruce W. Barrett, Richard D. Becotte, Wayne Burnett, Theodore W... at the end of the 2-year period. The comment period ended on January 11, 2010 (74 FR 65845.... Murray, Anthony D. Ovitt, John R. Parsons, III, Martin Postma, Steven S. Reinsvold, Michael J....

  6. Medical Sociology: What's in a Name?

    ERIC Educational Resources Information Center

    Gill, Derek G.; Twaddle, Andrew C.

    1977-01-01

    Traces the development of medical sociology, which deals with sociological perspectives in relation to health care, from trends in Europe and the United States beginning in the early 20th century through the present. Available from: Unipub, Box 433, Murray Hill Station, New York, New York 10016. (AV)

  7. PAH Measurements in Air in the Athabasca Oil Sands Region.

    PubMed

    Hsu, Yu-Mei; Harner, Tom; Li, Henrik; Fellin, Phil

    2015-05-01

    Polycyclic aromatic hydrocarbon (PAH) measurements were conducted by Wood Buffalo Environmental Association (WBEA) at four community ambient Air quality Monitoring Stations (AMS) in the Athabasca Oil Sands Region (AOSR) in Northeastern Alberta, Canada. The 2012 and 2013 mean concentrations of a subset of the 22 PAH species were 9.5, 8.4, 8.8, and 32 ng m(-3) at AMS 1 (Fort McKay), AMS 6 (residential Fort McMurray), AMS 7 (downtown Fort McMurray), and AMS 14 (Anzac), respectively. The average PAH concentrations in Fort McKay and Fort McMurray were in the range of rural and semirural areas, but peak values reflect an industrial emission influence. At these stations, PAHs were generally associated with NO, NO2, PM2.5, and SO2, indicating the emissions were from the combustion sources such as industrial stacks, vehicles, residential heating, and forest fires, whereas the PAH concentrations at AMS 14 (∼35 km south of Fort McMurray) were more characteristic of urban areas with a unique pattern: eight of the lower molecular weight PAHs exhibited strong seasonality with higher levels during the warmer months. Enthalpies calculated from Clausius-Clapeyron plots for these eight PAHs suggest that atmospheric emissions were dominated by temperature-dependent processes such as volatilization at warm temperatures. These findings point to the potential importance of localized water-air and/or surface-air transfer on observed PAH concentrations in air. PMID:25844542

  8. A History of the Constructs IQ and Race: Putting "The Bell Curve" in Perspective.

    ERIC Educational Resources Information Center

    Fenwick, Leslie T.

    "The Bell Curve" by Richard Herrnstein and Charles E. Murray has created a great deal of controversy because of its assertion that the key to explaining inequality and social problems in the United States is stratification by a unitary entity called intelligence, or cognitive ability, as measured by the intelligence quotient (IQ). Their position…

  9. Family Systems Theory in the Workplace.

    ERIC Educational Resources Information Center

    Rogers, Vivian

    This paper presents a summary of Murray Brown's family systems theory as it applies to the workplace, lists some indicators of when a system is working well, and cites some other guidelines for gauging and improving one's own functioning in the work system. Major concepts of Bowen's theory include: (1) the family and the workplace are systems; (2)…

  10. "The Bell Curve" on Separated Twins.

    ERIC Educational Resources Information Center

    Fancher, Raymond E.

    1995-01-01

    "The Bell Curve" declares that studies of separated identical twins--the "purest" of "direct" methods for estimating IQ heritability--indicate a value of +.75-+.80. But, the main study cited suggests a heritability of "two-thirds" for the middle class, and Herrnstein and Murray neglect to mention numerous complicating factors in twin studies that…

  11. An Accounting International Experience Course

    ERIC Educational Resources Information Center

    Johnson, Leigh Redd; Rudolph, Holly R.; Seay, Robert A.

    2010-01-01

    Accounting students need practical opportunities to personally experience other cultures and international business practices if they are to effectively compete in today's global marketplace. In order to address this need, the Department of Accounting at Murray State University offers an international experience course which includes a short-term…

  12. The Oxford English Dictionary: A Brief History.

    ERIC Educational Resources Information Center

    Fritze, Ronald H.

    1989-01-01

    Reviews the development of English dictionaries in general and the Oxford English Dictionary (OED) in particular. The discussion covers the decision by the Philological Society to create the dictionary, the principles that guided its development, the involvement of James Augustus Henry Murray, the magnitude and progress of the project, and the…

  13. 75 FR 53665 - National Sea Grant Advisory Board

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-01

    ... National Oceanic and Atmospheric Administration National Sea Grant Advisory Board AGENCY: National Oceanic...: This notice sets forth the cancellation of a forthcoming meeting of the Sea Grant Advisory Board. DATES...: N/A. FOR FURTHER INFORMATION CONTACT: Mr. Jim Murray, National Sea Grant College Program,...

  14. Improving Educational Productivity. Research in Educational Productivity, Volume 1.

    ERIC Educational Resources Information Center

    Monk, David H., Ed.; Walberg, Herbert J., Ed.; Wang, Margaret C., Ed.

    This collection of papers focuses on the economic aspects of education as follows: (1) "Introduction" (David H. Monk, Margaret Wang, and Herbert J. Walberg); (2) "Tax Revolts and School Performance" (Thomas Downes and David Figlio); (3) "State Aid and Education Outcomes" (Sheila E. Murray); (4) "The Interface between Public and Private Schooling:…

  15. An Exploration of Factors Affecting the Academic Success of Students in a College Quantitative Business Course

    ERIC Educational Resources Information Center

    Davis, Mary M.

    2009-01-01

    The American Association of Colleges and Universities reports that over 50% of the students entering colleges and universities are academically under prepared; that is, according to Miller and Murray (2005), students "lack basic skills in at least one of the three fundamental areas of reading, writing, and mathematics" (paragraph 4). Furthermore,…

  16. Mercury: Exploration of a Planet

    NASA Technical Reports Server (NTRS)

    1976-01-01

    The flight of the Mariner 10 spacecraft to Venus and Mercury is detailed in animation and photography. Views of Mercury are featured. Also included is animation on the origin of the solar system. Dr. Bruce C. Murray, director of the Jet Propulsion Laboratory, comments on the mission.

  17. 40 CFR 81.245 - Southwest Minnesota Intrastate Air Quality Control Region.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... within the outermost boundaries of the area so delimited): In the State of Minnesota: Big Stone County..., Lyon County, McLeod County, Meeker County, Murray County, Nobles County, Pipestone County, Redwood... 40 Protection of Environment 17 2011-07-01 2011-07-01 false Southwest Minnesota Intrastate...

  18. 5 CFR Appendix C to Subpart B of... - Appropriated Fund Wage and Survey Areas

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... Ziebach Iowa: Dickinson Emmet Lyon Osceola Minnesota: Jackson Lincoln Lyon Murray Nobles Pipestone Rock... definitions for appropriated fund employees. With a few exceptions, each area is defined in terms of county... Wyoming or Eastern Tennessee. (2) Survey area definition. Lists each county, independent city, or...

  19. 75 FR 25833 - Notice of Funding Availability of Applications (NOFA) for Section 514 Farm Labor Housing Loans...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-10

    ...) Participate in local green/energy efficient building standards. Applicants who participate in a city, county... 48823, (517) 324-5192, TDD (517) 337-6795, Julie Putnam. Minnesota State Office, 375 Jackson Street...-4325, TDD (601) 965- 5850, Darnella Smith-Murray. Missouri State Office, 601 Business Loop 70...

  20. 5 CFR Appendix D to Subpart B of... - Nonappropriated Fund Wage and Survey Areas

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... area plus: Minnesota: Morrison Murray Ramsey Stearns St. Louis Wisconsin: Juneau Monroe Polk... county units or independent cities. Each wage area definition consists of: (1) Wage area title. Wage areas usually carry the title of the county or counties surveyed. (2) Survey area definition. Lists...

  1. 75 FR 9248 - Endangered and Threatened Wildlife and Plants; Permit Applications

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-01

    ... (Gammarus acherondytes) in Monroe and St. Clair Counties, Illinois. Activities are proposed for life history... States of Illinois, Indiana, Iowa, Michigan, Minnesota, Missouri, Ohio, Wisconsin, Kentucky, Florida and... Application Number: TE02344A Applicant: Mainstream Commercial Divers, Inc., Murray, Kentucky. The...

  2. 5 CFR Appendix C to Subpart B of... - Appropriated Fund Wage and Survey Areas

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... Emmet Lyon Osceola Minnesota: Jackson Lincoln Lyon Murray Nobles Pipestone Rock Tennessee Eastern... definitions for appropriated fund employees. With a few exceptions, each area is defined in terms of county... Wyoming or Eastern Tennessee. (2) Survey area definition. Lists each county, independent city, or...

  3. 75 FR 49351 - Prevailing Rate Systems; Nonappropriated Fund Wage and Survey Areas

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-13

    ... Survey Area Minnesota: Hennepin Area of Application. Survey area plus: Minnesota: Morrison Murray Ramsey.... Office of Personnel Management (OPM) issued a proposed rule (75 FR 17316) to make several minor... of county units or independent cities. Each wage area definition consists of: (1) Wage area...

  4. 40 CFR 81.245 - Southwest Minnesota Intrastate Air Quality Control Region.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... within the outermost boundaries of the area so delimited): In the State of Minnesota: Big Stone County..., Lyon County, McLeod County, Meeker County, Murray County, Nobles County, Pipestone County, Redwood... 40 Protection of Environment 18 2012-07-01 2012-07-01 false Southwest Minnesota Intrastate...

  5. 40 CFR 81.245 - Southwest Minnesota Intrastate Air Quality Control Region.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... within the outermost boundaries of the area so delimited): In the State of Minnesota: Big Stone County..., Lyon County, McLeod County, Meeker County, Murray County, Nobles County, Pipestone County, Redwood... 40 Protection of Environment 18 2013-07-01 2013-07-01 false Southwest Minnesota Intrastate...

  6. 5 CFR Appendix C to Subpart B of... - Appropriated Fund Wage and Survey Areas

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... Ziebach Iowa: Dickinson Emmet Lyon Osceola Minnesota: Jackson Lincoln Lyon Murray Nobles Pipestone Rock... definitions for appropriated fund employees. With a few exceptions, each area is defined in terms of county... Wyoming or Eastern Tennessee. (2) Survey area definition. Lists each county, independent city, or...

  7. 77 FR 8631 - Endangered and Threatened Wildlife and Plants; Determination of Endangered Status for the Rayed...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-14

    ... outlined in our proposed rule for these actions (75 FR 67552). Publication of the proposed rule opened a 60... suspension-feeders, spending their entire lives partially or completely buried within the substrate (Murray.... 8). Mill Creek--Mill Creek is a tributary of the Black River, St. Clair County, in...

  8. 76 FR 19007 - Proposed Flood Elevation Determinations

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-06

    .... Stearns County, Minnesota, and Incorporated Areas Clearwater River Approximately 60 feet None +1010.... Williamsburg County. Approximately 745 feet None +52 upstream of Mulberry Road. Murray Swamp At the Johnsons....; Reorganization Plan No. 3 of 1978, 3 CFR, 1978 Comp., p. 329; E.O. 12127, 44 FR 19367, 3 CFR, 1979 Comp., p....

  9. 75 FR 43537 - Mortgagee Review Board: Administrative Actions

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-26

    ... against HUD-approved mortgagees. FOR FURTHER INFORMATION CONTACT: Nancy A. Murray, Secretary to the.... Bank of Clark County, Vancouver, WA. 122. Bankcredit Mortgage Inc., Boca Raton, FL (Titles 1 & 2). 123..., FL. 301. Familyhomeloans.Net, Inc., Laguna Hills, CA. 302. Farmers State Bank of Fulton...

  10. 5 CFR Appendix C to Subpart B of... - Appropriated Fund Wage and Survey Areas

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... Emmet Lyon Osceola Minnesota: Jackson Lincoln Lyon Murray Nobles Pipestone Rock Tennessee Eastern... definitions for appropriated fund employees. With a few exceptions, each area is defined in terms of county... Wyoming or Eastern Tennessee. (2) Survey area definition. Lists each county, independent city, or...

  11. 40 CFR 81.245 - Southwest Minnesota Intrastate Air Quality Control Region.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... within the outermost boundaries of the area so delimited): In the State of Minnesota: Big Stone County..., Lyon County, McLeod County, Meeker County, Murray County, Nobles County, Pipestone County, Redwood... 40 Protection of Environment 17 2010-07-01 2010-07-01 false Southwest Minnesota Intrastate...

  12. 75 FR 8896 - Notice of Funding Availability (NOFA) for Loan Guarantees Under Section 538 Guaranteed Rural...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-02-26

    .... Minnesota State Office, 375 Jackson Street, Suite 410, St. Paul, MN 55101-1853, (651) 602-7804, TDD (651..., Jackson, MS 39269, (601) 965-4326, TDD (601) 965- 5717, Darnella Smith-Murray. Missouri State Office, 601... number. Borrower Address, including County. Insert borrower's address and county. Borrower Phone...

  13. 75 FR 22095 - Notice of Funds Availability for the Section 533 Housing Preservation Grants for Fiscal Year 2010

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-27

    ... OMB and published in the Federal Register on June 27, 2003 (68 FR 38402-38405). The Department of... Minnesota State Office 375 Jackson Street Building, Suite 410 St. Paul, Minnesota 55125 (651) 602-7804 TDD... Street Jackson, Mississippi 39269 (601) 965-4325 TDD (601) 965-5850 Darnella Smith-Murray Missouri...

  14. 78 FR 49451 - Notice of Funds Availability (NOFA) Inviting Applications for the Rural Community Development...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-14

    ..., Christine M. Maxwell Minnesota State Office, 410 Farm Credit Service Building, 375 Jackson Street, St. Paul..., Darnella Smith-Murray Missouri State Office, 601 Business Loop 70 West, Parkade Center, Suite 235, Columbia... representing an incorporated city, town, village, county, township, parish, or borough whose income is at...

  15. 78 FR 76173 - Endangered and Threatened Wildlife and Plants; Permit Applications

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-16

    ...-Monroe and Yellowwood State Forests in Brown, Monroe, and Morgan Counties, IN. The applicant requests.... (Donald Fortenbery, P.I.), Murray, KY. The applicant requests authorization to renew and amend an existing..., Michigan, Minnesota, Mississippi, Missouri, Ohio, Pennsylvania, Tennessee, West Virginia, and Wisconsin...

  16. 78 FR 32416 - Minnesota; Major Disaster and Related Determinations

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-30

    ... Minnesota have been designated as adversely affected by this major disaster: Cottonwood, Jackson, Murray, Nobles, and Rock Counties for Public Assistance. All counties within the State of Minnesota are eligible... SECURITY Federal Emergency Management Agency Minnesota; Major Disaster and Related Determinations...

  17. 5 CFR Appendix D to Subpart B of... - Nonappropriated Fund Wage and Survey Areas

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... Area of application. Survey area plus: Minnesota: Morrison Murray Ramsey Stearns St. Louis Wisconsin... county units or independent cities. Each wage area definition consists of: (1) Wage area title. Wage areas usually carry the title of the county or counties surveyed. (2) Survey area definition. Lists...

  18. 40 CFR 81.245 - Southwest Minnesota Intrastate Air Quality Control Region.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... within the outermost boundaries of the area so delimited): In the State of Minnesota: Big Stone County..., Lyon County, McLeod County, Meeker County, Murray County, Nobles County, Pipestone County, Redwood... 40 Protection of Environment 18 2014-07-01 2014-07-01 false Southwest Minnesota Intrastate...

  19. 75 FR 68704 - Suspension of Community Eligibility

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-11-09

    .... Minnesota: Balaton, City of, Lyon 270553 July 26, 1974, ......do do. County. Emerg; August 19, 1985, Reg..., Reg; November 26, 2010, Susp. Murray, Village of, Cass 310305 June 30, 1976, ......do do. County... FR 51735. Executive Order 13132, Federalism. This rule involves no policies that have...

  20. 5 CFR Appendix C to Subpart B of... - Appropriated Fund Wage and Survey Areas

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... Ziebach Iowa: Dickinson Emmet Lyon Osceola Minnesota: Jackson Lincoln Lyon Murray Nobles Pipestone Rock... definitions for appropriated fund employees. With a few exceptions, each area is defined in terms of county... Wyoming or Eastern Tennessee. (2) Survey area definition. Lists each county, independent city, or...

  1. 76 FR 73011 - Pipeline and Hazardous Materials Safety Administration

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-28

    ... commerce of i) and anhydrous hydrogen 173.244(a)(2). fluoride in a DOT 112S5001 car with a minimum shell... peroxides in packaging with labeling allowed prior to changes promulgated under HM-215I. (mode 1) 15440-N... America LLC, 180.212(a) and transportation in Murray Hill, 180.212(b)(2). commerce of NJ....

  2. 33 CFR 165.817 - Arkansas River, Mile 118.2 to 125.4, Little Rock Arkansas-regulated navigation area.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... so as to avoid a meeting situation in the RNA. (d) Refer to 33 CFR 117.123 for drawbridge operation... of high velocity flow, defined as the flow rate of 70,000 cubic feet per second or more at the Murray... high velocity flow may only occur under the following conditions: (1) Vessels may not meet or pass...

  3. 33 CFR 165.817 - Arkansas River, Mile 118.2 to 125.4, Little Rock Arkansas-regulated navigation area.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... so as to avoid a meeting situation in the RNA. (d) Refer to 33 CFR 117.123 for drawbridge operation... of high velocity flow, defined as the flow rate of 70,000 cubic feet per second or more at the Murray... high velocity flow may only occur under the following conditions: (1) Vessels may not meet or pass...

  4. 33 CFR 165.817 - Arkansas River, Mile 118.2 to 125.4, Little Rock Arkansas-regulated navigation area.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... so as to avoid a meeting situation in the RNA. (d) Refer to 33 CFR 117.123 for drawbridge operation... of high velocity flow, defined as the flow rate of 70,000 cubic feet per second or more at the Murray... high velocity flow may only occur under the following conditions: (1) Vessels may not meet or pass...

  5. 33 CFR 165.817 - Arkansas River, Mile 118.2 to 125.4, Little Rock Arkansas-regulated navigation area.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... so as to avoid a meeting situation in the RNA. (d) Refer to 33 CFR 117.123 for drawbridge operation... of high velocity flow, defined as the flow rate of 70,000 cubic feet per second or more at the Murray... high velocity flow may only occur under the following conditions: (1) Vessels may not meet or pass...

  6. Professionalization, Partnership, and Power: Building Professional Development Schools. SUNY Series, Frontiers in Education.

    ERIC Educational Resources Information Center

    Petrie, Hugh G., Ed.

    This volume presents a variety of different implementations of the professional development school concept of teacher education in the following 17 author-contributed chapters: "School-University Partnerships and Partner Schools" (John Goodlad); "Design Principles and Criteria for Professional Development Schools" (Frank Murray); "The Professional…

  7. Tree Hydraulics: How Sap Rises

    ERIC Educational Resources Information Center

    Denny, Mark

    2012-01-01

    Trees transport water from roots to crown--a height that can exceed 100 m. The physics of tree hydraulics can be conveyed with simple fluid dynamics based upon the Hagen-Poiseuille equation and Murray's law. Here the conduit structure is modelled as conical pipes and as branching pipes. The force required to lift sap is generated mostly by…

  8. "The Bell Curve" and Its Critical Progeny: A Review.

    ERIC Educational Resources Information Center

    Davis, Alan

    1997-01-01

    Discusses R. Herrnstein's and C. Murray's attempt to persuade an educated white readership that they, the readers, are genetically, socially, and intellectually superior. The most effective criticisms are those that rely on scientific evidence about the manipulation of data and flawed analyses rather than the display of moral outrage. (SLD)

  9. Artmaking, Subjectivity, and Signification

    ERIC Educational Resources Information Center

    Walker, Sydney

    2009-01-01

    Drawing upon Lacanian psychoanalytic theory, neuroscience brain research, and the practices of contemporary artists Ann Hamilton, Jasper Johns, Elizabeth Murray, and Oliver Herring, this article argues for the relevance of conscious and unconscious knowledge in artistic practice. Parallels drawn between Lacanian psychoanalytic clinical practice…

  10. The Teaching of Political Science in Developing Countries

    ERIC Educational Resources Information Center

    Navarro, Raul Bejar; And Others

    1978-01-01

    College level political science teaching in developing nations will be more relevant to students if it is developed within an interdisciplinary framework and is related to theories of organization, conflict, and social ecology. Journal available from UNIPUB, Box 433, Murray Hill Station, New York, New York 10016. (Author/DB)

  11. Dostoevsky: A Collection of Critical Essays. Twentieth Century Views Series.

    ERIC Educational Resources Information Center

    Wellek, Rene, Ed.

    One of a series of works aimed at presenting contemporary opinion on major authors, this collection includes essays by Rene Wellek, Philip Rahv, Murray Krieger, Irving Howe, Eliseo Vivas, D. H. Lawrence, Sigmund Freud, Dmitri Chizhevsky, V. V. Zenkovsky, Georg Lukacs, and Derek Traversi--all dealing with the biography and literary work of…

  12. Integrity in HRD.

    ERIC Educational Resources Information Center

    1997

    This document contains four papers from a symposium on integrity in human resource development (HRD). "The Effects of Blame Attributions and Justice Violations on Revenge and Forgiveness in the Workplace" (Murray O. Bradfield, Karl Aquino, Doug Stanwyck) describes a test of a mediated model, postulating that thoughts of revenge mediated…

  13. 40 CFR 81.337 - Oklahoma.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... County Latimer County Love County Marshall County McIntosh County Murray County Okfuskee County Pittsburg... County Coal County Garvin County Haskell County Hughes County Johnston County Latimer County Love County... Unclassifiable/Attainment. Love County Unclassifiable/Attainment. Major County...

  14. 40 CFR 81.337 - Oklahoma.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ..., see the List of CFR Sections Affected, which appears in the Finding Aids section of the printed volume... Haskell County Hughes County Johnston County Latimer County Love County Marshall County McIntosh County... Hughes County Johnston County Latimer County Love County Marshall County McIntosh County Murray...

  15. 40 CFR 81.337 - Oklahoma.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... County Latimer County Love County Marshall County McIntosh County Murray County Okfuskee County Pittsburg... County Coal County Garvin County Haskell County Hughes County Johnston County Latimer County Love County... Unclassifiable/Attainment. Love County Unclassifiable/Attainment. Major County...

  16. Notes on Linguistics, 1994.

    ERIC Educational Resources Information Center

    Payne, David, Ed.

    1994-01-01

    This document contains the 1994 edition of a publication designed to share information in the field of linguistics that is of practical, theoretical, administrative, or general interest. Articles in these issues include: "Ethnography Vs. Questionnaire" (Thomas E. Murray); "Differences: A Diary Entry"--concerning structuralism and deconstruction…

  17. Ezra Pound: A Collection of Critical Essays. Twentieth Century Views Series.

    ERIC Educational Resources Information Center

    Sutton, Walter, Ed.

    One of a series of works aimed at presenting contemporary critical opinion on major authors, this collection includes essays by Walter Sutton, William Butler Yeats, William Carlos Williams, T. S. Eliot, F. R. Leavis, Hugh Kenner, M. L. Rosenthal, Forrest Read, David W. Evans, W. M. Frohock, Harold H. Watts, Earl Miner, Murray Schafer, J. P.…

  18. Schooling Makes You Smarter: What Teachers Need to Know about IQ

    ERIC Educational Resources Information Center

    Nisbett, Richard E.

    2013-01-01

    In 1994, America took a giant step backward in understanding intelligence and how it can be cultivated. Richard Herrnstein, a psychology professor at Harvard University, and Charles Murray, a political scientist with the American Enterprise Institute, published "The Bell Curve," a best-selling book that was controversial among researchers, but was…

  19. 78 FR 64024 - National Industrial Security Program Policy Advisory Committee (NISPPAC)

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-25

    ... RECORDS ADMINISTRATION Information Security Oversight Office National Industrial Security Program Policy... Industrial Security Program policy matters. DATES: The meeting will be held on November 14, 2013 from 10:00 a... NISPPAC@nara.gov . Dated: October 21, 2013. Patrice Little Murray, Acting Committee Management...

  20. 78 FR 38077 - National Industrial Security Program Policy Advisory Committee (NISPPAC)

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-25

    ... RECORDS ADMINISTRATION Information Security Oversight Office National Industrial Security Program Policy... Industrial Security Program policy matters. DATES: The meeting will be held on July 17, 2013 from 10:00 a.m... NISPPAC@nara.gov . Dated: June 19, 2013. Patrice Little Murray, Acting Committee Management...

  1. Organizational Learning, Change and Socialization. Symposium.

    ERIC Educational Resources Information Center

    2002

    This symposium is comprised of three papers on organizational learning, change, and socialization. "A Study of the Organizational Learning Profile (OLP)" (Rae Dorai, Adela J. McMurray) reports findings that show the OLP (Pace et al. 1998) is a reliable instrument for measuring organizational learning and its content validity is high. "The Ability…

  2. Addressing South Africa's Engineering Skills Gaps

    ERIC Educational Resources Information Center

    Hall, Jonathan; Sandelands, Eric

    2009-01-01

    Purpose: This paper aims to provide a case study of how engineering skills gaps are being addressed by Murray & Roberts in South Africa. Design/methodology/approach: The paper focuses on skills challenges in South Africa from a reflective practitioner perspective, exploring a case example from an industry leader. Findings: The paper explores how…

  3. College Distance from Home: Implications for Student Transfer Behavior

    ERIC Educational Resources Information Center

    Mattern, Krista D.; Wyatt, Jeffrey N.; Shaw, Emily J.

    2013-01-01

    This study explored college distance from home, a possible contributing factor of transfer behavior. Because the distance between a student's home and college has been found to be related negatively to social integration and positively to homesickness (i.e., Brooks & DuBois, 1995; Fisher, Murray, & Frazer, 1985; Tognoli, 2003), a…

  4. New Perspectives on School Integration.

    ERIC Educational Resources Information Center

    Friedman, Murray, Ed.; And Others

    Sixteen essays dealing with issues surrounding school desegregation and racial integration comprise this book: (1) "School Integration Today: The Case for New Definitions," by Murray Friedman; (2) "Defining Brown's Integration Remedy for Urban School Systems," by Derrick A. Bell, Jr.; (3) "School Desegregation Can Succeed: The Pennsylvania…

  5. American Business and the Public School: Case Studies of Corporate Involvement in Public Education.

    ERIC Educational Resources Information Center

    Levine, Marsha, Ed.; Trachtman, Roberta, Ed.

    This document provides case studies, written by the people involved, of the following private sector/public school collaborations: (1) Honeywell; (2) Metropolitan Life Insurance and the American Educator; (3) Burger King Corporation; (4) Murray Bergtraum High School for Business Careers; (5) The Public Education Fund; (6) The Boston Compact; and…

  6. Wicked Learning: Reflecting on "Learning to Be Drier"

    ERIC Educational Resources Information Center

    Golding, Barry; Brown, Mike; Foley, Annette; Smith, Erica; Campbell, Coral; Schulz, Christine; Angwin, Jennifer; Grace, Lauri

    2009-01-01

    In this final, collaborative paper in the "Learning to be drier" edition, we reflect on and draw together some of the key threads from the diverse narratives in our four site papers from across the southern Murray-Darling Basin. Our paper title, "Wicked learning", draws on a recent body literature (Rittel & Webber 1973) about messy or "wicked…

  7. Sarcoidosis

    MedlinePlus

    ... the elbow Sarcoidosis on the nose and forehead Respiratory system References Judson MA, Morgenthau AS, Baughman RP. Sarcoidosis. In: Broaddus VC, Mason RJ, Ernst JD, et al, eds. Murray and Nadel's Textbook of Respiratory Medicine . 6th ed. Philadelphia, PA: Elsevier Saunders; 2016: ...

  8. Pulmonary veno-occlusive disease

    MedlinePlus

    ... disorder. Alternative Names Pulmonary vaso-occlusive disease Images Respiratory system References Channick RN, Rubin LJ. Pulmonary hypertension. In: Mason RJ, Broaddus VC, Martin TR, et al., eds. Murray and Nadel's Textbook of Respiratory Medicine . 5th ed. Philadelphia, PA: Elsevier Saunders; 2010: ...

  9. Mesothelioma - benign-fibrous

    MedlinePlus

    ... fibroma; Solitary fibrous tumor of the pleura Images Respiratory system References Broaddus VC, Robinson BWS. Tumors of the pleura. In: Mason RJ, Broaddus VC, Martin TR, et al, eds. Murray and Nadel's Textbook of Respiratory Medicine . 5th ed. Philadelphia, PA: Elsevier Saunders; 2010: ...

  10. Viral pneumonia

    MedlinePlus

    ... Names Pneumonia - viral; "Walking pneumonia" - viral Images Lungs Respiratory system References Lee FE, Treanor J. Viral infections. In: Mason RJ, VC Broaddus, Martin TR, et al, eds. Murray and Nadel’s Textbook of Respiratory Medicine . 5th ed. Philadelphia, PA: Saunders Elsevier; 2010: ...

  11. Solitary pulmonary nodule

    MedlinePlus

    ... chest x-ray Pulmonary nodule, solitary - CT scan Respiratory system References Gotway MB, Panse PM, Gruden JF, Elicker BM. Thoracic radiology. In: Broaddus VC, Mason RJ, Ernst JD, et al, eds. Murray and Nadel's Textbook of Respiratory Medicine . 6th ed. Philadelphia, PA: Elsevier Saunders; 2016: ...

  12. 75 FR 65052 - Notice of Final Federal Agency Actions on Proposed Highway in California

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-10-21

    ... Road past the northbound SR-163 on-ramp; widen the western portion of Frazee Road immediately north and... at Friars Road/ Ulric Street, Ulric Street/southbound SR-163 on-ramp; Friars Road/ northbound SR-163 on-ramp; and Frazee Road/Murray Canyon Road; and construct 15 retaining walls and 9 noise...

  13. "The Bell Curve": Rising Fears, Fallen Dreams.

    ERIC Educational Resources Information Center

    Kavanagh, Moya

    1995-01-01

    Hernnstein and Murray raise the specter of a cognitively stratified society that is resistant to change because of heredity and that serves the interests and perpetuates the advantages of the cognitive elite. The authors' policy remedies that focus on the individual and local community can do little to promote genuine equality and social justice.…

  14. 75 FR 41858 - Notice of Termination of License by Implied Surrender and Soliciting Comments, Protests, and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-19

    ... Comments, Protests, and Motions To Intervene July 9, 2010. Take notice that the following hydroelectric... Contact: Diane Murray, (202) 502-8838. h. Deadline for filing comments, protests, and motions to intervene: August 9, 2010. Comments, Motions to Intervene, and Protests may be filed electronically via the...

  15. 33 CFR 117.123 - Arkansas Waterway.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Arkansas Waterway. 117.123 Section 117.123 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES... this section either before departing Murray Lock and Dam or before departing the mooring cells at...

  16. Beyond Smash and Crash: Part Two

    ERIC Educational Resources Information Center

    McCarthy, Ray; Slater, Roy

    2011-01-01

    STEM studies and technological literacy are hot topics at the national and state level. At the October 20, 2009 Massachusetts STEM Summit, Lt. Governor Tim Murray spoke of the need for greater efforts in preparing our students for their technological future. In workshops throughout the day, speakers reiterated the same thing in many ways: neither…

  17. Extending the Principles of Intensive Writing to Large Macroeconomics Classes

    ERIC Educational Resources Information Center

    Docherty, Peter; Tse, Harry; Forman, Ross; McKenzie, Jo

    2010-01-01

    The authors report on the design and implementation of a pilot program to extend the principles of intensive writing outlined by W. Lee Hansen (1998), Murray S. Simpson and Shireen E. Carroll (1999) and David Carless (2006) to large macroeconomics classes. The key aspect of this program was its collaborative nature, with staff from two specialist…

  18. Melville: A Collection of Critical Essays. Twentieth Century Views Series.

    ERIC Educational Resources Information Center

    Chase, Richard, Ed.

    One of a series of works aimed at presenting contemporary critical opinion on major authors, this collection includes essays by Richard Chase, D. H. Lawrence, Newton Arvin, Alfred Kazin, Henry A. Murray, R. P. Blackmur, Marius Bewley, Richard Harter Fogle, Daniel G. Hoffman, Robert Penn Warren, and F. O. Matthiessen--all dealing with the biography…

  19. Hiring the Next Generation of Faculty. New Directions for Community Colleges, Number 152

    ERIC Educational Resources Information Center

    Cejda, Brent D., Ed.; Murray, John P., Ed.

    2011-01-01

    This volume contains the following papers: (1) Preparing to Hire the Best in the Perfect Storm (John P. Murray); (2) New Faculty Issues: Fitting In and Figuring It Out (Pamela L. Eddy); (3) An Approach to a Faculty Professional Development Seminar (Mary Bendickson and Karen Griffin); (4) Faculty Issues in Rural Community Colleges (Brent D. Cejda);…

  20. Bearing the Risk: Learning to Be Drier Mid-River

    ERIC Educational Resources Information Center

    Golding, Barry; Angwin, Jennifer

    2009-01-01

    This paper investigates learning related to the phenomena of drying over the past decade in the southern Murray-Darling Basin in Australia, as perceived in a mid-river site within the western Riverina of New South Wales, Australia. The insights from audio-recorded interviews, with a wide range of adults across the water-dependent community, mostly…

  1. Intermountain Leisure Symposium Proceeding (Provo, Utah, November 17, 1983).

    ERIC Educational Resources Information Center

    Catherall, Thomas, Ed.; Hafen, William J., Ed.

    The following papers are included in these proceedings: (1) "A Needs Assessment for Computer Applications" (Bruce Holley); (2) "The Home, School, Community Partnership through Community Education" (Jim Burgon); (3) "Building Level Coordinators--How They Spend Their Time" (Burton Olsen and Murray Meszaros); (4) "Programming and Financing the…

  2. And Academic Sexism Too: A Comment on "The Bell Curve."

    ERIC Educational Resources Information Center

    Coulter, Rebecca Priegert

    1995-01-01

    Like the "scientific" approaches of craniometry and eugenics, Herrnstein and Murray's methods and arguments reveal an ideological position not only on African Americans but also on the role of women. Points out their focus on women in discussions of "illegitimacy," birth control, and parenting, and their targeting of poor women, purportedly of low…

  3. "The Bell Curve": Another Chapter in the Continuing Political Economy of Racism.

    ERIC Educational Resources Information Center

    Newby, Robert G.; Newby, Diane E.

    1995-01-01

    Criticizes Charles Murray's "The Bell Curve" and attempts a more cogent analysis of the respective roles of blacks and the U.S. political economy. Utilizes a sociology of knowledge framework to discuss the evolving nature of blacks in the nation's workforce. Briefly discusses eugenics and the history of racist social theories. (MJP)

  4. "The Bell Curve" and Carrie Buck: Eugenics Revisited.

    ERIC Educational Resources Information Center

    Smith, J. David

    1995-01-01

    The 1994 publication of "The Bell Curve" by R. Herrnstein and C. Murray is compared to other examples of eugenic principles, including the sterilization of "feebleminded" Carrie Buck, family degeneracy studies focusing on lower class Caucasian families, and other works that view the poorest and least educated members of society as problems for…

  5. For Whom the Bell Curves: Old Texts, Mental Retardation, and the Persistent Argument.

    ERIC Educational Resources Information Center

    Smith, J. David

    1995-01-01

    A review of secondary education and college biology textbooks published from 1900 through 1950 finds strong support for eugenics and Social Darwinism. These attitudes are related to effects of such recent books as "The Bell Curve" (by R. Herrnstein and C. Murray) for people with mental retardation. (DB)

  6. Where's the Other "C"? Year 9 Examine Continuity in the Treatment of Mental Health through Time

    ERIC Educational Resources Information Center

    Murray, Helen; Burney, Rachel; Stacey-Chapman, Andrew

    2013-01-01

    Helen Murray, Rachel Burney and Andrew Stacey-Chapman show how they strengthened three goals of their practice--secure knowledge, narrative shapes and conceptual analysis--by securing strong connection between them. The curricular focus that drew all this together was "historical continuity", a property crucial to narrative, but often…

  7. Proceedings of the Annual Conference of the Association of Private Enterprise Education (11th, San Antonio, Texas, April 6-8,. 1986).

    ERIC Educational Resources Information Center

    Journal of Private Enterprise, 1986

    1986-01-01

    Papers in these proceedings are grouped under the following headings: addresses, entrepreneurship, entrepreneurship education, free market economics, public policy, and economic education. Papers include "Economic Freedom and Private Enterprise" (Murray L. Weidenbaum); "Marxism and the Free, Capitalist Society" (Tibor R. Machan); "Knowledge,…

  8. 75 FR 53707 - Homeland Security Advisory Council

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-01

    ... SECURITY Homeland Security Advisory Council AGENCY: The Office of Policy, DHS. ACTION: Notice of Open Teleconference Federal Advisory Committee Meeting. SUMMARY: The Homeland Security Advisory Council (HSAC) will...: Homeland Security Advisory Council, Department of Homeland Security, Mailstop 0850, 245 Murray Lane,...

  9. Erratum.

    PubMed

    1984-07-20

    In the credit for the photograph on page 1086 of the issue of 8 June accompanying the Research News article "Crystal anisotropy directs solidification" by Arthur L. Robinson (p. 1085), Kurt Nassau's affiliation is incorrectly given as Western Electric. Nassau is at AT&T Bell Laboratories, Murray Hill, New Jersey.

  10. The Use of Learning and Study Strategies by College Freshmen.

    ERIC Educational Resources Information Center

    Hulick, Chuck; Higginson, Bonnie

    This paper reports on an investigation of study strategies of 514 college freshmen at Murray State University (Kentucky) enrolled in a Freshman Orientation class. A demographic questionnaire and the Learning and Study Strategies Inventory (LASSI) were administered. Responses on the LASSI are categorized into ten subscales (attitude, motivation,…

  11. Reauthorizing the Higher Education Act: Opportunities to Improve Student Success. Additional Submitted Testimony from Lashawn Richburg-Hayes, MDRC, to the Senate Committee on Health, Education, Labor, and Pensions

    ERIC Educational Resources Information Center

    Richburg-Hayes, Lashawn

    2015-01-01

    MDRC is pleased to have this opportunity to provide additional information for the consideration of Chairman Alexander, Ranking Member Murray, and members of the Committee on ways research can be used to improve the academic success of low-income college students. The goal of this additional testimony is to reiterate the second recommendation in…

  12. Language Acquisition in a Unification-Based Grammar Processing System Using a Real-World Knowledge Base.

    ERIC Educational Resources Information Center

    Russell, Dale W.

    An obstacle in Natural Language understanding is the existence of lexical gaps, i.e. words or word senses that are not in the lexicon of the system. This thesis describes the implementation of MURRAY, a learning mechanism which infers the properties of a new lexical item from its syntactical environment and infers its meaning based on context and…

  13. Cross-Talk in Comp Theory: A Reader. Second Edition, Revised and Updated.

    ERIC Educational Resources Information Center

    Villanueva, Victor, Ed.

    This revised and updated resource contains a total of 43 essays that serve to initiate graduate students and more experienced teachers into the theories that inform composition studies. Under Section One--The Givens in Our Conversations: The Writing Process--are these essays: "Teach Writing as a Process Not Product" (Donald M. Murray); "Writing as…

  14. Introduction to Music Theory and Aural Skills: A Study in Developing an Interactive Music Learning Environment for the Internet.

    ERIC Educational Resources Information Center

    Steffa, John A.

    In the Fall of 1998, a World Wide Web course called "Introduction to Music Theory and Aural Skills" was published at Murray State University (Kentucky) as an interactive and self-contained learning environment to provide a partial solution to the problem of incoming music students' inadequate preparation in fundamental music theory concepts. This…

  15. "Process and Intention": A Thirtieth-Year Reflection

    ERIC Educational Resources Information Center

    Gebhardt, Richard

    2011-01-01

    "Process and Intention: A Bridge from Theory to Classroom" is rooted in a time when intuitive, experience-based awareness that we should "Teach Writing as a Process Not Product" (Murray 3) was bolstered by systematic research into the complexity of writing. Lots of years have passed since those days, so as a reminder, the author mentions five…

  16. Bovine TB and the 'singleton protocol': reward without risk

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The ‘Singleton Protocol” was initiated in 1996 by the Irish Department of Agriculture Fisheries and Food to address the shortfall in specificity of the single intradermal comparative cervical test (SICCT) for bTB. Findings from Murray et al., demonstrate that singleton candidates (i.e., from low ris...

  17. From Poverty to Prosperity: Literacy's Impact on Canada's Economic Success. Summary

    ERIC Educational Resources Information Center

    Murray, Scott; Shillington, Richard

    2011-01-01

    To persuade policy makers to tackle poverty prevention through significant investment in literacy development, the authors, Murray and Shillington, analyzed the most recent data to illustrate the impact of literacy skills on a micro-, as well as macro-economic level. Statistics clearly show direct links between literacy skill and income level:…

  18. 77 FR 17478 - Change in Bank Control Notices; Acquisitions of Shares of a Bank or Bank Holding Company

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-26

    ..., Minneapolis, Minnesota 55480-0291: 1. Sharon Bauman, Apple Valley, Minnesota; Virginia Bauman, Farmington, Minnesota; and Michael Murray, Irving, Texas, Florence Bauman, and Russell Bauman, both of Kerkhoven, Minnesota, as individuals and members of the Bauman Family Control Group; to acquire and retain...

  19. Concepts of Identity: East and West.

    ERIC Educational Resources Information Center

    Bailey, William

    Rhetorical discourse and poetic discourse are distinct and must be studied accordingly. Rhetorical discourse treats the world pragmatically, whereas poetic discourse contains an aspect of decoration. Murray Krieger, as a representative of the New Criticism, claims that rhetorical discourse dualizes and alienates man from his world but that poetic…

  20. An Exploratory Study on the Assessment of Pre-Service Teacher Dispositions by Teacher Education Programs in Iowa

    ERIC Educational Resources Information Center

    Brindle, Sharon Evans

    2012-01-01

    Problem: Within the higher education community there is discourse regarding teacher dispositions and the assessment of dispositions. Murray (2007) and Damon (2007) posited that additional scholarship and research were needed to provide a meaningful construct of dispositions. With this lack of consensus, teacher education programs need to explore…

  1. 76 FR 28767 - Desert Southwest Customer Service Region-Rate Order No. WAPA-152

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-18

    ... Area Power Administration Desert Southwest Customer Service Region-Rate Order No. WAPA-152 AGENCY.... FOR FURTHER INFORMATION CONTACT: Mr. Darrick Moe, Regional Manager, Desert Southwest Customer Service... moe@wapa.gov , or Mr. Jack Murray, Rates Manager, Desert Southwest Customer Service Region,...

  2. Empowering Workers to Rebuild America's Economy and Longer-Term Competitiveness: Green Skills Training for Workers. Hearing of the Committee on Health, Education, Labor, and Pensions, United States Senate, One Hundred Eleventh Congress, First Session on Examining Empowering Workers to Rebuild America's Economy and Longer-Term Competitiveness, Focusing on Green Skills Training for Workers (April 21, 2009). Senate Hearing 111-813

    ERIC Educational Resources Information Center

    US Senate, 2011

    2011-01-01

    Among the topics discussed in this hearing were: what constitutes green energy, how workers can best be provided the skills to thrive in green industries, and the future of America's energy and environmental policies. Statements were presented by: Honorable Patty Murray, a U.S. Senator from the State of Washington, opening statement; Honorable…

  3. Observation Tools for Professional Development

    ERIC Educational Resources Information Center

    Malu, Kathleen F.

    2015-01-01

    Professional development of teachers, including English language teachers, empowers them to change in ways that improve teaching and learning (Gall and Acheson 2011; Murray 2010). In their seminal research on staff development--professional development in today's terms--Joyce and Showers (2002) identify key factors that promote teacher change.…

  4. Schooling in Capitalism: Navigating the Bleak Pathways of Structural Fate

    ERIC Educational Resources Information Center

    Murray, Kevin; Liston, Daniel P.

    2015-01-01

    In this review essay Kevin Murray and Dan Liston examine three texts in what this symposium has deemed the recent resurgence in neo-Marxist accounts of schooling: David Blacker's "The Falling Rate of Learning and the Neoliberal Endgame," Mike Cole's "Marxism and Educational Theory," and John Marsh's "Class Dismissed."…

  5. Anxiety and Overgener a lization: Negative Results

    ERIC Educational Resources Information Center

    Murray, E. Neil

    1969-01-01

    Research supported in part by a United States Public Health Service grant. Article based on a PhD thesis submitted to the University of Pittsburgh. Reprints from: E.N. Murray, Dept of Psychology, State Univ of N.Y., Buffalo, N.Y.

  6. The influence of boundary conditions on wall shear stress distribution in patients specific coronary trees.

    PubMed

    van der Giessen, Alina G; Groen, Harald C; Doriot, Pierre-André; de Feyter, Pim J; van der Steen, Antonius F W; van de Vosse, Frans N; Wentzel, Jolanda J; Gijsen, Frank J H

    2011-04-01

    Patient specific geometrical data on human coronary arteries can be reliably obtained multislice computer tomography (MSCT) imaging. MSCT cannot provide hemodynamic variables, and the outflow through the side branches must be estimated. The impact of two different models to determine flow through the side branches on the wall shear stress (WSS) distribution in patient specific geometries is evaluated. Murray's law predicts that the flow ratio through the side branches scales with the ratio of the diameter of the side branches to the third power. The empirical model is based on flow measurements performed by Doriot et al. (2000) in angiographically normal coronary arteries. The fit based on these measurements showed that the flow ratio through the side branches can best be described with a power of 2.27. The experimental data imply that Murray's law underestimates the flow through the side branches. We applied the two models to study the WSS distribution in 6 coronary artery trees. Under steady flow conditions, the average WSS between the side branches differed significantly for the two models: the average WSS was 8% higher for Murray's law and the relative difference ranged from -5% to +27%. These differences scale with the difference in flow rate. Near the bifurcations, the differences in WSS were more pronounced: the size of the low WSS regions was significantly larger when applying the empirical model (13%), ranging from -12% to +68%. Predicting outflow based on Murray's law underestimates the flow through the side branches. Especially near side branches, the regions where atherosclerotic plaques preferentially develop, the differences are significant and application of Murray's law underestimates the size of the low WSS region.

  7. Curiosity explores the base of Aeolis Mons, Gale crater, Mars: Recent Geological and Geochemical Mission Results

    NASA Astrophysics Data System (ADS)

    Gupta, Sanjeev; Vasavada, Ashwin; Crisp, Joy; Grotzinger, John

    2016-04-01

    The Mars Science Laboratory (MSL) Curiosity rover has been exploring sedimentary rocks at the foothills of Aolis Mons since August 2014. Here, an array of fluvial, lacustrine and aeolian strata that show a complex pattern of post-depositional alteration are present. This presentation will summarize the most recent geological and geochemical findings of the MSL mission. Basal outcrops that form the lowest stratigraphic unit of Aeolis Mons, the Murray formation, are characterized predominantly by mudstones with minor intercalated sandstones. The mudstone facies, originally identified at the Pahrump Hills field site, show abundant fine-scale planar laminations throughout the Murray formation succession and is interpreted to record deposition in an ancient lacustrine system in Gale crater. Interbedded cross-stratified sandstones are considered to record fluvio-deltaic incursions into the lake. The lacustrine deposits of the Murray formation are unconformably overlain by much younger sandstones of the Stimson formation. Orbital mapping and in situ observations indicate that the basal strata of the Stimson formation show complex onlap relationships with the underlying Murray formation strata signifying that there was metre-scale palaeotopographic relief on the unconformity surface upon which the Stimson accumulated. The Stimson formation itself is characterized by cross-bedded sandstones with cross-bed sets tens of centimetres in thickness. Sedimentological observations suggest that the Stimson dominantly records deposition by aeolian dunes. Curiosity has made detailed measurements of the geochemistry of the Murray and Stimson formations and associated diagenetic features. Perhaps most surprising has been the discovery of extensive silica enrichment both within mudstones of the Murray formation, perhaps of primary sedimentary or later diagenetic origin, also in as fracture-related diagenetic halos within the Stimson formation. We will describe the nature of this silica

  8. Acting Locally and Globally: Dissemination and Implementation Around the World and Next Door

    PubMed Central

    Southam-Gerow, Michael A.; Arnold, Cassidy C.; Rodriguez, Adriana; Cox, Julia R.

    2014-01-01

    Murray et al. (this issue) present a fascinating account of their international dissemination and implementation (D&I) research focused on training therapists in Thailand and Iraq to provide a modular treatment approach called Common Elements Treatment Approach to youth. In this commentary, we use Murray et al. as a springboard to discuss a few general conclusions about the current direction of D&I research. Specifically, we reflect on current D&I models, highlighting their ecological focus and their emphasis on stakeholder involvement. Next, we discuss the central importance of implementation supports such as treatment programs, training approaches, assessment and outcome monitoring tools, and organizational interventions. We conclude with a consideration of how D&I work that aims to adapt implementation supports for local needs represent a key path to our goal of sustainability. PMID:25620868

  9. Organic Chemistry of Carbonaceous Meteorites

    NASA Technical Reports Server (NTRS)

    Cronin, John R.

    2001-01-01

    Chiral and carbon-isotopic analyses of isovaline have been carried out on numerous samples of the Murchison and one sample of the Murray carbonaceous chondrite. The isovaline was found to be heterogeneous with regard to enantiomeric excess (ee) both between samples and within a single Murchison sample. L-Excesses ranging from 0 to 15% were observed. The isovaline delta(sup 13) C was found to be about +18%. No evidence was obtained suggesting terrestrial contamination in the more abundant L-enantiomer. A correlation was observed between isovaline (also alpha - aminoisobutyric acid) concentration and PCP content of five CM chondrites. It is suggested that isovaline, along with other meteoritic a-methyl amino acids with ee, are of presolar origin. The possible formation of ee in extraterrestrial amino acids by exposure to circularly polarized light or by magnetochiral photochemistry is discussed. Key words: Murchison meteorite, Murray meteorite, amino acids, isovaline, chirality, carbon isotopes, PCP.

  10. Origin and history of the "Series B" and "Series C" TAT pictures.

    PubMed

    Morgan, Wesley G

    2003-10-01

    I present the origin and history of the "Series B" and "Series C" pictures of the Thematic Apperception Test (TAT; White, Sanford, Murray, & Bellak, 1941; Clark, 1944). I fill in the evolutionary gap between the "Series A" pictures (W. G. Morgan, 2002) and the 1943 "Series D" (W. G. Morgan, 1995, 1999). Here one can observe which cards were retained from series to series, what new cards were experimentally introduced, and which cards were resurrected after a period of disuse. It would seem that only the world shattering events of WWII were enough to halt this evolution and freeze the content of the TAT at the time of Murray's departure from the Harvard Psychological Clinic to join the Office of Strategic Services.

  11. On the Neimark-Sacker bifurcation in a discrete predator-prey system.

    PubMed

    Hone, A N W; Irle, M V; Thurura, G W

    2010-11-01

    A two-parameter family of discrete models describing a predator-prey interaction is considered, which generalizes a model discussed by Murray, and originally due to Nicholson and Bailey, consisting of two coupled nonlinear difference equations. In contrast to the original case treated by Murray, where the two populations either die out or may display unbounded growth, the general member of this family displays a somewhat wider range of behaviour. In particular, the model has a nontrivial steady state which is stable for a certain range of parameter values, which is explicitly determined, and also undergoes a Neimark-Sacker bifurcation that produces an attracting invariant curve in some areas of the parameter space and a repelling one in others.

  12. Modeling coverage-dependent ink thickness in ink-jet printing.

    PubMed

    Coppel, Ludovic G; Slavuj, Radovan; Hardeberg, Jon Yngve

    2016-02-10

    We propose a simple extension of the Murray-Davis halftone reflectance model that accounts for the change of ink dot reflectance due to ink spreading. Significant improvement of the prediction accuracy is obtained for a range of paper substrates and printer combinations compared to the classical Yule-Nielsen and Clapper-Yule models. The results show that ink dot thickness dependency is the main factor limiting the validity of the Murray-Davis model and that optical dot gain can be neglected when the model is calibrated for one specific printer, ink, and substrate combination. The proposed model provides a better understanding of the reflectance from halftone prints that contributes to the development of physical models for simpler and faster printer calibration to different substrates.

  13. A generalized optimization principle for asymmetric branching in fluidic networks

    NASA Astrophysics Data System (ADS)

    Stephenson, David; Lockerby, Duncan A.

    2016-07-01

    When applied to a branching network, Murray's law states that the optimal branching of vascular networks is achieved when the cube of the parent channel radius is equal to the sum of the cubes of the daughter channel radii. It is considered integral to understanding biological networks and for the biomimetic design of artificial fluidic systems. However, despite its ubiquity, we demonstrate that Murray's law is only optimal (i.e. maximizes flow conductance per unit volume) for symmetric branching, where the local optimization of each individual channel corresponds to the global optimum of the network as a whole. In this paper, we present a generalized law that is valid for asymmetric branching, for any cross-sectional shape, and for a range of fluidic models. We verify our analytical solutions with the numerical optimization of a bifurcating fluidic network for the examples of laminar, turbulent and non-Newtonian fluid flows.

  14. Modern hydrocracking is the key to upgrading processes

    SciTech Connect

    Corbett, R.A.

    1989-06-26

    Hydrocracking technology is the key to Canada's heavy oil and bitumen upgrading facilities that have recently started or are due to start up during the next few years. The upgrader at Consumers' Cooperative Refineries Ltd. in Regina Sask.; the capacity addition program (CAP) at Syncrude Canada Ltd.'s Fort McMurray, Alta., plant; Husky Oil Operations Ltd.'s Bi-Provincial upgrader to be built near Lloydminster, Sask.; and the OSLO project to be built near Fort McMurray, all rely on this modern technology for primary upgrading. All of the projects are designed to upgrade heavy oil and bitumen extracted from oil sands to a high-quality synthetic crude oil (SCO) that is a blend of high-quality naphtha and gas oil.

  15. The partial retro-inverso modification: a road traveled together.

    PubMed

    Chorev, Michael

    2005-01-01

    In the mid-1970s, Dr. Murray Goodman was interested in a reversed peptide bond as a surrogate to understand the functional role of the amide bond in aspartame, a dipeptide sweetener. Very soon, realizing the breath and potential of this modification, Murray expanded this activity into a full program and I was fortunate to be part of it. Together we formulated new concepts such as the partially modified retro-inverso and end-group modified retro-inverso transformations, tested hypotheses, generated novel nomenclature, developed synthetic routes, characterized the preferred conformations of the unique building blocks employed in this modification, the gem-diaminoalkyl and the C2-substituted malonyl residues, and studied the biological activity of retro-inverso isomers of bioactive peptides. In the early 1980s several laboratories initiated extensive research targeted at the retro-inverso modification. The revival of this field led to new applications, new methods of synthesis, and new insights on the conformational and topological properties of the retro-inverso modification. Among the fields that embraced the retro-inverso concept were immunology as pertains to subjects such as synthetic vaccines, immunomodulators, and diagnostic tools, and drug delivery field as pertains to targeted and nontargeted cell permeation vectors loaded with bioactive cargo. Doctor Murray Goodman's sudden death leaves behind not only family, friends, and colleagues, but also an impressive record of scientific achievements among which is the revival of the modern era of the retro-inverso transformation. Murray's numerous contributions, excellent leadership, enthusiastic promotion, and outstanding teachings in this field will carry and illuminate his memory far into the future. PMID:15729688

  16. Identifying environmental correlates of intraspecific genetic variation.

    PubMed

    Harrisson, K A; Yen, J D L; Pavlova, A; Rourke, M L; Gilligan, D; Ingram, B A; Lyon, J; Tonkin, Z; Sunnucks, P

    2016-09-01

    Genetic variation is critical to the persistence of populations and their capacity to adapt to environmental change. The distribution of genetic variation across a species' range can reveal critical information that is not necessarily represented in species occurrence or abundance patterns. We identified environmental factors associated with the amount of intraspecific, individual-based genetic variation across the range of a widespread freshwater fish species, the Murray cod Maccullochella peelii. We used two different approaches to statistically quantify the relative importance of predictor variables, allowing for nonlinear relationships: a random forest model and a Bayesian approach. The latter also accounted for population history. Both approaches identified associations between homozygosity by locus and both disturbance to the natural flow regime and mean annual flow. Homozygosity by locus was negatively associated with disturbance to the natural flow regime, suggesting that river reaches with more disturbed flow regimes may support larger, more genetically diverse populations. Our findings are consistent with the hypothesis that artificially induced perennial flows in regulated channels may provide greater and more consistent habitat and reduce the frequency of population bottlenecks that can occur frequently under the highly variable and unpredictable natural flow regime of the system. Although extensive river regulation across eastern Australia has not had an overall positive effect on Murray cod numbers over the past century, regulation may not represent the primary threat to Murray cod survival. Instead, pressures other than flow regulation may be more critical to the persistence of Murray cod (for example, reduced frequency of large floods, overfishing and chemical pollution). PMID:27273322

  17. Fifteen-year trends in criteria air pollutants in oil sands communities of Alberta, Canada.

    PubMed

    Bari, Md; Kindzierski, Warren B

    2015-01-01

    An investigation of ambient air quality was undertaken at three communities within the Athabasca Oil Sands Region (AOSR) of Alberta, Canada (Fort McKay, Fort McMurray, and Fort Chipewyan). Daily and seasonal patterns and 15-year trends were investigated for several criteria air pollutants over the period of 1998 to 2012. A parametric trend detection method using percentiles from frequency distributions of 1h concentrations for a pollutant during each year was used. Variables representing 50th, 65th, 80th, 90th, 95th and 98th percentile concentrations each year were identified from frequency distributions and used for trend analysis. Small increasing concentration trends were observed for nitrogen dioxide (<1ppb/year) at Fort McKay and Fort McMurray over the period consistent with increasing emissions of oxides of nitrogen (ca. 1000tons/year) from industrial developments. Emissions from all oil sands facilities appear to be contributing to the trend at Fort McKay, whereas both emissions from within the community (vehicles and commercial) and oil sands facility emissions appear to be contributing to the trend at Fort McMurray. Sulfur dioxide (SO2) emissions from industrial developments in the AOSR were unchanged during the period (101,000±7000tons/year; mean±standard deviation) and no meaningful trends were judged to be occurring at all community stations. No meaningful trends occurred for ozone and fine particulate matter (PM2.5) at all community stations and carbon monoxide at one station in Fort McMurray. Air quality in Fort Chipewyan was much better and quite separate in terms of absence of factors influencing criteria air pollutant concentrations at the other community stations. PMID:25454237

  18. Blue Note

    ScienceCinema

    Murray Gibson

    2016-07-12

    Argonne's Murray Gibson is a physicist whose life's work includes finding patterns among atoms. The love of distinguishing patterns also drives Gibson as a musician and Blues enthusiast."Blue" notes are very harmonic notes that are missing from the equal temperament scale.The techniques of piano blues and jazz represent the melding of African and Western music into something totally new and exciting.

  19. Planetary Society

    NASA Astrophysics Data System (ADS)

    Murdin, P.

    2000-11-01

    Carl Sagan, Bruce Murray and Louis Friedman founded the non-profit Planetary Society in 1979 to advance the exploration of the solar system and to continue the search for extraterrestrial life. The Society has its headquarters in Pasadena, California, but is international in scope, with 100 000 members worldwide, making it the largest space interest group in the world. The Society funds a var...

  20. Trace fossils from the athabasca oil sands, alberta, Canada.

    PubMed

    Pemberton, S G; Flach, P D; Mossop, G D

    1982-08-27

    A diverse and well-preserved ichnofossil suite has been identified from surface exposures of the middle and upper parts of the Lower Cretaceous McMurray Formation. The suite, consisting of representatives of at least ten ichnogenera, is one of the few clues to the original biotic component of the deposit. The distribution and abundance of these biogenic structures present strong evidence that the deep channel complex in which the sediments were deposited was closely associated with a nearby marine shoreline.