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1

Executive summary: Weldon Spring Site Environmental Report for calendar year 1992. Weldon Spring Site Remedial Action Project, Weldon Spring, Missouri  

SciTech Connect

This report has been prepared to provide information about the public safety and environmental protection programs conducted by the Weldon Spring Site Remedial Action Project. The Weldon Spring site is located in southern St. Charles County, Missouri, approximately 48 km (30 mi) west of St. Louis. The site consists of two main areas, the Weldon Spring Chemical Plant and raffinate pits and the Weldon Spring Quarry. The objectives of the Site Environmental Report are to present a summary of data from the environmental monitoring program, to characterize trends and environmental conditions at the site, and to confirm compliance with environmental and health protection standards and requirements. The report also presents the status of remedial activities and the results of monitoring these activities to assess their impacts on the public and environment. The scope of the environmental monitoring program at the Weldon Spring site has changed since it was initiated. Previously, the program focused on investigations of the extent and level of contaminants in the groundwater, surface waters, buildings, and air at the site. In 1992, the level of remedial activities required monitoring for potential impacts of those activities, particularly on surface water runoff and airborne effluents. This report includes monitoring data from routine radiological and nonradiological sampling activities. These data include estimates of dose to the public from the Weldon Spring site; estimates of effluent releases; and trends in groundwater contaminant levels. Also, applicable compliance requirements, quality assurance programs, and special studies conducted in 1992 to support environmental protection programs are reviewed.

Not Available

1993-06-01

2

Aerial radiological survey of the Weldon Spring Chemical Plant (St. Charles, Missouri). Date of survey: 11--14 May 1976  

Microsoft Academic Search

An aerial radiological survey was conducted over the Weldon Spring Chemical Plant, which is in St. Charles County, thirty miles from St. Louis, Missouri. The survey was performed in May 1976 using sodium iodide detectors mounted in a helicopter. Gamma gross count and thallium radiation isopleths were superposed on an aerial photograph of the Site. Several concentrations of uraium and

Jobst

1977-01-01

3

Biological assessment for the remedial action at the chemical plant area of the Weldon Spring site  

SciTech Connect

The Weldon Spring site in St.Charles County, Missouri, became contaminated during the 1940s through the 1960s as a result of explosives production by the US Army and uranium and thorium processing by the predecessor agency of the US Department of Energy (DOE). The site is listed on the National Priorities List of the US Environmental Protection Agency, and DOE is responsible for its cleanup. Contaminants are present in soil, surface water, and aquatic sediments. Alternatives identified for site remediation are no action (included as baseline for comparison), treatment and disposal of the wastes at the Weldon Spring site, and on-site treatment followed by off-site disposal at either a commercial facility near Clive, Utah, or at DOE`s Hanford site near Richland, Washington. In accordance with the requirements of the Endangered Species Act, this biological assessment has been prepared to evaluate the potential effects of proposed remedial action alternatives on federal listed (endangered or threatened) and candidate species at the respective sites. The assessment includes consideration of the environmental setting at each site; the federal listed and candidate species that could occur at each site; the construction, excavation, and treatment activities under each alternative; and the amount of land area affected at each site.

Hlohowskyj, I.; Dunn, C.P.

1992-11-01

4

Biological assessment for the remedial action at the chemical plant area of the Weldon Spring site  

SciTech Connect

The Weldon Spring site in St.Charles County, Missouri, became contaminated during the 1940s through the 1960s as a result of explosives production by the US Army and uranium and thorium processing by the predecessor agency of the US Department of Energy (DOE). The site is listed on the National Priorities List of the US Environmental Protection Agency, and DOE is responsible for its cleanup. Contaminants are present in soil, surface water, and aquatic sediments. Alternatives identified for site remediation are no action (included as baseline for comparison), treatment and disposal of the wastes at the Weldon Spring site, and on-site treatment followed by off-site disposal at either a commercial facility near Clive, Utah, or at DOE's Hanford site near Richland, Washington. In accordance with the requirements of the Endangered Species Act, this biological assessment has been prepared to evaluate the potential effects of proposed remedial action alternatives on federal listed (endangered or threatened) and candidate species at the respective sites. The assessment includes consideration of the environmental setting at each site; the federal listed and candidate species that could occur at each site; the construction, excavation, and treatment activities under each alternative; and the amount of land area affected at each site.

Hlohowskyj, I.; Dunn, C.P.

1992-11-01

5

Geologic report for the Weldon Spring Raffinate Pits Site  

SciTech Connect

A preliminary geologic site characterization study was conducted at the Weldon Spring Raffinate Pits Site, which is part of the Weldon Spring Site, in St. Charles County, Missouri. The Raffinate Pits Site is under the custody of the Department of Energy (DOE). Surrounding properties, including the Weldon Spring chemical plant, are under the control of the Department of the Army. The study determined the following parameters: site stratigraphy, lithology and general conditions of each stratigraphic unit, and groundwater characteristics and their relation to the geology. These parameters were used to evaluate the potential of the site to adequately store low-level radioactive wastes. The site investigation included trenching, geophysical surveying, borehole drilling and sampling, and installing observation wells and piezometers to monitor groundwater and pore pressures.

none,

1984-10-01

6

Weldon Spring historical dose estimate  

SciTech Connect

This study was conducted to determine the estimated radiation doses that individuals in five nearby population groups and the general population in the surrounding area may have received as a consequence of activities at a uranium processing plant in Weldon Spring, Missouri. The study is retrospective and encompasses plant operations (1957-1966), cleanup (1967-1969), and maintenance (1969-1982). The dose estimates for members of the nearby population groups are as follows. Of the three periods considered, the largest doses to the general population in the surrounding area would have occurred during the plant operations period (1957-1966). Dose estimates for the cleanup (1967-1969) and maintenance (1969-1982) periods are negligible in comparison. Based on the monitoring data, if there was a person residing continually in a dwelling 1.2 km (0.75 mi) north of the plant, this person is estimated to have received an average of about 96 mrem/yr (ranging from 50 to 160 mrem/yr) above background during plant operations, whereas the dose to a nearby resident during later years is estimated to have been about 0.4 mrem/yr during cleanup and about 0.2 mrem/yr during the maintenance period. These values may be compared with the background dose in Missouri of 120 mrem/yr.

Meshkov, N.; Benioff, P.; Wang, J.; Yuan, Y.

1986-07-01

7

Geochemistry and migration of contaminants at the Weldon Spring chemical plant site, St. Charles County, Missouri, 1989-91  

USGS Publications Warehouse

The geochemistry of the shallow aquifer and geochemical controls on the migration of uranium and other constituents from raffinate pits were determined at the Weldon Spring chemical plant site. Surface-water samples from the raffinate pits con- tained large concentrations of calcium, magnesium, sodium, potassium, sulfate, nitrite, lithium, moly- bdenum, strontium, vanadium, and uranium. Analyses of interstitial-water samples from raffinate pit 3 indicated that concentrations of most constituents increased with increasing depth below the water- sediment interface. Nitrate and uranium were not chemically reduced and attenuated within the raffinate pits and can be expected to migrate into the overburden. Laboratory sorption experiments were performed to evaluate the effect of pH value on the sorption of several raffinate constituents by the overburden. No sorption of calcium, sodium, sulfate, nitrate, or lithium was observed. Sorption of molybdenum was dependent on solution pH and sorption of uranium was dependent on solution pH and carbonate concentration. The sorption of uranium and molybdenum was consistent with sorption controlled by oxyhydroxides. The quality of water collected in overburden lysimeters near raffinate pit 4 can be modeled as a mixture of water from raffinate pits 3 and 4, and an uncontaminated com- ponent in a system at equilibrium with ferrihydrite and calcite. Increased constituent concentrations in a perennial spring north of the site were the result of a subsurface connection between the spring and several losing stream segments receiving runoff from the site, in addition to seepage from the raffinate pits.

Schumacher, John G.

1993-01-01

8

Weldon Spring Site Environmental Report for Calendar Year 1995  

SciTech Connect

This Weldon Spring Site Environmental Report for Calendar Year 1995 has been prepared to provide information about the public safety and environmental protection programs conducted by the Weldon Spring Site Remedial Action Project (WSSRAP). The Weldon Spring site is located in southern St. Charles County, Missouri, approximately 48 km (30 mi) west of St. Louis. The site consists of two main areas, the Weldon Spring Chemical Plant and raffinate pits and the Weldon Spring Quarry. The chemical plant, raffinate pits, and quarry are located on Missouri State Route 94, southwest of U.S. Route 40/61. The objectives of the Site Environmental Report are to present a summary of data from the environmental monitoring program, to characterize trends and environmental conditions at the site, and to confirm compliance with environmental and health protection standards and requirements. The report also presents the status of remedial activities and the results of monitoring these activities to assess their impacts on the public and environment. This report includes monitoring data from routine radiological and nonradiological sampling activities. These data include estimates of dose to the public from the Weldon Spring site, estimates of effluent releases, and trends in groundwater contaminant levels. Additionally, applicable compliance requirements, quality assurance programs, and special studies conducted in 1995 to support environmental protection programs are discussed. Dose estimates presented in this report are based on hypothetical exposure scenarios for public use of areas near the site. In addition, release estimates have been calculated on the basis of 1995 National Pollutant Discharge Elimination System (NPDES) and air monitoring data. Effluent discharges from the site under routine NPDES and National Emission Standards for Hazardous Air Pollutants (NESHAPs) monitoring were below permitted levels.

NONE

1996-06-01

9

Weldon Spring Site Environmental Report for calendar year 1994  

SciTech Connect

This report for Calendar Year 1994 has been prepared to provide information about the public safety and environmental protection programs conducted by the Weldon Spring Site Remedial Action Project (WSSRAP). The Weldon Spring site is located in southern St. Charles County, Missouri, approximately 48 km (30 mi) west of St. Louis. The site consists of two main areas, the Weldon Spring Chemical Plant and raffinate pits and the Weldon Spring Quarry. The chemical plant, raffinate pits, and quarry are located on Missouri State Route 94, southwest of US Route 40/61. The objectives of the Site Environmental Report are to present a summary of data from the environmental monitoring program, to characterize trends and environmental conditions at the site, and to confirm compliance with environmental and health protection standards and requirements. The report also presents the status of remedial activities and the results of monitoring these activities to assess their impacts on the public and environment. This report includes monitoring data from routine radiological and nonradiological sampling activities. These data include estimates of dose to the public from the Weldon Spring site, estimates of effluent releases, and trends in groundwater contaminant levels. Additionally, applicable compliance requirements, quality assurance programs, and special studies conducted in 1994 to support environmental protection programs are discussed. Dose estimates presented in this report are based on hypothetical exposure scenarios of public use of areas near the site. In addition, release estimates have been calculated on the basis of 1994 National Pollutant Discharge Elimination System (NPDES) and air monitoring data. Effluent discharges from the site under routine NPDES and National Emission Standards for Hazardous Air Pollutants (NESHAPS) monitoring were below permitted levels.

NONE

1995-05-01

10

Weldon Spring Site environmental report for calendar year 1993. Weldon Springs Site Remedial Action Project  

SciTech Connect

This Site Environmental Report for Calendar Year 1993 describes the environmental monitoring programs at the Weldon Spring Site Remedial Action Project (WSSRAP). The objectives of these programs are to assess actual or potential exposure to contaminant effluents from the project area by providing public use scenarios and dose estimates, to demonstrate compliance with Federal and State permitted levels, and to summarize trends and/or changes in contaminant concentrations from environmental monitoring program. In 1993, the maximum committed dose to a hypothetical individual at the chemical plant site perimeter was 0.03 mrem (0.0003 mSv). The maximum committed dose to a hypothetical individual at the boundary of the Weldon Spring Quarry was 1.9 mrem (0.019 mSv). These scenarios assume an individual walking along the perimeter of the site-once a day at the chemical plant/raffinate pits and twice a day at the quarry-250 days per year. This hypothetical individual also consumes fish, sediment, and water from lakes and other bodies of water in the area. The collective dose, based on an effected population of 112,000 was 0.12 person-rem (0.0012 person-Sv). This calculation is based on recreational use of the August A. Busch Memorial Conservation Area and the Missouri Department of Conservation recreational trail (the Katy Trail) near the quarry. These estimates are below the U.S. Department of Energy requirement of 100 mrem (I mSv) annual committed effective dose equivalent for all exposure pathways. Results from air monitoring for the National Emission Standards for Hazardous Air Pollutants (NESHAPs) program indicated that the estimated dose was 0.38 mrem, which is below the U.S. Environmental Protection Agency (EPA) standard of 10 mrem per year.

Not Available

1994-05-01

11

Evaluation of surface water treatment and discharge options for the Weldon Spring Site Remedial Action Project  

SciTech Connect

The US Department of Energy (DOE), under its Environmental Restoration and Waste Management Program, is responsible for conducting response actions at the Weldon Spring site in St. Charles County, Missouri. The site consists of two noncontiguous areas: (1) the chemical plant area, which includes four raffinate pits and two small ponds, and (2) a 3.6-ha (9-acre) quarry located about 6.4 km (4 mi) southwest of the chemical plant area. Both of these areas became chemically and radioactively contaminated as a result of processing and disposal activities that took place from the 1940s through 1960s. The Weldon Spring site, located about 48 km (30 mi) west of St. Louis, is listed on the National Priorities List of the US Environmental Protection Agency. Nitroaromatic explosives were processed by the Army at the chemical plant area during the 1940s, and radioactive materials were processed by DOE's predecessor agency (the Atomic Energy Commission) during the 1950s and 1960s. Overall remediation of the Weldon Spring site is being addressed through the Weldon Spring Site Remedial Action Project, and it consists of several components. One component is the management of radioactively and chemically contaminated surface water impoundments at the chemical plant area -- i.e., the four raffinate pits, Frog Pond, and Ash Pond which was addressed under a separate action and documented in an engineering evaluation/cost analysis report. This report discusses the evaluation of surface water treatment at the Weldon Spring site.

Goyette, M.L.; MacDonell, M.M.

1992-01-01

12

Evaluation of surface water treatment and discharge options for the Weldon Spring Site Remedial Action Project  

SciTech Connect

The US Department of Energy (DOE), under its Environmental Restoration and Waste Management Program, is responsible for conducting response actions at the Weldon Spring site in St. Charles County, Missouri. The site consists of two noncontiguous areas: (1) the chemical plant area, which includes four raffinate pits and two small ponds, and (2) a 3.6-ha (9-acre) quarry located about 6.4 km (4 mi) southwest of the chemical plant area. Both of these areas became chemically and radioactively contaminated as a result of processing and disposal activities that took place from the 1940s through 1960s. The Weldon Spring site, located about 48 km (30 mi) west of St. Louis, is listed on the National Priorities List of the US Environmental Protection Agency. Nitroaromatic explosives were processed by the Army at the chemical plant area during the 1940s, and radioactive materials were processed by DOE`s predecessor agency (the Atomic Energy Commission) during the 1950s and 1960s. Overall remediation of the Weldon Spring site is being addressed through the Weldon Spring Site Remedial Action Project, and it consists of several components. One component is the management of radioactively and chemically contaminated surface water impoundments at the chemical plant area -- i.e., the four raffinate pits, Frog Pond, and Ash Pond which was addressed under a separate action and documented in an engineering evaluation/cost analysis report. This report discusses the evaluation of surface water treatment at the Weldon Spring site.

Goyette, M.L.; MacDonell, M.M.

1992-09-01

13

Feasibility study for remedial action for the groundwater operable units at the chemical plant area and the ordnance works area, Weldon Spring, Missouri  

SciTech Connect

The U.S. Department of Energy (DOE) and the U.S. Department of Army (DA) are conducting an evaluation to identify the appropriate response action to address groundwater contamination at the Weldon Spring Chemical Plant (WSCP) and the Weldon Spring Ordnance Works (WSOW), respectively. The two areas are located in St. Charles County, about 48 km (30 rni) west of St. Louis. The groundwater operable unit (GWOU) at the WSCP is one of four operable units being evaluated by DOE as part of the Weldon Spring Site Remedial Action Project (WSSRAP). The groundwater operable unit at the WSOW is being evaluated by the DA as Operable Unit 2 (OU2); soil and pipeline contamination are being managed under Operable Unit 1 (OU1). Remedial activities at the WSCP and the WSOW are being conducted in accordance with the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). Consistent with DOE policy, National Environmental Policy Act (NEPA) values have been incorporated into the CERCLA process. A remedial investigation/feasibility study (RI/FS) work plan summarizing initial site conditions and providing site hydrogeological and exposure models was published in August of 1995 (DOE 1995). The remedial investigation (RI) and baseline risk assessment (BRA) have also recently been completed. The RI (DOE and DA 1998b) discusses in detail the nature, extent, fate, and transport of groundwater and spring water contamination. The BRA (DOE and DA 1998a) is a combined baseline assessment of potential human health and ecological impacts and provides the estimated potential health risks and ecological impacts associated with groundwater and springwater contamination if no remedial action were taken. This feasibility study (FS) has been prepared to evaluate potential options for addressing groundwater contamination at the WSCP and the WSOW. A brief description of the history and environmental setting of the sites is presented in Section 1.1, key information relative to the nature and extent of contamination is presented in Section 1.2, and the results of the BRA are summarized in Section 1.3. The objective of this FS is discussed in Section 1.4, and preliminary remediation goals are identified in Section 1.5. The organization of the remaining chapters of this FS is outlined in Section 1.6.

NONE

1999-07-15

14

Weldon Spring Site environmental report for calendar year 1997.  

National Technical Information Service (NTIS)

This report describes the environmental monitoring programs at the Weldon Spring Site Remedial Action Project (WSSRAP). The objectives of these programs are to assess actual or potential exposure to contaminant effluents from the project area by providing...

1998-01-01

15

Development of a model for geomorphological assessment at U.S. DOE chemical/radioactive waste disposal facilities in the central and eastern United States; Weldon spring site remedial action project, Weldon Spring, Missouri  

SciTech Connect

Landform development and long-term geomorphic stability is the result of a complex interaction of a number of geomorphic processes. These processes may be highly variable in intensity and duration under different physiographic settings. This limitation has influenced the applicability of previous geomorphological stability assessments conducted in the arid or semi-arid western United States to site evaluations in more temperate and humid climates. The purpose of this study was to develop a model suitable for evaluating both long-term and short-term geomorphic processes which may impact landform stability and hence the stability of disposal facilities located in the central and eastern United States. The model developed for the geomorphological stability assessment at the Weldon Spring Site Remedial Action Project (WSSRAP) near St. Louis, Missouri, included an evaluation of existing landforms and consideration of the impact of both long-term and short-term geomorphic processes. These parameters were evaluated with respect to their impact and contribution to three assessment criteria considered most important with respect to the stability analysis; evaluation of landform age, evaluation of present geomorphic process activity and ; determination of the impact of the completed facility on existing geomorphic processes. The geomorphological assessment at the Weldon Spring site indicated that the facility is located in an area of excellent geomorphic stability. The only geomorphic process determined to have a potential detrimental effect on long-term facility performance is an extension of the drainage network. A program of mitigating measures has been proposed to minimize the impact that future gully extension could have on the integrity of the facility.

Rockaway, J.D. [Univ. of Missouri-Rolla, Rolla, MO (United States); Smith, R.J. [Jacobs Engineering Group, WSSRAP, St. Charles, MO (United States)

1994-12-31

16

Engineering evaluation/cost analysis for the proposed removal action at the Southeast Drainage near the Weldon Spring Site, Weldon Spring, Missouri  

SciTech Connect

The engineering evaluation/cost analysis (EE/CA) has been prepared to support the proposed removal of contaminated sediment from selected portions of the Southeast Drainage as part of cleanup activities being conducted at the Weldon Spring site in St. Charles County, Missouri, by the U.S. Department of Energy (DOE). The cleanup activities are conducted in accordance with the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), as amended, incorporating the values of the National Environmental Policy Act (NEPA). The Weldon Spring site is located near the town of Weldon Spring, about 48 km (30 mi) west of St. Louis. It consists of two noncontiguous areas: the chemical plant area and a limestone quarry about 6.4 km (4 mi) south-southwest of the chemical plant area. The Southeast Drainage is a natural 2.4-km (1.5-mi) channel that carries surface runoff to the Missouri River from the southern portion of the chemical plant area and a small portion of the ordnance works area (part of the Weldon Spring Training Area) south of the groundwater divide. The drainage became contaminated as a result of past activities of the U.S. Army and the DOE (and its predecessors).

NONE

1996-08-01

17

Baseline risk assessment for the quarry residuals operable unit of the Weldon Spring Site, Weldon Spring, Missouri  

SciTech Connect

The U.S. Department of Energy (DOE) is conducting cleanup activities at the Weldon Spring site, located in St. Charles County, Missouri, about 48 km (30 mi) west of St. Louis. Cleanup of the site consists of several integrated components. The quarry residuals operable unit (QROU), consisting of the Weldon Spring quarry and its surrounding area, is one of four operable units being evaluated. In accordance with requirements of the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), as amended, DOE is conducting a remedial investigation/feasibility study (RI/FS) to determine the proper response to address various contaminated media that constitute the QROU. Specifically, the operable unit consists of the following areas and media: the residual material remaining at the Weldon Spring quarry after removal of the pond water and the bulk waste; groundwater underlying the quarry and surrounding area; and other media located in the surrounding vicinity of the quarry, including surface water and sediment at Femme Osage Slough, Little Femme Osage Creek, and Femme Osage Creek. An initial evaluation of conditions at the quarry area identified remaining data requirements needed to support the conceptual site exposure and hydrogeological models. These data requirements are discussed in the RI/FS work plan issued in January 1994. Soil contamination located at a property adjacent to the quarry, referred to as Vicinity Property 9 (VP9), was originally part of the scope of the QROU, as discussed in the work plan. However, a decision was subsequently made to remediate this vicinity property as part of cleanup activities for the chemical plant operable unit, as provided for in the Record of Decision (ROD). Remediation of VP9 was completed in early 1996. Hence, this baseline risk assessment (BRA) does not address VP9.

NONE

1998-02-01

18

Remedial investigation concept plan for the groundwater operable units at the chemical plant area and the ordnance works area, Weldon Spring, Missouri  

SciTech Connect

The U.S. Department of Energy (DOE) and the U.S. Department of the Army (DA) are conducting cleanup activities at two properties--the DOE chemical plant area and the DA ordnance works area (the latter includes the training area)--located in the Weldon Spring area in St. Charles County, Missouri. These areas are on the National Priorities List (NPL), and cleanup activities at both areas are conducted in accordance with the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), as amended. DOE and DA are conducting a joint remedial investigation (RI) and baseline risk assessment (BRA) as part of the remedial investigation/feasibility study (RI/FS) for the groundwater operable units for the two areas. This joint effort will optimize further data collection and interpretation efforts and facilitate overall remedial decision making since the aquifer of concern is common to both areas. A Work Plan issued jointly in 1995 by DOE and the DA discusses the results of investigations completed at the time of preparation of the report. The investigations were necessary to provide an understanding of the groundwater system beneath the chemical plant area and the ordnance works area. The Work Plan also identifies additional data requirements for verification of the evaluation presented.

NONE

1999-07-15

19

Floodplain/wetlands assessment for the borrow areas for the restoration of the Weldon Spring Quarry, Weldon Spring Site, Missouri  

SciTech Connect

The US Department of Energy proposes to develop two soil borrow areas, 8.1 ha (20 acres) and 1.3 ha (3.1 acres) in size, near the Weldon Spring Site, Weldon Spring, Missouri. One wetland and portions of four others would be excavated during development of the borrow areas. These wetlands include palustrine emergent and palustrine forested wetland types and total 0.98 ha (2.4 acres). Hydrology and biotic communities may be altered in several wetlands located near the borrow areas. No long-term adverse impacts to floodplains are expected.

Van Lonkhuyzen, R.A.

1999-12-15

20

Streamlined RI/FS planning for the groundwater operable unit at the Weldon Spring Site  

SciTech Connect

The U.S. Department of Energy (DOE) is conducting cleanup activities at the chemical plant area of the Weldon Spring Site located in St. Charles County, Missouri, about 48 km (30 mi) west of St. Louis and 22 km (14 mi) southwest of the City of St. Charles. The 88-ha (217-acre) chemical plant area is chemically and radioactively contaminated as a result of uranium processing activities conducted by the U.S. Atomic Energy Commission during the 1950s and 1960s. The Army also used the chemical plant area for the production of explosives in the 1940s. The Weldon Spring Site chemical plant area was listed on the National Priorities List (NPL) in 1989. Adjacent to the chemical plant area is another NPL site known as the Weldon Spring Ordnance Works. The ordnance works area is a former explosive production facility that manufactured trinitrotoluene (TNT) and dinitrotoluene (DNT) during World War II. The ordnance works area covers 7,000 ha (17,232 acres); cleanup of this site is managed by the U.S. Army Corps of Engineers (CE).

Picel, M.H.; Durham, L.A.; Blunt, D.L.; Hartmann, H.M.

1995-12-31

21

Floodplain/wetlands assessment for the remediation of the southeast drainage near the Weldon Spring Site, Weldon Spring, Missouri  

SciTech Connect

The US DOE proposes to remove contaminated sediments from selected portions of the Southeast Drainage, a natural stream near the Weldon Spring site in Missouri. Under the Preferred Alternative, approximately 1,929 m{sup 3} of sediments would be excavated from the Southeast Drainage. Aquatic communities within the stream would be temporarily disturbed, but populations of aquatic biota within the stream would be expected to recover. No long-term adverse impacts to floodplains are expected.

Van Lonkhuyzen, R.; Yin, S.C.L.

1996-08-01

22

Weldon Spring Site environmental report for calendar year 1997  

SciTech Connect

This report describes the environmental monitoring programs at the Weldon Spring Site Remedial Action Project (WSSRAP). The objectives of these programs are to assess actual or potential exposure to contaminant effluents from the project area by providing public use scenarios and dose estimates, to demonstrate compliance with Federal and State permitted levels and regulations, and to summarize trends and/or changes in contaminant concentrations identified through environmental monitoring. Comprehensive monitoring indicated that emissions of radiological compounds in airborne and surface water discharges from the Weldon Spring site consisted primarily of Rn-220 gas, isotopes of thorium and radium, and natural uranium. Airborne Rn-220 emissions were estimated to be 42 Ci (1.6E12 Bq), while emissions from a combination of thorium, radium, and natural uranium isotopes to air and surface water were estimated to be 0.018 Ci (6.7E8 Bq), for a total of 25,000 g (25 kg). There was no measurable impact to any drinking water source.

NONE

1998-08-01

23

Hydrologic data for the Weldon Spring radioactive waste-disposal sites, St. Charles County, Missouri; 1984-1986  

USGS Publications Warehouse

Hydrologic and water quality data were collected during an investigation of the Weldon Spring radioactive waste disposal sites and surroundings area in St. Charles County, Missouri, from 1984 to 1986. The data consists of water quality analyses of samples collected from 45 groundwater and 27 surface water sites. This includes analyses of water from four raffinate pits and from the Weldon Spring quarry. Also included in the report are the results of a seepage run on north flowing tributaries to Dardenne Creek from Kraut Run to Crooked Creek. Mean daily discharge from April 1985 to April 1986 is given for two springs located about 1.5 mi north of the chemical plant. (USGS)

Kleeschulte, M. J.; Emmett, L. F.; Barks, J. H.

1986-01-01

24

Work plan for the remedial investigation/feasibility study for the groundwater operable units at the Chemical Plant Area and the Ordnance Works Area, Weldon Spring, Missouri  

SciTech Connect

US Department of Energy (DOE) and the US Army Corps of Engineers (CE) are conducting cleanup activities at two properties, the chemical plant area and the ordnance works area, located adjacent to one another in St. Charles County, Missouri. In accordance with the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), as amended, DOE and CE are evaluating conditions and potential responses at the chemical plant area and at the ordnance works area, respectively, to address groundwater and surface water contamination. This work plan provides a comprehensive evaluation of areas that are relevant to the (GWOUs) of both the chemical plant and the ordnance works area. Following areas or media are addressed in this work plan: groundwater beneath the chemical plant area (including designated vicinity properties described in Section 5 of the RI for the chemical plant area [DOE 1992d]) and beneath the ordnance works area; surface water and sediment at selected springs, including Burgermeister Spring. The organization of this work plan is as follows: Chapter 1 discusses the objectives for conducting the evaluation, including a summary of relevant site information and overall environmental compliance activities to be undertaken; Chapter 2 presents a history and a description of the site and areas addressed within the GWOUs, along with currently available data; Chapter 3 presents a preliminary evaluation of areas included in the GWOUs, which is based on information given in Section 2, and discusses data requirements; Chapter 4 presents rationale for data collection or characterization activities to be carried out in the remedial investigation (RI) phase, along with brief summaries of supporting documents ancillary to this work plan; Chapter 5 discusses the activities planned for GWOUs under each of the 14 tasks for an remedial (RI/FS); Chapter 6 presents proposed schedules for RI/FS for the GWOUS; and Chapter 7 explains the project management structure.

NONE

1995-08-01

25

A survey of the wetlands and floodplains of the borrow area and wetland/shorebird complex for the remedial action at the chemical plant area of the Weldon Spring Site  

SciTech Connect

The US Department of Energy is conducting cleanup operations at the Weldon Spring site, St. Charles, Missouri, that will include development of a 77-ha (191-acre) soil borrow area. Eight wetlands, including riverine and palustrine emergent wetland types and totaling 0.9 ha (2.2 acres), will be eliminated during excavation of the borrow area. A 23-ha (57-acre) wetland/shorebird complex will be created at the Busch Conservation Area. The complex will include 2 ha (5 acres) of palustrine emergent wetland as mitigation for wetland losses in the borrow area.

Van Lonkhuyzen, R.; Yin, S.; Hlohowskyj, I.

1995-02-01

26

Vitrification technologies for Weldon Spring raffinate sludges and contaminated soils - Phase 2 Report: Screening of Alternatives  

SciTech Connect

This report is intended to aid the Weldon Spring Project Management Contractor in screening two vitrification technologies developed by Pacific Northwest Laboratory (PNL) for the remediation of raffinate sludges and contaminated soils at the Weldon Spring site in St. Charles County, Missouri. A previous report (Koegler, Oma, and Perez 1988) described the joule-heated ceramic melter (JHCM) and in situ vitrification (ISV) processes and their applicability to remediation of the Weldon Spring site based on existing information and previous PNL experience with similar wastes. Subsequent treatability tests and product analysis were conducted by PNL to further evaluate the JHCM and ISV processes. The treatability tests involved laboratory and bench-scale tests with actual raffinate sludge and uncontaminated soil from the Weldon Spring site. The vitrified product from the JHCM and ISV treatability tests was analyzed for a wide range of characteristics, including durability (leach resistance), strength, and toxicity. Both the process performance test and product quality were used to assess the two PNL vitrification technologies to determine their effectiveness, implementability, and cost. 11 refs., 16 figs., 23 tabs.

Koegler, S.S.; Nakaoka, R.K.; Farnsworth, R.K.; Bates, S.O.

1989-11-01

27

Work plan for the remedial investigation/feasibility study-environmental assessment for the quarry residuals operable unit at the Weldon Spring Site  

SciTech Connect

The US Department of Energy (DOE) is conducting cleanup activities at the Weldon Spring site, which is located in St. Charles County, Missouri, about 48 km (30 mi) west of St. Louis. The Weldon Spring site consists of two noncontiguous areas -- the chemical plant area, which includes four raffinate pits, and the quarry. Cleanup activities at the Weldon Spring site are conducted in accordance with the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), as amended, incorporating the values of the National Environmental Policy Act (NEPA). The contents of the documents prepared for the project are not intended to represent a statement regarding the legal applicability of NEPA to remedial actions conducted under CERCLA. In accordance with the integrated CERCLA/NEPA approach, a remedial investigation/feasibility study-environmental assessment (RI/FS-EA) is being conducted to evaluate conditions and potential responses for the quarry residuals operable unit (QROU). This operable unit consists of the following areas and/or media: the residual material remaining at the Weldon Spring quarry after removal of the pond water and bulk waste; underlying groundwater; and other media located in the surrounding vicinity of the quarry, including adjacent soil, surface water, and sediment in Femme Osage Slough. This work plan identifies the activities within the RI/FS-EA process that are being proposed to address contamination remaining at the quarry area.

Not Available

1994-01-01

28

Weldon spring site environmental report for calendar year 1996. Revision 0  

SciTech Connect

This Site Environmental Report for Calendar Year 1996 describes the environmental monitoring programs at the Weldon Spring Site Remedial Action Project (WSSRAP). The objectives of these programs are to assess actual or potential exposure to contaminant effluents from the project area by providing public use scenarios and dose estimates, to demonstrate compliance with Federal and State permitted levels and regulations, and to summarize trends and/or changes in contaminant concentrations identified through environmental monitoring.

NONE

1997-07-23

29

Weldon Spring Site Remedial Action Project quarterly environmental data summary for second quarter 1998  

SciTech Connect

In support of the Weldon Spring Site Remedial Action Project Federal Facilities Agreement, a copy of the Quarterly Environmental Data Summary (QEDS) for the second quarter of 1998 is enclosed. The data presented constitutes the QEDS. The data were received from the contract laboratories, verified by the Weldon Spring Site verification group and, except for air monitoring data and site KPA generated data (uranium analyses), merged into the database during the second quarter of 1998. Air monitoring data presented are the most recent complete sets of quarterly data. Air data are not stored in the database and KPA data are not merged into the regular database. All data received and verified during the second quarter were within a permissible range of variability, except for those listed. Above normal occurrences are cited for groundwater, air, and NPDES data. There were no above normal occurrences for springs or surface water. The attached tables present the most recent data for air and the data merged into the database during the second quarter 1998 for groundwater, NPDES, surface water, and springs.

NONE

1998-08-11

30

Geochemical information for sites contaminated with low-level radioactive wastes. III. Weldon Spring Storage Site  

SciTech Connect

The Weldon Spring Storage Site (WSSS), which includes both the chemical site and the quarry, became radioactively contaminated as the result of wastes that were being stored from operations to recover uranium from pitchblende ores in the 1940s and 1950s. The US Department of Energy (DOE) is considering various remedial action options for the WSSS. This report describes the results of geochemical investigations carried out at Oak Ridge National Laboratory (ORNL) to support these activities and to help quantify various remedial action options. Soil and groundwater samples were characterized, and uranium and radium sorption ratios were measured in site soil/groundwater systems by batch contact methodology. Soil samples from various locations around the raffinate pits were found to contain major amounts of silica, along with illite as the primary clay constituent. Particle sizes of the five soil samples were variable (50% distribution point ranging from 12 to 81 ..mu..m); the surface areas varied from 13 to 62 m/sup 2//g. Elemental analysis of the samples showed them to be typical of sandy clay and silty clay soils. Groundwater samples included solution from Pit 3 and well water from Well D. Anion analyses showed significant concentrations of sulfate and nitrate (>350 and >7000 mg/L, respectively) in the solution from Pit 3. These anions were also present in the well water, but in lower concentrations. Uranium sorption ratios for four of the soil samples contacted with the solution from Pit 3 were moderate to high (approx. 300 to approx. 1000 mL/g). The fifth sample had a ratio of only 12 mL/g. Radium sorption ratios for the five samples were moderate to high (approx. 600 to approx. 1000 mL/g). These values indicate that soil at the WSSS may show favorable retardation of uranium and radium in the groundwater. 13 references, 13 figures, 10 tables.

Seeley, F.G.; Kelmers, A.D.

1985-02-01

31

Critical (public) masses: a case study of a radioactive waste site. [Weldon Springs  

SciTech Connect

Increasing public sensitivity to radioactive and other hazardous waste issues often results in opposition that ranges from presentations by individuals at various public meetings to organizations initiating legal action in the courts. Organized opposition to proposed plans by the US Department of Energy (DOE) for a Surplus Facilities Management Program site near Weldon Spring, Missouri, has emerged during the two years that DOE has been involved in developing plans for this waste management site. An important aspect in the development of the major interest group in this case was the reliance on extra-local expertise at both the state and national levels. The group received organizational strategies, information on radioactive waste, legal advice, and direction from state and local environmental interest groups and various state agencies. In this paper, we present the historical development of organized public response and agency response to DOE's plans for the Weldon Spring site. The role of the interest group has emerged as one of a watchdog, scrutinizing and evaluating data, publications, and plans. Other organizations now rely on the group as a clearinghouse for information. This case is of particular importance to other waste management projects because it demonstrates the effective use of networking between various interest groups and agencies from the local to the national level. We believe that the emergence of such groups and their ties with a variety of extra-local organizations will be the rule rather than the exception in future waste projects. Agency personnel and project sponsors will find that an interactive, cooperative approach with such groups is an effective way to resolve waste issues.

Williams, R.G.; Payne, B.A.

1985-01-01

32

Weldon Spring Site Remedial Action Project Federal Facilities Agreement: Quarterly environmental data summary for third quarter 1998  

SciTech Connect

In support of the Weldon Spring Site Remedial Action Project Federal Facilities Agreement, a copy of the Quarterly Environmental Data Summary (QEDS) for the third quarter of 1998 is enclosed. The data presented in this letter and attachment constitute the QEDS. The data, except for air monitoring data and site KPA generated data (uranium analyses), were received from the contract laboratories, verified by the Weldon Spring Site verification group, and merged into the database during the third quarter of 1998. Air monitoring data presented are the most recent complete sets of quarterly data. Significant data, defined as data values that have exceeded defined above normal Level 2 values, are discussed in this letter for Environmental Monitoring Plan (EMP) generated data only. Above normal Level 2 values are based, in ES and H procedures, on historical high values, DOE Derived Concentration Guides (DCGs), NPDES limits, and other guidelines. The procedures also establish actions to be taken in the event that above normal data occur.

NONE

1998-11-06

33

The Use of Ecological Restoration Principles To Achieve Remedy Protection At the Fernald Preserve and Weldon Spring Sites  

SciTech Connect

At both the Fernald Preserve and the Weldon Spring Site, the development of ecological restoration goals and objectives was used to complement and even enhance achievement of selected remedies. Warm-season native grasses and forbs were used for revegetation of remediated areas. The hardiness and ability to establish in low-nutrient conditions make native grasses ideal candidates for reestablishment of vegetation in excavated areas. At the Fernald Preserve, native grasses were used for vegetative cover on an on-site disposal facility as well. Also at the Fernald Preserve, excavation footprints were optimized to increase the quantity and quality of created wetlands. Drainage features in a couple instances provide passive groundwater recharge, potentially accelerating groundwater remediation efforts. In addition, a number of clean materials and structures were beneficially reused as part of ecological restoration designs, including wood-chip mulch and woody debris, clean concrete, and a rail trestle. At the Weldon Spring Site, several methods were used to control erosion for three years after the initial seeding of native species. A field evaluation of soil conditions and general species diversity was performed in 2007 and it was determined that erosion at the site was typical and repairing naturally. These approaches resulted in 'win-win' strategies needed to successfully remediate and restore complex projects such as the Fernald Preserve and Weldon Spring. (authors)

Powell, J.; Johnston, F.; Homer, J. [Fernald Preserve, Ohio (United States); Deyo, Y. [Weldon Spring, St. Charles, Missouri (United States)

2008-07-01

34

Ground-water flow and ground- and surface-water interaction at the Weldon Spring quarry, St. Charles County, Missouri  

SciTech Connect

Ground-water-level measurements to support remedial actions were made in 37 piezometers and 19 monitoring wells during a 19-month period to assess the potential for ground-water flow from an abandoned quarry to the nearby St. Charles County well field, which withdraws water from the base of the alluvial aquifer. From 1957 to 1966, low-level radioactive waste products from the Weldon Spring chemical plant were placed in the quarry a few hundred feet north of the Missouri River alluvial plain. Uranium-based contaminants subsequently were detected in alluvial ground water south of the quarry. During all but flood conditions, lateral ground-water flow in the bedrock from the quarry, as interpreted from water-table maps, generally is southwest toward Little Femme Osage Creek or south into the alluvial aquifer. After entering the alluvial aquifer, the ground water flows southeast to east toward a ground-water depression presumably produced by pumping at the St. Charles County well field. The depression position varies depending on the Missouri River stage and probably the number and location of active wells in the St. Charles County well field.

Imes, J.L.; Kleeschulte, M.J.

1997-12-31

35

The effects of a perturbed source on contaminant transport near the Weldon Spring quarry  

SciTech Connect

The effects of a perturbed contamination source at the Weldon Spring quarry in St. Charles County, Missouri, on downstream solute concentrations were investigated using one-dimensional analytical solutions to an advection-dispersion equation developed for both constant-strength and multiple-stepped source functions. A sensitivity study using parameter base-case values and ranges consistent with the geologic conceptualization of the quarry area indicates that the parameters having the greatest effect on predicted concentrations are the distance from the quarry to the point of interest, the average linear groundwater velocity, the contaminant retardation coefficient, and the amplitude and duration of the source perturbation caused by response action activities. Use of base-case parameter value and realistic values for the amplitude and duration of the source perturbation produced a small effect on solute concentrations near the western extremity of the nearby municipal well field, as well as small uncertainties in the predicted results for the assumed model. The effect of simplifying assumptions made in deriving the analytic solution is unknown: use of a multidimensional flow and transport model and additional field work are needed to validate the model. 13 refs., 18 figs.

Tomasko, D.

1989-03-01

36

Environmental assessments for the existing radioactive materials in the Weldon Spring raffinate pits. [Various radioactive residues and wastes from processing of uranium and thorium between 1957 and 1966  

Microsoft Academic Search

Various radioactive residues (raffinates) and wastes from the processing of uranium and thorium between 1957 and 1966 are stored in four pits at Weldon Spring, Missouri. The US Department of Energy (DOE) plans to stabilize all the contaminated materials on a long-term (more than 1000-year) basis. The effectiveness of stabilization measures are evaluated by estimating radioactive releases under two options:

J. Y. Yang; J. Wang

1985-01-01

37

Compilation and preliminary interpretation of hydrologic data for the Weldon Spring radioactive waste-disposal sites, St Charles County, Missouri; a progress report  

USGS Publications Warehouse

The Weldon Spring Chemical Plant is located just north of the drainage divide separating the Mississippi River and the Missouri River in St. Charles County, Missouri. From 1957 to 1966 the plant converted uranium-ore concentrates and recycled scrap to pure uranium trioxide, uranium tetrafluoride, and uranium metal. Residues from these operations were pumped to four large pits that had been excavated near the plant. Small springs and losing streams are present in the area. Water overlying the residue in the pits has a large concentration of dissolved solids and a different chemical composition compared to the native groundwater and surface water. This difference is indicated by the concentrations of calcium, sodium, sulfate, nitrate, fluoride, uranium, radium, lithium, molybdenum, strontium, and vanadium, all of which are greater than natural or background concentrations. Water from Burgermeister Spring, located about 1.5 miles north of the chemical plant area, contains uranium and nitrate concentrations greater than background concentrations. Groundwater in the shallow bedrock aquifer moves northward from the vicinity of the chemical plant toward Dardenne Creek. An abandoned limestone quarry several miles southwest of the chemical plant also has been used for the disposal of radioactive waste and rubble. Groundwater flow from the quarry area is southward through the alluvium, away from the quarry and toward the Missouri River. The St. Charles County well field is located in the Missouri River flood plain near the quarry and the large yield wells are open to the Missouri River alluvial aquifer. Water from a well 4,000 ft southeast of the quarry was analyzed; there was no indication of contamination from the quarry. Additional water quality and water level data are needed to determine if water from the quarry moves toward the well field. Observation wells need to be installed in the area between the chemical plant, pits, and Dardenne Creek. The wells would be used to provide access for measurements of depth to ground water and for the collection of water samples from the shallow bedrock aquifer. (Lantz-PTT)

Kleeschulte, M. J.; Emmett, L. F.

1986-01-01

38

Community Involvement as an Effective Institutional Control at the Weldon Spring Site, a U.S. Department of Energy Office of Legacy Management Site  

SciTech Connect

The U.S. Department of Energy (DOE) Weldon Spring Site Remedial Action Project (WSSRAP) was conducted for the purpose of remediating a portion of a former trinitrotoluene and dinitrotoluene production plant that was operational from 1941 to 1945 and a former uranium refinery that was operational from 1957 to 1966. Surface remediation activities concluded in 2001 with the completion of a 45-acre (.18 square kilometer) on-site engineered disposal facility. Long-term surveillance and maintenance activities at the site were officially transferred to the DOE Office of Legacy Management in 2003. The Weldon Spring Site is located within the St. Louis, Missouri, metropolitan area (population 3 million). DOE's close relationship with surrounding land owners created a need for innovative solutions to long-term surveillance and maintenance issues at the site. Through a Secretarial proclamation, a plan was established for development of a comprehensive public involvement and education program. This program would act as an institutional control to communicate the historical legacy of the site and would make information available about contamination present at the site to guide people in making decisions about appropriate site activities. In August 2002, the Weldon Spring Site Interpretive Center opened to the public with exhibits about the history of the area, the remediation work that was completed, and a site information repository that is available to visitors. In addition, the Hamburg Trail for hiking and biking was constructed as a joint DOE/MDC effort. The 8-mile trail travels through both DOE and MDC property; a series of historical markers posted along its length to communicate the history of the area and the remediation work that was done as part of WSSRAP activities. A ramp and viewing platform with informational plaques were constructed on the disposal cell to provide an additional mechanism for public education. With a basic marketing program, site visitor-ship has been steadily increasing. In 2005, approximately 15,400 visitors were associated with Interpretive Center operations and outreach activities. Science-oriented educational programs that directly relate to past remediation activities and present long-term surveillance and maintenance issues have been developed and are presented to St. Louis area school groups and other community-based organizations. Other innovative programs have been developed to address daily maintenance issues at the site and to promote beneficial community re-use of the property. Approximately 30,000 square feet of the former Administration Building has been transferred through a use-permit to Lindenwood University, a local institution with a total enrollment of about 12,000 students. Lindenwood is establishing a satellite college campus in the building in exchange for providing basic maintenance and payment of utilities for both the Administration Building and Interpretive Center. A volunteer program developed to address maintenance of the native plant gardens that surround the Interpretive Center has a current enrollment of approximately 25 volunteers. Another volunteer group of prairie ecosystem experts has been meeting regularly for the last 3 years to assist the site in long-term management of the established prairie surrounding the disposal cell. Public support of these community involvement activities at the site is strong. DOE has worked closely with the Weldon Spring Citizens Commission in developing the concepts for this approach and the Commission has helped promote these activities within the community. It is expected that continued public education in this manner will only serve to strengthen the institutional control commitments at the Weldon Spring Site. (authors)

Deyo, Y.E. [S.M. Stoller Corporation, Weldon Spring Site, 7295 Highway 94 South, St. Charles, MO 63304 (United States); Pauling, T. [U.S. Department of Energy, Office of Legacy Management, 2597 B3/4 Road, Grand Junction, CO 81503 (United States)

2006-07-01

39

WELDON SPRING FORMER ARMY  

E-print Network

operation, the site produced explosives including trinitrotoluene (TNT) and dinitrotoluene (DNT) for the U production lines, and eight areas where explosive wastes were burned. Approximately 5,000 people live within LISTING HISTORY This site is being addressed through Federal actions. Proposed Date: 07/14/89 Final Date

40

Spiral springs and microspiral springs for chemical and biological sensing  

NASA Astrophysics Data System (ADS)

This work demonstrates that a mechanical device based on spiral spring or microspiral spring has a broad range of applications for detection of chemical and biological species. The surface stress changes or polymer volume changes on one side of the spiral spring extend or contract a spiral spring. The macrosize spiral spring can be used for power-free sensor development.

Ji, Hai-Feng; Lu, Yanqing; Du, Hongwei; Xu, Xiaohe; Thundat, Thomas

2006-02-01

41

CHEMICAL ENGINEERING Fall Term Spring Term  

E-print Network

CHEMICAL ENGINEERING CURRICULUM FALL 2010 Fall Term Spring Term EGGG 101 Introduction to Chemical Engineering 3 MATH 242 Analytic Geometry & Calculus B 4 MATH 243 Analytic Geometry & Calculus C 4 Critical Reading and Writing 3 Breadth Requirement Elective 1 3 15 17 CHEG 231 Chemical Engineering

Lee, Kelvin H.

42

CHEMICAL ENGINEERING Fall Term Spring Term  

E-print Network

CHEG 332 Chemical Engineering Kinetics 3 CHEG 342 Heat and Mass Transfer 3 CHEG 341 Fluid Mechanics 3CHEMICAL ENGINEERING CURRICULUM Fall Term Spring Term EGGG 101 Introduction to Engineering (FYE) 2 CHEG 112 Introduction to Chemical Engineering 3 CHEM 111 General Chemistry 3 CHEM 112 General Chemistry

Lee, Kelvin H.

43

Chemical analyses of selected thermal springs and wells in Wyoming  

SciTech Connect

Basic chemical data for 27 selected thermal well and springs in Wyoming are presented. The samples were gathered from 1979 through 1982 in an effort to define geothermal resources in Wyoming. The basic data for the 27 analyzed samples generally include location, temperature, flow, date analyzed, and a description of what the sample is from. The chemical analyses for the sample are listed.

Heasler, H.P.

1984-06-01

44

Chemical characteristics of the major thermal springs of Montana  

USGS Publications Warehouse

Twenty-one thermal springs in western Montana were sampled for chemical, isotope, and gas compositions. Most of the springs issue dilute to slightly saline sodium-bicarbonate waters of neutral to slightly alkaline pH. A few of the springs issue sodium-mixed anion waters of near neutral pH. Fluoride concentrations are high in most of the thermal waters, up to 18 milligramsper litre, while F/Cl ratios range from 3/1 in the dilute waters to 1/10 in the slightly saline waters. Most of the springs are theoretically in thermodynamic equilibrium with respect to calcite and fluorite. Nitrogen is the major gas escaping from most of the hot springs; however, Hunters Hot Springs issue principally methane. The deuterium content of the hot spring waters is typical of meteoric water in western Montana. Geothermal calculations based on silica concentrations and Na-K-Ca ratios indicate that most of the springs are associated with low temperature aquifers (less than 100?C). Chalcedony may be controlling the silica concentrations in these low temperature aquifers even in 'granitic' terranes.

Mariner, R.H.; Presser, T.S.; Evans, W.C.

1976-01-01

45

Chemical and isotopic composition of water from thermal springs and mineral springs of Washington  

USGS Publications Warehouse

Water from thermal springs of Washington range in chemical composition from dilute NaHC03, to moderately saline C02-charged NaHC03-Cl waters. St. Martin 's Hot Spring which discharges a slightly saline NaCl water, is the notable exception. Mineral springs generally discharge a moderately saline C02-charged NaHC03-Cl water. The dilute Na-HC03 waters are generally associated with granite. The warm to hot waters charged with C02 issue on or near the large stratovolcanoes and many of the mineral springs also occur near the large volcanoes. The dilute waters have oxygen isotopic compositions which indicate relatively little water-rock exchange. The C02-charged waters are usually more enriched in oxygen-18 due to more extensive water-rock reaction. Carbon-13 in the C02-charged thermal waters is more depleted (-10 to -12 permil) than in the cold C02-charged soda springs (-2 to -8 permil) which are also scattered throughout the Cascades. The hot and cold C02-charged waters are supersaturated with respect to CaC03, but only the hot springs are actively depositing CaC03. Baker, Gamma, Sulphur , and Ohanapecosh seem to be associated with thermal aquifers of more than 100C. (USGS)

Mariner, R.H.; Presser, T.S.; Evans, W.C.

1982-01-01

46

Spring  

NSDL National Science Digital Library

Consider the object attached to a spring in The animation considers an object attached to a spring. Assume that the spring is ideal (i.e. spring has no mass and the force required to stretch or compress the spring is given by Hooke's law). There are no external forces acting on the object-spring system. The user is asked to answer questions about the object-spring system.

Christian, Wolfgang; Belloni, Mario

2008-02-19

47

Chemical, isotopic, and gas compositions of selected thermal springs in Arizona, New Mexico, and Utah  

USGS Publications Warehouse

Twenty-seven thermal springs in Arizona, New Mexico, and Utah were sampled for detailed chemical and isotopic analysis. The springs issue sodium chloride, sodium bicarbonate, or sodium mixed-anion waters of near neutral (6.2) to alkaline (9.2) pH. High concentrations of fluoride, more than 8 milligrams per liter, occur in Arizona in waters from Gillard Hot Springs, Castle Hot Springs, and the unnamed spring of Eagle Creek, and in New Mexico from springs along the Gila River. Deuterium compositions of the thermal waters cover the same range as those expected for meteoric waters in the respective areas. The chemical compositions of the thermal waters indicate that Thermo Hot Springs in Utah and Gillard Hot Springs in Arizona represent hydrothermal systems which are at temperatures higher than 125 deg C. Estimates of subsurface temperature based on the quartz and Na-K-Ca geothermometer differ by up to 60 deg C for Monroe, Joseph, Red Hill, and Crater hot springs in Utah. Similar conflicting estimates of aquifer temperature occur for Verde Hot Springs, the springs near Clifton and Coolidge Dam, in Arizona; and the warm springs near San Ysidro, Radium Hot Springs, and San Francisco Hot Springs, in New Mexico. Such disparities could result from mixing, precipitation of calcium carbonate, or perhaps appreciable concentrations of magnesium. (Woodard-USGS)

Mariner, R.H.; Presser, T.S.; Evans, W.C.

1977-01-01

48

CHEMISTRY COURSE OFFERINGS SPRING, 2013 CHEM 0001-01 CHEMICAL FUNDAMENTALS W/LAB  

E-print Network

for credit. Campbell CHEM 0002-01 CHEMICAL PRINCIPLES W/LAB Properties of solutions, chemical kineticsCHEMISTRY COURSE OFFERINGS SPRING, 2013 (10/31/12) CHEM 0001-01 CHEMICAL FUNDAMENTALS W/LAB Atomic to the physical and chemical properties of matter, patterns of chemical reactions, stoichiometry

Kounaves, Samuel P.

49

Geologic setting and chemical characteristics of hot springs in central and western Alaska  

USGS Publications Warehouse

Numerous hot springs occur in a variety of geologic provinces in central and western Alaska. Granitic plutons are common to all the provinces and the hot springs are spatially associated with the contacts of these plutons. Of 23 hot springs whose bedrock geology is known, all occur within 3 miles of a granitic pluton. The occurrence of hot springs, however, appears to be independent of the age, composition, or magmatic history of the pluton. Preliminary chemical and isotopic analyses suggest the hot springs waters belong to two groups. Most of the analyzed hot springs appear to have chemical and isotopic compositions indicating they were derived from deeply circulating meteoric water. About 25 percent of the analyzed hot springs show a distinct saline character with high concentrations of chloride, sodium, potassium, and calcium indicating either much more complex water-rock reactions than occurred in the other hot springs or the addition of another type of water. The present chemical and isotopic data are insufficient to determine the source of the constituents of the saline hot springs. Chemical geothermometers suggest subsurface temperatures in the general range of 100?C to 160?C. If the hot spring waters have derived their heat solely from deep circulation, the waters must have reached depths of 9,000 to 15,000 feet, assuming geothermal gradients of 30?C to 50?C/km. If hot magmatic water has Seen added to the geothermal systems or if dilution or mixing has occurred, temperatures of 100?C to 160?C may be reached at shallower depths. The geologic and chemical data are too preliminary to make an estimate of the potential of the hot springs as a geothermal resource. The data suggest, however, that most of the hot springs of central and western Alaska have relatively low subsurface temperatures and limited reservoir capacities in comparison with geothermal areas presently being utilized for electrical power generation.

Miller, Thomas P.; Barnes, Ivan; Pattan, William Wallace, Jr.

1973-01-01

50

ALONGSHORE VARIABILITY OF THE CALIFORNIA CURRENT SYSTEM FROM CENTRAL TO BAJA CALIFORNIA IN WINTER AND SPRING 2003: PHYSICAL, CHEMICAL AND BIOLOGICAL PROPERTIES  

E-print Network

AND SPRING 2003: PHYSICAL, CHEMICAL AND BIOLOGICAL PROPERTIES ALONGSHORE VARIABILITY OF THE CALIFORNIA IN WINTER AND SPRING 2003: PHYSICAL, CHEMICAL AND BIOLOGICAL PROPERTIES ALONGSHORE VARIABILITY CURRENT SYSTEM FROM CENTRAL TO BAJA CALIFORNIA IN WINTER AND SPRING 2003: PHYSICAL, CHEMICAL

Pennington, J. Timothy

51

Spring  

NSDL National Science Digital Library

Depending on where you are, spring is either wrapping up or just around the bend. From the sounds of spring peepers peeping to birds chirping, this is definitely the season of re-birth. Check out this handful of sites that look at some of the signs of spring.The first site (1), from naturesound.com, allows you to hear the chorus of a truly spring sound: spring peepers. Next, from Education World, is a good collection of lesson plans for any teachers out there hoping to bring some spring fever into the classroom, or at least try to harness it(2). The Chicago Tribune (3)has the spirit with this feature on the signs of spring in the third site. The fourth site (4), from the Illinois State Museum, will help those out there considering putting in their own prairie garden this spring -- a perfect time to plant. The fifth site (5) is from eNature.com and offers a great look at the spring migration. Lastly is a show from NPR on spring bugs (4).

52

Chemical analyses of thermal and nonthermal springs in Lassen Volcanic National Park and vicinity, California  

USGS Publications Warehouse

Most thermal waters issuing in Lassen Volcanic National Park (LVNP) are acidic (pH =3.5), low-Cl (concentrations =30 mg/L) hot springs which are characteristic of vapor-dominated hydrothermal systems and, as such, are not useful for liquid chemical geothermometry. Thermal waters at Drakesbad and in Little Hot Springs Valley, hot spring localities characterized by neutral pH and low Cl containing water, may have equilibrated in shallow aquifers so that temperatures estimated by both the Na-K-Ca and Na-Li geothermometers approach the measured spring temperatures of 65? to 95?C. Waters rich in chloride (>2000 mg/L), such as those at Growler Hot Spring and Morgan Hot Springs, situated south of LVNP, are the most appropriate springs for liquid chemical geothermometry and indicate subsurface temperatures between 220? and 230?C. The chemical and thermal characteristics of these springs may result either from boiling at depth and subsequent mixing with meteoric water or from conductive cooling during lateral flow. In either case ~220? to 230?C thermal water probably originates inside LVNP and flows south to Morgan Hot Springs.

Thompson, J.M.

1983-01-01

53

Chemical and isotopic data for water from thermal springs and wells of Oregon  

SciTech Connect

The thermal springs of Oregon range in composition from dilute NaHCO/sub 3/ waters to moderately saline CO/sub 2/-charged NaCl-NaHCO/sub 3/ waters. Most of the thermal springs are located in southeastern or southcentral Oregon, with a few in northeastern Oregon and near the contact of the Western Cascades with the High Cascades. Thermal springs in the central and northern parts of the Cascades generally issue moderately saline NaCl waters. Farther south in the Cascades, the thermal waters are high in CO/sub 2/ as well as chloride. Most thermal springs in northeastern Oregon issue dilute NaHCO/sub 3/ waters of high pH (>8.5). These waters are similar to the thermal waters which issue from the Idaho batholith, farther east. Most of the remaining thermal waters are Na mixed-anion waters. Based on the chemical geothermometers, Mickey Srpings, Hot Borax Lake, Alvord Hot Springs, Neal Hot Springs, Vale Hot Springs, Crump Well, Hunters (Lakeview) Hot Springs, and perhaps some of the springs in the Cascades are associated with the highest temperature systems (>150/sup 0/C).

Mariner, R.H.; Swanson, J.R.; Orris, G.J.; Presser, T.S.; Evans, W.C.

1981-01-01

54

Congressman Dave Weldon enjoys viewing the STS-97 launch  

NASA Technical Reports Server (NTRS)

Florida Congressman Dave Weldon enjoys the on-time launch of Space Shuttle Endeavour on the sixth construction flight to the International Space Station. Weldon and other guests of NASA viewed the launch from the Banana Creek VIP viewing site. Liftoff of Endeavour occurred at 10:06:01 p.m. EST. Endeavour is transporting the P6 Integrated Truss Structure that comprises Solar Array Wing-3 and the Integrated Electronic Assembly, to provide power to the Space Station. The 11-day mission includes two spacewalks to complete the solar array connections. Endeavour is expected to land Dec. 11 at 6:19 p.m. EST.

2000-01-01

55

HumanWildlife Interactions 4(1):112117, Spring 2010 An effective chemical deterrent for invasive  

E-print Network

Human­Wildlife Interactions 4(1):112­117, Spring 2010 An effective chemical deterrent for invasive frogs. Key Words: Cuban treefrog, deterrent, human­wildlife conflicts, invasive species, nuisance) and monk parakeets (Myiopsitta monachus), indirectly affect humans by causing disruption of electrical

56

Radon in soil and chemical composition of spring water near Popocatpetl volcano, Mexico  

Microsoft Academic Search

Soil radon was monitored at two permanent stations on the northern flank of Popocatpetl volcano. Water samples from three springs around the cone were also studied for radon and chemical composition. Radon in soil was recorded using track detectors, and sporadic short-term measurements were obtained with a Clipperton probe. Radon in water samples was measured using a liquid scintillation method.

N. Segovia; M. A. Armienta; J. L. Seidel; M. Monnin; P. Pea; M. B. E. Lpez; M. Mena; C. Valds; E. Tamez; R. N. Lpez; P. Aranda

2002-01-01

57

CAES 2014 Chemical Analyses of Thermal Wells and Springs in Southeastern Idaho  

DOE Data Explorer

This dataset contains chemical analyses for thermal wells and springs in Southeastern Idaho. Data includes all major cations, major anions, pH, collection temperature, and some trace metals, These samples were collected in 2014 by the Center for Advanced Energy Studies (CAES), and are part of a continuous effort to analyze the geothermal potential of Southeastern Idaho.

Jeffrey Baum

58

Aqua de Ney, California, a spring of unique chemical character  

USGS Publications Warehouse

The chemistry of water of Aqua de Ney, a cold spring of unusual character located in Siskiyou County, Calif., has been re-examined as part of a study of the relation of water chemistry to rock environment. The water has a pH of 11??6 and a silica content of 4000 parts per million (p.p.m.), the highest values known to occur in natural ground waters. The rocks exposed nearby consist of two volcanic sequences, one predominantly basaltic in composition, the other highly siliceous. Neither these rocks nor the sedimentary and igneous rocks presumed to underlie the area at depth seem to offer explanation of the unusual mineralization which includes 240 p.p.m. of boron, 1000 p.p.m. of sulphide (as H2S), and 148 p.p.m. of ammonia nitrogen (as NH4) in a water that is predominantly sodium chloride and sodium carbonate in character. By analogy, it is assumed that water from Aqua de Ney is the product of an initial mixture of connate sea water with a calcium magnesium sulphate water. It is postulated that ion exchange has increased the content of sodium and reduced that of calcium and magnesium, and that sulphate reduction has brought about the high alkalinity, high pH, and high content of sulphide. The large silica value is explained as the result of solution of silica by water having the high pH observed. ?? 1961.

Feth, J.H.; Rogers, S.M.; Roberson, C.E.

1961-01-01

59

Abrupt physical and chemical changes during 1992-1999, Anderson Springs, SE Geyser Geothermal Field, California  

USGS Publications Warehouse

The Anderson Springs area is located about 90 miles (145 kilometers) north of San Francisco, California, in the southwestern part of Lake County. The area was first developed in the late 1800s as a health resort, which was active until the 1930s. Patrons drank a variety of cool to hot mineral waters from improved springs, swam in various baths and pools, and hiked in the rugged hills flanking Anderson Creek and its tributaries. In the bluffs to the south of the resort were four small mercury mines of the eastern Mayacmas quicksilver district. About 1,260 flasks of mercury were produced from these mines between 1909 and 1943. By the early 1970s, the higher ridges south and west of Anderson Springs became part of the southeast sector of the greater Geysers geothermal field. Today, several electric power plants are built on these ridges, producing energy from a vapor-dominated 240 C reservoir. Only the main hot spring at Anderson Springs has maintained a recognizable identity since the 1930s. The hot spring is actually a cluster of seeps and springs that issue from a small fault in a ravine southwest of Anderson Creek. Published and unpublished records show that the maximum temperature (Tm) of this cluster fell gradually from 63C in 1889 to 48C in 1992. However, Tm of the cluster climbed to 77C in 1995 and neared boiling (98C) in 1998. A new cluster of boiling vents and small fumaroles (Tm = 99.3C) formed in 1998 about 30 m north of the old spring cluster. Several evergreen trees on steep slopes immediately above these vents apparently were killed by the new activity. Thermal waters at Anderson Hot Springs are mostly composed of near-surface ground waters with some added gases and condensed steam from The Geysers geothermal system. Compared to gas samples from Southeast Geysers wells, the hot spring gases are higher in CO2 and lower in H2S and NH3. As the springs increased in temperature, however, the gas composition became more like the mean composition of steam discharges from the Southeast Geysers. The hot spring waters are low in ions of Cl, B, and Li, but relatively high in HCO3, SO4 and NH4. The stable-isotope compositions (deuterium and oxygen-18) of these waters plot near the global meteoric water line. Geochemical data through time reveal apparent maxima in the concentrations of SO4, Fe, and Mn in 1991 to 1992, before the cluster became hotter. The black-to-gray deposits from the new spring cluster are rich in pyrite and contain anomalous metals. About one-half mile to the east of the hot springs, mineralized water discharges intermittently from an old adit of the Schwartz (Anderson) mine, and enters a tributary of Anderson Creek. This drainage increased substantially in July 1998, and a slurry of mine water and precipitates were transported down the tributary and into Anderson Creek. In December 1998, the adit water was 22C, and had a chemical composition that was similar to spring waters that once discharged in the ravines surrounding the old Anderson Springs resort. The cause for the abrupt changes that have occurred in thermal features at Anderson Springs is still not resolved. One possibility is that these changes are a response to withdrawal of steam from The Geysers geothermal field over more than 20 years of production. Pressure declines in the geothermal reservoir may have caused a "drying out" of the overlying condensation zone. Induced boiling in this zone and upflow of deep steam to shallower depths would cause heating and vaporization of shallow ground waters. In addition, earthquakes occurring in the vicinity of Anderson Springs have increased significantly after nearby geothermal power plants began operation. These earthquakes may have enhanced surface discharge of thermal fluids along fractures and faults.

Janik, Cathy J.; Goff, Fraser; Walter, Stephen R.; Sorey, Michael L.; Counce, Dale; Colvard, Elizabeth M.

2000-01-01

60

Chemical composition data and calculated aquifer temperature for selected wells and springs of Honey Lake Valley, California  

USGS Publications Warehouse

Major element, minor element, and gas composition data are tabulated for 15 springs and wells in Honey Lake Valley, California. Wendel and Amedee hot springs issue Na-S04-C1 waters at boiling or near boiling temperatures; the remaining springs and wells issue Na-HC03 waters at temperatures ranging from 14 to 33 deg C. Gases escaping from the hot springs are principally nitrogen with minor amounts of methane. The geothermometers calculated from the chemical data are also tabulated for each spring. (Woodard-USGS)

Mariner, R.H.; Presser, T.S.; Evans, W.C.

1976-01-01

61

Physical characteristics and chemical quality of selected springs in parts of Juab, Millard, Tooele, and Utah counties, Utah  

USGS Publications Warehouse

Hydrologic, geologic, and partial water quality data were collected at 90 selected springs in west-central Utah, and chemical analyses performed on water samples from 62 of the springs. Descriptions of the physiographic and geologic conditions, climate, and vegetation patterns for the study area are included. Allowable limits of certain chemical constituents in water for human and livestock consumption are included with the water quality data. Three classifications of springs were established based on physical characteristics of the springs, and chemical composition of the springflow: (1) mountain springs; (2) non-thermal valley springs, and (3) thermal valley springs. Mountain springs are in and near recharge areas, have seasonal variations of discharge and temperature, typically discharge from extrusive and metamorphic geohydrologic units, and generally discharge freshwater. Non-thermal valley springs are peripheral to recharge areas, have seasonal variations of discharge and temperature, typically discharge from a variety of geohydrologic units, and have variable water composition. Thermal valley springs are near topographic low areas of valleys , and have little seasonal variation of discharge or temperature. They typically discharge from unconsolidated deposits (but the discharge probably has flowed through buried carbonate geohydrologic units). They also have a considerable range of water composition that reflects the relative complexity of the groundwater system. (Author 's abstract)

Wilberg, D. E.; Stolp, B. J.

1985-01-01

62

Chemical studies of selected trace elements in hot-spring drainages of Yellowstone National Park  

SciTech Connect

Intensive chemical studies were made of S(-II), O/sub 2/, Al, Fe, Mn, P, As(III), As(V), and Li in waters from two high-Cl, low Ca-Mg hotspring drainages in the Lower Geyser Basin, a warm spring system rich in Ca and Mg in the Yellowstone Canyon area, and the Madison River system above Hebgen Lake. Analyses were also made of other representative thermal waters from the Park.

Stauffer, R.E.; Jenne, E.A.; Ball, J.W.

1980-01-01

63

Spring, 2009 ACS Process Spectroscopy/Society for Applied Spectroscopy Meeting Topic: Discussion of current research into insitu chemical sensors  

E-print Network

Spring, 2009 ACS Process Spectroscopy/Society for Applied Spectroscopy Meeting Topic: Discussion of current research into insitu chemical sensors Speaker: Dr. Karl Booksh, University in chemometrics and sensor research. He was previously the codirector of Arizona Applied Nanosensors

Taber, Douglass

64

Determination of the sources of nitrate contamination in karst springs using isotopic and chemical indicators  

USGS Publications Warehouse

The sources of nitrate (NO-3) in groundwater of the shallow karst aquifer in southwestern Illinois' sinkhole plain were investigated using chemical and isotopic techniques. The groundwater in this aquifer is an important source of potable water for about half of the residents of the sinkhole plain area. Previous work has shown that groundwater from approximately 18% of the wells in the sinkhole plain has NO-3 concentrations in excess of the USEPA's drinking water standard of 10 mg N/1. Relative to background levels, the NO-3 concentrations in water from 52% of the wells, and probably all of the springs in the study area, are anomalously high, suggesting that sources other than naturally occurring soil organic matter have contributed additional NO-3 to groundwater in the shallow karst aquifer. This information, and the dominance of agriculture in the study area, suggest that agrichemical contributions may be significant. To test this hypothesis, water samples from 10 relatively large karst springs were collected during four different seasons and analyzed for inorganic constituents, dissolved organic carbon, atrazine, and ??15N and ??18O of the NO-3 ions. The isotopic data were most definitive and suggested that the sources of NO-3 in spring water are dominated by N-fertilizer with some possible influence of atmospheric NO-3 and, to a much lesser extent, human and/or animal waste. Differences in the isotopic composition of NO-3 and some of the chemical characteristics were observed during the four consecutive seasons in which spring water samples were collected. Isotopic values for ??15N and ??18O of the NO-3 ranged from 3.2??? to 19.1??? and from 7.2??? to 18.7???, respectively. The trend of ??15N and ??18O data for NO-3 also indicated that a significant degree of denitrification is occurring in the shallow karst hydrologic system (within the soil zone, the epikarst and the shallow karst aquifer) prior to discharging to springs. ?? 2001 Elsevier Science B.V. All rights reserved.

Panno, S.V.; Hackley, K.C.; Hwang, H.-H.; Kelly, W.R.

2001-01-01

65

Chemical transport model ozone simulations for spring 2001 over the western Pacific: Regional ozone production and its global impacts  

Microsoft Academic Search

The spatial and temporal variation in ozone production over major source regions in East Asia during the NASA Transport and Chemical Evolution over the Pacific (TRACE-P) measurement campaign in spring 2001 is assessed using a global chemical transport model. There is a strong latitudinal gradient in ozone production in springtime, driven by regional photochemistry, which rapidly diminishes as the season

Oliver Wild; Michael J. Prather; Hajime Akimoto; Jostein K. Sundet; Ivar S. A. Isaksen; James H. Crawford; Douglas D. Davis; Melody A. Avery; Yutaka Kondo; Glen W. Sachse; Scott T. Sandholm

2004-01-01

66

Physical, chemical, and isotopic data for samples from the Anderson Springs area, Lake County, California, 1998-1999  

USGS Publications Warehouse

Anderson Springs is located about 90 miles (145 kilometers) north of San Francisco, California, in the southwestern part of Lake County. The area was first developed in the late 1800s as a health resort, which was active until the 1930s. In the rugged hills to the south of the resort were four small mercury mines of the eastern Mayacmas quicksilver district. About 1,260 flasks of mercury were produced from these mines between 1909 and 1943. In the 1970s, the high-elevation areas surrounding Anderson Springs became part of The Geysers geothermal field. Today, several electric powerplants are located on the ridges above Anderson Springs, utilizing steam produced from a 240C vapor-dominated reservoir. The primary purpose of this report is to provide physical, chemical, and isotopic data on samples collected in the Anderson Springs area during 1998 and 1999, in response to a Freedom of Information Act request. In July 1998, drainage from the Schwartz adit of the abandoned Anderson mercury mine increased substantially over a 2-day period, transporting a slurry of water and precipitates down a tributary and into Anderson Creek. In August 1998, J.J. Rytuba and coworkers sampled the Schwartz adit drainage and water from the Anderson Springs Hot Spring for base metal and methylmercury analysis. They measured a maximum temperature (Tm) of 85C in the Hot Spring. Published records show that the temperature of the Anderson Springs Hot Spring (main spring) was 63C in 1889, 4252C from 1974 through 1991, and 77C in March 1995. To investigate possible changes in thermal spring activity and to collect additional samples for geochemical analysis, C.J. Janik and coworkers returned to the area in September and December 1998. They determined that a cluster of springs adjacent to the main spring had Tm=98C, and they observed that a new area of boiling vents and small fumaroles (Tm=99.3C) had formed in an adjacent gully about 20 meters to the north of the main spring. During AugustOctober 1999, several field trips were conducted in the vicinity of Anderson Springs to continue monitoring and sampling the thermal manifestations. The new fumarolic area had increased in temperature and in discharge intensity since 1998, and a zone of dead trees had developed on the steep bank directly west of the fumaroles. Ground temperatures and diffuse flow of CO2 flow through soils were measured in the area surrounding the main spring and new fumaroles and in the zone of tree-kill.

Janik, C. J.; Goff, F.; Sorey, M. L.; Rytuba, J. J.; Counce, D.; Colvard, E. M.; Huebner, M.; White, L. D.; Foster, A.

1999-01-01

67

Chemical and hydrologic data for selected thermal-water wells and nonthermal springs in the Boise Area, southwesten Idaho  

USGS Publications Warehouse

Data were collected during January to July 1988 from 37 thermal-water wells and 3 nonthermal springs in the Boise area, southwestern Idaho. Included are well and spring locations; well-construction, water-level, and water-use information; hydrographs of water levels in 3 wells; chemical and isotopic analyses of water from 18 thermal-water wells and 3 nonthermal springs; and drillers ' logs from 23 wells. The purpose of the report is to make these data conveniently available to the public. (USGS)

Young, H.W.; Parliman, D.J.; Mariner, R.H.

1988-01-01

68

Geologic setting and chemical characteristics of hot springs in central and western Alaska. [Subsurface temperature of 100°C to 160°C  

Microsoft Academic Search

Numerous hot springs occur in a variety of geologic provinces in central and western Alaska. Granitic plutons are common to all the provinces and the hot springs are spatially associated with the contacts of these plutons. Of 23 hot springs whose bedrock geology is known, all occur within 3 miles of a granitic pluton. Preliminary chemical and isotopic analyses suggest

T. P. Miller; I. Barnes; W. W. Jr. Patton

1973-01-01

69

n 1962, Rachel Carson's Silent Spring was published, triggering public concern over chemical residues in food and the environ-  

E-print Network

- lenged traditional gender stereotypes. Finally, as an estrogenic chemical, DDT itself had the potential gender stereotypes. Second, the reception to Silent Spring reveals assumptions about gender and pesticides have been detected in the cord blood of mi- nority American infants (EWG 2009). DDT, Gender

Langston, Nancy

70

Chemical trends in the Ice Springs basalt, Black Rock Desert, Utah  

SciTech Connect

The Holocene Ice Springs volcanic field of west-central Utah consists of 0.53 km/sup 3/ of tholeiitic basalts erupted as a sequence of nested cinder cones and associated lava flows. Whole rock x-ray fluorescence and atomic absorption analysis of ninety-six samples of known relative age document statistically significant inter- and intra-eruption chemical variations. Elemental trends include increases in Ti, Fe, Ca, P, and Sr and decreases in Si, K, Rb, Ni, Cr, and Zr with decreasing age. Microprobe analyses of microphenocrysts of olivine, plagioclase, and Fe-Ti oxides and of groundmass olivine, plagioclase, and clinopyroxene indicate limited chemical variation between mineral assemblages of the eruptive events. Petrographic analyses have identified the presence of minor amounts of silicic xenoliths, orthopyroxene megacrysts, and plagioclase xenocrysts. Potassium-argon determinations establish the existence of excess argon in the basaltic cinder (30.05 x 10/sup -12/ moles/gm) and in distal lava flows (8.29 x 10/sup -12/ moles/gm) which suggest apparent ages of 16 and 4.3 million years respectively. Strontium isotopic data (Puskar and Condie, 1973) show systematic variations from oldest eruptions (87Sr/86Sr=0.7052) to youngest eruptions (87Sr/86Sr=0.7059).

Lynch, W.C.; Nash, W.P.

1980-06-01

71

Chemical, isotopic, and dissolved gas compositions of the hot springs of the Owyhee Uplands, Malheur County, Oregon  

USGS Publications Warehouse

Hot springs along the Owyhee River in southeastern Oregon between Three Forks and Lake Owyhee could be part of a north flowing regional system or a series of small separate geothermal systems Heat for the waters could be from a very young (Holocene) volcanic activity (basalt flows) of the Owyhee Uplands or the regional heat flow. The springs discharge warm to hot, dilute, slightly alkaline, sodium bicarbonate water. Chemically they are similar to the dilute thermal water at Bruneau Grand View and Twin Falls, Idaho. Maximum aquifer temperatures in the Owyhee Uplands, estimated from chemical geothermometry, are about 100C. Dissolved helium concentrations, carbon 14 activity, and chemical and isotope data are examined fro systematic trends which would indicate a geothermal system of regional extent.

Mariner, R. H.; Young, H. W.; Evans, W. C.

1994-01-01

72

Influence of mineral weathering reactions on the chemical composition of soil water, springs, and ground water, Catoctin Mountains, Maryland  

USGS Publications Warehouse

During 1983 and 1984, wet precipitation was primarily a solution of dilute sulphuric acid, whereas calcium and bicarbonate were the major ions in springs and ground water in two small watersheds with a deciduous forest cover in central Maryland. Dominant ions in soil water were calcium, magnesium, and sulphate. The relative importance of mineral weathering reactions on the chemical composition of these subsurface waters was compared to the contribution from wet precipitation, biological processes, and road deicing salts. -from Author

Katz, B.G.

1989-01-01

73

Calculation of the Relative Chemical Stabilities of Proteins as a Function of Temperature and Redox Chemistry in a Hot Spring  

PubMed Central

Uncovering the chemical and physical links between natural environments and microbial communities is becoming increasingly amenable owing to geochemical observations and metagenomic sequencing. At the hot spring known as Bison Pool in Yellowstone National Park, the cooling of the water in the outflow channel is associated with an increase in oxidation potential estimated from multiple field-based measurements. Representative groups of proteins whose sequences were derived from metagenomic data also exhibit an increase in average oxidation state of carbon in the protein molecules with distance from the hot-spring source. The energetic requirements of reactions to form selected proteins used in the model were computed using amino-acid group additivity for the standard molal thermodynamic properties of the proteins, and the relative chemical stabilities of the proteins were investigated by varying temperature, pH and oxidation state, expressed as activity of dissolved hydrogen. The relative stabilities of the proteins were found to track the locations of the sampling sites when the calculations included a function for hydrogen activity that increases with temperature and is higher, or more reducing, than values consistent with measurements of dissolved oxygen, sulfide and oxidation-reduction potential in the field. These findings imply that spatial patterns in the amino acid compositions of proteins can be linked, through energetics of overall chemical reactions representing the formation of the proteins, to the environmental conditions at this hot spring, even if microbial cells maintain considerably different internal conditions. Further applications of the thermodynamic calculations are possible for other natural microbial ecosystems. PMID:21853048

Dick, Jeffrey M.; Shock, Everett L.

2011-01-01

74

Calculation of the relative chemical stabilities of proteins as a function of temperature and redox chemistry in a hot spring.  

PubMed

Uncovering the chemical and physical links between natural environments and microbial communities is becoming increasingly amenable owing to geochemical observations and metagenomic sequencing. At the hot spring known as Bison Pool in Yellowstone National Park, the cooling of the water in the outflow channel is associated with an increase in oxidation potential estimated from multiple field-based measurements. Representative groups of proteins whose sequences were derived from metagenomic data also exhibit an increase in average oxidation state of carbon in the protein molecules with distance from the hot-spring source. The energetic requirements of reactions to form selected proteins used in the model were computed using amino-acid group additivity for the standard molal thermodynamic properties of the proteins, and the relative chemical stabilities of the proteins were investigated by varying temperature, pH and oxidation state, expressed as activity of dissolved hydrogen. The relative stabilities of the proteins were found to track the locations of the sampling sites when the calculations included a function for hydrogen activity that increases with temperature and is higher, or more reducing, than values consistent with measurements of dissolved oxygen, sulfide and oxidation-reduction potential in the field. These findings imply that spatial patterns in the amino acid compositions of proteins can be linked, through energetics of overall chemical reactions representing the formation of the proteins, to the environmental conditions at this hot spring, even if microbial cells maintain considerably different internal conditions. Further applications of the thermodynamic calculations are possible for other natural microbial ecosystems. PMID:21853048

Dick, Jeffrey M; Shock, Everett L

2011-01-01

75

Surface chemical reactivity and metal adsorptive properties of natural cyanobacterial mats from an alkaline hydrothermal spring,  

E-print Network

an alkaline hydrothermal spring, Yellowstone National Park S.V. Lalonde a,, L.A. Amskold a , L.A. Warren b , K-leachable metal contents. Potentiometric titration data of samples that were acid-washed to remove sorbed metals experimental values. In contrast, samples that were not acid-washed, but merely rinsed in titration electrolyte

Konhauser, Kurt

76

Using multiple chemical indicators to assess sources of nitrate and age of groundwater in a karstic spring basin  

USGS Publications Warehouse

Human health and ecological concerns have arisen due to a steady increase in nitrate-N concentrations during the past 40 years in Fannin Springs (0.3-4.7 mg/L), a regional discharge point with an average flow of >2.8 m3/second (>100 ft3/second) for water from the karstic Upper Floridan aquifer (UFA). Multiple chemical indicators (major dissolved species, 15N and 18O of nitrate, dissolved gases, 78 pesticides and degradates, and 67 organic compounds typically found in domestic and industrial wastewater) and transient tracers (3H/3He, chlorofluorocarbons [CFCs], sulfur hexafluoride [SF6]) were analyzed in water samples from nine wells along three transects and in spring water to assess groundwater age and potential contaminant sources. Land use is predominantly agricultural (52 percent) and forest (31 percent) in the 320 km2 (124 mi2) spring basin, which was delineated from a potentiometric-surface map of the UFA using high-resolution water-level data. Nitrate-N concentrations were highly variable in the oxic UFA and ranged from <0.02 to 4.7 mg/L. ?? 15N-NO3 values (3.4-9.9 per mil) indicated that nitrate contamination originated from inorganic sources (synthetic fertilizer) and organic sources (manure spreading or waste disposal). Higher nitrate concentrations and the younger age of spring water relative to water from upgradient wells indicate better communication with N sources at the surface. Apparent ages of groundwater correlated positively with well depth (P < 0.05) and were younger in water from wells nearer to the spring (<8 years) compared with other wells (10-50 years). Most transient tracer concentrations were consistent with binary mixing curves representing mixtures of water recharged during the past 10 years and older water (recharged before 1940). Young water mixing fractions ranged from 0.07 to 0.90. Trace levels of herbicides found in groundwater and spring water were indicative of applications for vegetative control in agricultural and other land-use types.

Katz, B.; Copeland, R.; Greenhalgh, T.; Ceryak, R.; Zwanka, W.

2005-01-01

77

Microbial and chemical characterization of underwater fresh water springs in the Dead Sea.  

PubMed

Due to its extreme salinity and high Mg concentration the Dead Sea is characterized by a very low density of cells most of which are Archaea. We discovered several underwater fresh to brackish water springs in the Dead Sea harboring dense microbial communities. We provide the first characterization of these communities, discuss their possible origin, hydrochemical environment, energetic resources and the putative biogeochemical pathways they are mediating. Pyrosequencing of the 16S rRNA gene and community fingerprinting methods showed that the spring community originates from the Dead Sea sediments and not from the aquifer. Furthermore, it suggested that there is a dense Archaeal community in the shoreline pore water of the lake. Sequences of bacterial sulfate reducers, nitrifiers iron oxidizers and iron reducers were identified as well. Analysis of white and green biofilms suggested that sulfide oxidation through chemolitotrophy and phototrophy is highly significant. Hyperspectral analysis showed a tight association between abundant green sulfur bacteria and cyanobacteria in the green biofilms. Together, our findings show that the Dead Sea floor harbors diverse microbial communities, part of which is not known from other hypersaline environments. Analysis of the water's chemistry shows evidence of microbial activity along the path and suggests that the springs supply nitrogen, phosphorus and organic matter to the microbial communities in the Dead Sea. The underwater springs are a newly recognized water source for the Dead Sea. Their input of microorganisms and nutrients needs to be considered in the assessment of possible impact of dilution events of the lake surface waters, such as those that will occur in the future due to the intended establishment of the Red Sea-Dead Sea water conduit. PMID:22679498

Ionescu, Danny; Siebert, Christian; Polerecky, Lubos; Munwes, Yaniv Y; Lott, Christian; Husler, Stefan; Bii?-Ionescu, Mina; Quast, Christian; Peplies, Jrg; Glckner, Frank Oliver; Ramette, Alban; Rdiger, Tino; Dittmar, Thorsten; Oren, Aharon; Geyer, Stefan; Strk, Hans-Joachim; Sauter, Martin; Licha, Tobias; Laronne, Jonathan B; de Beer, Dirk

2012-01-01

78

Microbial and Chemical Characterization of Underwater Fresh Water Springs in the Dead Sea  

PubMed Central

Due to its extreme salinity and high Mg concentration the Dead Sea is characterized by a very low density of cells most of which are Archaea. We discovered several underwater fresh to brackish water springs in the Dead Sea harboring dense microbial communities. We provide the first characterization of these communities, discuss their possible origin, hydrochemical environment, energetic resources and the putative biogeochemical pathways they are mediating. Pyrosequencing of the 16S rRNA gene and community fingerprinting methods showed that the spring community originates from the Dead Sea sediments and not from the aquifer. Furthermore, it suggested that there is a dense Archaeal community in the shoreline pore water of the lake. Sequences of bacterial sulfate reducers, nitrifiers iron oxidizers and iron reducers were identified as well. Analysis of white and green biofilms suggested that sulfide oxidation through chemolitotrophy and phototrophy is highly significant. Hyperspectral analysis showed a tight association between abundant green sulfur bacteria and cyanobacteria in the green biofilms. Together, our findings show that the Dead Sea floor harbors diverse microbial communities, part of which is not known from other hypersaline environments. Analysis of the waters chemistry shows evidence of microbial activity along the path and suggests that the springs supply nitrogen, phosphorus and organic matter to the microbial communities in the Dead Sea. The underwater springs are a newly recognized water source for the Dead Sea. Their input of microorganisms and nutrients needs to be considered in the assessment of possible impact of dilution events of the lake surface waters, such as those that will occur in the future due to the intended establishment of the Red Sea?Dead Sea water conduit. PMID:22679498

Ionescu, Danny; Siebert, Christian; Polerecky, Lubos; Munwes, Yaniv Y.; Lott, Christian; Hausler, Stefan; Bizic-Ionescu, Mina; Quast, Christian; Peplies, Jorg; Glockner, Frank Oliver; Ramette, Alban; Rodiger, Tino; Dittmar, Thorsten; Oren, Aharon; Geyer, Stefan; Stark, Hans-Joachim; Sauter, Martin; Licha, Tobias; Laronne, Jonathan B.; de Beer, Dirk

2012-01-01

79

Chemical and Isotopic Variability of Spring Discharge: Implications for Groundwater Flow Pathways and Residence Times in the R-aquifer, Grand Canyon, Arizona  

NASA Astrophysics Data System (ADS)

Roaring Springs is the sole supply of potable water to the 4.4 million annual visitors and employees at Grand Canyon National Park. Roaring Springs and other karst-fed springs on the Grand Canyon's North Rim also provide baseflow to the Colorado River and support riparian habitats along tributary canyons. Climate change and proposed changes in land management north of Grand Canyon National Park may dramatically affect the quantity and quality of water discharging from the North Rim springs. These springs are sourced from water recharged on the Kaibab Plateau that travels a minimum of 900 vertical meters through conduits, faults, and fractures before discharging from the R-aquifer, a deep unconfined karstic carbonate aquifer. Stable isotope data, specifically 18O and 2H, from spring and precipitation samples were used to indicate the seasonality and location of recharge. Roaring Springs shows a distinct seasonal variation in isotopic signature with summer values more depleted in 2H and more enriched in 18O than winter values. Major cation/anion analyses along with other geochemical signatures will be assessed to interpret groundwater flowpaths and residence times, and to put North Rim springs in a regional context with other Grand Canyon springs. Specifically, evidence for seasonal transition between saturated and unsaturated conduit flow may be accentuated by variations in isotopic and chemical signatures in North Rim spring discharge. These results will represent the most comprehensive hydrologic dataset for North Rim springs and will be used to develop a conceptual groundwater flow model with the United States Geological Survey's new Conduit Flow Process package. Previous conceptual groundwater flow models for the area have yet to take into account the possibility of turbulent flow through karst conduits.

Brown, C. R.; Springer, A. E.; Hogan, J.; Rice, S. E.

2008-12-01

80

Chemical and isotopic characteristics of geothermal fluids from Sulphur Springs, Saint Lucia  

NASA Astrophysics Data System (ADS)

Sulphur Springs is a vigorous, geothermal field associated with the active Soufrire Volcanic Centre in southern Saint Lucia, Lesser Antilles island arc. The 'Sulphur Springs Park' is an important tourist attraction (touted as the 'world's only drive-through volcano') with some of the hot pools being developed into recreational pools. Some 200,000 people visit the park each year. Since 2001, the hydrothermal fluids of Sulphur Springs have been sampled as part of an integrated volcanic monitoring programme for the island. Gas and water samples were analysed to characterise the geochemistry of the hydrothermal system, and to assess the equilibrium state and subsurface temperatures of the reservoir. This has also enabled us, for the first time, to establish baseline data for future geochemical monitoring. The gases are of typical arc-type composition, with N2 excess and low He and Ar content. The dry gas composition is dominated by CO2 (ranging from 601-993 mmol/mol), with deeper magmatic sourced H2S-rich vapour undergoing boiling and redox changes in the geothermal reservoir to emerge with a hydrothermal signature in the fumarolic gases. Fluid contributions from magmatic degassing are also evident, mainly from the moderate to high contents of HCl and deeply-sourced H2S gas, respectively. Sulphur Springs hydrothermal waters have acid-sulphate type compositions (SO4 = 78-4008 mg/L; pH = 3-7), and are of primarily meteoric origin which have been affected by evaporation processes based on the enrichment in both ?18O and ?D (?18O = - 1 to 15 and ?D = - 9 to 14 respectively) in relation to the global meteoric water line (GMWL). These waters are steam-heated water typically formed by absorption of H2S-rich gases in the near surface oxygenated groundwaters. Reservoir temperatures calculated from the evaluation of gas equilibria in the CO2-CH4-H2 system reveal higher temperatures (190 to 300 C) than those derived from quartz geothermometry (95 to 169 C), which appeared to be affected by dilution with meteoric waters. Generally, no significant variations in fluid geochemistry of the hydrothermal system were observed between 2001 and 2006, and we propose that there were no changes in the state of volcanic activity during this period.

Joseph, Erouscilla P.; Fournier, Nicolas; Lindsay, Jan M.; Robertson, Richard; Beckles, Denise M.

2013-03-01

81

Macroalgae in a spring stream in Shanxi Province: composition and relation to physical and chemical variables  

Microsoft Academic Search

Fourteen stream segments were investigated throughout the Xinan Spring in Shanxi Province, China in 2004. The variation ranges\\u000a in stream size, current velocity, discharge, dissolved oxygen, and specific conductance were large. Twenty-two macroalgae\\u000a species were found in the stream. Major divisions in terms of species numbers were Chlorophyta (59.1%), Cyanophyta (22.8%),\\u000a Xanthophyta (9.1%), Rhodophyta (4.5%) and Charophyta (4.5%). The most

Bianfang Hu; Shulian Xie

2007-01-01

82

BE.104J Chemicals in the Environment: Toxicology and Public Health, Spring 2005  

E-print Network

This course addresses the challenges of defining a relationship between exposure to environmental chemicals and human disease. Course topics include epidemiological approaches to understanding disease causation; biostatistical ...

Sherley, James L.

83

WELDON SPRING EPA Region 7 10/13/2011 QUARRY/PLANT/ PITTS  

E-print Network

, removing PCB transformers, constructing stormwater diversion dikes to reduce off-site migration the treatment and discharge of stormwater and impounded surface water. Quarry Bulk Waste: In 1990, the DOE chose to excavate and to temporarily store quarry bulk wastes on site. Wastes were transported over a haul road

84

Chemical indicators of subsurface temperature applied to hot spring waters of Yellowstone National Park, Wyoming, U.S.A.  

USGS Publications Warehouse

Under favorable conditions the chemistry of hot springs may give reliable indications of subsurface temperatures and circulation patterns. These chemical indicators can be classified by the type of process involved: {A table is presented}. All these indicators have certain limitations. The silica geothermometer gives results independent of the local mineral suite and gas partial pressures, but may be affected by dilution. Alkali ratios are strongly affected by the local mineral suite and the formation of complex ions. Carbonate-chloride ratios are strongly affected by subsurface PCO2. The relative concentration of volatiles can be very misleading in high-pressure liquid systems. In Yellowstone National Park most thermal waters issue from hot, shallow aquifers with pressures in excess of hydrostatic by 2 to 6 bars and with large flows (the flow of hot spring water from the Park is greater than 4000 liters per second). These conditions should be ideal for the use of chemical indicators to estimate aquifer temperatures. In five drill holes aquifer temperatures were within 2??C of that predicted from the silica content of nearby hot springs; the temperature level off at a lower value than predicted in only one hole, and in four other holes drilling was terminated before the predicted aquifer temperature was reached. The temperature-Na/K ratio relationship does not follow any published experimental or empirical curve for water-feldspar or water-clay reactions. We suspect that ion exchange reactions involving zeolites in the Yellowstone rocks result in higher Na/K ratios at given temperatures than result from feldspar or clay reactions. Comparison of SiO2 and Cl/(HCO3 + CO3) suggest that because of higher subsurface PCO2 in Upper Geyser Basin a given Cl/(HCO3 + CO3) ratio there means a higher temperature than in Lower Geyser Basin. No correlation was found in Yellowstone Park between the subsurface regions of highest temperature and the relative concentration of volatile components such as boron and ammonia. ?? 1971.

Fournier, R. O.; Truesdell, A. H.

1970-01-01

85

Isotopic, chemical and dissolved gas constraints on spring water from Popocatepetl volcano (Mexico): evidence of gaswater interaction between magmatic component and shallow fluids  

Microsoft Academic Search

Geochemical research was carried out on cold and hot springs at Popocatepetl (Popo) volcano (Mexico) in 1999 to identify a possible relationship with magmatic activity. The chemical and isotopic composition of the fluids is compatible with strong gaswater interaction between deep and shallow fluids. In fact, the isotopic composition of He and dissolved carbon species is consistent with a magmatic

S. Inguaggiato; A. L. Martin-Del Pozzo; A. Aguayo; G. Capasso; R. Favara

2005-01-01

86

?EHREBEKE, KUYU VE KAYNAK SULARININ OZONLANMASI ?LE FZKSEL, KMYASAL VE MKROBYOLOJK ZELLKLERNNNCELENMES ? OZONIZING AND EXAMINATION OF CHEMICAL AND MICROBIOLOGICAL FEATURES OF CITY WATER SUPPLY, WELL AND SPRING WATER  

Microsoft Academic Search

This study aims the examination of changing parameters of chemical, physical and microbiological features of city water supply, well and spring water of the province of Corum after ozonizing. Ozone is a gas having highly oxidizing power and a well disinfectant. Moreover, since ozone is acquired through the breakdown of oxygen in the air, it is converted into oxygen which

Grkem KARTAL; Kutay PERVEL; Nihan KAYA; Erdal KARADURMU

87

Macroalgae in a spring stream in Shanxi Province: composition and relation to physical and chemical variables  

NASA Astrophysics Data System (ADS)

Fourteen stream segments were investigated throughout the Xinan Spring in Shanxi Province, China in 2004. The variation ranges in stream size, current velocity, discharge, dissolved oxygen, and specific conductance were large. Twenty-two macroalgae species were found in the stream. Major divisions in terms of species numbers were Chlorophyta (59.1%), Cyanophyta (22.8%), Xanthophyta (9.1%), Rhodophyta (4.5%) and Charophyta (4.5%). The most widespread species, Cladophora rivularis (50.0%), also Oedogonium sp. (42.9%) and Spirogyra sp. (42.9%) were well represented throughout the stream, whereas another 10 species were found in only one sampling site. Total percentage cover varied from <1% to 90%. Red algae Batrachospermum acuatum and the charophytes Chara vulgaris have the highest percentage cover. Among the parameters analyzed, the stream width, specific conductance and dissolved oxygen were the ones that more closely related to the species number and percentage cover of macroalgal communities. The species number of each site was negatively correlated with dissolved oxygen content. The total percentage cover of the macroalgae was negatively correlated with the stream width and the specific conductance.

Hu, Bianfang; Xie, Shulian

2007-07-01

88

Using chemical and microbiological indicators to track the impacts from the land application of treated municipal wastewater and other sources on groundwater quality in a karstic springs basin  

USGS Publications Warehouse

Multiple chemical constituents (nutrients; N, O, H, C stable isotopes; 64 organic wastewater compounds, 16 pharmaceutical compounds) and microbiological indicators were used to assess the impact on groundwater quality from the land application of approximately 9.5 million liters per day of treated municipal sewage effluent to a sprayfield in the 960-km2 Ichetucknee Springs basin, northern Florida. Enriched stable isotope signatures (?? 18O and ??2H) were found in water from the effluent reservoir and a sprayfield monitoring well (MW-7) due to evaporation; however, groundwater samples downgradient from the sprayfield have ??18O and ??2H concentrations that represented recharge of meteoric water. Boron and chloride concentrations also were elevated in water from the sprayfield effluent reservoir and MW-7, but concentrations in groundwater decreased substantially with distance downgradient to background levels in the springs (about 12 km) and indicated at least a tenfold dilution factor. Nitrate-nitrogen isotope (??15N-NO3) values above 10 ??? in most water samples were indicative of organic nitrogen sources except Blue Hole Spring (??15N-NO3 = 4.6-4.9 ???), which indicated an inorganic source of nitrogen (fertilizers). The detection of low concentrations the insect repellent N,N-diethyl-metatoluamide (DEET), and other organic compounds associated with domestic wastewater in Devil's Eye Spring indicated that leakage from a nearby septic tank drainfield likely has occurred. Elevated levels of fecal coliforms and enterococci were found in Blue Hole Spring during higher flow conditions, which likely resulted from hydraulic connections to upgradient sinkholes and are consistent with previoius dye-trace studies. Enteroviruses were not detected in the sprayfield effluent reservoir, but were found in low concentrations in water samples from a downgradient well and Blue Hole Spring during high-flow conditions indicating a human wastewater source. The Upper Floridan aquifer in the Ichetucknee Springs basin is highly vulnerable to contamination from multiple anthropogenic sources throughout the springs basin. ?? 2007 Springer-Verlag.

Katz, B.G.; Griffin, Dale W.

2008-01-01

89

Using chemical and microbiological indicators to track the impacts from the land application of treated municipal wastewater and other sources on groundwater quality in a karstic springs basin  

NASA Astrophysics Data System (ADS)

Multiple chemical constituents (nutrients; N, O, H, C stable isotopes; 64 organic wastewater compounds, 16 pharmaceutical compounds) and microbiological indicators were used to assess the impact on groundwater quality from the land application of approximately 9.5 million liters per day of treated municipal sewage effluent to a sprayfield in the 960-km2 Ichetucknee Springs basin, northern Florida. Enriched stable isotope signatures (?18O and ?2H) were found in water from the effluent reservoir and a sprayfield monitoring well (MW-7) due to evaporation; however, groundwater samples downgradient from the sprayfield have ?18O and ?2H concentrations that represented recharge of meteoric water. Boron and chloride concentrations also were elevated in water from the sprayfield effluent reservoir and MW-7, but concentrations in groundwater decreased substantially with distance downgradient to background levels in the springs (about 12 km) and indicated at least a tenfold dilution factor. Nitrate-nitrogen isotope (?15N NO3) values above 10 in most water samples were indicative of organic nitrogen sources except Blue Hole Spring (?15N NO3 = 4.6 4.9 ), which indicated an inorganic source of nitrogen (fertilizers). The detection of low concentrations the insect repellent N, N-diethyl-metatoluamide (DEET), and other organic compounds associated with domestic wastewater in Devils Eye Spring indicated that leakage from a nearby septic tank drainfield likely has occurred. Elevated levels of fecal coliforms and enterococci were found in Blue Hole Spring during higher flow conditions, which likely resulted from hydraulic connections to upgradient sinkholes and are consistent with previoius dye-trace studies. Enteroviruses were not detected in the sprayfield effluent reservoir, but were found in low concentrations in water samples from a downgradient well and Blue Hole Spring during high-flow conditions indicating a human wastewater source. The Upper Floridan aquifer in the Ichetucknee Springs basin is highly vulnerable to contamination from multiple anthropogenic sources throughout the springs basin.

Katz, Brian G.; Griffin, Dale W.

2008-08-01

90

Microwave measurements of arctic chlorine monoxide and computed chemical ozone loss in spring 2000  

NASA Astrophysics Data System (ADS)

The University of Bremen (Germany) operates a microwave radiometer for the detection of stratospheric chlorine monoxide at 204 GHz, ozone at 142 GHz and water vapor at 22 GHz. The radiometer for atmospheric measurements (RAM) is located at the primary Arctic station of the Network for the Detection of Stratospheric Change - NDSC - in Ny-lesund, Spitsbergen at 79 North and 12 East. We observed a maximum chlorine monoxide (ClO) volume mixing ratio (VMR) of 1.2 0.2 ppb in early March 2000 inside the polar vortex. The observed ClO decreased almost linearly to background values until late March. The vortex averaged chemical ozone loss derived from our observations accumulated to 45% at the 475 K isentropic level over the complete vortex existence period from December 1999 to March 2000.

Klein, U.; Lindner, K.; Bagdohn, S.; Wohltmann, I.; Knzi, K. F.

91

Changes of chemical composition and dough rheology in two fractions of sieve-classified Polish spring wheat flour.  

PubMed

The study of chemical composition and dough rheology changes in sieve-classified two fractions (up to 60 and 60-240 microm particles) of wheat flour was the subject of this study. The straight grade flours were obtained by the milling of three Polish varieties of spring wheat, differing in particle size index (PSI) values. The flours were separated with the use of an SZ-1 laboratory sifter. The yield of fine fraction was in the range 50.0-55.7%. The obtained fractions were assayed for the content and composition of free lipids, gluten proteins, damaged starch, ash, water absorption and amylograph viscosity. Dough rheology (extrusion in OTMS cell, alveograph and farinograph tests) and baking trials were also performed. The content of free lipids, including the non-polar and phospholipids was lower and the content of glycolipids was higher in fine flours. Those fractions were more rich in linoleic acid but the lower content of oleic and linolenic acids resulted in a higher oxidizability index of free lipids. Fine flours contained less ash and significantly more damaged starch. At the same time, they were characterized by a higher content of wet gluten, water absorption, amylograph viscosity and better dough parameters. This was reflected in the bread volume, which was higher by 6.3-10.7%. The influence of the changes in composition and the content of free lipids upon the rheology of the dough after the 90 days flour storage has not been defined unambiguously and requires further research. PMID:15146967

Konopka, Iwona; Drzewiecki, Jerzy

2004-04-01

92

Chemical composition of the snowpack during the OASIS spring campaign 2009 at Barrow, Alaska  

NASA Astrophysics Data System (ADS)

The chemical composition of the seasonal snowpack was determined close to Barrow, an Arctic coastal location in northern Alaska. One hundred and twelve samples of different snow types including fresh snow, surface hoar, diamond dust, blowing snow, rounded snow grains, and depth hoar were collected and analyzed for major sea salt components, bromide, and nitrate. Sodium, chloride, sulfate, and potassium are mainly introduced into the snowpack by the deposition of sea salt, while magnesium and calcium result from a combination of sea salt and dust. Sulfate was strongly depleted in most samples compared to other sea salt components. This is attributed to the precipitation of mirabilite in newly formed sea ice and frost flowers that leads to an efficient fractionation of sulfate. Uptake of volatile but soluble species from the gas phase also contributed to the observed chloride, sulfate, and nitrate in the snow. However, for chloride and sulfate the input from the marine sources was overwhelming and the uptake from the gas phase was only visible in the samples with low concentrations like fresh snow, diamond dust, and surface hoar. Nitrate concentrations in the snowpack were less variable and for aged snow nitrate was related to the specific surface area of the snow indicating the adsorption of nitric acid can be an important nitrate source in the aged snow. Bromide was also introduced into the snowpack from marine sources, but due to its high reactivity it was partly transferred back to the atmosphere in the form of reactive species. The result of these processes was evident in bromide concentrations, which were both enriched and depleted at the snowpack surface while deeper layers were mostly depleted. Blowing snow also exhibited a depleted bromide composition. For all compounds except nitrate, many depth hoar samples exhibited the greatest concentrations, probably as a result of higher input earlier in the season as well as increases due to the sublimation of water during the metamorphism of the snow.

Jacobi, H. W.; Voisin, D.; Jaffrezo, J. L.; Cozic, J.; Douglas, T. A.

2012-07-01

93

Results of weekly chemical and isotopic monitoring of selected springs in Norris Geyser Basin, Yellowstone National Park during June-September, 1995  

USGS Publications Warehouse

Each year at Norris Geyser Basin, generally in August or September, a widespread hydrothermal 'disturbance' occurs that is characterized by simultaneous changes in the discharge characteristics of many springs, particularly in the Back Basin. During the summer season of 1995, water samples from eight widely distributed hot springs and geysers at Norris were collected each week and analyzed to determine whether chemical and isotopic changes also occurred in the thermal waters at the time of the disturbance. In addition, Beryl Spring in Gibbon Canyon, 5.8 km southwest of Norris Geyser Basin, was included in the monitoring program. Waters discharged by four of the monitored hot springs and geysers appear to issue from relatively deep reservoirs where temperatures are at least 270 C and possibly higher than 300 C. At the time of, and for several days after, the onset of the 1995 disturbance, the normally neutral-chloride waters discharged by these four features all picked up an acid-sulfate component and became isotopically heavier. The acid-sulfate component appears to be similar in composition to some waters discharged in 100 Spring Plain that issue from subsurface regions where temperatures are in the range 170-210 C. However, the two monitored springs that discharge acid-chloride-sulfate waters in the 100 Spring Plain region did not show any significant chemical or isotopic response to the annual disturbance. Beryl Spring, and two neutral-chloride hot springs at Norris that appear to draw their water from reservoirs where temperatures are 250 C or less, also did not show any significant chemical or isotopic response to the annual disturbance. After the start of the annual disturbance, chloride concentrations in water sampled from Double Bulger Geyser in the Back Basin increased from about 800 ppm to about 1500 ppm, nearly twice as high as any previously reported chloride concentration in a thermal water at Yellowstone. The isotopic composition of that water precludes an origin of the high chloride by evaporation at atmospheric pressure. One way to account for the unique chemical and isotopic composition of this highly concentrated wateris by recirculation of water that had gone through one cycle of adiabatic cooling during upflow (decompressional boiling) back down into the hydrothermal system, where it is reheated to greater than 220 C. This previously boiled water then undergoes additional cycles of decompressional boiling during subsequent upflow. Another way the unique chemical and isotopic composition of Double Bulger water might evolve is by excess boiling in the formation that results from a decrease in fluid pressure within the channels of upflow. The annual disturbance at Norris Geyser Basin generally appears to be triggered by a cyclic up and down movement of the boilingpoint curve within the hydrothermal system in response to changes in the potentiometric surface of the cold water that is adjacent to, and interconnected with, that hydrothermal system. Annual disturbance phenomena that are easily recognized at Norris Geyser Basin may not be easily recognized elsewhere in Yellowstone National Park because (1) the neutral-chloride waters at Norris ascend directly from higher-temperature and higherpressure reservoirs (270 to >300 C at Norris compared to 180-215C at Upper and Lower Geyser Basins) that are capable of producing massive amounts of high-pressure steam, and (2) the clay that makes hot spring and geyser waters become turbid at Norris, heralding the start of the disturbance, comes from acid altered rocks that are widely distributed at intermediate depths at Norris, and that are rare in other geyser basins.

Fournier, R.O.; Weltman, U.; Counce, D.; White, L.D.; Janik, C.J.

2002-01-01

94

Silver Springs Spring B Photo  

E-print Network

Highlights Silver Springs Spring B Photo Graduate School Workshop Notes from the Office TheELIWeekly Silver Springs Nature's Theme Park. On Saturday, April 7th we will be going to Silver Springs, which

Pilyugin, Sergei S.

95

Kamchatka's thermal hot springs  

NSDL National Science Digital Library

The Kamchatka Peninsula is featured in this website including information on geography, climate, fauna, flora, volcanoes, thermal springs, Valley of Geysers, native people, and options for travel in Kamchatka. This specific page highlights a selection of Kamchatka's hot springs, presenting basic information on temperature ranges, chemical and physical characteristics, surrounding vegetation, and general location.

Kamchatka, Vision O.

96

Chemical compositions and radiative properties of dust and anthropogenic air masses study in Taipei Basin, Taiwan, during spring of 2004  

Microsoft Academic Search

Asia is one of the major sources of not only mineral dust but also anthropogenic aerosols. Continental air masses associated with the East Asian winter monsoon always contain high contents of mineral dust and anthropogenic species and transported southeastward to Taiwan, which have significant influences on global atmospheric radiation transfer directly by scattering and absorbing solar radiation in each spring.

Shih-Yu Chang; Guor-Cheng Fang; Charles C.-K. Chou; Wei-Nai Chen

2006-01-01

97

Spring carbonate chemistry dynamics of surface waters in the northern East China Sea: Water mixing, biological uptake of CO2, and chemical buffering capacity  

NASA Astrophysics Data System (ADS)

investigated sea surface total alkalinity (TAlk), dissolved inorganic carbon (DIC), dissolved oxygen (DO), and satellite-derived chlorophyll-a in the connection between the Yellow Sea and the East China Sea (ECS) during April to early May 2007. In spring, Changjiang dilution water (CDW), ECS offshore water, and together with Yellow Sea water (YSW) occupied the northern ECS. Using 16 day composite satellite-derived chlorophyll-a images, several algal blooms were identified in the CDW and ECS offshore water. Correspondingly, biological DIC drawdown of 73 20 ?mol kg-1, oversaturated DO of 10-110 ?mol O2 kg-1, and low fugacity of CO2 of 181-304 ?atm were revealed in these two waters. YSW also showed CO2 uptake in spring, due to the very low temperature. However, its intrusion virtually counteracted CO2 uptake in the northern ECS. In the CDW and the ECS offshore water, Revelle factor was 9.3-11.7 and 8.9-10.6, respectively, while relatively high Revelle factor values of 11.4-13.0 were revealed in YSW. In the ECS offshore water, the observed relationship between DIC drawdown and oversaturated DO departed from the Redfield ratio, indicating an effect of chemical buffering capacity on the carbonate system during air-sea reequilibration. Given the fact that the chemical buffering capacity slows down the air-sea reequilibration of CO2, the early spring DIC drawdown may have durative effects on the sea surface carbonate system until early summer. Although our study is subject to limited temporal and spatial coverage of sampling, these insights are fundamental to understanding sea surface carbonate chemistry dynamics in this important ocean margin.

Zhai, Wei-Dong; Chen, Jian-Fang; Jin, Hai-Yan; Li, Hong-Liang; Liu, Jin-Wen; He, Xian-Qiang; Bai, Yan

2014-09-01

98

Spring Constants  

NSDL National Science Digital Library

This inquiry activity should be completed before students have learned about spring constants. It should be pointed out to students that if a rubber band or spring is stretched too much, the spring constant is not constant. Graphs will vary based on the s

Horton, Michael

2009-05-30

99

Hydrology and water-quality at the Weldon Spring radioactive waste-disposal sites, St Charles County, Missouri  

USGS Publications Warehouse

Water samples from five monitoring wells adjacent to raffinate pits storing low-level radioactive waste contained concentrations of nitrate as nitrogen ranging from 53 to 990 milligrams per liter. Most samples also had maximum concentrations of calcium (900 milligrams per liter), sodium (340 milligrams per liter), sulfate (320 milligrams per liter), lithium (1,700 micrograms), strontium (1,900 micrograms per liter), and uranium (86 micrograms per liter). The raffinate pits also had large concentrations of these constituents. A water balance made on the raffinate pits indicated a 0.04 to 0.08 inch per day decrease in the water level that cannot be attributed to meterological conditions. These data and seismically-detected areas of saturated overburden beneath one raffinate pit and possibly adjacent to three other pits indicate leakage from the pits. (USGS)

Kleeschulte, M. J.; Emmett, L. F.

1987-01-01

100

Spring Away!  

NSDL National Science Digital Library

This lab demonstrates Hooke's Law with the use of springs and masses. Students attempt to determine the proportionality constant, or k-value, for a spring. They do this by calculating the change in length of the spring as different masses are added to it. The concept of a spring's elastic limit is also introduced, and the students test to makes sure the spring's elastic limit has not been reached during their lab tests. After compiling their data, they attempt to find an average value of the spring's k-value by measuring the slopes between each of their data points. Then they apply what they've learned about springs to how engineers might use that knowledge in the design of a toy that enables kids to jump 2-3 feet in the air.

VU Bioengineering RET Program, School of Engineering,

101

Investigation of Organic Chemicals Potentially Responsible for Mortality and Intersex in Fish of the North Fork of the Shenandoah River, Virginia, during Spring of 2007  

USGS Publications Warehouse

Declining fish health, fish exhibiting external lesions, incidences of intersex, and death, have been observed recently within the Potomac River basin. The basin receives surface runoff and direct inputs from agricultural, industrial, and other human activities. Two locations on the North Fork of the Shenandoah River were selected for study in an attempt to identify chemicals that may have contributed to the declining fish health. Two passive sampling devices, semipermeable membrane devices (SPMDs) and polar organic chemical integrative samplers (POCIS), were deployed during consecutive two-month periods during the spring and early summer of 2007 to measure select organic contaminants to which fish may have been exposed. This study determined that concentrations of persistent hydrophobic contaminants, such as polycyclic aromatic hydrocarbons (< picograms per liter), legacy pesticides (<10 picograms per liter), and polychlorinated biphenyls (<280 picograms per liter) were low and indicative of a largely agricultural area. Atrazine and simazine were the most commonly detected pesticides. Atrazine concentrations ranged from 68 to 170 nanograms per liter for the March to April study period and 320 to 650 nanograms per liter for the April to June study period. Few chemicals characteristic of wastewater treatment plant effluent or septic tank discharges were identified. In contrast, para-cresol, N,N-diethyltoluamide, and caffeine commonly were detected. Prescription pharmaceuticals including carbamazepine, venlafaxine, and 17a-ethynylestradiol were at low concentrations. Extracts from the passive samplers also were screened for the presence of estrogenic chemicals using the yeast estrogen screen. An estrogenic response was observed in POCIS samples from both sites, whereas SPMD samples exhibited little to no estrogenicity. This indicates that the chemicals producing the estrogenic response have a greater water solubility and are, therefore, less likely to bioaccumulate in fatty tissues of organisms.

Alvarez, David A.; Cranor, Walter L.; Perkins, Stephanie D.; Schroeder, Vickie L.; Werner, Stephen; Furlong, Edward T.; Holmes, John

2008-01-01

102

Lagrangian sampling of wastewater treatment plant effluent in Boulder Creek, Colorado, and Fourmile Creek, Iowa, during the summer of 2003 and spring of 2005--Hydrological and chemical data  

USGS Publications Warehouse

This report presents methods and data for a Lagrangian sampling investigation into chemical loading and in-stream attenuation of inorganic and organic contaminants in two wastewater treatment-plant effluent-dominated streams: Boulder Creek, Colorado, and Fourmile Creek, Iowa. Water-quality sampling was timed to coincide with low-flow conditions when dilution of the wastewater treatment-plant effluent by stream water was at a minimum. Sample-collection times corresponded to estimated travel times (based on tracer tests) to allow the same "parcel" of water to reach downstream sampling locations. The water-quality data are linked directly to stream discharge using flow- and depth-integrated composite sampling protocols. A range of chemical analyses was made for nutrients, carbon, major elements, trace elements, biological components, acidic and neutral organic wastewater compounds, antibiotic compounds, pharmaceutical compounds, steroid and steroidal-hormone compounds, and pesticide compounds. Physical measurements were made for field conditions, stream discharge, and time-of-travel studies. Two Lagrangian water samplings were conducted in each stream, one in the summer of 2003 and the other in the spring of 2005. Water samples were collected from five sites in Boulder Creek: upstream from the wastewater treatment plant, the treatment-plant effluent, and three downstream sites. Fourmile Creek had seven sampling sites: upstream from the wastewater treatment plant, the treatment-plant effluent, four downstream sites, and a tributary. At each site, stream discharge was measured, and equal width-integrated composite water samples were collected and split for subsequent chemical, physical, and biological analyses. During the summer of 2003 sampling, Boulder Creek downstream from the wastewater treatment plant consisted of 36 percent effluent, and Fourmile Creek downstream from the respective wastewater treatment plant was 81 percent effluent. During the spring of 2005 samplings, Boulder Creek downstream from the wastewater treatment plant was 40 percent effluent, and Fourmile Creek downstream from that wastewater treatment plant was 28 percent effluent. At each site, 300 individual constituents were determined to characterize the water. Most of the inorganic constituents were detected in all of the stream and treatment-plant effluent samples, whereas detection of synthetic organic compounds was more limited and contaminants typically occurred only in wastewater treatment-plant effluents and at downstream sites. Concentrations ranged from nanograms per liter to milligrams per liter.

Barber, Larry B.; Keefe, Steffanie H.; Kolpin, Dana W.; Schnoebelen, Douglas J.; Flynn, Jennifer L.; Brown, Gregory K.; Furlong, Edward T.; Glassmeyer, Susan T.; Gray, James L.; Meyer, Michael T.; Sandstrom, Mark W.; Taylor, Howard E.; Zaugg, Steven D.

2011-01-01

103

Using Tracers to follow Chemical Change in the Stratosphere: Examples from the Antarctic Spring and the Aftermath of the Mount Pinatubo Eruption  

NASA Astrophysics Data System (ADS)

We examine chemical change in the stratosphere, using measurements made by the Halogen Occultation Experiment (HALOE). Our work focusses on ozone and on three species of direct or indirect importance to the ozone budget: NO, NO_2, and HCl. HALOE observations of two long-lived species, HF and CH_4, are used as tracers to distinguish between change due to transport processes and change due to chemistry. In the first study, we investigate the response of NO + NO _2 (NOx) and ozone to the presence of large abundances of sulfate aerosol leftover in the stratosphere following the 1991 eruption of Mount Pinatubo. Here we show for the first time the sensitivity of ozone abundances to changes in abundances of NOx at 17 mb (about 27-28 km). As the Pinatubo aerosol cleared the atmosphere, the partitioning of the reactive nitrogen family NOy shifted toward more NOx, and ozone abundances declined. The trend in ozone is opposite to that observed at lower altitudes by ER-2 aircraft. In the second study, we examine the chemical aftermath of severe ozone depletion over Antarctic in spring. We show that when ozone levels drop to a certain threshold amount (about 1 ppb on the 480-K surface), the partitioning of the total inorganic chlorine family (Cly) shifts rapidly from reactive species to the reservoir species HCl. This sudden repartitioning shuts down further ozone loss and may have significance as filaments of vortex air peel off the vortex and mix with mid-latitude air.

Mickley, Loretta Joy

104

SPRING 2009 1 SPRING 2009  

E-print Network

recognized; a 1984 study Group on the Conditions of excellence in american higher education, for exampleSPRING 2009 1 SPRING 2009 Advances in Engineering Education The Impact of Structured Writing writing assignments focusing on team dynamics and logistical barriers to success. The third received both

Newell, James A.

105

Aquifer Susceptibility in Virginia: Data on Chemical and Isotopic Composition, Recharge Temperature, and Apparent Age of Water from Wells and Springs, 1998-2000  

USGS Publications Warehouse

The determination of aquifer susceptibility to contamination from near-surface sources by the use of ground-water dating techniques is a critical part of Virginia's Source Water Assessment Program. As part of the Virginia Aquifer Susceptibility study, water samples were collected between 1998 and 2000 from 145 wells and 6 springs in various hydrogeologic settings across the Commonwealth. Samples were analyzed to determine water chemistry?including nitrate (NO3), dissolved organic carbon (DOC), and radon-222 (222Rn), major dissolved and noble gases?nitrogen (N2), argon (Ar), oxygen (O2), carbon dioxide (CO2), methane (CH4), helium (He), and neon (Ne), environmental tracers?chlorofluorocarbons (CFCs), sulfur hexafluoride (SF6), tritium (3H), and tritium/helium-3 (3H/3He), carbon isotopes?carbon-14 (14C) and carbon-13 (d13C), and stable isotopes of oxygen (d18O) and hydrogen (d2H). The chemical and isotopic composition, recharge temperatures, and apparent ages of these water samples are presented in this report. Data collected between 1999 and 2000 from 18 wells in Virginia as part of two other studies by the U.S. Geological Survey also are presented. Most of the sites sampled serve as public water supplies and are included in the comprehensive Source Water Assessment Program for the Commonwealth.

Nelms, David L.; Harlow, George E., Jr.

2003-01-01

106

Quantum Spring  

NASA Astrophysics Data System (ADS)

In this paper, we will give a short review on quantum spring, which is a Casimir effect from the helix boundary condition that proposed in our earlier works. The Casimir force parallel to the axis of the helix behaves very much like the force on a spring that obeys the Hooke's law when the ratio r of the pitch to the circumference of the helix is small, but in this case, the force comes from a quantum effect, so we would like to call it quantum spring. On the other hand, the force perpendicular to the axis decreases monotonously with the increasing of the ratio r. Both forces are attractive and their behaviors are the same in two and three dimensions.

Feng, Chao-Jun; Li, Xin-Zhou

107

Spring Motion  

NSDL National Science Digital Library

Created by Lang Moore and David Smith for the Connected Curriculum Project, the purposes of this module are to investigate a mathematical model for spring motion and to study the effect of increased damping. This is one within a much larger set of learning modules hosted by Duke University.

Moore, Lang; Smith, David

2010-06-09

108

Spring Migration  

NSDL National Science Digital Library

The new Spring Migration site from eNature.com and the National Wildlife Federation provides an online reference for bird enthusiasts that shows the dates that each species can be expected to return to its summer habitat. Site visitors can choose from a large number of species found in their range. Maps show summer and winter habitat ranges and migration patterns. The site also provides photos, field guide information, and bird call audio for each species.

2002-01-01

109

PREDICTING SPRING LAKE CHEMISTRY FROM FALL SAMPLES  

EPA Science Inventory

The relationship between fall and spring lake chemistry was investigated for five chemical variables of 103 lakes in seven regions of the United States. Strong linear relationships were found between preceding springs and fall values for acid neutralizing capacity (ANC), pH, sulf...

110

Comparing pre- and post-chemical abrasion ages for Miocene Peach Springs Tuff zircon from ID-TIMS and SIMS analyses  

NASA Astrophysics Data System (ADS)

The Miocene Peach Spring Tuff (PST) is a voluminous (>600 km3), zoned ignimbrite (trachyte to high-SiO2 rhyolite) that is exposed widely in eastern California, western Arizona, and southernmost Nevada, which was erupted from the Silver Creek caldera in the southwestern Black Mountains, AZ. PST serves as a regionally widespread marker unit and its eruption age has been determined to 18.8 to 18.9 Ma by 40Ar/39Ar methods, when corrected for systematic bias and normalized to the U-Pb system (Renne et al., 2010,). We performed ion-microprobe (SIMS) U-Pb dating of zircon from individual pumice clasts from PST to evaluate the growth history of zircon in the PST magma system. Sectioned, polished zircon from conventional epoxy mounts allows dating of internal growth domains (e.g. cores, interiors, and near-rim), whereas mounting unpolished zircon in indium and analyzing unpolished crystal faces provides a means to selectively sample the final increments of crystal growth (Reid and Coath, 2000). Combining U-Pb ages of unpolished zircon rims with near-rim interior analyses on sectioned grains yields a mean age of ca. 18.3 Ma, whereas ages of cores of sectioned crystals yield a mean of ca. 18.9 Ma. Several zircons have rim and/or core ages that are several hundred thousand years older or younger than these means (up to 1 m.y. total spread), although the uncertainties for individual SIMS ages are 2 to 5% (2 sigma uncertainty). Therefore, the distribution of ages is challenging to resolve. A modest number of the older grains are plausibly recycled antecrysts, but we suspect that the youngest zircons may have experienced Pb-loss. Failure to account for the possibility of inheritance and Pb-loss may lead to erroneous interpretations about crystallization in the PST system. In order to evaluate and mitigate the effects of Pb-loss, we employed the chemical abrasion (CA) technique of Mattinson (2005), which effectively eliminates domains in zircon that have suffered Pb-loss, and removes micro-inclusions that typically contain common Pb. Thermal annealing followed by CA techniques were used for ID-TIMS dating of a sub-set of zircon crystals previously analyzed by SIMS. Prior to TIMS analyses, zircon crystals were imaged by scanning electron microscopy (SEM) to evaluate the effects of CA on crystal domains sampled by SIMS. SEM images reveal that whole portions of crystals were removed by the CA technique, and a heterogeneous pattern of etching that was not confined to specific compositional zones visible in cathodoluminescence. Most of the SIMS sputter pits that yield spurious ages, are associated with etching and/or preferential annealing by the combined annealing and CA technique, suggesting that the young ages relative to the 40Ar/39Ar age may be due to Pb loss. ID-TIMS yields a coherent U-Pb age population of 18.8 Ma, with several older and younger crystals that might reflect xenocrysts, Pb-loss, and/or younger crystallization. In order to maintain spatial resolution and further evaluate the effects of Pb-loss in PST zircon, the annealing and CA-technique will be applied to zircon prior to SIMS dating. References: Reid and Coath, 2000, Geology 28: 443 Renne et al., 2010, GCA 78: 5349

Lidzbarski, M. I.; Mundil, R.; Miller, J. S.; Vazquez, J. A.

2012-12-01

111

Fall Fall Fall FallSpring Spring Spring Spring Freshman Sophomore Junior Senior  

E-print Network

5.2011 Fall Fall Fall FallSpring Spring Spring Spring Freshman Sophomore Junior Senior Chemistry Total cr 17 - 18 16 17 15 14 - 17 13 - 16 Free Elective6 14 - 17 Free Elective9 B.S. with Chemistry Major CHEM Multi Disciplinary3 Team Princ. CHM 194 1 15 - 16 **Fall only class; ^ Spring only class

Kihara, Daisuke

112

^ Physical II Fall Fall Fall FallSpring Spring Spring Spring  

E-print Network

4.11 BC ^ Physical II CHM 37400 3 Fall Fall Fall FallSpring Spring Spring Spring Freshman Sophomore Thesis and a GPA of 3.4 or higher. **Fall only class; ^ Spring only class Gen Ed must be a sequence See Building CHM 194 or SCI 130 Technical Writing/ Presentation COM 21700 Free Elective3 Free Elective3 Free

Kihara, Daisuke

113

^Physical II Fall Fall Fall FallSpring Spring Spring Spring  

E-print Network

4.09 BC ^Physical II CHM 37400 3 Fall Fall Fall FallSpring Spring Spring Spring Freshman Sophomore Thesis and a GPA of 3.4 or higher. **Fall only class; ^ Spring only class Gen Ed must be a sequence (i 58100 1 Research* CHM 49900 3 ^Inorg. I CHM 24100 4 Team Building CHM 194 or SCI 130 Free Elective4

Kihara, Daisuke

114

AQUATIC WEED CONTROL SPRING 2013  

E-print Network

PLS 4613 AQUATIC WEED CONTROL SPRING 2013 CREDITS: 3.0 DESCRIPTION: Identification of Florida's aquatic weed problems and methods of chemical, biological, mechanical and physical weed control. Specific, insect biocontrol, grass carp, and current laws regulating aquatic weed control. INSTRUCTOR: William T

Watson, Craig A.

115

Radiochemical and Chemical Constituents in Water from Selected Wells and Springs from the Southern Boundary of the Idaho National Engineering and Environmental Laboratory to the Hagerman Area, Idaho, 1998  

SciTech Connect

The U.S. Geological Survey and the Idaho Department of Water Resources, in cooperation with the U.S. Department of Energy, sampled 18 sites as part of the fourth round of a long-term project to monitor water quality of the Snake River Plain aquifer from the southern boundary of the Idaho National Engineering and Environmental Laboratory to the Hagerman area. The samples were analyzed for selected radiochemical and chemical constituents. The samples were collected from 2 domestic wells, 12 irrigation wells, 2 stock wells, 1 spring, and 1 public supply well. Two quality-assurance samples also were collected and analyzed. None of the reported radiochemical or chemical constituent concentrations exceeded the established maximum contaminant levels for drinking water. Many of the radionuclide- and inorganic-constituent concentrations were greater than the respective reporting levels. Most of the organic-constituent concentrations were less than the reporting levels.

R. C. Bartholomay; B. V. Twining (USGS); L. J. Campbell (Idaho Department of Water Resources)

1999-06-01

116

Radiochemical and Chemical Constituents in Water from Selected Wells and Springs from the Southern Boundary of the Idaho National Engineering and Environmental Laboratory to the Hagerman Area, Idaho, 1997  

SciTech Connect

The U.S. Geological Survey and the Idaho Department of Water Resources, in cooperation with the U.S. Department of Energy, sampled 18 sites as part of the fourth round of a long-term project to monitor water quality of the Snake River Plain aquifer from the southern boundary of the Idaho National Engineering and Environmental Laboratory to the Hagerman area. Water samples were collected and analyzed for selected radiochemical and chemical constituents. The samples were collected from seven domestic wells, six irrigation wells, two springs, one dairy well, one observation well, and one stock well. Two quality-assurance samples also were collected and analyzed. None of the radiochemical or chemical constituents exceeded the established maximum contaminant levels for drinking water. Many of the radionuclide- and inorganic-constituent concentrations were greater than their respective reporting levels.

R. C. Bartholomay (USGS); L. M. Williams (USGS); L. J. Campbell (Idaho Department of Water Resources)

1998-12-01

117

Chemical composition of fumarolic gases and spring discharges from El Chichn volcano, Mexico: causes and implications of the changes detected over the period 19982000  

Microsoft Academic Search

Since the MarchApril 1982 eruption of El Chichn volcano, intense hydrothermal activity has characterised the 1-km-wide summit crater. This mainly consists of mud and boiling pools, fumaroles, which are mainly located in the northwestern bank of the crater lake. During the period 19982000, hot springs and fumaroles discharging inside the crater and from the southeastern outer flank (Agua Caliente) were

F. Tassi; O. Vaselli; B. Capaccioni; J. L. Macias; A. Nencetti; G. Montegrossi; G. Magro

2003-01-01

118

Variable stiffness torsion springs  

NASA Technical Reports Server (NTRS)

In a torsion spring the spring action is a result of the relationships between the torque applied in twisting the spring, the angle through which the torsion spring twists, and the modulus of elasticity of the spring material in shear. Torsion springs employed industrially have been strips, rods, or bars, generally termed shafts, capabable of being flexed by twisting their axes. They rely on the variations in shearing forces to furnish an internal restoring torque. In the torsion springs herein the restoring torque is external and therefore independent of the shearing modulus of elasticity of the torsion spring shaft. Also provided herein is a variable stiffness torsion spring. This torsion spring can be so adjusted as to have a given spring constant. Such variable stiffness torsion springs are extremely useful in gimballed payloads such as sensors, telescopes, and electronic devices on such platforms as a space shuttle or a space station.

Alhorn, Dean C. (inventor); Polites, Michael E. (inventor)

1995-01-01

119

Variable stiffness torsion springs  

NASA Technical Reports Server (NTRS)

In a torsion spring the spring action is a result of the relationships between the torque applied in twisting the spring, the angle through which the torsion spring twists, and the modulus of elasticity of the spring material in shear. Torsion springs employed industrially have been strips, rods, or bars, generally termed shafts, capabable of being flexed by twisting their axes. They rely on the variations in shearing forces to furnish an internal restoring torque. In the torsion springs herein the restoring torque is external and therefore independent of the shearing modulus of elasticity of the torsion spring shaft. Also provided herein is a variable stiffness torsion spring. This torsion spring can be so adjusted as to have a given spring constant. Such variable stiffness torsion springs are extremely useful in gimballed payloads such as sensors, telescopes, and electronic devices on such platforms as a space shuttle or a space station.

Alhorn, Dean C. (inventor); Polites, Michael E. (inventor)

1994-01-01

120

Chemical and isotopic compositions of thermal springs, fumaroles and bubbling gases at Tacan Volcano (MexicoGuatemala): implications for volcanic surveillance  

Microsoft Academic Search

This study presents baseline data for future geochemical monitoring of the active Tacan volcanohydrothermal system (MexicoGuatemala).\\u000a Seven groups of thermal springs, related to a NW\\/SE-oriented fault scarp cutting the summit area (4,100m a.s.l.), discharge\\u000a at the northwest foot of the volcano (1,5002,000m a.s.l.); another one on the southern ends of Tacan (La Calera). The near-neutral\\u000a (pH from 5.8 to 6.9)

Dmitri Rouwet; Salvatore Inguaggiato; Yuri Taran; Nicholas Varley

2009-01-01

121

Spring MVC Framework  

Microsoft Academic Search

\\u000a In this chapter, you will learn web-based application development using the Spring MVC framework. Spring MVC is one of the\\u000a most important modules of the Spring framework. It builds on the powerful Spring IoC container and makes extensive use of\\u000a the container features to simplify its configuration. Most Spring MVC configurations are written in bean configuration files.

Gary Mak

122

MSU Departmental Assessment Update Spring 2007  

E-print Network

MSU Departmental Assessment Update Spring 2007 Department: Chemical and Biological Engineering/Majors/Options Offered by Department BS in Chemical Engineering #12; 1 Assessment Update 2006 CHBE assessment must wait until CHBE 407 has been taught (Fall 2007). · CHBE 322 (4 cr) [Fluid Mechanics and Heat

Dyer, Bill

123

Availability and chemical quality of ground water in the Crystal River and Cattle Creek Drainage Basins near Glenwood Springs, west-central Colorado  

USGS Publications Warehouse

Parts of the Crystal River and cattle Creek drainage basins near Glenwood Springs, Colo., have undergone rapid population growth in recent years. This growth has resulted in an increased demand for information for additional domestic, industrial, and municipal water supplies. A knowledge of the occurrence of ground water will permit a more efficient allocation of the resource. Aquifers in the two drainage basins include: alluvium, basalts, the Mesa Verde Formation, Mancos Shale, Dakota Sandstone, Morrison Formation, Entrada Sandstone, Maroon Formation, Eagle Valley Evaporite, and undifferentiated formations. Except for aquifers in the alluvium, and basalt, well yields are generally low and are less than 25 gallons per minute. Well yields form aquifers in the alluvium and basalt can be as much as several hundred gallons per minute. Water quality is dependent of rock type. Calcium bicarbonate is the predominant type of water in the study area. However, calcium sulfate type water may be found in aquifers in the Eagle Valley Evaporite and in the alluvium where the alluvial material has been derived from the Eagle Valley Evaporite. Concentrations of selenium in excess of U.S. Public Health Service standards for drinking water can be found locally in aquifers in the Eagle Valley Evaporite. (Woodard-USGS)

Brogden, Robert E.; Giles, T. F.

1976-01-01

124

Spring 2014 SWS6932 SPRING 2014  

E-print Network

Spring 2014 SWS6932 SPRING 2014 SWS6932, Journal Colloquium TOPIC: Microbial Communities standpoint. 3) What do we know (if anything!) about the effects on microbial community composition? 4) What can we say about the potential role of microbial communities as mitigators or agents? What feedback

Ma, Lena

125

Spring 2012 YOGA & PILATES PROGRAM Spring 2012  

E-print Network

Spring 2012 YOGA & PILATES PROGRAM Spring 2012 YOGA & PILATES PROGRAM Jeffrey Duval Jeffrey Duval in two knee surgeries. As part of the rehabilitation process Colleen first came to Pilates. Not only did the Pilates program get her back on her feet, she resumed a full dance career for the following 10 years

Grishok, Alla

126

Rachel Carson's Silent Spring  

NSDL National Science Digital Library

In this video segment adapted from American Experience: Rachel Carson's Silent Spring, learn how the lethal impact of the pesticide DDT on wildlife inspired biologist Rachel Carson to write Silent Spring.

Foundation, Wgbh E.

2011-07-01

127

Joshua Smith Spring 2006  

E-print Network

Stormwater Utilities in Georgia Joshua Smith Spring 2006 #12;The UGA Land Use Clinic provides in Georgia Author: Joshua Smith Editor: Jamie Baker Roskie University of Georgia Land Use Clinic Spring 2006....................................................................................................10 #12;#12;1Stormwater Utilities in Georgia Stormwater Utilities in Georgia Joshua Smith Spring 2006

Rosemond, Amy Daum

128

Public involvement case study -- The public, the media, and chemical weapons in the front yard: Spring Valley, Washington, D.C. (1993)  

SciTech Connect

On January 5, 1993, a worker digging a utility trench in an upscale Washington neighborhood uncovered some World War I chemical munitions. Once emergency officials heard the words ``poison gas`` and ``munitions,`` District of Columbia emergency equipment and workers streamed into the neighborhood. Reporters descended on the site. Soldiers in chemical suits arrived. Residents were evacuated. With the onslaught of flashing police lights, uniformed soldiers, and omnipresent news cameras, local homeowners began to panic. This one site had all the attributes of a great news story: disaster, panic, conflict, danger, and big government. But you didn`t see this story played out nightly on CNN. In fact, it wasn`t picked up as a major, controversial story. That`s because of the excellent work by those removing the munitions and a strong public involvement program. These turned a potential public relations disaster and media nightmare into a success story. Public involvement changed angry, frightened citizens into firm believers in the project. It turned cynical media into informed news outlets. And it made the munitions removal effort easier. The focus of this paper, however, is on the public relations battle.

Crawford, K. [Army Corps of Engineers, Huntsville, AL (United States)

1994-12-31

129

[Chemical characteristics in airborne particulate matter (PM10) during a high pollution spring dust storm episode in Beijing, Tianjin and Zhangjiakou, China].  

PubMed

Atmospheric particulate matter (PM10) was collected at sampling locations of Beijing, Tianjin and Zhangjiakou from April 1st to May 24th, 2012. The mass concentration of PM10 and concentrations of ions, elemental carbon (EC) and organic carbon (OC) in PM10 were determined. The results showed that average mass concentration of PM10 were 233.82 microg x m(-3) for Beijing, 279.64 microg x (-3) for Tianjin and 238.13 microg x m(-3) for Zhangjiakou, respectively. Backward trajectories results confirmed dust storm events occurred from 27th to 29th April. The maximum daily mass concentrations of PM10 were 755.54 microg x m(-3) for Beijing, 831.32 microg x m(-3) for Tianjin and 582.82 microg x m(-3) for Zhangjiakou during the dust storm episodes, respectively. Water-soluble ions (Na+, NH4+, Ca2+, K+, F-, Cl-, NO3-, SO4(2-)), organic carbon (OC) and elemental carbon (EC) were major aerosol components during the dust storm episodes, and their concentrations were higher than non-dust storm days. In addition, dust storm caused increases in NO3-, SO4(2-) and enrichment of secondary organic carbon (SOC) concentration relative to OC, suggesting that chemical reaction processes involving gas-particle conversion occurred during the long-distance transport of aerosol particles. PMID:25338350

Liu, Qing-Yang; Liu, Yan-Ju; Zhao, Qiang; Zhang, Ting-Ting; Zhang, Mei-Gen; Wang, Cun-Mei

2014-08-01

130

77 FR 32117 - Advisory Board on Radiation and Worker Health (ABRWH or Advisory Board), National Institute for...  

Federal Register 2010, 2011, 2012, 2013

...Engineering and Analytical Center (Winchester, MA), Weldon Spring Plant (Weldon Spring, MO), Hanford (1972-1983), Los Alamos National Laboratory, General Steel Industries (Granite City, IL), Clarksville Facility (Clarksville, TN), Mound...

2012-05-31

131

Force of an actin spring  

NASA Astrophysics Data System (ADS)

The acrosomal process of the horseshoe crab sperm is a novel mechanochemical molecular spring that converts its elastic stain energy to mechanical work upon the chemical activation by Ca2+. Twisted and bent, the initial state of the acrosomal bundle features a high degree of complexity in its structure and the energy is believed to be stored in the highly strained actin filaments as an elastic potential energy. When activated, the bundle relaxes from the coil of the highly twisted and bent filaments to its straight conformation at a mean velocity of 15um/s. The mean extension velocity increases dramatically from 3um/s to 27um/s when temperature of the medium is changed from 9.6C to 32C (respective viscosities of 1.25-0.75cp), yet it exhibits a very weak dependence on changes in the medium viscosity (1cp-33cp). These experiments suggest that the uncoiling of the actin spring should be limited not by the viscosity of the medium but by the unlatching events of involved proteins at a molecular level. Unlike the viscosity-limited processes, where force is directly related to the rate of the reaction, a direct measurement is required to obtain the spring force of the acrosomal process. The extending acrosomal bundle is forced to push against a barrier and its elastic buckling response is analyzed to measure the force generated during the uncoiling.

Shin, Jennifer; Mahadevan, L.; Matsudaira, Paul

2003-03-01

132

PChem Seminar 5102 005 Spring Term 2014  

E-print Network

PChem Seminar 5102 005 Spring Term 2014 Location: Experimental Science, Room 00120 Time: Fridays, 1p.m. Jan. 24 Stefan Estreicher Physics Department, Texas Tech University, Lubbock, Texas Phonons in their electronically excited states. Feb. 7 Micah J. Green, Department of Chemical Engineering, Texas Tech University

Gelfond, Michael

133

Spring 2012 Maxwell Perspective 21 Spring Street Presbyterian  

E-print Network

Spring 2012 Maxwell Perspective 21 Spring Street Presbyterian 20 Maxwell Perspective Spring 2012 L of anthropology that blends biological, historical, and cultural analysis. Part of her expertise lies in human

Raina, Ramesh

134

Syllabus for EK424, Spring 2014 "Thermodynamics and Statistical Mechanics"  

E-print Network

Syllabus for EK424, Spring 2014 "Thermodynamics and Statistical Mechanics" Boston University or molecules. The subject of statistical mechanics is concerned with expressing thermodynamics and statistical mechanics, therefore, are essential for explaining the forces that drive chemical and biochemical

Vajda, Sandor

135

A study of spring rates of dynamically loaded helical springs  

E-print Network

of helical compression springs under conditions of single surge loading. His basic procedure was to release a spring from an initial state of compression, making high speed time-displacement photographs of the spring as it expanded. He also used... of helical compression springs under conditions of single surge loading. His basic procedure was to release a spring from an initial state of compression, making high speed time-displacement photographs of the spring as it expanded. He also used...

Whitwell, Franklin Carroll

2012-06-07

136

Masses and Springs  

NSDL National Science Digital Library

In this interactive simulation adapted from the University of Colorado's Physics Education Technology project, hang various masses from different springs and see the kinetic, potential, and thermal energy of each spring system. You can even slow time or move your demonstration to another planet.

Foundation, Wgbh E.

2007-04-19

137

Cold Spring Mount Washington  

E-print Network

Spring Mount Washington Light Rail McAuley Hall Falls@ Woodheights Falls@ 43rd Keswick North Bldg Keswick 83 JonesFallsExpy 83 JonesFallsExpy 83 FallsRd N S EW Homewood - Mt. Washington Shuttle NextBus textth Keswick North Building Falls at 42nd Falls at Cold Spring Mount Washington Light Rail McAuley Hall

Hattar, Samer

138

SPRING 2004 the Homeless  

E-print Network

TrumanScholarship,establishedbytheUnitedStatesCongressin1975asamemo- rialtoHarryS.Truman.Witha$26SPRING 2004 Hope for the Homeless U of M Alumni Making a Difference #12;Above: Spring and all its play key roles in getting homeless people back on track as Memphis and Shelby County push to end

Dasgupta, Dipankar

139

Spring Motion Model  

NSDL National Science Digital Library

The Spring Motion Model shows the motion of a block attached to an ideal spring. The block can oscillate back-and-forth horizontally. You can change the mass of the block, the spring constant of the spring, and the initial position of the block. You can then see the resulting motion of the block, as well as see bar graphs of the energy and plots of the block's position, speed, and acceleration as a function of time. The Spring Motion model was created using the Easy Java Simulations (EJS) modeling tool. It is distributed as a ready-to-run (compiled) Java archive. Double clicking the ejs_bu_reference_circle.jar file will run the program if Java is installed.

Duffy, Andrew

2010-05-03

140

Thermal springs in Lake Baikal  

USGS Publications Warehouse

The ??18O values of pore wqters range from -15.2??? to -16.7???, and ??D values range from -119??? to -126??? (both isotopes determined relative to standard mean ocean water [SMOW]). Bottom water in Lake Baikal has a ??18O value of -5.6??? and a ??D value of -120???. Pore waters in the vent area are significantly enriched in Mg, K, Ca, and especially Na and have the lowest ??D and ??18O values; these pore waters are isotopically and chemically distinct from pore waters in other, more typical parts of the lake. The pore-water isotopic data fall on a local meteoric water line, and covariations in water isotopes and chemistry are not consistent with evaporation or hydrothermal water-rock interaction. The thermal springs represent discharging meteoric waters that have been gently heated during subsurface circulation and are largely unaltered isotopically. Chemical variations are most likely due to dissolution of subsurface evaporites. -from Authors

Shanks, W. C., III; Callender, E.

1992-01-01

141

Thermal springs in Lake Baikal  

SciTech Connect

Pore waters extracted from sediment cores were analyzed for their oxygen and hydrogen isotopic compositions and major ion chemistry to determine the source of water from a vent area for diffuse lake-bottom thermal springs or seeps in Frolikha Bay, northeastern Lake Baikal. The {delta}{sup 18}O values of pore waters range from {minus}15.2{per thousand} to {minus}16.7{per thousand}, and {delta}D values range from {minus}119{per thousand} to {minus}126{per thousand} (both isotopes determined relative to standard mean ocean water (SMOW)). Bottom water in Lake Baikal has a {delta}{sup 18}O value of {minus}5.6{per thousand} and a {delta}D values of {minus}120{per thousand}. Pore waters in the vent area are significantly enriched in Mg, K, Ca, and especially Na and have the lowest {delta}D and {delta}{sup 18}O values; these pore waters are isotopically and chemically distinct from pore waters in other, more typical parts of the lake. The pore-water isotopic data fall on a local meteoric water line, and covariations in water isotopes and chemistry are not consistent with evaporation or hydrothermal water-rock interaction. The thermal springs represent discharging meteoric waters that have been gently heated during subsurface circulation and are largely unaltered isotopically. Chemical variations are most likely due to dissolution of subsurface evaporites.

Shanks, W.C. III; Callender, E. (Geological Survey, Reston, VA (United States))

1992-06-01

142

Studying springs in series using a single spring  

NASA Astrophysics Data System (ADS)

Springs are used for a wide range of applications in physics and engineering. Possibly, one of their most common uses is to study the nature of restoring forces in oscillatory systems. While experiments that verify Hooke's law using springs are abundant in the physics literature, those that explore the combination of several springs together are very rare. In this paper, an experiment designed to study the static properties of a combination of springs in series using only one single spring is presented. Paint marks placed on the coils of the spring allowed us to divide it into segments, and consider it as a collection of springs connected in series. The validity of Hooke's law for the system and the relationship between the spring constants of the segments and the spring constant of the entire spring are verified experimentally. The easy setup, accurate results, and educational benefits make this experiment attractive and useful for high school and first-year college students.

Serna, Juan D.; Joshi, Amitabh

2011-01-01

143

Double Spring Year  

E-print Network

Broadcast Transcript: South Korean fiancs are under pressure and the country's esteemed fortune tellers are turning up the heat. Why? Because this lunar year has two first days of spring--one last January, and another ...

Hacker, Randi; Tsutsui, William; vonHolten, Leslie

2006-12-13

144

Spring 2013 Action blockbuster  

E-print Network

Spring 2013 Action blockbuster Sheffield's claim on first action movie Also inside Global warning the burglar escapes his pursuers by boarding a train as it leaves a platform. Finally, a policeman tackles him

Wrigley, Stuart

145

Learning From Real Springs  

E-print Network

Many springs do not obey Hooke's Law because they are constructed to have an intrinsic tension which must be overcome before normal elongation occurs. This property, well-known to engineers, is universally neglected in elementary physics courses...

Bassichis, William

2013-01-29

146

ELEG620: Solar Electric Systems University of Delaware, ECE Spring 2008 C. Honsberg PV System Components  

E-print Network

· Outline ­ Battery basics: · Chemical redox reactions · Components of a battery · Equilibrium voltage of Delaware, ECE Spring 2008 C. Honsberg Chemistry Basics · Mols, molar mass · Molarity · Balancing chemical equations #12;ELEG620: Solar Electric Systems University of Delaware, ECE Spring 2008 C. Honsberg Oxidation

Honsberg, Christiana

147

Metal-coated Si springs: Nanoelectromechanical actuators J. P. Singh,a)  

E-print Network

with substrate rotation, and were rendered conductive by coating with a 10-nm-thick Co layer using chemical vapor the chemical vapor deposition CVD technique. A dc current is passed through the nano- spring by a conductiveMetal-coated Si springs: Nanoelectromechanical actuators J. P. Singh,a) D.-L. Liu, D.-X. Ye, R. C

Wang, Gwo-Ching

148

Chemical of the Week  

NSDL National Science Digital Library

Professor Bassam Z. Shakhashiri at the University of Wisconsin-Madison adds a new chemical to this page every week. The site was created for his general chemistry courses, Chem 103 and Chem 104, to increase students' knowledge about various chemicals and their use. Users can view featured chemicals from the currently updated fall course (103) or from the spring course (104). The chemicals featured thus far include: lime, methane, uranium, the chemistry of autumn colors, and gases that emit light.

Shakhashiri, Bassam Z.

2007-05-30

149

Spring Pendulum Model  

NSDL National Science Digital Library

The Ejs Spring Pendulum model displays the model of a hollow mass that moves along a rigid rod that is also connected to a spring. The mass, therefore, undergoes a combination of spring and pendulum oscillations. The initial position and velocities, as well as the spring constant can be changed via textboxes. You can modify this simulation if you have Ejs installed by right-clicking within the plot and selecting Open Ejs Model from the pop-up menu item. Ejs Spring Pendulum model was created using the Easy Java Simulations (Ejs) modeling tool. It is distributed as a ready-to-run (compiled) Java archive. Double clicking the ejs_ehu_oscillations_elastic.jar file will run the program if Java is installed. Ejs is a part of the Open Source Physics Project and is designed to make it easier to access, modify, and generate computer models. Additional Ejs models for classical mechanics are available. They can be found by searching ComPADRE for Open Source Physics, OSP, or Ejs.

Aguirregabiria, Juan

2008-11-11

150

Dynamics of an actin spring  

NASA Astrophysics Data System (ADS)

The acrosome of the sperm of the horseshoe crab (Limulus Polyphemus) is an unusual actin based system that shows a spectacular dynamical transition in the presence of Ca++ that is present in abundance in the neighborhood of the egg. During this process, the bundle, which is initially bent and twisted uncoils and becomes straight in a matter of a few seconds. Based on microstructural data, we propose a model for the dynamics of uncoiling that is best represented by a triple-well potential corresponding to the different structural arrangements of the supertwisted filaments. Each of the false, true and coiled states corresponds to a local minimum of the energy, with the true state being the one with the lowest energy. Using an evolution equation derived by balancing torques, we investigate the nucleation and propagation of the phase transition and compare the results with those of experiments. Our model quantifies the hypothesis that the acrosomal bundle behaves like a mechano-chemical spring.

Riera, Christophe; Mahadevan, L.; Shin, Jennifer; Matsudaira, Paul

2003-03-01

151

Silent Spring Institute  

NSDL National Science Digital Library

Named after ecologist Rachel Carson's landmark book, _Silent Spring_, the Silent Spring Institute (SSI) is a "scientific research organization dedicated to identifying the links between the environment and women's health, especially breast cancer." The SSI website contains descriptions of several research projects including the Cape Cod Breast Cancer and Environment Study, Geographic Information System Exposure Assessment, Groundwater and Drinking Water Initiatives, and Household Exposure Study. SSI also makes a number of downloadable publications available including journal articles and issues of the Institute's own _Silent Spring Review_. The site posts relevant news stories from a variety of sources, and contains a sizeable News Archive as well. In addition, the site offers a great many annotated links, and a glossary with pertinent medical, scientific, and environmental terms.

152

9. CONTEXTUAL VIEW SOUTHSOUTHEAST TOWARDS SPRING SITE. SPRING LEFT CORNER. ...  

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

9. CONTEXTUAL VIEW SOUTH-SOUTHEAST TOWARDS SPRING SITE. SPRING LEFT CORNER. - Juniata Mill Complex, 22.5 miles Southwest of Hawthorne, between Aurora Crater & Aurora Peak, Hawthorne, Mineral County, NV

153

77 FR 52335 - Advisory Board on Radiation and Worker Health (ABRWH or Advisory Board), National Institute for...  

Federal Register 2010, 2011, 2012, 2013

...DOE Program Update; SEC petitions for: Oak Ridge National Laboratory, Hanford (1987-1989; petition 155), Los Alamos National Laboratory, Rocky Flats Plant, General Steel Industries (Granite City, IL), Weldon Spring Plant (Weldon...

2012-08-29

154

Why Springs Are Valuable Natural springs are important aquatic resources.  

E-print Network

backbones, such as insects and snails) thrive in clean, spring-fed streams. The moist soil and lush, to large fissures in rocks or openings in the ground. If the rate of flow is rapid, a pool of clear water and marks the beginning of a spring-fed stream. Springs are replenished by precipitation entering soil

Liskiewicz, Maciej

155

1harvard dental bulletin spring 2011 Spring 2011  

E-print Network

1harvard dental bulletin · spring 2011 Spring 2011 Volume 71, Number 1 Harvard School of Dental #12;2 harvard dental bulletin · spring 2011 Editorial Staff Allen Ali Nasseh, Alumni Editor Jan Reiss The Harvard Dental Bulletin is published three times a year for alumni and friends of the Harvard School

Bar, Moshe

156

Vector Calculus Spring 1997  

E-print Network

Vector Calculus Math 241 Spring 1997 Instructor Information: Professor: Bob Sharpley Office: 313D­ tor calculus including vector fields, line integrals, and Green's theorem in the plane. Exams in Math 142 or an equivalent course. Text: Calculus with Analytic Geometry, by D. Varberg and E.J. Purcell

Sharpley, Robert

157

AGRICULTURAL SPRING/SUMMER  

E-print Network

invasive species to be the most problematic issue facing natural resources. After painstaking workMICHIGAN AGRICULTURAL EXPERIMENT STATION SPRING/SUMMER 2007 VOL. 25 NOS. 1 & 2 uturesfutures a rattlesnake, moose and elk. Like Michigan's amazing array of natural resources, the fisheries and wildlife

158

Spring Into Energy  

NSDL National Science Digital Library

Maria lifts up a book from the table. Dietre eats cereal for breakfast. Akisha winds up a toy robot. Jacob puts batteries in a flashlight. These seemingly dissimilar events demonstrate various ways children experience energy daily. You can help primary students make sense of these experiences and build their conceptual understanding of energy with this series of hands-on energy activities. We've used these lessons successfully for several years and have been continually impressed with the understandings that students develop as they conduct them. The lessons focus primarily on elastic, or spring, energy and use a conceptual hook, a simple phrase that identifies the key ideas from the activities. In these lessons, the "hook" is "lift, squeeze, stretch, and twist," which summarizes some of the ways students can "put" energy in objects. We chose to emphasize spring energy because it is tangible--students can easily observe the spring (or similar objects such as a rubberband) change as they squeeze, stretch, or twist it, and they can feel the spring resist them as they change its shape.

Van Hook, Stephen; Huziak-Clark, Tracy

2007-03-01

159

CHEMISTRY 450 Spring, 2009  

E-print Network

January): Philosophers of Science; Group Presentations Journals: A-C WEEK 3 (21 January): Sociology of Science Journals: D-G WEEK 4 (28 January): Green Chemistry Journals: H-N WEEK 5 (4 February): Green to change. #12;CH 450 Spring, 2009 -2- Course Outline (Tentative) Journal due dates are designated each week

Stuart, Steven J.

160

Creative Arts SPRING 2014  

E-print Network

in the music industry. But the shadow of paramilitary violence is always present. Catchpenny Twist is fullSCHOOL OF Creative Arts EVENTS SPRING 2014 SONIC ARTS FILM MUSIC DRAMA Find us on Facebook Harty Room FREE awarded a Doctorate in Music Performance from the Royal Irish Academy of Music

Paxton, Anthony T.

161

Echoes of Spring Valley.  

ERIC Educational Resources Information Center

Designed to preserve the rich heritage of the rural school system which passed from the education scene in the 1930's and 1940's, this narrative, part history and part nostalgia, describes the author's own elementary education and the secure community life centered in the one room Spring Valley School in Hamilton County, Iowa, in the early decades

Boyken, J. Clarine J.

162

Atascocita Springs Elementary School  

ERIC Educational Resources Information Center

With the significant amount of time invested in researching the best techniques for delivering instruction to their students, Humble ISD is always on the forefront of education. Taking the recommendations of their active and vocal community groups, the district embarked in the design of the 26th elementary school, Atascocita Springs Elementary

Nigaglioni, Irene; Yocham, Deborah

2011-01-01

163

AGRICULTURAL SPRING 2005  

E-print Network

to insert the genes into economically important agricultural crop plants. The history of Michigan State University, the pioneer land-grant institution, is closely tied to the history of agriculture and naturalMICHIGAN AGRICULTURAL EXPERIMENT STATION SPRING 2005 VOL. 23 NO. 1 Plant Breeding and Genetics

164

Dean's List Spring, 2012  

E-print Network

Dean's List Spring, 2012 Dept Name Honor ART Adams,Danielle M High Honors ART Andrews,Annie Jean Honors ART Atkinson,Adam J Highest Honors ART Avery,Victoria M High Honors ART Baez,Angela LaRee High Honors ART Boyce,Kelsey J Honors ART Brand,Cassandra Elizabeth High Honors ART Braudrick,Mary P Honors

Barrash, Warren

165

Renaissance Administrator, Spring 1998.  

ERIC Educational Resources Information Center

This spring 1998 issue of Renaissance Administrator features the following articles: (1) "Servant Leadership and Higher Education--What is Leadership?" (Richard E. Hasselbach); (2) "Teaching Writing in the 90's--Carnivorous Printers and Dying Grandmothers" (Helen Ruggieri); (3) Assignment--Journal Writing" (Lynn Muscato); and (4) "A Business

Dowdy, June P., Ed.

1998-01-01

166

Early Spring Flowers  

Microsoft Academic Search

YOUR readers will doubtless have been observing how the mildness of the weather this winter, so far, has hastened on the spring flowers. I am inclined to think that some of the dates mentioned below have not often been paralleled. The dates in brackets, of the usual flowering times, have been taken from Babington's ``Manual of Botany'' and Johnson's ``Gardeners'

E. Armitage

1898-01-01

167

Biochemistry 482 Spring 2009  

E-print Network

1 Biochemistry 482 Spring 2009 Instructor: Dr. Stephen Lodmell Class time/place: MWF 10:10-11:00am, to be arranged Phone: 243-6393 email: stephen.lodmell@umontana.edu Text: Garrett and Grisham Biochemistry, 3rd ed. (updated) Overview: The second semester of biochemistry builds on the foundation laid by BIOC481

Vonessen, Nikolaus

168

1981 Spring Meeting Report  

NASA Astrophysics Data System (ADS)

Approximately 2150 participants registered for the 1981 Spring Meeting. More than 1500 papers were presented.The spaciousness of the Baltimore Convention Center provided ample opportunity for attendees to exchange ideas and interact with their colleagues. Here are some candid shots.

169

Spring 2014 Pedal power  

E-print Network

at York 9 Contents magazine Spring 2014 Produced by Communications and marketing University of York deadlines www.york.ac.uk/magazine Email magazine@york.ac.uk The editorial and Creative Content office reserves the right to edit submissions Design Design and Print solutions University of York Telephone: +44

170

SPRING 2012 HIS STRIPES  

E-print Network

SPRING 2012 EARNING HIS STRIPES Tiger football ushers in a new era, page 14 PIECES of HOME Students find a way to make campus a home away from home, page 26 BLASTS FROM THE PAST Oral history project University News Sports Bits Ready to Earn His Stripes by Greg Russell U of M football has struggled

Dasgupta, Dipankar

171

Prepare for Unpredictable Spring Weather  

MedlinePLUS

... flooding. Whenever warm, moist air collides with cool, dry air, thunderstorms can occur. For much of the world, this happens in spring and summer. Because spring weather is so unpredictable, you may be unprepared when ...

172

Tethered Mass and Spring Model  

NSDL National Science Digital Library

The Tethered Mass and Spring model shows a mass constrained to move in the x-direction by a horizontal rod and connected to a spring of natural length L = 10. One end of the spring is connected to a movable (draggable) ceiling and the other end is connected to the mass. Users can drag the mass along the rod and users can control the height of the ceiling H by dragging which changes the stretch of the spring. The height H, the spring constant k, and the natural length of the spring L can also be adjusted using the sliders at the bottom of the position vs. time graph. The Tethered Mass and Spring model was created using the Easy Java Simulations (EJS) modeling tool. It is distributed as a ready-to-run (compiled) Java archive. Double click the ejs_mech_lagrangian_TetheredMassAndSpring.jar file to run the program if Java is installed.

Christian, Wolfgang

2009-09-02

173

2010 SPORTS CAMP Spring Training  

E-print Network

SIGNUPNOW! 2010 SPORTS CAMP Titans Baseball Baseball Spring Training Focus on acquisition of skills. ELIGIBILITY: Baseball Spring Training: For boys, ages 8-13 SCHEDULE: Baseball Spring Training: February 27­ 28 Training The registration cost per child is $80.00 for the whole weekend or $60 per day. FOR MORE

Jones, Michelle

174

49 CFR 230.111 - Spring rigging.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 2013-10-01 false Spring rigging. 230.111 Section 230.111 Transportation...Equalizing System 230.111 Spring rigging. (a) Arrangement of springs and equalizers...permissible. (b) Spring or spring rigging condemning defects. Springs or...

2013-10-01

175

49 CFR 230.111 - Spring rigging.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 2011-10-01 false Spring rigging. 230.111 Section 230.111 Transportation...Equalizing System 230.111 Spring rigging. (a) Arrangement of springs and equalizers...permissible. (b) Spring or spring rigging condemning defects. Springs or...

2011-10-01

176

49 CFR 230.111 - Spring rigging.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 2010-10-01 false Spring rigging. 230.111 Section 230.111 Transportation...Equalizing System 230.111 Spring rigging. (a) Arrangement of springs and equalizers...permissible. (b) Spring or spring rigging condemning defects. Springs or...

2010-10-01

177

49 CFR 230.111 - Spring rigging.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 2012-10-01 false Spring rigging. 230.111 Section 230.111 Transportation...Equalizing System 230.111 Spring rigging. (a) Arrangement of springs and equalizers...permissible. (b) Spring or spring rigging condemning defects. Springs or...

2012-10-01

178

(January 10, 2013) Spring-Mass Oscillations  

E-print Network

the supplied spring obeys Hooke's law, and if so, to calculate its spring constant. (2) To determine the spring of the spring constant (sometimes called the force constant) as in Hooke's Law? Based on your data and analysis hopefully convinced you that the spring you are using can be modeled closely by Hooke's Law. When the spring

Collins, Gary S.

179

Hot Spring Metagenomics  

PubMed Central

Hot springs have been investigated since the XIX century, but isolation and examination of their thermophilic microbial inhabitants did not start until the 1950s. Many thermophilic microorganisms and their viruses have since been discovered, although the real complexity of thermal communities was envisaged when research based on PCR amplification of the 16S rRNA genes arose. Thereafter, the possibility of cloning and sequencing the total environmental DNA, defined as metagenome, and the study of the genes rescued in the metagenomic libraries and assemblies made it possible to gain a more comprehensive understanding of microbial communitiestheir diversity, structure, the interactions existing between their components, and the factors shaping the nature of these communities. In the last decade, hot springs have been a source of thermophilic enzymes of industrial interest, encouraging further study of the poorly understood diversity of microbial life in these habitats.

Lopez-Lopez, Olalla; Cerdan, Maria Esperanza; Gonzalez-Siso, Maria Isabel

2013-01-01

180

The effect of cryogenic treatment on the fatigue life of chrome silicon steel compression springs  

NASA Astrophysics Data System (ADS)

The purpose of this dissertation is to explore the effect of cryogenic treatment on the fatigue life of compression springs. Product manufacturers are constantly searching for ways to make their products last longer. This dissertation addresses three questions: (1) What is the effect of cryogenic treatment on the fatigue life of chrome silicon steel compression springs? Does the life increase, decrease, or remain the same? (2) What is the effect of cryogenic treatment on the Percent Load Loss (Stress Relaxation) of chrome silicon steel compression springs? (3) What are the possible changes in the material that cause these effects? The following tests were carried out; wire tensile test, hardness test, chemical analysis, residual stress, retained austenite, lattice parameter, force vs. deflection, percent load loss (stress relaxation), fatigue, microstructures, and eta carbides. This research produced a number of key findings: (1) The cryogenically treated springs had a longer cycle life and a higher endurance limit than the untreated springs. (2) The percent load loss (stress relaxation) of the cryogenically treated springs was similar to the untreated springs. (3) The cryogenically treated springs had a higher compressive residual stress at the surface than the untreated springs. The conclusions of this research are that the cryogenic treatment of chrome silicon steel compression springs led to an increase in compressive residual stress on the wire surface, which in turn led to an increase in fatigue life and a higher endurance limit. A recommended future study would be to compare cryogenically treated springs to shot peened springs.

Smith, Debra Lynn

181

Biogeographic patterns of desert springs in the Great Basin with an emphasis on regional aquifer thermal springs as refugia for vulnerable crenobiotic species  

NASA Astrophysics Data System (ADS)

The desert springs of the Great Basin Region in western North America provide ideal systems to study biogeographic and evolutionary patterns. In arid regions, springs are biodiversity hotspots because they often provide the sole source of water for the biota within and around them. In the Great Basin, springs provide critical habitat for diverse and extensive crenobiotic flora and fauna comprising over 125 endemic species. These aquatic environments represent island ecosystems surrounded by seas of desert, and researchers have compiled large databases of their biota and chemistry. Consequently, desert springs are excellent systems for biogeographic studies and multivariate statistical analyses of relationships between the chemical and physical characteristics of the springs and the biological communities that they support. The purpose of this study is to elucidate the relationships between the physicochemical characteristics of springs and their biota using multivariate statistical analyses to characterize 1325 springs, including regional aquifer springs, local aquifer cold springs and geothermal springs. The analyses reveal that regional aquifer thermal springs harbor disproportionate numbers of crenobiotic species including endemic gastropods, fishes, and aquatic insects. However, these regional aquifer springs also contain significantly more introduced species than cold and geothermal local aquifer springs. Springs are threatened by anthropogenic impacts including groundwater depletion and pollution, alteration of flow regimes, and the introduction of exotic species. In this study, one of the major factors that distinguished regional aquifer thermal springs from cold and geothermal local aquifer springs was the higher number of introduced species found in regional aquifer springs. This may be due to the influences of the same physicochemical characteristics that allow regional aquifer springs to serve as refugia for endemic species--species that are able to gain access to these environments and cope with their extreme physicochemical characteristics may be provided with refuge from extinction. The disproportionate number of endemic crenobiotic species found in regional aquifer thermal springs, as well as in some local aquifer geothermal springs, within the Great Basin strongly suggests that these hydrothermal habitats represent important biodiversity hotspots, and efforts to conserve and restore these unique ecosystems should be a major priority to ensure that the valuable information that these species can provide is not lost forever.

Forrest, M.; Sada, D. W.; Norris, R. D.

2013-12-01

182

Chemistry of thermal and nonthermal springs in the vicinity of Lassen Volcanic National Park  

USGS Publications Warehouse

Meaningful applications of water geothermometry to thermal springs in and around Lassen Volcanic National Park (LVNP) are limited to Growler Hot Spring and Morgan Hot Springs. Most hot springs located within LVNP are low-chloride, acid-sulfate waters associated with nearby steam vents. This type of hot-spring activity is characteristically found above vapor-dominated hydrothermal systems. These acid-sulfate waters are not generally useful for liquid chemical geothermometry, however, because their chemical compositions result from water-rock interaction at relatively shallow depths. Thermal waters at Drakesbad and in Little Hot Springs Valley have neutral-pH, low-Cl concentrations and have estimated Na-K-Ca and Na-Li geothermometer temperatures close to measured spring temperatures of 65 to 95??C. Hot-spring waters located south of LVNP at Growler Hot Spring, Morgan Hot Springs, and in the south-central part of LVNP in the Walker "O" No. 1 well at Terminal Geyser are rich in chloride and yield calculated geothermometer temperatures between 220 and 230??C. These thermal waters probably originate within a zone of upflow of high-enthalpy fluid inside LVNP and cool conductively during lateral flow to the south and southeast. ?? 1985.

Thompson, J.M.

1985-01-01

183

Magnetic Spring Device  

E-print Network

A cylindrical system is proposed that will store magnetic energy in a localized azimuthal field that can then be quickly released on Alfvenic timescales, accompanied by the formation of a flowing Z-pinch plasma. The magnetized plasma is MHD in character and will have unilateral axial momentum with Alfvenic speeds. Conventional plasma gun injectors (Marshall type) have a limited parameter space of operation. The "magnetic spring" momentum injector differs from Marshall guns in that it has an already stored strong magnetic field before release. The resulting parameter space is much broader. There are possible applications to momentum injectors for fusion and to plasma and rail guns.

Hassam, A B

2009-01-01

184

Dissolved Organic Matter Concentration and Composition in Hot Spring Ecosystems  

NASA Astrophysics Data System (ADS)

Hot springs host dynamic ecosystems with wide ranges in temperature, pH, major and minor element content, as well as diverse microbial communities. As temperatures decrease from boiling, chemolithotrophic communities give way to phototrophic communities that include heterotrophs. As a consequence, the cycling of carbon is likely to undergo dramatic changes over fairly narrow spatial and temporal ranges. It may, therefore, not be surprising that hot springs exhibit broad ranges in dissolved organic carbon (DOC) concentrations. As an example, water samples collected in July 2005 from Yellowstone National Park hot spring ecosystems have DOC concentrations that range from less than 0.5 mg C/kg to greater than 75 mg C/kg. There are no obvious relationships between pH and DOC concentration, or temperature and DOC concentration for these systems. DOC concentrations generally decrease by 10 to 90% from the source hot spring down outflow channels, presumably due to heterotrophic activity. New results using electrospray ionization mass spectrometry (ESI-MS) indicate that hot spring DOC compounds range in molecular weight from 30 up to 1500 amu, with the most abundant peaks occurring at <400 amu. The DOC in hot springs exhibits predominantly positive-mode detected (basic-type) compounds and negative-mode detected (acidic- type) compounds. ESI-MS provides a molecular-level fingerprint of the DOC from hot springs, outflow channels and surface water sources that suggest the composition of the hot spring DOC is the result of multiple organic matter sources and a variety of biogeochemical processes. ESI-MS results allow us to begin to assess which fraction (molecular weight and general chemical character) of the DOC pool is bioavailable to heterotrophs, and how the bioavailable pool of DOC varies among hot spring systems.

Hartnett, H.; Alexander, K.; Shock, E.; Klonowski, S.; Windman, T.

2006-12-01

185

Numerical simulation as a tool for checking the interpretation of karst spring hydrographs  

Microsoft Academic Search

A schematic representation of karst aquifers may be that of a high hydraulic conductivity channel network with kilometre-wide intervals, surrounded by a low hydraulic conductivity fractured limestone volume and connected to a local discharge area, the karst spring. The behaviour of the karst spring (hydrographs, chemical or isotopic composition, etc.) represents the global response of the karst aquifer to input

Laurent Eisenlohr; Lszl Kirly; Mahmoud Bouzelboudjen; Yvan Rossier

1997-01-01

186

Mercury in water and biomass of microbial communities in hot springs of Yellowstone National Park, USA  

Microsoft Academic Search

Ultra-clean sampling methods and approaches typically used in pristine environments were applied to quantify concentrations of Hg species in water and microbial biomass from hot springs of Yellowstone National Park, features that are geologically enriched with Hg. Microbial populations of chemically-diverse hot springs were also characterized using modern methods in molecular biology as the initial step toward ongoing work linking

Susan A. King; Sabrina Behnke; Kim Slack; David P. Krabbenhoft; D. Kirk Nordstrom; Mark D. Burr; Robert G. Striegl

2006-01-01

187

Geothermal-resource assessment of the Steamboat-Routt Hot Springs area, Colorado. Resources Series 22  

SciTech Connect

An assessment of the Steamboat Springs region in northwest Colorado was initiated and carried out in 1980 and 1981. The goal of this program was to delineate the geological features controlling the occurrence of the thermal waters (temperatures in excess of 68/sup 0/F (20/sup 0/C)) in this area at Steamboat Springs and 8 miles (12.8 km) north at Routt Hot Springs. Thermal waters from Heart Spring, the only developed thermal water source in the study area, are used in the municipal swimming pool in Steamboat Springs. The assessment program was a fully integrated program consisting of: dipole-dipole, Audio-magnetotelluric, telluric, self potential and gravity geophysical surveys, soil mercury and soil helium geochemical surveys; shallow temperature measurements; and prepartion of geological maps. The investigation showed that all the thermal springs appear to be fault controlled. Based on the chemical composition of the thermal waters it appears that Heart Spring in Steamboat Springs is hydrologically related to the Routt Hot Springs. This relationship was further confirmed when it was reported that thermal waters were encountered during the construction of the new high school in Strawberry Park on the north side of Steamboat Springs. In addition, residents stated that Strawberry Park appears to be warmer than the surrounding country side. Geological mapping has determined that a major fault extends from the Routt Hot Springs area into Strawberry Park.

Pearl, R.H.; Zacharakis, T.G.; Ringrose, C.D.

1983-01-01

188

PhET: Masses & Springs  

NSDL National Science Digital Library

This simulation provides a realistic virtual mass-and-spring laboratory. Users can explore spring motion by manipulating stiffness of the spring and mass of the hanging weight. Concepts of Hooke's Law and elastic potential energy are further clarified through charts showing kinetic, potential, and thermal energy for each spring. This item is part of a larger collection of simulations developed by the Physics Education Technology project (PhET). The simulations are animated, interactive, and game-like environments in which students learn through exploration. All of the sims are freely available from the PhET website for incorporation into classes.

2008-07-29

189

Signals of Spring  

NSDL National Science Digital Library

Signals of Spring is a web-based professional development package that provides training for teachers and integrated science curricular materials including data interpretation and applications for teachers and students. Students in expert teams work collaboratively and use NASA and other satellite earth imagery to explain the migration of land and marine animals tracked by satellites. Remote sensing imagery and GIS type interactive maps are seen in the site. Students select an area of expertise to focus on including weather, geography, vegetation, bathymetry, sea surface, or phytoplankton (chlorophyll). Students maintain analysis journals online and receive feedback from wildlife biologists and earth scientists. Teachers can use the online learning program to become certified in Signals of Spring and implement the program in their classrooms. Professional development for teachers is available as in-service or online. Three graduate credits are available at a low teacher cost. Connections are made between the content students need for standardized tests and concepts in geography, earth science, language arts, life science and technology. Registration is required for full access to the learning materials for students and teachers.

Schuster, Glen

2002-05-23

190

The Science of Spring  

NSDL National Science Digital Library

This Topic in Depth explores the Web's offering related to the science of the spring season. The first site -- Seasons, Equinoxes, Solstices, and Climate (1) -- is offered by Assistant Professor of Physics and Astronomy, Eric G. Blackman of the University of Rochester. Visitors can learn how the earth's axis and orbit causes the seasons and what the equinox and solstice are, as well as about astronomical effects on the Earth's climate. The second Web site tackles similar issues, but at a more elementary level. Seasons Reasons (2), from ScienceU.com, explains what causes the seasons to change, and provides informative graphics of the Earth's orbit and axis angle during the various seasons. Next, from MSNBC News, comes the Mysteries of the Universe: What Causes Earth's Seasons (3) Web site. The highlight of this site is the well-designed and informative graphic at the top of the page that concisely explains the cause of the seasons. Other portions of the site include the history of our understanding of these topics, a description of the vernal and autumnal equinox, and more. The fourth site related to spring is offered by The University of Illinois Extension called There is a Season (4). The site describes how the sun rises and sets differently throughout the year, and provides two simple but well designed lesson plans related to this topic called I See the Light and Grab Some Rays. The next Web site focuses on a different spring science phenomenon specific to lakes called What is Lake Turnover? (5). Maintained by the Missouri Department of Conservation, the site (although a bit graphically uninteresting) gives an informative description of what spring lake turnover is and what causes it. The sixth site, also dealing with lake turnover, is provided by the Sea Education Association. This well-designed site offers a student activity that demonstrates this process, which is called Density Dynamics (6). The introduction explains that bodies of water form layers based on differences in density affected most by temperature in fresh water and both temperature and salinity in salt water. Using beakers filled with water of varying temperatures and food coloring, students observe what happens when these fluids are mixed in order to better understand what happens naturally in lakes. From the National Institute of Standards and Technology comes the Saving Time, Saving Energy: Daylight Saving Time, its History, and Why We Use It (7) Web site. Visitors can learn how seasonal daylight changes caused the US to adapt daylight saving time as early as 1883 and how its use has progressed throughout the world. The last Web site, offered by the Punxsutawney Groundhog Club, contains information on the weather predictions of Punxsutawney Phil and is called Phil's Past Predictions (8). The site chronicles the "famous" groundhog's predictions, which historically have been used to determine the coming of spring by whether or not it sees its shadow. Visitors will find a list of every year's results, its accuracy, and various other links relating to the groundhog's exploits.

Brieske, Joel A.

2003-01-01

191

UCR Spring 2009 | 1 Spring2009Vol.4no.2  

E-print Network

A Disappearing landscape We all know water has an effect on plants, but what effect do plants have on the droughtUCR Spring 2009 | 1 Spring2009Vol.4no.2 Weathering Tough Economic Times A Disappearing landscape. The idea was that UCR would provide the land, infrastructure and expertise to plant a vegetable garden from

192

PAGOSA SPRINGS Conservation Action Plan  

E-print Network

PAGOSA SPRINGS Conservation Action Plan 2011 Update Plant Species of Focus: Pagosa skyrocket ..................................................................................................................................................... 233 Neely, B., P. Lyon, S. Panjabi, and B. Kuhn. 2011. Pagosa Springs: Conservation Action Plan 2011 led conservation action planning workshops with local partners in 2008 and 2010 to identify

193

Moser, PSY 954 Spring 2014  

E-print Network

Moser, PSY 954 Spring 2014 PSYCHOLOGY 954 COGNITIVE BEHAVIORAL THEORY SPRING 2014 !!Professor: Jason Moser, Ph.D. Office: 110B Psychology Building Phone: (517) 355-2159 Email: jmoser for a range of psychopathology across the lifespan. Students will be exposed to a variety of viewpoints

Liu, Taosheng

194

Pharmaceutical Care Clinic Spring 2009  

E-print Network

Pharmaceutical Care Clinic Spring 2009 Ambulatory Pharmaceutical Care Clinic [Phar 6230] and, Advanced Pharmaceutical Care Clinic [Phar 6217] Spring Semester 2009 Course Director: Teaching Assistants, Director - Peters Institute of Pharmaceutical Care WDH 3-160 Priya Bardal, Pharm.D. Computer documentation

Thomas, David D.

195

Schedule of Classes Spring 2012  

E-print Network

Raj Beri Scott C.James Political Science 88SB Controversies in College Athletics: Race, PoliticsSchedule of Classes Spring 2012 Spring Deadlines March 20 Last day to pay fees March 29 Classes (USIE) is an innovative program designed to provide a select group of juniors and seniors in the College

Grether, Gregory

196

PROGRESS REPORT SPRING CHINOOK SALMON  

E-print Network

existing populations, of spring chinook salmon (Oncorhynchus tshawytscha) not only in the Columbia River to determine feasibility of Introducing spring chinook salmon Into Wind River, Washington, has been underway on the Columbia River and transferred to Carson National Fish Hatchery at Wind River, Washington, for subsequent

197

Spring loaded locator pin assembly  

DOEpatents

This invention deals with spring loaded locator pins. Locator pins are sometimes referred to as captured pins. This is a mechanism which locks two items together with the pin that is spring loaded so that it drops into a locator hole on the work piece. 5 figs.

Groll, T.A.; White, J.P.

1998-03-03

198

Intermediate Accounting I Spring 2013  

E-print Network

Kimbro Intermediate Accounting I Spring 2013 1 ACCT 311 INTERMEDIATE ACCOUNTING I PIGT 305 - Spring framework underlying Financial Accounting and Financial Statements. To review the process of accumulating, identifying, measuring and recording financial information. To understand the accounting equation and its

Carter, John

199

Mammoth Hot Springs Online Tour  

NSDL National Science Digital Library

This Yellowstone National Park website offers an online tour of the Mammoth Hot Springs. Prominent hot springs and terraces are highlighted with photos and information concerning their cycles of activity. Similar tours of the Old Faithful area, the Norris Geyser Basin, the Fountain Paint Pots, and the Grand Canyon of Yellowstone are also available online.

Park, Yellowstone N.

200

Spring loaded thermocouple module  

DOEpatents

A thermocouple arrangement is provided for mounting in a blind hole of a specimen. The thermocouple arrangement includes a cup-like holder member, which receives an elongated thermal insulator, one end of which is seated at an end wall of the holder. A pair of thermocouple wires, threaded through passageways in the insulator, extend beyond the insulator member, terminating in free ends which are joined together in a spherical weld bead. A spring, held captive within the holder, applies a bias force to the weld bead, through the insulator member. The outside surface of the holder is threaded for engagement with the blind hole of the specimen. When the thermocouple is installed in the specimen, the spherical contact surface of the weld bead is held in contact with the end wall of the blind hole, with a predetermined bias force.

McKelvey, T.E.; Guarnieri, J.J.

1984-03-13

201

Spring loaded thermocouple module  

DOEpatents

A thermocouple arrangement is provided for mounting in a blind hole of a specimen. The thermocouple arrangement includes a cup-like holder member, which receives an elongated thermal insulator, one end of which is seated at an end wall of the holder. A pair of thermocouple wires, threaded through passageways in the insulator, extend beyond the insulator member, terminating in free ends which are joined together in a spherical weld bead. A spring, held captive within the holder, applies a bias force to the weld bead, through the insulator member. The outside surface of the holder is threaded for engagement with the blind hole of the specimen. When the thermocouple is installed in the specimen, the spherical contact surface of the weld bead is held in contact with the end wall of the blind hole, with a predetermined bias force.

McKelvey, Thomas E. (Solana Beach, CA); Guarnieri, Joseph J. (San Diego, CA)

1985-01-01

202

Chemical quality of Michigan streams  

USGS Publications Warehouse

Concentrations of chemical constituents of Michigan streams exhibit regional patterns that are primarily a function of geology and evapotranspiration. However, in some areas waste disposal by municipal and industrial organizations has altered the natural distribution and concentrations of dissolved material. Concentration and areal distribution of chemical constitutents were found to change very little from high spring to low summer flow conditions.

Wood, Warren W.

1970-01-01

203

DHS Summary Report -- Robert Weldon  

SciTech Connect

This summer I worked on benchmarking the Lawrence Livermore National Laboratory fission multiplicity capability used in the Monte Carlo particle transport code MCNPX. This work involved running simulations and then comparing the simulation results with experimental experiments. Outlined in this paper is a brief description of the work completed this summer, skills and knowledge gained, and how the internship has impacted my planning for the future. Neutron multiplicity counting is a neutron detection technique that leverages the multiplicity emissions of neutrons from fission to identify various actinides in a lump of material. The identification of individual actinides in lumps of material crossing our boarders, especially U-235 and Pu-239, is a key component for maintaining the safety of the country from nuclear threats. Several multiplicity emission options from spontaneous and induced fission already existed in MCNPX 2.4.0. These options can be accessed through use of the 6th entry on the PHYS:N card. Lawrence Livermore National Laboratory (LLNL) developed a physics model for the simulation of neutron and gamma ray emission from fission and photofission that was included in MCNPX 2.7.B as an undocumented feature and then was documented in MCNPX 2.7.C. The LLNL multiplicity capability provided a different means for MCNPX to simulate neutron and gamma-ray distributions for neutron induced, spontaneous and photonuclear fission reactions. The original testing on the model for implementation into MCNPX was conducted by Gregg McKinney and John Hendricks. The model is an encapsulation of measured data of neutron multiplicity distributions from Gwin, Spencer, and Ingle, along with the data from Zucker and Holden. One of the founding principles of MCNPX was that it would have several redundant capabilities, providing the means of testing and including various physics packages. Though several multiplicity sampling methodologies already existed within MCNPX, the LLNL fission multiplicity was included to provide a separate capability for computing multiplicity as well as including several new features not already included in MCNPX. These new features include: (1) prompt gamma emission/multiplicity from neutron-induced fission; (2) neutron multiplicity and gamma emission/multiplicity from photofission; and (3) an option to enforce energy correlation for gamma neutron multiplicity emission. These new capabilities allow correlated signal detection for identifying presence of special nuclear material (SNM). Therefore, these new capabilities help meet the missions of the Domestic Nuclear Detection Office (DNDO), which is tasked with developing nuclear detection strategies for identifying potential radiological and nuclear threats, by providing new simulation capability for detection strategies that leverage the new available physics in the LLNL multiplicity capability. Two types of tests were accomplished this summer to test the default LLNL neutron multiplicity capability: neutron-induced fission tests and spontaneous fission tests. Both cases set the 6th entry on the PHYS:N card to 5 (i.e. use LLNL multiplicity). The neutron-induced fission tests utilized a simple 0.001 cm radius sphere where 0.0253 eV neutrons were released at the sphere center. Neutrons were forced to immediately collide in the sphere and release all progeny from the sphere, without further collision, using the LCA card, LCA 7j -2 (therefore density and size of the sphere were irrelevant). Enough particles were run to ensure that the average error of any specific multiplicity did not exceed 0.36%. Neutron-induced fission multiplicities were computed for U-233, U-235, Pu-239, and Pu-241. The spontaneous fission tests also used the same spherical geometry, except: (1) the LCA card was removed; (2) the density of the sphere was set to 0.001 g/cm3; and (3) instead of emitting a thermal neutron, the PAR keyword was set to PAR=SF. The purpose of the small density was to ensure that the spontaneous fission neutrons would not further interact and induce fissions (i.e. th

Weldon, Robert A. [Los Alamos National Laboratory

2012-07-31

204

First-Year Sophomore Junior Senior Fall Spring Fall Spring Fall Spring Fall Spring  

E-print Network

(3) ChE 330 Fluid Mechanics (1) ChE 391A Professional Seminar (3) ChE 320 Kinetics (3 will fulfill the IE requirement. Last Rev. 2/26/14;TLP CHEMICAL ENGINEERING Recommended Credits 17 Credits 15 Credits 15 Credits (3) ENGIN 351 (3) ChE 120

Massachusetts at Amherst, University of

205

UCDscholarcast Series 8: (Spring 2013)  

E-print Network

UCDscholarcast Series 8: (Spring 2013) ________________________________ The Irish Memory General Editor: P.J. Mathews © UCDscholarcast #12;2 Margaret Kelleher Memory Studies and Famine Studies: Gender, Genealogy, History I'll begin with three quotations, which

206

UCDscholarcast Series 8: (Spring 2013)  

E-print Network

UCDscholarcast Series 8: (Spring 2013) ________________________________ The Irish Memory: Gender Politics and Making Space This lecture is about the role of Irish Abuse: Gender Politics and Making Space #12;3 point a

207

SPRING THING 2008: " Swamp Feast! "  

E-print Network

TuskawillaRd. McDonalds Exit 44 to 434 434 434 Winter Springs Town Center University Blvd UCF Downtown; Affiliates, Partners and Friends, Plus any high level UCF administrator wanting to feast on fine food

Van Stryland, Eric

208

Spring 2014 Showcasing Art & Design  

E-print Network

an additional venue to display their work on campus, and to highlight the depth and breadth of their talent to our visitors. On display this spring are 40 on canvas Charlie Sisson, Nude Graphite and ink Christi Swords, Emotions

Amin, S. Massoud

209

Advanced Policy Practice Spring 2014  

E-print Network

Advanced Policy Practice Spring 2014 SW 548-001 Instructor course that focuses on the theory and evidence-based skill sets of policy analysis, development, implementation, and change. The course focuses on policy

Grissino-Mayer, Henri D.

210

CCPSeminarSeries Spring Semester  

E-print Network

at Hamburg University Institute of Law and Economics] "Choice between Cartel and Merger" 01.02.2008 (week 3 10) Andreas Stephan [LAW & CCP] "Direct Settlement on EC Cartel Cases" #12;CCPSeminarSeries Spring

Feigon, Brooke

211

Accounting Information Systems Spring 2011  

E-print Network

MGT 3850N: Accounting Information Systems Spring 2011 Fill your international accounting the accounting profession and information systems. Understanding organizations' activities, processes, and information needs is of primary importance to those who practice in the accounting profession. Information

Seldin, Jonathan P.

212

SPRING 2011 + Solving climate change  

E-print Network

SPRING 2011 + Solving climate change one continent at a time + Supporting former child soldiers in Uganda Education improves global stability Studying abroad changes lives #12;CEHD.UMN.EDU 1 from the dean

Blanchette, Robert A.

213

Pink Book 2012 Spring Semester  

E-print Network

History 15 Journalism 17 Latin American Studies 17 Mexican American Studies 17 African American Women's Literature 6, 12, 23 Cult Movies and Gender Issues 19, 23 Index by Course Title 5 Spring Semester Courses 6 African and African American

Texas at Austin, University of

214

Spring Small Grains Area Estimation  

NASA Technical Reports Server (NTRS)

SSG3 automatically estimates acreage of spring small grains from Landsat data. Report describes development and testing of a computerized technique for using Landsat multispectral scanner (MSS) data to estimate acreage of spring small grains (wheat, barley, and oats). Application of technique to analysis of four years of data from United States and Canada yielded estimates of accuracy comparable to those obtained through procedures that rely on trained analysis.

Palmer, W. F.; Mohler, R. J.

1986-01-01

215

Recent Water Quality Trends in Florida's Springs  

E-print Network

Recent Water Quality Trends in Florida's Springs Gary L. Maddox, P.G. #12;"The springs throughout-Tropical State, 1870 "The bank was dense with magnolia and loblolly bay, sweet gum, and gray-barked ash. He went light" ­ Marjorie Stoneman Douglas #12;Springs and Florida History · Springs and water-filled sinkholes

Jawitz, James W.

216

WORLD DATA CENTER for Oceanography, Silver Spring  

E-print Network

0 WORLD DATA CENTER for Oceanography, Silver Spring CATALOGUE OF DATA and REPORT OF DATA EXCHANGE for Oceanography, Silver Spring 2003 World Data Center for Oceanography SilverSpring,Maryland ________ CHANGE for Oceanography, Silver Spring, during the period 1 January 2000 - 31 December 2001. It supplements the original

217

(July 19, 2012) Spring-Mass Oscillations  

E-print Network

spring obeys Hooke's law, and, if so, to calculate its spring constant. (2) To find a solution relating the spring force to the stretch of the spring. Compare your result to the "Hooke's Law" model, sometimes called the force constant, as in Hooke's Law? Based on your data and analysis, how "ideal" is your

Collins, Gary S.

218

Earlier spring in Seoul, Korea  

NASA Astrophysics Data System (ADS)

In the present study, long-term changes in the first bloom date of shrub and tree species in Seoul (126.56E, 37.34N), Korea were examined using historical observational data for the period 1922-2004 (83 years). The study focused on two shrub species, golden-bell (Forsythia koreana) and azalea (Rhododendron mucronulatum), and three tree species, cherry (Prunus yedoensis), peach (Prunus persica), and American locust (Robinia pseudoacacia). The annual-mean temperature has increased by about 2 C in Seoul over the 83 years analyzed. The temperature increase is significant during the winter and early spring and becomes less significant during late spring. As a result of this regional warming, all five species showed an advance in the first bloom date over this time period. The advanced date is particularly apparent in early-spring flowering species like golden-bell (-2.4 days 10-year-1), azalea (-2.4 days 10-year-1), cherry (-1.4 days 10-year-1), and peach (-1.4 days 10-year-1) as compared to late-spring flowering species like American locust (-0.5 days 10-year-1).The present results have demonstrated that the major factor for the determination of flower blooming is heat accumulation, i.e. a certain threshold of growing degree-days (GDD) index. In particular, early spring flowers were sensitive to the accumulation of warm temperature than late-spring flowers.

Ho, Chang-Hoi; Lee, E.-J.; Lee, I.; Jeong, S.-J.

2006-11-01

219

Herbicide contamination and dispersion pattern in lowland springs.  

PubMed

Herbicides reduce the diversity of flora and fauna in freshwater ecosystems and also contaminate groundwater due to leaching. Herbicide contamination can be a serious threat for all groundwater-dependent ecosystems (GDE), altering their chemical and biological quality. Successful management to protect GDE is dependent on detailed knowledge of the hydrogeological and hydrochemical features of the surrounding environment. We consider the possible diffuse contamination by herbicides of groundwater and of GDE as lowland springs, semi-artificial ecosystems with elevated biodiversity. The main objectives of the present work were thus: (1) to map herbicide contamination in lowland springs, (2) to evaluate the potential risk for biota and (3) to quantify the extent of the area from which the herbicide use can affect the water quality of lowland springs. In June and August 2009, nearly 23 springs within the Po River Plain (Northern Italy) were sampled and analyzed for five herbicides used to control weeds in maize. Hydrogeological properties, half-lives of the herbicides and their concentrations in both groundwater and springs were used to quantify the area from which the contamination could originate. Such evaluation was performed by means of GIS techniques. Terbuthylazine were the only herbicide found, together with its metabolite desethylterbuthylazine. In 16 out of 84 measurements, their concentrations were above the threshold for drinking water; however, they were always below the ecotoxicological end-points of aquatic flora and fauna. Spatial analyses reveal that the theoretical area from which herbicides can contaminate spring water is within a distance varying between a few and 1800 m. Our findings indicate that conservation plans should focus on the fields adjacent to or surrounding the springs and should address the optimization of irrigation practices, restoration of buffer strips, crop rotation and in general more sustainable agricultural practices in the proximity of these fragile GDE. PMID:23018054

Laini, Alex; Bartoli, Marco; Lamastra, Lucrezia; Capri, Ettore; Balderacchi, Matteo; Trevisan, Marco

2012-11-01

220

Computer Project 1. Nonlinear Springs Goal: Investigate the behavior of nonlinear springs.  

E-print Network

is not given by Hooke's Law but instead satisfies Fspring = ku + u3 , where k > 0 is the spring constant and is small but may be positive or negative and represents the "strength" of the spring ( = 0 gives Hooke's Law). The spring is called a hard spring if > 0 and a soft spring if

Petrosyan, Arshak

221

A Magazine for UNBC Alumni and Friends Spring 2011 Spring 2011 2Spring 20111  

E-print Network

.youtube.com/rickmercer For more information on UNBC's Bioenergy Project see page 3. UNBC & Social Media Spring 2011 2 #12;Spring. To read the story, see page 10. Inderbir Gill is the most decorated athlete in UNBC history. To read about at www.facebook.com/unbc.ca. How can you like, follow, and/or subscribe to UNBC in the world of social

Northern British Columbia, University of

222

Interpretation of the Hydrothermal System in Kirishima Hot Spring Village, Southern Kyushu, Japan  

NASA Astrophysics Data System (ADS)

It is very important to understand hydrothermal systems for sustainable utilizing of hot springs. However, in Japan, most of the large hot springs are located in national parks. Therefore, explorations such as geochemical, geophysical or boring surveys to interpret the hydrothermal systems had not been conducted enough. For this reason, hydrothermal systems of some hot springs in Japan have not been made clear even now. We constructed a conceptual model to interpret the hydrothermal system of Kirishima Hot Spring Village in Kirishima national park, southern part of Kyushu, Japan. There are many hot springs in Kirishima Hot Spring Village, such as Maruo, Hayashida, and Myoban hot spring areas. Kirishima Hot Spring Village is located in southwestern part of Kirishima volcanoes, like Onami-ike volcano, and the altitude of Maruo area is about 600 m and that of Hayashida and Myoban areas is about 800 m. In order to interpret the hydrothermal system in Kirishima Hot Spring Village, we need to understand three important factors which are heat source, hot spring water, and subsurface structure. In January 2011, Shinmoe-dake volcano of Kirishima volcanoes made a large scale eruption. Then, the pressure source of Kirishima volcanoes is expected to be located in about 2 km west of Onami-ike volcano and its estimated altitude is about -7 km (Kobayashi et al., 2011). We used this pressure source for our conceptual model as a heat source. Secondary, we tried to clarify the fluid of Kirishima Hot Spring Village by considering the chemical compositions of hot spring water. In addition, we made a Na-K-Mg diagram to estimate the reservoir temperature and find that spring water has reached equilibrium or not. As a result, we supposed that hot spring water of Maruo area is magmatic, and that of Hayashida and Myoban area is consisted of sulfate and meteoric water. Thirdly, we used gravity data, which is the result from previous study and our field survey, to make a residual Bouguer anomaly map and a vertical derivative map for understanding subsurface structure. These maps indicate that there are many faults in subsurface of Kirishima Hot Spring Village. Integrating the result from previous studies, our discussions, and gravity survey, we constructed a conceptual model of hydrothermal system in Kirishima Hot Spring Village. This conceptual model represents that the reservoir of Maruo, Hayashida, and Myoban areas is a presumed fault and attendant cracks. It also represents the formation process of the hot spring water.

Yonekura, Yusaku; Fujimitsu, Yasuhiro; Nishijima, Jun

2014-05-01

223

3-Helix Micelles Stabilized by Polymer Springs  

PubMed Central

Despite increasing demands to employ amphiphilic micelles as nanocarriers and nanoreactors, it remains a significant challenge to simultaneously reduce the particle size and enhance the particle stability. Complementary to covalent chemical bonding and attractive intermolecular interactions, entropic repulsion can be incorporated by rational design in the headgroup of an amphiphile to generate small micelles with enhanced stability. A new family of amphiphilic peptide-polymer conjugates is presented where the hydrophilic headgroup is composed of a 3-helix coiled-coil with poly(ethylene glycol) attached to the exterior of the helix bundle. When micelles form, the PEG chains are confined in close proximity and are compressed to act as a spring to general lateral pressure. The formation of 3-helix bundles determines the location and the directionalities of the force vector of each PEG elastic spring so as to slow down amphiphile desorption. Since each component of the amphiphile can be readily tailored, these micelles provide numerous opportunities to meet current demands for organic nanocarriers with tunable stability in life science and energy science. Furthermore, present studies open new avenues to use energy arising from entropic polymer chain deformation to self-assemble energetically stable single nanoscopic objects, much like repulsion that stabilizes bulk assemblies of colloidal particles. PMID:22731391

Dong, He; Shu, Jessica Y.; Dube, Nikhil; Ma, Yufei; Tirrell, Matthew V.; Downing, Kenneth H.; Xu, Ting

2014-01-01

224

1 Introduccin a Spring................................................................................................... 4 1.1 Qu es Spring?....................................................................................................... 4  

E-print Network

)............................................................................ 43 5 Introducci�n a MVC en Spring.................................................................................. 45 5.1 Procesamiento de una petici�n en Spring MVC............................................................... 52 6 Ejercicios de MVC en Spring

Escolano, Francisco

225

Trans-Pacific transport of reactive nitrogen and ozone to Canada during spring  

Microsoft Academic Search

We interpret observations from the Intercontinen- tal Chemical Transport Experiment, Phase B (INTEX-B) in spring 2006 using a global chemical transport model (GEOS- Chem) to evaluate sensitivities of the free troposphere above the North Pacific Ocean and North America to Asian anthro- pogenic emissions. We develop a method to use satellite ob- servations of tropospheric NO2 columns to provide timely

T. W. Walker; R. V. Martin; A. van Donkelaar; W. R. Leaitch; A. M. MacDonald; K. G. Anlauf; R. C. Cohen; T. H. Bertram; L. G. Huey; M. A. Avery; A. J. Weinheimer; F. M. Flocke; D. W. Tarasick; A. M. Thompson; D. G. Streets; X. Liu

2010-01-01

226

Biochemical Comparison between Radon Effects and Thermal Effects on Humans in Radon Hot Spring Therapy  

Microsoft Academic Search

Radon therapy\\/Radon effect\\/Thermal effect\\/Antioxidant\\/Immunity. The radioactive and thermal effects of radon hot spring were biochemically compared under a sauna room or hot spring conditions with a similar chemical component, using the parameters that are closely involved in the clinic for radon therapy. The results showed that the radon and thermal therapy enhanced the antioxidation functions, such as the activities of

Kiyonori YAMAOKA; Fumihiro MITSUNOBU; Katsumi HANAMOTO; Koichi SHIBUYA; Shuji MORI; Yoshiro TANIZAKI; Katsuhiko SUGITA

2004-01-01

227

Neutron activation analysis of the rare earth elements in Nasu hot springs.  

PubMed

Eleven rare earth elements (lanthanum, cerium, neodymium, samarium, europium, gadolinium, terbium, holmium, thulium, ytterbium and lutetium) in hot spring waters and sinter deposits in the Nasu area were determined by the neutron activation method. The rare earth elements in hot spring water were pre-concentrated in ferric hydroxide precipitate and neutron-irradiated. The rare earth elements were chemically separated into lighter and heavier groups and the activity of each group was measured with a Ge(Li) detector. Distribution of the rare earth elements between the hot spring water and the sinter deposit was also discussed. PMID:684229

Ikeda, N; Takahashi, N

1978-06-01

228

History of Art Course Projections [tentative; subject to change] Instructor Spring 2012 Fall 2012 Spring 2013 Fall 2013 Spring 2014  

E-print Network

History of Art Course Projections [tentative; subject to change] Instructor Spring 2012 Fall 2012 Spring 2013 Fall 2013 Spring 2014 Aksamija, Nadja 110 Intro to Western Art Sabbatical Leave 110 Intro to Western Art 233 Art & Culture Italian Baroque 224 16C Italian Art/Architecture 221 Early Renaissance Art

Devoto, Stephen H.

229

Sustainable Spring/Summer 2013  

E-print Network

Sustainable Behavior Issue 28 Spring/Summer 2013 The Kentucky Institute for the Environment and Sustainable Development Walk & Bike Conservewater Reuse & Re cycle Plantnativespecies InstallCFClightbulbs #12 The Kentucky Institute for the Environment and Sustainable Development (KIESD) was created in July 1992 within

230

Chemistry Department Colloquium: Spring, 2012  

E-print Network

Chemistry Department Colloquium: Spring, 2012 Friday, March 16; 3:30 Seminar Hall (room 1315 Chemistry) Lost in Translation: How Regulators Use Science and How Scientists Can Help Bridge Gaps Stephanie to combine her Chemistry background with a legal education to improve the use of science in environmental

Sheridan, Jennifer

231

Finding Spring on Planet X  

ERIC Educational Resources Information Center

For a given orbital period and eccentricity, we determine the maximum time lapse between the winter solstice and the spring equinox on a planet. In addition, given an axial precession path, we determine the effects on the seasons. This material can be used at various levels to illustrate ideas such as periodicity, eccentricity, polar coordinates,

Simoson, Andrew J.

2007-01-01

232

UCDscholarcast Series 7 (Spring 2013)  

E-print Network

move around the Irish Sea, its borders seem as 6luid as its history. HowUCDscholarcast Series 7 (Spring 2013) The Literatures and Cultures of the Irish;2 Fiona Stafford Writing around the Irish Sea: Inlets, outlets, Firths and Mouths

233

Community Needs Assessment, Spring 1982.  

ERIC Educational Resources Information Center

In Spring 1982, a districtwide survey was conducted by Cerritos College (CC) to assess the educational needs of the surrounding community. Residents were asked to provide demographic information and respond to questions about their awareness of the college, their perception and evaluation of various CC roles, and their preferences for courses and

Dennis-Rounds, Jan

234

Student Survey: Exit Spring '80.  

ERIC Educational Resources Information Center

A survey was conducted by Cerritos College (CC) to: (1) gather demographic and evaluative data about the students who left CC in spring 1980; (2) compare graduates' and non-graduates' evaluations of instructional and student services; (3) evaluate how well CC prepared its students and how highly students valued these areas of preparation; and (4)

Dennis-Rounds, Jan

235

NOVA Spring 2000 Teacher's Guide.  

ERIC Educational Resources Information Center

This teacher's guide complements six programs that aired on the Public Broadcasting System (PBS) in the spring of 2000. Programs include: (1) "Lost on Everest"; (2) "Lost Tribes of Israel"; (3) "Crocodiles"; (4) "Lost at Sea: The Search for Longitude"; (5) "Global Warming"; and (6) "Secrets of Lost Empires". It provides activity set-ups related to

Colombo, Luann; Gregoire, Tanya; Ransick, Kristina; Sammons, Fran Lyons; Sammons, James

236

spring 2013 UCF Continuing Education  

E-print Network

facilities, or via several distance learning options. cOrpOrAtE EducAtiOn partnering with departmentsspring 2013 UCF Continuing Education Bringing UCF to You program catalog University of Central HEALTH LIFE & LEISURE TEST PREPARATION #12;UCf ContinUing edUCation 2 spring 2013 Discover distinctive

Van Stryland, Eric

237

Open-Coil Retraction Spring  

PubMed Central

Sliding mechanic has become a popular method for space closure with developments in preadjusted edgewise appliance. Furthermore, various space closing auxiliaries have been developed and evaluated extensively for their clinical efficiency. Their effectiveness enhanced with optimum force magnitude and low-load deflection rate (LDR)/force decay. With the advent of NiTi springs in orthodontics, LDRs have been markedly reduced. For use of NiTi, clinician has to depend upon prefabricated closed coil springs. Open Coil Retraction Spring (OCRS) is developed utilizing NiTi open-coil spring for orthodontic space closure. This paper describes fabrication and clinical application of OCRS which have number of advantages. It sustains low LDR with optimum force magnitude. Its design is adjustable for desired length and force level. It is fail-safe for both activation and deactivation (i.e., it cannot be over activated, and decompression limit of open coil is also controlled by the operator, resp.). A possibility to offset the OCRS away from mucosa helps to reduce its soft-tissue impingement. PMID:22567437

Vibhute, Pavankumar Janardan

2011-01-01

238

SPRING 2013 Empowering the Dream  

E-print Network

SPRING 2013 CAPITAL GAINS Empowering the Dream campaign draws to a close June 30, page 20 PATENT alumna is named Tennessee Teacher of the Year, page 34 CLASS ACT #12;#12;From the President University even more challenging because of a hearing impairment. Class Act by Laura Fenton A U of M alumna

Dasgupta, Dipankar

239

AGRICULTURAL WINTER/SPRING 2009  

E-print Network

of the Lower Peninsula," says MAES Director Steve Pueppke. "The west side of the state is home to a thrivingMICHIGAN AGRICULTURAL EXPERIMENT STATION WINTER/SPRING 2009 VOL. 26 NO. 4/VOL. 27 NO.1 utures MAES to cherries in Traverse City, and from wine and juice grapes on the west side of the state to dry beans

240

Faculty Research Profiles Spring 2013  

E-print Network

Faculty Research Profiles Spring 2013 #12;Education BS 1975, University of Roorkee, India MS 1977, University of Delaware PhD 1979, University of Delaware Research Interests Dr. Agrawal's research interests understanding of the catalyst behavior, which has been a central theme of his research efforts. More recent

Sherrill, David

241

Spring, 1980, DECUS symposium review  

Microsoft Academic Search

The Digital Equipment Computer Users Society (DECUS) holds biannual symposia where its membership and the host company can exchange ideas, problems, and solutions. This report by the newly formed DECUS Local User Group at LLL collects information gathered at the Spring '80 symposium in Chicago on April 22-25. Information is presented for the following special interest groups (SIGs): RSX\\/IAS SIG,

M. J. Allen; J. M. Duffy; W. M. McDonald; J. L. Oppenheimer; J. J. Brandt; C. W. Grant; D. W. OBrien; A. L. VanLehn

1980-01-01

242

University of Oregon 2009-Spring  

E-print Network

therapist. ­American Association for Marriage and Family Therapy (AAMFT) Glossary of Terms, pg. 17, 19901 University of Oregon 2009-Spring Psychology 473-573 Marital and Family Therapies Instructor: John K. Miller, Ph.D., LMFT Program Clinical Director Couples and Family Therapy Program, College

Lockery, Shawn

243

University of Connecticut Spring 2011  

E-print Network

University of Connecticut Spring 2011 SMArtSync Medication Reconciliation CSE 5095 Project ReportSync application, which is medication reconciliation tool we developed for the SMArt platform. The goal of SMArt is dedicated to introducing the SMArt (Substitutable Medical Apps, reusable technologies)1 Platform

Demurjian, Steven A.

244

Spring 2014 Cracking the code  

E-print Network

Spring 2014 Cracking the code Regenerating islet cells may lead to a cure for diabetes much of their energy on minimizing the impact of diabetes. Because people with diabetes do not have--physicians and scientists have found ways to help them manage their blood sugar levels through lifestyle changes

Minnesota, University of

245

Beauty, Eros, Death Spring 2012  

E-print Network

obsession. And why do works of art so often link erotic love to tragic death? Do beauty and eros point, Eros, Death KHC XL 102 Spring 2012 Wednesdays/Fridays 9:00am­10:30am Professor William Waters Office short work of modern literature at the center of this seminar's inquiry into beauty, desire

Goldberg, Bennett

246

Spring 2011 YOGA & PILATES PROGRAM  

E-print Network

Spring 2011 YOGA & PILATES PROGRAM Jeffrey Duval Jeffrey's first glimpse of yoga sparked of the rehabilitation process Colleen first came to Pilates. Not only did the Pilates program get her back on her feet, she resumed a full dance career for the following 10 years. Colleen is certified in "Classic Pilates

Grishok, Alla

247

Spring 2014 Organization Development & Training  

E-print Network

Spring 2014 Organization Development & Training Catalog University of Central Florida Office of Organization Development & Training 3280 Progress Drive Orlando, FL 32826-2912 (407) 823-0440 February 7, 2014 Volume 2, Number 3 The current Catalog is published at http://www.hr.ucf.edu/web/training

Wu, Shin-Tson

248

CAS Alumni & Development Spring 2007  

E-print Network

on the topic. But not as many people are interested in journals or scholarly monographs with such narrow focus or Perish [online] This spring fewer journals will reside on the University of Oregon libraries' shelves to publish scholarly work. Some have embraced electronic media while others are wondering ... Is going

Oregon, University of

249

Wetland Wildlife Ecology Spring 2012  

E-print Network

1 WIS 4443C 4 credits Wetland Wildlife Ecology Spring 2012 Course Objectives Lecture and Laboratory of major wetland types the types of animals that use wetlands, their abundance and distribution within to identify representatives of wetland wildlife groups (birds, amphibians, mammals) Course Description

Watson, Craig A.

250

AIMS State Report, Spring 2000.  

ERIC Educational Resources Information Center

This document presents school and district information on the spring 2000 administration of the Arizona Instrument To Measure Standards (AIMS) organized by grade and alphabetically by district and school. Grade level is noted at the top of each page. AIMS scores for each subject are organized in columns under each subject area heading. Information

Arizona State Dept. of Education, Phoenix.

251

NOVA Spring 1999 Teacher's Guide.  

ERIC Educational Resources Information Center

This teacher's guide complements six programs that aired on the Public Broadcasting System (PBS) in the spring of 1999. Programs include: (1) "Surviving AIDS"; (2) "Secrets of Making Money"; (3) "Escape!: Fire"; (4) "Escape!: Car Crash"; (5) "Volcanoes of the Deep"; and (6) "Odyssey of Life: Part 1. The Ultimate Journey". It provides activity

Colombo, Luann; Ransick, Kristina; Recio, Belinda

252

In this issue... SPRING -SUMMER 2012  

E-print Network

In this issue... SPRING - SUMMER 2012 www.fitrec.northwestern.edu Vegan and gluten-free diets page Gluten-free and Vegan dieting The ins and outs of Interval Training Sailing Services Spring is in the air

Shull, Kenneth R.

253

49 CFR 229.65 - Spring rigging.  

Code of Federal Regulations, 2012 CFR

...Transportation 4 2012-10-01 2012-10-01 false Spring rigging. 229.65 Section 229.65 Transportation Other...Safety Requirements Suspension System 229.65 Spring rigging. (a) Protective construction or safety hangers...

2012-10-01

254

49 CFR 229.65 - Spring rigging.  

Code of Federal Regulations, 2010 CFR

...Transportation 4 2010-10-01 2010-10-01 false Spring rigging. 229.65 Section 229.65 Transportation Other...Safety Requirements Suspension System 229.65 Spring rigging. (a) Protective construction or safety hangers...

2010-10-01

255

49 CFR 229.65 - Spring rigging.  

Code of Federal Regulations, 2013 CFR

...Transportation 4 2013-10-01 2013-10-01 false Spring rigging. 229.65 Section 229.65 Transportation Other...Safety Requirements Suspension System 229.65 Spring rigging. (a) Protective construction or safety hangers...

2013-10-01

256

49 CFR 229.65 - Spring rigging.  

Code of Federal Regulations, 2011 CFR

...Transportation 4 2011-10-01 2011-10-01 false Spring rigging. 229.65 Section 229.65 Transportation Other...Safety Requirements Suspension System 229.65 Spring rigging. (a) Protective construction or safety hangers...

2011-10-01

257

14 CFR 23.687 - Spring devices.  

Code of Federal Regulations, 2013 CFR

...devices. The reliability of any spring device used in the control system must be established by tests simulating service conditions unless failure of the spring will not cause flutter or unsafe flight...

2013-01-01

258

14 CFR 23.687 - Spring devices.  

Code of Federal Regulations, 2011 CFR

...devices. The reliability of any spring device used in the control system must be established by tests simulating service conditions unless failure of the spring will not cause flutter or unsafe flight...

2011-01-01

259

14 CFR 23.687 - Spring devices.  

Code of Federal Regulations, 2010 CFR

...devices. The reliability of any spring device used in the control system must be established by tests simulating service conditions unless failure of the spring will not cause flutter or unsafe flight...

2010-01-01

260

14 CFR 23.687 - Spring devices.  

Code of Federal Regulations, 2012 CFR

...devices. The reliability of any spring device used in the control system must be established by tests simulating service conditions unless failure of the spring will not cause flutter or unsafe flight...

2012-01-01

261

14 CFR 23.687 - Spring devices.  

...devices. The reliability of any spring device used in the control system must be established by tests simulating service conditions unless failure of the spring will not cause flutter or unsafe flight...

2014-01-01

262

Mechanical energy storage in carbon nanotube springs  

E-print Network

Energy storage in mechanical springs made of carbon nanotubes is a promising new technology. Springs made of dense, ordered arrays of carbon nanotubes have the potential to surpass both the energy density of electrochemical ...

Hill, Frances Ann

2011-01-01

263

Spring 2012 www.veteran.uci.edu  

E-print Network

, Employment, Healthcare and Education. Graduating Veterans were then recognized and Military Student in their communities." Benefits include: Employment, Job Readiness, Family Services, Housing, FoodSpring 2012 www.veteran.uci.edu Spring 2012 In this Issue: Veteran Appreciation Dinner

Barrett, Jeffrey A.

264

Water Resource Value Monitoring for Blue Spring and Blue Spring Run, Volusia County, Florida.  

National Technical Information Service (NTIS)

The St. Johns River Water Management District (District) has adopted by rule a minimum flow regime (MFR) for Blue Spring and Blue Spring Run (Blue Spring MFR) in Volusia County, Florida. The Blue Spring MFR will support the protection of the use of Blue S...

2009-01-01

265

Erera, Spring School 2004 Transportation Security  

E-print Network

and port facilities " Air cargo " Hazardous materials transport #12;Erera, Spring School 2004 Trade growth-haul transport by water, rail, and air #12;Erera, Spring School 2004 Importance of trade to U.S. economy 0 1Erera, Spring School 2004 Transportation Security Alan Erera and Chelsea C. White III Industrial

Erera, Alan

266

Native spring investigation data report. Final report  

Microsoft Academic Search

A series of native springs in the Indian Wells Valley were investigated by the Naval Air Weapons Station China Lake Environmental Project Office during FY 94 to gather baseline geophysical and geological data. Thirty-one native springs located in the north and south test ranges at China Lake were sampled for water quality. Air photographs of each spring site were taken

T. Bilhorn; J. Maas; S. Dickey; M. Stoner

1995-01-01

267

Effects of Nutrients on Spring Ecosystems  

Microsoft Academic Search

Summary The relationship between nutrients and spring ecosystem structure and function primarily focuses on the state-wide increase in spring nitrate concentrations derived from anthropogenic sources and the concurrent observed visual decline of these ecosystems. However, the apparent correlation between increased nitrate loading and declining aesthetic appearance of spring ecosystems has only anecdotally provided evidence for a causative relationship. Organism-level studies,

Robert L. Knight; Sky K. Notestein

268

ISRP Retrospective Report LSRCP spring Chinook Program  

E-print Network

spring/summer Chinook fall Chinook steelhead Sampling Juvenile Salmon, Tucannon River #12;LSRCP spring-origin Chinook salmon in the Imnaha River #12;Supplementation Effectiveness Imnaha River BACI Analysis ­ (BeforeISRP Retrospective Report LSRCP spring Chinook Program Dr. Eric J. Loudenslager Northwest Power

269

Frameworks de desarrollo de Aplicaciones -Spring  

E-print Network

. Acceso a datos apuntes traspas ejercicios plantillas 3. Spring MVC apuntes traspas ejercicios plantillas 4. Aplicaciones AJAX y REST con Spring MVC apuntes traspas ejercicios Frameworks de desarrollo de;5. Validaci�n e internacionalizaci�n en Spring MVC apuntes traspas ejercicios plantillas 6. Acceso remoto

Escolano, Francisco

270

UNIVERSITY INTERNATIONAL CLUB SPRING PROGRAMME 2012  

E-print Network

u nivers ityinter nationa l c l u b UNIVERSITY INTERNATIONAL CLUB SPRING PROGRAMME 2012 FOUNDED IN 1998 AARHUS UNIVERSITYAU #12;UNIVERSITY INTERNATIONAL CLUB SPRING PROGRAMME 20122 With the start of the new year 2012, we at the University International Club (UIC) are presenting our Spring Programme

271

UNIVERSITY INTERNATIONAL CLUB SPRING PROGRAMME 2012  

E-print Network

u nivers ityinter nationa l c l u b UNIVERSITY INTERNATIONAL CLUB SPRING PROGRAMME 2012 FOUNDED IN 1998 AARHUS UNIVERSITYAU #12;UNIVERSITY INTERNATIONAL CLUB SPRING PROGRAMME 20122 UNIVERSITY INTERNATIONAL CLUB SPRING PROGRAMME 2012 3 With the start of the new year 2012, we at the University

272

Abnormal Psychology, Spring 2008 1 Psychology 350  

E-print Network

Abnormal Psychology, Spring 2008 1 Psychology 350 Abnormal Psychology Spring 2008 N-101 Tuesdays 4 psychology. By the end of the semester, students will be able to: · Discuss extant models of abnormal in Foundation II.B., Social and Behavioral Sciences required." #12;Abnormal Psychology, Spring 2008 2 Course

Gallo, Linda C.

273

1. NORTHWEST FRONT, SOUTHWEST SIDE (SPRING HOUSE IN FOREGROUND; BATH ...  

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

1. NORTHWEST FRONT, SOUTHWEST SIDE (SPRING HOUSE IN FOREGROUND; BATH HOUSE AT REAR) (4 x 5 negative; 5 x 7 print) - Salt Sulphur Springs, Spring House, U.S. Route 219, Salt Sulphur Springs, Monroe County, WV

274

76 FR 59998 - Notice of Intent To Suspend the Postharvest Chemical Use Survey and All Associated Reports  

Federal Register 2010, 2011, 2012, 2013

...after harvesting, how the chemicals are applied, when they...and 2009 the Postharvest Chemical Use survey was suspended...not publish a Postharvest Chemical Use report in the Spring of 2012 unless there is a change in the anticipated...

2011-09-28

275

Hot Springs Metropolitan Planning Organization 2030 Long Range Transportation Plan  

E-print Network

Hot Springs Area Metropolitan Planning Organization 100 Broadway Terrace Hot Springs, Arkansas 71901 Adopted November 3, 2005 HSA-MPO 2030 LRTPii Participating Agencies Garland County Hot... Spring County City of Hot Springs City of Mountain Pine Hot Springs Village The Greater Hot Springs Chamber of Commerce The Arkansas State Highway and Transportation Department In Cooperation With United States Department of Transportation...

Hot Springs Metropolitan Planning Organization

2005-11-03

276

CHEMISTRY 365 SYLLABUS Spring 2014  

E-print Network

Tuesday 12-2:50 Wednesday 3-5:50 Thursday, 9-11:50 Date Jan 14-16 Cyalume: Chemiluminescence Jan 21; Distillation; NMR Feb 11-13 Snow-Day Makeup/No Lab Feb 18-20 Alcohol Unknown (NMR)/Synthesis of Aspirin Feb 25 Condensation Mar 18-20 No Lab. Spring Break. Mar 25-27 Multistep Synthesis Module Week One Apr 1-3 Multistep

Jasperse, Craig P.

277

CHEMICAL, BIOLOGICAL AND NUCLEAR TERRORISM/WARFARE  

E-print Network

Studies, December 1985, v. 130, no. 4, p. 15-19. Adelman, Kenneth. "Chemical Weapons: Restoring the Taboo Chemical and Biological Weapons Treaties: Is the Constitution a Stumbling Block?" Airpower Journal, 1994-First Century: Threats and Responses" DePaul Business Law Journal, Fall 1999 / Spring, 2000, v. 12, no. 1/2, 59

278

A silicified bird from Quaternary hot spring deposits  

PubMed Central

The first avian fossil recovered from high-temperature hot spring deposits is a three-dimensional external body mould of an American coot (Fulica americana) from Holocene sinters of Yellowstone National Park, Wyoming, USA. Silica encrustation of the carcass, feathers and colonizing microbial communities occurred within days of death and before substantial soft tissue degradation, allowing preservation of gross body morphology, which is usually lost under other fossilization regimes. We hypothesize that the increased rate and extent of opal-A deposition, facilitated by either passive or active microbial mediation following carcass colonization, is required for exceptional preservation of relatively large, fleshy carcasses or soft-bodied organisms by mineral precipitate mould formation. We suggest physico-chemical parameters conducive to similar preservation in other vertebrate specimens, plus distinctive sinter macrofabric markers of hot spring subenvironments where these parameters are met. PMID:16024344

Channing, Alan; Schweitzer, Mary Higby; Horner, John R; McEneaney, Terry

2005-01-01

279

A silicified bird from Quaternary hot spring deposits.  

PubMed

The first avian fossil recovered from high-temperature hot spring deposits is a three-dimensional external body mould of an American coot (Fulica americana) from Holocene sinters of Yellowstone National Park, Wyoming, USA. Silica encrustation of the carcass, feathers and colonizing microbial communities occurred within days of death and before substantial soft tissue degradation, allowing preservation of gross body morphology, which is usually lost under other fossilization regimes. We hypothesize that the increased rate and extent of opal-A deposition, facilitated by either passive or active microbial mediation following carcass colonization, is required for exceptional preservation of relatively large, fleshy carcasses or soft-bodied organisms by mineral precipitate mould formation. We suggest physico-chemical parameters conducive to similar preservation in other vertebrate specimens, plus distinctive sinter macrofabric markers of hot spring subenvironments where these parameters are met. PMID:16024344

Channing, Alan; Schweitzer, Mary Higby; Horner, John R; McEneaney, Terry

2005-05-01

280

Computer Aided Chemical Engineering CHEN 3600 Spring 2010 Course Outcomes  

E-print Network

, descriptive statistics, discrete and continuous random variables, probability distribution functions, cumulative distribution functions). 11. Apply discrete distribution functions (Bernoulli, binomial, Poisson arguments. 10. Explain and employ probability concepts (including expectation, probability, likelihood

Ashurst, W. Robert

281

Slightly thermal springs and non-thermal springs at Mount Shasta, California: Chemistry and recharge elevations  

USGS Publications Warehouse

Temperature measurements, isotopic contents, and dissolved constituents are presented for springs at Mount Shasta to understand slightly thermal springs in the Shasta Valley based on the characteristics of non-thermal springs. Non-thermal springs on Mount Shasta are generally cooler than mean annual air temperatures for their elevation. The specific conductance of non-thermal springs increases linearly with discharge temperature. Springs at higher and intermediate elevations on Mount Shasta have fairly limited circulation paths, whereas low-elevation springs have longer paths because of their higher-elevation recharge. Springs in the Shasta Valley are warmer than air temperatures for their elevation and contain significant amounts of chloride and sulfate, constituents often associated with volcanic hydrothermal systems. Data for the Shasta Valley springs generally define mixing trends for dissolved constituents and temperature. The isotopic composition of the Shasta Valley springs indicates that water fell as precipitation at a higher elevation than any of the non-thermal springs. It is possible that the Shasta Valley springs include a component of the outflow from a proposed 210??C hydrothermal system that boils to supply steam for the summit acid-sulfate spring. In order to categorize springs such as those in the Shasta Valley, we introduce the term slightly thermal springs for springs that do not meet the numerical criterion of 10??C above air temperature for thermal springs but have temperatures greater than non-thermal springs in the area and usually also have dissolved constituents normally found in thermal waters. ?? 2002 Elsevier Science B.V. All rights reserved.

Nathenson, M.; Thompson, J.M.; White, L.D.

2003-01-01

282

Spring  

NSDL National Science Digital Library

The equation of motion of a one-dimensional simple harmonic oscillator is x(t) = Acos(wt+f) where A is the amplitude, omega is the angular frequency, and phi is the phase. Verify the correctness of these equations for the maximum speed and maximum acceleration by measuring the angular frequency of the oscillator and the amplitude of the oscillator, calculating the maximum speed and acceleration, and comparing these values to those found on the graphs.

Christian, Wolfgang; Belloni, Mario

2008-02-19

283

Audiomagnetotelluric data from Spring, Cave, and Coyote Spring Valleys, Nevada  

USGS Publications Warehouse

Audiomagnetotelluric (AMT) data along four profiles in Spring, Cave, and Coyote Spring Valleys are presented here. The AMT method is used to estimate the electrical resistivity of the earth over depth ranges of a few meters to greater than one kilometer. This method is a valuable tool for revealing subsurface structure and stratigraphy within the Basin and Range of eastern Nevada, therefore helping to define the geohydrologic framework in this region. We collected AMT data using the Geometrics StrataGem EH4 system, a four-channel, natural and controlled- source tensor system recording in the range of 10 to 92,000 Hz. To augment the low signal in the natural field, an unpolarized transmitter comprised of two horizontal-magnetic dipoles was used from 1,000 to 70,000 Hz. Profiles were 1.4 - 12.6 km in length with station spacing of 100-400 m. Data were recorded with the electrical (E) field parallel to and perpendicular to the regional geologic strike direction. Station locations and sounding curves, showing apparent resistivity, phase data, and coherency data, are presented here.

McPhee, Darcy K.; Chuchel, Bruce A.; Pellerin, Louise

2006-01-01

284

My Physics Labs - Single Spring  

NSDL National Science Digital Library

This simulation displays the motion of a simple harmonic oscillator. The user can adjust the physical parameters in the problem including mass, spring stiffness, and damping. Graphs can be plotted relating any two dynamical quantities: position, velocity, acceleration, energy (potential, kinetic, and total), and the work done by damping. Bar graphs showing the energy are displayed in a separate area. The web page also gives and outline of the physics, the mathematical models used, and the numerical methods for the simulation. This is one of a group of simulations of classical systems.

Neumann, Erik

2006-04-19

285

Boston University Physics Applets: Work by Springs  

NSDL National Science Digital Library

This web page is an interactive physics simulation relating to work done by a spring. As a spring is stretched to its elastic limit, the movement is recorded on Force vs. Position and Work vs. Position graphs. Users may view the graphs in stepped motion to see how the position of the spring is related to the amount of work done. This item is part of a collection of similar simulation-based activities developed for students of introductory physics.

Duffy, Andrew

2008-08-22

286

A Spring, Hooke's Law, and Archimedes' Principle  

Microsoft Academic Search

A mass on a spring is a simple and inexpensive device that can be used to demonstrate many important physics concepts. Almost all standard introductory physics lab manuals include at least one or two experiments with a spring.1,2 Most of these experiments explore Hooke's law and simple harmonic motion. We would like to suggest another simple ``spring-based'' experiment that we

Irina Struganova

2005-01-01

287

Explorations in Fall Year 1 Spring  

E-print Network

-2013 Fall Year 4 SpringFall Year 3 SpringFall Year 2 Spring Free Elective(3) CS2321(3) Data Structures CS Elective(3) HASS (3000 or higher) Elective(3) Technical Elective(3/4)** CS3141(3) Team Software Project(3/4)** CS3000(2) Ethical and Social Aspects of Comp. CS4xxx (3/4)** CS 3141 Lab Science (4/5) Lab

288

Native spring investigation data report. Final report  

SciTech Connect

A series of native springs in the Indian Wells Valley were investigated by the Naval Air Weapons Station China Lake Environmental Project Office during FY 94 to gather baseline geophysical and geological data. Thirty-one native springs located in the north and south test ranges at China Lake were sampled for water quality. Air photographs of each spring site were taken for geohydrologic interpretation, and the location of each spring was surveyed for its aerial resistivity properties and geologic mapping. These data are presented in this final report.

Bilhorn, T.; Maas, J.; Dickey, S.; Stoner, M.

1995-03-01

289

Athletic Training Coordinator Hometown: Colorado Springs, CO  

E-print Network

WHO WE ARE Gaby Bell Athletic Training Coordinator Hometown: Colorado Springs, CO Certifications Athletic Training Graduate Assistant Jonathan Hodapp Student Athletic Trainer Mike Carlson Student Athletic

Van Stryland, Eric

290

Operation safe removal: Spring Valley, Washington, DC analytical results: January-February 1993. Final report, January-February 1993  

SciTech Connect

On 5 January 1993, laboratory debris/soils and munitions from WWI chemical warfare (CW) agent studies at American University were discovered in the Spring Valley development in Washington, D.C. Ninety-eight separate items/samples, including nine intact munitions, were packaged and delivered by the Technical Escort Unit (TEU) to the U.S. Army Edgewood Research, Development and Engineering Center for chemical characterization. This report summarizes the analytical results obtained on the samples submitted from the Spring Valley site. It identifies the various samples delivered for analysis and describes the analytical methodology used to identify and confirm the chemicals contained in each sample. Spectra for each sample in which chemicals were identified are included in the appendices.... American University, Operation Safe Removal, Spring Valley, Washington, D.C..

Brooks, M.E.; Beaudry, W.T.; Bossle, P.C.; Herd, R.E.; Lochner, J.M.

1993-07-01

291

Force of an Actin Spring  

PubMed Central

Cellular movements are produced by forces. Typically, cytoskeletal proteins such as microtubules and actin filaments generate forces via polymerization or in conjunction with molecular motors. However, the fertilization of a Limulus polyphemus egg involves a third type of actin-based cellular enginea biological spring. During the acrosome reaction, a 60-?m long coiled and twisted bundle of actin filaments straightens and extends from a sperm cell, penetrating the vitelline layer surrounding the egg. A subtle overtwist of 0.2/subunit underlies the mechanochemical basis for the extension of this actin spring. Upon calcium activation, this conformational strain energy is converted to mechanical work, generating the force required to extend the bundle through the vitelline layer. In this article, we stall the extension of the acrosome bundle in agarose gels of different concentrations. From the stall forces, we estimate a maximum force of 2 nN and a puncturing pressure of 1.6 MPa. We show the maximum force of extension is three times larger than the force required to puncture the vitelline layer. Thus, the elastic strain energy stored in the acrosome bundle is more than sufficient to power the acrosome reaction through the egg envelope. PMID:17351007

Shin, Jennifer H.; Tam, Barney K.; Brau, Ricardo R.; Lang, Matthew J.; Mahadevan, L.; Matsudaira, Paul

2007-01-01

292

Second memorandum on the flow of Aqua Caliente Spring after road construction at Palm Springs, California  

USGS Publications Warehouse

This memorandum was prepared at the request of Henry Harris, Acting Area Director, Bureau of Indian Affairs, Sacramento, Calif., to report on recent conditions at the Agua Caliente Spring, Palm Springs, Calif., and to suggest further possibilities for restoring the spring discharge to its pre-road-construction condition.

Poland, J.F.; Dutcher, L.C.

1953-01-01

293

of the SpringS: Astrobiology in Yellowstone National Park --Powerpoint  

E-print Network

Science of the SpringS: Astrobiology in Yellowstone National Park -- Powerpoint Astrobiology with this Powerpoint, but the direct reading questions would need to be modified for use with this presentation (since the presentation does not go into as much detail as the Science of the Springs booklet). exteNsiONs This Powerpoint

Maxwell, Bruce D.

294

Yield response of spring wheat to increasing densities of spring oats and various forms  

E-print Network

Agronomy Yield response of spring wheat to increasing densities of spring oats and various forms by interference from spring oat (cv Selma), considered as a weed, were estimated in field studies on post for each of the 3 experimental years. Wheat yield losses were significantly greater on oat-infested plots

Paris-Sud XI, Université de

295

Experto Universitario Java Enterprise Sesin 3: Spring MVC  

E-print Network

Experto Universitario Java Enterprise Spring Sesi�n 3: Spring MVC #12;Experto Universitario Java Enterprise Spring � 2012-2013 Depto. Ciencia de la Computaci�n e IA Spring MVC Indice � Procesamiento de una Computaci�n e IA Spring MVC Procesamiento de una petici�n En el web.xml En el fichero de beans C�digo java

Escolano, Francisco

296

Static downhole characteristics of well CGEH-1 at Coso Hot Springs, China Lake, California  

Microsoft Academic Search

A series of measurements was made in the exploratory well CGEH-1 at Coso Hot Springs. The temperature measurements provide estimates for the thermal equilibration of the well and indicate that the fractures intersecting the well have different temperatures. The hottest fractures are in the upper-cased portion of the well. Downhole chemical sampling suggests that the borehole still contains remnants of

C. Goranson; R. Schroeder

1978-01-01

297

National Bioenergy Center Biochemical Platform Integration Project: Quarterly Update #28, Spring 2011  

SciTech Connect

Spring 2011 edition of the National Bioenergy Center's Biochemical Platform Integration Project quarterly newsletter. Issue topics: 33rd Symposium on Biotechnology for Fuels and Chemicals program sessions and special topic sessions; assessment of waste water treatment needs; and an update on new arabinose-to-ethanol fermenting Zymomonas mobilis strains.

Schell, D. J.

2011-04-01

298

A global model study of processes controlling aerosol size distributions in the Arctic spring and summer  

Microsoft Academic Search

We use a global chemical transport model (CTM) with size-resolved aerosol microphysics to evaluate our understanding of the processes that control Arctic aerosol, focussing on the seasonal changes in the particle size distribution during the transition from Arctic haze in spring to cleaner conditions in summer. This period presents several challenges for a global model simulation because of changes in

Hannele Korhonen; Kenneth S. Carslaw; Dominick V. Spracklen; David A. Ridley; Johan Strm

2008-01-01

299

Trans-Pacific transport of reactive nitrogen and ozone to Canada during spring  

Microsoft Academic Search

We interpret observations from the Intercontinental Chemical Transport Experiment, Phase B (INTEX-B) in spring 2006 using a global chemical transport model (GEOS-Chem) to evaluate sensitivities of the free troposphere above the North Pacific Ocean and North America to Asian anthropogenic emissions. We develop a method to use satellite observations of tropospheric NO2 columns to provide timely estimates of trends in

T. W. Walker; R. V. Martin; A. van Donkelaar; W. R. Leaitch; A. M. MacDonald; K. G. Anlauf; R. C. Cohen; T. H. Bertram; L. G. Huey; M. A. Avery; A. J. Weinheimer; F. M. Flocke; D. W. Tarasick; A. M. Thompson; D. G. Streets; X. Liu

2010-01-01

300

Trans-Pacific transport of reactive nitrogen and ozone to Canada during spring  

Microsoft Academic Search

We interpret observations from the Intercontinental Chemical Transport Experiment, Phase B (INTEX-B) in spring 2006 using a global chemical transport model (GEOS-Chem) to evaluate sensitivities of the Pacific and North American free troposphere to Asian anthropogenic emissions. We develop a method to use satellite observations of tropospheric NO2 columns to provide timely estimates of trends in NOx emissions. NOx emissions

T. W. Walker; R. V. Martin; A. van Donkelaar; W. R. Leaitch; A. M. MacDonald; K. G. Anlauf; R. C. Cohen; T. H. Bertram; L. G. Huey; M. A. Avery; A. J. Weinheimer; F. M. Flocke; D. W. Tarasick; A. M. Thompson; D. G. Streets; X. Liu

2010-01-01

301

Snow Conditions Near Barrow in Spring 2012  

NASA Astrophysics Data System (ADS)

Snow has a dual role in the growth and decay of Arctic sea ice. It provides insulation from colder air temperatures during the winter, which hinders sea ice formation. Snow is highly reflective and, as a result, it delays the surface ice melt during the spring. Summer snow melt influences the formation and location of melt ponds on sea ice, which further modifies heat transport into sea ice and the underlying ocean. Identifying snow thickness and extent is of key importance in understanding the surface heat budget, particularly during the early spring when the maximum snowfall has surpassed, and surface melt has not yet occurred. Regarding Arctic atmospheric chemical processes, snow may sustain or terminate halogen chemical recycling and distribution, depending on the state of the snow cover. Therefore, an accurate assessment of the snow cover state in the changing Arctic is important to identify subsequent impacts of snow change on both physical and chemical processes in the Arctic environment. In this study, we assess the springtime snow conditions near Barrow, Alaska using coordinated airborne and in situ measurements taken during the NASA Operation IceBridge and BRomine, Ozone, and Mercury EXperiment (BROMEX) field campaigns in March 2012, and compare these to climatological records. Operation IceBridge was conceived to bridge the gap between satellite retrievals ice thickness by ICESat which ceased operating in 2009 and ICESat-2 which is planned for launch in 2016. As part of the IceBridge mission, snow depth may be estimated by taking the difference between the snow/air surface and the snow/ice interface measured by University of Kansas's snow radar installed on a P-3 Orion and the measurements have an approximate spatial resolution of 40 m along-track and 16 m across-track. The in situ snow depth measurements were measured by an Automatic Snow Depth Probe (Magnaprobe), which has an accuracy of 0.5 cm. Samples were taken every one-to-two meters at two sites under the flight path of the P-3 during clear and calm conditions. The first site was located at Elson Lagoon which is representative of a flat area and light snow. It had a mean snow depth of 23.7 cm and a standard deviation of 4.2 cm over a 1000 m transect. The second site, farther east in Elson Lagoon, had a mean snow depth of 20.3 cm and standard deviation of 4.9 cm over a 500 m transect. In comparison, the measurements of IceBridge had mean snow depths of 23.7 cm and 20.7 cm with 6.2 cm and 8.5 cm standard deviations, respectively. After averaging the in situ measurements under each P-3 footprint, we found correlations of 0.65 and 0.47 for each study site. RMS differences were 5.5 cm and 8.5 cm. A snow-blowing event occurred from March 23-24, which had sustained wind speeds over 5 m/s. The second site was resampled following this event, resulting in a new mean snow depth of 21.2 cm and a 4.6 cm standard deviation. Snow depths at these sites were ~10 cm lower than the 1954-1991 climatological average for March according to Warren et al., 1999. Our preliminary results agree with those found in Farrell et al., 2012, who also found correlation values between 0.57 and 0.75. These results provide confidence in the quality of this data for studying the role of snow over the Arctic sea ice.

Webster, M.; Rigor, I.; Nghiem, S. V.; Sturm, M.; Kurtz, N. T.; Farrell, S. L.; Gleason, E.; Lieb-Lappen, R.; Saiet, E.

2012-12-01

302

Spatial distribution and temporal variation of 3He\\/ 4He in hot spring gas released from Unzen volcanic area, Japan  

Microsoft Academic Search

Following the first phreatic explosion on 17 November 1990, hot spring gases were collected periodically over the next 10years for 3He\\/4He isotopic ratio and chemical analyses from three hot springs (Obanma, Unzen and Shimabara) located around Unzen volcano, Japan. The 3He\\/4He ratios, although showing some scatter at each site, show an increase from west to east (Obama

K. Notsu; S. Nakai; G. Igarashi; J. Ishibashi; T. Mori; M. Suzuki; H. Wakita

2001-01-01

303

PLCO News, Spring/Summer 1998  

Cancer.gov

PLCO News, Spring/Summer 1998 Volume 3, Number 1 ----- Spring/Summer 2000 TABLE OF CONTENTS Oops! We missed putting this issue up on the web. We should get it up by the end of February 2001. Notes from the NCI's PLCO Project Office Meet the PLCO

304

PLCO News, Spring/Summer 1999  

Cancer.gov

PLCO News, Spring/Summer 1999 Volume 2, Number 1 ----- Spring/Summer 1999 In the Spotlight Genevieve Joseph Genevieve Joseph is no stranger to clinical trials. Before joining the PLCO study, she enrolled in the Women's Health Initiative (WHI), a very

305

Diabetes Experience Spring 2014 Interprofessional Diabetes Experience  

E-print Network

Diabetes Experience Spring 2014 Interprofessional Diabetes Experience Phar 6226/Nurs 5011 Spring the opportunity to learn in-depth knowledge of diabetes mellitus through active, hands-on learning experience of living with diabetes, in which they will give "insulin" injections and check blood glucoses

Thomas, David D.

306

PAID INTERNSHIP OPPORTUNITIES SPRING AND SUMMER 2014  

E-print Network

PAID INTERNSHIP OPPORTUNITIES SPRING AND SUMMER 2014 ABOUT THE PROGRAM: The Virginia Space Grant colleges are offering the Commonwealth STEM Industry Internship Program (CSIIP). CSIIP is a free resource for finding paid spring, summer, and fall internships. CSIIP provides an online system where undergraduate

Buehrer, R. Michael

307

EMPLOYERS ATTENDING JOB FAIR SPRING 2014  

E-print Network

EMPLOYERS ATTENDING JOB FAIR SPRING 2014 Updated: 2/13/14 211 Employers Attending Want to maximize your success at the fair? Review the information on this page for making the most of this employer list into the Huskies Get Hired Homepage, scroll down to the bottom left and click "Spring 2014 Job Fair". Check-out our

Karonis, Nicholas T.

308

Geology Fieldnotes: Pipe Spring National Monument, Arizona  

NSDL National Science Digital Library

Pipe Spring is a naturally occurring, free-flowing spring on the Arizona Strip that has attracted wayfarers and settlers for many centuries. The information on this site deals primarily with the prehistoric and recent human history of the monument, and includes links to additional resources.

309

Cold Spring Harbor Asia High Throughput Biology  

E-print Network

Cold Spring Harbor Asia High Throughput Biology Suzhou, China April 19 - 23, 2011 Arranged by: Edward Rubin, Lawrence Berkeley National Laboratory and DOE Joint Genome Institute Bing Ren, Ludwig to announce the inaugural Cold Spring Harbor Asia conference on High Throughput Biology which will be held

Smith, Adam D.

310

Global Health Curriculum Guide Spring 2012  

E-print Network

Global Health Curriculum Guide Spring 2012 #12;Global Health Curriculum Guide | Spring 2012 | page 2 Introduction The Global Health Curriculum Guide provides a listing of the current global health in the field of global health. Students should work with their faculty advisors to select the appropriate

Subramanian, Venkat

311

Spring 2009 Statistical Methods in Psychology  

E-print Network

Spring 2009 - 1 - PSY 270 Statistical Methods in Psychology PSY 271 Data Analysis in Psychology;Spring 2009 - 3 - Other Coursework Notes Cheating: Submitted assignments must reflect independent thought. Upon the first evidence of cheating, all students involved will receive a 0 on the assignment. A second

Gallo, Linda C.

312

Financial Statement Analysis & Valuation Spring 2014  

E-print Network

Kimbro Financial Statement Analysis & Valuation Spring 2014 1 ACCT/FIN 538 FINANCIAL STATEMENT ANALYSIS AND FIRM VALUATION PIGT 103 SPRING 2014 KIMBRO INSTRUCTOR AND CLASS INFORMATION Instructor to recast financial statements. To learn how to disaggregate and analyze: profitability, utilization

Carter, John

313

Bog Hot Springs, Nevada: the geothermal cycle  

Microsoft Academic Search

The Bog Hot Springs are located in one of the high desert valleys of northern Nevada below the Pueblo Mountains. The flow of the springs is estimated to be 2,500 gpm. Temperatures range from 125 to 212°F. (JGB)

1977-01-01

314

Instruction for Zoology TA Application Spring 2013  

E-print Network

Instruction for Zoology TA Application Spring 2013 1. IMPORTANT: This Year Kelly Layton not been a TA in Zoology in the past year: Attach a current resume. Attach copies of all of your college that upper level courses are often appointed to a zoology graduate student. Listed below are the Spring 2013

Turner, Monica G.

315

Spring 2006 CS 649 1 Sensor Networks  

E-print Network

models for wireless channels? #12;Friss Free-Space Propagation Model Spring 2006 CS 649 6 · Models that for large d rthhd >> 4 22 d hh GGPP rt rttr = #12;Log-distance Path Loss Model Spring 2006 CS 649 9 · Assume average power (in dB) decreases proportional to the log of distance · Path-loss exponent n, depends

Amir, Yair

316

College of Pharmacy -Spring 2014 Textbook List  

E-print Network

College of Pharmacy - Spring 2014 Textbook List 11/11/2013 Subject Area Number CRN (Optional; when/2011 McGraw-Hill Required Available by E- text IPPH 47100 21175 E. M. Topp Y softbound Compounding 0471784915 Editors G. You and M. Morris Wiley & Sons #12;College of Pharmacy - Spring 2014 Textbook List 11

Pittendrigh, Barry

317

NTNU Java: Spring Force and SHM  

NSDL National Science Digital Library

This Java applet presents the relations between simple harmonic motion and force with a demonstration of spring motion. It graphs both force and velocity versus position as the simulation runs. The user can add and remove mass and 'pull' the spring.

Hwang, Fu-Kwun

2004-12-19

318

PLCO News, Spring/Summer 1998  

Cancer.gov

PLCO News, Spring/Summer 1998 Volume 1, Number 1 ----- Spring/Summer 1998 TABLE OF CONTENTS Notes from the NCI's PLCO Project Office What is the PLCO Trial?Why volunteer?Screening testsWhy two study groups? From Lab to Life

319

Spring Flowers: Harvest of a Sensitive Eye  

ERIC Educational Resources Information Center

Defining and describing a number of spring flowers, this article includes illustrations and explanations that demonstrate "art and science are born of the same parents". The flowers discussed are skunk cabbage, bellwort, spring beauty, jack-in-the-pulpit, Solomon's seal, wild geranium, showy orchids, moccasin flower, bluets, apple, and Indian

Clark, Eloise; Levin, Ted

1978-01-01

320

PHYSICS 300 SPRING 2011 Waves and Optics  

E-print Network

PHYSICS 300 ­ ­ SPRING 2011 Waves and Optics Lecture: MWF 10:40 - 11:35 Rm: PP-112 TA: Peter Sandor4: 1, 3, 8ab, Peter Sandor Resonance Normal Modes Steel Spring) 118-134 10, 13 III Driven Coupled with one of the most spectacular applications of modern optics, the invention of the laser. Of course, you

Walter, Frederick M.

321

Spring control of wire harness loops  

NASA Technical Reports Server (NTRS)

Negator spring control guides wire harness between movable and fixed structure. It prevents electrical wire harness loop from jamming or being severed as wire moves in response to changes in position of aircraft rudder. Spring-loaded coiled cable controls wire loop regardless of rudder movement.

Curcio, P. J.

1979-01-01

322

The Maine Coastal Current: Spring Climatological Circulation  

E-print Network

The Maine Coastal Current: Spring Climatological Circulation Daniel R. Lynch, Monica J. Holboke for Continental Shelf Research Abstract Computational results are presented for the climatological circulation­wide simulations establishes the spring conditions within the annual climatological cycle. The distinctive Gulf

323

Database of historically documented springs and spring flow measurements in Texas  

USGS Publications Warehouse

Springs are naturally occurring features that convey excess ground water to the land surface; they represent a transition from ground water to surface water. Water issues through one opening, multiple openings, or numerous seeps in the rock or soil. The database of this report provides information about springs and spring flow in Texas including spring names, identification numbers, location, and, if available, water source and use. This database does not include every spring in Texas, but is limited to an aggregation of selected digital and hard-copy data of the U.S. Geological Survey (USGS), the Texas Water Development Board (TWDB), and Capitol Environmental Services.

Heitmuller, Franklin T.; Reece, Brian D.

2003-01-01

324

Chemical Mechanical Planarization- Chemical  

NSDL National Science Digital Library

This website includes an animation which illustrates the chemical action of slurry in the chemical-mechanical planarization process. Objective: Explain the mechanical and chemical steps in the CMP process. This simulation is from Module 068 of the Process & Equipment III Cluster of the MATEC Module Library (MML). Find this animation under the section "Process & Equipment III." To view other clusters or for more information about the MML visit http://matec.org/ps/library3/process_I.shtmlKey Phrase: MATEC Animation

2012-12-07

325

Microscopic physical biomarkers in carbonate hot springs: implications in the search for life on Mars  

NASA Technical Reports Server (NTRS)

Physical evidence of life (physical biomarkers) from the deposits of carbonate hot springs were documented at the scale of microorganisms--submillimeter to submicrometer. The four moderate-temperature (57 to 72 degrees C), neutral pH springs reported on in this study, support diverse communities of bacteria adapted to specific physical and chemical conditions. Some of the microbes coexist with travertine deposits in endolithic communities. In other cases, the microbes are rapidly coated and destroyed by precipitates but leave distinctive mineral fabrics. Some microbes adapted to carbonate hot springs produce an extracellular polymeric substance which forms a three-dimensional matrix with living cells and cell remains, known as a biofilm. Silicon and iron oxides often coat the biofilm, leading to long-term preservation. Submicrometer mineralized spheres composed of calcium fluoride or silica are common in carbonate hot spring deposits. Sphere formation is biologically mediated, but the spheres themselves are apparently not fossils or microbes. Additionally, some microbes selectively weather mineral surfaces in distinctive patterns. Hot spring deposits have been cited as prime locations for exobiological exploration of Mars. The presence of preserved microscopic physical biomarkers at all four sites supports a strategy of searching for evidence of life in hot spring deposits on Mars.

Allen, C. C.; Albert, F. G.; Chafetz, H. S.; Combie, J.; Graham, C. R.; Kieft, T. L.; Kivett, S. J.; McKay, D. S.; Steele, A.; Taunton, A. E.; Taylor, M. R.; Thomas-Keprta, K. L.; Westall, F.

2000-01-01

326

Microscopic Physical Biomarkers in Carbonate Hot Springs: Implications in the Search for Life on Mars  

NASA Astrophysics Data System (ADS)

Physical evidence of life (physical biomarkers) from the deposits of carbonate hot springs were documented at the scale of microorganismssubmillimeter to submicrometer. The four moderate-temperature (57 to 72C), neutral pH springs reported on in this study, support diverse communities of bacteria adapted to specific physical and chemical conditions. Some of the microbes coexist with travertine deposits in endolithic communities. In other cases, the microbes are rapidly coated and destroyed by precipitates but leave distinctive mineral fabrics. Some microbes adapted to carbonate hot springs produce an extracellular polymeric substance which forms a three-dimensional matrix with living cells and cell remains, known as a biofilm. Silicon and iron oxides often coat the biofilm, leading to long-term preservation. Submicrometer mineralized spheres composed of calcium fluoride or silica are common in carbonate hot spring deposits. Sphere formation is biologically mediated, but the spheres themselves are apparently not fossils or microbes. Additionally, some microbes selectively weather mineral surfaces in distinctive patterns. Hot spring deposits have been cited as prime locations for exobiological exploration of Mars. The presence of preserved microscopic physical biomarkers at all four sites supports a strategy of searching for evidence of life in hot spring deposits on Mars.

Allen, Carlton C.; Albert, Fred G.; Chafetz, Henry S.; Combie, Joan; Graham, Catherine R.; Kieft, Thomas L.; Kivett, Steven J.; McKay, David S.; Steele, Andrew; Taunton, Anne E.; Taylor, Michael R.; Thomas-Keprta, Kathie L.; Westall, Frances

2000-09-01

327

Mercury in water and biomass of microbial communities in hot springs of Yellowstone National Park, USA  

USGS Publications Warehouse

Ultra-clean sampling methods and approaches typically used in pristine environments were applied to quantify concentrations of Hg species in water and microbial biomass from hot springs of Yellowstone National Park, features that are geologically enriched with Hg. Microbial populations of chemically-diverse hot springs were also characterized using modern methods in molecular biology as the initial step toward ongoing work linking Hg speciation with microbial processes. Molecular methods (amplification of environmental DNA using 16S rDNA primers, cloning, denatured gradient gel electrophoresis (DGGE) screening of clone libraries, and sequencing of representative clones) were used to examine the dominant members of microbial communities in hot springs. Total Hg (THg), monomethylated Hg (MeHg), pH, temperature, and other parameters influential to Hg speciation and microbial ecology are reported for hot springs water and associated microbial mats. Several hot springs indicate the presence of MeHg in microbial mats with concentrations ranging from 1 to 10 ng g-1 (dry weight). Concentrations of THg in mats ranged from 4.9 to 120,000 ng g-1 (dry weight). Combined data from surveys of geothermal water, lakes, and streams show that aqueous THg concentrations range from l to 600 ng L-1. Species and concentrations of THg in mats and water vary significantly between hot springs, as do the microorganisms found at each site. ?? 2006.

King, S.A.; Behnke, S.; Slack, K.; Krabbenhoft, D.P.; Nordstrom, D.K.; Burr, M.D.; Striegl, R.G.

2006-01-01

328

Discharge rates of fluid and heat by thermal springs of the Cascade Range, Washington, Oregon, and northern California  

USGS Publications Warehouse

Fluid and heat discharge rates of thermal springs of the Cascade Range have been determined using the chloride inventory method. Discharge rates of thermal spring groups range from 1 to 120 L s-1. Most of the fluid (50%) and heat (61%) are discharged from two hot spring groups in northern Oregon. Total discharge from thermal springs in the Cascade Range of California, Oregon, and Washington is about 340 L s-1, which corresponds to about 8.2 ?? 104 kJ s-1 of heat. This does not include hot springs developed on the flanks of Mount St. Helens after the 1980 eruption. The Cascade Range consists of geologically and tectonically distinct segments; rates of convective heat discharge by the thermal springs in these segments correlate with volcanic rock extrusion rates for the last 2 m.y. In Oregon and Washington, many streams without known thermal or mineral springs in their drainage basins also were sampled for chloride and sodium to detect chemical anomalies that might be associated with previously unknown thermal or mineral waters. Only three chloride anomalies not associated with known thermal or mineral springs were identified. -Authors

Mariner, R. H.; Presser, T. S.; Evans, W. C.; Pringle, M. K. W.

1990-01-01

329

2. SHOWING (LEFT TO RIGHT) CHAPEL, STORE BUILDING, SPRING HOUSE, ...  

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

2. SHOWING (LEFT TO RIGHT) CHAPEL, STORE BUILDING, SPRING HOUSE, AND BATH HOUSE, SOUTHEAST FACADES (4 x 5 negative; 5 x 7 print) - Salt Sulpher Springs, U.S. Route 219, Salt Sulphur Springs, Monroe County, WV

330

46 CFR 64.59 - Spring loaded pressure relief valve.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 false Spring loaded pressure relief valve. 64.59 Section...TANKS AND CARGO HANDLING SYSTEMS Pressure Relief Devices and Vacuum Relief...MPTs 64.59 Spring loaded pressure relief valve. A spring...

2011-10-01

331

46 CFR 64.59 - Spring loaded pressure relief valve.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 false Spring loaded pressure relief valve. 64.59 Section...TANKS AND CARGO HANDLING SYSTEMS Pressure Relief Devices and Vacuum Relief...MPTs 64.59 Spring loaded pressure relief valve. A spring...

2010-10-01

332

SOUTHWEST CATALYSIS 2013 SPRING SYMPOSIUM  

E-print Network

9:15 AM Jerry Spivey, LSU Cain Department of Chemical Engineering, Baton Rouge, LA "Natural Gas coupons available for drivers of cars to exit the garage for free. You will input the coupon upon exiting

Natelson, Douglas

333

[Thermal springs of Kavassila/N. Ioannina/, Greece--research study].  

PubMed

The thermometallic springs of Kavassila, district Ioannina, are situated at a height of 410 m in a mild intermediate microclimate. They spring forth in two groups of springs near Sarantaporos river into which they pour without proper exploitation. Examinations of the water of the springs such as microbiological, microfloric blue algae and physico-chemicals have produced mainly: supply 400 m3/h, temperature 32 degrees C, electrical conductivity 1850 mS, colourless, taste of drinkable water, no emulsion, pH 7,60-8,20, sulfuric content 175,7 mg/l, strong odour of hydrogen sulphide, radon content 13-14 MACHE. Based on the above, the springs are to be characterised as hypothermic, hydrogen suplphide and sodium chloride containing mineral water, which is very suitable for drinking and bath therapy according to the principles of hydrotherapeutics: Water bath therapy and mud bath for the following diseases: skin diseases, rheumatoarthritic, chronic gynaecological, as well as vascular diseases. Inhalation therapy for troubles such as chronic troubles of the respiratory diseases, asthma, emphysema and laryngo-faryngeal pathological condition in both smokers and non-smokers. Drinking therapy for problems arising from the gastrointestinal tract, liver, bile ducts and kidneys. Similar springs in Greece, compared and mentioned are: Thermopylae, Kaiafa, Kyllini and abroad: Apenta-Springs Hungary and Piatigorsk Russia. For the correct exploitation of the thermomineral waters in Kavassila, the build-up of a modern curative hydrotherapeutic centre is proposed, due to the quality of the springs, as well as it's good and healthpromoting climate. PMID:6642199

Karagunis, M N

1983-01-01

334

Spring/dimple instrument tube restraint  

DOEpatents

A nuclear fuel assembly for a pressurized water nuclear reactor has a spring and dimple structure formed in a non-radioactive insert tube placed in the top of a sensor receiving instrumentation tube thimble disposed in the fuel assembly and attached at a top nozzle, a bottom nozzle, and intermediate grids. The instrumentation tube thimble is open at the top, where the sensor or its connection extends through the cooling water for coupling to a sensor signal processor. The spring and dimple insert tube is mounted within the instrumentation tube thimble and extends downwardly adjacent the top. The springs and dimples restrain the sensor and its connections against lateral displacement causing impact with the instrumentation tube thimble due to the strong axial flow of cooling water. The instrumentation tube has a stainless steel outer sleeve and a zirconium alloy inner sleeve below the insert tube adjacent the top. The insert tube is relatively non-radioactivated inconel alloy. The opposed springs and dimples are formed on diametrically opposite inner walls of the insert tube, the springs being formed as spaced axial cuts in the insert tube, with a web of the insert tube between the cuts bowed radially inwardly for forming the spring, and the dimples being formed as radially inward protrusions opposed to the springs.

DeMario, Edmund E. (Columbia, SC); Lawson, Charles N. (Columbia, SC)

1993-01-01

335

Spring/dimple instrument tube restraint  

DOEpatents

A nuclear fuel assembly for a pressurized water nuclear reactor has a spring and dimple structure formed in a non-radioactive insert tube placed in the top of a sensor receiving instrumentation tube thimble disposed in the fuel assembly and attached at a top nozzle, a bottom nozzle, and intermediate grids. The instrumentation tube thimble is open at the top, where the sensor or its connection extends through the cooling water for coupling to a sensor signal processor. The spring and dimple insert tube is mounted within the instrumentation tube thimble and extends downwardly adjacent the top. The springs and dimples restrain the sensor and its connections against lateral displacement causing impact with the instrumentation tube thimble due to the strong axial flow of cooling water. The instrumentation tube has a stainless steel outer sleeve and a zirconium alloy inner sleeve below the insert tube adjacent the top. The insert tube is relatively non-radioactivated inconel alloy. The opposed springs and dimples are formed on diametrically opposite inner walls of the insert tube, the springs being formed as spaced axial cuts in the insert tube, with a web of the insert tube between the cuts bowed radially inwardly for forming the spring, and the dimples being formed as radially inward protrusions opposed to the springs. 7 figures.

DeMario, E.E.; Lawson, C.N.

1993-11-23

336

[Spring macrobenthos communities of the Moscow province].  

PubMed

Macrozoobenthos communities are described based on material from 70 springs and spring brooks of the Moscow province. The communities include 587 taxa of various origin: 27 rheophiles, 11 crenobionts, 10 ubiquists of small water bodies, and 3 limnophiles. Rheophile species predominate in diversity (52%) and total abundance (41.5%). Crenobionts include Beraea pullata, B. maura, Crunoecia irrorata, Apatania zonella, Parachiona picicornis, Potamophylax nigrocornis, Oxycera pseudoamoena, O. rara, O. pardalina, Pedicia rivosa, Thaumalea testacea; six of these are recorded in the region for the first time. Four types of spring communities are recognised in the region according to the Braun-Blanquet method: with predominant Rhyacophilafasciata and Baetis rhodani (macrorheocrenes), Potamophylax nigroicornis (microrheocrenes), Nemurella pictetii (limnocrenes), and Parachiona picicornis (helocrenes). Three of them are confined to water bodies of different size and flow velocity; one (N. pictetii) is linked to weakly flowing silted wated bodies. Change of spring communities is often observed also downstream due to the distance from the opening of the spring. The structure of rheocrene communities is most similar to that of brooks, that are significantly larger than the rheocrenes. Limnocrene and helocrene communities have no counterparts among communities of other types of water bodies. Some of the specific traits of spring communities fit the island theory and can be explained by it. Comparison of the studied communities with those of springs of Sweden and England reveals wide variance of the general faunistic composition of the communities with a rather stable assortmeont of troglobiot species. PMID:17100099

Chertoprud, M V

2006-01-01

337

Causes of fluctuations in the rate of discharge of Clear Lake Springs, Millard County, Utah  

USGS Publications Warehouse

The Clear Lake Springs in southeastern Millard County are the source of water for the maintenance of the Clear Lakes Migratory Waterfowl Refuge. Seasonal declines in the rate of discharge were noted during 1959-60. Fluctuations in the flow of Clear Lake Springs are caused both by natural variations in the quantity of recharge and by variations in the quantity of water pumped from an increasing number of irrigation wells in the southern four districts of adjacent Pavant Valley. The springs are the principal discharge point for an aquifer in a complex of highly permeable basalt flows. Water enters the basalt aquifer as direct recharge from precipitation, as interformational leakage from a contiguous artesian aquifer in lake and alluvial sediments, and as infiltration of infrequent flood runoff and of unconsumed irrigation water in the lowlands of Pavant Valley. A hydrograph of the flow of the springs indicates that precipitation on the basalt outcrop recharges the aquifer; this conclusion is strengthened by fluctuations in the chemical quality of the spring water. The effects due to precipitation, however, are partly masked by the larger effects due to the pumping of ground water for irrigation in southern Pavant Valley. Withdrawal of ground water from wells in the southern four districts causes seasonal reductions in the flow of the springs by reducing the hydraulic gradient between the wells and the springs. Statistical analysis of three parameters--the (1) October-April precipitation, (2) annual pumpage, and (3) annual lowest rate of spring discharge--shows that a departure of 1 inch from the normal October-April precipitation at Fillmore is accompanied by a change of 0.41 cubic feet per second in the low flow of Clear Lake Springs. Similarly, a departure of 1,000 acre-feet from the 1961-64 average annual pumpage causes the low flow of the springs to change by 0.23 cubic feet per second. The average annual volume of discharge from Clear Lake Springs during 1960-64 was 14,900 acre-feet. The equation derived from the statistical analysis shows that of the average annual discharge, 3,000 acre-feet of water was derived from precipitation on the basalt, 9,000 acre-feet, from underflow from Pavant Valley, and 2,900 acre-feet, from undetermined sources.

Mower, R.W.

1967-01-01

338

Geochemistry of a spring-dense karst watershed located in a complex structural setting, Appalachian Great Valley, West Virginia, USA  

NASA Astrophysics Data System (ADS)

The distribution and chemistry of the springs in the Tuscarora Creek watershed is controlled by both geologic structure and karst dissolution. The watershed is located in eastern West Virginia in the structurally complex Great Valley of the Appalachian Valley and Ridge province. The upper portion of the stream parallels strike along a mapped fault zone and is bordered by clastic rocks that comprise North Mountain. The lower reaches of the stream flow cross-strike through Cambro-Ordovician carbonates. The controlling chemical signature in the spring water is carbonate dissolution. Little evidence was seen for the recharge from adjacent clastic rocks although differences in the Ca/Mg molar ratio between springs indicated the presence of localized spring basins in headwater reaches. Na, Cl and Ca generally increased from upstream to downstream in the cross-strike reaches. Comparison of stream and cumulative spring discharge was consistent with significant groundwater base-flow contribution directly to the creek, particularly in the strike-parallel region. The largest spring in the watershed (>162 L/s) was sampled during and after a large storm event along with the adjacent creek. The creek displayed a typical dilution response with each flood pulse, whereas the spring had only a limited or delayed response. The overall chemical and thermal stability of the spring, relative to the creek, indicated the lack of significant direct hydraulic connection between the two. The conceptual model for the area includes localized flowpaths in the headwater region where the stream flow is parallel to strike and a thrust fault. In addition to the shallow localized flowpaths, a deeper, more regional flowpath likely exists for a large spring further downstream.

Vesper, Dorothy J.; Grand, Rachel V.; Ward, Kristen; Donovan, Joseph J.

2009-08-01

339

Application of spring tabs to elevator controls  

NASA Technical Reports Server (NTRS)

Equations are presented for calculating the stick-force characteristics obtained with a spring-tab type of elevator control. The main problems encountered in the design of a satisfactory elevator spring tab are to provide stick forces in the desired range, to maintain the force per g sufficiently constant throughout the speed range, to avoid undesirable "feel" of the control in ground handling or in flight at low airspeeds, and to prevent flutter. Examples are presented to show the design features of spring tabs required to solve these problems for airplanes of various sizes.

Phillips, William H

1944-01-01

340

Illinois PER Interactive Examples: Box and Spring  

NSDL National Science Digital Library

This is an interactive homework problem for introductory physics students relating to oscillation. It involves a box of known mass sliding across a frictionless surface into a relaxed spring. Given spring constant and initial speed, the student must determine how long the box is in contact with the spring before it is released at the equilibrium point. A user-activated "help" sequence is provided for each step of the problem-solving, from conceptual analysis through quantitative calculation. To promote critical thinking, immediate feedback is received for both correct and incorrect responses. This item is part of a larger collection of interactive homework problems for introductory physics.

Gladding, Gary

2008-09-10

341

OIKOS 88: 139147. Copenhagen 2000 Macrophyte and fish chemicals suppress Daphnia growth and alter  

E-print Network

further examined how water containing chemicals from either a submerged macrophyte (waterweed, Elodea in spring water. In the lab experiment, daphnids exposed to Elodea chemicals took longer to mature and possessed fewer eggs than daphnids in media without Elodea chemicals. Daph- nids exposed to chemicals from

Burks, Romi

342

SPring-8 beamline control system.  

PubMed

The SPring-8 beamline control system is now taking part in the control of the insertion device (ID), front end, beam transportation channel and all interlock systems of the beamline: it will supply a highly standardized environment of apparatus control for collaborative researchers. In particular, ID operation is very important in a third-generation synchrotron light source facility. It is also very important to consider the security system because the ID is part of the storage ring and is therefore governed by the synchrotron ring control system. The progress of computer networking systems and the technology of security control require the development of a highly flexible control system. An interlock system that is independent of the control system has increased the reliability. For the beamline control system the so-called standard model concept has been adopted. VME-bus (VME) is used as the front-end control system and a UNIX workstation as the operator console. CPU boards of the VME-bus are RISC processor-based board computers operated by a LynxOS-based HP-RT real-time operating system. The workstation and the VME are linked to each other by a network, and form the distributed system. The HP 9000/700 series with HP-UX and the HP 9000/743rt series with HP-RT are used. All the controllable apparatus may be operated from any workstation. PMID:15263588

Ohata, T; Konishi, H; Kimura, H; Furukawa, Y; Tamasaku, K; Nakatani, T; Tanabe, T; Matsumoto, N; Ishii, M; Ishikawa, T

1998-05-01

343

Spring Break-Weathering Homework  

NSDL National Science Digital Library

Students are asked to photograph something that shows either physical or chemical weathering. They must be in the photograph for purposes of scale. They must then write up their description of the weathering feature and explain the actual weathering processes. This assignment can also be expanded to include mass wasting and mass wasting prevention.

Farthing, Dori

344

Intelligence Seminar Spring 2014 Instructor: Nash Unsworth  

E-print Network

PSYC 607 1 Intelligence Seminar Spring 2014 Instructor: Nash Unsworth Time: Monday 12 will examine variation in intelligence. Topics will include intelligence tests, psychometric, cognitive, and neural theories of intelligence, developmental changes in intelligence, group differences in intelligence

Lockery, Shawn

345

HUMAN GROSS ANATOMY ANTH 695 SPRING 2014  

E-print Network

1 HUMAN GROSS ANATOMY ANTH 695 � SPRING 2014 THE UNIVERSITY OF TENNESSEE description: Human Gross Anatomy provides advanced graduate students with in in Anatomy Lecture Series Fridays: 12:20 PM � 1:10 PM * All

Auerbach, Benjamin M.

346

SP.778 Toy Product Design, Spring 2007  

E-print Network

Toy Product Design is a MIT Public Service Center learning design course offered in the Spring semester. This course is an introduction to the product design process with a focus on designing for play and entertainment. ...

Kudrowitz, Barry M. (Barry Matthew)

347

Spring 2013 Graduate Engineering Internship Summary.  

National Technical Information Service (NTIS)

In the spring of 2013, I participated in the National Aeronautics and Space Administration (NASA) Pathways Intern Employment Program at the Kennedy Space Center (KSC) in Florida. This was my final internship opportunity with NASA, a third consecutive exte...

J. Ehrlich

2013-01-01

348

14 CFR 29.687 - Spring devices.  

...Each control system spring device whose failure could cause flutter or other unsafe characteristics must be reliable. (b) Compliance with paragraph (a) of this section must be shown by tests simulating service...

2014-01-01

349

14 CFR 27.687 - Spring devices.  

Code of Federal Regulations, 2012 CFR

...Each control system spring device whose failure could cause flutter or other unsafe characteristics must be reliable. (b) Compliance with paragraph (a) of this section must be shown by tests simulating service...

2012-01-01

350

14 CFR 27.687 - Spring devices.  

...Each control system spring device whose failure could cause flutter or other unsafe characteristics must be reliable. (b) Compliance with paragraph (a) of this section must be shown by tests simulating service...

2014-01-01

351

14 CFR 27.687 - Spring devices.  

Code of Federal Regulations, 2010 CFR

...Each control system spring device whose failure could cause flutter or other unsafe characteristics must be reliable. (b) Compliance with paragraph (a) of this section must be shown by tests simulating service...

2010-01-01

352

14 CFR 27.687 - Spring devices.  

Code of Federal Regulations, 2011 CFR

...Each control system spring device whose failure could cause flutter or other unsafe characteristics must be reliable. (b) Compliance with paragraph (a) of this section must be shown by tests simulating service...

2011-01-01

353

14 CFR 27.687 - Spring devices.  

Code of Federal Regulations, 2013 CFR

...Each control system spring device whose failure could cause flutter or other unsafe characteristics must be reliable. (b) Compliance with paragraph (a) of this section must be shown by tests simulating service...

2013-01-01

354

14 CFR 29.687 - Spring devices.  

Code of Federal Regulations, 2010 CFR

...Each control system spring device whose failure could cause flutter or other unsafe characteristics must be reliable. (b) Compliance with paragraph (a) of this section must be shown by tests simulating service...

2010-01-01

355

14 CFR 29.687 - Spring devices.  

Code of Federal Regulations, 2012 CFR

...Each control system spring device whose failure could cause flutter or other unsafe characteristics must be reliable. (b) Compliance with paragraph (a) of this section must be shown by tests simulating service...

2012-01-01

356

14 CFR 29.687 - Spring devices.  

Code of Federal Regulations, 2013 CFR

...Each control system spring device whose failure could cause flutter or other unsafe characteristics must be reliable. (b) Compliance with paragraph (a) of this section must be shown by tests simulating service...

2013-01-01

357

14 CFR 29.687 - Spring devices.  

Code of Federal Regulations, 2011 CFR

...Each control system spring device whose failure could cause flutter or other unsafe characteristics must be reliable. (b) Compliance with paragraph (a) of this section must be shown by tests simulating service...

2011-01-01

358

Department of Psychiatry Newsletter, Calgary Spring 2014  

E-print Network

Department of Psychiatry Newsletter, Calgary Spring 2014 From the Department Head recently secured a GFT position in geriatric psychiatry and healthy brain aging. He will collaborate exams in geriatric, child and adolescent, and forensic psychiatry. Congratulations to Dr. Rob Tanguay

Habib, Ayman

359

MBA 51702H: Marketing Management Spring 2014  

E-print Network

principles of marketing strategy, the integration of marketing tactics for coherent strategy marketing plans and the role of marketing plans in overall firm strategy Familiarity with currentMBA 51702H: Marketing Management Spring 2014 INSTRUCTOR: Dr. April Atwood office

Carter, John

360

Soil and Water Conservation Spring 2014  

E-print Network

SWS 4233 Soil and Water Conservation Spring 2014 Instructor Susan Curry scurry@ufl.edu 352 equations and reduction practices, government conservation programs; water conservation, irrigation students with an understanding of the interconnectedness of soil and water conservation. The course

Ma, Lena

361

The Nonlinear Spring and Energy Conservation.  

ERIC Educational Resources Information Center

Describes an air track experiment demonstrating the transfer of mechanical energy from elastic potential to kinetic. Discusses four methods for calculating energy stored in the spring. Included are pictures, typical data, and graphs. (YP)

Sherfinski, John

1989-01-01

362

2010 Spring : Highly Distinguished Honors Highly Distinguished  

E-print Network

A Highly Distinguished Atkinson Elizabeth Joan Highly Distinguished August Shelby Elizabeth Highly Tammy J Highly Distinguished Blackshaw Aaron Michael Highly Distinguished Blackwell Leslie Moore Highly Bostrom Seth Michael Highly Distinguished Bowes Meghan Elizabeth Highly Distinguished 2 #12;2010 Spring

Kasman, Alex

363

Phage Community Dynamics in Hot Springs  

PubMed Central

In extreme thermal environments such as hot springs, phages are the only known microbial predators. Here we present the first study of prokaryotic and phage community dynamics in these environments. Phages were abundant in hot springs, reaching concentrations of a million viruses per milliliter. Hot spring phage particles were resistant to shifts to lower temperatures, possibly facilitating DNA transfer out of these extreme environments. The phages were actively produced, with a population turnover time of 1 to 2 days. Phage-mediated microbial mortality was significant, making phage lysis an important component of hot spring microbial food webs. Together, these results show that phages exert an important influence on microbial community structure and energy flow in extreme thermal environments. PMID:15006788

Breitbart, Mya; Wegley, Linda; Leeds, Steven; Schoenfeld, Tom; Rohwer, Forest

2004-01-01

364

Seminar on Evolution Spring Semester 2004  

E-print Network

(morphological and molecular data, fossil record, etc.) to review our current understanding of the evolutionarySeminar on Evolution Spring Semester 2004 Charting the grand scheme of evolution, from the first

Wojciechowski, Marty

365

Spring 2005 From the northwestern corner of  

E-print Network

experimen- tal lines grown at NWARC for volatile organic compounds. The goal is to identify the molecules, as spring comes, it goes into a neatly folded pile of other favorites to return in the future clothing mix

Maxwell, Bruce D.

366

Ejs Intro SpringLab Model  

NSDL National Science Digital Library

The Introductory Spring Lab model asks students to develop a model for a mass on a spring. It is distributed as a ready-to-run (compiled) Java archive. Double-clicking the ejs_intro_SpringLab.jar file will run the program if Java is installed. In order to modify this simulation (and see how it is designed), if you have Ejs installed, you can right-click within the simulation window and select Open Ejs Model from the pop-up menu. Information about Ejs (Easy Java Simulations) is available at: . The Intro Spring Lab program is one of a suite of Easy Java Simulations (Ejs) models used in Introductory Physics Labs. Ejs, a part of the Open Source Physics Project, and is designed to make it easier to access, modify and generate computer models. Additional models can be found by searching ComPADRE for Ejs.

Cox, Anne; Christian, Wolfgang; Belloni, Mario

2008-05-30

367

Psychology 610: Childhood Psychopathology Spring, 2012  

E-print Network

Psychology 610: Childhood Psychopathology Spring, 2012 Thursdays, 12-2:00pm (+/-) 143 Straub child psychopathology. An empirically-based developmental psychopathology perspective will be featured descriptive psychopathology will also be covered, in particular, beginning fluency with the details

Lockery, Shawn

368

Insights into Spring 2008 Gasoline Prices  

EIA Publications

Gasoline prices rose rapidly in spring 2007 due a variety of factors, including refinery outages and lower than expected imports. This report explores those factors and looks at the implications for 2008.

2008-01-01

369

City of Soda Springs energy plan  

SciTech Connect

Soda Springs is a community of 4051 people located in southeastern Idaho. The City is planning to become a power sales customer of the Bonneville Power Administration (BPA) and establish a City electrical department. To fulfill requirements and to better serve the City's consumers, the Mayor and City Council submitted a proposal for grant funds from BPA to develop a community energy plan for Soda Springs. The City was awarded a grant and this report is the final product of the planning process.

Not Available

1983-09-01

370

Stabilising Springs for Fixed Lingual Retainer  

PubMed Central

Most treated malocclusion needs fixed lingual retention. To stabilise fixed lingual retainer in the exact location needs proper stabilisation. Proper stabilization requires a holding spring. This Stabilising Spring should be easy to fabricate and help the clinician to stabilise the retainer quickly and save the chair side time. More over it should not irritate the mucosa and should be easy to insert and remove. PMID:24392431

Karthikeyan, M.K.; Ramachandraprabhakar; Saravanan, R.; Rajvikram, N.; Kuppuchamy

2013-01-01

371

Study on damping of air spring with additional chamber  

Microsoft Academic Search

A mechanical model of the air spring with an additional chamber was built with considering the temperature influence. The static and dynamic external characteristics of the air spring were also studied by comparing the results of the simulation with the experiment. The research shows the larger the additional volume is ,the smaller the spring stiffness , the air spring inherent

Zhongxing Li; Jiwei Guo; Mei Li; Xufeng Shen; Weijuan Jiang; Yue Wu

2011-01-01

372

Spring Chinook Salmon Production in the Deschutes Basin Project Narrative  

E-print Network

Spring Chinook Salmon Production in the Deschutes Basin Project Narrative Project Name Spring Chinook Salmon Production in The Deschutes River Basin Project Number 2008-311-00 Proposer Confederated of natural and artificial production of spring Chinook salmon in streams on the Warm Springs Indian

373

Relationship between hot springs and geothermal fields in Japan  

Microsoft Academic Search

Hot springs usually are situated in the volcanic belt of a convergent zone and are utilized as indicators of geothermal potential in an area. Characteristics of hot springs in Japan have been examined in order to understand the relationship between hot springs and geothermal fields. The characteristics examined include locations of hot springs, their temperature, density of distribution, flow rate,

Hemendra R. Acharya

1989-01-01

374

NOAA Fisheries Silver Spring, MD, June 22, 2005  

E-print Network

NOAA Fisheries Silver Spring, MD, June 22, 2005 Dr. Jennifer Sepez, Alaska Fisheries Science Center #12;NOAA Fisheries Silver Spring, MD, June 22, 2005 #12;NOAA Fisheries Silver Spring, MD, June 22 Communities #12;NOAA Fisheries Silver Spring, MD, June 22, 2005 · Compiling Data · Data in the Profiles · Data

375

Assessment of sulfurous springs in the west of Iraq for balneotherapy, drinking, irrigation and aquaculture purposes.  

PubMed

This research deals with the sulfurous spring waters flow along the course of the Euphrates River in western Iraq in the area extended between Haqlaniya and Hit within the Al-Anbar governorate. Eleven springs (3 in Haqlanya, 4 in Kubaysa and 4 in Hit) have been addressed for the purpose of water evaluation for balneology, drinking, irrigation and aquaculture (fish farming). In order to meet the objectives of this research, all springs were sampled and analyzed for the total dissolved solid, electrical conductivity, pH, temperature, major cations (Ca(2+), Mg(2+), Na(+) and K(+)), major anions (SO(4)(2-), Cl(-), HCO(3)(-) and CO(3)(2-)), minor anions (PO(4)(3-)and NO(3)(-)) as well as the trace elements that included Pb, Zn, Cd, Ni, Fe, Mn, Cu, Br, F, Ba, B, Sr, Al, As, Cr, Hg and Se. The International Standards of World Health Organization are used for assessing the water quality. The results revealed that the springs belong to the tepid springs of 27-30 C and classified as hypothermal to the thermal springs. Lithochemistry and geochemical processes clearly affected the water chemistry. The hydrogeochemical processes are responsible for the element enrichment in water by the chemical dissolution of carbonate and gypsum and evaporation as well. The results of the study indicate the possibility of using spring water for therapeutic purposes, but not allowed for drinking and aquaculture (fish farming), except those free of H(2)S gas. On the other hand, it can be used for irrigation with risk. However, soil type as well as proper selection of plants should be taken into consideration. PMID:23887869

Awadh, Salih Muhammad; Al-Ghani, Sura Abdul

2014-06-01

376

Microbiology and geochemistry of Little Hot Creek, a hot spring environment in the Long Valley Caldera.  

PubMed

A culture-independent community census was combined with chemical and thermodynamic analyses of three springs located within the Long Valley Caldera, Little Hot Creek (LHC) 1, 3, and 4. All three springs were approximately 80 degrees C, circumneutral, apparently anaerobic and had similar water chemistries. 16S rRNA gene libraries constructed from DNA isolated from spring sediment revealed moderately diverse but highly novel microbial communities. Over half of the phylotypes could not be grouped into known taxonomic classes. Bacterial libraries from LHC1 and LHC3 were predominantly species within the phyla Aquificae and Thermodesulfobacteria, while those from LHC4 were dominated by candidate phyla, including OP1 and OP9. Archaeal libraries from LHC3 contained large numbers of Archaeoglobales and Desulfurococcales, while LHC1 and LHC4 were dominated by Crenarchaeota unaffiliated with known orders. The heterogeneity in microbial populations could not easily be attributed to measurable differences in water chemistry, but may be determined by availability of trace amounts of oxygen to the spring sediments. Thermodynamic modeling predicted the most favorable reactions to be sulfur and nitrate respirations, yielding 40-70 kJ mol(-1) e(-) transferred; however, levels of oxygen at or below our detection limit could result in aerobic respirations yielding up to 100 kJ mol(-1) e(-) transferred. Important electron donors are predicted to be H(2), H(2)S, S(0), Fe(2+) and CH(4), all of which yield similar energies when coupled to a given electron acceptor. The results indicate that springs associated with the Long Valley Caldera contain microbial populations that show some similarities both to springs in Yellowstone and springs in the Great Basin. PMID:20002204

Vick, T J; Dodsworth, J A; Costa, K C; Shock, E L; Hedlund, B P

2010-03-01

377

Fish Health Studies Associated with the Kingston Fly Ash Spill, Spring 2009 - Fall 2010  

SciTech Connect

On December 22, 2008, over 4 million cubic meters of fly ash slurry was released into the Emory River when a dike surrounding a solid waste containment area at the Tennessee Valley Authority's (TVA) Kingston Fossil Plant ruptured. One component of TVA's response to the spill is a biological monitoring program to assess short- and long-term ecological responses to the ash and associated chemicals, including studies on fish health and contaminant bioaccumulation. These studies were initiated in early Spring 2009 for the purposes of: (1) documenting the levels of fly ash-associated metals in various tissues of representative sentinel fish species in the area of the fly ash spill, (2) determining if exposure to fly ash-associated metals causes short, intermediate, or long-term health effects on these sentinel fish species, (3) assessing if there are causal relationships between exposure to metals and health effects on fish, (4) evaluating, along with information from other ecological and physicochemical studies, the nature and route of contaminant transfer though food chains into higher level consumers, (5) providing important information for the Ecological Risk Assessment (ERA) for the Kingston fly ash project, and (6) serving as an important technology information transfer or model study focused on how to best evaluate the environmental effects of fly ash (and related environmental stressors), not only at the Kingston site, but also at sites on other aquatic systems where coal-fired generating stations are located. This report presents the results of the first two years of the fish health study. To date, fish health and bioaccumulation studies have been conducted from Spring 2009 though Fall 2011 and includes 6 seasonal studies: Spring 2009, Fall 2009, Spring 2010, Fall 2010, Spring 2011, and Fall 2011. Both the Spring and Fall studies have focused on 3-4 sentinel fish species that represent different feeding habits, behaviors, and home ranges. In addition to fish health and bioaccumulation, the Spring investigations also included reproductive integrity studies on the same fish used for bioaccumulation and fish health. In this report, results of the fish health studies from Spring 2009 through Fall 2010 are presented while an associated report will present the fish reproductive studies conducted during Spring 2009 and Spring 2010. A report on fish bioaccumulation was submitted to TVA in June 2011. The fish health study conducted in conjunction with the bioaccumulation and reproductive study is critical for assessing and evaluating possible causal relationships between contaminant exposure (bioaccumulation) and the response of fish to exposure as reflected by the various measurements of fish health.

Adams, Marshall [ORNL; Fortner, Allison M [ORNL

2012-05-01

378

Environmental consequences of geochemical change in hot spring ecosystems  

NASA Astrophysics Data System (ADS)

Hydrothermal systems provide a natural laboratory for studying the effects of geochemical change over time, and for testing predictions of how geochemical change will affect microbial ecology. Hot springs in hydrothermal areas that express the results of subsurface boiling, phase separation, and differential movement of liquid phase and vapor phase constituents can fluctuate in temperature and composition. Since 1999 we have sampled several fluctuating hot springs at Yellowstone National Park, and those hat experience large geochemical changes provide opportunities to quantify the effects of fluctuations on chemical energy supplies. Annual samples from Obsidian Pool (Mud Volcano Area) showed that pH increased from 6.5 (in 1999) to 6.8 (00), steadily decreased to 4.2 (06), and then increased to 5.2 (09), with temperature ranging from 76.4 to 85.3C. Simultaneously the chloride concentration increased by 65% (from 18.5 ppm in 1999 to 30.7 ppm in 2009), indicative of increased hydrothermal input, and the sulfate concentration increased by over 300% (from 50.0 ppm in 2000 to 203.8 ppm in 2009), suggesting an increased gas-phase sulfide input and subsequent oxidation. Several energy yielding reactions at a pH of 6.5 no longer yield energy at pH of 4.2. This suggests that microorganisms that use those pathways had a negative selection pressure with the drop in pH. As an example, the chemical affinity for sulfur reduction to pyrite coupled to iron oxidation to goethite changed from 7.1 (pH = 6.5) to -1.3 kcal/mol e- (pH = 4.2), and once again had a positive value at pH = 5.2. This means that microorganisms using this pathway may once again inhabit the hot spring while many others from when the pH was 6.5 still have a negative selection pressure. The pH of another hot spring in the Sylvan Springs Area steadily increased from 3.7 (04) to 7.6 (08) while the temp. decreased from 52.9 to 41.9C, chloride concentration increased by 32% (from 464 to 614 ppm), and the sulfate concentration decreased by 36 % (from 255 to 166 ppm). The changes suggest an increased liquid-phase hydrothermal input (increasing Cl) coupled with a decreased gas-phase input (sulfide, oxidized to sulfate). Many reactions that do not yield energy at pH = 3.7 become energy yielding at pH = 7.6, including methanogenesis from CO or CO2 coupled with H2S oxidation to pyrite. These examples from the geochemistry of fluctuating hot spring systems illustrate how predictions can be made about dynamic changes in microbial ecosystems that can be tested by molecular methods.

Havig, J. R.; Shock, E.

2010-12-01

379

Hydrogeology of northern Sierra de Chiapas, Mexico: a conceptual model based on a geochemical characterization of sulfide-rich karst brackish springs  

NASA Astrophysics Data System (ADS)

Conspicuous sulfide-rich karst springs flow from Cretaceous carbonates in northern Sierra de Chiapas, Mexico. This is a geologically complex, tropical karst area. The physical, geologic, hydrologic and chemical attributes of these springs were determined and integrated into a conceptual hydrogeologic model. A meteoric source and a recharge elevation below 1,500 m are estimated from the spring-water isotopic signature regardless of their chemical composition. Brackish spring water flows at a maximum depth of 2,000 m, as inferred from similar chemical attributes to the produced water from a nearby oil well. Oil reservoirs may be found at depths below 2,000 m. Three subsurface environments or aquifers are identified based on the B, Li+, K+ and SiO2 concentrations, spring water temperatures, and CO2 pressures. There is mixing between these aquifers. The aquifer designated Local is shallow and contains potable water vulnerable to pollution. The aquifer named Northern receives some brackish produced water. The composition of the Southern aquifer is influenced by halite dissolution enhanced at fault detachment surfaces. Epigenic speleogenesis is associated with the Local springs. In contrast, hypogenic speleogenesis is associated with the brackish sulfidic springs from the Northern and the Southern environments.

Rosales Lagarde, Laura; Boston, Penelope J.; Campbell, Andrew R.; Hose, Louise D.; Axen, Gary; Stafford, Kevin W.

2014-09-01

380

Hydrologic data for water-table aquifers in the Colorado Springs-Castle Rock area, Front Range Urban Corridor, Colorado  

USGS Publications Warehouse

As part of the U.S. Geological Survey 's investigations of the hydrology and geology in the Front Range Urban Corridor of Colorado, hydrologic data for water-table aquifers in the Colorado Springs--Castle Rock area were collected and compiled during 1976-77. These data, consisting of records for 157 wells and 47 springs and chemical analyses of water for 135 of the wells and all 47 springs, are presented in tabular form. The tables contain data that were collected during the investigation , data compiled from reports published by the Colorado Water Conservation Board, and unpublished data from the files of the U.S. Geological Survey. State and local officials in the Colorado Springs--Castle Rock area may find these data useful in planning for residential, commercials, and industrial development. (Woodard-USGS)

Hutchinson, E. Carter; Hillier, Donald E.

1978-01-01

381

Evaluation of Acoustic Doppler Velocity Meters to Quantify Flow From Comal Springs and San Marcos Springs, Texas  

USGS Publications Warehouse

Comal Springs and San Marcos Springs are the two largest springs in Texas, are major discharge points for the San Antonio segment of the Edwards aquifer, and provide habitat for several Federally listed endangered species that depend on adequate springflows for survival. It is therefore imperative that the Edwards Aquifer Authority have accurate and timely springflow data to guide resource management. Discharge points for Comal Springs and San Marcos Springs are submerged in Landa Lake and in Spring Lake, respectively. Flows from the springs currently (2008) are estimated by the U.S Geological Survey in real time as surface-water discharge from conventional stage-discharge ratings at sites downstream from each spring. Recent technological advances and availability of acoustic Doppler velocity meters (ADVMs) now provide tools to collect data (stream velocity) related to springflow that could increase accuracy of real-time estimates of the springflows. The U.S. Geological Survey, in cooperation with the Edwards Aquifer Authority, did a study during May 2006 through September 2007 to evaluate ADVMs to quantify flow from Comal and San Marcos Springs. The evaluation was based on two monitoring approaches: (1) placement of ADVMs in important spring orifices - spring run 3 and spring 7 at Comal Springs, and diversion spring at San Marcos Springs; and (2) placement of ADVMs at the nearest flowing streams - Comal River new and old channels for Comal Springs, Spring Lake west and east outflow channels and current (2008) San Marcos River streamflow-gaging site for San Marcos Springs. For Comal Springs, ADVM application at spring run 3 and spring 7 was intended to indicate whether the flows of spring run 3 and spring 7 can be related to total springflow. The findings indicate that velocity data from both discharge features, while reflecting changes in flow, do not reliably show a direct relation to measured streamflow and thus to total Comal Springs flow. ADVMs at the Comal River new channel and old channel sites provide data that potentially could yield more accurate real-time estimates of total Comal Springs flow than streamflow measured at the downstream Comal River site. For San Marcos Springs, the findings indicate shortcomings with ADVM installations at diversion spring and in the west and east outflow channels. However, the accuracy of streamflow measured at the San Marcos River gage as an estimate of real-time San Marcos Springs flow could potentially be increased through use of ADVM data from that site.

Gary, Marcus O.; Gary, Robin H.; Asquith, William H.

2008-01-01

382

Summary of basic hydrologic data collected at Coso Hot Springs, Inyo County, California  

USGS Publications Warehouse

More than 200 wells and springs were visited within a 20-mile radius of Coso Hot Springs, Calif. Hydrologic and geothermal data were collected for each well or spring site. The data includes depth, chemical quality, temperature and specific conductance of water, quantity of flow, well construction, and well logs. These data show that the normal temperature gradient in the ground is about 1.1 degrees Celsius (2 degrees Fahrenheit) per 100 feet. The temperature gradient in the thermal areas is as high as 24.4 degrees Celsius (44 degrees Fahrenheit) per 100 feet. The highest temperature measured for all the wells and springs was 142.2 degrees Celsius (288 degrees Fahrenheit). The chemical quality of water in the study area is generally good except in areas where water evaporates from land surface at Owens Valley playa or where steam escapes into the atmosphere from land surface. Computerized hydrologic and geothermal data are being stored for future use at the U.S. Geological Survey office, Laguna Niguel, Calif. (Woodard-USGS)

Moyle, W.R.

1977-01-01

383

Models of Formation and Activity of Spring Mounds in the Mechertate-Chrita-Sidi El Hani System, Eastern Tunisia: Implications for the Habitability of Mars  

PubMed Central

Spring mounds on Earth and on Mars could represent optimal niches of life development. If life ever occurred on Mars, ancient spring deposits would be excellent localities to search for morphological or chemical remnants of an ancient biosphere. In this work, we investigate models of formation and activity of well-exposed spring mounds in the Mechertate-Chrita-Sidi El Hani (MCSH) system, eastern Tunisia. We then use these models to explore possible spring mound formation on Mars. In the MCSH system, the genesis of the spring mounds is a direct consequence of groundwater upwelling, triggered by tectonics and/or hydraulics. As they are oriented preferentially along faults, they can be considered as fault spring mounds, implying a tectonic influence in their formation process. However, the hydraulic pressure generated by the convergence of aquifers towards the surface of the system also allows consideration of an origin as artesian spring mounds. In the case of the MCSH system, our geologic data presented here show that both models are valid, and we propose a combined hydro-tectonic model as the likely formation mechanism of artesian-fault spring mounds. During their evolution from the embryonic (early) to the islet (island) stages, spring mounds are also shaped by eolian accumulations and induration processes. Similarly, spring mounds have been suggested to be relatively common in certain provinces on the Martian surface, but their mode of formation is still a matter of debate. We propose that the tectonic, hydraulic, and combined hydro-tectonic models describing the spring mounds at MCSH could be relevant as Martian analogs because: (i) the Martian subsurface may be over pressured, potentially expelling mineral-enriched waters as spring mounds on the surface; (ii) the Martian subsurface may be fractured, causing alignment of the spring mounds in preferential orientations; and (iii) indurated eolian sedimentation and erosional remnants are common features on Mars. The spring mounds further bear diagnostic mineralogic and magnetic properties, in comparison with their immediate surroundings. Consequently, remote sensing techniques can be very useful to identify similar spring mounds on Mars. The mechanisms (tectonic and/or hydraulic) of formation and evolution of spring mounds at the MCSH system are suitable for the proliferation and protection of life respectively. Similarly, life or its resulting biomarkers on Mars may have been protected or preserved under the spring mounds.

Essefi, Elhoucine; Komatsu, Goro; Fairen, Alberto G.; Chan, Marjorie A.; Yaich, Chokri

2014-01-01

384

Models of formation and activity of spring mounds in the mechertate-chrita-sidi el hani system, eastern Tunisia: implications for the habitability of Mars.  

PubMed

Spring mounds on Earth and on Mars could represent optimal niches of life development. If life ever occurred on Mars, ancient spring deposits would be excellent localities to search for morphological or chemical remnants of an ancient biosphere. In this work, we investigate models of formation and activity of well-exposed spring mounds in the Mechertate-Chrita-Sidi El Hani (MCSH) system, eastern Tunisia. We then use these models to explore possible spring mound formation on Mars. In the MCSH system, the genesis of the spring mounds is a direct consequence of groundwater upwelling, triggered by tectonics and/or hydraulics. As they are oriented preferentially along faults, they can be considered as fault spring mounds, implying a tectonic influence in their formation process. However, the hydraulic pressure generated by the convergence of aquifers towards the surface of the system also allows consideration of an origin as artesian spring mounds. In the case of the MCSH system, our geologic data presented here show that both models are valid, and we propose a combined hydro-tectonic model as the likely formation mechanism of artesian-fault spring mounds. During their evolution from the embryonic (early) to the islet ("island") stages, spring mounds are also shaped by eolian accumulations and induration processes. Similarly, spring mounds have been suggested to be relatively common in certain provinces on the Martian surface, but their mode of formation is still a matter of debate. We propose that the tectonic, hydraulic, and combined hydro-tectonic models describing the spring mounds at MCSH could be relevant as Martian analogs because: (i) the Martian subsurface may be over pressured, potentially expelling mineral-enriched waters as spring mounds on the surface; (ii) the Martian subsurface may be fractured, causing alignment of the spring mounds in preferential orientations; and (iii) indurated eolian sedimentation and erosional remnants are common features on Mars. The spring mounds further bear diagnostic mineralogic and magnetic properties, in comparison with their immediate surroundings. Consequently, remote sensing techniques can be very useful to identify similar spring mounds on Mars. The mechanisms (tectonic and/or hydraulic) of formation and evolution of spring mounds at the MCSH system are suitable for the proliferation and protection of life respectively. Similarly, life or its resulting biomarkers on Mars may have been protected or preserved under the spring mounds. PMID:25370379

Essefi, Elhoucine; Komatsu, Goro; Fairn, Alberto G; Chan, Marjorie A; Yaich, Chokri

2014-01-01

385

Kelly Hot Spring Geothermal Project: Kelly Hot Spring Agricultural Center preliminary design. Final technical report  

Microsoft Academic Search

A Phase 1 Preliminary Design, Construction Planning and Economic Analysis has been conducted for the Kelly Hot Spring Agricultural Center in Modoc County, California. The core activity is a 1360 breeding sow, swine raising complex that utilizes direct heat energy from the Kelly Hot Spring geothermal resource. The swine is to be a totally confined operation for producing premium pork

Longyear

1980-01-01

386

11:776:210 Principles of Botany (4 credits) (Spring 2012) Offered: Spring semester.  

E-print Network

11:776:210 Principles of Botany (4 credits) (Spring 2012) Offered: Spring semester. Instructor January 18: Class Introductions - Syllabus, class presentation topics, What is Botany? What is a plant? Plant role in human life, scientific communication in Botany. January23: The plant cell: Structure (Cell

Chen, Kuang-Yu

387

PH 222-3A Spring 2007PH 222 3A Spring 2007 ELECTRIC CHARGE  

E-print Network

PH 222-3A Spring 2007PH 222 3A Spring 2007 ELECTRIC CHARGE Lecture 1 Chapter 21 (Halliday/Resnick/Walker, Fundamentals of Physics 8th edition) 1 #12;Chapter 21 Electric Charge In this chapter we will introduce a new

Mirov, Sergey B.

388

Spring 2014Spring 2014 Graduate School Preparation SeminarGraduate School Preparation Seminar  

E-print Network

, visit: http://www.oseel.niu.edu/engagedlearning/ grad_school_prep/ Lunch & Grand Prize: GRE WaiverSpring 2014Spring 2014 Graduate School Preparation SeminarGraduate School Preparation Seminar The Grad School Prep Seminar provides information about Finding a Graduate/Professional School Applying

Karonis, Nicholas T.

389

Depositional facies and aqueous-solid geochemistry of travertine-depositing hot springs (Angel Terrace, Mammoth Hot Springs, Yellowstone National Park, U.S.A.)  

NASA Technical Reports Server (NTRS)

Petrographic and geochemical analyses of travertine-depositing hot springs at Angel Terrace, Mammoth Hot Springs, Yellowstone National Park, have been used to define five depositional facies along the spring drainage system. Spring waters are expelled in the vent facies at 71 to 73 degrees C and precipitate mounded travertine composed of aragonite needle botryoids. The apron and channel facies (43-72 degrees C) is floored by hollow tubes composed of aragonite needle botryoids that encrust sulfide-oxidizing Aquificales bacteria. The travertine of the pond facies (30-62 degrees C) varies in composition from aragonite needle shrubs formed at higher temperatures to ridged networks of calcite and aragonite at lower temperatures. Calcite "ice sheets", calcified bubbles, and aggregates of aragonite needles ("fuzzy dumbbells") precipitate at the air-water interface and settle to pond floors. The proximal-slope facies (28-54 degrees C), which forms the margins of terracette pools, is composed of arcuate aragonite needle shrubs that create small microterracettes on the steep slope face. Finally, the distal-slope facies (28-30 degrees C) is composed of calcite spherules and calcite "feather" crystals. Despite the presence of abundant microbial mat communities and their observed role in providing substrates for mineralization, the compositions of spring-water and travertine predominantly reflect abiotic physical and chemical processes. Vigorous CO2 degassing causes a +2 unit increase in spring water pH, as well as Rayleigh-type covariations between the concentration of dissolved inorganic carbon and corresponding delta 13C. Travertine delta 13C and delta 18O are nearly equivalent to aragonite and calcite equilibrium values calculated from spring water in the higher-temperature (approximately 50-73 degrees C) depositional facies. Conversely, travertine precipitating in the lower-temperature (< approximately 50 degrees C) depositional facies exhibits delta 13C and delta 18O values that are as much as 4% less than predicted equilibrium values. This isotopic shift may record microbial respiration as well as downstream transport of travertine crystals. Despite the production of H2S and the abundance of sulfide oxidizing microbes, preliminary delta 34S data do not uniquely define the microbial metabolic pathways present in the spring system. This suggests that the high extent of CO2 degassing and large open-system solute reservoir in these thermal systems overwhelm biological controls on travertine crystal chemistry.

Fouke, B. W.; Farmer, J. D.; Des Marais, D. J.; Pratt, L.; Sturchio, N. C.; Burns, P. C.; Discipulo, M. K.

2000-01-01

390

Ejs Orbiting Mass with Spring Force Model  

NSDL National Science Digital Library

The Ejs Orbiting Mass with Spring Force model displays the frictionless dynamics of a mass constrained to orbit on a table due to a spring. The simulation displays the motion of the mass as well as the effective potential energy. The initial velocity, k/m, and the proper or natural length of the spring can be changed via textboxes. You can modify this simulation if you have Ejs installed by right-clicking within the plot and selecting Open Ejs Model from the pop-up menu item. Ejs Orbiting Mass with Spring Force model was created using the Easy Java Simulations (Ejs) modeling tool. It is distributed as a ready-to-run (compiled) Java archive. Double clicking the ejs_ehu_central_forces_spring.jar file will run the program if Java is installed. Ejs is a part of the Open Source Physics Project and is designed to make it easier to access, modify, and generate computer models. Additional Ejs models for Newtonian mechanics are available. They can be found by searching ComPADRE for Open Source Physics, OSP, or Ejs.

Aguirregabiria, Juan

2008-08-19

391

Driven Mass and Spring Mesh Model  

NSDL National Science Digital Library

The Driven Mass and Spring Mesh model displays the dynamics of a 2D array of masses coupled by springs and driven by a sinusoidal force. The model shows a time-dependent animation of the displacement or each mass. The driving force can be applied at a single point (shown in red) or uniformly at all mesh points and the drive frequency f and amplitude A can be set as well as a damping coefficient b. As the frequency is varied the mesh vibrates strongly (resonates) at some frequencies and very little at others. These resonances have patterns that were first studied by Ernst Chladni and this simulation is designed to investigate these patterns using an idealized mass and spring model. In order to find the resonances, it is useful to plot the mechanical energy as a function of frequency f after the system reaches its oscillatory steady state. A resonance scan option shows this plot. The Driven Mass and Spring Mesh model is a supplemental simulation for the article "Chladni Patterns on Drumheads: A Physics of Music Experiment" by Randy Worland in The Physics Teacher 49(1), 24-27 (2011) and has been approved by the authors and The Physics Teacher editor. The model was developed using the Easy Java Simulations (EJS) modeling tool. It is distributed as a ready-to-run (compiled) Java archive. Double clicking the ejs_mech_DrivenMassAndSpringMesh.jar file will run the program if Java is installed.

Christian, Wolfgang

2010-10-11

392

WELDON MEMORIAL PRIZE Past Prize-winners  

E-print Network

Goring; BSc, MD, London 1914-17 Suspended 1920 James Arthur Harris; PhD, Washington University, St Louis Professor Joe Felsenstein, (BS, Zoology, University of Wisconsin; PhD, Department of Zoology, University

Goldschmidt, Christina

393

Evaluating the Community Health Legacy of WWI Chemical Weapons Testing  

Microsoft Academic Search

Spring Valley, Washington, DC, was built over a World War I chemical weapons development site. Testing activities caused wide\\u000a dispersal of arsenic in soil and waste disposal resulted in localized subsurface contamination. Spring Valley presents an\\u000a interesting case study, a contaminated physical environment, but a strongly health-protective social environment. To address\\u000a a possible healthy community bias we selected a nearby

Mary Fox; Frank Curriero; Kathryn Kulbicki; Beth Resnick; Thomas Burke

2010-01-01

394

Spring Deposits and Mud Volcanoes on Mars  

NASA Astrophysics Data System (ADS)

We report evidence for spring deposits in Vernal Crater, Arabia Terra. The Vernal structures are low mounds, each approximately 250 m by 500 m in extent, with terraced flanks, apical depressions, river-like channels, concentric fractures, and elliptical tonal anomalies. All of these features are common in terrestrial springs such as the Dalhousie complex in Australia. The structures occur in an apparent unit of interdune, water-laid sediment and are associated with evidence of subsurface fluid flow in sets of aligned outcrops. The Vernal springs may be part of a larger complex of spring deposits and lineations, suggesting that fluid flow in this region was relatively extensive. The structures in Vernal Crater are coated with a thin layer of dust, which prevents mineral identification from orbit. In an attempt to find evidence for additional spring mounds, we conducted a survey of nearly 2,000 locations for which CRISM spectral images are available. We used CRISM data to identify dust-free, hydrated areas and HiRISE, CTX, and MOC images to evaluate morphology. This study covered all longitudes and latitudes from 50N to 70S, except near Tharsis where data were analyzed south of 15S. No location exhibited morphological features that closely resembled those in Vernal Crater, suggesting that these putative spring mounds are not common in the highlands of Mars. Our search led us to concentrate on a dust-free area, centered at 41.8N, 332.5E in Acidalia Planitia where Farrand et al. (2005) identified features resembling spring mounds or mud volcanoes. Tanaka et al. (2005) mapped this region as part of the Early Amazonian Vastitas Borealis Unit, interpreted as reworked sediments from outflow channels and highland sources. We mapped over 20 high-albedo pitted domes in the area covered by one HiRISE frame, with dome diameters ranging from 350 m to 1 km. Nearby, similar domes have measured heights ranging from 36 to 65 m. The dome material is darker in THEMIS nighttime IR than the surrounding plains, indicating that the domes have relatively lower thermal inertia. The dome material is also very smooth, and appears smeared across the textured plains and in local depressions as if it were emplaced by low viscosity flows. CRISM spectral data (Leah Roach, Brown Univ.) were used to assess the mineralogy of selected features. Dome spectra exhibit a steep shoulder from 0.4 to 0.6 microns and are generally featureless in the near IR, overall resembling the spectra of bright Martian soil. The steep shoulder is due to the oxidization of iron to Fe3+. Dome spectra do not exhibit evidence for hydrated minerals or precipitates such as carbonates or silica. While a range of origins has been suggested for the Acidalia domes, we believe that they are most consistent with a mud volcano analog. A volcano or pseudocrater origin is unlikely, as no lava flows or volcanic features are observed in the vicinity. A spring mound origin is also unlikely, due to the absence of hydrated or spring precipitate mineral signatures in the CRISM spectral data as well as the absence of terracing, channels, and circumferential faults that typify the Vernal springs. In addition to the Vernal springs and the Acidalia mud volcanoes, several other recent studies have pointed to evidence of subsurface fluid flow. These include the large spring deposits proposed by Rossi et al. (2008), the resistant knobs in Candor Chasma (Chan, 2008), and the bleached zones along faults in Valles Marineris (Treiman, 2008). Together, these features are changing our understanding of the hydrologic history of Mars. class="ab'>

Allen, C. C.; Oehler, D. Z.; Baker, D. M.

2008-12-01

395

Informing geobiology through GIS site suitability analysis: locating springs in mantle units of ophiolites  

NASA Astrophysics Data System (ADS)

Springs sourced in the mantle units of ophiolites serve as windows to the deep biosphere, and thus hold promise in elucidating survival strategies of extremophiles, and may also inform discourse on the origin of life on Earth. Understanding how organisms can survive in extreme environments provides clues to how microbial life responds to gradients in pH, temperature, and oxidation-reduction potential. Spring locations associated with serpentinites have traditionally been located using a variety of field techniques. The aqueous alteration of ultramafic rocks to serpentinites is accompanied by the production of very unusual formation fluids, accessed by drilling into subsurface flow regimes or by sampling at related surface springs. The chemical properties of these springs are unique to water associated with actively serpentinizing rocks; they reflect a reducing subsurface environment reacting at low temperatures producing high pH, Ca-rich formation fluids with high dissolved hydrogen and methane. This study applies GIS site suitability analysis to locate high pH springs upwelling from Coast Range Ophiolite serpentinites in Northern California. We used available geospatial data (e.g., geologic maps, topography, fault locations, known spring locations, etc.) and ArcGIS software to predict new spring localities. Important variables in the suitability model were: (a) bedrock geology (i.e., unit boundaries and contacts for peridotite, serpentinite, possibly pyroxenite, or chromite), (b) fault locations, (c) regional data for groundwater characteristics such as pH, Ca2+, and Mg2+, and (d) slope-aspect ratio. The GIS model derived from these geological and environmental data sets predicts the latitude/longitude points for novel and known high pH springs sourced in serpentinite outcrops in California. Field work confirms the success of the model, and map output can be merged with published environmental microbiology data (e.g., occurrence of hydrogen-oxidizers) to showcase patterns in microbial community structure. Discrepancies between predicted and actual spring locations are then used to tune GIS suitability analysis, re-running the model with corrected geo-referenced data. This presentation highlights a powerful GIS-based technique for accelerating field exploration in this area of ongoing research.

Bowman, A.; Cardace, D.; August, P.

2012-12-01

396

Sulphur and oxygen isotopic composition of sulphates in springs feeding the Wieprz river and other springs of Lublin Upland and Roztocze.  

PubMed

Springs on Roztocze and Lublin Upland have been studied. Isotopic data are compared with data of chemical analyses. The results of studies allow us to distinguish five types of groundwaters. The differentiation is based upon different lithology; opokas, gaizes, sandy-silty-clay deposits, sands with shell sandstones, marly opokas, marly limestones and 'soft limestones of chalk type. A correlation can be observed between delta34S and the concentration of Ca or Mg ions also a correlation between HCO3- ion concentration and delta18O in sulphates. Probably these correlations are the result of some simultaneous processes, which occur in groundwater. The seasonal variations of the isotopic composition and sulphate concentration were observed in four springs feeding the upper Wieprz. The variations were simultaneous and often similar in these springs. Probably, these variations are caused by the admixture of sulphates coming from shallow water layers (or leached from soil); however the variations of the groundwater level may also change chemical and isotopic composition in groundwater. PMID:12725431

Trembaczowski, A; Swieca, A

2002-12-01

397

Cyanobacterial mats from hot springs produce antimicrobial compounds and quorum-sensing inhibitors under natural conditions  

Microsoft Academic Search

Polar (water) and non-polar (ethyl acetate) extracts from the cyanobacterial layer (top 13mm) of four hot spring microbial\\u000a mats in the Sultanate of Oman were tested for their antibacterial, antidiatom and quorum-sensing inhibitory activities under\\u000a natural conditions. The chemical composition of the active extracts was analysed using gas chromatographymass spectrometry\\u000a (GC-MS). Cyanobacteria within these mats were identified by direct microscopy

Sergey Dobretsov; Raeid M. M. Abed; Sultan M. S. Al Maskari; Jamal N. Al Sabahi; Reginald Victor

398

The chemistry of bottled mineral and spring waters from Norway, Sweden, Finland and Iceland  

Microsoft Academic Search

Twenty-two bottled mineral and spring waters from Norway, Sweden, Finland and Iceland have been analysed for 71 inorganic chemical parameters with low detection limits as a subset of a large European survey of bottled groundwater chemistry (N=884). The Nordic bottled groundwaters comprise mainly CaNaHCO3Cl water types, but more distinct CaHCO3, Na HCO3 and NaCl water types are also offered. The

Bjrn S. Frengstad; Kaj Lax; Timo Tarvainen; ystein Jger; Brge J. Wigum

2010-01-01

399

The Spring kernel: a new paradigm for real-time operating systems  

Microsoft Academic Search

Next generation real-time systems will require greater flexibility and predictability than is commonly found in today's systems. These future systems include the space station, integrated vision\\/robotics\\/AI systems, collections of humans\\/robots coordinating to achieve common objectives (usually in hazardous environments such as undersea exploration or chemical plants), and various command and control applications. The Spring kernel is a research oriented kernel

John A. Stankovic; Krithi Ramamritham

1989-01-01

400

Hydrogeological characterization of peculiar Apenninic springs  

NASA Astrophysics Data System (ADS)

In the northern Apennines of Italy, springs are quite widespread over the slopes. Due to the outcropping of low-permeability geologic units, they are generally characterized by low-yield capacities and high discharge variability during the hydrologic year. In addition, low-flow periods (discharge lower than 1 Ls-1) reflect rainfall and snowmelt distribution and generally occur in summer seasons. These features strongly condition the management for water-supply purposes, making it particularly complex. The "Mulino delle Vene" springs (420 m a.s.l., Reggio Emilia Province, Italy) are one of the largest in the Apennines for mean annual discharge and dynamic storage and are considered as the main water resource in the area. They flow out from several joints and fractures at the bottom of an arenite rock mass outcrop in the vicinity of the Tresinaro River. To date, these springs have not yet been exploited, as the knowledge about the hydrogeological characteristics of the aquifer and their hydrological behaviour is not fully achieved. This study aims to describe the recharge processes and to define the hydrogeological boundaries of the aquifer. It is based on river and spring discharge monitoring and groundwater balance assessment carried out during the period 2012-2013. Results confirm the effectiveness of the approach, as it allowed the total aliquot of discharge of the springs to be assessed. Moreover, by comparing the observed discharge volume with the one calculated with the groundwater balance, the aquifer has been identified with the arenite slab (mean altitude of 580 m a.s.l.), extended about 5.5 km2 and located 1 km west of the monitored springs.

Cervi, F.; Marcaccio, M.; Petronici, F.; Borgatti, L.

2014-09-01

401

Dynamical control of NH and SH winter\\/spring total ozone from GOME observations in 1995-2002  

Microsoft Academic Search

The abnormal high wave activity in austral spring 2002 led to the first observation of a major stratospheric warming in the southern hemisphere resulting in a net winter increase of mid- to high latitude total ozone until September 2002. In previous years chemical ozone depletion inside the Antarctic vortex was sufficiently high to reduce mean total ozone south of 50

M. Weber; S. Dhomse; F. Wittrock; A. Richter; B.-M. Sinnhuber; J. P. Burrows

2003-01-01

402

Landscape-scale variability of acidity and dissolved organic carbon during spring flood in a boreal stream network  

Microsoft Academic Search

Acidity is well known to influence stream biota, but the less well-studied spatial and temporal distributions of acidity are likely to play a larger ecological role than average values. We present data on spatial variability of chemical parameters contributing to acidity during winter baseflow and spring flood periods in Krycklan, a fourth-order boreal stream network in northern Sweden. Fifteen stream

Ishi Buffam; Hjalmar Laudon; Johan Temnerud; Carl-Magnus Mrth; Kevin Bishop

2007-01-01

403

Seasonal variations of 226Ra and 222Rn in mineral spring waters of Aguas da Prata, Brazil  

Microsoft Academic Search

In this paper the activity concentrations of 226Ra and 222Rn were assayed in the mineral spring waters of Aguas da Prata in order to evaluate the seasonal variations of such radionuclides. The results obtained were related to the chemical composition of the water as well as to the lithology of the aquifer and temperature. Higher activity concentrations up to 1.8

Joselene De Oliveira; Barbara Mazzilli; Marian Helena De Oliveira Sampa; Bernadete Silva

1998-01-01

404

Peatland Structural Controls on Spring Distribution  

NASA Astrophysics Data System (ADS)

The species richness of wetland ecosystems' are sustained by the presence of discrete groundwater discharge, or springs. Springs provide thermal refugia and a source of fresh water inflow crucial for survival of many wetland species. The subsurface drivers that control the spatial distribution of surficial springs throughout peatland complexes are poorly understood due to the many challenges peatlands pose for hydrologic characterization, such as the internal heterogeneities, soft, dynamic substrate, and low gradient of peat drainage. This has previously made it difficult to collect spatial data required for restoration projects that seek to support spring obligate and thermally stressed species such as trout. Tidmarsh Farms is a 577-acre site in Southeastern Massachusetts where 100+ years of cranberry farming has significantly altered the original peatland hydrodynamics and ecology. Farming practices such as the regular application of sand, straightening of the main channel, and addition of drainage ditches has strongly degraded this peatland ecosystem. Our research has overlain non-invasive geophysical, thermal, and water isotopic data from the Tidmarsh Farms peatland to provide a detailed visualization of how subsurface peat structure and spring patterns correlate. Ground penetrating radar (GPR) has proven particularly useful in characterizing internal peat structure and the mineral soil interface beneath peatlands, we interpolate the peatland basin at a large scale (1 km2) and compare this 3-D surface to the locations of springs on the peat platform. Springs, expressed as cold anomalies in summer and warm anomalies in winter, were specifically located by combining fiber-optic and infrared thermal surveys, utilizing the numerous relic agricultural drainage ditches as a sampling advantage. Isotopic signatures of the spring locations are used to distinguish local and regional discharge, differences that can be explained in part by the peat basin structure delineated with GPR. The study expands our understanding of complex peat systems and will be used to inform wetland restoration based on hydrodynamic processes; yielding a more successful, resilient restoration and desired ecologic function. Our research demonstrates how the use of GPR in combination with thermal imagery and isotopic analysis can help characterize degraded peatlands, informing a process-based approach to ecological restoration of the site with the ability to monitor changes through time.

Hare, D. K.; Boutt, D. F.; Hackman, A. M.; Davenport, G.

2013-12-01

405

Rapid River Hatchery - Spring Chinook, Final Report  

SciTech Connect

This report presents the findings of the independent audit of the Rapid River Hatchery (Spring Chinook). The hatchery is located in the lower Snake River basin near Riggins Idaho. The hatchery is used for adult collection, egg incubation, and rearing of spring chinook. The audit was conducted in April 1996 as part of a two-year effort that will include 67 hatcheries and satellite facilities located on the Columbia and Snake River system in Idaho, Oregon, and Washington. The hatchery operating agencies include the US Fish and Wildlife Service, Idaho Department of Fish and Game, Oregon Department of Fish and Wildlife, and Washington Department of Fish and Wildlife.

Watson, M.

1996-05-01

406

A Mechanical Analogue for Chemical Potential, Extent of Reaction, and the Gibbs Energy.  

ERIC Educational Resources Information Center

Presents an analogy that relates the one-dimensional mechanical equilibrium of a rigid block between two Hooke's law springs and the chemical equilibrium of two perfect gases using ordinary materials. (PVD)

Glass, Samuel V.; DeKock, Roger L.

1998-01-01

407

Activity of bacteria in water of hot springs from Southern and Central Kamchatskaya geothermal provinces, Kamchatka Peninsula, Russia.  

PubMed

The hot-spring waters of numerous hot springs at the Kamchatka Peninsula, Russia differ in their chemical characteristics and elemental composition. Total bacterial abundance (TBA) as well as enzymatically active and respiring bacteria was enumerated in water samples collected from the Nalychevskie, Oksinskie, Apapelskie, and Dachnye hot springs. 5-Carboxyfluorescein diacetate activity was detected in all water samples and comprised 29-65% of the TBA as determined by 4',6-diamidino-2-phenylindol staining. The respiratory activity of iron-oxidizing bacteria was assayed by 5-cyano-2,3-ditolyltetrazolium chloride reduction. Respiring cells accounted for 9-14% of the TBA, indicating a positive correlation with the number of iron-oxidizing bacteria from the hot-spring biomats. Enumeration of heterotrophic bacteria revealed a high-density bacterial population only in the water of the Apapelskie hot spring, which has a temperature of 36 degrees C. Therefore, it appears that heterotrophic and iron-oxidizing bacteria inhabiting the hot-spring waters are essential for the geochemical processes occurring in hydrothermal systems. PMID:16546359

Belkova, Natalia L; Tazaki, Kazue; Zakharova, Juliya R; Parfenova, Valentina V

2007-01-01

408

Chemical Communication  

NSDL National Science Digital Library

A concise lesson about chemical communication in insects covering both semio and info chemicals. The site includes a short video of grape root borer moths using sex pheromone. Further links on the take the user to visual and auditory communication.

0002-11-30

409

Home Chemicals  

NSDL National Science Digital Library

This lesson provides an introduction to the occurrence and possible risks of household chemical products. Topics include some basic chemistry (how elements combine to form compounds), how chemicals are classified, and the idea of natural, as opposed to synthetic, chemicals. The lesson includes an activity in which students take an inventory of chemical products in their homes and research the possible hazards of some of them using an online resource developed by the National Institutes of Health (NIH).

Fox, Chris

410

76 FR 20992 - Sun Chemical Corp.; Filing of Color Additive Petition  

Federal Register 2010, 2011, 2012, 2013

...Administration [Docket No. FDA-2011-C-0050] Sun Chemical Corp.; Filing of Color Additive...Administration (FDA) is announcing that Sun Chemical Corp. has filed a petition proposing...petition (CAP 1C0290) has been filed by Sun Chemical Corp., 5020 Spring Grove...

2011-04-14

411

Chemical sensor  

NASA Technical Reports Server (NTRS)

A sensor for detecting a chemical substance includes an insertion element having a structure which enables insertion of the chemical substance with a resulting change in the bulk electrical characteristics of the insertion element under conditions sufficient to permit effective insertion; the change in the bulk electrical characteristics of the insertion element is detected as an indication of the presence of the chemical substance.

Rauh, R. David (Inventor)

1990-01-01

412

Chemical microsensors  

NASA Astrophysics Data System (ADS)

Recent developments are discussed in the field of chemical microsensors that attempt to marry physical transducers based on microelectronic and optoelectronic technologies with thin films and coatings that serve as chemical transducers. Microelectronic silicon chemical sensors, acoustic wave sensors, microsensors based on optical fibers, and electrochemical microsensors are considered. Both technological achievements and problems that remain to be solved are addressed.

Hughes, R. C.; Ricco, A. J.; Butler, M. A.; Martin, S. J.

1991-10-01

413

Parameters affecting sag resistance in spring steels  

NASA Astrophysics Data System (ADS)

Recent trends toward reducing the weight of automobile suspension springs have led to the development of a number of microalloyed steels and a variety of processing treatments which have claimed to improve the sag resistance of springs while increasing their operating stresses. More often than not, however, the subtle effects of varying levels of hardness and prior austenite grain size, as well as small but significant differences in critical elements such as Si, are over-looked in comparing these new steels with the conventional grades. Hysteresis loops measured in tension (related to the Bauschinger effect) were used to determine the relaxation behavior of a number of microalloyed and standard grade spring steels. The effects of hardness level, austenitizing temperature, prior austenite grain size, and warm prestressing on the Bauschinger hysteresis loops were also established. Silicon was found to be the most important factor influencing the size of the hysteresis loops; the greater the Si content of the steel (up to 2.2 pct), the larger the loops at a given strength level and the greater the expected relaxation resistance of the spring. The standard AISI 9261 steel containing 2.2 pct Si showed the same Bauschinger loops as the microalloyed grades containing Nb and V at the same hardness of 50 HRC.

Assefpour-Dezfuly, M.; Brownrigg, A.

1989-10-01

414

Department of Psychology Seminars & Events Spring 2013  

E-print Network

@ community colleges · Review future registration · Much more.... Choose 1 Session & RSVP Room 119 PsychologyDepartment of Psychology Seminars & Events Spring 2013 Events Date & Time Location Transfer Student Information Session Friday, January 25 12Noon ­ 1:00 PM 119 Psychology Building PSY Service & Intern Fair

Liu, Taosheng

415

Wetlands Ecology and Management Spring 2007  

E-print Network

WFS 340 Wetlands Ecology and Management Spring 2007 Instructor: Dr. Matthew Gray (mgray11@utk Text: Wetlands, 2000, 3rd edition (ISBN 047129232X) Authors: William J. Mitsch and James C. Gosselink Course Goal: To expose students to the basic principles of wetland ecology and management via class

Gray, Matthew

416

Veterinary Report Spring 2005 Dr. Daniel Rock,  

E-print Network

Veterinary Report � Spring 2005 q Dr. Daniel Rock, an expert in viral disease research, came aboard and host range, with particular emphasis on high-consequence viral diseases such as African swine fever, clas- sical swine fever, foot-and-mouth disease, rinderpest, and exotic poxviruses. "My laboratory has

Gilbert, Matthew

417

Spring 2014 CAN WE FIX HEALTH CARE?  

E-print Network

Spring 2014 CAN WE FIX HEALTH CARE? HEALTH ECONOMICS & POLICY 1 Dr. Katie Fitzpatrick UCOR1630 in health care policy. You will analyze health-related issues in the news, create and interpret graphical- plexity of the health care system and an appreciation of the tradeoffs in health care policy. Course

Carter, John

418

Nonlinear Resonance and Duffing's Spring Equation  

ERIC Educational Resources Information Center

This note discusses the boundary in the frequency--amplitude plane for boundedness of solutions to the forced spring Duffing type equation. For fixed initial conditions and fixed parameter [epsilon] results are reported of a systematic numerical investigation on the global stability of solutions to the initial value problem as the parameters F and

Fay, Temple H.

2006-01-01

419

University at Albany Magazine Spring 2014 Entrepreneurs  

E-print Network

University at Albany Magazine · Spring 2014 Intrepid Entrepreneurs Jonathan Rochelle, B.S.'85, co and other alumni entrepreneurs in this issue of UAlbany. #12;Big Picture Students got into the spiritCoopers. 9 Intrepid Entrepreneurs Entrepreneurship isn't for the faint of heart. Starting a business takes

Kidd, William S. F.

420

Computer Science Graduation Requirements Checklist Spring 2006  

E-print Network

Computer Science Graduation Requirements Checklist ­ Spring 2006 Computer Science Courses Course Gr. Sem. Comments CSE 113 Foundations of Computer Science I CSE 114 Computer Science I [prerequisite: CSE 110] CSE 213 Foundations of Computer Science II CSE 214 Computer Science II CSE 219 Computer Science

Zadok, Erez

421

SYLLABUS: PHYSICS 8120 PLASMA PHYSICS SPRING 2005  

E-print Network

SYLLABUS: PHYSICS 8120 PLASMA PHYSICS SPRING 2005 Instructor: Prof. Paul J. Wiita Class Timings at an appropriate level. Other texts to which you may wish to refer: 1) Peter A. Sturrock, Plasma Physics 2) Nicholas A. Krall & Alvin W. Trivelpiece, Principles of Plasma Physics 3) Lyman Spitzer, Jr., Physics

Wiita, Paul J.

422

BUILDING A PHARMACEUTICAL CARE PRACTICE Spring 2014  

E-print Network

Page 1 BUILDING A PHARMACEUTICAL CARE PRACTICE Phar 6219 Spring 2014 2 credits Wednesday 1 practice and to develop a professional practice plan that allows the student to provide pharmaceutical care after graduation. 2) To understand the practice of pharmaceutical care well enough to teach others

Thomas, David D.

423

Spring 2012 www.mannlib.cornell.edu  

E-print Network

Spring 2012 www.mannlib.cornell.edu MANN GOES MOBILE BOOK TALK: ACCUMULATING INSECURITY THIS ISSUE- cally display the full Mann website. Accumulating Insecurity: Violence and Dispossession in the Making and containment, which can lead to the impoverishment rather than the nourishment of la- boring bodies. Under

Angenent, Lars T.

424

PRIMARY HUMAN ANATOMY: BIOL20600 SPRING 2014  

E-print Network

1 PRIMARY HUMAN ANATOMY: BIOL20600 SPRING 2014 Instructors: Kit Muma, Rm. 158 CNS, (607) 274 in 118 Willams Hall Required Texts: McKinley, M. and V. O'Loughlin. 2012. Human Anatomy 3rd ed. McGraw-Hill Anatomy and Physiology Revealed 3.0 available at bookstore or on-line at http://www.mhhe.com/sem/apr3

425

EECS 3440 Electronics Lab Spring Semester 2013  

E-print Network

EECS 3440 Electronics Lab Spring Semester 2013 Dr. R. J. King Phone: 530-8188 Office: NI-2064 E, frequency response, negative feedback. Text: "Electronics Lab II," rev. 2, January 2002, R. King, ed. (lab. References: "Electronics Lab I," R. King, ed., 1999 (lab manual for EECS 3400). Retain your copy for access

King, Roger

426

Chem 439: Forensic Chemistry Spring 2014  

E-print Network

Chem 439: Forensic Chemistry Spring 2014 Lecture Meeting 4:00-4:50 PM, Monday, Neckers 328 Laboratory Meetings 12:00-6:00 PM, Thursday, Neckers 409 Textbook Forensic Chemistry, 1st edition, Suzanne Bell (Prentice Hall, 2006) or Forensic Chemistry, 2nd edition, Suzanne Bell (Prentice Hall, 2012

Nickrent, Daniel L.

427

ISE 411 Networks and Graphs Spring 2014  

E-print Network

ISE 411 Networks and Graphs Spring 2014 Instructor: Dr. Ted Ralphs Office: 473 Mohler Lab E-mail: ted@lehigh.edu Office Hours: WR 1-2 PM and by appointment Course web page: http://coral.ie.lehigh.edu/~ted

Ralphs, Ted

428

NRES 725: Plant Physiological Ecology Spring 2013  

E-print Network

M,. Asner GP, Gamon JA, Zarco-Tejada P (2009) Retrieval of foliar information about plant pigmentNRES 725: Plant Physiological Ecology Spring 2013 Papers for May 1, 2013 discussion session:870-877. Jonathon Donald Sims DA, Gamon JA (2002) Relationships between leaf pigment content and spectral

Nowak, Robert S.

429

Ejs CM Lagrangian Pendulum Spring Model  

NSDL National Science Digital Library

The Lagrangian Pendulum Spring model asks students to solve the Lagrangian for a spring-pendulum and then develop a computational model of it. The model framework is distributed as a ready-to-run (compiled) Java archive. Double-clicking the ejs_CM_Lagrangian_pendulum_spring.jar file will run the program if Java is installed. In order to run correctly, the student must add the correct physics to the EJS differential equation solver and parameter definitions. If EJS is installed on your computer, you can right-click within the simulation window and select Open Ejs Model from the pop-up menu. Information about Ejs (Easy Java Simulations) is available at: http://www.um.es/fem/Ejs/. The CM Lagrangian Pendulum Spring model is one of several Easy Java Simulations (Ejs) models used to incorporate computational physics in Classical Mechanics. Ejs, a part of the Open Source Physics Project, is designed to make it easier to access, modify and generate computer models. Additional models can be found by searching ComPADRE for Ejs.

Cox, Anne

2008-06-04

430

CS 302 Data Structures Spring 2013  

E-print Network

at a time and without ever putting a larger disk on top of a smaller one. This child's toy is actuallyCS 302 Data Structures Spring 2013 Programming Assignment 3 Due on Tuesday, March 5 at 2:30 pm A toy that many children play with is a base with three pegs and five disks of different diameters

Gunes, Mehmet Hadi

431

Sussex Anthropology Seminar Series Spring 2014  

E-print Network

Sussex Anthropology Seminar Series Spring 2014 Global Studies Resource Centre Tuesdays, 3.00 ­ 5.00pm January 21st Heonik Kwon (University of Cambridge) History of War and History of Anthropology Genova (Kings College) The 'European' Question: Reflections on the Stakes of an Anthropology of 'Europe

Sussex, University of

432

ATS 351, Spring 2010 Hurricanes -60 points  

E-print Network

ATS 351, Spring 2010 Lab #12 Hurricanes - 60 points Hurricane Structure (14 points) 1. (4 points the direction of rotation of the hurricane (at low levels ­ you may draw arrows if you wish). 2. (10 points) Why are skies often clear in a hurricane's eye? #12;Formation and Development (18 points) 3. (2 points) Why

Rutledge, Steven

433

OATYC Journal, Fall 1990-Spring 1991.  

ERIC Educational Resources Information Center

Published by the Ohio Association of Two-Year Colleges, the "OATYC Journal" is designed to provide a medium for sharing concepts, methods, and findings relevant to the classroom, and an open forum for the discussion and review of problems. This 16th volume of the journal, consisting of the fall 1990 and spring 1991 issues, contains the following

Fullen, Jim, Ed.

1991-01-01

434

DEAN'S LIST HONORABLE MENTION Spring Semester 2010  

E-print Network

DEAN'S LIST HONORABLE MENTION Spring Semester 2010 Brown, Skyler Joseph Budinoff, Hannah D. Buzimkic, Ena Campbell, Jesse Alexander Campbell, Jonathan A. Carlotto, Colleen R. Carvallo, Francisco Cureton, David Wayne Davis, Trent Wilford Davis, Wyatt Joseph DeRosa, Sean Edward Dettmer, Lance D. Dixit

Wong, Pak Kin

435

Non-Linear Spring Equations and Stability  

ERIC Educational Resources Information Center

We discuss the boundary in the Poincare phase plane for boundedness of solutions to spring model equations of the form [second derivative of]x + x + epsilonx[superscript 2] = Fcoswt and the [second derivative of]x + x + epsilonx[superscript 3] = Fcoswt and report the results of a systematic numerical investigation on the global stability of

Fay, Temple H.; Joubert, Stephan V.

2009-01-01

436

Elder Care Program Spring 2012 Workshops  

E-print Network

relaxation, whole body movement and better balance to prevent falls, increase mobil- ity, build confidenceElder Care Program Spring 2012 Workshops ENROLL ONLINE: AT THE UCB LEARNING CENTER http and create a feeling of wellbeing. Keith Thomas, Chinese Health Practitioner Caring for an Elder with Memory

Doudna, Jennifer A.

437

Spring 2012 Variable Topics in Women's Studies  

E-print Network

Spring 2012 Variable Topics in Women's Studies Women's Social Movements in Muslim Contexts WS 3998 The greatest challenges for women in Muslim countries are fundamentalism and the limitations of citizenship's Empowerment in Muslim Context (WEMC). Finally, as an Iranian women's rights leader for more than twenty

Holsinger, Kent

438

Internship Administration (Policy effective Spring 2013)  

E-print Network

Internship Administration (Policy effective Spring 2013) The purpose of this policy is to provide or repository for both non-credit and credit bearing internships. Employers and organizations wishing to post an internship opportunity have the option to contact the Career Center and indicate their interest in a Siena

439

Search Engine Technologies CS 5319, Spring 2007  

E-print Network

Search Engine Technologies CS 5319, Spring 2007 Nigel Ward Sample Project Ideas 1. I would like fair projects. 4. Edith thinks that a search engine probably should give higher weight to terms for children, primarily in terms of being easy to read, for example for doing background research for science

Ward, Nigel

440

At the School of Architecture SPRING 2014  

E-print Network

PICK At the School of Architecture Course Electives SPRING 2014 #12;SARC SARC 3102 / 5102 THE ARTS Thecourseisdesignedasabroadconsideration of multiple issues surrounding the Arts in our public policies. With guest speakers, artists for the Arts at UVA, to be presented to the Vice Provost for the Arts late in the semester (to be confirmed

Acton, Scott

441

spring 2010 Rochester Institute of Technology  

E-print Network

spring 2010 Rochester Institute of Technology Chester F. Carlson Center for Imaging Science Munsell.cis.rit.edu/fairchild/WhyIsColor/Questions/2-1.html>. " " #12;Farhad Abed, Color Science Ph.D. Student I received my BS in textile engineering from Isfahan University of Technology in 2002. There was the first place I got involved and interested

Zanibbi, Richard

442

Psychology 380: Cognitive Psychology Spring 2008  

E-print Network

Psychology 380: Cognitive Psychology Spring 2008 San Diego State University Instructor: Brock: Cognition: The Thinking Animal, Daniel Willingham (3rd Ed.) Prerequisite for this course: Psychology 101: Introduction to Psychology Goals for this course: Cognitive psychology is concerned with mental processes

Gallo, Linda C.

443

WinterSpring 2013 BOSTONIABOSTONIA Alum Profile  

E-print Network

Winter�Spring 2013 BOSTONIABOSTONIA Alum Profile wakes residents of cities as populous as New York earned a master's degree in environmental studies from Prescott College. In her work with conservation the animals with water, shining bright lights, throwing objects, and even chasing the coyotes away. The maneu

Goldberg, Bennett

444

UO Psychology 607 Graduate Seminar Spring 2010  

E-print Network

and the Spartans fought the Peloponnesian war. Ch. 4, Terror (pp. 89-121). New York: Random House. Week 3, April 13UO Psychology 607 Graduate Seminar Spring 2010 Trauma of War Instructors: Holly Arrow, Pamela of the trauma of war has undergone enormous change over the last century. In this seminar we will read current

Lockery, Shawn

445

Cold Spring Harbor Fish Hatchery and Aquarium  

NSDL National Science Digital Library

Largest living collection of New York State freshwater reptiles, fish and amphibians. Educational programs available by appointment; teachers receive advance packet. In-school programs available during part of the year. Fees apply (for non-members), membership information available on website. Wheelchair accessible. Located Cold Spring Harbor, New York.

446

Environmental Design Curriculum Fall Semester Spring Semester  

E-print Network

Environmental Design Curriculum 1 1st Year Fall Semester Spring Semester Course Credits Instructor Course Credits Instructor General Education courses (recommended gen ed: EnvirDes 140) 3 Adjunct/M acDonald EnvirDes 205 Dynamics of Human Habitation 4 Pader General Education courses 10-12 Total credits 14

Massachusetts at Amherst, University of

447

Department of Visual Art Spring 2009  

E-print Network

, Social Science, and Natural Science or Math 3 hours each Natural Science courses must have a single areas of Humanities, Social Science, Natural Science or Math. History of Art 15 hours Art SurveyDepartment of Visual Art Spring 2009 Art BFA: Painting, Printmaking, Sculpture, Expanded Media 124

448

Geography & Regional Development Speaker Series Spring 2008  

E-print Network

Geography & Regional Development Speaker Series Spring 2008 January 18th - Leila Harris (University', and geographies of environmental politics January 25th - Jenny Lee (University of Arizona) Departmental climate and student experiences in graduate geography programs February 1st - Deborah Thien (California State - Long

Wright, Dawn Jeannine

449

Cloud Microphysics Spring 2013 **odd years?**  

E-print Network

ATS724 Cloud Microphysics (2-0-0) Spring 2013 **odd years?** Prerequisites: ATS620, ATS621; Ph, as the class will involve designing and building a simple cloud microphysical model. Course Description: **Sue and observations of nucleation, mechanisms of cloud droplet-spectra broadening, precipitation particle growth

450

MSU Departmental Assessment Report Spring 2008  

E-print Network

.D. in Ecology and Environmental Sciences (cross-college) #12;Update Report: Student Outcomes Assessment Plan and Environmental Sciences (LRES) implemented our student outcomes assessment plan during Spring, 2004. The Plan included preparing tools for dissemination to undergraduate and graduate students to obtain feedback

Maxwell, Bruce D.

451

Spring 2009 Department of Visual Art  

E-print Network

Spring 2009 Department of Visual Art Design BFA: Textiles 124 credit hours minimum Including 45____ ADVANCED BASIC DESIGN CORE 15 hrs ABDS 214 Introduction to Weaving 3____ ABDS 215 Textile Handprinting (FA only) 3____ ABDS 316 Screenprinting Textiles(SP only) 3____ ABDS 313 Fiber Forms 3____ ABDS Elective 3

452

Tried and True: Springing into Linear Models  

ERIC Educational Resources Information Center

In eighth grade, students usually learn about forces in science class and linear relationships in math class, crucial topics that form the foundation for further study in science and engineering. An activity that links these two fundamental concepts involves measuring the distance a spring stretches as a function of how much weight is suspended

Darling, Gerald

2012-01-01

453

Cold Spring Harbor Laboratory Cancer Center  

Cancer.gov

Cold Spring Harbor Laboratory (CSHL) initiated work on a DNA tumor virus research program in 1969. This successful program expanded to further study of viruses and, in the early 1980s, the Centers work on cancer research expanded into additional areas. These endeavors formed the foundation for the CSHL Cancer Center which became an NCI-designated cancer center in 1987.

454

Spring into Art: 87 Eclectic Titles  

ERIC Educational Resources Information Center

Although fall has always been "the" season of art books, spring catalogs--which for most art publishers stretch between January and June--are replete with intriguing and, in some cases, even groundbreaking new publications. The quality of the reproductions and scholarship continues to impress, but so does the growing diversity of subjects, as more

Roncevic, Mirela

2010-01-01

455

14 Spring 2010 By Joseph Kays  

E-print Network

the globe to study the unique toxins they produce. Also called blue-green algae because of their resemblance weapons against cancer and other diseases C 14 Spring 2010 #12;Explore 15 Photoillustration solvents to tease out a mixture of different compounds. "This crude extract may contain hundreds

Guo, Jing

456

MICROBIAL PATHOGENESIS JOURNAL CLUB Spring 2013 Schedule  

E-print Network

MICROBIAL PATHOGENESIS JOURNAL CLUB Spring 2013 Schedule DATE PRESENTER JOURNAL ARTICLE TIME Jan 3; 493 (7430):51-5. doi: 10.1038/nature11724. Epub 2012 Dec 12 12:00 PM - 1:00 PM Dental School 2012 Aug 4. 12:00 PM - 1:00 PM Dental School Room 7105 February 14th Sergio Mojica CPAF: a Chlamydial

Weber, David J.

457

Winter/Spring 2012 January June  

E-print Network

services are located in downtown Milwaukee ­ the heart of the city's business and commercial district. SCE of our Spring Writers Festival and the 3-year anniversary of the Women Leaders Confer- ence! We are also ______________ 18 (now human resources) training _______________________ 19 women's leadership ______________ 20

Saldin, Dilano

458

Animal Matters Spring 2014 Seminar Series from  

E-print Network

with the American Society for Lab Animal Practitioners Animal Testing, Animal Research & Alternatives: A FutureAnimal Matters Spring 2014 Seminar Series from Tufts Center for Animals and Public Policy for Animals and Public Policy (1983-1997). His history with animal research issues dates back to a stint

Dennett, Daniel

459

Animal Matters Spring 2014 Seminar Series from  

E-print Network

with American Society for Lab Animal Practitioners Animal Testing, Animal Research & Alternatives: A FutureAnimal Matters Spring 2014 Seminar Series from Tufts Center for Animals and Public Policy) was the founder and first and longest-serving director of the Tufts Center for Animals and Public Policy (1983

Dennett, Daniel

460

Bioinformatics and modeling laboratory Spring 2007  

E-print Network

GENE4220L Bioinformatics and modeling laboratory Spring 2007 Course description: Hands-on look at the role of bioinformatics in genetic and genomic analyses. This combination lecture/laboratory course, Proteomics and Bioinformatics, Second Edition by Campbell and Heyer, Benjamin Cummings, 2006. It is available

Arnold, Jonathan

461

Math 4900 / 6900 Spring 2007 ROTH'S THEOREM  

E-print Network

Math 4900 / 6900 Spring 2007 ROTH'S THEOREM In this note we give a self-contained proof of the second most famous theorem of Klaus Roth, namely the very special case of Szemer´edi's theorem (the density version of van der Waerden's theorem) where the arithmetic progressions are of length three. Roth

Lyall, Neil

462

SPRING 2013 CRASH Program's Popularity Grows  

E-print Network

are committed to promoting vehi- cle and driver safety for the protection of our military members and their fami safety for the protection of our military members and their families." -- Joel Camarano, USAA ExecutiveSPRING 2013 CRASH Program's Popularity Grows New Study Shines Light on Pavement Markings and Safety

463

SPRING,1993 VOLUME 7, NUMBER 3  

E-print Network

today to a teen-ager leaving home for the first time, off to the adventure of a liberal education? He..-- --- SPRING,1993 Student Lives Mission Viejo Campus More Budget Woes VOLUME 7, NUMBER 3 A Tale, heading for Fullerton where I have an internship in the College Legal Clinic. On Mondays, Tuesday

de Lijser, Peter

464

Spring 2012 Newsletter Annual Virginia Network Conference  

E-print Network

$tart$mart: How I Negotiated my First Salary Women in Sports Medicine event update CongratulatingSpring 2012 Newsletter Annual Virginia Network Conference Welcoming Kim Hobbs to the Women's Center! Saying Goodbye to the Women's Center SAVES: In Conversation with Jen Underwood Women's Month 2012

Virginia Tech

465

Soil and Water Conservation Spring 2014  

E-print Network

1 SWS 4233 Soil and Water Conservation 3 Credits Spring 2014 Instructor Susan Curry scurry, government conservation programs; water conservation, irrigation, drainage and salinity; stormwater of the interconnectedness of soil and water conservation. The course focusses on soil and water management as it relates

Ma, Lena

466

CHEM /8853 1 CHEM 8853, Spring,  

E-print Network

, the incorporation of selectively reactive functional groups in living systems, and sample applications. In addition uncertain 8 Feb 25, 27 Installation of addressable tags 9 Mar 4, 11 Operating in vivo Mar 6 no lecture 10 Mar 13, 25 Reversible reactions and cleavable connections Mar 18, 20 Spring break, no lecture 11

Sherrill, David

467

Public Health Policy Spring Quarter 2013  

E-print Network

PH 449 Public Health Policy Spring Quarter 2013 Wednesdays 6-9pm Lurie Searle Seminar Room Margie development and analysis have an impact on the public's health. The course is designed to provide students with skills for collecting, analyzing and communicating information on public health policy issues using

Contractor, Anis

468

PHYSICS 5705 --STATISTICAL MECHANICS Syllabus --Spring 2013  

E-print Network

PHYSICS 5705 -- STATISTICAL MECHANICS Syllabus -- Spring 2013 Instructor: Uwe C. T¨auber Office, 10.45 - 11.45 a.m. Recommended texts: Statistical Mechanics, 2nd ed., by F. Schwabl (Springer, 2006); Statistical Mechanics, 2nd ed., by R.K. Pathria (Butterworth-Heinemann, 1996). Also recommended: Fundamentals

Täuber, Uwe Claus

469

Physics 219 Spring 2006 Statistical Mechanics  

E-print Network

Physics 219 Spring 2006 Statistical Mechanics Instructor: Peter Young Office: 212 ISB Telephone/ TOPICS This is a graduate level course in statistical mechanics. The course will start with basic topics and is fairly inexpensive) is Equilibrium Statistical Mechanics by M. Plischke and B. Bergesen

Young, A. Peter

470

SAS HONORS SEMINAR SPRING SEMESTER 2009  

E-print Network

, Tiede (popular science magazine of Finland), Muy Interesante (pop- ular science magazine of SpainSAS HONORS SEMINAR SPRING SEMESTER 2009 Creating Art and Discovering Science Through Visualization Room - College Avenue Campus Credit: 3 POLYNOMIOGRAPHY Bahman Kalantari Professor of Computer Science

471

Spring 2011 ART 492: ART HISTORY SEMINAR  

E-print Network

the events surrounding the Spanish Conquest of Mexico, and the artistic and architectural traditionsSpring 2011 ART 492: ART HISTORY SEMINAR: Mexico in the Age of Conquest (3 credits) Dr. Catherine of Conquest. It then turns to examine the sophisticated new visual vocabulary forged in the aftermath

472

Orbit stabilization in SPring8 storage ring  

Microsoft Academic Search

Stability of electron orbit is one of the most important properties to achieve brilliant photon beams for third generation synchrotron radiation sources. In the design of a SPring-8 storage ring, many ideas for orbit stabilization were thus considered. Consequently, without any correction, electron orbit stability of about 50 ?m per day is obtained. Since a main part of the orbit

N. Kumagai; H. Ohkuma; K. Soutome; M. Takao; H. Tanaka

1999-01-01

473

SPRING / SUMMER 2012 + Early education trifecta  

E-print Network

SPRING / SUMMER 2012 + Early education trifecta + Teacher education redesign + Olympic history-teaching stars in teacher education redesign 18 I am here to hear your story Research on ambiguous loss helps and social standards of the Forest Stewardship CouncilTM (FSC® ) and comes from responsibly managed forests

Blanchette, Robert A.

474

Vanderbilt University's Peabody College spring 2007  

E-print Network

Vanderbilt University's Peabody College spring 2007 Responsiveness to Intervention Peabody Stress 12 Top Tier Special education faculty pioneer Responsiveness to Intervention Quick Facts on RTI the first cohort of the col- lege's redesigned Ed.D. program for educational leaders, also earned

Palmeri, Thomas

475

Astronomy 142: Spring 2008 The Evolving Universe  

E-print Network

Astronomy 142: Spring 2008 The Evolving Universe: Recent Theories and Observations in Modern Astronomy INSTRUCTOR: Diane Friend E-MAIL: diane.friend@umontana.edu PHONE: 243-4299 (Phys./Astr. dept. office: 243-2073) OFFICE: CHCB 129 (inside the Physics/Astronomy dept. office) OFFICE HOURS: M 10-11 & 1

Vonessen, Nikolaus

476

Instructions for Zoology TA Application Spring 2014  

E-print Network

Instructions for Zoology TA Application Spring 2014 1. IMPORTANT! Please make sure to put your the SPEAK TEST to be considered for a TA position. After the interviews, Zoology Department will schedule. Please keep in mind that Zoology graduate students are often assigned to TA the upper level courses

Turner, Monica G.

477

Revised Spring 2008 NIH Public Access Policy  

E-print Network

Revised Spring 2008 NIH Public Access Policy Notice Number: NOT-OD-08-033 - (See Notice NOT-OD-08-161 (Consolidated Appropriations Act, 2008), the NIH voluntary Public Access Policy (NOT-OD-05-022) is now mandatory shall implement the public access policy in a manner consistent with copyright law. Specifics 1. The NIH

478

EPICS 151 Spring 2014 Group Bierstadt  

E-print Network

Article: Gopnik, A. (2012). Scientific thinking in young children: theoretical advances, empiricalEPICS 151 Spring 2014 Group Bierstadt Article: Nag, S., Katz, J. G., & Saenz-Otero, A. (2013: Educational toys and games for children of all ages. http://www.justchildsplay.co.uk/science-toys #12;Group

479

Titan Parents Association Scholarship Spring 2012  

E-print Network

Titan Parents Association Scholarship Spring 2012 Amount: $500 Established by: Titan Parents Association This program was established by the Cal State Fullerton Titan Parents Association. Scholarship campaigns and Titan Parents programs and events. Funds must be used for the upcoming academic semester

de Lijser, Peter

480

DIVISION OF BIOLOGY SEMINARS SPRING 2014  

E-print Network

DIVISION OF BIOLOGY SEMINARS SPRING 2014 Seminars are in Ackert 221 at 4:00 PM unless otherwise Michael Travisano University of Minnesota Brad Olson Fri ­ Feb 14 Walter Dodds Division of Biology ­ KSU Ding Kansas University Medical Center Stella Lee Fri ­ May 2 Keiko Torii University of Washington

Kaufman, Glennis A.

481

Adding and Subtracting spring time games!  

NSDL National Science Digital Library

Start spring time off with adding and subtracting by clicking on a link below! Think fast and Blast Away Addition! Solve the problems by clicking on the correct answers and Subtract away to uncover the picture! Type in the correct answers to the addition problems and Pop the Balloons! ...

Barclay, Ms.

2010-03-02

482

Gap Analysis. Student Satisfaction Survey, Spring 1995.  

ERIC Educational Resources Information Center

In spring 1995, College of the Desert, in California, undertook a study to determine the perceptions of students at both its Copper Mountain and Palm Desert campuses regarding college services. A representative sample of students were administered a 7-point attitude scale (Student Satisfaction Survey developed by Noel-Levitz Centers, Inc.) both

Breindel, Matthew

483

Department of Psychology Spring 2012 Colloquium Schedule  

E-print Network

, Department of Anesthesiology Co-Occurring Pain and Obesity: Using Pediatric Psychology to Make a Difference 3Department of Psychology Spring 2012 Colloquium Schedule 1/26 Michael McCrea, Ph.D. Professor Effects 2/9 Stephen Guastello, Ph.D. Professor Marquette University, Department of Psychology Cognitive

Sanders, Matthew

484

University of Bath Travel Survey Spring 2013  

E-print Network

.3% of all respondents were aware of the car-share parking permits, and 11.5% were aware of the electric carUniversity of Bath Travel Survey 2012/13 Spring 2013 #12;2 Contents Executive Summary & Interest in Car-sharing scheme use......................................19 Support for methods of reducing

Burton, Geoffrey R.

485

GIS Analysis GIS 6116 -Spring 2015  

E-print Network

GIS Analysis GIS 6116 - Spring 2015 School of Forest Resources and Conservation Geomatics Program _______________________________________________________________________________________ 1 GIS 6116 (GIS Analysis) INSTRUCTORS: Dr. Hartwig Henry Hochmair (FLREC Fort Lauderdale) Dr. Amr Information Analysis (2nd ed.). Hoboken, New Jersey, WIley & Sons. - Mitchell A (2005). The ESRI Guide to GIS

Watson, Craig A.

486

UNM Alternative Spring Break Participant Application  

E-print Network

AND ILLEGAL DRUGS POLICY Alternative Spring Break is a unique experience that allows participants to immerse, personal safety and group cohesion are of concern when alcohol and other drugs are consumed of the Alcohol Policy can include: 1. A participant misses any scheduled event because of the effects of alcohol

New Mexico, University of

487

CHEMISTRY 597 SYLLABUS FOR SPRING 2014  

E-print Network

of Massachusetts 3/14/14 Spring Break 3/21/14 Plunkett John Anthony, University of Kentucky 3/28/14 TBD 4/4/14 Plunkett Seth Rasmussen, North Dakota State University 4/11/14 Jeanne Stachowiak, University of Texas

Nickrent, Daniel L.

488

ME 872 -Finite Element Methods Spring 2014  

E-print Network

ME 872 - Finite Element Methods Spring 2014 Catalog Description: Theory and application of the finite element method to the solution of continuum type problems in heat transfer, fluid mechanics and Belytschko A First Course in Finite Elements. Suggested only as reference. Thomas J. R. Hughes, The Finite

Diaz, Alejandro

489

Spring 2006 CS 649 1 Sensor Networks  

E-print Network

in boldface) Spring 2006 CS 649 3 · Sensor Types · Passive: Acoustic, Seismic, Magnetic, etc. · Active: Radar Source/Target location · ri Location of sensor i · Signal attenuation coefficient (for acoustic Multiple-Source Localization Using Acoustic Energy Measurements with Wireless Sensor Networks," IEEE

Amir, Yair

490

32 ENGINEERING & SCIENCE SPRING 2013 alumni impact  

E-print Network

isn't a day that goes by that we don't think about Jan," says McNamara. "We believe his inspiration-resolution genome maps. On starting a company, Holmlin says: "Believe in yourself and your idea, then work to get others to believe as well." #12;33SPRING 2013 ENGINEERING & SCIENCE "Caltech has rich history of making

491

Spring 2006 CS 649 1 Sensor Networks  

E-print Network

characteristics of a WSN node · CPU and Memory · Radio · Power · Examples architectures · Telos · Pushpin · XYZ #12;Wide Spectrum of Devices Spring 2006 CS 649 3 · Sensors with implantable RFIDs · Smart-dust size

Amir, Yair

492

MSU Departmental Assessment Report Spring 2008  

E-print Network

MSU Departmental Assessment Report Spring 2008 Department: Earth Sciences Department Head: Stephan/Majors/Options Offered by Department Degrees: Bachelor of Science in Earth Sciences Master of Science in Earth Sciences Doctor of Philosophy in Earth Sciences Options: Undergraduate Geography Geohydrology Geology GIS

Maxwell, Bruce D.

493

MSU Departmental Assessment Update Spring 2007  

E-print Network

MSU Departmental Assessment Update Spring 2007 Department: Earth Sciences Department Head: Stephan