Sample records for talbot county maryland

  1. Preliminary physical stratigraphy, biostratigraphy, and geophysical data of the USGS South Dover Bridge Core, Talbot County, Maryland

    USGS Publications Warehouse

    Alemán González, Wilma B.; Powars, David S.; Seefelt, Ellen L.; Edwards, Lucy E.; Self-Trail, Jean M.; Durand, Colleen T.; Schultz, Arthur P.; McLaughlin, Peter P.

    2012-01-01

    The South Dover Bridge (SDB) corehole was drilled in October 2007 in Talbot County, Maryland. The main purpose for drilling this corehole was to characterize the Upper Cretaceous and Paleogene lithostratigraphy and biostratigraphy of the aquifers and confining units of this region. The data obtained from this core also will be used as a guide to geologic mapping and to help interpret well data from the eastern part of the Washington East 1:100,000-scale map near the town of Easton, Md. Core drilling was conducted to a depth of 700 feet (ft). The Cretaceous section was not penetrated due to technical problems during drilling. This project was funded by the U.S. Geological Survey’s (USGS) Eastern Geology and Paleoclimate Science Center (EGPSC) as part of the Geology of the Atlantic Watersheds Project; this project was carried out in cooperation with the Maryland Geological Survey (MGS) through partnerships with the Aquifer Characterization Program of the USGS’s Maryland-Delaware-District of Columbia Water Science Center and the National Cooperative Geologic Mapping Program. The SDB corehole was drilled by the USGS drilling crew in the northeastern corner of the Trappe 7.5-minute quadrangle, near the type locality of the Boston Cliffs member of the Choptank Formation. Geophysical logs (gamma ray, single point resistance, and 16-inch and 64-inch normal resistivity) were run to a depth of 527.5 ft; the total depth of 700.0 ft could not be reached because of the collapse of the lower part of the hole. Of the 700.0 ft drilled, 531.8 ft of core were recovered, representing a 76 percent core recovery. The elevation of the top of the corehole is approximately 12 ft above mean sea level; its coordinates are lat 38°44′49.34″N. and long 76°00′25.09″W. (38.74704N., 76.00697W. in decimal degrees). A groundwater monitoring well was not installed at this site. The South Dover Bridge corehole was the first corehole that will be used to better understand the geology and

  2. 2. View of Pope & Talbot office and general store, ...

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

    2. View of Pope & Talbot office and general store, facing southeast across Rainier Avenue. Walker-Ames house in right background. - Pope & Talbot Office & General Store, Rainier Avenue, Port Gamble, Kitsap County, WA

  3. 3. View of Pope & Talbot office and general store, ...

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

    3. View of Pope & Talbot office and general store, facing southwest, rear of mill office in right foreground, rear of store in left foreground. Walker-Ames house in left background. - Pope & Talbot Office & General Store, Rainier Avenue, Port Gamble, Kitsap County, WA

  4. Alternative Fuels Data Center: Maryland County Fleet Uses Wide Variety of

    Science.gov Websites

    Alternative FuelsA> Maryland County Fleet Uses Wide Variety of Alternative Fuels to someone by E operates a variety of alternative fuel and advanced technology vehicles. Download QuickTime Video QuickTime Magazine Provided by Maryland Public Television Related Videos Photo of a car Electric Vehicles Charge up

  5. Health Policy Responsiveness: Lessons Learned from Maryland and Prince George's County.

    PubMed

    Sogie-Thomas, Byron; Sankofa, John; Reed, Crystal; Mfume, Kweisi; Doamekpor, Lauren Abla

    2018-04-01

    Effective, timely, and intentional policy efforts can significantly impact and improve the public's health and reduce racial and ethnic health disparities across the nation. Creating and implementing responsive policies at the state and county level is essential to supporting community efforts to improve health behaviors and health outcomes, particularly for communities of color who bear the brunt of disease risk and negative health outcomes. Using policy examples from the State of Maryland and Prince George's County, the largest and wealthiest predominately African-American county in the USA, this case study highlights the importance of state and county policy action when presented with opportunities to affect long-lasting, positive change. We examine each jurisdiction's policy response through the lens of timeliness, intentionality, and effectiveness. At first glance, it would appear that Maryland responded effectively to the rise in tobacco use. Similarly, at face value, it appears that Prince George's County's unchecked rise in obesity rates among African-Americans is an example of nonresponsiveness among local policymakers in the face of an obesity epidemic. However-guided by a more nuanced understanding of "policy responsiveness"-this analysis uncovers a more revealing picture, with important strengths and limitations seen in both policy situations. This analysis raises critical questions about the determinants of jurisdictions' health policy capacity and how policymakers might best be supported in their efforts to build an arsenal of health policies that are timely, effective, and intentional in meeting the needs of vulnerable communities.

  6. The Impacts of the Montgomery County Public Schools' Proposed 2016 Budget on Montgomery County and the State of Maryland Economies

    ERIC Educational Resources Information Center

    Fuller, Stephen S.

    2015-01-01

    The Montgomery County Public Schools (MCPS) is a major source of economic activity within the County with these benefits extending across the State of Maryland. These economic benefits result from MCPS's annual expenditures for new facilities, its outlays for repairs and maintenance, and its spending in support of program and facility operations.…

  7. Predator removal enhances waterbird restoration in Chesapeake Bay (Maryland)

    USGS Publications Warehouse

    Erwin, R. Michael; McGowan, Peter C.; Reese, Jan

    2011-01-01

    This report represents an update to an earlier report(Erwin et al. 2007a) on wildlife restoration on the largest dredge material island project in the United States underway in Talbot County, Maryland (Figure 1) in the mid–Chesapeake Bay region, referred to as the Paul Sarbanes Ecosystem Restoration Project at Poplar Island (www.nab.usace.army.mil/projects/Maryland/PoplarIsland/documents.html). An important component of this largescale restoration effort focused on water birds, as many of these species have undergone significant declines in the Chesapeake region over the past 30 years (Erwin et al. 2007b). The priority waterbird species include common terns (Sterna hirundo), least terns (S. antillarum), snowy egrets (Egretta thula), and ospreys (Pandion haliaetus). Although significant numbers of common terns (more than 800 pairs in 2003), least terns (62 pairs in 2003), snowy egrets (50 or more pairs by 2005), and ospreys (7 to 10 pairs) have nested on Poplar Island since early 2000, tern productivity especially had been strongly limited by a combination of red fox (Vulpes vulpes) and great horned owl (Bubo virginianus) predation. Fox trapping began in 2004, and four were removed that year; no more evidence of fox presence was found in 2005 or subsequently. The owls proved to be more problematic.

  8. Project-based Modules from two STEM Learning Teams in Howard County, Maryland

    NASA Astrophysics Data System (ADS)

    Griffiths, L. N.; Bradley, L. A.

    2011-12-01

    In 2009, two Maryland school districts-Howard County Public School System and Prince George's County Public Schools-and the Goddard Space Flight Center of the National Aeronautics and Space Administration (NASA) partnered with the National Commission on Teaching and America's Future (NCTAF) to develop NASA 21st Century Learning Studios. In 2010, NCTAF expanded the program to include Learning Studios at two additional Maryland school districts (Anne Arundel County Public Schools and Baltimore County Public Schools), partnering with the United States Naval Academy and the University of Maryland. Overall, the focus of these Learning Studios is to combine the expertise of scientists with that of educators through Learning Teams to improve teaching and learning in science, technology, engineering and mathematics (STEM) fields, while delivering project-based modules to be implemented in other school districts. The focus of this paper is to summarize the experience and outcomes from two Learning Teams from the Howard County Public School System. STEM Learning Teams were established at Centennial High School and Hammond High School in Maryland. Each Team worked together for two years to create interdisciplinary units of study for their students with a focus on Earth Science. To maximize student interest, teachers worked with NASA scientists five times a year to develop four learning modules using practical examples and incorporating real scientific observations. A weathering and erosion module challenges students to collect appropriate field observations and determine erosion and deposition rates in a nearby lake. A plate tectonics module requires students to use measures of plate motion from the National Oceanic and Atmospheric Administration to estimate rates of convergence in southern Asia. A third module for lessons in climate change requires students to find open source climate data, determine changes in the atmosphere and estimate anthropogenic impacts. A follow

  9. Nonlinear Talbot Effect and Its Applications

    NASA Astrophysics Data System (ADS)

    Yang, Zhening

    2018-03-01

    Talbot effect, a lenless self-imaging phenomenon, was first discovered in 1836 by H.F. Talbot. The conventional Talbott effect has been studied for over a hundred years. Recently, the rapid development of optical superlattices has brought a great breakthrough in Talbot effect research. A nonlinear self-imaging phenomenon was found in the periodically poled LiTaO3 (PPLT) crystals. [1][2][3] This nonlinear Talbot effect has applications not only in optics but also in many other fields. For example, the phenomenon is realized by frequency-doubled beams, which offers people a new way to enhance the spatial resolution of the self-images of periodic objects. And by observing the self-image of the second harmonic (SH) field on the sample surface, people can detect the domain structure in the crystal without damaging the sample. Throughout this review paper, an overview of nonlinear Talbot effect and two applications of this phenomenon is presented. Breakthroughs like achieving a super-focused spot and realizing an acousto-optic tunable SH Talbot illuminator will be introduced as well.

  10. A Collaborative Effort: Peer Review and the History of Teacher Evaluations in Montgomery County, Maryland

    ERIC Educational Resources Information Center

    Sullivan, Jeremy P.

    2012-01-01

    In this article, Jeremy Sullivan explores the history of teacher evaluations in Montgomery County, Maryland. He describes how, over the course of three decades, the Montgomery County Education Association (MCEA) established itself as a strong and powerful professional association and leveraged its power to institutionalize a more collaborative…

  11. 75 FR 77660 - National Register of Historic Places; Notification of Pending Nominations and Related Actions

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-13

    ...--Proctor House, 133 First Ave, Twin City, 10001049 MARYLAND Talbot County Miller's House, Old Wye Mills Rd... Lincoln County Lincoln Hotel, 301 W Sherlock St, Harrington, 10001044 Skagit County Northern State Hospital, Roughly bounded by Thompson Dr to the S, Hemlick Dr to the E, Hub Dr to the W, and \\1/4\\ mi S of...

  12. 77 FR 59156 - Approval and Promulgation of Air Quality Implementation Plans; Maryland; The Washington County...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-26

    ... Promulgation of Air Quality Implementation Plans; Maryland; The Washington County 2002 Base Year Inventory... approve the fine particulate matter (PM 2.5 ) 2002 base year emissions inventory portion of the State of... proposing to approve the 2002 base year PM 2.5 emissions inventory for Washington County submitted by MDE in...

  13. Mapping forest types in Worcester County, Maryland, using LANDSAT data

    NASA Technical Reports Server (NTRS)

    Burtis, J., Jr.; Witt, R. G.

    1981-01-01

    The feasibility of mapping Level 2 forest cover types for a county-sized area on Maryland's Eastern Shore was demonstrated. A Level 1 land use/land cover classification was carried out for all of Worcester County as well. A June 1978 LANDSAT scene was utilized in a classification which employed two software packages on different computers (IDIMS on an HP 3000 and ASTEP-II on a Univac 1108). A twelve category classification scheme was devised for the study area. Resulting products include black and white line printer maps, final color coded classification maps, digitally enhanced color imagery and tabulated acreage statistics for all land use and land cover types.

  14. 7. VIEW OF PARKWAY WINDING THROUGH CHEVERLY, MARYLAND. MARYLAND HIGHWAY ...

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

    7. VIEW OF PARKWAY WINDING THROUGH CHEVERLY, MARYLAND. MARYLAND HIGHWAY 450 (ANNAPOLIS ROAD) UNDERPASS IN BACKGROUND. VIEW NW. (Lowe) - Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

  15. Community Involvement in Law Education: Human Resources in Carroll County, Maryland. Law-Related Education Program for the Schools of Maryland.

    ERIC Educational Resources Information Center

    Vetter, Donald P.; Vigliotti, Mark A.

    Community resources, learning activities, teaching tips, field trip suggestions, and other sources available in Carroll County, Maryland, for use by K-12 teachers in developing, planning, and implementing citizenship education programs in the social studies classroom are provided. The first chapter examines procedures to be followed by teachers…

  16. 2. Historic American Buildings Survey E.H. Pickering, Photographer December 1936 ...

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

    2. Historic American Buildings Survey E.H. Pickering, Photographer December 1936 OLDEST FRAME HOUSE OF WORSHIP IN MARYLAND. LORD AND LADY BALTIMORE ATTENDED SERVICE HERE IN 1700 WHEN WM. PENN PREACHED. - Quaker Meetinghouse, Washington Street, Easton, Talbot County, MD

  17. Two-dimensional linear and nonlinear Talbot effect from rogue waves.

    PubMed

    Zhang, Yiqi; Belić, Milivoj R; Petrović, Milan S; Zheng, Huaibin; Chen, Haixia; Li, Changbiao; Lu, Keqing; Zhang, Yanpeng

    2015-03-01

    We introduce two-dimensional (2D) linear and nonlinear Talbot effects. They are produced by propagating periodic 2D diffraction patterns and can be visualized as 3D stacks of Talbot carpets. The nonlinear Talbot effect originates from 2D rogue waves and forms in a bulk 3D nonlinear medium. The recurrences of an input rogue wave are observed at the Talbot length and at the half-Talbot length, with a π phase shift; no other recurrences are observed. Differing from the nonlinear Talbot effect, the linear effect displays the usual fractional Talbot images as well. We also find that the smaller the period of incident rogue waves, the shorter the Talbot length. Increasing the beam intensity increases the Talbot length, but above a threshold this leads to a catastrophic self-focusing phenomenon which destroys the effect. We also find that the Talbot recurrence can be viewed as a self-Fourier transform of the initial periodic beam that is automatically performed during propagation. In particular, linear Talbot effect can be viewed as a fractional self-Fourier transform, whereas the nonlinear Talbot effect can be viewed as the regular self-Fourier transform. Numerical simulations demonstrate that the rogue-wave initial condition is sufficient but not necessary for the observation of the effect. It may also be observed from other periodic inputs, provided they are set on a finite background. The 2D effect may find utility in the production of 3D photonic crystals.

  18. Successful practices in title III implementation. Chemical Emergency Preparedness and Prevention Technical Assistance Bulletin. Cameron County, Texas; Bucks County, Pennsylvania; Harford County, Maryland; Dallas County, Texas. Series 6, Number 7

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Not Available

    This is another in a series of bulletins EPA is issuing to provide examples of implementation programs and strategies of the Emergency Planning and Community Right-to-Know Act of 1986, known as Title III, that are innovative or have proven effective. The purpose of these bulletins is to share information on successful practices with Local Emergency Planning Committees (LEPCs), State Emergency Response Commissions (SERCs), fire departments, and other Title III implementing agencies throughout the country in the hope that such information will prove useful to other SERCs and LEPCs as their programs develop and evolve. The bulletin discusses Title III implementationmore » for Cameron County in Texas, Bucks County in Pennsylvania, Harford County in Maryland, and Dallas County in Texas.« less

  19. System alignment using the Talbot effect

    NASA Astrophysics Data System (ADS)

    Chevallier, Raymond; Le Falher, Eric; Heggarty, Kevin

    1990-08-01

    The Talbot effect is utilized to correct an alignment problem related to a neural network used for image recognition, which required the alignment of a spatial light modulator (SLM) with the input module. A mathematical model which employs the Fresnel diffraction theory is presented to describe the method. The calculation of the diffracted amplitude describes the wavefront sphericity and the original object transmittance function in order to qualify the lateral shift of the Talbot image. Another explanation is set forth in terms of plane-wave illumination in the neural network. Using a Fourier series and by describing planes where all the harmonics are in phase, the reconstruction of Talbot images is explained. The alignment is effective when the lenslet array is aligned on the even Talbot images of the SLM pixels and the incident wave is a plane wave. The alignment is evaluated in terms of source and periodicity errors, tilt of the incident plane waves, and finite object dimensions. The effects of the error sources are concluded to be negligible, the lenslet array is shown to be successfully aligned with the SLM, and other alignment applications are shown to be possible.

  20. Spherical grating based x-ray Talbot interferometry.

    PubMed

    Cong, Wenxiang; Xi, Yan; Wang, Ge

    2015-11-01

    Grating interferometry is a state-of-the-art x-ray imaging approach, which can acquire information on x-ray attenuation, phase shift, and small-angle scattering simultaneously. Phase-contrast imaging and dark-field imaging are very sensitive to microstructural variation and offers superior contrast resolution for biological soft tissues. However, a common x-ray tube is a point-like source. As a result, the popular planar grating imaging configuration seriously restricts the flux of photons and decreases the visibility of signals, yielding a limited field of view. The purpose of this study is to extend the planar x-ray grating imaging theory and methods to a spherical grating scheme for a wider range of preclinical and clinical applications. A spherical grating matches the wave front of a point x-ray source very well, allowing the perpendicular incidence of x-rays on the grating to achieve a higher visibility over a larger field of view than the planer grating counterpart. A theoretical analysis of the Talbot effect for spherical grating imaging is proposed to establish a basic foundation for x-ray spherical gratings interferometry. An efficient method of spherical grating imaging is also presented to extract attenuation, differential phase, and dark-field images in the x-ray spherical grating interferometer. Talbot self-imaging with spherical gratings is analyzed based on the Rayleigh-Sommerfeld diffraction formula, featuring a periodic angular distribution in a polar coordinate system. The Talbot distance is derived to reveal the Talbot self-imaging pattern. Numerical simulation results show the self-imaging phenomenon of a spherical grating interferometer, which is in agreement with the theoretical prediction. X-ray Talbot interferometry with spherical gratings has a significant practical promise. Relative to planar grating imaging, spherical grating based x-ray Talbot interferometry has a larger field of view and improves both signal visibility and dose

  1. NCI at Frederick's Wye Oak Moves Down the Street | Poster

    Cancer.gov

    One of NCI at Frederick’s two offspring of the Wye Oak tree that lived for nearly 500 years in Talbot County, Maryland, has found a new home on campus. The move was necessitated by upgrades to Chiller Plant #5 and the associated water piping routes on the west side of building 560.

  2. A Study of Special Education Referral and Placement Practices [in the] Montgomery County Public Schools (Maryland).

    ERIC Educational Resources Information Center

    Bowman, Jan E.

    A study was conducted of special education referral and placement practices within Montgomery County (Maryland) Public Schools. A group of 650 low-achieving elementary school students, identified to be "at risk" for failure, was monitored to examine special education referrals or placements. Three hundred of the students were studied to…

  3. Geology-based method of assessing sensitivity of streams to acidic deposition in Charles and Anne Arundel Counties, Maryland

    USGS Publications Warehouse

    Rice, Karen C.; Bricker, Owen P.

    1991-01-01

    The report describes the results of a study to assess the sensitivity of streams to acidic deposition in Charles and Anne Arundel Counties, Maryland using a geology-based method. Water samples were collected from streams in July and August 1988 when streams were at base-flow conditions. Eighteen water samples collected from streams in Charles County, and 17 water samples from streams in Anne Arundel County were analyzed in the field for pH, specific conductance, and acid-neutralizing capacity (ANC); 8 water samples from streams in Charles County were analyzed in the laboratory for chloride and sulfate concentrations. The assessment revealed that streams in these counties are sensitive to acidification by acidic deposition.

  4. Profiles in Excellence: Montgomery County, Maryland. A Districtwide Coalition to Improve Teaching through National Board Certification

    ERIC Educational Resources Information Center

    National Board for Professional Teaching Standards, 2010

    2010-01-01

    Over the past decade, Montgomery County Public Schools (MCPS) in Maryland has focused on improving teacher capacity as a strategy to address achievement gaps and promote "college-ready" standards in what has become an "urban suburb" with significant pockets of high-need students. As part of this focus on quality teaching, the…

  5. Spherical grating based x-ray Talbot interferometry

    PubMed Central

    Cong, Wenxiang; Xi, Yan; Wang, Ge

    2015-01-01

    Purpose: Grating interferometry is a state-of-the-art x-ray imaging approach, which can acquire information on x-ray attenuation, phase shift, and small-angle scattering simultaneously. Phase-contrast imaging and dark-field imaging are very sensitive to microstructural variation and offers superior contrast resolution for biological soft tissues. However, a common x-ray tube is a point-like source. As a result, the popular planar grating imaging configuration seriously restricts the flux of photons and decreases the visibility of signals, yielding a limited field of view. The purpose of this study is to extend the planar x-ray grating imaging theory and methods to a spherical grating scheme for a wider range of preclinical and clinical applications. Methods: A spherical grating matches the wave front of a point x-ray source very well, allowing the perpendicular incidence of x-rays on the grating to achieve a higher visibility over a larger field of view than the planer grating counterpart. A theoretical analysis of the Talbot effect for spherical grating imaging is proposed to establish a basic foundation for x-ray spherical gratings interferometry. An efficient method of spherical grating imaging is also presented to extract attenuation, differential phase, and dark-field images in the x-ray spherical grating interferometer. Results: Talbot self-imaging with spherical gratings is analyzed based on the Rayleigh–Sommerfeld diffraction formula, featuring a periodic angular distribution in a polar coordinate system. The Talbot distance is derived to reveal the Talbot self-imaging pattern. Numerical simulation results show the self-imaging phenomenon of a spherical grating interferometer, which is in agreement with the theoretical prediction. Conclusions: X-ray Talbot interferometry with spherical gratings has a significant practical promise. Relative to planar grating imaging, spherical grating based x-ray Talbot interferometry has a larger field of view and

  6. Spherical grating based x-ray Talbot interferometry

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Cong, Wenxiang, E-mail: congw@rpi.edu, E-mail: xiy2@rpi.edu, E-mail: wangg6@rpi.edu; Xi, Yan, E-mail: congw@rpi.edu, E-mail: xiy2@rpi.edu, E-mail: wangg6@rpi.edu; Wang, Ge, E-mail: congw@rpi.edu, E-mail: xiy2@rpi.edu, E-mail: wangg6@rpi.edu

    2015-11-15

    Purpose: Grating interferometry is a state-of-the-art x-ray imaging approach, which can acquire information on x-ray attenuation, phase shift, and small-angle scattering simultaneously. Phase-contrast imaging and dark-field imaging are very sensitive to microstructural variation and offers superior contrast resolution for biological soft tissues. However, a common x-ray tube is a point-like source. As a result, the popular planar grating imaging configuration seriously restricts the flux of photons and decreases the visibility of signals, yielding a limited field of view. The purpose of this study is to extend the planar x-ray grating imaging theory and methods to a spherical grating scheme formore » a wider range of preclinical and clinical applications. Methods: A spherical grating matches the wave front of a point x-ray source very well, allowing the perpendicular incidence of x-rays on the grating to achieve a higher visibility over a larger field of view than the planer grating counterpart. A theoretical analysis of the Talbot effect for spherical grating imaging is proposed to establish a basic foundation for x-ray spherical gratings interferometry. An efficient method of spherical grating imaging is also presented to extract attenuation, differential phase, and dark-field images in the x-ray spherical grating interferometer. Results: Talbot self-imaging with spherical gratings is analyzed based on the Rayleigh–Sommerfeld diffraction formula, featuring a periodic angular distribution in a polar coordinate system. The Talbot distance is derived to reveal the Talbot self-imaging pattern. Numerical simulation results show the self-imaging phenomenon of a spherical grating interferometer, which is in agreement with the theoretical prediction. Conclusions: X-ray Talbot interferometry with spherical gratings has a significant practical promise. Relative to planar grating imaging, spherical grating based x-ray Talbot interferometry has a larger field of view and

  7. Super Talbot effect in indefinite metamaterial.

    PubMed

    Zhao, Wangshi; Huang, Xiaoyue; Lu, Zhaolin

    2011-08-01

    The Talbot effect (or the self-imaging effect) can be observed for a periodic object with a pitch larger than the diffraction limit of an imaging system, where the paraxial approximation is applied. In this paper, we show that the super Talbot effect can be achieved in an indefinite metamaterial even when the period is much smaller than the diffraction limit in both two-dimensional and three-dimensional numerical simulations, where the paraxial approximation is not applied. This is attributed to the evanescent waves, which carry the information about subwavelength features of the object, can be converted into propagating waves and then conveyed to far field by the metamaterial, where the permittivity in the propagation direction is negative while the transverse ones are positive. The indefinite metamaterial can be approximated by a system of thin, alternating multilayer metal and insulator (MMI) stack. As long as the loss of the metamaterial is small enough, deep subwavelength image size can be obtained in the super Talbot effect.

  8. Water volume and sediment accumulation in Lake Linganore, Frederick County, Maryland, 2009

    USGS Publications Warehouse

    Sekellick, Andrew J.; Banks, S.L.

    2010-01-01

    To assist in understanding sediment and phosphorus loadings and the management of water resources, a bathymetric survey was conducted at Lake Linganore in Frederick County, Maryland in June 2009 by the U.S. Geological Survey, in cooperation with the City of Frederick and Frederick County, Maryland. Position data and water-depth data were collected using a survey grade echo sounder and a differentially corrected global positioning system. Data were compiled and edited using geographic information system software. A three-dimensional triangulated irregular network model of the lake bottom was created to calculate the volume of stored water in the reservoir. Large-scale topographic maps of the valley prior to inundation in 1972 were provided by the City of Frederick and digitized. The two surfaces were compared and a sediment volume was calculated. Cartographic representations of both water depth and sediment accumulation were produced along with an area/capacity table. An accuracy assessment was completed on the resulting bathymetric model. Vertical accuracy at the 95-percent confidence level for the collected data, the bathymetric surface model, and the bathymetric contour map was calculated to be 0.95 feet, 1.53 feet, and 3.63 feet, respectively. The water storage volume of Lake Linganore was calculated to be 1,860 acre-feet at full pool elevation. Water volume in the reservoir has decreased by 350 acre-feet (about 16 percent) in the 37 years since the dam was constructed. The total calculated volume of sediment deposited in the lake since 1972 is 313 acre-feet. This represents an average rate of sediment accumulation of 8.5 acre-feet per year since Linganore Creek was impounded. A sectional analysis of sediment distribution indicates that the most upstream third of Lake Linganore contains the largest volume of sediment whereas the section closest to the dam contains the largest amount of water. In comparison to other Maryland Piedmont reservoirs, Lake Linganore

  9. HYDROGIOLOGIC FRAMEWORK, GROUND-WATER GEOCHEMISTRY, AND ASSESSMENT OF NITROGEN YIELD FROM BASE FLOW IN TWO AGRICULTURAL WATERSHEDS, KENT COUNTY, MARYLAND

    EPA Science Inventory

    Hydrostratigraphic and geochemical data collected in two adjacent watersheds on the Delmarva Peninsula, in Kent County, Maryland, indicate that shallow subsurface stratigraphy is an important factor that affects the concentrations of nitrogen in ground water discharging as stream...

  10. In-phased second harmonic wave array generation with intra-Talbot-cavity frequency-doubling.

    PubMed

    Hirosawa, Kenichi; Shohda, Fumio; Yanagisawa, Takayuki; Kannari, Fumihiko

    2015-03-23

    The Talbot cavity is one promising method to synchronize the phase of a laser array. However, it does not achieve the lowest array mode with the same phase but the highest array mode with the anti-phase between every two adjacent lasers, which is called out-phase locking. Consequently, their far-field images exhibit 2-peak profiles. We propose intra-Talbot-cavity frequency-doubling. By placing a nonlinear crystal in a Talbot cavity, the Talbot cavity generates an out-phased fundamental wave array, which is converted into an in-phase-locked second harmonic wave array at the nonlinear crystal. We demonstrate numerical calculations and experiments on intra-Talbot-cavity frequency-doubling and obtain an in-phase-locked second harmonic wave array for a Nd:YVO₄ array laser.

  11. The Talbot effect in a metamaterial

    NASA Astrophysics Data System (ADS)

    Nikkhah, H.; Hasan, M.; Hall, T. J.

    2018-02-01

    The effect of anisotropy and spatial dispersion of a metamaterial on the Talbot effect may be engineered in principle. This has profound implications for applications of the Talbot effect such as the design of a multimode interference coupler (MMI). The paper describes how a metamaterial can suppress the modal phase error which otherwise limits the scaling of MMI port dimension. A binary multilayer dielectric material described by the Kronig-Penney model is shown to provide a close approximation to the required dispersion relation. Results of simulations of a multi-slotted waveguide MMI engineered to provide a polarising beam splitter function are given as an example of the method.

  12. Features of Talbot effect on phase diffraction grating

    NASA Astrophysics Data System (ADS)

    Brazhnikov, Denis G.; Danko, Volodymyr P.; Kotov, Myhaylo M.; Kovalenko, Andriy V.

    2018-01-01

    The features of the Talbot effect using the phase diffraction gratings have been considered. A phase grating, unlike an amplitude grating, gives a constant light intensity in the observation plane at a distance multiple to half of the Talbot length ZT. In this case, the subject of interest consists in so-called fractional Talbot effect with the periodic intensity distribution observed in planes shifted from the position nZT/2 (the so-called Fresnel images). Binary phase diffraction gratings with varying phase steps have been investigated. Gratings were made photographically on holographic plates PFG-01. The phase shift was obtained by modulating the emulsion refraction index of the plates. Two types of gratings were used: a square grating with a fill factor of 0.5 and a checkerwise grating (square areas with a bigger and lower refractive index alternate in a checkerboard pattern). By the example of these gratings, the possibility of obtaining in the observation plane an image of a set of equidistant spots with a size smaller than the size of the phase-shifting elements of the grating (the so-called Talbot focusing) has been shown. Clear images of spots with a sufficient signal-to-noise ratio have been obtained for a square grating. Their period was equal to the period of the grating. For a grating with a checkerwise distribution of the refractive index, the spots have been located in positions corresponding to the centres of cells. In addition, the quality of the resulting pattern strongly depended on the magnitude of a grating phase step. As a result of the work, the possibility to obtain Talbot focusing has been shown and the use of this effect to wavefront investigation with a gradient sensor has been demonstrated.

  13. Development of a Land Use Database for the Little Blackwater Watershed, Dorchester County, Maryland

    USGS Publications Warehouse

    Milheim, Lesley E.; Jones, John W.; Barlow, Roger A.

    2007-01-01

    Many agricultural and forested areas in proximity to National Wildlife Refuges (NWR) are under increasing economic pressure to develop lands for commercial or residential development. The upper portion of the Little Blackwater River watershed - a 27 square mile area within largely low-lying Dorchester County, Maryland, on the eastern shore of the Chesapeake Bay - is important to the U.S. Fish and Wildlife Service (USFWS) because it flows toward the Blackwater National Wildlife Refuge (BNWR), and developmental impacts of areas upstream from the BNWR are unknown. One of the primary concerns for the refuge is how storm-water runoff may affect living resources downstream. The Egypt Road project (fig. 1), for which approximately 600 residential units have been approved, has the potential to markedly change the land use and land cover on the west bank of the Little Blackwater River. In an effort to limit anticipated impacts, the Maryland Department of Natural Resources (Maryland DNR) recently decided to purchase some of the lands previously slated for development. Local topography, a high water table (typically 1 foot or less below the land surface), and hydric soils present a challenge for the best management of storm-water flow from developed surfaces. A spatial data coordination group was formed by the Dorchester County Soil and Conservation District to collect data to aid decisionmakers in watershed management and on the possible impacts of development on this watershed. Determination of streamflow combined with land cover and impervious-surface baselines will allow linking of hydrologic and geologic factors that influence the land surface. This baseline information will help planners, refuge managers, and developers discuss issues and formulate best management practices to mitigate development impacts on the refuge. In consultation with the Eastern Region Geospatial Information Office, the dataset selected to be that baseline land cover source was the June-July 2005

  14. Theory of Talbot lasers

    NASA Astrophysics Data System (ADS)

    Guillet de Chatellus, H.; Lacot, E.; Glastre, W.; Jacquin, O.; Hugon, O.

    2013-09-01

    We provide a theoretical study of frequency-shifted feedback (FSF) lasers, i.e., lasers with an internal frequency shifter, seeded with a monochromatic wave. The resulting spectrum consists in a set of equidistant modes, labeled by n, whose phases vary quadratically with n. We prove the emergence of a temporal fractional Talbot effect, leading to generation of Fourier-transform-limited pulses at a repetition rate tunable by the parameters of the FSF cavity (cavity length and frequency shift per round trip), and limited by the spectral bandwidth of the laser. We characterize in detail the output field of this so-called “Talbot laser” and emphasize its specific intensity fluctuations. We evidence connections with some aspects of number theory by the appearance of Gauss sums and theta series in the expression of the laser field. Our predictions are in full agreement with the experimental results published in Guillet de Chatellus [Opt. ExpressOPEXFF1094-408710.1364/OE.21.015065 21, 15065 (2013)]. Practical applications and limitations are discussed.

  15. Talbot effect of quasi-periodic grating.

    PubMed

    Zhang, Chong; Zhang, Wei; Li, Furui; Wang, Junhong; Teng, Shuyun

    2013-07-20

    Theoretic and experimental studies of the Talbot effect of quasi-periodic gratings are performed in this paper. The diffractions of periodic and quasi-periodic square aperture arrays in Fresnel fields are analyzed according to the scalar diffraction theory. The expressions of the diffraction intensities of two types of quasi-periodic gratings are deduced. Talbot images of the quasi-periodic gratings are predicted to appear at multiple certain distances. The quasi-periodic square aperture arrays are produced with the aid of a liquid crystal light modulator, and the self-images of the quasi-periodic gratings are measured successfully in the experiment. This study indicates that even a structure in short-range disorder may take on the self-imaging effect in a Fresnel field.

  16. Maryland Community Colleges: Databook and Annual Report.

    ERIC Educational Resources Information Center

    Maryland State Board for Community Colleges, Annapolis.

    This databook, which is used for strategic planning, provides an overview of all aspects of community college functions in Maryland and is an annual report to the state legislature. Section I provides information on the Maryland higher education structure and undergraduate enrollment by county and type of institution. Section II presents…

  17. 35. NORTH END OF BALTIMOREWASHINGTON PARKWAY, WHERE MARYLAND HIGHWAY 295, ...

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

    35. NORTH END OF BALTIMORE-WASHINGTON PARKWAY, WHERE MARYLAND HIGHWAY 295, "THE BALTIMORE-WASHINGTON EXPRESSWAY," BEGINS, MARYLAND HIGHWAY 175 IN BACKGROUND. VIEWN. - Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD

  18. Phase-locked array of quantum cascade lasers with an integrated Talbot cavity.

    PubMed

    Wang, Lei; Zhang, Jinchuan; Jia, Zhiwei; Zhao, Yue; Liu, Chuanwei; Liu, Yinghui; Zhai, Shenqiang; Ning, Zhuo; Xu, Xiangang; Liu, Fengqi

    2016-12-26

    We show a phase-locked array of three quantum cascade lasers with an integrated Talbot cavity at one side of the laser array. The coupling scheme is called diffraction coupling. By controlling the length of Talbot to be a quarter of Talbot distance (Zt/4), in-phase mode operation can be selected. The in-phase operation shows great modal stability under different injection currents, from the threshold current to the full power current. The far-field radiation pattern of the in-phase operation contains three lobes, one central maximum lobe and two side lobes. The interval between adjacent lobes is about 10.5°. The output power is about 1.5 times that of a single-ridge laser. Further studies should be taken to achieve better beam performance and reduce optical losses brought by the integrated Talbot cavity.

  19. Development of an Impervious-Surface Database for the Little Blackwater River Watershed, Dorchester County, Maryland

    USGS Publications Warehouse

    Milheim, Lesley E.; Jones, John W.; Barlow, Roger A.

    2007-01-01

    Many agricultural and forested areas in proximity to National Wildlife Refuges (NWR) are under increasing economic pressure for commercial or residential development. The upper portion of the Little Blackwater River watershed - a 27 square mile area within largely low-lying Dorchester County, Maryland, on the eastern shore of the Chesapeake Bay - is important to the U.S. Fish and Wildlife Service (USFWS) because it flows toward the Blackwater National Wildlife Refuge (BNWR), and developmental impacts of areas upstream from the BNWR are unknown. One of the primary concerns for the Refuge is how storm-water runoff may affect living resources downstream. The Egypt Road project (fig. 1), for which approximately 600 residential units have been approved, has the potential to markedly change the land use and land cover on the west bank of the Little Blackwater River. In an effort to limit anticipated impacts, the Maryland Department of Natural Resources (Maryland DNR) recently decided to purchase some of the lands previously slated for development. Local topography, a high water table (typically 1 foot or less below the land surface), and hydric soils present a challenge for the best management of storm-water flow from developed surfaces. A spatial data coordination group was formed by the Dorchester County Soil and Conservation District to collect data to aid decisionmakers in watershed management and on the possible impacts of development on this watershed. Determination of streamflow combined with land cover and impervious-surface baselines will allow linking of hydrologic and geologic factors that influence the land surface. This baseline information will help planners, refuge managers, and developers discuss issues and formulate best management practices to mitigate development impacts on the refuge. In consultation with the Eastern Region Geospatial Information Office, the dataset selected to be that baseline land cover source was the June-July 2005 National

  20. Talbot-Lau x-ray interferometry for high energy density plasma diagnostic.

    PubMed

    Stutman, D; Finkenthal, M

    2011-11-01

    High resolution density diagnostics are difficult in high energy density laboratory plasmas (HEDLP) experiments due to the scarcity of probes that can penetrate above solid density plasmas. Hard x-rays are one possible probe for such dense plasmas. We study the possibility of applying an x-ray method recently developed for medical imaging, differential phase-contrast with Talbot-Lau interferometers, for the diagnostic of electron density and small-scale hydrodynamic instabilities in HEDLP experiments. The Talbot method uses micro-periodic gratings to measure the refraction and ultra-small angle scatter of x-rays through an object and is attractive for HEDLP diagnostic due to its capability to work with incoherent and polychromatic x-ray sources such as the laser driven backlighters used for HEDLP radiography. Our paper studies the potential of the Talbot method for HEDLP diagnostic, its adaptation to the HEDLP environment, and its extension of high x-ray energy using micro-periodic mirrors. The analysis is illustrated with experimental results obtained using a laboratory Talbot interferometer. © 2011 American Institute of Physics

  1. Grade 4: Maryland--Geography. Maryland--History of the Colonial Period.

    ERIC Educational Resources Information Center

    Allegany County Board of Education, Cumberland, MD.

    The curriculum guide presents a working draft of the fourth grade component of a K-6 social studies program using the expanding environments approach which was developed by the Allegany County Board of Education in Maryland. The overall objective is to help teachers assist their students in gaining the understanding needed to deal with the…

  2. Biomass statistics for Maryland--1986

    Treesearch

    Thomas S. Frieswyk; Dawn M. DiGiovanni; Dawn M. DiGiovanni

    1990-01-01

    A statistical report on the fourth forest survey of Maryland (1986). Findings are displayed in 97 tables containing estimates of forest area, tree biomass, and timber volume. Data are presented by state and county level.

  3. The Wye Oaks on Campus | Poster

    Cancer.gov

    The Wye Oak tree—a towering white oak that lived for nearly 500 years in Talbot County, Maryland—was the nation’s largest white oak tree as well as the State Tree of Maryland until it was destroyed in a severe thunderstorm in 2002. Today, several clones of the Wye Oak, as well as a few of the Wye Oak’s progeny, still exist—including two on the NCI at Frederick campus.

  4. Tree planting - strip-mined area in Maryland

    Treesearch

    Fred L. Bagley

    1980-01-01

    Maryland is relatively small in relation with other coal-producing states. Only one and one-third Counties in extreme Western Maryland is involved in mining. Elevation for the mining region is from a low of 1200 feet to a high of 3800 feet. Rainfall is well distributed ranging from 40 to 48 inches per year. Until 1975, the revegetation of strip mined areas was the...

  5. Social Movements Against Racist Police Brutality and Department of Justice Intervention in Prince George's County, Maryland.

    PubMed

    Hutto, Jonathan W; Green, Rodney D

    2016-04-01

    Racist police brutality has been systemic in Prince George's County, Maryland. The victims include African Americans, the mentally challenged, and immigrant populations, creating a complex and uneven public health impact. Three threads characterize the social movements and intervention since 1970. First, a significant demographic shift occurred as African Americans became the majority population in the late 1980s when the first Black county executive was elected in 1994. Despite the change in political leadership, police brutality remained rampant. Lower-income households located close to the District of Columbia and "inside the beltway" experienced the most police brutality. In 2001, The Washington Post revealed that between 1990 and 2000, Prince George's police shot and killed more citizens per officer than any of the 50 largest city and county law enforcement agencies in the country, 84 % of whom were black. Of the 147 persons shot during the 1990s, 12 were mentally and/or emotionally disturbed; 6 of these shootings were fatal. Second, resistance to police brutality emerged in a variety of political formations throughout the period, especially in the late 1990s. Sustained community pressure prompted the Department of Justice (DOJ) to open a civil rights investigation of the police department in November 2000. To avoid a potential federal lawsuit, the county leadership negotiated a memorandum of agreement (MOA) with the DOJ to enact policy reforms, part of which called for supplementing the departmental mobile crisis team, comprised of mental health care professionals, to respond to all cases involving mentally challenged citizens. Third, the incomplete process of change subsequent to the ending of DOJ oversight suggests a continued challenge to social movements opposing police brutality. This study focuses on the effectiveness of the MOA along with the activism of the People's Coalition for Police Accountability (PCPA) in reforming a culture of police brutality

  6. Fractional Talbot field and of finite gratings: compact analytical formulation.

    PubMed

    Arrizón, V; Rojo-Velázquez, G

    2001-06-01

    We present a compact analytical formulation for the fractional Talbot effect at the paraxial domain of a finite grating. Our results show that laterally shifted distorted images of the grating basic cell form the Fresnel field at a fractional Talbot plane of the grating. Our formulas give the positions of those images and show that they are given by the convolution of the nondistorted cells (modulated by a quadratic phase factor) with the Fourier transform of the finite-grating pupil.

  7. White-crowned sparrows wintering in Maryland and West Virginia

    USGS Publications Warehouse

    Llewellyn, L.M.

    1949-01-01

    During the Christmas holidays (1947) five white-crowned sparrows (Zonotrichia l. leucophrys) were trapped and banded at McCoole, Allegany County, Maryland. On January 31 and February 1, 1948, 11 more were banded and a flock of at least 21 white-crowns was counted feeding in the snow under pigweed (Amaranthus hybridus). On the latter date five others were observed feeding under the same type of vegetation near the Potomac River in Keyser, Mineral County, West Virginia. All birds ob- served were immatures. So far as is known this is the first published record for this species wintering in Maryland. It has been previously reported in winter from West Virginia in Hampshire, Kanawha, and Cabell Counties (Maurice G. Brooks, 'A Check List of West Virginia Birds,' 1944).

  8. Experimental quantum information processing with the Talbot effect

    NASA Astrophysics Data System (ADS)

    Sawada, K.; Walborn, S. P.

    2018-07-01

    We report a proof of concept experiment illustrating the implementation of several simple quantum logic gates on D-level quantum systems (quDits) using the Talbot effect. A number of QuDit states are encoded into the transverse profile of a paraxial laser beam using a spatial light modulator. These states are transformed through a diagonal phase element and then free-propagation via the fractional Talbot effect, demonstrating the realization of some well-known single quDit gates in quantum computation. Our classical optics experiment allows us to identify several important technical details, and serves as a first experimental step in performing D-dimensional quantum operations with single photons or other quantum systems using this scheme.

  9. Alternative Fuels Data Center: Maryland Transportation Data for Alternative

    Science.gov Websites

    : BioFuels Atlas from the National Renewable Energy Laboratory Case Studies Video thumbnail for Baltimore on YouTube Video thumbnail for Maryland County Fleet Uses Wide Variety of Alternative Fuels Maryland /Jt3ftCMissc Video thumbnail for Veolia Transportation Converts Taxi Fleet to Propane Veolia Transportation

  10. 40 CFR 81.12 - National Capital Interstate Air Quality Control Region (District of Columbia, Maryland, and...

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... State of Maryland: Montgomery County; Prince Georges County. In the State of Virginia: Arlington County; Fairfax County; Loudoun County; Prince William County. (As so delimited, the Virginia portion of the...

  11. Ground-water use in the coastal plain of Maryland, 1900-1980

    USGS Publications Warehouse

    Wheeler, J.C.; Wilde, F.D.

    1989-01-01

    This report presents groundwater withdrawal data from 1900 through 1980 for Maryland counties lying with the Coastal Plain physiographic province, as well as a summary section for the total Maryland Coastal Plain. The types of water use included are domestic, military, water supplier, industrial/commercial, and irrigation. The data were obtained from state and county reports, biannual pumpage reports submitted to the Maryland Water Resources Administration, communication with individual owners, and estimates based on existing published data. The amount of groundwater withdrawn from aquifers in the Maryland Coastal Plain in 1900 was approximately 26 million gallons per day (Mgal/d) compared to nearly 134 Mgal/d in 1980. Jurisdictions withdrawing more than 10 Mgal/d for most of the 80-year period were Anne Arundel and Baltimore Counties and Baltimore City. The greatest withdrawals for most of the early part of the period were for domestic and industrial/commercial uses; however, water-supplier use dominated after 1965. Groundwater use for irrigation became important in the Coastal Plain around 1960 and increased steadily from approximately 2 Mgal/d in 1960 to nearly 12 Mgal/d in 1980. (USGS)

  12. The Impact of Local Environmental Health Capacity on Foodborne Illness Morbidity in Maryland

    PubMed Central

    Resnick, Beth A.; Fox, Mary A.; McGready, John; Yager, James P.; Burke, Thomas A.

    2011-01-01

    Objectives. We evaluated the relationship between local food protection capacity and service provision in Maryland's 24 local food protection programs (FPPs) and incidence of foodborne illness at the county level. Methods. We conducted regression analyses to determine the relationship between foodborne illness and local FPP characteristics. We used the Centers for Disease Control and Prevention's FoodNet and Maryland Department of Health and Mental Hygiene outbreak data set, along with data on Maryland's local FPP capacity (workforce size and experience levels, budget) and service provision (food service facility inspections, public notification programs). Results. Counties with higher capacity, such as larger workforce, higher budget, and greater employee experience, had fewer foodborne illnesses. Counties with better performance and county-level regulations, such as high food service facility inspection rates and requiring certified food manager programs, respectively, had lower rates of illness. Conclusions. Counties with strong local food protection capacity and services can protect the public from foodborne illness. Research on public health services can enhance our understanding of the food protection infrastructure, and the effectiveness of food protection programs in preventing foodborne illness. PMID:21750282

  13. The Employment Situation in Selected Communities on the Lower Eastern Shore of Maryland.

    ERIC Educational Resources Information Center

    Thaxton, Louis C.; Tuthill, Dean F.

    This is an illustrated report on some findings of the Citizens Education Project (CEP), a 1979 survey of the employment situation of communities in five Maryland counties. The study was conducted by the Maryland Cooperative Extension Service, University of Maryland, College Park and Eastern Shore, with funding from Extension Program 1890. The…

  14. Reconnaissance techniques for determining soil-gas radon concentrations: an example from Prince Georges County, Maryland

    USGS Publications Warehouse

    Reimer, G.M.

    1990-01-01

    Radon reconnaissance requires some special considerations because a large area must be covered in a short period of time and analyses must be made soon after collection because of Rn decay. A simple approach to collection and field analysis consists of a small-diameter probe pounded into the ground to a depth of at least 0.75 m. Analysis is by an alpha-scintillometer. Soil-gas samples collected along a traverse in Prince Georges County, Maryland, demonstrates the utility of the technique. The reconnaissance sampling revealed Rn soil-gas concentrations of up to 2500 pCi/L (picocuries per liter) indicating that the potential exists for indoor accumulations in excess of 4 pCi/L. -from Author

  15. Bottlenecks of the wavefront sensor based on the Talbot effect.

    PubMed

    Podanchuk, Dmytro; Kovalenko, Andrey; Kurashov, Vitalij; Kotov, Myhaylo; Goloborodko, Andrey; Danko, Volodymyr

    2014-04-01

    Physical constraints and peculiarities of the wavefront sensing technique, based on the Talbot effect, are discussed. The limitation on the curvature of the measurable wavefront is derived. The requirements to the Fourier spectrum of the periodic mask are formulated. Two kinds of masks are studied for their performance in the wavefront sensor. It is shown that the boundary part of the mask aperture does not contribute to the initial data for wavefront restoration. It is verified by experiment and computer simulation that the performance of the Talbot sensor, which meets established conditions, is similar to that of the Shack-Hartmann sensor.

  16. 46 CFR 7.85 - St. Simons Island, GA to Little Talbot Island, FL.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 1 2010-10-01 2010-10-01 false St. Simons Island, GA to Little Talbot Island, FL. 7.85... BOUNDARY LINES Atlantic Coast § 7.85 St. Simons Island, GA to Little Talbot Island, FL. (a) A line drawn from latitude 31°04.1′ N. longitude 81°16.7′ W. (St. Simons Lighted Whistle Buoy “ST S”) to latitude 30...

  17. Coherent emission from integrated Talbot-cavity quantum cascade lasers.

    PubMed

    Meng, Bo; Qiang, Bo; Rodriguez, Etienne; Hu, Xiao Nan; Liang, Guozhen; Wang, Qi Jie

    2017-02-20

    We report experimental realization of phase-locked quantum cascade laser (QCL) array using a monolithically integrated Talbot cavity. An array with six laser elements at a wavelength of ~4.8 μm shows a maximum peak power of ~4 W which is more than 5 times higher than that of a single ridge laser element and a slope efficiency of 1 W/A at room temperature. Operation of in-phase coherent supermode has been achieved over the whole dynamic range of the Talbot-cavity QCL. The structure was analysed using a straightforward theoretical model, showing quantitatively good agreement with the experimental results. The reduced thermal resistance makes the structure an attractive approach to achieve high beam quality continuous wave QCLs.

  18. Understanding Photography as Applied Chemistry: Using Talbot's Calotype Process to Introduce Chemistry to Design Students

    ERIC Educational Resources Information Center

    Ro¨sch, Esther S.; Helmerdig, Silke

    2017-01-01

    Early photography processes were predestined to combine chemistry and art. William Henry Fox Talbot is one of the early photography pioneers. In 2-3 day workshops, design students without a major background in chemistry are able to define a reproducible protocol for Talbot's gallic acid containing calotype process. With the experimental concept…

  19. Maryland KIDS COUNT Factbook, 1999.

    ERIC Educational Resources Information Center

    Advocates for Children and Youth, Baltimore, MD.

    This Kids Count factbook is the fifth to examine statewide and county trends in the well-being of Maryland's children. The statistical portrait is based on indicators in the domains of economic well-being, good health, safety, and preparing for adulthood. The 16 indicators are: (1) child poverty; (2) child support; (3) births to teens; (4) low…

  20. Observation of electromagnetically induced Talbot effect in an atomic system

    NASA Astrophysics Data System (ADS)

    Zhang, Zhaoyang; Liu, Xing; Zhang, Dan; Sheng, Jiteng; Zhang, Yiqi; Zhang, Yanpeng; Xiao, Min

    2018-01-01

    The electromagnetically induced Talbot effect (EITE) resulting from the repeated self-reconstruction of a spatially intensity-modulated probe field is experimentally demonstrated in a three-level atomic configuration. The probe beam is launched into an optically induced lattice (established by the interference of two coupling fields) inside a rubidium vapor cell and is diffracted by the electromagnetically induced grating that was formed. The diffraction pattern repeats itself at the planes of integer multiple Talbot lengths. In addition, a fractional EITE is also investigated. The experimental observations agree well with the theoretical predictions. This investigation may potentially pave the way for studying the nonlinear and quantum dynamical features that have been predicted for established periodic optical systems.

  1. Local food protection and safety infrastructure and capacity: a Maryland case study.

    PubMed

    Kufel, Joanna Zablotsky; Resnick, Beth A; Fox, Mary; Frattaroli, Shannon; Gielen, Andrea; Burke, Thomas A

    2011-01-01

    In Maryland, county Food Protection Programs (FPP), housed within Environmental Public Health (EPH) Divisions, maintain responsibility for regular inspection of all food service facilities (FSF). With growing concerns about how our food supply is protected, it is important to determine the state and effectiveness of our food safety systems. This research elucidates the roles, responsibilities, strengths, and weaknesses of Food Safety and Protection Programs in Maryland. A 16-question survey tool, which addressed facets of the local food protection infrastructure, including FSF inspections, staffing, budget, and foodborne illness surveillance, was distributed to all 24 county FPP. The number of FSF in Maryland increased 97% from 2001 to 2006 and counties had an average inspection completion rate of 73%, with a 4% increase over the time period. Statewide, there were 4.1 EPH full-time employees (FTE) per 10 000 population and 1.6 FPP FTE per 10 000 population. EPH Division budgets increased 63% statewide, from $19.5 million in 2000 to $31.9 million in 2007. FPP budgets also increased 59% over the period, from $6.2 million in 2000 to $9.8 million in 2007. This study offers new quantitative measures of the demands, capacities, and performance of Food Protection and Safety Programs in Maryland. This assessment of local EPH and FPP capacity also offers insight into the strengths and weaknesses of the local food protection and safety infrastructure. Importantly, it reveals an infrastructure and dedicated food protection workforce that inspects the food supply and responds to foodborne illness outbreaks. Yet, resources vary substantially from county to county, impacting which services can be provided and how well they can be performed. This can, in turn, impact the potential risk of foodborne illness and the public's overall health.

  2. Forest statistics for Maryland: 1986 and 1999

    Treesearch

    Thomas S. Frieswyk

    2001-01-01

    A statistical report on the fifth forest inventory of Maryland (1998-1999). Findings are displayed in 109 tables containing estimates of forest area, numbers of trees, wildlife habitat, timber volume, growth, change, and biomass. Data are presented at three levels: state, geographic unit and county.

  3. Forest statistics for Maryland--1976 and 1986

    Treesearch

    Thomas S. Frieswyk; Dawn M. DiGiovanni; Dawn M. DiGiovanni

    1988-01-01

    A statistical report on the fourth forest survey of Maryland (1986). Findings are displayed in 115 tables containing estimates of forest area, numbers of trees, timber volume, tree biomass, and timber products output. Data are presented at three levels: state, geographic unit, and county.

  4. A preclinical Talbot-Lau prototype for x-ray dark-field imaging of human-sized objects.

    PubMed

    Hauke, C; Bartl, P; Leghissa, M; Ritschl, L; Sutter, S M; Weber, T; Zeidler, J; Freudenberger, J; Mertelmeier, T; Radicke, M; Michel, T; Anton, G; Meinel, F G; Baehr, A; Auweter, S; Bondesson, D; Gaass, T; Dinkel, J; Reiser, M; Hellbach, K

    2018-06-01

    Talbot-Lau x-ray interferometry provides information about the scattering and refractive properties of an object - in addition to the object's attenuation features. Until recently, this method was ineligible for imaging human-sized objects as it is challenging to adapt Talbot-Lau interferometers (TLIs) to the relevant x-ray energy ranges. In this work, we present a preclinical Talbot-Lau prototype capable of imaging human-sized objects with proper image quality at clinically acceptable dose levels. The TLI is designed to match a setup of clinical relevance as closely as possible. The system provides a scan range of 120 × 30 cm 2 by using a scanning beam geometry. Its ultimate load is 100 kg. High aspect ratios and fine grid periods of the gratings ensure a reasonable setup length and clinically relevant image quality. The system is installed in a university hospital and is, therefore, exposed to the external influences of a clinical environment. To demonstrate the system's capabilities, a full-body scan of a euthanized pig was performed. In addition, freshly excised porcine lungs with an extrinsically provoked pneumothorax were mounted into a human thorax phantom and examined with the prototype. Both examination sequences resulted in clinically relevant image quality - even in the case of a skin entrance air kerma of only 0.3 mGy which is in the range of human thoracic imaging. The presented case of a pneumothorax and a reader study showed that the prototype's dark-field images provide added value for pulmonary diagnosis. We demonstrated that a dedicated design of a Talbot-Lau interferometer can be applied to medical imaging by constructing a preclinical Talbot-Lau prototype. We experienced that the system is feasible for imaging human-sized objects and the phase-stepping approach is suitable for clinical practice. Hence, we conclude that Talbot-Lau x-ray imaging has potential for clinical use and enhances the diagnostic power of medical x-ray imaging.

  5. Low-flow statistics of selected streams in Chester County, Pennsylvania

    USGS Publications Warehouse

    Schreffler, Curtis L.

    1998-01-01

    Low-flow statistics for many streams in Chester County, Pa., were determined on the basis of data from 14 continuous-record streamflow stations in Chester County and data from 1 station in Maryland and 1 station in Delaware. The stations in Maryland and Delaware are on streams that drain large areas within Chester County. Streamflow data through the 1994 water year were used in the analyses. The low-flow statistics summarized are the 1Q10, 7Q10, 30Q10, and harmonic mean. Low-flow statistics were estimated at 34 partial-record stream sites throughout Chester County.

  6. View east of the wye at Maryland Junction, West Virginia, ...

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

    View east of the wye at Maryland Junction, West Virginia, milepost 164, with the Cumberland Extension entering at right. The diesel shop (built 1956) is at left. The WM continued northwest to Ridgeley Yard, and onto the passenger station in downtown Cumberland (out of view at upper left). The WM's Thomas Subivision went south to Elkins, West Virginia (lower left). - Western Maryland Railway, Cumberland Extension, Pearre to North Branch, from WM milepost 125 to 160, Pearre, Washington County, MD

  7. 2014 Advanced Placement Exam Participation and Performance for Students in Montgomery County Public Schools and Public School Students in the State of Maryland and the Nation. Memorandum

    ERIC Educational Resources Information Center

    Sanderson, Geoffrey T.

    2014-01-01

    The continuing emphasis by Montgomery County (Maryland) Public Schools (MCPS) on rigorous course taking resulted in MCPS students taking a record-setting 33,662 Advanced Placement (AP) exams in 2014. Additionally, the percentage of AP exams taken by MCPS students who attained scores of 3 or higher (73.9 percent) was 13.0 and 16.7 percentage points…

  8. Single-shot digital holography by use of the fractional Talbot effect.

    PubMed

    Martínez-León, Lluís; Araiza-E, María; Javidi, Bahram; Andrés, Pedro; Climent, Vicent; Lancis, Jesús; Tajahuerce, Enrique

    2009-07-20

    We present a method for recording in-line single-shot digital holograms based on the fractional Talbot effect. In our system, an image sensor records the interference between the light field scattered by the object and a properly codified parallel reference beam. A simple binary two-dimensional periodic grating is used to codify the reference beam generating a periodic three-step phase distribution over the sensor plane by fractional Talbot effect. This provides a method to perform single-shot phase-shifting interferometry at frame rates only limited by the sensor capabilities. Our technique is well adapted for dynamic wavefront sensing applications. Images of the object are digitally reconstructed from the digital hologram. Both computer simulations and experimental results are presented.

  9. Free space and waveguide Talbot effect: phase relations and planar light circuit applications

    NASA Astrophysics Data System (ADS)

    Nikkhah, H.; Zheng, Q.; Hasan, I.; Abdul-Majid, S.; Hall, T. J.

    2012-10-01

    Optical fields that are periodic in the transverse plane self-image periodically as they propagate along the optical axis: a phenomenon known as the Talbot effect. A transfer matrix may be defined that relates the amplitude and phase of point sources placed on a particular grid at the input to their respective multiple images at an image plane. The free-space Talbot effect may be mapped to the waveguide Talbot effect. Applying this mapping to the transfer matrix enables the prediction of the phase and amplitude relations between the ports of a Multimode Interference (MMI) coupler- a planar waveguide device. The transfer matrix approach has not previously been applied to the free-space case and its mapping to the waveguide case provides greater clarity and physical insight into the phase relationships than previous treatments. The paper first introduces the underlying physics of the Talbot effect in free space with emphasis on the positions along the optical axis at which images occur; their multiplicity; and their relative phase relations determined by the Gauss Quadratic Sum of number theory. The analysis is then adapted to predict the phase relationships between the ports of an MMI. These phase relationships are critical to planar light circuit (PLC) applications such as 90° optical hybrids for coherent optical receiver front-ends, external optical I-Q modulators for coherent optical transmitters; and optical phased array switches. These applications are illustrated by results obtained from devices that have been fabricated and tested by the PTLab in Si micro-photonic integration platforms.

  10. County business patterns, 1996 : Maryland

    DOT National Transportation Integrated Search

    1998-11-01

    County Business Patterns is an annual series that : provides subnational economic data by industry. The series : is useful for studying the economic activity of small areas; : analyzing economic changes over time; and as a benchmark : for statistical...

  11. County business patterns, 1997 : Maryland

    DOT National Transportation Integrated Search

    1999-09-01

    County Business Patterns is an annual series that provides : subnational economic data by industry. The series is : useful for studying the economic activity of small areas; : analyzing economic changes over time; and as a benchmark : for statistical...

  12. Quantum information processing by weaving quantum Talbot carpets

    NASA Astrophysics Data System (ADS)

    Farías, Osvaldo Jiménez; de Melo, Fernando; Milman, Pérola; Walborn, Stephen P.

    2015-06-01

    Single-photon interference due to passage through a periodic grating is considered in a novel proposal for processing D -dimensional quantum systems (quDits) encoded in the spatial degrees of freedom of light. We show that free-space propagation naturally implements basic single-quDit gates by means of the Talbot effect: an intricate time-space carpet of light in the near-field diffraction regime. By adding a diagonal phase gate, we show that a complete set of single-quDit gates can be implemented. We then introduce a spatially dependent beam splitter that allows for projective measurements in the computational basis and can be used for the implementation of controlled operations between two quDits. Universal quantum information processing can then be implemented with linear optics and ancilla photons via postselection and feed-forward following the original proposal of Knill-Laflamme and Milburn. Although we consider photons, our scheme should be directly applicable to a number of other physical systems. Interpretation of the Talbot effect as a quantum logic operation provides a beautiful and interesting way to visualize quantum computation through wave propagation and interference.

  13. Make Development Decisions Predictable and Fair: Green Tape Program, Silver Spring, Maryland

    EPA Pesticide Factsheets

    Montgomery County's Green Tape program is making redevelopment in Silver Spring, Maryland, faster and more cost effective by speeding the permitting process for development in the mixed-use city center.

  14. Geological survey of Maryland using EREP flight data. [mining, mapping, Chesapeake Bay islands, coastal water features

    NASA Technical Reports Server (NTRS)

    Weaver, K. N. (Principal Investigator)

    1973-01-01

    The author has identified the following significant results. Underflight photography has been used in the Baltimore County mined land inventory to determine areas of disturbed land where surface mining of sand and ground clay, or stone has taken place. Both active and abandoned pits and quarries were located. Aircraft data has been used to update cultural features of Calvert, Caroline, St. Mary's, Somerset, Talbot, and Wicomico Counties. Islands have been located and catalogued for comparison with older film and map data for erosion data. Strip mined areas are being mapped to obtain total area disturbed to aid in future mining and reclamation problems. Coastal estuarine and Atlantic Coast features are being studied to determine nearshore bedforms, sedimentary, and erosional patterns, and manmade influence on natural systems.

  15. Selected Financial and Enrollment Data: Maryland Community Colleges.

    ERIC Educational Resources Information Center

    Henard, Kay F.; Adelman, Stanley I.

    The historical and descriptive data provided in this report offer an overview of enrollments and finances in the community colleges of Maryland. Section 1 reviews enrollments in postsecondary education between 1955 and 1982, percentages of residents enrolled in colleges by city or county, birth rates between 1961 and 1981, and actual and projected…

  16. Selected Financial and Enrollment Data: Maryland Community Colleges.

    ERIC Educational Resources Information Center

    Maryland State Board for Community Colleges, Annapolis.

    The data provided in this report offer information about the enrollment and financing of community colleges in Maryland. Section I reviews enrollments in postsecondary education between 1955 and 1981, percentages of residents enrolled in colleges by city or county, birth rates between 1960 and 1980, and actual and projected figures for high school…

  17. Stream water quality in the coal region of West Virginia and Maryland

    Treesearch

    Kenneth L. Dyer

    1982-01-01

    This report is a compilation of water quality data for 118 small streams sampled in 27 counties of West Virginia and nine streams in two counties of western Maryland. Forty-eight of these streams drain unmined watersheds; 79 drain areas where coal has been surface mined. Most of these streams were sampled at approximate monthly intervals. The water quality data from...

  18. Self-Focusing and the Talbot Effect in Conformal Transformation Optics.

    PubMed

    Wang, Xiangyang; Chen, Huanyang; Liu, Hui; Xu, Lin; Sheng, Chong; Zhu, Shining

    2017-07-21

    Transformation optics has been used to propose various novel optical devices. With the help of metamaterials, several intriguing designs, such as invisibility cloaks, have been implemented. However, as the basic units should be much smaller than the working wavelengths to achieve the effective material parameters, and the sizes of devices should be much larger than the wavelengths of illumination to work within the light-ray approximation, it is a big challenge to implement an experimental system that works simultaneously for both geometric optics and wave optics. In this Letter, by using a gradient-index microstructured optical waveguide, we realize a device of conformal transformation optics (CTO) and demonstrate its self-focusing property for geometry optics and the Talbot effect for wave optics. In addition, the Talbot effect in such a system has a potential application to transfer digital information without diffraction. Our findings demonstrate the photon controlling ability of CTO in a feasible experiment system.

  19. Self-Focusing and the Talbot Effect in Conformal Transformation Optics

    NASA Astrophysics Data System (ADS)

    Wang, Xiangyang; Chen, Huanyang; Liu, Hui; Xu, Lin; Sheng, Chong; Zhu, Shining

    2017-07-01

    Transformation optics has been used to propose various novel optical devices. With the help of metamaterials, several intriguing designs, such as invisibility cloaks, have been implemented. However, as the basic units should be much smaller than the working wavelengths to achieve the effective material parameters, and the sizes of devices should be much larger than the wavelengths of illumination to work within the light-ray approximation, it is a big challenge to implement an experimental system that works simultaneously for both geometric optics and wave optics. In this Letter, by using a gradient-index microstructured optical waveguide, we realize a device of conformal transformation optics (CTO) and demonstrate its self-focusing property for geometry optics and the Talbot effect for wave optics. In addition, the Talbot effect in such a system has a potential application to transfer digital information without diffraction. Our findings demonstrate the photon controlling ability of CTO in a feasible experiment system.

  20. Quasi-Talbot effect of orbital angular momentum beams for generation of optical vortex arrays by multiplexing metasurface design.

    PubMed

    Gao, Hui; Li, Yang; Chen, Lianwei; Jin, Jinjin; Pu, Mingbo; Li, Xiong; Gao, Ping; Wang, Changtao; Luo, Xiangang; Hong, Minghui

    2018-01-03

    The quasi-Talbot effect of orbital angular momentum (OAM) beams, in which the centers are placed in a rotationally symmetric position, is demonstrated both numerically and experimentally for the first time. Since its multiplication factor is much higher than the conventional fractional Talbot effect, the quasi-Talbot effect can be used in the generation of vortex beam arrays. A metasurface based on this theory was designed and fabricated to test the validity of this assumption. The agreement between the numerical and measured results suggests the practicability of this method to realize vortex beam arrays with high integrated levels, which can open a new door to achieve various potential uses related to optical vortex arrays in integrated optical systems for wide-ranging applications.

  1. High resolution Talbot self-imaging applied to structural characterization of self-assembled monolayers of microspheres.

    PubMed

    Garcia-Sucerquia, J; Alvarez-Palacio, D C; Kreuzer, H J

    2008-09-10

    We report the observation of the Talbot self-imaging effect in high resolution digital in-line holographic microscopy (DIHM) and its application to structural characterization of periodic samples. Holograms of self-assembled monolayers of micron-sized polystyrene spheres are reconstructed at different image planes. The point-source method of DIHM and the consequent high lateral resolution allows the true image (object) plane to be identified. The Talbot effect is then exploited to improve the evaluation of the pitch of the assembly and to examine defects in its periodicity.

  2. Settle for Segregation or Strive for Diversity? A Defining Moment for Maryland's Public Schools

    ERIC Educational Resources Information Center

    Ayscue, Jennifer B.

    2013-01-01

    Maryland, as one of 17 states that had de jure segregation, has an intense history of school segregation. Following the 1954 Brown decision, school districts across the state employed various methods to desegregate their schools, including mandatory busing in Prince George's County, magnet schools in Montgomery County, and a freedom of choice plan…

  3. Laser Surface Microstructuring of Biocompatible Materials Using a Microlens Array and the Talbot Effect: Evaluation of the Cell Adhesion.

    PubMed

    Aymerich, María; Nieto, Daniel; Álvarez, Ezequiel; Flores-Arias, María T

    2017-02-22

    A laser based technique for microstructuring titanium and tantalum substrates using the Talbot effect and an array of microlenses is presented. By using this hybrid technique; we are able to generate different patterns and geometries on the top surfaces of the biomaterials. The Talbot effect allows us to rapidly make microstructuring, solving the common problems of using microlenses for multipatterning; where the material expelled during the ablation of biomaterials damages the microlens. The Talbot effect permits us to increase the working distance and reduce the period of the patterns. We also demonstrate that the geometries and patterns act as anchor points for cells; affecting the cell adhesion to the metallic substrates and guiding how they spread over the material.

  4. Forest wildlife habitat statistics for Maryland and Delaware--1986

    Treesearch

    Robert T. Brooks; Dawn M. DiGiovanni; Dawn M. DiGiovanni

    1989-01-01

    A statistical report on the forest wildlife habitat survey of Maryland and Delaware (1986). Findings are displayed in 11 8 tables covering forest area, landscape pattern, mast potential, standing dead and cavity trees; and understory woody-stemmed vegetation. Data are presented at county and/or unit and state levels of resolution.

  5. Effects of automated speed enforcement in Montgomery County, Maryland, on vehicle speeds, public opinion, and crashes.

    PubMed

    Hu, Wen; McCartt, Anne T

    2016-09-01

    In May 2007, Montgomery County, Maryland, implemented an automated speed enforcement program, with cameras allowed on residential streets with speed limits of 35 mph or lower and in school zones. In 2009, the state speed camera law increased the enforcement threshold from 11 to 12 mph over the speed limit and restricted school zone enforcement hours. In 2012, the county began using a corridor approach, in which cameras were periodically moved along the length of a roadway segment. The long-term effects of the speed camera program on travel speeds, public attitudes, and crashes were evaluated. Changes in travel speeds at camera sites from 6 months before the program began to 7½ years after were compared with changes in speeds at control sites in the nearby Virginia counties of Fairfax and Arlington. A telephone survey of Montgomery County drivers was conducted in Fall 2014 to examine attitudes and experiences related to automated speed enforcement. Using data on crashes during 2004-2013, logistic regression models examined the program's effects on the likelihood that a crash involved an incapacitating or fatal injury on camera-eligible roads and on potential spillover roads in Montgomery County, using crashes in Fairfax County on similar roads as controls. About 7½ years after the program began, speed cameras were associated with a 10% reduction in mean speeds and a 62% reduction in the likelihood that a vehicle was traveling more than 10 mph above the speed limit at camera sites. When interviewed in Fall 2014, 95% of drivers were aware of the camera program, 62% favored it, and most had received a camera ticket or knew someone else who had. The overall effect of the camera program in its modified form, including both the law change and the corridor approach, was a 39% reduction in the likelihood that a crash resulted in an incapacitating or fatal injury. Speed cameras alone were associated with a 19% reduction in the likelihood that a crash resulted in an

  6. Corporate preparedness for pandemic influenza: a survey of pharmaceutical and biotechnology companies in Montgomery County, Maryland.

    PubMed

    Watkins, Rissah J; Barnett, Daniel J; Links, Jonathan M

    2008-09-01

    We conducted a survey of corporate preparedness for pandemic influenza among biotechnology and pharmaceutical companies in Montgomery County, Maryland, to determine the level of preparedness for this industry and geographic region. The survey, based on the HHS Business Pandemic Influenza Planning Checklist, established whether a company had a preparedness plan specific to pandemic influenza, the contents of its plan, or its reasons for a lack of a plan. A total of 50 companies participated in the survey. Of these, 40 did not have any type of preparedness plan, 3 were drafting plans, 6 had general preparedness plans that could be applied to an influenza pandemic, and only 1 company had a preparedness plan specifically designed to address pandemic influenza. Biotechnology and pharmaceutical companies in this geographic region are currently not well prepared for pandemic influenza. Public health officials should offer more help, possibly in the form of a model small business preparedness plan, and collaboration between companies should be encouraged to foster sharing of preparedness plans.

  7. Laser Surface Microstructuring of Biocompatible Materials Using a Microlens Array and the Talbot Effect: Evaluation of the Cell Adhesion

    PubMed Central

    Aymerich, María; Nieto, Daniel; Álvarez, Ezequiel; Flores-Arias, María T.

    2017-01-01

    A laser based technique for microstructuring titanium and tantalum substrates using the Talbot effect and an array of microlenses is presented. By using this hybrid technique; we are able to generate different patterns and geometries on the top surfaces of the biomaterials. The Talbot effect allows us to rapidly make microstructuring, solving the common problems of using microlenses for multipatterning; where the material expelled during the ablation of biomaterials damages the microlens. The Talbot effect permits us to increase the working distance and reduce the period of the patterns. We also demonstrate that the geometries and patterns act as anchor points for cells; affecting the cell adhesion to the metallic substrates and guiding how they spread over the material. PMID:28772574

  8. Experimental research on the feature of an x-ray Talbot-Lau interferometer versus tube accelerating voltage

    NASA Astrophysics Data System (ADS)

    Wang, Sheng-Hao; Margie, P. Olbinado; Atsushi, Momose; Hua-Jie, Han; Hu, Ren-Fang; Wang, Zhi-Li; Gao, Kun; Zhang, Kai; Zhu, Pei-Ping; Wu, Zi-Yu

    2015-06-01

    X-ray Talbot-Lau interferometer has been used most widely to perform x-ray phase-contrast imaging with a conventional low-brilliance x-ray source, and it yields high-sensitivity phase and dark-field images of samples producing low absorption contrast, thus bearing tremendous potential for future clinical diagnosis. In this work, by changing the accelerating voltage of the x-ray tube from 35 kV to 45 kV, x-ray phase-contrast imaging of a test sample is performed at each integer value of the accelerating voltage to investigate the characteristic of an x-ray Talbot-Lau interferometer (located in the Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Japan) versus tube voltage. Experimental results and data analysis show that within a range this x-ray Talbot-Lau interferometer is not sensitive to the accelerating voltage of the tube with a constant fringe visibility of ˜ 44%. This x-ray Talbot-Lau interferometer research demonstrates the feasibility of a new dual energy phase-contrast x-ray imaging strategy and the possibility to collect a refraction spectrum. Project supported by the Major State Basic Research Development Program of China (Grant No. 2012CB825800), the Science Fund for Creative Research Groups, China (Grant No. 11321503), the National Natural Science Foundation of China (Grant Nos. 11179004, 10979055, 11205189, and 11205157), and the Japan-Asia Youth Exchange Program in Science (SAKURA Exchange Program in Science) Administered by the Japan Science and Technology Agency.

  9. Summary of Organic Wastewater Compounds and Other Water-Quality Data in Charles County, Maryland, October 2007 through August 2008

    USGS Publications Warehouse

    Lorah, Michelle M.; Soeder, Daniel J.; Teunis, Jessica A.

    2010-01-01

    The U.S. Geological Survey, in cooperation with the government of Charles County, Maryland, and the Port Tobacco River Conservancy, Inc., conducted a water-quality reconnaissance and sampling investigation of the Port Tobacco River and Nanjemoy Creek watersheds in Charles County during October 2007 and June-August 2008. Samples were collected and analyzed for major ions, nutrients, organic wastewater compounds, and other selected constituents from 17 surface-water sites and 11 well sites (5 of which were screened in streambed sediments to obtain porewater samples). Most of the surface-water sites were relatively widely spaced throughout the Port Tobacco River and Nanjemoy Creek watersheds, although the well sites and some associated surface-water sites were concentrated in one residential community along the Port Tobacco River that has domestic septic systems. Sampling for enterococci bacteria was conducted by the Port Tobacco River Conservancy, Inc., at each site to coordinate with the sampling for chemical constituents. The purpose of the coordinated sampling was to determine correlations between historically high, in-stream bacteria counts and human wastewater inputs. Chemical data for the groundwater, porewater, and surface-water samples are presented in this report.

  10. Buying Renewable Electric Power in Montgomery County, Maryland

    NASA Astrophysics Data System (ADS)

    Cember, Richard P.

    2008-08-01

    From mid-August 2007 until mid-August 2008, my home electricity supply was 100% wind-generated. My experience in switching to wind-generated electric power may be of interest to fellow AGU members for three reasons. First, Montgomery County, Md., where I live, is one of the few jurisdictions in the United States that has both an electric power tax and a renewable energy credit. The county is therefore a case study in price-based public policy for greenhouse gas emissions control. Second, I was surprised by the comparatively small price difference (or ``price premium'') between wind-generated and conventionally generated power in the county, and I believe that Eos readers will be similarly surprised. Third, because so many U.S. federal agencies concerned with Earth science are based in the Washington, D. C., area, a high concentration of AGU members live in Montgomery County and may be personally interested in evaluating the price of reducing carbon dioxide emissions from the generation of their own residential electricity.

  11. The Private Management of Public Schools: The Baltimore, Maryland, Experience.

    ERIC Educational Resources Information Center

    Doughty, Sherri

    In 1992 the Baltimore City Public School District (Maryland) entered into a 5-year contract with Education Alternatives, Incorporated (EAI), to manage 9 of its schools. Baltimore's private-management model differed significantly from that of Dade County, Florida, in that EAI was given overall management responsibility. Data were gathered through a…

  12. Satellite data for surface-mine inventory. [in Maryland

    NASA Technical Reports Server (NTRS)

    Anderson, A. T.; Schultz, D.; Buchman, N.; Nock, M.

    1976-01-01

    To determine the feasibility of satellite data for surface-mine inventory, particularly as it applies to coal, a case study was conducted in Maryland. A band-ratio method was developed to measure disturbed surface areas, and it proved to be extendible both temporally and geographically. This method was used to measure area changes in the region over three time periods from September 1972 through July 1974 and to map the entire two-county area for 1973. For mines ranging between 31 and 244 acres (12 to 98 hectares) the measurement accuracy of total affected acreage was determined to be 92%. Mines of 120 acres (50 hectares) and larger were measured with greater accuracy, some within one percent of the actual area. The ability to identify, classify, and measure strip-mine surfaces in a two-county area (1,541 square kilometers - 595 square miles) of western Maryland was demonstrated through the use of computer processing. On the basis of these results the use of LANDSAT satellite data and multilevel sampling of aircraft and field verification inspections, multispectral analysis of digital data is shown to be an effective, rapid, and accurate means of monitoring the surface mining cycle.

  13. Vascular flora of Douglas Point, Charles County, Maryland. Final report

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Miles, K.J.

    1980-01-01

    The environment and vascular flora of a 561 hectare (1400 acre) site on the western shore of the Chesapeake Bay in Maryland are described. Six habitats are represented: mixed hardwood forest, pine forest, open field, freshwater marsh, shrub swamp, and tree swamp. An annotated list of 531 species is included.

  14. Seven-year results in managing a small woodlot in southern Maryland

    Treesearch

    Richard H. Fenton; Ralph P. Broomall

    1963-01-01

    In the five Maryland counties south of Baltimore, there are 825,000 acres of commercial forest land. About half of this area is estimated to be in true farm woodlands; that is, in small tracts of 40 acres or so that are part of working farms.

  15. Trends in Degrees and Certificates, by Program. Maryland Higher Education Institutions.

    ERIC Educational Resources Information Center

    Maryland State Higher Education Commission, Annapolis.

    This report presents trend data for degrees and certificates, by program, for the years 1983-1996 for Maryland higher education institutions. Data tables are included for: (1) the following community colleges: Allegany; Anne Arundel; Baltimore City; Carroll; Catonsville; Cecil; Charles County; Chesapeake; Dundalk; Essex; Frederick; Garrett;…

  16. 4. NORTH ELEVATION, SHOWING COLLAPSED MARYLAND NEW RIVER COAL COMPANY ...

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

    4. NORTH ELEVATION, SHOWING COLLAPSED MARYLAND NEW RIVER COAL COMPANY ADDITION, WITH REFUSE CONVEYOR (FOREGROUND), TIMBER REFUSE BIN (LEFT), CONVEYOR HOUSE AND SCREENING ROOM (CENTER), AND COAL STORAGE SILO (RIGHT), LOOKING EAST - Nuttallburg Mine Complex, Tipple, North side of New River, 2.7 miles upstream from Fayette Landing, Lookout, Fayette County, WV

  17. Map showing landslide susceptibility in Prince Georges County, Maryland

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Pomeroy, J.S.

    1989-01-01

    Prince Georges County was identified during a statewide investigation of landslide susceptibility (MF-2048) as the county with the most serious slope-stability problems. This map uses a ranking system ranging from 1 (nil to very low susceptibility) to 4 (moderate to severe susceptibility). Geologic factors and precipitation are major elements in the initiation of landslides in the county. The Potomac Group and the Marlboro Clay are the most slideprone units. This map should enable users to make a rapid, generalized evaluation of the potential for mass movement. Planners, engineers, soil scientists, geologist, university faculty, and elected officials should find it usefulmore » in the assessment of slope hazards for county-wide analyses.« less

  18. Maryland State Department of Education Reporting of Highly Qualified Teachers. Memorandum

    ERIC Educational Resources Information Center

    Starr, Joshua P.

    2014-01-01

    The federal "No Child Left Behind Act of 2001" (NCLB) legislation required school districts to ensure that all teachers of core academic subjects met the requirements to be designated highly qualified by July 1, 2006. However, because no Maryland counties were able to comply with the 100 percent highly qualified designation by July 1,…

  19. 7. INTERIOR, ROBERTS AND SCHAEFER SHAKER TABLE (LEFT), MARYLAND NEW ...

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

    7. INTERIOR, ROBERTS AND SCHAEFER SHAKER TABLE (LEFT), MARYLAND NEW RIVER COAL COMPANY INSTALLED APRON CONVEYOR (RIGHT) USED TO CONVEY COAL TO THE BELKNAP CHORIDE WASHER, RETURN CHUTE FOR CLEANED COAL (FAR RIGHT), AND COAL STORAGE SILO (BACKGROUND), LOOKING WEST - Nuttallburg Mine Complex, Tipple, North side of New River, 2.7 miles upstream from Fayette Landing, Lookout, Fayette County, WV

  20. Talbot effect of the defective grating in deep Fresnel region

    NASA Astrophysics Data System (ADS)

    Teng, Shuyun; Wang, Junhong; Zhang, Wei; Cui, Yuwei

    2015-02-01

    Talbot effect of the grating with different defect is studied theoretically and experimentally in this paper. The defects of grating include the loss of the diffraction unit, the dislocation of the diffraction unit and the modulation of the unit separation. The exact diffraction distributions of three kinds of defective gratings are obtained according to the finite-difference time-domain (FDTD) method. The calculation results show the image of the missing or dislocating unit appears at the Talbot distance (as mentioned in K. Patorski Prog. Opt., 27, 1989, pp.1-108). This is the so-called self-repair ability of grating imaging. In addition, some more phenomena are discovered. The loss or the dislocation of diffraction unit causes the diffraction distortion within a certain radial angle. The regular modulation of unit separation changes the original diffraction, but the new periodicity of the diffraction distribution rebuilds. The self-imaging of grating with smaller random modulation still keeps the partial self-repair ability, and yet this characteristic depends on the modulation degree of defective grating. These diffraction phenomena of the defective gratings are explained by use of the diffraction theory of grating. The practical experiment is also performed and the experimental results confirm the theoretic predictions.

  1. Maryland.gov - Official Website of the State of Maryland

    Science.gov Websites

    Marylanders $46 Million by Permanently Eliminating E-ZPass Transponder Fee Provides Free E-ZPass Transponders check out Maryland's Summer of Music lineup Learn More License-Free Fishing Days Maryland Free fishing

  2. On the Right Track: Southern Maryland Schools Revamp Their Curriculum around Tech Prep.

    ERIC Educational Resources Information Center

    Leftwich, Kathy

    1992-01-01

    In St. Mary's County (Maryland) schools' revamped curriculum, tech prep encompasses four clusters: applied business/management, applied engineering/mechanics, applied health/human services, and college prep. Career counselors help eighth graders choose a cluster and monitor their satisfaction with their choice, allowing them to change until junior…

  3. Reforestation species study on a reclaimed surface mine in western Maryland

    Treesearch

    Jay A. Engle

    1980-01-01

    Westvaco Forest Research established a species comparison test including eighteen species of trees in the spring of 1978 on a recently reclaimed surface mine in Garrett County, Maryland. After two growing seasons height growth of all species has not been impressive. Seven species have better than 75 percent survival with pitch pine being best. Seven other species have...

  4. 75 FR 31835 - Environmental Impact Statement: Calvert and St. Mary's Counties, MD

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-04

    ...: Calvert and St. Mary's Counties, MD AGENCY: Federal Highway Administration (FHWA), DOT. ACTION: Notice of... project in Calvert and St. Mary's Counties, Maryland (Federal Register Vol. 72, No. 203; FR Doc. 07-5190... replacement of MD 4 from MD 2 to MD 235 in Calvert and St. Mary's Counties, a distance of approximately 4.1...

  5. Test drilling and aquifer test in the Marburg schist near Mount Airy, Frederick County, Maryland

    USGS Publications Warehouse

    Meyer, Gerald

    1955-01-01

    This memorandum summarizes briefly the data obtained by test drilling and in an aquifer test at Mount Airy, Md. The tests were a part of the State - Federal cooperative study of the ground-water resources of Frederick County, and it is intended that a more complete analysis of the test data will be included in a future report describing the ground-water resource of Frederick County. The purpose of this memorandum is to make the test data immediately available to the general public. Mount Airy is located along the Carroll-Frederick County boundary bout 2 miles north of the intersection of U.S. Highway 40 with the county boundary. Its population is approximately 1,000. The municipal well field, consisting of two drilled wells (fig. 1) is in a valley about one-half mile west of the center of Mount Airy, within about 400 feet of a small stream, and north of Prospect Road. Well 1, about 40 feet north of Prospect Road, is 125 feet deep, 8 inches in diameter, and reportedly yielded 265 gallons per minute (gpm) in 1947 and 201 gpm in a half hour test in March 1955. The writer determined during the tests described in this memorandum that the well has about 34 feet of casing. Well 2, 85 feet north of well 1, is 96 feet deep, 8 inches in diameter, and reportedly yielded 120 gpm in 1947 and 127 gpm in a half hour test in March 1955. The wells are equipped with deep-well turbine pumps powered by electric motors. Cenorally only well 1 is used, and it is pumped for only a few short intervals each day to meet the water requirements of the town (about 75,000 - 80,000 gallons daily). The reported yields of these wells are considerably higher than the average for crystalline-rock wells in the Piedmont of Maryland. The test drilling was done under contract with Edward I. Brown, well driller, between May 3 and May 12, 1955. Water-supply facilities of the town of Mount Airy were kindly made available for the aquifer tests from May 22 to May 30, 1955. The pumping tests consisted of a

  6. 75 FR 18778 - Safety Zone; Ocean City Air Show 2010, Atlantic Ocean, Ocean City, MD

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-13

    ...-AA00 Safety Zone; Ocean City Air Show 2010, Atlantic Ocean, Ocean City, MD AGENCY: Coast Guard, DHS... zone on the Atlantic Ocean in the vicinity of Ocean City, Maryland to support the Ocean City Air Show..., 5, and 6, 2010 Ocean City, Maryland will host an air show event on the Atlantic Ocean between Talbot...

  7. Somerset County Employer Needs Assessment.

    ERIC Educational Resources Information Center

    Rephann, Terance J.

    Allegany Community College in Cumberland, Maryland, conducted an employer assessment survey of Somerset County businesses during the winter of 1995 in order to provide evaluation data for planning and curriculum development for the secondary and postsecondary educational institutions. The survey was mailed to 760 establishments, with a 29 percent…

  8. Onion cell imaging by using Talbot/self-imaging effect

    NASA Astrophysics Data System (ADS)

    Agarwal, Shilpi; Kumar, Varun; Shakher, Chandra

    2017-08-01

    This paper presents the amplitude and phase imaging of onion epidermis cell using the self-imaging capabilities of a grating (Talbot effect) in visible light region. In proposed method, the Fresnel diffraction pattern from the first grating and object is recorded at self-image plane. Fast Fourier Transform (FFT) is used for extracting the 3D amplitude and phase image of onion epidermis cell. The stability of the proposed system, from environmental perturbation as well as its compactness and portability give the proposed system a high potential for several clinical applications.

  9. 75 FR 65294 - Southern Maryland Electric Cooperative: Notice of Finding of No Significant Impact

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-10-22

    ... Significant Impact (FONSI) for the Environmental Assessment (EA) associated with the Holland Cliff to Hewitt Road 230 kV Transmission proposal in Calvert and St. Mary's Counties, Maryland. The EA was prepared..., Environmental Policies and Procedures). The purpose of the EA was to evaluate the potential environmental...

  10. Nonlinear Talbot effect of rogue waves.

    PubMed

    Zhang, Yiqi; Belić, Milivoj R; Zheng, Huaibin; Chen, Haixia; Li, Changbiao; Song, Jianping; Zhang, Yanpeng

    2014-03-01

    Akhmediev and Kuznetsov-Ma breathers are rogue wave solutions of the nonlinear Schrödinger equation (NLSE). Talbot effect (TE) is an image recurrence phenomenon in the diffraction of light waves. We report the nonlinear TE of rogue waves in a cubic medium. It is different from the linear TE, in that the wave propagates in a NL medium and is an eigenmode of NLSE. Periodic rogue waves impinging on a NL medium exhibit recurrent behavior, but only at the TE length and at the half-TE length with a π-phase shift; the fractional TE is absent. The NL TE is the result of the NL interference of the lobes of rogue wave breathers. This interaction is related to the transverse period and intensity of breathers, in that the bigger the period and the higher the intensity, the shorter the TE length.

  11. Wavefront sensor based on the Talbot effect with the precorrected holographic grating.

    PubMed

    Podanchuk, Dmytro; Kurashov, Vitalij; Goloborodko, Andrey; Dan'ko, Volodymyr; Kotov, Myhaylo; Goloborodko, Natalya

    2012-04-01

    A holographic wavefront sensor based on the Talbot effect is proposed. Optical wavefronts are measured by sampling the light amplitude distribution with a two-dimensional (2D) precorrected holographic grating. The factors that allow changing an angular measurement range and a spatial resolution of the sensor are discussed. A comparative analysis with the Shack-Hartmann sensor is illustrated with some experimental results.

  12. Coherent addition of high power broad-area laser diodes with a compact VBG V-shaped external Talbot cavity

    DOE PAGES

    Liu, Bo; Braiman, Yehuda

    2018-02-06

    In this paper, we introduced a compact V-shaped external Talbot cavity for phase locking of high power broad-area laser diodes. The length of compact cavity is ~25 mm. Near diffraction-limit coherent addition of 10 broad-area laser diodes indicated that high quality phase locking was achieved. We measured the near-field emission mode of each individual broad-area laser diode with different feedback, such as a volume Bragg grating and a high reflection mirror. Finally, we found out that the best result of phase locking broad-area laser diodes was achieved by the compact V-shaped external Talbot cavity with volume Bragg grating feedback.

  13. Coherent addition of high power broad-area laser diodes with a compact VBG V-shaped external Talbot cavity

    NASA Astrophysics Data System (ADS)

    Liu, Bo; Braiman, Yehuda

    2018-05-01

    We introduced a compact V-shaped external Talbot cavity for phase locking of high power broad-area laser diodes. The length of compact cavity is ∼25 mm. Near diffraction-limit coherent addition of 10 broad-area laser diodes indicated that high quality phase locking was achieved. We measured the near-field emission mode of each individual broad-area laser diode with different feedback, such as a volume Bragg grating and a high reflection mirror. We found out that the best result of phase locking broad-area laser diodes was achieved by the compact V-shaped external Talbot cavity with volume Bragg grating feedback.

  14. Coherent addition of high power broad-area laser diodes with a compact VBG V-shaped external Talbot cavity

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Liu, Bo; Braiman, Yehuda

    In this paper, we introduced a compact V-shaped external Talbot cavity for phase locking of high power broad-area laser diodes. The length of compact cavity is ~25 mm. Near diffraction-limit coherent addition of 10 broad-area laser diodes indicated that high quality phase locking was achieved. We measured the near-field emission mode of each individual broad-area laser diode with different feedback, such as a volume Bragg grating and a high reflection mirror. Finally, we found out that the best result of phase locking broad-area laser diodes was achieved by the compact V-shaped external Talbot cavity with volume Bragg grating feedback.

  15. 78 FR 38001 - Special Local Regulations; Marine Events, Breton Bay; St. Mary's County, Leonardtown, MD

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-25

    ...-AA08 Special Local Regulations; Marine Events, Breton Bay; St. Mary's County, Leonardtown, MD AGENCY... marine event to be held on the waters of Breton Bay in St. Mary's County, Maryland on July 13, 2013, and... ``Special Local Regulations; Marine Events, Breton Bay; St. Mary's County, Leonardtown, MD'' in the Federal...

  16. Sediment contributions from floodplains and legacy sediments to Piedmont streams of Baltimore County, Maryland

    NASA Astrophysics Data System (ADS)

    Donovan, Mitchell; Miller, Andrew; Baker, Matthew; Gellis, Allen

    2015-04-01

    Disparity between watershed erosion rates and downstream sediment delivery has remained an important theme in geomorphology for many decades, with the role of floodplains in sediment storage as a common focus. In the Piedmont Province of the eastern USA, upland deforestation and agricultural land use following European settlement led to accumulation of thick packages of overbank sediment in valley bottoms, commonly referred to as legacy deposits. Previous authors have argued that legacy deposits represent a potentially important source of modern sediment loads following remobilization by lateral migration and progressive channel widening. This paper seeks to quantify (1) rates of sediment remobilization from Baltimore County floodplains by channel migration and bank erosion, (2) proportions of streambank sediment derived from legacy deposits, and (3) potential contribution of net streambank erosion and legacy sediments to downstream sediment yield within the Mid-Atlantic Piedmont. We calculated measurable gross erosion and deposition rates within the fluvial corridor along 40 valley segments from 18 watersheds with drainage areas between 0.18 and 155 km2 in Baltimore County, Maryland. We compared stream channel and floodplain morphology from lidar-based digital elevation data collected in 2005 with channel positions recorded on 1:2400 scale topographic maps from 1959-1961 in order to quantify 44-46 years of channel change. Sediment bulk density and particle size distributions were characterized from streambank and channel deposit samples and used for volume to mass conversions and for comparison with other sediment sources. Average annual lateral migration rates ranged from 0.04 to 0.19 m/y, which represented an annual migration of 2.5% (0.9-4.4%) channel width across all study segments, suggesting that channel dimensions may be used as reasonable predictors of bank erosion rates. Gross bank erosion rates varied from 43 to 310 Mg/km/y (median = 114) and were

  17. Occurrence and distribution of microbiological contamination and enteric viruses in shallow ground water in Baltimore and Harford counties, Maryland

    USGS Publications Warehouse

    Banks, William S.L.; Battigelli, David A.

    2002-01-01

    The U.S. Geological Survey, in cooperation with the Maryland Department of the Environment and the Wisconsin State Laboratory of Hygiene, conducted a study to characterize the occurrence and distribution of viral contamination in small (withdrawing less than 10,000 gallons per day) public water-supply wells screened in the shallow aquifer in the Piedmont Physiographic Province in Baltimore and Harford Counties, Maryland. Two hundred sixty-three small public water-supply wells were in operation in these counties during the spring of 2000. Ninety-one of these sites were selected for sampling using a methodology that distributed the samples evenly over the population and the spatial extent of the study area. Each site, and its potential susceptibility to microbiological contamination, was evaluated with regard to hole depth, casing interval, and open interval. Each site was evaluated using characteristics such as on-site geology and on-site land use.Samples were collected by pumping between 200 and 400 gallons of untreated well water through an electropositive cartridge filter. Water concentrates were subjected to cell-culture assay for the detection of culturable viruses and reverse-transcription polymerase chain reaction/gene probe assays to detect viral ribonucleic acid; grab samples were analyzed for somatic and male-specific coliphages, Bacteroides fragilis, Clostridium perfringens, enterococci, Escherichia coli, total coliforms, total oxidized nitrogen, nitrite, organic nitrogen, total phosphate, ortho-phosphate, calcium, magnesium, sodium, potas-sium, chloride, sulfate, iron, acid-neutralizing capacity, pH, specific conductance, temperature, and dissolved oxygen.One sample tested positive for the presence of the ribonucleic acid of rotavirus through poly-merase chain-reaction analysis. Twenty-nine per-cent of the samples (26 of 90) had bacterial con-tamination. About 7 percent of the samples (6 of 90) were contaminated with either male-specific coliphage

  18. 75 FR 34670 - Approval and Promulgation of Air Quality Implementation Plans; Maryland; Revision to Emission...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-18

    ... Promulgation of Air Quality Implementation Plans; Maryland; Revision to Emission Limitations for R. Paul Smith... revision pertains to revised emission limitations for the R. Paul Smith Power Station located in Washington... R. Paul Smith Power Station in Washington County. This facility had annual nitrogen oxides (NOx...

  19. Talbot-Lau X-ray Deflectometer electron density diagnostic for laser and pulsed power high energy density plasma experiments

    DOE PAGES

    Valdivia, M. P.; Stutman, D.; Stoeckl, C.; ...

    2016-04-21

    Talbot-Lau X-ray Deflectometry has been developed as an electron density diagnostic for High Energy Density plasmas. The technique can deliver x-ray refraction, attenuation, elemental composition, and scatter information from a single Moiré image. An 8 keV Talbot-Lau interferometer was deployed using laser and x-pinch backlighters. Grating survival and electron density mapping was demonstrated for 25-29 J, 8-30 ps laser pulses using copper foil targets. Moire pattern formation and grating survival was also observed using a copper x-pinch driven at 400 kA, ~1 kA/ns. Lastly, these results demonstrate the potential of TXD as an electron density diagnostic for HED plasmas.

  20. Adaptive wavefront sensor based on the Talbot phenomenon.

    PubMed

    Podanchuk, Dmytro V; Goloborodko, Andrey A; Kotov, Myhailo M; Kovalenko, Andrey V; Kurashov, Vitalij N; Dan'ko, Volodymyr P

    2016-04-20

    A new adaptive method of wavefront sensing is proposed and demonstrated. The method is based on the Talbot self-imaging effect, which is observed in an illuminating light beam with strong second-order aberration. Compensation of defocus and astigmatism is achieved with an appropriate choice of size of the rectangular unit cell of the diffraction grating, which is performed iteratively. A liquid-crystal spatial light modulator is used for this purpose. Self-imaging of rectangular grating in the astigmatic light beam is demonstrated experimentally. High-order aberrations are detected with respect to the compensated second-order aberration. The comparative results of wavefront sensing with a Shack-Hartmann sensor and the proposed sensor are adduced.

  1. 77 FR 42179 - Safety Zone; Fireworks Display, Potomac River, Charles County, Newburg, MD

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-18

    ...]30[sec] W, located at Newburg in Charles County, Maryland (NAD 1983). The temporary safety zone will... 1625-AA00 Safety Zone; Fireworks Display, Potomac River, Charles County, Newburg, MD AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY: The Coast Guard will establish a safety zone upon...

  2. Urban and community forests of the Southern Atlantic region: Delaware, District of Columbia, Florida, Georgia, Maryland, North Carolina, South Carolina, Virginia, West Virginia

    Treesearch

    David J. Nowak; Eric J. Greenfield

    2009-01-01

    This report details how land cover and urbanization vary within the states of Delaware, Florida, Georgia, Maryland, North Carolina, South Carolina, Virginia, and West Virginia; and the District of Columbia by community (incorporated and census designated places), county subdivision, and county. Specifically this report provides critical urban and community forestry...

  3. Mobility match study in Prince George's County, Maryland

    DOT National Transportation Integrated Search

    1994-11-01

    The primary focus of this study was to develop non-traditional transit : alternatives to better serve the residents of Prince George's County. The study : identified the transportation needs of the area, evaluated the applicabilty of : traditional an...

  4. Stocking and yield of Virginia pine stands in Prince Georges County, Maryland

    Treesearch

    Thomas W., Jr. Church

    1955-01-01

    Development of yield tables is prerequisite to designing forest-management plans. Yield tables have been prepared for Virginia pine in Maryland, North Carolina, and Pennsylvania. But the differences among yields in these three states are great. These differences are probably due chiefly to site. Therefore it would be desirable to have yield tables based on fairly local...

  5. High-energy x-ray Talbot-Lau radiography of a human knee

    NASA Astrophysics Data System (ADS)

    Horn, F.; Gelse, K.; Jabari, S.; Hauke, C.; Kaeppler, S.; Ludwig, V.; Meyer, P.; Michel, T.; Mohr, J.; Pelzer, G.; Rieger, J.; Riess, C.; Seifert, M.; Anton, G.

    2017-08-01

    We report on a radiographic measurement of an ex vivo human knee using a grating-based phase-contrast imaging setup and a medical x-ray tube at a tube voltage of 70 kV. The measurement has been carried out using a Talbot-Lau setup that is suitable to achieve a high visibility in the energy regime of medical imaging. In a medical reading by an experienced trauma surgeon signatures of chondrocalcinosis in the medial meniscus have been identified more evidently using the dark-field image in comparison to the conventional attenuation image. The analysis has been carried out at various dose levels down to 0.14 mGy measured as air kerma, which is a dose comparable to clinically used radiographic devices. The diagnosis has been confirmed by a histological analysis of the meniscus tissue. In the introduced high-frequency filtered phase-contrast image the anterior and posterior horn of the medial meniscus and the posterior cruciate ligament have also been visible. Furthermore, atherosclerotic plaque is visible in both imaging modalities, attenuation and dark-field, despite the presence of overlaying bone. This measurement, for the first time, proves the feasibility of Talbot-Lau x-ray imaging at high-energy spectra above 40 kVp and reasonable dose levels with regard to spacious and dense objects.

  6. 75 FR 28630 - Maryland; Major Disaster and Related Determinations

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-21

    ..., Howard, Kent, Montgomery, Prince George's, Queen Anne's, Saint Mary's, Talbot, Washington, and Wicomico..., Calvert, Caroline, Carroll, Charles, Dorchester, Frederick, Garrett, Harford, Montgomery, Prince George's...

  7. Potentiometric surface of the upper Patapsco Aquifer in southern Maryland, September 1991

    USGS Publications Warehouse

    Curtin, Stephen E.; Andreasen, D.C.; Mack, Frederick K.

    1993-01-01

    A map showing the potentiometric surface of the upper Patapsco aquifer in the Patapsco Formation of Cretaceous age in southern Maryland during September 1991 was prepared from water levels measured in wells. The potentiometric surface was at least 70 feet above sea level near the northwestern boundary and outcrop area of the aquifer in a topographically high area of Anne Arundel County, and at least 56 feet above sea level in a similar setting in Prince Georges County. From these high areas, the potentiometric surface declined to the south and southeast toward large well fields in the Annapolis and Waldorf areas and at the Chalk Point powerplant.

  8. Talbot-Lau x-ray deflectometer electron density diagnostic for laser and pulsed power high energy density plasma experiments (invited)

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Valdivia, M. P., E-mail: mpvaldivia@pha.jhu.edu; Stutman, D.; Stoeckl, C.

    2016-11-15

    Talbot-Lau X-ray deflectometry (TXD) has been developed as an electron density diagnostic for High Energy Density (HED) plasmas. The technique can deliver x-ray refraction, attenuation, elemental composition, and scatter information from a single Moiré image. An 8 keV Talbot-Lau interferometer was deployed using laser and x-pinch backlighters. Grating survival and electron density mapping were demonstrated for 25–29 J, 8–30 ps laser pulses using copper foil targets. Moiré pattern formation and grating survival were also observed using a copper x-pinch driven at 400 kA, ∼1 kA/ns. These results demonstrate the potential of TXD as an electron density diagnostic for HED plasmas.

  9. Talbot-Lau x-ray deflectometer electron density diagnostic for laser and pulsed power high energy density plasma experiments (invited).

    PubMed

    Valdivia, M P; Stutman, D; Stoeckl, C; Mileham, C; Begishev, I A; Theobald, W; Bromage, J; Regan, S P; Klein, S R; Muñoz-Cordovez, G; Vescovi, M; Valenzuela-Villaseca, V; Veloso, F

    2016-11-01

    Talbot-Lau X-ray deflectometry (TXD) has been developed as an electron density diagnostic for High Energy Density (HED) plasmas. The technique can deliver x-ray refraction, attenuation, elemental composition, and scatter information from a single Moiré image. An 8 keV Talbot-Lau interferometer was deployed using laser and x-pinch backlighters. Grating survival and electron density mapping were demonstrated for 25-29 J, 8-30 ps laser pulses using copper foil targets. Moiré pattern formation and grating survival were also observed using a copper x-pinch driven at 400 kA, ∼1 kA/ns. These results demonstrate the potential of TXD as an electron density diagnostic for HED plasmas.

  10. Sediment contributions from floodplains and legacy sediments to Piedmont streams of Baltimore County, Maryland

    USGS Publications Warehouse

    Donovan, Mitchell; Miller, Andrew; Baker, Matthew; Gellis, Allen C.

    2015-01-01

    Disparity between watershed erosion rates and downstream sediment delivery has remained an important theme in geomorphology for many decades, with the role of floodplains in sediment storage as a common focus. In the Piedmont Province of the eastern USA, upland deforestation and agricultural land use following European settlement led to accumulation of thick packages of overbank sediment in valley bottoms, commonly referred to as legacy deposits. Previous authors have argued that legacy deposits represent a potentially important source of modern sediment loads following remobilization by lateral migration and progressive channel widening. This paper seeks to quantify (1) rates of sediment remobilization from Baltimore County floodplains by channel migration and bank erosion, (2) proportions of streambank sediment derived from legacy deposits, and (3) potential contribution of net streambank erosion and legacy sediments to downstream sediment yield within the Mid-Atlantic Piedmont.We calculated measurable gross erosion and deposition rates within the fluvial corridor along 40 valley segments from 18 watersheds with drainage areas between 0.18 and 155 km2 in Baltimore County, Maryland. We compared stream channel and floodplain morphology from lidar-based digital elevation data collected in 2005 with channel positions recorded on 1:2400 scale topographic maps from 1959–1961 in order to quantify 44–46 years of channel change. Sediment bulk density and particle size distributions were characterized from streambank and channel deposit samples and used for volume to mass conversions and for comparison with other sediment sources.Average annual lateral migration rates ranged from 0.04 to 0.19 m/y, which represented an annual migration of 2.5% (0.9–4.4%) channel width across all study segments, suggesting that channel dimensions may be used as reasonable predictors of bank erosion rates. Gross bank erosion rates varied from 43 to 310 Mg/km/y (median = 114) and

  11. Map showing the potentiometric surface of the Magothy Aquifer in southern Maryland, September 1979

    USGS Publications Warehouse

    Mack, Frederick K.; Wheeler, J.C.; Curtin, Stephen E.

    1980-01-01

    This map is based on measurements made on a network of 77 observation wells in southern Maryland. Highest levels of the potentiometric surface, 63 to 67 feet above sea level, were measured near the outcrop or subcrop of the aquifer in topographically high areas of Anne Arundel and Prince Georges Counties. The surface slopes to the southeast to about 5 feet above sea level along much of the western shore of the Chesapeake Bay. Four separate, distinct, and extensive cones of depression have developed in the surface around the well fields of the city of Annapolis, Broadneck, town of Waldorf, and Chalk Point. Several square miles of each cone are below sea level and in localized areas at Chalk Point and Waldorf, the surface is 40 to 50 feet below sea level. The network of wells was developed as part of the cooperative program between the U.S. Geological Survey, the Maryland Geological Survey, and the Maryland Energy and Coastal Zone Administration. (USGS)

  12. Moiré deflectometry using the Talbot-Lau interferometer as refraction diagnostic for high energy density plasmas at energies below 10 keV.

    PubMed

    Valdivia, M P; Stutman, D; Finkenthal, M

    2014-07-01

    The highly localized density gradients expected in High Energy Density (HED) plasma experiments can be characterized by x-ray phase-contrast imaging in addition to conventional attenuation radiography. Moiré deflectometry using the Talbot-Lau grating interferometer setup is an attractive HED diagnostic due to its high sensitivity to refraction induced phase shifts. We report on the adaptation of such a system for operation in the sub-10 keV range by using a combination of free standing and ultrathin Talbot gratings. This new x-ray energy explored matches well the current x-ray backlighters used for HED experiments, while also enhancing phase effects at lower electron densities. We studied the performance of the high magnification, low energy Talbot-Lau interferometer, for single image phase retrieval using Moiré fringe deflectometry. Our laboratory and simulation studies indicate that such a device is able to retrieve object electron densities from phase shift measurements. Using laboratory x-ray sources from 7 to 15 μm size we obtained accurate simultaneous measurements of refraction and attenuation for both sharp and mild electron density gradients.

  13. 2002 Maryland transportation plan

    DOT National Transportation Integrated Search

    2002-01-01

    The Maryland Transportation Plan (MTP) presents Maryland's policy direction for providing transportation service and infrastructure to Maryland residents. The MTP strategy is stated in a set of goals that together achieve the Department's mission to ...

  14. Map showing the potentiometric surface of the Magothy Aquifer in southern Maryland, August 1980

    USGS Publications Warehouse

    Mack, Frederick K.; Wheeler, Judith C.; Curtin, Stephen E.

    1981-01-01

    This map is based on measurements made in a network of 77 observation wells. Highest levels of the potentiometric surface, 61 to 64 feet above sea level, were near the outcrop or subcrop of the aquifer in topographically high areas of Anne Arundel and northern Prince Georges Counties. The potentiometric surface slopes toward centers of pumpage near Annapolis, in northern Charles County, and southern Prince Georges County. Two separate , distinct, and extensive cones of depression have developed in the surface around the well fields of Waldorf, in northern Charles County, and the Chalk Point power plant, in southern Prince Georges County. The cone of depression in the Annapolis area has coalesced with a more shallow cone that includes the Broadneck Peninsula. The network of wells was developed and is operated and maintained as part of the cooperative program between the U.S. Geological Survey and agencies of the Maryland Department of Natural Resources. (USGS)

  15. A Library Service Center for Suburban Maryland County Library Systems, Anne Arundel, Baltimore, Montgomery, Prince George's; An Establishment Proposal.

    ERIC Educational Resources Information Center

    Duchac, Kenneth F.

    Based on a year of inquiry and consultation, this report of the Suburban Maryland Project confirms the feasibility of cooperative technical service functions for the four public library systems of suburban Maryland. It is recommended that the proposed Library Service Center be assigned the ordering, acquisition, cataloging, preparation for book…

  16. Potentiometric Surface of the Aquia Aquifer in Southern Maryland, September 2009

    USGS Publications Warehouse

    Curtin, Stephen E.; Andreasen, David C.; Staley, Andrew W.

    2010-01-01

    This report presents a map showing the potentiometric surface of the Aquia aquifer in the Aquia Formation of Paleocene age in Southern Maryland during September 2009. The map is based on water-level measurements in 82 wells. The highest measured water level was 48 feet above sea level near the northern boundary and in the outcrop area of the aquifer in the central part of Anne Arundel County. Water levels also were above sea level in Kent County and northern Queen Anne's County. Water levels were below sea level south and east of these areas and in the remainder of the study area. The hydraulic gradient increased southeastward toward a cone of depression around well fields at Lexington Park and Solomons Island. The lowest measured water level was 145 feet below sea level at the center of a cone of depression at Lexington Park. The map also shows well yield in gallons per day for 2008 at wells or well fields.

  17. The second-order differential phase contrast and its retrieval for imaging with x-ray Talbot interferometry.

    PubMed

    Yang, Yi; Tang, Xiangyang

    2012-12-01

    The x-ray differential phase contrast imaging implemented with the Talbot interferometry has recently been reported to be capable of providing tomographic images corresponding to attenuation-contrast, phase-contrast, and dark-field contrast, simultaneously, from a single set of projection data. The authors believe that, along with small-angle x-ray scattering, the second-order phase derivative Φ(") (s)(x) plays a role in the generation of dark-field contrast. In this paper, the authors derive the analytic formulae to characterize the contribution made by the second-order phase derivative to the dark-field contrast (namely, second-order differential phase contrast) and validate them via computer simulation study. By proposing a practical retrieval method, the authors investigate the potential of second-order differential phase contrast imaging for extensive applications. The theoretical derivation starts at assuming that the refractive index decrement of an object can be decomposed into δ = δ(s) + δ(f), where δ(f) corresponds to the object's fine structures and manifests itself in the dark-field contrast via small-angle scattering. Based on the paraxial Fresnel-Kirchhoff theory, the analytic formulae to characterize the contribution made by δ(s), which corresponds to the object's smooth structures, to the dark-field contrast are derived. Through computer simulation with specially designed numerical phantoms, an x-ray differential phase contrast imaging system implemented with the Talbot interferometry is utilized to evaluate and validate the derived formulae. The same imaging system is also utilized to evaluate and verify the capability of the proposed method to retrieve the second-order differential phase contrast for imaging, as well as its robustness over the dimension of detector cell and the number of steps in grating shifting. Both analytic formulae and computer simulations show that, in addition to small-angle scattering, the contrast generated by the

  18. Development of grating-based x-ray Talbot interferometry at the advanced photon source

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Marathe, Shashidhara; Xiao Xianghui; Wojcik, Michael J.

    2012-07-31

    We report on the ongoing effort to develop hard x-ray Talbot interferometry at the Advanced Photon Source (APS), Argonne National Laboratory, USA. We describe the design of the interferometer and preliminary results obtained at 25 keV using a feather and a phantom sample lithographically fabricated of gold. We mention the future developmental goals and applications of this technique as a metrology tool for x-ray optics and beam wavefront characterization.

  19. Geomorphic Responses to Stream Channel Restoration at Minebank Run, Baltimore County, Maryland, 2002--2008

    EPA Science Inventory

    Data collected from 2002 through 2008 were used to assess geomorphic characteristics and geomorphic changes over time in a selected reach of Minebank Run, a small urban watershed near Towson, Maryland, prior to and after its physical restoration in 2004 and 2005. Data collected ...

  20. 2007 Maryland Adolescent Survey

    ERIC Educational Resources Information Center

    Maryland State Department of Education, 2008

    2008-01-01

    Periodically, Maryland's sixth, eighth, tenth, and twelfth graders are surveyed to determine the nature, extent, and trend of alcohol, tobacco, and other drug (ATOD) use among adolescents. The "2007 Maryland Adolescent Survey (MAS)" presents the latest findings regarding ATOD use by Maryland's adolescents and compares State and local…

  1. MGS Online, Maryland Geological Survey's Internet Home

    Science.gov Websites

    Maryland Department of Natural Resources Maryland Geological Survey State of Maryland Home Maryland available through the Maryland Geological Survey. Explore our website! (Dale Shelton of MGS discusses the the Maryland Geological Survey! The Maryland Geological Survey, created in 1896, is a scientific

  2. Moiré deflectometry using the Talbot-Lau interferometer as refraction diagnostic for High Energy Density plasmas at energies below 10 keV

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Valdivia, M. P.; Stutman, D.; Finkenthal, M.

    2014-07-15

    The highly localized density gradients expected in High Energy Density (HED) plasma experiments can be characterized by x-ray phase-contrast imaging in addition to conventional attenuation radiography. Moiré deflectometry using the Talbot-Lau grating interferometer setup is an attractive HED diagnostic due to its high sensitivity to refraction induced phase shifts. We report on the adaptation of such a system for operation in the sub-10 keV range by using a combination of free standing and ultrathin Talbot gratings. This new x-ray energy explored matches well the current x-ray backlighters used for HED experiments, while also enhancing phase effects at lower electron densities.more » We studied the performance of the high magnification, low energy Talbot-Lau interferometer, for single image phase retrieval using Moiré fringe deflectometry. Our laboratory and simulation studies indicate that such a device is able to retrieve object electron densities from phase shift measurements. Using laboratory x-ray sources from 7 to 15 μm size we obtained accurate simultaneous measurements of refraction and attenuation for both sharp and mild electron density gradients.« less

  3. Selected low-flow frequency statistics for continuous-record streamgage locations in Maryland, 2010

    USGS Publications Warehouse

    Doheny, Edward J.; Banks, William S.L.

    2010-01-01

    According to a 2008 report by the Governor's Advisory Committee on the Management and Protection of the State's Water Resources, Maryland's population grew by 35 percent between 1970 and 2000, and is expected to increase by an additional 27 percent between 2000 and 2030. Because domestic water demand generally increases in proportion to population growth, Maryland will be facing increased pressure on water resources over the next 20 years. Water-resources decisions should be based on sound, comprehensive, long-term data and low-flow frequency statistics from all available streamgage locations with unregulated streamflow and adequate record lengths. To provide the Maryland Department of the Environment with tools for making future water-resources decisions, the U.S. Geological Survey initiated a study in October 2009 to compute low-flow frequency statistics for selected streamgage locations in Maryland with 10 or more years of continuous streamflow records. This report presents low-flow frequency statistics for 114 continuous-record streamgage locations in Maryland. The computed statistics presented for each streamgage location include the mean 7-, 14-, and 30-consecutive day minimum daily low-flow dischages for recurrence intervals of 2, 10, and 20 years, and are based on approved streamflow records that include a minimum of 10 complete climatic years of record as of June 2010. Descriptive information for each of these streamgage locations, including the station number, station name, latitude, longitude, county, physiographic province, and drainage area, also is presented. The statistics are planned for incorporation into StreamStats, which is a U.S. Geological Survey Web application for obtaining stream information, and is being used by water-resource managers and decision makers in Maryland to address water-supply planning and management, water-use appropriation and permitting, wastewater and industrial discharge permitting, and setting minimum required

  4. Map showing the potentiometric surface of the Magothy Aquifer in southern Maryland, September 1982

    USGS Publications Warehouse

    Mack, Frederick K.; Wheeler, Judith C.; Curtin, Stephen E.

    1982-01-01

    A map was prepared that shows the potentiometric surface of the Magothy aquifer in southern Maryland in September 1982. The map is based on measurements from a network of 83 observation wells. The highest levels of the potentiometric surface, 57 and 58 feet above sea level, were measured near the outcrop-subcrop of the aquifer in topographically high areas of Anne Arundel and Prince Georges Counties. The potentiometric surface slopes to the southeast to about sea level along much of the western shore of the Chesapeake Bay. Three distinct and extensive cones of depression have developed in the potentiometric surface around the well fields of the Annapolis area, Waldorf area, and Chalk Point. Several square miles of each cone are below sea level, and in some areas at Chalk Point and Waldorf, the cone is more than 50 feet below sea level. The network of wells was developed as part of the cooperative program between the U.S. Geological Survey, the Maryland Geological Survey, and the Maryland Energy Administration. (USGS)

  5. Housing Policy Is School Policy: Economically Integrative Housing Promotes Academic Success in Montgomery County, MD.

    ERIC Educational Resources Information Center

    Schwartz, Heather

    2011-01-01

    Montgomery County, Maryland, operates one of the most acclaimed large public school systems in the United States. Although an increasing share of the population of this suburban school district just outside Washington, District of Columbia, is low income, and the majority of its students belongs to racial minority groups, the county graduates 9 in…

  6. Maryland environmental public health tracking outreach with Spanish-speaking persons living in Baltimore city or county.

    PubMed

    Braggio, John T; Mitchell, Clifford S; Fierro-Luperini, Sonia

    2015-01-01

    The 2000 Pew reports became the impetus for the National Environmental Public Health Tracking (EPHT) Program, but there was no mention that Spanish-speaking persons are at increased risk of exposure to environmental hazards. To undertake successful EPHT outreach on Spanish-speaking persons (Hispanics), it is necessary to better understand their environmental health profile and barriers to health care access. Behavioral Risk Factor Surveillance System (BRFSS) survey questions were administered orally in Spanish to Spanish-speaking study participants. Volunteers were tested at a non-for-profit social service and referral agency in Baltimore. To control for acculturation, only Spanish-speaking persons who had lived in the United States for less than 10 years were selected. Responses to 40 BRFSS survey questions asked during the assessment and completion of 3 intervention activities. This study provides new information about Spanish-speaking persons, most of whom (85.3%) would not have been included in the landline administration of the BRFSS survey. Although 29.9% of the participants reported indoor pesticide use and another 9.2% reported outdoor pesticide use, lifetime (3.5%) and current (1.2%) asthma prevalence was significantly lower than asthma prevalence reported by Maryland Hispanics and all Maryland residents. There were significantly lower cholesterol screening (21.5%) and a significantly higher prevalence of diabetes (12.5%) in Spanish-speaking participants than in Maryland Hispanics and all Maryland residents. Among study participants, only 7.8% had health insurance and 39.9% reported that they could not see a doctor. Of the 3 outreach efforts completed, the most promising one involved asking Spanish-English-speaking health care professionals to distribute Spanish comic books about pesticides exposures and health outcomes in community settings where Spanish-only speakers and children were found. The effectiveness of passive and community-based EPHT

  7. Pulse repetition rate multiplication by Talbot effect in a coaxial fiber

    NASA Astrophysics Data System (ADS)

    Dhingra, Nikhil; Saxena, Geetika Jain; Anand, Jyoti; Sharma, Enakshi K.

    2018-03-01

    We use a coaxial fiber, which is a cylindrical coupled waveguide structure consisting of two concentric cores, the inner rod and an outer ring core as a first order dispersive media to achieve temporal Talbot effect for pulse repetition rate multiplication (PRRM) in high bit rate optical fiber communication. It is observed that for an input Gaussian pulse train with pulse width, 2τ0=1ps at a repetition rate of 40 Gbps (repetition period, T=25ps), an output repetition rate of 640 Gbps can be achieved without significant distortion at a length of 40.92 m.

  8. Towards simultaneous Talbot bands based optical coherence tomography and scanning laser ophthalmoscopy imaging.

    PubMed

    Marques, Manuel J; Bradu, Adrian; Podoleanu, Adrian Gh

    2014-05-01

    We report a Talbot bands-based optical coherence tomography (OCT) system capable of producing longitudinal B-scan OCT images and en-face scanning laser ophthalmoscopy (SLO) images of the human retina in-vivo. The OCT channel employs a broadband optical source and a spectrometer. A gap is created between the sample and reference beams while on their way towards the spectrometer's dispersive element to create Talbot bands. The spatial separation of the two beams facilitates collection by an SLO channel of optical power originating exclusively from the retina, deprived from any contribution from the reference beam. Three different modes of operation are presented, constrained by the minimum integration time of the camera used in the spectrometer and by the galvo-scanners' scanning rate: (i) a simultaneous acquisition mode over the two channels, useful for small size imaging, that conserves the pixel-to-pixel correspondence between them; (ii) a hybrid sequential mode, where the system switches itself between the two regimes and (iii) a sequential "on-demand" mode, where the system can be used in either OCT or SLO regimes for as long as required. The two sequential modes present varying degrees of trade-off between pixel-to-pixel correspondence and independent full control of parameters within each channel. Images of the optic nerve and fovea regions obtained in the simultaneous (i) and in the hybrid sequential mode (ii) are presented.

  9. RADIUM IN MARYLAND COASTAL PLAIN GROUND WATER: AN EMERGING ISSUE RESULTING FROM A MULTI-AGENCY STUDY OF CARCINGENS IN WELL WATER

    EPA Science Inventory

    In 1997, radium-226 plus radium-228 concentrations as high as 66 picocuries per liter were detected in domestic well-water samples from the (Cretaceous) Potomac Group and Magothy Formation in Anne Arundel County, Maryland. Furthermore, radium-224 was found to be a major component...

  10. Single-Grating Talbot Imaging for Wavefront Sensing and X-Ray Metrology

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Grizolli, Walan; Shi, Xianbo; Kolodziej, Tomasz

    2017-01-01

    Single-grating Talbot imaging relies on high-spatial-resolution detectors to perform accurate measurements of X-ray beam wavefronts. The wavefront can be retrieved with a single image, and a typical measurement and data analysis can be performed in few seconds. These qualities make it an ideal tool for synchrotron beamline diagnostics and in-situ metrology. The wavefront measurement can be used both to obtain a phase contrast image of an object and to characterize an X-ray beam. In this work, we explore the concept in two cases: at-wavelength metrology of 2D parabolic beryllium lenses and a wavefront sensor using a diamond crystal beam splitter.

  11. Maryland: La Plata

    Atmospheric Science Data Center

    2014-05-15

    article title:  Tornado Cuts Through La Plata, Maryland     View Larger Image A category F4 tornado tore through La Plata, Maryland on April 28, 2002, killing 5 and ... illustrates the strip of flattened vegetation left by the tornado. The lower image was acquired by MISR's nadir (vertical-viewing) ...

  12. 78 FR 9593 - Approval and Promulgation of Air Quality Implementation Plans; Maryland; Amendments to Maryland's...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-11

    ... Promulgation of Air Quality Implementation Plans; Maryland; Amendments to Maryland's Ambient Air Quality... revisions pertain to adoption through incorporation by reference of the national ambient air quality... order for Maryland's ambient air quality standards to be identical at all times to the NAAQS as well as...

  13. Maryland's Achievements in Public Education, 2011

    ERIC Educational Resources Information Center

    Maryland State Department of Education, 2011

    2011-01-01

    This report presents Maryland's achievements in public education for 2011. Maryland's achievements include: (1) Maryland's public schools again ranked #1 in the nation in Education Week's 2011 Quality Counts annual report; (2) Maryland ranked 1st nationwide for a 3rd year in a row in the percentage of public school students scoring 3 or higher on…

  14. The effects of landscape cover on surface soils in a low density residential neighborhood in Baltimore, Maryland

    Treesearch

    Ian D. Yesilonis; R. V. Pouyat; J. Russell-Anelli; E. Powell

    2016-01-01

    Previous studies at the scale of a city have shown that surface soil nutrients, pH, and soil organic matter (SOM) can vary by land cover, land use, and management. This study was conducted in Baltimore County, Maryland, to quantify the differences in characteristics of soil in a residential neighborhood and adjacent forest patch sampling at a fine scale. The first...

  15. Hydrogeology and soil gas at J-Field, Aberdeen Proving Ground, Maryland

    USGS Publications Warehouse

    Hughes, W.B.

    1993-01-01

    Disposal of chemical warfare agents, munitions, and industrial chemicals in J-Field, Aberdeen Proving Ground, Maryland, has contaminated soil, groundwater and surface water. Seven exploratory borings and 38 observation wells were drilled to define the hydrogeologic framework at J-Field and to determine the type, extent, and movement of contaminants. The geologic units beneath J-Field consist of Coastal Plain sediments of the Cretaceous Patapsco Formation and Pleistocene Talbot Formation. The Patapsco Formation contains several laterally discontinuous aquifers and confining units. The Pleistocene deposits were divided into 3 hydrogeologic units--a surficial aquifer, a confining unit, and a confined aquifer. Water in the surficial aquifer flows laterally from topographically high areas to discharge areas in marshes and streams, and vertically to the underlying confined aquifer. In offshore areas, water flows from the deeper confined aquifers upward toward discharge areas in the Gunpowder River and Chesapeake Bay. Analyses of soil-gas samples showed high relative-flux values of chlorinated solvents, phthalates, and hydrocarbons at the toxic-materials disposal area, white-phosphorus disposal area, and riot-control-agent disposal area. The highest flux values were located downgradient of the toxic materials and white phosphorus disposal areas, indicating that groundwater contaminants are moving from source areas beneath the disposal pits toward discharge points in the marshes and estuaries. Elevated relative-flux values were measured upgradient and downgradient of the riot-control agent disposal area, and possibly result from soil and (or) groundwater contamination.

  16. Stopping time: Henry Fox Talbot and the origins of freeze-frame photography.

    PubMed

    Ramalingam, Chitra

    2008-09-01

    As an image-making tool for scientists studying the transient, instantaneous photography has long been seen as opening up a visual realm previously inaccessible to the inferior testimony of the human eye. But when photographic pioneer Henry Fox Talbot took the first photograph of a moving object by the light of an electric spark in 1851, he was guided by existing visual practices designed to create instantaneous vision in the eye itself. Exploring the background behind the peculiar subject of his experiment - a mechanically spinning disc - reveals a hidden prehistory of spark-illuminated photography: physicists' pre-photographic techniques for stopping time.

  17. Towards simultaneous Talbot bands based optical coherence tomography and scanning laser ophthalmoscopy imaging

    PubMed Central

    Marques, Manuel J.; Bradu, Adrian; Podoleanu, Adrian Gh.

    2014-01-01

    We report a Talbot bands-based optical coherence tomography (OCT) system capable of producing longitudinal B-scan OCT images and en-face scanning laser ophthalmoscopy (SLO) images of the human retina in-vivo. The OCT channel employs a broadband optical source and a spectrometer. A gap is created between the sample and reference beams while on their way towards the spectrometer’s dispersive element to create Talbot bands. The spatial separation of the two beams facilitates collection by an SLO channel of optical power originating exclusively from the retina, deprived from any contribution from the reference beam. Three different modes of operation are presented, constrained by the minimum integration time of the camera used in the spectrometer and by the galvo-scanners’ scanning rate: (i) a simultaneous acquisition mode over the two channels, useful for small size imaging, that conserves the pixel-to-pixel correspondence between them; (ii) a hybrid sequential mode, where the system switches itself between the two regimes and (iii) a sequential “on-demand” mode, where the system can be used in either OCT or SLO regimes for as long as required. The two sequential modes present varying degrees of trade-off between pixel-to-pixel correspondence and independent full control of parameters within each channel. Images of the optic nerve and fovea regions obtained in the simultaneous (i) and in the hybrid sequential mode (ii) are presented. PMID:24877006

  18. Macracanthorhynchus ingens from raccoons in Maryland

    USGS Publications Warehouse

    Herman, Carlton M.

    1955-01-01

    There have been very few published records of the occurrence of the acanthocephalan parasite Macracanthorhynchus ingens (von Linstow, 1897) in North America. Chandler (1942) and Moore (1946) reported 11 o 13 raccoons (Procyon lotor) trapped in Angelina County, Texas, infected with these intestinal parasites. From 1 to 90 worms occurred in these animals. Chandler and Melvin (1951), in a study of parasites collected from mammals in Pennsylvania, reported M. ingens common in its usual host, the raccoon, and also found immature worms believed to belong to this species in skunk, Mephitis nigra; mink, Mustela vision; fox, Urocyon cineraoargenteus; and mole, Parascalops breweri. Van Cleave (1953), in a review of North American Acanthocephala, lists the definitive host as raccoon of the States of Texas and Pennsylvania. He further states: “It is thought that the apparent discontinuous distribution of M. ingens is due to incomplete records of its occurrence in intervening states.” Subsequently, Goldberg (1954) reported 5 specimens of M. ingens in one of 14 skunks from Beltsville, Md.This parasite appears to be fairly common in raccoons from Maryland, as indicated by material from two stations in the State. Of 44 intestinal tracts collected during the winter months, 1943-1946, at the Patuxent Research Refuge, laurel, Maryland, 22 (50%) contained M. ingens in their intestines (Ediger, 1950). Numbers of these parasites per host varied from 1 to 125. Since then, additional raccoons from the Patuxent Research refuge have been found infected with M. ingens.The parasite has also been noted in raccoons collected from the Blackwater National Wildlife refuge and surrounding areas, near Cambridge on the eastern shore of Maryland. One raccoon obtained in May, 1950, contained five specimens of M. ingens. In a series of raccoons obtained by V.T. Harris, during the winter months 1950-1951, 32 (37%) of 86 raccoons examined were infected with M. ingens. Intensity varied from 1 to 44

  19. PROMISE: Maryland's Alliance for Graduate Education and the Professoriate enhances recruitment and retention of underrepresented minority graduate students.

    PubMed

    Tull, Renetta G; Rutledge, Janet C; Carter, Frances D; Warnick, Jordan E

    2012-11-01

    PROMISE: Maryland's Alliance for Graduate Education and the Professoriate (AGEP), sponsored by the National Science Foundation, is a consortium that is designed to increase the numbers of underrepresented minority (URM) PhDs in science, technology, engineering, and mathematics fields who will pursue academic careers. A strength of PROMISE is its alliance infrastructure that connects URM graduate students on different campuses through centralized programming for the three research universities in Maryland: the University of Maryland Baltimore County (the lead institution in the alliance), the University of Maryland College Park, and the University of Maryland Baltimore (UMB). PROMISE initiatives cover graduate student recruitment, retention, community building, PhD completion, and transition to careers.Although it is not a fellowship, PROMISE offers professional development and skill-building programs that provide academic and personal support for URM students on all three campuses. PROMISE on UMB's campus includes the School of Medicine, which sponsors tricampus programs that promote health and wellness to accompany traditional professional development programs. PROMISE uniquely and atypically includes a medical school within its alliance. The PROMISE programs serve as interventions that reduce isolation and facilitate degree completion among diverse students on each campus. This article describes details of the PROMISE AGEP and presents suggestions for replicating professional development programs for URMs in biomedical, MD/master's, and MD/PhD programs on other campuses.

  20. Potentiometric Surface of the Aquia Aquifer in Southern Maryland, September 2001

    USGS Publications Warehouse

    Curtin, Stephen E.; Andreasen, David C.; Wheeler, Judith C.

    2002-01-01

    This report presents a map showing the potentiometric surface of the Aquia aquifer in the Aquia Formation of Paleocene age in Southern Maryland during September 2001. The map is based on water-level measurements in 76 wells. The potentiometric surface was highest at 40 feet above sea level near the northern boundary and outcrop area of the aquifer in the central part of Anne Arundel County, and was below sea level in the remainder of the study area. The hydraulic gradient was directed southeastward toward an extensive cone of depression around well fields at Lexington Park and Solomons Island. A cone of depression formed in northern Calvert County due to pumpage at Chesapeake Beach and North Beach. The water level has declined to 44 feet below sea level in this area. The lowest measurement was 160 feet below sea level at the center of a cone of depression at Lexington Park.

  1. Potentiometric surface of the upper Patapsco Aquifer in southern Maryland, September 1994

    USGS Publications Warehouse

    Curtin, Stephen E.; Mack, Frederick K.; Andreasen, David C.

    1995-01-01

    A map showing the potentiometric surface of the upper Patapsco aquifer in the Patapsco Formation of Cretaceous age in southern Maryland during September 1994 was prepared from water levels measured in 43 wells. The potentiometric surface was at least 70 feet above sea level near the northwestern boundary and outcrop area of the aquifer in a topographically high area of Anne Arundel County, and nearly 60 feet above sea level in a similar setting in Prince Georges County. From these high areas, the potentiometric surface declined to the south and southeast toward large well fields in the Annapolis and Waldorf areas and at the Chalk Point powerplant. Ground-water levels reached nearly 30 feet below sea level in the Annapolis area, nearly 110 feet below sea level southwest of Waldorf, and more than 25 feet below sea level at the Chalk Point powerplant.

  2. Potentiometric Surface of the Upper Patapsco Aquifer in Southern Maryland, September 1995

    USGS Publications Warehouse

    Curtin, Stephen E.; Andreasen, David C.; Mack, Frederick K.

    1996-01-01

    A map showing the potentiometric surface of the upper Patapsco aquifer in the Patapsco Formation of Cretaceous age in southern Maryland during September 1995 was prepared from water-level measurements in 42 wells. The potentiometric surface was nearly 120 feet above sea level near the northwestern boundary and outcrop area of the aquifer in topographically high areas of Anne Arundel County, and 55 feet above sea level in a similar setting in Prince Georges County. From these high areas, the potentiometic surface declined to the south and southeast toward large well fields in the Annapolis and Waldorf areas and at the Chalk Point powerplant. Ground-water levels reached nearly 30 feet below sea level in the Annapolis area, 113 feet below sea level southwest of Waldorf, and more than 30 feet below sea level at the Chalk Point powerplant.

  3. Review of Procurement Practices in the Montgomery County Public Schools. Final Report.

    ERIC Educational Resources Information Center

    Touche Ross and Co., Washington, DC.

    Following a management summary and introduction, chapters 3 and 4 of this report present findings and recommendations related to the Montgomery County, Maryland, Public Schools process of procuring supplies and equipment (food supplies, fuel oil, warehouse supplies, and maintenance parts) and contractual services (data processing maintenance,…

  4. La Materia. Nivel II. Basado en el curso de estudios de Ciencia de Montgomery County Public Schools. (Matter. Level II. Based on the Montgomery County Public Schools Science Studies Program).

    ERIC Educational Resources Information Center

    Gerstman, M. Linda

    This curriculum unit is for use in an elementary school foreign language immersion program in Montgomery County, Maryland. The unit is geared toward the second grade science classroom. It includes instructional and performance objectives, vocabulary lists, optional language structure sections, illustrations, activities, evaluation suggestions, and…

  5. Evaluation of High School Plus (HS+) in Montgomery County Public Schools

    ERIC Educational Resources Information Center

    Modarresi, Shahpar; Wade, Julie; Zhao, Huafang; Wolanin, Natalie

    2014-01-01

    The MCPS Office of Shared Accountability conducted an evaluation of the "High School Plus" (HS+) program implemented in Montgomery County (Maryland) Public Schools (MCPS). HS+ is one of the intervention programs offered by MCPS to provide additional ways of earning high school credits for students who have failed courses required for…

  6. Mapping the Future Today: The Community College of Baltimore County Geospatial Applications Program

    ERIC Educational Resources Information Center

    Jeffrey, Scott; Alvarez, Jaime

    2010-01-01

    The Geospatial Applications Program at the Community College of Baltimore County (CCBC), located five miles west of downtown Baltimore, Maryland, provides comprehensive instruction in geographic information systems (GIS), remote sensing and global positioning systems (GPS). Geospatial techniques, which include computer-based mapping and remote…

  7. An Evaluation of a Wide Range of Job-Generating Activities for Rural Counties.

    ERIC Educational Resources Information Center

    Finsterbusch, Kurt; And Others

    1992-01-01

    Examines the job-generating activities in 15 rural counties in Maryland through 175 interviews and field work. Those ranking high included industrial park development, economic development activities, and tourism. Special financial arrangements for relocating and new businesses also received high marks. Includes 48 references. (JOW)

  8. The difference between the potentiometric surfaces of the Magothy Aquifer of September 1986 and September 1988 in southern Maryland

    USGS Publications Warehouse

    Mack, Frederick K.; Andreasen, David C.; Curtin, Stephen E.; Wheeler, Judith C.

    1990-01-01

    A map was prepared that shows the net change in the potentiometric surface of the Magothy aquifer (in the Cretaceous Magothy Formation) in southern Maryland from the fall of 1986 to the fall of 1988. The map, based on water level measurements from 79 observation wells, shows that during the 2 year period the potentiometric surface declined less than 5 ft in most of the northern part of the study area and more than 10 ft in a 4-sq-mi area in northern Charles County. Net water-level rises of as much as 2 ft were measured in central Charles County. (USGS)

  9. Maryland Cleaning & Abatement Services Corp. Information Sheet

    EPA Pesticide Factsheets

    Maryland Cleaning & Abatement Services Corp. (the Company) is located in Baltimore, Maryland. The settlement involves renovation activities conducted at property constructed prior to 1978, located in Baltimore, Maryland.

  10. Potentiometric Surface of the Aquia Aquifer in Southern Maryland, September 2002

    USGS Publications Warehouse

    Curtin, Stephen E.; Andreasen, David C.; Wheeler, Judith C.

    2003-01-01

    This report presents a map showing the potentiometric surface of the Aquia aquifer in the Aquia Formation of Paleocene age in Southern Maryland during September 2002. The map is based on water-level measurements in 94 wells. The highest measured water level was 38 feet above sea level near the northern boundary and outcrop area of the aquifer in the central part of Anne Arundel County, and was below sea level just south of this area and in the remainder of the study area. The hydraulic gradient increased southeastward toward an extensive cone of depression around well fields at Lexington Park and Solomons Island. Another cone of depression occurred in northern Calvert County due to pumpage at and near Chesapeake Beach and North Beach. The water level measured in this area has declined to 55 feet below sea level. The lowest water level measured was 169 feet below sea level at the center of a cone of depression at Lexington Park.

  11. Potentiometric surface of the Aquia Aquifer in southern Maryland, September 2003

    USGS Publications Warehouse

    Curtin, Stephen E.; Andreason, David C.; Wheeler, Judith C.

    2005-01-01

    This report presents a map showing the potentiometric surface of the Aquia aquifer in the Aquia Formation of Paleocene age in Southern Maryland during September 2003. The map is based on water-level measurements in 91 wells. The highest measured water level was 40 feet above sea level near the northern boundary and outcrop area of the aquifer in the central part of Anne Arundel County, and was below sea level just south of this area and in the remainder of the study area. The hydraulic gradient increased southeastward toward an extensive cone of depression around well fields at Lexington Park and Solomons Island. Another cone of depression occurred in northern Calvert County due to pumpage at and near North Beach and Chesapeake Beach. The water level measured in this area has declined to 48 feet below sea level. The lowest water level measured was 156 feet below sea level at the center of a cone of depression at Lexington Park.

  12. Seres Vivos. Nivel I. Basado en el curso de estudios de Ciencia de Montgomery County Public Schools. (Living Beings. Level 1. Based on the Montgomery County Public Schools Science Studies Program).

    ERIC Educational Resources Information Center

    Senger, Graciela

    This curriculum unit, developed by the Montgomery County Public Schools, Maryland, was designed for use in the elementary level foreign language immersion program. It is geared toward the first grade science classroom. The unit includes instructional and performance objectives, necessary vocabulary lists, optional language structure sections,…

  13. Sediment accumulation and water volume in Loch Raven Reservoir, Baltimore County, Maryland

    USGS Publications Warehouse

    Banks, William S.L.; LaMotte, Andrew E.

    1999-01-01

    Baltimore City and its metropolitan area are supplied with water from three reservoirs, Liberty Reservoir, Prettyboy Reservoir, and Loch Raven Reservoir. Prettyboy and Loch Raven Reservoirs are located on the Gunpowder Falls (figure 1). The many uses of the reservoir system necessitate coordination and communication among resource managers. The 1996 Amendment to the Safe Drinking Water Act require States to complete source-water assessments for public drinking-water supplies. As part of an ongoing effort to provide safe drinking water and as a direct result of these laws, the City of Baltimore and the Maryland Department of the Environment (MDE), in cooperation with other State and local agencies, are studying the Gunpowder Falls Basin and its role as a source of water supply to the Baltimore area. As a part of this study, the U.S. Geological Survey (USGS), in cooperation with the Maryland Geological Survey (MGS), with funding provided by the City of Baltimore and MDE, is examining sediment accumulation in Loch Raven Reservoir. The Baltimore City Department of Public Works periodically determines the amount of water that can be stored in its reservoirs. To make this determination, field crews measure the water depth along predetermined transects or ranges. These transects provide consistent locations where water depth, or bathymetric, measurements can be made. Range surveys are repeated to provide a record of the change in storage capacity due to sediment accumulation over time. Previous bathymetric surveys of Loch Raven Reservoir were performed in 1943, 1961, 1972, and 1985. Errors in data-collection and analysis methods have been assessed and documented (Baltimore City Department of Public Works, 1989). Few comparisons can be made among survey results because of changing data-collection techniques and analysis methods.

  14. Impact of Maryland's 2011 alcohol sales tax increase on alcoholic beverage sales.

    PubMed

    Esser, Marissa B; Waters, Hugh; Smart, Mieka; Jernigan, David H

    2016-07-01

    Increasing alcohol taxes has proven effective in reducing alcohol consumption, but the effects of alcohol sales taxes on sales of specific alcoholic beverages have received little research attention. Data on sales are generally less subject to reporting biases than self-reported patterns of alcohol consumption. We aimed to assess the effects of Maryland's July 1, 2011 three percentage point increase in the alcohol sales tax (6-9%) on beverage-specific and total alcohol sales. Using county-level data on Maryland's monthly alcohol sales in gallons for 2010-2012, by beverage type, multilevel mixed effects multiple linear regression models estimated the effects of the tax increase on alcohol sales. We controlled for seasonality, county characteristics, and national unemployment rates in the main analyses. In the 18 months after the tax increase, average per capita sales of spirits were 5.1% lower (p < 0.001), beer sales were 3.2% lower (p < 0.001), and wine sales were 2.5% lower (p < 0.01) relative to what would have been expected from sales trends in the 18 months prior to the tax increase. Overall, the alcohol sales tax increase was associated with a 3.8% decline in total alcohol sold relative to what would have been expected based on sales in the prior 18 months (p < 0.001). The findings suggest that increased alcohol sales taxes may be as effective as excise taxes in reducing alcohol consumption and related problems. Sales taxes also have the added advantages of rising with inflation and taxing the highest priced beverages most heavily.

  15. Databook: Maryland Community Colleges.

    ERIC Educational Resources Information Center

    Maryland State Board for Community Colleges, Annapolis.

    Designed to provide information about the current status and future direction of Maryland's community college system, this report offers a summary and overview of all aspects of community college functioning in the state. Section I provides an organizational chart of higher education in Maryland; and data on undergraduate credit enrollments, and…

  16. Maryland and Your World.

    ERIC Educational Resources Information Center

    Holiday-Crews, Margaret

    The Maryland State Department of Education (MSDE) launched the "Maryland and Your World" project in 1983. The purpose of this project is to assist local school systems in implementing guidelines established by MSDE's curricular framework for the social studies. Goal four of this framework focuses on the ideas, institutions, and processes…

  17. Map showing the potentiometric surface of the Magothy Aquifer in southern Maryland, September 1981

    USGS Publications Warehouse

    Mack, F.K.; Wheeler, J.C.; Curtin, S.E.

    1982-01-01

    The map is based on measurements from a network of 83 observation wells cased to the Magothy aquifer. Highest levels of the potentiometric surface, 59 to 60 feet above sea level, were measured near the outcrop-subcrop of the aquifer in topographically high areas of Anne Arundel and Prince Georges Counties. The surface slopes to the southeast to above sea level along much of the western shore of Chesapeake Bay. Three separate, distinct, and extensive cones of depression have developed in the potentiometric surface around the well fields of the city of Annapolis-Broadneck Peninsula area, town of Waldorf, and Chalk Point. Several square miles of each cone are below sea level, and, in some areas at Chalk Point and Waldorf, the cone is 40 to 50 feet below sea level. The network of wells was developed as part of the cooperative program between the U.S. Geological Survey, the Maryland Geological Survey, and the Maryland Energy and Coastal Zone Administration. (USGS)

  18. Discipline Monitoring System: A School Self-Study Project for Montgomery County Public Schools.

    ERIC Educational Resources Information Center

    Richardson, William M.; Splaine, Pam

    The Discipline Monitoring System (DMS) is a computer-assisted model allowing individual secondary schools to analyze their disciplinary actions. The Montgomery County Public Schools (Maryland) adopted this model to manipulate the following data: who is suspended, who is referred, who makes referrals, characteristics of these persons, and events…

  19. Geologic Map of the Frederick 30' x 60' Quadrangle, Maryland, Virginia, and West Virginia

    USGS Publications Warehouse

    Southworth, Scott; Brezinski, David K.; Drake, Avery Ala; Burton, William C.; Orndorff, Randall C.; Froelich, Albert J.; Reddy, James E.; Denenny, Danielle; Daniels, David L.

    2007-01-01

    The Frederick 30? ? 60? quadrangle lies within the Potomac River watershed of the Chesapeake Bay drainage basin. The map area covers parts of Montgomery, Howard, Carroll, Frederick, and Washington Counties in Maryland; Loudoun, Clarke, and Fairfax Counties in Virginia; and Jefferson and Berkeley Counties in West Virginia. Many geologic features (such as faults and folds) are named for geographic features that may or may not be shown on the 1:100,000-scale base map. The geology of the Frederick 30? ? 60? quadrangle, Maryland, Virginia, and West Virginia, was first mapped on the 32 1:24,000-scale 7.5-minute quadrangle base maps between 1989 and 1994. The geologic data were compiled manually at 1:100,000 scale in 1997 and were digitized between 1998 and 1999. The geologic map and database may be used to support activities such as land-use planning, soil mapping, groundwater availability and quality studies, identifying aggregate resources, and conducting engineering and environmental studies. The map area covers distinct geologic provinces and sections of the central Appalachian region that are defined by unique bedrock and resulting landforms. From west to east, the provinces include the Great Valley section of the Valley and Ridge province, the Blue Ridge province, and the Piedmont province; in the extreme southeastern corner, a small part of the Coastal Plain province is present. The Piedmont province is divided into several sections; from west to east, hey are the Frederick Valley synclinorium, the Culpeper and Gettysburg basins, the Sugarloaf Mountain anticlinorium, the Westminster terrane, and the Potomac terrane. The geology of the Frederick quadrangle is discussed by geologic province and sections; the geologic units within each province are discussed from oldest to youngest. Where applicable, the discussion includes information on tectonic origins. For more information concerning the report, please contact the author.

  20. Developing mesoscopic models for the before and after study of the inter-county connector : phase-one.

    DOT National Transportation Integrated Search

    2013-03-01

    This study developed a mesoscopic model for the before and after study of MD 200, the Inter-County Connector. It is in line with : recent efforts by the Maryland State Highway Administration (SHA) in developing effective modeling tools for traffic an...

  1. Combining Gabor and Talbot bands techniques to enhance the sensitivity with depth in Fourier domain optical coherence tomography

    NASA Astrophysics Data System (ADS)

    Bradu, Adrian; Marques, Manuel J.; Bouchal, Petr; Podoleanu, Adrian Gh.

    2013-03-01

    The purpose of this study was to show how to favorably mix two e_ects to improve the sensitivity with depth in Fourier domain optical coherence tomography (OCT): Talbot bands (TB) and Gabor-based fusion (GF) technique. TB operation is achieved by directing the two beams, from the object arm and from the reference arm in the OCT interferometer, along parallel separate paths towards the spectrometer. By changing the lateral gap between the two beams in their path towards the spectrometer, the position for the maximum sensitivity versus the optical path difference in the interferometer is adjusted. For five values of the focus position, the gap between the two beams is readjusted to reach maximum sensitivity. Then, similar to the procedure employed in the GF technique, a composite image is formed by edging together the parts of the five images that exhibited maximum brightness. The combined procedure, TB/GF is examined for four different values of the beam diameters of the two beams. Also we demonstrate volumetric FD-OCT images with mirror term attenuation and sensitivity profile shifted towards higher OPD values by applying a Talbot bands configuration.

  2. Research and investigation of geology, mineral, and water resources of Maryland

    NASA Technical Reports Server (NTRS)

    Weaver, K. N. (Principal Investigator); Crowley, W. P.; Edwards, J., Jr.; Kerhin, R. T.; Slaughter, T. H.

    1974-01-01

    The authors have identified the following significant results. Field work in Baltimore County revealed that the signature returns of serpentinitic and nonserpentinitic rocks correlates with the vegetation cover and land use pattern. In Maryland Piedmont, bedrock lithology and structure are enhanced only to the extent that land use is geologically dictated. Two prominent sets of linear features are detected on ERTS-1 imagery at N 45 deg E and N 20 deg E. Beaches of Chesapeake Bay are classified as broad and narrow beaches based on the width of the backshore zone. It is shown by comparing historical shorelines of Ocean City, from the inlet to the Maryland-Delaware line that reversal zones of erosion and accretion occur at different locations for different periods. High reflectance levels (high marsh-high topographic areas) for the lower Eastern Shore are found to be distributed as two distinct trending linear ridge systems. Observations of MSS band 5 dated 9 April 1974 exhibited an unique sedimentation pattern for Chesapeake Bay. Following a 1.5 inch rainfall, heavy concentration of suspended sediments is observed on the imagery, particularly in the area of the turbidity maximum.

  3. Ecological survey of M-Field, Edgewood Area Aberdeen Proving Ground, Maryland

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Downs, J.L.; Eberhardt, L.E.; Fitzner, R.E.

    1991-12-01

    An ecological survey was conducted on M-Field, at the Edgewood Area, Aberdeen Proving Ground, Maryland. M-Field is used routinely to test army smokes and obscurants, including brass flakes, carbon fibers, and fog oils. The field has been used for testing purposes for the past 40 years, but little documented history is available. Under current environmental regulations, the test field must be assessed periodically to document the presence or potential use of the area by threatened and endangered species. The M-Field area is approximately 370 acres and is part of the US Army's Edgewood Area at Aberdeen Proving Ground in Harfordmore » County, Maryland. The grass-covered field is primarily lowlands with elevations from about 1.0 to 8 m above sea level, and several buildings and structures are present on the field. The ecological assessment of M-Field was conducted in three stages, beginning with a preliminary site visit in May to assess sampling requirements. Two field site visits were made June 3--7, and August 12--15, 1991, to identify the biota existing on the site. Data were gathered on vegetation, small mammals, invertebrates, birds, large mammals, amphibians, and reptiles.« less

  4. Ecological survey of M-Field, Edgewood Area Aberdeen Proving Ground, Maryland

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Downs, J.L.; Eberhardt, L.E.; Fitzner, R.E.

    1991-12-01

    An ecological survey was conducted on M-Field, at the Edgewood Area, Aberdeen Proving Ground, Maryland. M-Field is used routinely to test army smokes and obscurants, including brass flakes, carbon fibers, and fog oils. The field has been used for testing purposes for the past 40 years, but little documented history is available. Under current environmental regulations, the test field must be assessed periodically to document the presence or potential use of the area by threatened and endangered species. The M-Field area is approximately 370 acres and is part of the US Army`s Edgewood Area at Aberdeen Proving Ground in Harfordmore » County, Maryland. The grass-covered field is primarily lowlands with elevations from about 1.0 to 8 m above sea level, and several buildings and structures are present on the field. The ecological assessment of M-Field was conducted in three stages, beginning with a preliminary site visit in May to assess sampling requirements. Two field site visits were made June 3--7, and August 12--15, 1991, to identify the biota existing on the site. Data were gathered on vegetation, small mammals, invertebrates, birds, large mammals, amphibians, and reptiles.« less

  5. X-ray phase scanning setup for non-destructive testing using Talbot-Lau interferometer

    NASA Astrophysics Data System (ADS)

    Bachche, S.; Nonoguchi, M.; Kato, K.; Kageyama, M.; Koike, T.; Kuribayashi, M.; Momose, A.

    2016-09-01

    X-ray grating interferometry has a great potential for X-ray phase imaging over conventional X-ray absorption imaging which does not provide significant contrast for weakly absorbing objects and soft biological tissues. X-ray Talbot and Talbot-Lau interferometers which are composed of transmission gratings and measure the differential X-ray phase shifts have gained popularity because they operate with polychromatic beams. In X-ray radiography, especially for nondestructive testing in industrial applications, the feasibility of continuous sample scanning is not yet completely revealed. A scanning setup is frequently advantageous when compared to a direct 2D static image acquisition in terms of field of view, exposure time, illuminating radiation, etc. This paper demonstrates an efficient scanning setup for grating-based Xray phase imaging using laboratory-based X-ray source. An apparatus consisting of an X-ray source that emits X-rays vertically, optical gratings and a photon-counting detector was used with which continuously moving objects across the field of view as that of conveyor belt system can be imaged. The imaging performance of phase scanner was tested by scanning a long continuous moving sample at a speed of 5 mm/s and absorption, differential-phase and visibility images were generated by processing non-uniform moire movie with our specially designed phase measurement algorithm. A brief discussion on the feasibility of phase scanner with scanning setup approach including X-ray phase imaging performance is reported. The successful results suggest a breakthrough for scanning objects those are moving continuously on conveyor belt system non-destructively using the scheme of X-ray phase imaging.

  6. Automated collimation testing by determining the statistical correlation coefficient of Talbot self-images.

    PubMed

    Rana, Santosh; Dhanotia, Jitendra; Bhatia, Vimal; Prakash, Shashi

    2018-04-01

    In this paper, we propose a simple, fast, and accurate technique for detection of collimation position of an optical beam using the self-imaging phenomenon and correlation analysis. Herrera-Fernandez et al. [J. Opt.18, 075608 (2016)JOOPDB0150-536X10.1088/2040-8978/18/7/075608] proposed an experimental arrangement for collimation testing by comparing the period of two different self-images produced by a single diffraction grating. Following their approach, we propose a testing procedure based on correlation coefficient (CC) for efficient detection of variation in the size and fringe width of the Talbot self-images and thereby the collimation position. When the beam is collimated, the physical properties of the self-images of the grating, such as its size and fringe width, do not vary from one Talbot plane to the other and are identical; the CC is maximum in such a situation. For the de-collimated position, the size and fringe width of the self-images vary, and correspondingly the CC decreases. Hence, the magnitude of CC is a measure of degree of collimation. Using the method, we could set the collimation position to a resolution of 1 μm, which relates to ±0.25   μ    radians in terms of collimation angle (for testing a collimating lens of diameter 46 mm and focal length 300 mm). In contrast to most collimation techniques reported to date, the proposed technique does not require a translation/rotation of the grating, use of complicated phase evaluation algorithms, or an intricate method for determination of period of the grating or its self-images. The technique is fully automated and provides high resolution and precision.

  7. ACT Participation and Performance for Montgomery County Public Schools Students [2013]. Memorandum

    ERIC Educational Resources Information Center

    Sanderson, Geoffrey T.

    2013-01-01

    The Montgomery County Public Schools (MCPS) Class of 2013 consistently outperformed graduates across Maryland and the nation on all sections of the ACT, according to the ACT, Inc. annual report released Wednesday, August 21, 2013. In 2013, 29 percent of MCPS graduates took the ACT exam. According to the ACT, Inc. report, ACT participation among…

  8. Wage and Benefits Survey of Child Care Center Staff in Montgomery County.

    ERIC Educational Resources Information Center

    Montgomery County Dept. of Family Resources, Rockville, MD. Div. of Program Development and Planning.

    In this study of child care center wages, benefits, and working conditions, questionnaires were completed by directors and senior staff at 129 centers in Montgomery County, Maryland. Survey findings on staff education and experience indicated that 34 percent of staff had a bachelor's degree or higher. A typical staff member had 5.5 years of…

  9. Diffraction-Induced Bidimensional Talbot Self-Imaging with Full Independent Period Control

    NASA Astrophysics Data System (ADS)

    Guillet de Chatellus, Hugues; Romero Cortés, Luis; Deville, Antonin; Seghilani, Mohamed; Azaña, José

    2017-03-01

    We predict, formulate, and observe experimentally a generalized version of the Talbot effect that allows one to create diffraction-induced self-images of a periodic two-dimensional (2D) waveform with arbitrary control of the image spatial periods. Through the proposed scheme, the periods of the output self-image are multiples of the input ones by any desired integer or fractional factor, and they can be controlled independently across each of the two wave dimensions. The concept involves conditioning the phase profile of the input periodic wave before free-space diffraction. The wave energy is fundamentally preserved through the self-imaging process, enabling, for instance, the possibility of the passive amplification of the periodic patterns in the wave by a purely diffractive effect, without the use of any active gain.

  10. Diffraction-Induced Bidimensional Talbot Self-Imaging with Full Independent Period Control.

    PubMed

    Guillet de Chatellus, Hugues; Romero Cortés, Luis; Deville, Antonin; Seghilani, Mohamed; Azaña, José

    2017-03-31

    We predict, formulate, and observe experimentally a generalized version of the Talbot effect that allows one to create diffraction-induced self-images of a periodic two-dimensional (2D) waveform with arbitrary control of the image spatial periods. Through the proposed scheme, the periods of the output self-image are multiples of the input ones by any desired integer or fractional factor, and they can be controlled independently across each of the two wave dimensions. The concept involves conditioning the phase profile of the input periodic wave before free-space diffraction. The wave energy is fundamentally preserved through the self-imaging process, enabling, for instance, the possibility of the passive amplification of the periodic patterns in the wave by a purely diffractive effect, without the use of any active gain.

  11. Forests of Maryland, 2016

    Treesearch

    Tonya W. Lister

    2017-01-01

    This publication provides an overview of forest resources in Maryland based on inventories conducted by the U.S. Forest Service, Forest Inventory and Analysis (FIA) program of the Northern Research Station. From 2004-2013, FIA employed an annual inventory measuring data on 20 percent of all sample plots each year in Maryland. Beginning in 2014, FIA is on a 7-year cycle...

  12. Forests of Maryland, 2015

    Treesearch

    Tonya Lister; Richard Widmann

    2016-01-01

    This publication provides an overview of forest resources in Maryland based on inventories conducted by the U.S. Forest Service, Forest Inventory and Analysis (FIA) program of the Northern Research Station. From 2004-2013, FIA employed an annual inventory, measuring 20 percent of all sample plots each year in Maryland. Beginning in 2014, FIA is on a 7-year cycle,...

  13. Forests of Maryland, 2014

    Treesearch

    T.W. Lister; R.H. Widmann

    2015-01-01

    This publication provides an overview of forest resources in Maryland based on inventories conducted by the U.S. Forest Service, Forest Inventory and Analysis (FIA) program of the Northern Research Station. From 2004-2013, FIA employed an annual inventory measuring data on 20 percent of all sample plots each year in Maryland. Beginning in 2014, FIA is on a 7-year cycle...

  14. Maryland School Performance Program. Outcomes, Standards, & High-Stakes Accountability: Perspectives from Maryland and Kentucky.

    ERIC Educational Resources Information Center

    Haigh, John A.

    This document presents a collection of materials on school performance in Maryland, especially as demonstrated in the Maryland School Performance Assessment Program (MSPAP) and the Independence Mastery Assessment Program (IMAP) for some special needs students. The MSPAP is a testing program administered to third, fifth, and eighth grade students…

  15. Watershed Characteristics and Pre-Restoration Surface-Water Hydrology of Minebank Run, Baltimore County, Maryland, Water Years 2002-04

    USGS Publications Warehouse

    Doheny, Edward J.; Starsoneck, Roger J.; Striz, Elise A.; Mayer, Paul M.

    2006-01-01

    Stream restoration efforts have been ongoing in Maryland since the early 1990s. Physical stream restoration often involves replacement of lost sediments to elevate degraded streambeds, re-establishment of riffle-pool sequences along the channel profile, planting vegetation in riparian zones, and re-constructing channel banks, point bars, flood plains, and stream-meanders. The primary goal of many restoration efforts is to re-establish geomorphic stability of the stream channel and reduce erosive energy from urban runoff. Monitoring streams prior to and after restoration could help quantify other possible benefits of stream restoration, such as improved water quality and biota. This report presents general watershed characteristics associated with the Minebank Run watershed; a small, urban watershed in the south-central section of Baltimore County, Maryland that was physically restored in phases during 1999, 2004, and 2005. The physiography, geology, hydrology, land use, soils, and pre-restoration geomorphic setting of the unrestored stream channel are discussed. The report describes a reach of Minebank Run that was selected for the purpose of collecting several types of environmental data prior to restoration, including continuous-record and partial-record stage and streamflow data, precipitation, and ground-water levels. Examples of surface-water data that were collected in and near the study reach during water years 2002 through 2004, including continuous-record streamflow, partial-record stage and discharge, and precipitation, are described. These data were used in analyses of several characteristics of surface-water hydrology in the watershed, including (1) rainfall totals, storm duration, and intensity, (2) instantaneous peak discharge and daily mean discharge, (3) stage-discharge ratings, (4) hydraulic-geometry relations, (5) water-surface slope, (6) time of concentration, (7) flood frequency, (8) flood volume, and (9) rainfall-runoff relations. Several

  16. 78 FR 9650 - Approval and Promulgation of Air Quality Implementation Plans; Maryland; Amendments to Maryland's...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-11

    ... Promulgation of Air Quality Implementation Plans; Maryland; Amendments to Maryland's Ambient Air Quality... adopting through incorporation by reference the national ambient air quality standards (NAAQS). In the... incorporation by reference of the national ambient air quality standards (NAAQS), please see the information...

  17. Maryland Defense Force Cavalry Troop A

    DTIC Science & Technology

    2007-01-01

    forming a horse formation and will emulate what has been done in the State of Maryland. The MDDF’s current Headquarters is located on the Pikesville...Military Reservation, a facility initially constructed to house a troop of the Maryland National Guard’s (MDNG’s) horse cavalry. TROOP A, MARYLAND...designed by then Second Lieutenant George S. Patton, Jr., of the 15 US Cavalry. A very fine reproduction was found, along withth the requisite hanger to

  18. Leading for Equity: The Pursuit of Excellence in the Montgomery County Public Schools

    ERIC Educational Resources Information Center

    Childress, Stacey M.; Doyle, Denis P.; Thomas, David A.

    2009-01-01

    "Leading for Equity" tells the compelling story of the Montgomery County (Maryland) Public Schools and its transformation--in less than a decade--into a system committed to breaking the links between race and class and academic achievement. In chapters organized around six core themes, the authors lay out the essential elements of MCPS's…

  19. Complex dark-field contrast and its retrieval in x-ray phase contrast imaging implemented with Talbot interferometry.

    PubMed

    Yang, Yi; Tang, Xiangyang

    2014-10-01

    Under the existing theoretical framework of x-ray phase contrast imaging methods implemented with Talbot interferometry, the dark-field contrast refers to the reduction in interference fringe visibility due to small-angle x-ray scattering of the subpixel microstructures of an object to be imaged. This study investigates how an object's subpixel microstructures can also affect the phase of the intensity oscillations. Instead of assuming that the object's subpixel microstructures distribute in space randomly, the authors' theoretical derivation starts by assuming that an object's attenuation projection and phase shift vary at a characteristic size that is not smaller than the period of analyzer grating G₂ and a characteristic length dc. Based on the paraxial Fresnel-Kirchhoff theory, the analytic formulae to characterize the zeroth- and first-order Fourier coefficients of the x-ray irradiance recorded at each detector cell are derived. Then the concept of complex dark-field contrast is introduced to quantify the influence of the object's microstructures on both the interference fringe visibility and the phase of intensity oscillations. A method based on the phase-attenuation duality that holds for soft tissues and high x-ray energies is proposed to retrieve the imaginary part of the complex dark-field contrast for imaging. Through computer simulation study with a specially designed numerical phantom, they evaluate and validate the derived analytic formulae and the proposed retrieval method. Both theoretical analysis and computer simulation study show that the effect of an object's subpixel microstructures on x-ray phase contrast imaging method implemented with Talbot interferometry can be fully characterized by a complex dark-field contrast. The imaginary part of complex dark-field contrast quantifies the influence of the object's subpixel microstructures on the phase of intensity oscillations. Furthermore, at relatively high energies, for soft tissues it can be

  20. Potentiometric Surface of the Aquia Aquifer in Southern Maryland, September 1999

    USGS Publications Warehouse

    Curtin, Stephen E.; Andreasen, David C.; Wheeler, Judith C.

    2001-01-01

    This report presents a map showing the potentiometric surface of the Aquia aquifer in the Aquia Formation of Paleocene age in Southern Maryland during September 1999. The map is based on water-level measurements in 85 wells. The potentiometric surface was above sea level near the northern boundary and outcrop area of the aquifer in a topographically high area of Anne Arundel County, and was below sea level in the remainder of the study area. The hydraulic gradient was directed southeastward toward an extensive cone of depression around well fields at Lexington Park and Solomons Island. Ground-water levels were more than 80 feet below sea level in a 100-square-mile area surrounding the deepest part of the cone of depression. A cone of depression formed in northern Calvert County due to pumpage at Chesapeake Beach and North Beach. The water level has declined to 43 feet below sea level in this area. The lowest measurement was 164 feet below sea level in a well near the center of the cone of depression at Lexington Park.

  1. WATERSHED CHARACTERISTICS AND PRE-RESTORATION SURFACE-WATER HYDROLOGY OF MINEBANK RUN, BALTIMORE COUNTY, MARYLAND, WATER YEARS 2002-04

    EPA Science Inventory

    Stream restoration efforts have been ongoing in Maryland since the early 1990s. Physical stream restoration often involves replacement of lost sediments to elevate degraded streambeds, re-establishment of riffle-pool sequences along the channel profile, planting vegetation in rip...

  2. Maryland School Performance Assessment Program (MSPAP), 1999. Technical Report.

    ERIC Educational Resources Information Center

    Maryland State Dept. of Education, Baltimore.

    Maryland School Performance Assessment Program (MSPAP) assessments are criterion-referenced performance tests designed, developed, and implemented by the Maryland State Department of Education in collaboration with classroom teachers and other Maryland educators. MSPAP is the major strategy for implementing Maryland's educational reform…

  3. Potentiometric Surface of the Magothy Aquifer in Southern Maryland, September 2007

    USGS Publications Warehouse

    Curtin, Stephen E.; Andreasen, David C.; Staley, Andrew W.

    2009-01-01

    This report presents a map showing the potentiometric surface of the Magothy aquifer in the Magothy Formation of Late Cretaceous age in Southern Maryland during September 2007. The map is based on water-level measurements in 69 wells. The highest measured water level was 85 feet above sea level near the northern boundary and outcrop area of the aquifer in the north-central part of Anne Arundel County. The potentiometric surface declined towards the south. Local gradients were directed toward the center of a cone of depression in the Waldorf area that developed in response to pumping. Measured ground-water levels were as low as 90 feet below sea level in the Waldorf area.

  4. University of Maryland MRSEC - Collaborations: International

    Science.gov Websites

    to Maryland. We have played an active role in organizing international workshops, both at Maryland Hyldgaard (Chalmers U. of Technology, Gothenburg, Sweden) and T.L. Einstein (MRSEC-1) Role of interactions

  5. Better trauma care. How Maryland does it.

    PubMed

    Wish, John R; Long, William B; Edlich, Richard F

    2005-01-01

    In March, 1970, the Maryland State Police, in cooperation with the University of Maryland, started the first statewide airborne transportation system. It was modeled after the army's success in Korea and Vietnam, where battlefield injuries were flown to front-line MASH units. The world's premier statewide medical aviation division was made possible through a cooperative effort between the Maryland State Police Aviation Division and Dr. R Adams Cowley at the University of Maryland Hospital as a public service to the citizens of the state. The Maryland Institute for Emergency Medical Services Systems (MIEMSS) has five components: (1) aircraft, (2) state troopers, (3) system communications (SYSCOM) center, (4) ambulance and fire emergency rescue, and (5) Level I adult and pediatric trauma centers and a regional burn center. The Maryland State Police Aviation Division now has 12 Aerospace Dauphin AS365N helicopters that operate out of eight fixed points throughout the state. Each helicopter has a two-person crew that consists of a pilot and a paramedic. Since 1993, the overall coordination of emergency medical services (EMS) has been under the purview of MIEMSS, an independent executive-level state agency that is governed by an appointed board and advisory council. To ensure stable funding for Maryland's world renowned emergency medical services (EMS) system, including med-evac helicopters, ambulances, fire equipment, rescue squads, and trauma units, a "surcharge" of $13.50 per year is collected with the automobile registration fee where applicable. The SYSCOM center in Baltimore coordinates the helicopter transport to the scene of the accident as well as referral to the specialty care facility: Adult Level I Trauma Center, Pediatric Level I Trauma Center, and Regional Burn Center. An on-the-scene evaluation of this exemplary emergency medical system in Maryland provides further convincing evidence of the performance of the Maryland State Police Aviation Division as

  6. Effects of Withdrawals on Ground-Water Levels in Southern Maryland and the Adjacent Eastern Shore, 1980-2005

    USGS Publications Warehouse

    Soeder, Daniel J.; Raffensperger, Jeff P.; Nardi, Mark R.

    2007-01-01

    Ground water is the primary source of water supply in most areas of Maryland?s Atlantic Coastal Plain, including Southern Maryland. The counties in this area are experiencing some of the most rapid growth and development in the State, resulting in an increased demand for ground-water production. The cooperative, basic water-data program of the U.S. Geological Survey and the Maryland Geological Survey has collected long-term observations of ground-water levels in Southern Maryland and parts of the Eastern Shore for many decades. Additional water-level observations were made by both agencies beginning in the 1970s, under the Power Plant Research Program of the Maryland Department of Natural Resources. These long-term water levels commonly show significant declines over several decades, which are attributed to ground-water withdrawals. Ground-water-level trends since 1980 in major Coastal Plain aquifers such as the Piney Point-Nanjemoy, Aquia, Magothy, upper Patapsco, lower Patapsco, and Patuxent were compared to water use and withdrawal data. Potentiometric surface maps show that most of the declines in ground-water levels can be directly related to effects from major pumping centers. There is also evidence that deep drawdowns in some pumped aquifers may be causing declines in adjacent, unpumped aquifers. Water-level hydrographs of many wells in Southern Maryland show linear declines in levels year after year, instead of the gradual leveling-off that would be expected as the aquifers equilibrate with pumping. A continual increase in the volumes of water being withdrawn from the aquifers is one explanation for why they are not reaching equilibrium. Although reported ground-water production in Southern Maryland has increased somewhat over the past several decades, the reported increases are often not large enough to account for the observed water-level declines. Numerical modeling simulations indicate that a steady, annual increase in the number of small wells could

  7. Glancing angle Talbot-Lau grating interferometers for phase contrast imaging at high x-ray energy

    NASA Astrophysics Data System (ADS)

    Stutman, D.; Finkenthal, M.

    2012-08-01

    A Talbot-Lau interferometer is demonstrated using micro-periodic gratings inclined at a glancing angle along the light propagation direction. Due to the increase in the effective thickness of the absorption gratings, the device enables differential phase contrast imaging at high x-ray energy, with improved fringe visibility (contrast). For instance, at 28° glancing angle, we obtain up to ˜35% overall interferometer contrast with a spectrum having ˜43 keV mean energy, suitable for medical applications. In addition, glancing angle interferometers could provide high contrast at energies above 100 keV, enabling industrial and security applications of phase contrast imaging.

  8. Measuring finite-range phase coherence in an optical lattice using Talbot interferometry

    PubMed Central

    Santra, Bodhaditya; Baals, Christian; Labouvie, Ralf; Bhattacherjee, Aranya B.; Pelster, Axel; Ott, Herwig

    2017-01-01

    One of the important goals of present research is to control and manipulate coherence in a broad variety of systems, such as semiconductor spintronics, biological photosynthetic systems, superconducting qubits and complex atomic networks. Over the past decades, interferometry of atoms and molecules has proven to be a powerful tool to explore coherence. Here we demonstrate a near-field interferometer based on the Talbot effect, which allows us to measure finite-range phase coherence of ultracold atoms in an optical lattice. We apply this interferometer to study the build-up of phase coherence after a quantum quench of a Bose–Einstein condensate residing in a one-dimensional optical lattice. Our technique of measuring finite-range phase coherence is generic, easy to adopt and can be applied in practically all lattice experiments without further modifications. PMID:28580941

  9. Maryland Day Care Voucher System.

    ERIC Educational Resources Information Center

    Hildebrand, Joan M.

    This manual was written to assist States and other governmental units wishing to replicate the Maryland Day Care Voucher Program, a system of providing child care subsidies to eligible families. Chapter I provides brief histories of day care in Maryland and that State's grant to demonstrate the viability of a day care voucher system. Chapter II…

  10. Maryland Early Head Start Initiative

    ERIC Educational Resources Information Center

    Center for Law and Social Policy, Inc. (CLASP), 2012

    2012-01-01

    Since 2000, Maryland has provided state supplemental funds to Head Start and Early Head Start (EHS) programs to improve access. Local EHS programs may use funds, through child care partnerships, to extend the EHS day or year. Maryland's approach to building on EHS includes: (1) Increase the capacity of existing Head Start and EHS programs to…

  11. Handbook for Teachers and Principals Participating in the Montgomery County Public Schools' Outdoor Education Program, 1983-1985.

    ERIC Educational Resources Information Center

    Montgomery County Public Schools, Rockville, MD.

    The 1983-85 outdoor education handbook for teachers and principals in the Montgomery County Public Schools' (Maryland) outdoor education program gives the Superintendent of Schools' message to participants, lists seven objectives, describes potential areas of study (some possible at all centers, some unique to particular centers), describes…

  12. Water volume and sediment volume and density in Lake Linganore between Boyers Mill Road Bridge and Bens Branch, Frederick County, Maryland, 2012

    USGS Publications Warehouse

    Sekellick, Andrew J.; Banks, William S.L.; Myers, Michael K.

    2013-01-01

    To assist in understanding sediment loadings and the management of water resources, a bathymetric survey was conducted in the part of Lake Linganore between Boyers Mill Road Bridge and Bens Branch in Frederick County, Maryland. The bathymetric survey was performed in January 2012 by the U.S. Geological Survey, in cooperation with the City of Frederick and Frederick County. A separate, but related, field effort to collect 18 sediment cores was conducted in March and April 2012. Depth and location data from the bathymetric survey and location data for the sediment cores were compiled and edited by using geographic information system (GIS) software. A three-dimensional triangulated irregular network (TIN) model of the lake bottom was created to calculate the volume of stored water in the reservoir. Large-scale topographic maps of the valley prior to inundation in 1972 were provided by the Frederick County Division of Utilities and Solid Waste Management and digitized for comparison with current (2012) conditions in order to calculate sediment volume. Cartographic representations of both water depth and sediment accumulation were produced, along with an accuracy assessment for the resulting bathymetric model. Vertical accuracies at the 95-percent confidence level for the collected data, the bathymetric surface model, and the bathymetric contour map were calculated to be 0.64 feet (ft), 1.77 ft, and 2.30 ft, respectively. A dry bulk sediment density was calculated for each of the 18 sediment cores collected during March and April 2012, and used to determine accumulated sediment mass. Water-storage capacity in the study area is 110 acre-feet (acre-ft) at a full-pool elevation 308 ft above the National Geodetic Vertical Datum of 1929, whereas total sediment volume in the study area is 202 acre-ft. These totals indicate a loss of about 65 percent of the original water-storage capacity in the 40 years since dam construction. This corresponds to an average rate of sediment

  13. Maryland motor carrier program performance enhancement.

    DOT National Transportation Integrated Search

    2014-02-01

    Using the inspection summary data (24-1 reports) from SHA for years 2006 to 2010 and inspection and violation : files of Motor Carrier Management Information System (MCMIS) for the same years, the Maryland State Police : (MSP) and Maryland Transporta...

  14. A Study of the Guidance Program and Its Management in the Montgomery County Public Schools.

    ERIC Educational Resources Information Center

    Ebert, Mary K.; And Others

    This study responds to the Board of Education's request that a plan be developed to assess and improve guidance and counseling services in the Montgomery County Public Schools (MCPS), Maryland. Data collection activities included (1) a review of MCPS policies and regulations, and (2) analysis of data from counselor logs, counselor observations,…

  15. 77 FR 1430 - Maryland Regulatory Program

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-10

    ... DEPARTMENT OF THE INTERIOR Office of Surface Mining Reclamation and Enforcement 30 CFR Part 920... Mining Reclamation and Enforcement (OSM), Interior. ACTION: Proposed rule; extension of the comment... the Maryland regulatory program (the ``Maryland program'') under the Surface Mining Control and...

  16. Summary and interpretation of discrete and continuous water-quality monitoring data, Mattawoman Creek, Charles County, Maryland, 2000-11

    USGS Publications Warehouse

    Chanat, Jeffrey G.; Miller, Cherie V.; Bell, Joseph M.; Majedi, Brenda Feit; Brower, David P.

    2013-01-01

    Discrete samples and continuous (15-minute interval) water-quality data were collected at Mattawoman Creek (U.S. Geological Survey station number 01658000) from October 2000 through January 2011, in cooperation with the Charles County (Maryland) Department of Planning and Growth Management, the Maryland Department of the Environment, and the Maryland Geological Survey. Mattawoman Creek is a fourth-order Maryland tributary to the tidal freshwater Potomac River; the creek’s watershed is experiencing development pressure due to its proximity to Washington, D.C. Data were analyzed for the purpose of describing ambient water quality, identifying potential contaminant sources, and quantifying nutrient and sediment loads to the tidal freshwater Mattawoman estuary. Continuous data, collected at 15-minute intervals, included discharge, derived from stage measurements made using a pressure transducer, as well as water temperature, pH, specific conductance, dissolved oxygen, and turbidity, all measured using a water-quality sonde. In addition to the continuous data, a total of 360 discrete water-quality samples, representative of monthly low-flow and targeted storm conditions, were analyzed for suspended sediment and nutrients. Continuous observations gathered by a second water-quality sonde, which was temporarily deployed in 2011 for quality-control purposes, indicated substantial lateral water-quality gradients due to inflow from a nearby tributary, representing about 10 percent of the total gaged area upstream of the sampling location. These lateral gradients introduced a time-varying bias into both the continuous and discrete data, resulting in observations that were at some times representative of water-quality conditions in the main channel and at other times biased towards conditions in the tributary. Despite this limitation, both the continuous and discrete data provided insight into the watershed-scale factors that influence water quality in Mattawoman Creek

  17. Cadaveric and in vivo human joint imaging based on differential phase contrast by X-ray Talbot-Lau interferometry.

    PubMed

    Tanaka, Junji; Nagashima, Masabumi; Kido, Kazuhiro; Hoshino, Yoshihide; Kiyohara, Junko; Makifuchi, Chiho; Nishino, Satoshi; Nagatsuka, Sumiya; Momose, Atsushi

    2013-09-01

    We developed an X-ray phase imaging system based on Talbot-Lau interferometry and studied its feasibility for clinical diagnoses of joint diseases. The system consists of three X-ray gratings, a conventional X-ray tube, an object holder, an X-ray image sensor, and a computer for image processing. The joints of human cadavers and healthy volunteers were imaged, and the results indicated sufficient sensitivity to cartilage, suggesting medical significance. Copyright © 2012. Published by Elsevier GmbH.

  18. Potentiometric Surface of the Lower Patapsco Aquifer in Southern Maryland, September 2007

    USGS Publications Warehouse

    Curtin, Stephen E.; Andreasen, David C.; Staley, Andrew W.

    2009-01-01

    This report presents a map showing the potentiometric surface of the lower Patapsco aquifer in the Patapsco Formation of Early Cretaceous age in Southern Maryland during September 2007. The map is based on water-level measurements in 65 wells. The highest measured water level was 111 feet above sea level near the northwestern boundary and outcrop area of the aquifer in northern Prince George's County. From this area, the potentiometric surface declined towards well fields at Severndale and Arnold. The measured ground-water levels were 87 feet below sea level at Severndale, and 42 feet below sea level at Arnold. There was also a cone of depression covering a large area in Charles County that includes Waldorf, La Plata, Indian Head, and the Morgantown power plant. The ground-water levels measured were as low as 219 feet below sea level at Waldorf, 187 feet below sea level at La Plata, 106 feet below sea level at Indian Head, and 89 feet below sea level at the Morgantown power plant.

  19. Potentiometric Surface of the Upper Patapsco Aquifer in Southern Maryland, September 2007

    USGS Publications Warehouse

    Curtin, Stephen E.; Andreasen, David C.; Staley, Andrew W.

    2009-01-01

    This report presents a map showing the potentiometric surface of the upper Patapsco aquifer in the Patapsco Formation of Early Cretaceous age in Southern Maryland during September 2007. The map is based on water-level measurements in 50 wells. The highest measured water level was 120 feet above sea level near the northern boundary and outcrop area of the aquifer in northern Anne Arundel County. From this area, the potentiometric surface declined to the south toward a well field in the Annapolis-Arnold area, and from all directions toward four cones of depression. These cones are located in the Waldorf-La Plata area, Chalk Point-Prince Frederick area, Swan Point subdivision in southern Charles County, and the Lexington Park-St. Inigoes area. The lowest measured ground-water level was 44 feet below sea level at Arnold, 106 feet below sea level south of Waldorf, 54 feet below sea level at Swan Point, 59 feet below sea level at Chalk Point, and 58 feet below sea level at Lexington Park.

  20. Herbicides and nitrates in groundwater of Maryland and childhood cancers: a geographic information systems approach.

    PubMed

    Thorpe, Nancy; Shirmohammadi, Adel

    2005-01-01

    This hypothesis-generating study explores spatial patterns of childhood cancers in Maryland and investigates their potential associations with herbicides and nitrates in groundwater. The Maryland Cancer Registry (MCR) provided data for bone and brain cancers, leukemia, and lymphoma, for ages 0-17, during the years 1992-1998. Cancer clusters and relative risks generated in the study indicate higher relative risk areas and potential clusters in several counties. Contingency table analysis indicates a potential association with several herbicides and nitrates. Cancer rates for the four types have a crude odds ratio (OR) = 1.10 (0.78-1.56) in relationship to atrazine, and an OR = 1.54 (1.14-2.07) for metolachlor. Potential association to mixtures of three compounds give an OR = 7.56 (4.16-13.73). A potential association is indicated between leukemia and nitrates, OR = 1.81 (1.35-2.42), and bone cancer with metolachlor, OR = 2.26 (0.97-5.24). These results give insight to generate a hypothesis of the potential association between exposure to these herbicides and nitrates and specific types of childhood cancer.

  1. Focused feasibility study for surface soil at the main pits and pushout area, J-field toxic burning pits area, Aberdeen Proving Ground, Maryland

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Patton, T.; Benioff, P.; Biang, C.

    1996-06-01

    The Environmental Management Division of Aberdeen Proving Ground (APG), Maryland, is conducting a remedial investigation and feasibility study of the J-Field area at APG pursuant to the Comprehensive Environmental Response, Compensation, and Liability Act, as amended (CERCLA). J-Field is located within the Edgewood Area of APG in Harford County, Maryland. Since World War II, activities in the Edgewood Area have included the development, manufacture, testing, and destruction of chemical agents and munitions. These materials were destroyed at J-Field by open burning/open detonation. Portions of J-Field continue to be used for the detonation and disposal of unexploded ordnance (UXO) by openmore » burning/open detonation under authority of the Resource Conservation and Recovery Act.« less

  2. Maryland: Sailing into the Electronic Future.

    ERIC Educational Resources Information Center

    Smith, Barbara G., Ed.

    1996-01-01

    Describes information technology programs in Maryland, including the Sailor Project, that created a statewide telecommunications network providing Internet access without charge from libraries, homes, offices, schools, and shopping malls; University of Maryland initiatives; distance learning in higher education; and a project that allows worldwide…

  3. Academic Profile of 1983 Maryland College-Bound Seniors.

    ERIC Educational Resources Information Center

    Maryland State Board for Higher Education, Annapolis.

    Information is presented on Scholastic Aptitude Test (SAT) performance of Maryland high school seniors who graduated in 1983, and characteristics of the students are examined. Of the 29,755 Maryland students who took the SAT in 1983, 18 percent were black, 20 percent attended nonpublic schools, and 53 percent were females. Maryland seniors…

  4. Hydrologic Data for Deep Creek Lake and Selected Tributaries, Garrett County, Maryland, 2007-08

    USGS Publications Warehouse

    Banks, William S.L.; Davies, William J.; Gellis, Allen C.; LaMotte, Andrew E.; McPherson, Wendy S.; Soeder, Daniel J.

    2010-01-01

    Introduction Recent and ongoing efforts to develop the land in the area around Deep Creek Lake, Garrett County, Maryland, are expected to change the volume of sediment moving toward and into the lake, as well as impact the water quality of the lake and its many tributaries. With increased development, there is an associated increased demand for groundwater and surface-water withdrawals, as well as boat access. Proposed dredging of the lake bottom to improve boat access has raised concerns about the adverse environmental effects such activities would have on the lake. The Maryland Department of Natural Resources (MDDNR) and the U.S. Geological Survey (USGS) entered into a cooperative study during 2007 and 2008 to address these issues. This study was designed to address several objectives to support MDDNR?s management strategy for Deep Creek Lake. The objectives of this study were to: Determine the current physical shape of the lake through bathymetric surveys; Initiate flow and sediment monitoring of selected tributaries to characterize the stream discharge and sediment load of lake inflows; Determine sedimentation rates using isotope analysis of sediment cores; Characterize the degree of hydraulic connection between the lake and adjacent aquifer systems; and Develop an estimate of water use around Deep Creek Lake. Summary of Activities Data were collected in Deep Creek Lake and in selected tributaries from September 2007 through September 2008. The methods of investigation are presented here and all data have been archived according to USGS policy for future use. The material presented in this report is intended to provide resource managers and policy makers with a broad understanding of the bathymetry, surface water, sedimentation rates, groundwater, and water use in the study area. The report is structured so that the reader can access each topic separately using any hypertext markup (HTML) language reader. In order to establish a base-line water-depth map of

  5. 78 FR 76169 - Patuxent Research Refuge, Prince George's and Anne Arundel Counties, MD; Final Comprehensive...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-16

    ...We, the U.S. Fish and Wildlife Service (Service), announce the availability of the final comprehensive conservation plan (CCP) and finding of no significant impact (FONSI) for Patuxent Research Refuge (Patuxent RR, refuge), located in Prince George's and Anne Arundel Counties, Maryland. In this final CCP, we describe how we will manage the refuge for the next 15 years.

  6. Assessment of ebola virus disease, health care infrastructure, and preparedness - four counties,Southeastern Liberia, august 2014.

    PubMed

    Forrester, Joseph D; Pillai, Satish K; Beer, Karlyn D; Neatherlin, John; Massaquoi, Moses; Nyenswah, Tolbert G; Montgomery, Joel M; De Cock, Kevin

    2014-10-10

    Ebola virus disease (Ebola) is a multisystem disease caused by a virus of the genus Ebolavirus. In late March 2014, Ebola cases were described in Liberia, with epicenters in Lofa County and later in Montserrado County. While information about case burden and health care infrastructure was available for the two epicenters, little information was available about remote counties in southeastern Liberia. Over 9 days, August 6-14, 2014, Ebola case burden, health care infrastructure, and emergency preparedness were assessed in collaboration with the Liberian Ministry of Health and Social Welfare in four counties in southeastern Liberia: Grand Gedeh, Grand Kru, River Gee, and Maryland. Data were collected by health care facility visits to three of the four county referral hospitals and by unstructured interviews with county and district health officials, hospital administrators, physicians, nurses, physician assistants, and health educators in all four counties. Local burial practices were discussed with county officials, but no direct observation of burial practices was conducted. Basic information about Ebola surveillance and epidemiology, case investigation, contact tracing, case management, and infection control was provided to local officials.

  7. High precision locating control system based on VCM for Talbot lithography

    NASA Astrophysics Data System (ADS)

    Yao, Jingwei; Zhao, Lixin; Deng, Qian; Hu, Song

    2016-10-01

    Aiming at the high precision and efficiency requirements of Z-direction locating in Talbot lithography, a control system based on Voice Coil Motor (VCM) was designed. In this paper, we built a math model of VCM and its moving characteristic was analyzed. A double-closed loop control strategy including position loop and current loop were accomplished. The current loop was implemented by driver, in order to achieve the rapid follow of the system current. The position loop was completed by the digital signal processor (DSP) and the position feedback was achieved by high precision linear scales. Feed forward control and position feedback Proportion Integration Differentiation (PID) control were applied in order to compensate for dynamic lag and improve the response speed of the system. And the high precision and efficiency of the system were verified by simulation and experiments. The results demonstrated that the performance of Z-direction gantry was obviously improved, having high precision, quick responses, strong real-time and easily to expend for higher precision.

  8. Selected Streamflow Statistics for Streamgaging Stationsin Northeastern Maryland, 2006

    USGS Publications Warehouse

    Ries, Kernell G.

    2006-01-01

    Streamflow statistics were calculated for 47 U.S. Geological Survey (USGS) streamgaging stations in northeastern Maryland, in cooperation with (1) the University of Maryland, Baltimore County, Center for Urban Environmental Research and Education; (2) the Baltimore City Department of Public Works; and (3) the Baltimore County Department of Environmental Protection and Resource Management. The statistics include the mean, minimum, maximum, and standard deviation of the daily mean discharges for the periods of record at the stations, as well as flow-duration and low-flow frequency statistics. The flow-duration statistics include the 1-, 2-, 5-, 10-, 15-, 20-, 25-, 30-, 40-, 50-, 60-, 70-, 75-, 80-, 85-, 90-, 95-, 98-, and 99-percent duration discharges. The low-flow frequency statistics include the average discharges for 1, 7, 14, and 30 days that recur, on average, once in 1.01, 2, 5, 10, 20, 50, and 100 years. The statistics were computed only for the 25 stations with periods of record of 10 years or more. The statistics were computed from records available through September 30, 2004 using standard methods and computer software developed by the USGS. A comparison between low-flow frequency statistics computed for this study and for a previous study that used data available through September 30, 1989 was done for seven stations. The comparison indicated that, for the 7-day mean low flow, the newer values were 19.8 and 15.3 percent lower for the 20- and 10-year recurrence intervals, respectively, and 2.1 percent higher for the 2-year recurrence interval, than the older values. For the 14-day mean low flow, the newer 20- and 10-year values were 25.2 and 15.5 percent lower, respectively, and the 2-year value was 2.9 percent higher than the older values. For the 30-day mean low flow, the newer 20-, 10-, and 2-year values were 10.8, 7.9, and 0.8 percent lower, respectively, than the older values. The newer values are generally lower than the older ones most likely

  9. Talbot phase-contrast X-ray imaging for the small joints of the hand

    PubMed Central

    Stutman, Dan; Beck, Thomas J; Carrino, John A; Bingham, Clifton O

    2011-01-01

    A high resolution radiographic method for soft tissues in the small joints of the hand would aid in the study and treatment of Rheumatoid Arthritis (RA) and Osteoarthritis (OA), which often attacks these joints. Of particular interest would be imaging with <100 μm resolution the joint cartilage, whose integrity is a main indicator of disease. Differential phase-contrast or refraction based X-ray imaging (DPC) with Talbot grating interferometers could provide such a method, since it enhances soft tissue contrast and it can be implemented with conventional X-ray tubes. A numerical joint phantom was first developed to assess the angular sensitivity and spectrum needed for a hand DPC system. The model predicts that due to quite similar refraction indexes for joint soft tissues, the refraction effects are very small, requiring high angular resolution. To compare our model to experiment we built a high resolution bench-top interferometer using 10 μm period gratings, a W anode tube and a CCD based detector. Imaging experiments on animal cartilage and on a human finger support the model predictions. For instance, the estimated difference between the index of refraction of cartilage and water is of only several percent at ~25 keV mean energy, comparable to that between the linear attenuation coefficients. The potential advantage of DPC imaging comes thus mainly from the edge enhancement at the soft tissue interfaces. Experiments using a cadaveric human finger are also qualitatively consistent with the joint model, showing that refraction contrast is dominated by tendon embedded in muscle, with the cartilage layer difficult to observe in our conditions. Nevertheless, the model predicts that a DPC radiographic system for the small hand joints of the hand could be feasible using a low energy quasi-monochromatic source, such as a K-edge filtered Rh or Mo tube, in conjunction with a ~2 m long ‘symmetric’ interferometer operated in a high Talbot order. PMID:21841214

  10. Talbot phase-contrast x-ray imaging for the small joints of the hand

    NASA Astrophysics Data System (ADS)

    Stutman, Dan; Beck, Thomas J.; Carrino, John A.; Bingham, Clifton O.

    2011-09-01

    A high-resolution radiographic method for soft tissues in the small joints of the hand would aid in the study and treatment of rheumatoid arthritis (RA) and osteoarthritis (OA), which often attacks these joints. Of particular interest would be imaging with <100 µm resolution the joint cartilage, whose integrity is a main indicator of disease. Differential phase-contrast (DPC) or refraction-based x-ray imaging with Talbot grating interferometers could provide such a method, since it enhances soft tissue contrast and can be implemented with conventional x-ray tubes. A numerical joint phantom was first developed to assess the angular sensitivity and spectrum needed for a hand DPC system. The model predicts that, due to quite similar refraction indexes for joint soft tissues, the refraction effects are very small, requiring high angular resolution. To compare our model to experiment we built a high-resolution bench-top interferometer using 10 µm period gratings, a W anode tube and a CCD-based detector. Imaging experiments on animal cartilage and on a human finger support the model predictions. For instance, the estimated difference between the index of refraction of cartilage and water is of only several percent at ~25 keV mean energy, comparable to that between the linear attenuation coefficients. The potential advantage of DPC imaging thus comes mainly from the edge enhancement at the soft tissue interfaces. Experiments using a cadaveric human finger are also qualitatively consistent with the joint model, showing that refraction contrast is dominated by tendon embedded in muscle, with the cartilage layer difficult to observe in our conditions. Nevertheless, the model predicts that a DPC radiographic system for the small hand joints of the hand could be feasible using a low energy quasi-monochromatic source, such as a K-edge filtered Rh or Mo tube, in conjunction with a ~2 m long 'symmetric' interferometer operated in a high Talbot order.

  11. Maryland State and Local Governments: An Instructional Unit for the Eighth Grade Social Studies Course "Maryland Studies."

    ERIC Educational Resources Information Center

    Lewis, Wanda B.; Stamm, Michael J.

    An eighth grade social studies unit on Maryland state and local governments contains three sections. In the first section, a two-column chart matches grade level objectives related to Maryland governments to specific activities discussed in the next section. A content outline is divided into sections on introductory materials, including vocabulary…

  12. 19. DECK VIEW LOOKING FORWARD WITH MAST, RIGGING AND BOWSPRIT ...

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

    19. DECK VIEW LOOKING FORWARD WITH MAST, RIGGING AND BOWSPRIT DETAILS - HATCH COVER REMOVED TO SHOW CENTERBOARD TRUNK - KATHRYN-Two-sail Bateau "Skipjack", Dogwood Harbor, Chesapeake Bay, Tilghman, Talbot County, MD

  13. Baltimore, Maryland

    NASA Technical Reports Server (NTRS)

    2002-01-01

    This Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) image of Baltimore was acquired on April 4, 2000, and covers an area of 17 by 20 km. Combining green, red, and near-infrared light to create a false-color composite, the image shows vegetation as red, water as blue, and urban areas as grey. Baltimore is the largest city in Maryland and one of the busiest ports in the United States. Its economy focuses on research and development, especially in the areas of aquaculture, pharmaceuticals, and medical supplies and services. Before European settlement, the site of Baltimore was inhabited by Native Americans of the Susquehannock tribe. The town was founded in 1729 and named for the barons Baltimore, the British founders of the Maryland Colony. In one week (January 28, 2001), the Baltimore Ravens will play the New York Giants in Super Bowl XXXV, the championship game of the National Football League (NFL). NASA/GSFC/MITI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team

  14. Potentiometric surface of the Magothy Aquifer in southern Maryland during September 1988

    USGS Publications Warehouse

    Mack, Frederick K.; Andreasen, David C.; Curtin, Stephen E.; Wheeler, Judith C.

    1990-01-01

    A map showing the potentiometric surface of the Magothy aquifer in southern Maryland during the fall of 1988 was prepared from water-level measurements in 83 observation wells. The potentiometric surface was highest near the northwest boundary and outcrop area of the aquifer in topographically high locations of Anne Arundel and Prince Georges Counties. The hydraulic gradient in the study area was generally southeastward or toward the centers of three cones of depression that have developed in response to pumping stresses. These cones formed around well fields in the Annapolis, Waldorf, and Chalk Point areas. The potentiometric surface of the Magothy aquifer was more than 40 ft below sea level in parts of the Waldorf and Chalk Point areas. (USGS)

  15. Potentiometric Surface of the Magothy Aquifer in Southern Maryland, September 2009

    USGS Publications Warehouse

    Curtin, Stephen E.; Andreasen, David C.; Staley, Andrew W.

    2010-01-01

    This report presents a map showing the potentiometric surface of the Magothy aquifer in the Magothy Formation of Late Cretaceous age in Southern Maryland during September 2009. The map is based on water-level measurements in 66 wells. The highest measured water level was 85 feet above sea level near the northern boundary and outcrop area of the aquifer in the north-central part of Anne Arundel County. The potentiometric surface declined towards the south. Local hydraulic gradients were directed toward the center of a cone of depression in the Waldorf area that developed in response to pumping. Measured groundwater levels were as low as 71 feet below sea level in the Waldorf area. The map also shows well yield in gallons per day for 2008 at wells or well fields.

  16. FISHERY-ORIENTED MODEL OF MARYLAND OYSTER POPULATIONS

    EPA Science Inventory

    We used time series data to calibrate a model of oyster population dynamics for Maryland's Chesapeake Bay. Model parameters were fishing mortality, natural mortality, recruitment, and carrying capacity. We calibrated for the Maryland bay as a whole and separately for 3 salinity z...

  17. Estimating the Socio-economic Impact of Earth Observing Data in Sonoma County

    NASA Astrophysics Data System (ADS)

    Green, K.; Gaffney, K.; Escobar, V. M.; Tukman, M.

    2016-12-01

    In 2013, NASA's Carbon Monitoring System Applications Effort funded a ROSES proposal from the University of Maryland to develop of a prototype for measuring, reporting and verification (MRV) system based on commercial off-the-shelf (COTS) remote sensing and analysis capabilities to support ecomarket infrastructure in Sonoma County, California. One of the goals of the project is to identify how stakeholder needs and requirements can be integrated during the creation and implementation of MRV systems to provide effective decision support and compliance capabilities, and with better-informed policy decisions. NASA funding was pooled with that from Sonoma County, USGS, and others for the creation of multiple high resolution county wide geospatial products The project included the acquisition and processing of Q1 lidar and 6 inch, 4-band multispectral imagery for the entire county of Sonoma which the county makes available to the public for download at http://sonomavegmap.org, http://opentopography.org/, and https://coast.noaa.gov . To understand the value of the county's ortho-imagery and lidar products to users, the county initiated a survey of users in the spring of 2016. Survey questions were developed by Sonoma county, NASA , and consultants, and a link to them in SuveyMonkey was sent out to 400+ individuals signed up to receive the project's newsletters (www.sonomavegmap.org). This presentation will summarize the results and key findings of the survey.

  18. Just the Right Mix: Identifying Potential Dropouts in Montgomery County Public Schools Using an Early Warning Indicators Approach

    ERIC Educational Resources Information Center

    West, Thomas C.

    2013-01-01

    Each school year, roughly a thousand students drop out of Montgomery County (Maryland) Public Schools (MCPS). However, unlike other large, urban school districts where students who drop out skip school and are suspended often (Balfanz & Byrnes, 2010), students who drop out of MCPS are present in school; they just are not doing well…

  19. Potentiometric Surface of the Lower Patapsco Aquifer in Southern Maryland, September 2009

    USGS Publications Warehouse

    Curtin, Stephen E.; Andreasin, David C.; Staley, Andrew W.

    2010-01-01

    This report presents a map showing the potentiometric surface of the lower Patapsco aquifer in the Patapsco Formation of Early Cretaceous age in Southern Maryland during September 2009. The map is based on water-level measurements in 64 wells. The highest measured water level was 110 feet above sea level near the northwestern boundary and outcrop area of the aquifer in northern Prince George's County. From this area, the potentiometric surface declined towards well fields at Severndale, Broad Creek, and Arnold. The measured groundwater levels were 99 feet below sea level at Severndale, 50 feet below sea level at Broad Creek, and 36 feet below sea level at Arnold. There was also a cone of depression in Charles County that includes Waldorf, La Plata, Indian Head, and the Morgantown power plant. The groundwater levels measured were as low as 215 feet below sea level at Waldorf, 149 feet below sea level at La Plata, 121 feet below sea level at Indian Head, and 96 feet below sea level at the Morgantown power plant. The map also shows well yield in gallons per day for 2008 at wells or well fields.

  20. Occurrence and distribution of enteric viruses in shallow ground water and factors affecting well vulnerability to microbiological contamination in Worcester and Wicomico counties, Maryland

    USGS Publications Warehouse

    Banks, William S.L.; Klohe, Cheryl A.; Battigelli, David A.

    2001-01-01

    The U.S. Geological Survey, in cooperation with the Maryland Department of the Environment and the Wisconsin State Laboratory of Hygiene, conducted a study to characterize the occurrence and distribution of viral contamination in small (withdrawing less than 10,000 gallons per day) public water-supply wells screened in the water-table aquifer in the Coastal Plain in Worcester and Wicomico Counties, Maryland.Two hundred seventy-eight well sites were evaluated with regard to simulated ground-water flow paths, land use, natural soils groups, and well characteristics, such as well depth and well age. Flow and transport simulations of the water-table aquifer indicated that wells screened less than about 50 feet below land surface (shallow wells) were most vulnerable to surface contamination, which in some cases could originate from as far as 2,000 feet upgradient of the well. Animal-feeding and agricultural-storage operations were considered among the most likely sources for viral contamination; therefore, sites close to these activities were considered most vulnerable. Soil groups were evaluated with regard to depth to water and moisture-holding capacity. Wells with shallow depths to water or in very sandy soils were considered more vulnerable to contamination than deep wells (greater than 50 feet) and those completed in finer-grained soils. Older wells and wells where coliform bacteria had been detected in the past were classified as highly vulnerable. On the basis of this evaluation, 27 sites considered to be susceptible were sampled.Samples were collected by pumping up to 400 gallons of untreated well water through an electropositive filter. Water concentrates were subjected to cell-culture assay for the detection of culturable viruses and reverse-transcription polymerase chain reaction/gene probe assays to detect nonculturable viruses; grab samples were analyzed for somatic and male-specific coliphages, Bacteroides fragilis, Clostridium perfringens, enterococci

  1. 75 FR 79063 - Maryland Disaster #MD-00014

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-17

    ... SMALL BUSINESS ADMINISTRATION [Disaster Declaration 12411 and 12412] Maryland Disaster MD-00014 AGENCY: U.S. Small Business Administration. ACTION: Notice. SUMMARY: This is a notice of an Administrative declaration of a disaster for the State of Maryland dated 12/09/2010. Incident: Severe Storms and...

  2. Retention, Graduation and Transfer Rates at Maryland Community Colleges.

    ERIC Educational Resources Information Center

    Maryland State Higher Education Commission, Annapolis.

    Of the 11,770 new full-time freshman matriculating at Maryland community colleges in fall 1998, 22.9% transferred to a Maryland public four-year college, 8.2% graduated and did not transfer, and 10.5% were still enrolled in a Maryland community college four years later. The combined four-year transfer and community college graduation rate of 31.1%…

  3. [Activities of Goddard Earth Sciences and Technology Center, Maryland University

    NASA Technical Reports Server (NTRS)

    2003-01-01

    The Goddard Space Flight Center (GSFC) is recognized as a world leader in the application of remote sensing and modeling aimed at improving knowledge of the Earth system. The Goddard Earth Sciences Directorate plays a central role in NASA's Earth Observing System and the U.S. Global Change Research Program. Goddard Earth Sciences and Technology (GEST) is organized as a cooperative agreement with the GSFC to promote excellence in the Earth sciences, and is a consortium of universities and corporations (University of Maryland Baltimore County, Howard University, Hampton University, Caelum Research Corporation and Northrop Grumman Corporation). The aim of this new program is to attract and introduce promising students in their first or second year of graduate studies to Oceanography and Earth system science career options through hands-on instrumentation research experiences on coastal processes at NASA's Wallops Flight Facility on the Eastern Shore of Virginia.

  4. The difference between the potentiometric surfaces of the Magothy Aquifer of September 1975 and September 1995 in southern Maryland

    USGS Publications Warehouse

    Curtin, Stephen E.; Andreasen, David C.; Mack, Frederick K.

    1996-01-01

    A map showing the net change in the poentiometric surface of the Magothy aquifer in the Magothy Formation of Cretaceous age in southern Maryland from September 1975 to September 1995 was based on water-level measurements in 67 wells. The map shows that the decline of the potentiometric surface during the 20-year period ranged from 2 to 21 feet in the northernmost part of the study area. The decline was greater than 40 feet in parts of southern Prince Georges County, 75 feet at Waldorf, and 28 feet at the Chalk Point powerplant.

  5. Maryland Child Care Choices Study: Changes in Child Care Arrangements of Young Children in Maryland. Publication #2014-57

    ERIC Educational Resources Information Center

    Krafft, Caroline; Davis, Elizabeth E.; Tout, Kathryn

    2014-01-01

    The purpose of this series is to summarize key findings and implications from the Maryland Child Care Choices study, a longitudinal survey of parents who were applying for Temporary Assistance for Needy Families (TANF) in 2011. Families in the Maryland Child Care Choices study had at least one child age six or younger and lived in one of the…

  6. Potentiometric surface of the Magothy Aquifer in southern Maryland, September 1991

    USGS Publications Warehouse

    Curtin, Stephen E.; Andreasen, D.C.; Mack, Frederick K.

    1993-01-01

    A map showing the potentiometric surface of the Magothy aquifer in the Magothy Formation of Cretaceous age in southern Maryland during September 1991 was prepared from water levels measured in 89 wells. The potentiometric surface was highest near the northwestern boundary and outcrop area of the aquifer in topographically high areas of Anne Arundel and Prince Georges Counties. Regionally, the potentiometric surface sloped gently downward toward the southeast, and the local gradients were directed toward the centers of 3 cones of depression that have developed in response to pumping. These cones were centered around well fields in the Annapolis, Waldorf, and Chalk Point areas. Groundwater levels were more than 50 feet below sea level in the Waldorf area, nearly 50 feet below sea level at Chalk Point, and greater than 10 feet below sea level near Annapolis.

  7. Potentiometric Surface of the Magothy Aquifer in Southern Maryland, September 2002

    USGS Publications Warehouse

    Curtin, Stephen E.; Andreasen, David C.; Wheeler, Judith C.

    2003-01-01

    This report presents a map showing the potentiometric surface of the Magothy aquifer in the Magothy Formation of Upper Cretaceous age in Southern Maryland during September 2002. The map is based on water-level measurements in 79 wells. The highest measured water level was 83 feet above sea level near the northern boundary and outcrop area of the aquifer in the north-central part of Anne Arundel County. The potentiometric surface declined towards the south and east. Local gradients were directed toward the centers of two cones of depression that developed in response to pumping. These cones of depression were centered around well fields in the Waldorf area and at the Chalk Point power plant. Measured ground-water levels were as low as 81 feet below sea level in the Waldorf area and 75 feet below sea level at Chalk Point.

  8. Potentiometric surface of the Magothy Aquifer in southern Maryland, September 1994

    USGS Publications Warehouse

    Curtin, Stephen E.; Mack, Frederick K.; Andreasen, David C.

    1995-01-01

    A map showing the potentiometric surface of the Magothy aquifer in the Magothy Formation of Cretaceous age in southern Maryland during September 1994 was prepared from water levels measured in 85 wells. The potentiometric surface was highest near the northwestern boundary and outcrop area of the aquifer in topographically high areas of Anne Arundel and Prince Georges Counties. Regionally, the potentiometric surface sloped gently downward toward the southeast, and the local gradients were directed toward the centers of three cones of depression that have developed in response to pumping. These cones were centered around well fields in the Annapolis, Waldorf, and Chalk Point areas. Ground-water levels were as low as 60 feet below sea level in the Waldorf area, more than 45 feet below sea level at Chalk Point, and almost 15 feet below sea level near Annapolis.

  9. Potentiometric Surface of the Magothy Aquifer in Southern Maryland, September 1995

    USGS Publications Warehouse

    Curtin, Stephen E.; Andreasen, David C.; Mack, Frederick K.

    1996-01-01

    A map showing the potentiometric surface of the Magothy aquifer in the Magothy Formation of Cretaceous age in southern Maryland during September 1995 was prepared from water-level measurements in 92 wells. The potentiometric surface was highest near the northwestern boundaryand outcrop area of the aquifer in topographically high areas of Anne Arundel and Prince Georges Counties. Regionally, the potentiometric surface sloped gently downward towards the southeast and the local gradients were directed toward the centers of three cones of depression that have developed in response to pumping. These cones were centeredaround well fields in the Annapolis, Waldorf, and Chalk Point areas. Ground-water levels were as low as 63 feet below sea level in the Waldorf area, more than 50 feet below sea level at Chalk Point, and almost 20 feet below sea level near Annapolis.

  10. Potentiometric Surface of the Patuxent Aquifer in Southern Maryland, September 2007

    USGS Publications Warehouse

    Curtin, Stephen E.; Andreasen, David C.; Staley, Andrew W.

    2009-01-01

    This report presents a map showing the potentiometric surface of the Patuxent aquifer in the Patuxent Formation of Early Cretaceous age in Southern Maryland during September 2007. The map is based on water-level measurements in 41 wells. The highest measured water level was 165 feet above sea level near the northwestern boundary and in the outcrop area of the aquifer in northern Prince George's County. From this area, the potentiometric surface declined south towards well fields at Glen Burnie, Bryans Road, the Morgantown power plant, and the Chalk Point power plant. The measured ground-water levels were 81 feet below sea level at Glen Burnie, 47 feet below sea level southwest of Bryans Road, 27 feet below sea level at the Morgantown power plant, and 24 feet below sea level at the Chalk Point power plant.

  11. Maryland's Successful Campaign to Increase Library Funding

    ERIC Educational Resources Information Center

    Baykan, Mary

    2006-01-01

    This article explains how the Maryland public library community used data from a citizen poll to support increases in government funding. With a major grant from the Division of Library Development Services (the official name for the Maryland state library), the public library community hired a nationally known pollster, Potomac, Inc., to conduct…

  12. Maryland 2000: Journal of the Maryland Association for Institutional Research.

    ERIC Educational Resources Information Center

    Clagett, Craig A., Ed.

    1991-01-01

    This journal chronicles a sample of the papers and presentations delivered during previous annual meetings of the Maryland Association for Institutional Research on the fifth anniversary of that association. A first paper, one from the first annual meeting in 1987 titled "Environmental Scanning: Assessing Local Business Training Needs"…

  13. Photocopy of postcard (original in Picture Group 800, Connecticut State ...

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

    Photocopy of postcard (original in Picture Group 800, Connecticut State Library, Hartford, Connecticut), C.G. Talbot, publisher, Putnam, Conn., No. 1478. Postmarked 1905. Grammar School, Putnam, Conn. - Israel Putnam School, School & Oak Streets, Putnam, Windham County, CT

  14. U.S. History and Modern World History Courses for English Speakers of Other Languages in Montgomery County Public Schools

    ERIC Educational Resources Information Center

    Zhao, Huafang; Wade, Julie

    2014-01-01

    The Office of Shared Accountability (OSA) in Montgomery County (Maryland) Public Schools (MCPS) examined academic performance of English for Speakers of Other Languages (ESOL) students in U.S. History and Modern World History courses, as well as the course sequence in ESOL U.S. History and Modern World History. In MCPS, students who are not ESOL…

  15. A Portrait of School District Crisis Management: Leadership Choices in Montgomery County during the Sniper Shootings of October 2002

    ERIC Educational Resources Information Center

    Porter, Brian Joseph

    2010-01-01

    The actions of two assailants who shot and killed 10 people and wounded three others, including a student, in the region around Washington, D.C., in October 2002, provides the backdrop for a qualitative study of the emergency response by school district leaders in Montgomery County, Maryland. The study explores and describes the experiences of the…

  16. Children's Access to Public Library Services: Prince George's County Memorial Public Library, Maryland, 1980.

    ERIC Educational Resources Information Center

    Gerhardt, Lillian N.

    1981-01-01

    Evaluates the Prince George's County Memorial Public Library's approach to providing access to its services for children, and examines policies, regulations, practices, and conditions that affect such access. Six references are cited. (FM)

  17. Trends in family ratings of experience with care and racial disparities among Maryland nursing homes.

    PubMed

    Li, Yue; Ye, Zhiqiu; Glance, Laurent G; Temkin-Greener, Helena

    2014-07-01

    Providing equitable and patient-centered care is critical to ensuring high quality of care. Although racial/ethnic disparities in quality are widely reported for nursing facilities, it is unknown whether disparities exist in consumer experiences with care and how public reporting of consumer experiences affects facility performance and potential racial disparities. We analyzed trends of consumer ratings publicly reported for Maryland nursing homes during 2007-2010, and determined whether racial/ethnic disparities in experiences with care changed during this period. Multivariate longitudinal regression models controlled for important facility and county characteristics and tested changes overall and by facility groups (defined based on concentrations of black residents). Consumer ratings were reported for: overall care; recommendation of the facility; staff performance; care provided; food and meals; physical environment; and autonomy and personal rights. Overall ratings on care experience remained relatively high (mean=8.3 on a 1-10 scale) during 2007-2010. Ninety percent of survey respondents each year would recommend the facility to someone who needs nursing home care. Ratings on individual domains of care improved among all nursing homes in Maryland (P<0.01), except for food and meals (P=0.827 for trend). However, site-of-care disparities existed in each year for overall ratings, recommendation rate, and ratings on all domains of care (P<0.01 in all cases), with facilities more predominated by black residents having lower scores; such disparities persisted over time (P>0.2 for trends in disparities). Although Maryland nursing homes showed maintained or improved consumer ratings during the first 4 years of public reporting, gaps persisted between facilities with high versus low concentrations of minority residents.

  18. Poplar Island Environmental Restoration Project: Challenges in waterbird restoration on an island in Chesapeake Bay

    USGS Publications Warehouse

    Erwin, R.M.; Miller, J.; Reese, J.G.

    2007-01-01

    At 460 hectares, the Paul Sarbanes Environmental Restoration Project at Poplar Island, Talbot County, Maryland, represents the largest 'beneficial use' dredged material project of the U. S. Army Corps of Engineers (a cooperative project with Maryland Port Administration). Begun in 1998, the 15-year restoration project will ultimately consist of roughly 220 ha of uplands and 220 ha of tidal wetland habitats, with limited areas of dike roads, perimeter riprap, and unvegetated mudflats. Wetland restoration began in one small section (or 'cell') in 2002, but not all cells will be filled with dredged material until at least 2013. As a major objective of the restoration, six species of waterbirds were identified as 'priority species' for Chesapeake Bay: American black duck (Anas rubripes), snowy egret (Egretta thula), cattle egret (Bubulcus ibis), osprey (Pandion haliaetus), common tern (Sterna hirundo), and least tern (S. antillarum). Monitoring of nesting activities of these species from 2002 to 2005 indicated that all species except black ducks colonized the site rapidly. More than 800 pairs of common terns nested in 2003 to 2004. Because of predation by red fox (Vulpes vulpes) and great horned owl (Bubo virginianus), reproductive success was very low for the terns. Trapping was effective in removing the foxes, and other controls have been applied to opportunistic nesting species including herring gulls (Larus argentatus) and Canada geese (Branta canadensis). An effective public education program on the island has helped address concerns about animal control.

  19. Potentiometric surface of the Magothy Aquifer in southern Maryland during the fall of 1987

    USGS Publications Warehouse

    Mack, Frederick K.; Andreasen, David C.; Curtin, Stephen E.; Wheeler, Judith C.

    1989-01-01

    A map showing the potentiometric surface of the Magothy aquifer in the Cretaceous Magothy Formation in southern Maryland during the fall of 1987 was prepared by using water level measurements in 85 observation wells. The potentiometric surface was highest near the northwestern boundary and outcrop area of the aquifer in topographically high locations of Anne Arundel and Prince Georges Counties. The hydraulic gradient in the study area was generally southeastward or toward the centers of three cones of depression which have developed in response to pumping stresses. These cones formed around well fields in the Annapolis, Waldorf, and Chalk Point areas. The potentiometric surface of the Magothy aquifer was more than 40 ft below sea level in parts of the Waldorf and Chalk Point areas. (USGS)

  20. Maryland Reading First.

    ERIC Educational Resources Information Center

    Maryland State Dept. of Education, Baltimore.

    In years past, Maryland has provided little guidance toward adoption and implementation of Scientifically Based Reading Research (SBRR) programs. Only recently, with the implementation of the Comprehensive School Reform Demonstration program and the Reading Excellence Act (REA) program, have schools or local education agencies been required to…

  1. 1. Photocopy of photograph (original print located in Pope & ...

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

    1. Photocopy of photograph (original print located in Pope & Talbot Archives. Port Gamble, WA.) Unknown Photographer, Unknown Date. View of Walker-Ames House, house no. 1, facing southwest. - Walker-Ames House, Rainier Avenue, Port Gamble, Kitsap County, WA

  2. Evaluation of Maryland abutment scour equation through selected threshold velocity methods

    USGS Publications Warehouse

    Benedict, S.T.

    2010-01-01

    The U.S. Geological Survey, in cooperation with the Maryland State Highway Administration, used field measurements of scour to evaluate the sensitivity of the Maryland abutment scour equation to the critical (or threshold) velocity variable. Four selected methods for estimating threshold velocity were applied to the Maryland abutment scour equation, and the predicted scour to the field measurements were compared. Results indicated that performance of the Maryland abutment scour equation was sensitive to the threshold velocity with some threshold velocity methods producing better estimates of predicted scour than did others. In addition, results indicated that regional stream characteristics can affect the performance of the Maryland abutment scour equation with moderate-gradient streams performing differently from low-gradient streams. On the basis of the findings of the investigation, guidance for selecting threshold velocity methods for application to the Maryland abutment scour equation are provided, and limitations are noted.

  3. Test well DO-CE 88 at Cambridge, Dorchester County, Maryland

    USGS Publications Warehouse

    Trapp, Henry; Knobel, LeRoy L.; Meisler, Harold; Leahy, P. Patrick

    1984-01-01

    Test well DO-CE 88 at Cambridge, Maryland, penetrated 3,299 feet of unconsolidated Quaternary, Tertiary and Cretaceous sediments and bottomed in quartz-monzonite gneiss. The well was drilled to provide data for a study of the aquifer system of the northern Atlantic Coastal Plain. Twenty-one core samples were collected. Six sand zones were tested for aquifer properties and sampled for ground-water chemistry. Point-water heads were measured at seven depths. Environmental heads (which ranged from - 18.33 to + 44.16 feet relative to sea level)indicate an upward component of flow. A temperature log showed a maximum temperature of 41.9 degrees Celsius and a mean temperature gradient of 0.00838 degrees Celsius per foot. The water analyses delineated the freshwater-saltwater transition zone between 2,650 and 3,100 feet. The ground water changes progressively downward from a sodium bicarbonate to a sodium chloride character. Clays in the analyzed core samples belong to the montmorillonite and kaolinite groups, and mean cation exchange capacity ranged from 8.3 to 38.9 milliequivalents per 100 grams. Vertical and horizontal hydraulic conductivities measured in cores ranged from 1.5 x 10 6 to 1.3 feet per day and from 7.3 x 10 -6 to 1.3 feet per day, respectively, but the most permeable sands were not cored. Porosity was 1.5 percent in the quartz monzonite bedrock and ranged from 22.4 to 41 percent in the overlying sediments. Transmissivities from aquifer tests ranged from 25 to 850 feet squared per day; horizontal hydraulic conductivities ranged from.2.5 to 85 feet squared per day, and intrinsic permeabilities ranged from 0.8 to 23 micrometers squared. Fossils identified in core samples include palynomorphs, dinoflagellates, and foraminifers.

  4. Modeling cover Crop Effectiveness on Maryland's Eastern Shore

    USDA-ARS?s Scientific Manuscript database

    Cover cropping has become a widely used conservation practice on Maryland’s Eastern shore. It is one of the main practices funded by the Maryland Department of Agriculture’s (MDA) Maryland Agricultural Water Quality Cost Share (MACS) program. The major benefits of this practice include reduction of ...

  5. Potentiometric Surface of the Patuxent Aquifer in Southern Maryland, September 2009

    USGS Publications Warehouse

    Curtin, Stephen E.; Andreasen, David C.; Staley, Andrew W.

    2010-01-01

    This report presents a map showing the potentiometric surface of the Patuxent aquifer in the Patuxent Formation of Early Cretaceous age in Southern Maryland during September 2009. The map is based on water-level measurements in 42 wells. The highest measured water level was 169 feet above sea level in the outcrop area of the aquifer in northern Prince George's County. From this area, the potentiometric surface declined south towards well fields at Glen Burnie, Bryans Road, the Morgantown power plant, and the Chalk Point power plant. The measured groundwater levels were 78 feet below sea level at Glen Burnie, 56 feet below sea level at Bryans Road, 29 feet below sea level at the Morgantown power plant, and 28 feet below sea level at the Chalk Point power plant. The map also shows well yield in gallons per day for 2008 at wells or well fields.

  6. Potentiometric Surface of the Aquia Aquifer in Southern Maryland, September 2007

    USGS Publications Warehouse

    Curtin, Stephen E.; Andreasen, David C.; Staley, Andrew W.

    2009-01-01

    This report presents a map showing the potentiometric surface of the Aquia aquifer in the Aquia Formation of Paleocene age in Southern Maryland during September 2007. The map is based on water-level measurements in 85 wells. The highest measured water level was 50 feet above sea level near the northern boundary and outcrop area of the aquifer in the central part of Anne Arundel County, and was below sea level just south of this area and in the remainder of the study area. The hydraulic gradient increased southeastward toward an extensive cone of depression around well fields at Lexington Park and Solomons Island. A water level measured west of the Cheasapeake Beach area has declined to 57 feet below sea level due to increased withdrawals. The lowest water level measured was 162 feet below sea level at the center of a cone of depression at Lexington Park.

  7. Potentiometric surface map of the Magothy aquifer in southern Maryland, September, 2003

    USGS Publications Warehouse

    Curtin, Stephen E.; Andreasen, David C.; Wheeler, Judith C.

    2005-01-01

    This report presents a map showing the potentiometric surface of the Magothy aquifer in the Magothy Formation of Upper Cretaceous age in Southern Maryland during September 2002. The map is based on water-level measurements in 79 wells. The highest measured water level was 83 feet above sea level near the northern boundary and outcrop area of the aquifer in the north-central part of Anne Arundel County. The potentiometric surface declined towards the south and east. Local gradients were directed toward the centers of two cones of depression that developed in response to pumping. These cones of depression were centered around well fields in the Waldorf area and at the Chalk Point power plant. Measured ground-water levels were as low as 81 feet below sea level in the Waldorf area and 75 feet below sea level at Chalk Point.

  8. Maryland Learning Outcomes: Maryland School Performance Assessment Program for Social Studies.

    ERIC Educational Resources Information Center

    Maryland State Dept. of Education, Baltimore.

    This document outlines six learning outcomes for social studies students in grades PreK-8 in Maryland schools: (1) "Social Studies Skills" (students will demonstrate an understanding of historical and current events using chronological and spatial thinking, develop historical interpretations, and frame questions that include collecting…

  9. The Difference Between the Potentiometric Surfaces of the Upper Patapsco Aquifer in Southern Maryland, September 1990 and September 2007

    USGS Publications Warehouse

    Curtin, Stephen E.; Andreasen, David C.; Staley, Andrew W.

    2009-01-01

    This report presents a map showing the change in the potentiometric surface of the upper Patapsco aquifer in the Patapsco Formation of Early Cretaceous age in Southern Maryland for September 1990 and September 2007. The map, based on water-level measurements in 33 wells, shows that during the 17-year period, the change in the potentiometric surface ranged from zero at the edge of the outcrop area in northern Anne Arundel County to a decline of 28 feet at Crofton Meadows, 38 feet at Arnold, 36 feet at Waldorf, 35 feet at the Chalk Point power plant, and 40 feet at Lexington Park.

  10. Maryland and SREB

    ERIC Educational Resources Information Center

    Southern Regional Education Board (SREB), 2009

    2009-01-01

    The Southern Regional Education Board (SREB) is a nonprofit organization that works collaboratively with Maryland and 15 other member states to improve education at every level--from pre-K to postdoctoral study--through many effective programs and initiatives. SREB's "Challenge to Lead" Goals for Education, which call for the region to…

  11. 1. Photocopy of photograph (original print #17 located in ...

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

    1. Photocopy of photograph (original print #17 - located in Pope & Talbot Archives. Port Gamble, WA). Unknown Photographer, September 1906. View of St. Paul's Episcopal Church, facing southwest from Rainier Avenue. - St. Paul's Episcopal Church, Rainier Avenue, Port Gamble, Kitsap County, WA

  12. Single-shot Z(eff) dense plasma diagnostic through simultaneous refraction and attenuation measurements with a Talbot-Lau x-ray moiré deflectometer.

    PubMed

    Valdivia, M P; Stutman, D; Finkenthal, M

    2015-04-01

    The Talbot-Lau x-ray moiré deflectometer is a powerful plasma diagnostic capable of delivering simultaneous refraction and attenuation information through the accurate detection of x-ray phase shift and intensity. The diagnostic can provide the index of refraction n=1-δ+iβ of an object (dense plasma, for example) placed in the x-ray beam by independently measuring both δ and β, which are directly related to the electron density n(e) and the attenuation coefficient μ, respectively. Since δ and β depend on the effective atomic number Z(eff), a map can be obtained from the ratio between phase and absorption images acquired in a single shot. The Talbot-Lau x-ray moiré deflectometer and its corresponding data acquisition and processing are briefly described to illustrate how the above is achieved; Z(eff) values of test objects within the 4-12 range were obtained experimentally through simultaneous refraction and attenuation measurements. We show that Z(eff) mapping of objects does not require previous knowledge of sample length or shape. The determination of Z(eff) from refraction and attenuation measurements with moiré deflectometry could be of high interest to various domains of high energy density research, such as shocked materials and inertial confinement fusion experiments, as well as material science and nondestructive testing.

  13. Children Entering School Ready to Learn: 2010-2011 Maryland Model for School Readiness

    ERIC Educational Resources Information Center

    Maryland State Department of Education, 2009

    2009-01-01

    The report shares what everyone has learned from the 2010-2011 Maryland Model for School Readiness (MMSR) data about the school readiness of Maryland's children: statewide, by subgroups, and for each of Maryland's 24 local jurisdictions. Some of the highlights are: (1) The percentage of Maryland kindergarteners fully ready to start school…

  14. FROM THE MOUNTAINS TO THE SEA: THE STATE OF MARYLAND'S FRESHWATER STREAMS

    EPA Science Inventory

    The Maryland Biological Stream Survey, conducted by the Maryland Department of Natural Resources, sampled about 1,000 randomly-selected sites on first through third order freshwater streams throughout Maryland from 1995 to 1997. Biota (fish, benthic macroinvertebrates, herpetofau...

  15. Maryland's high cancer mortality rate: a review of contributing demographic factors.

    PubMed

    Freedman, D M

    1999-01-01

    For many years, Maryland has ranked among the top states in cancer mortality. This study analyzed mortality data from the National Center for Health Statistics (CDC-Wonder) to help explain Maryland's cancer rate and rank. Age-adjusted rates are based on deaths per 100,000 population from 1991 through 1995. Rates and ranks overall, and stratified by age, are calculated for total cancer mortality, as well as for four major sites: lung, breast, prostate, and colorectal. Because states differ in their racial/gender mix, race/gender rates among states are also compared. Although Maryland ranks seventh in overall cancer mortality, its rates and rank by race and gender subpopulation are less high. For those under 75, white men ranked 26th, black men ranked 20th, and black and white women ranked 12th and 10th, respectively. Maryland's overall rank, as with any state, is a function of the rates of its racial and gender subpopulations and the relative size of these groups in the state. Many of the disparities between Maryland's overall high cancer rank and its lower rank by subpopulation also characterize the major cancer sites. Although a stratified presentation of cancer rates and ranks may be more favorable to Maryland, it should not be used to downplay the attention cancer mortality in Maryland deserves.

  16. Race to the Top - Early Learning Challenge: 2015 Annual Performance Report. Maryland

    ERIC Educational Resources Information Center

    Race to the Top - Early Learning Challenge, 2016

    2016-01-01

    This Race to the Top - Early Learning Challenge (RTT-ELC) annual performance report for the year 2015 describes Maryland's accomplishments, lessons learned, challenges, and strategies Maryland will implement to address those challenges. Maryland's remarkable progress in increasing participation in their tiered quality rating and improvement…

  17. University of Maryland MRSEC - Collaborations

    Science.gov Websites

    . University of Maryland Materials Research Science and Engineering Center Home About Us Leadership , National Nanotechnology Lab, Neocera, NIST, Rowan University, Rutgers University, Seagate, Tokyo Tech

  18. An x-ray backlit Talbot-Lau deflectometer for high-energy-density electron density diagnostics.

    PubMed

    Valdivia, M P; Stutman, D; Stoeckl, C; Theobald, W; Mileham, C; Begishev, I A; Bromage, J; Regan, S P

    2016-02-01

    X-ray phase-contrast techniques can measure electron density gradients in high-energy-density plasmas through refraction induced phase shifts. An 8 keV Talbot-Lau interferometer consisting of free standing ultrathin gratings was deployed at an ultra-short, high-intensity laser system using K-shell emission from a 1-30 J, 8 ps laser pulse focused on thin Cu foil targets. Grating survival was demonstrated for 30 J, 8 ps laser pulses. The first x-ray deflectometry images obtained under laser backlighting showed up to 25% image contrast and thus enabled detection of electron areal density gradients with a maximum value of 8.1 ± 0.5 × 10(23) cm(-3) in a low-Z millimeter sized sample. An electron density profile was obtained from refraction measurements with an error of <8%. The 50 ± 15 μm spatial resolution achieved across the full field of view was found to be limited by the x-ray source-size, similar to conventional radiography.

  19. Noiseless intensity amplification of repetitive signals by coherent addition using the temporal Talbot effect

    PubMed Central

    Maram, Reza; Van Howe, James; Li, Ming; Azaña, José

    2014-01-01

    Amplification of signal intensity is essential for initiating physical processes, diagnostics, sensing, communications and measurement. During traditional amplification, the signal is amplified by multiplying the signal carriers through an active gain process, requiring the use of an external power source. In addition, the signal is degraded by noise and distortions that typically accompany active gain processes. We show noiseless intensity amplification of repetitive optical pulse waveforms with gain from 2 to ~20 without using active gain. The proposed method uses a dispersion-induced temporal self-imaging (Talbot) effect to redistribute and coherently accumulate energy of the original repetitive waveforms into fewer replica waveforms. In addition, we show how our passive amplifier performs a real-time average of the wave-train to reduce its original noise fluctuation, as well as enhances the extinction ratio of pulses to stand above the noise floor. Our technique is applicable to repetitive waveforms in any spectral region or wave system. PMID:25319207

  20. Effects of environmental pollutants on Connecticut and Maryland ospreys

    USGS Publications Warehouse

    Wiemeyer, Stanley N.; Spitzer, P.R.; Krantz, W.C.; Lamont, T.G.; Cromartie, E.

    1975-01-01

    Osprey (Pandion haliaetus) eggs were exchanged between Connecticut and Maryland osprey nests in 1968 and 1969 to test the hypothesis that the decline in reproductive success of Connecticut ospreys was caused by something within the external environment of the eggs. Incubation of 30 Connecticut osprey eggs by Maryland ospreys did not improve the hatching rate. Forty-five Maryland osprey eggs incubated by Connecticut ospreys hatched at their normal rate. The results of the egg exchanges and associated observations indicated that the most probable cause of the poor reproduction of Connecticut ospreys ,was related to contamination of the birds and their eggs. Residues of DDT and its metabolites, dieldrin, and PCBs were generally higher in fish from Connecticut than from Maryland. During 1968-69, average residues (on a nest basis) in osprey eggs from Maryland were: p,p'-DDE, 2.4 ppm; dieldrin, 0.25 ppm; PCB, 2.6 ppm. Average residues in eggs from Connecticut for the same period were: p,p'DDE, 8.9 ppm; dieldrin, 0.61 ppm; PCB, 15 ppm. There were no major changes in residue content of Connecticut eggs collected in 1964 compared with those collected in 1968-B9. One Connecticut osprey had a concentration of dieldrin in its brain which was in the lethal range. The average shell thickness of recently collected osprey eggs from Connecticut had declined 18 percent, and those from Maryland had declined 10 percent from pre-1947 norms. Dieldrin, DDE, and PCB are three environmental pollutants that have most likely been important factors in the greatly reduced reproductive success and rapid population decline of Connecticut ospreys.

  1. 76 FR 53021 - Public Hearing and Commission Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-24

    ... Water Supply System, Halls Cross Roads District, Harford County, Md. Modification to conditions of the... Baltimore. Project Facility: Maryland Water Supply System, Halls Cross Roads District, Harford County, Md... Facility: Maryland Water Supply System, Halls Cross Roads District, Harford County, Md. Modification to...

  2. Maryland's Forests 2008

    Treesearch

    T.W. Lister; J.L Perdue; C.J. Barnett; B.J. Butler; S.J. Crocker; G.M. Domke; D. Griffith; M.A. Hatfield; C.M. Kurtz; A.J. Lister; R.S. Morin; W.K. Moser; M.D. Nelson; C.H. Perry; R.J. Piva; R. Riemann; R. Widmann; C.W. Woodall

    2011-01-01

    The first full annual inventory of Maryland's forests reports approximately 2.5 million acres of forest land, which covers 40 percent of the State's land area and with a total volume of more than 2,100 cubic feet per acre. Nineteen percent of the growing-stock volume is yellow-poplar, followed by red maple (13 percent) and loblolly pine (10 percent). All...

  3. Goddard Space Flight Center: 1994 Maryland/GSFC Earth and Environmental Science Teacher Ambassador Program

    NASA Technical Reports Server (NTRS)

    Latham, James

    1995-01-01

    The Maryland/Goddard Space Flight Center (GSFC) Earth and Environmental Science Teacher Ambassador Program was designed to enhance classroom instruction in the Earth and environmental science programs in the secondary schools of the state of Maryland. In October 1992, more than 100 school system administrators from the 24 local Maryland school systems, the Maryland State Department of Education, and the University of Maryland met with NASA GSFC scientists and education officers to propose a cooperative state-wide secondary school science teaching enhancement initiative.

  4. Maryland Public Charter Schools Model Policy and Resource Guide

    ERIC Educational Resources Information Center

    Maryland State Department of Education, 2005

    2005-01-01

    This document is designed to guide local boards of education and school systems in Maryland in assisting individuals and organizations interested in establishing public charter schools. This guide is organized into the following parts: (1) Maryland Public Charter Schools Act; (2) Organizing to Assist Public Charter School Development; (3)…

  5. Maryland Water Resources Research Center

    Science.gov Websites

    your links and references accordingly. Celebrating Soil 2015 Maryland Water Symposium Monday, Dec. 7 reception, followed by a screening of the award-winning documentary, "Symphony of the Soil". Click

  6. 40 CFR 81.321 - Maryland.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Washington Area Montgomery County (part) Election Districts 4, 7, 13 Attainment Prince George's County (part...) Unclassifiable/Attainment Montgomery County (part) Remainder of county Prince George's County (part) Remainder of... Frederick County Nonattainment 3/25/03 Severe Montgomery County Nonattainment 3/25/03 Severe Prince George's...

  7. Is It Time to Rethink Teacher Pensions in Maryland?

    ERIC Educational Resources Information Center

    Podgursky, Michael

    2006-01-01

    Many states are struggling to finance under-funded teacher pension systems as well as recruit and retain a high-quality teaching workforce. This paper compares Maryland's former (prior to Spring, 2006) teacher pension system to those in Pennsylvania and several other states. On the basis of simple replacement rates, the former Maryland state plan…

  8. Maryland's Model Policy to Address Bullying, Harassment, or Intimidation

    ERIC Educational Resources Information Center

    Maryland State Department of Education, 2016

    2016-01-01

    In accordance with the provisions of Section 7-424.1 of the Education Article of the Annotated Code of Maryland, the Maryland State Board of Education has developed and adopted a Model Policy to address bullying, harassment, or intimidation. This report presents the Model Policy, which is organized into the following eight points: (1) Prohibition…

  9. The Ukrainians of Maryland.

    ERIC Educational Resources Information Center

    Basarab, Stephen; And Others

    This book is an in depth study of Ukrainian Americans in Maryland. The book was published now lest educators, governmental officials, curriculum planners, and librarians continue certain stances of "selected inattention" about Ukrainians and other East Europeans in American studies. Chapter 1 examines the European background of the…

  10. Potentiometric surface of the Upper Patapsco aquifer in southern Maryland, September 2009

    USGS Publications Warehouse

    Curtin, Stephen E.; Andreasen, David C.; Staley, Andrew W.

    2010-01-01

    This report presents a map showing the potentiometric surface of the upper Patapsco aquifer in the Patapsco Formation of Early Cretaceous age in Southern Maryland during September 2009. The map is based on water-level measurements in 65 wells. The highest measured water level was 118 feet above sea level near the northern boundary and outcrop area of the aquifer in northern Anne Arundel County. From this area, the potentiometric surface declined to the south toward a well field in the Annapolis-Arnold area, and from all directions toward three additional cones of depression. These cones are located in the Waldorf-La Plata area, Chalk Point, and the Leonardtown-Lexington Park area. The lowest measured groundwater levels were 26 feet below sea level at Annapolis, 108 feet below sea level south of Waldorf, 60 feet below sea level at Chalk Point, and 83 feet below sea level at Leonardtown. The map also shows well yield in gallons per day for 2008 at wells or well fields.

  11. The Maryland Division of Correction hospice program.

    PubMed

    Boyle, Barbara A

    2002-10-01

    The Maryland Division of Correction houses 24,000 inmates in 27 geographically disparate facilities. The inmate population increasingly includes a frail, elderly component, as well as many inmates with chronic or progressive diseases. The Division houses about 900 human immunodeficiency virus (HIV)-positive detainees, almost one quarter with an acquired immune deficiency syndrome (AIDS) diagnosis. A Ryan White Special Project of National Significance (SPNS) grant and the interest of a community hospice helped transform prison hospice from idea to reality. One site is operational and a second site is due to open in the future. Both facilities serve only male inmates, who comprise more than 95% of Maryland's incarcerated. "Medical parole" is still the preferred course for terminally ill inmates; a number have been sent to various local community inpatient hospices or released to the care of their families. There will always be some who cannot be medically paroled, for whom hospice is appropriate. Maryland's prison hospice program requires a prognosis of 6 months or less to live, a do-not-resuscitate (DNR) order and patient consent. At times, the latter two of these have been problematic. Maintaining the best balance between security requirements and hospice services to dying inmates takes continual communication, coordination and cooperation. Significant complications in some areas remain: visitation to dying inmates by family and fellow prisoners; meeting special dietary requirements; what role, if any, will be played by inmate volunteers. Hospice in Maryland's Division of Correction is a work in progress.

  12. Vibrio infections and surveillance in Maryland, 2002-2008.

    PubMed

    Jones, Erin H; Feldman, Katherine A; Palmer, Amanda; Butler, Erin; Blythe, David; Mitchell, Clifford S

    2013-01-01

    Vibrio is a naturally occurring waterborne pathogen with potential occupational, recreational, and commercial impacts. During the last 15 years in the U.S. and in Maryland, the incidence of vibriosis has increased. Due to the increase in cases in Maryland, warming water temperatures, and public concern about human health effects resulting from exposure to the Chesapeake Bay, we reviewed cases of vibriosis and evaluated the Vibrio surveillance system in Maryland for timeliness and data quality, attributes necessary for successful outbreak investigation and illness prevention. The evaluation included (1) informal qualitative surveys of state and local personnel who report and manage Vibrio cases and (2) a review of Vibrio surveillance data from 2002 through 2008 for data quality and timeliness of the system. From 2002 to 2008, 188 laboratory-confirmed cases of vibriosis were reported in Maryland with an annual average of 27 cases. The species of Vibrio that were most frequently responsible for infection, regardless of clinical presentation, were V. parahaemolyticus (43.6%), V. vulnificus (23.9%), V. alginolyticus (9.6%), and non-toxigenic V. cholerae (9.0%). The case fatality rate fluctuated during the study period, but the number of cases increased. The surveillance system in Maryland is flexible and captures cases of vibriosis where specimens were collected for testing; however, the system may not adequately capture mild, self-limiting infections. Better integration of data collection for clinical, laboratory, and environmental information and improved completion of variables for shellfish harvest or water exposure locations could improve the system. Quarterly meetings comprising surveillance, public health laboratory, and food-control personnel could direct and ensure the success of improvement efforts.

  13. 75 FR 9926 - National Register of Historic Places; Weekly Listing of Historic Properties

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-04

    ..., 12/08/09 MARYLAND Anne Arundel County Queenstown Rosenwald School, 430 Queenstown Rd., Severn, 09001060, LISTED, 12/08/09 (Rosenwald Schools of Anne Arundel County, Maryland MPS) Baltimore (Independent... Queens County Church-in-the-Gardens, The, 50 Ascan Ave., Forest Hills, 09001086, LISTED, 12/11/09...

  14. Case report: Pox in the mourning dove in Maryland

    USGS Publications Warehouse

    Locke, L.N.; Herman, C.M.; King, E.S.

    1960-01-01

    Although trichomoniasis has received attention as a cause of death among mourning doves (Zenaidura macroura),  ittle work has been done on other diseases of this species. Kossack and Hanson2 reported the occurrence of pox lesions in mourning doves in Illinois. Rosen3 reported that "pigeon pox" had caused a severe mortality in a mourning dove flock near Yreka, Siskiyou County, California. A severe outbreak of pox that occurred in a captive flock of mourning doves at the Patuxent Research Refuge further emphasizes the need for more study of this disease as a cause of dove mortality. Twenty-two mourning doves were live trapped on the Agricultural Research Center, Beltsville, Maryland, in September, 1958. The doves were examined for presence of Trichomonas gallinae and, when found to be free of trichomonads, were made the nucleus of a captive dove colony. A mourning dove that had a small, pink nodule on the left eyelid was captured on the Agricultural Research Center on September 17, 1958. The nodule was excised and the cut surface was treated with tincture of merthiolate. The dove then was added to the dove colony.

  15. Hydrogeologic setting, hydraulic properties, and ground-water flow at the O-Field area of Aberdeen Proving Ground, Maryland

    USGS Publications Warehouse

    Banks, W.S.; Smith, B.S.; Donnelly, C.A.

    1996-01-01

    The U.S. Army disposed chemical agents, laboratory materials, and unexploded ordnance at O-Field in the Edgewood area of Aberdeen Proving Ground, Maryland, from before World War II until at least the 1950's. Soil, ground water, surface water,and wetland sediments in the O-Field area were contaminated from the disposal activity. A ground-water-flow model of the O-Field area was constructed by the U.S. Geological Survey (USGS) in 1989 to simulate flow in the central and southern part of the Gunpowder Neck. The USGS began an additional study of the contamination in the O-Field area in cooperation with the U.S. Army in 1990 to (1) further define the hydrogeologic framework of the O-Field area, (2) characterize the hydraulic properties of the aquifers and confining units, and (3) define ground-water flow paths at O-Field based on the current data and simulations of ground-water flow. A water-table aquifer, an upper confining unit, and an upper confined aquifer comprise the shallow ground-water aquifer system of the O-Field area. A lower confining unit, through which ground-water movement is negligible, is considered a lower boundary to the shallow aquifer system. These units are all part of the Pleistocene Talbot Formation. The model developed in the previous study was redesigned using the data collected during this study and emphasized New O-Field. The current steady-state model was calibrated to water levels of June 1993. The rate of ground-water flow calculated by the model was approximately 0.48 feet per day (ft/d) and the rate determined from chlorofluorocarbon dates was approximately 0.39 ft/d.

  16. Maryland's Special Populations Network. A model for cancer disparities research, education, and training.

    PubMed

    Baquet, Claudia R; Mack, Kelly M; Mishra, Shiraz I; Bramble, Joy; Deshields, Mary; Datcher, Delores; Savoy, Mervin; Brooks, Sandra E; Boykin-Brown, Stephanie; Hummel, Kery

    2006-10-15

    The unequal burden of cancer in minority and underserved communities nationally and in Maryland is a compelling crisis. The Maryland Special Populations Cancer Research Network (MSPN) developed an infrastructure covering Maryland's 23 jurisdictions and Baltimore City through formal partnerships between the University of Maryland School of Medicine, University of Maryland Statewide Health Network, University of Maryland Eastern Shore, and community partners in Baltimore City, rural Eastern Shore, rural Western Maryland, rural Southern Maryland, and Piscataway Conoy Tribe and statewide American Indians. Guided by the community-based participatory framework, the MSPN undertook a comprehensive assessment (of needs, strengths, and resources available) that laid the foundation for programmatic efforts in community-initiated cancer awareness and education, research, and training. The MSPN infrastructure was used to implement successful and innovative community-based cancer education interventions and technological solutions; conduct education and promotion of clinical trials, cancer health disparities research, and minority faculty cancer research career development; and leverage additional resources for sustainability. MSPN engaged in informed advocacy among decision- and policymakers at state and national levels, and its community-based clinical trials program was recognized by the U.S. Department of Health and Human Services as a Best Practice Award. The solutions to reduce and eliminate cancer health disparities are complex and require comprehensive and focused multidisciplinary cancer health disparities research, training, and education strategies implemented through robust community-academic partnerships. Cancer 2006. (c) American Cancer Society.

  17. Juvenile Justice in Maryland.

    ERIC Educational Resources Information Center

    Vetter, Donald P.; Frederick, Charles

    This four part guide provides secondary students with information about Maryland laws, courts, and legal system. The first section examines the nature and causes of increasing involvement of youth in crime, and identifies those crimes most commonly committed by juveniles. A special section on shoplifting is included. Section II examines the nature…

  18. Preparation and Retention of the Early Childhood Care and Education Workforce in Maryland

    ERIC Educational Resources Information Center

    Klein, Elisa L.; Zheng, Xiaying; Sunderman, Gail L.; Henneberger, Angela K.; Stapleton, Laura M.; Woolley, Michael E.

    2016-01-01

    Increasing awareness of the vital developmental implications of the care and education of young children has led to efforts in Maryland to advance early childhood care and education (ECCE). To that end, Maryland has consolidated ECCE services into one division of the Maryland State Department of Education (MSDE) and developed a number of…

  19. Montgomery County Maryland

    Science.gov Websites

    information including Alternative Format Requests for Disabled Users are provided on this page. Alert Complaint Get a License or Permit Make a Payment Obtain Social Services Request Bus Information Request -menu tier. Ride On Real Time Arrival Information Requests to Discuss Property Tax Bill* Bulk Trash

  20. Study of the Supply of and Demand for Law School Graduates in Maryland.

    ERIC Educational Resources Information Center

    Maryland State Higher Education Commission, Annapolis.

    This report examined 10-year trends in applications to Maryland's two law schools (the University of Baltimore School of Law and the University of Maryland School of Law), enrollment, and the first-time passage rates of graduates on the Maryland Bar Examination. Breakdowns by gender and race are also provided. The study also explored the projected…

  1. An x-ray backlit Talbot-Lau deflectometer for high-energy-density electron density diagnostics

    DOE PAGES

    Valdivia, M. P.; Stutman, D.; Stoeckl, C.; ...

    2016-02-10

    X-ray phase-contrast techniques can measure electron density gradients in high-energy-density plasmas through refraction induced phase shifts. An 8 keV Talbot-Lau interferometer consisting of free standing ultrathin gratings was deployed at an ultra-short, high-intensity laser system using K-shell emission from a 1-30 J, 8 ps laser pulse focused on thin Cu foil targets. Grating survival was demonstrated for 30 J, 8 ps laser pulses. The first x-ray deflectometry images obtained under laser backlighting showed up to 25% image contrast and thus enabled detection of electron areal density gradients with a maximum value of 8.1 ± 0.5 × 10 23 cm ₋3more » in a low-Z millimeter sized sample. An electron density profile was obtained from refraction measurements with an error of <8%. We found the 50 ± 15 μm spatial resolution achieved across the full field of view was limited by the x-ray source-size, similar to conventional radiography.« less

  2. Forests of Maryland, 2013

    Treesearch

    T.W. Lister; S.A. Pugh

    2014-01-01

    This publication provides an overview of forest resources in Maryland based on inventories conducted by the U.S. Forest Service, Forest Inventory and Analysis (FIA) program of the Northern Research Station. Information about the national and regional FIA program is available online at http://fia.fs.fed.us. Since 2004, FIA has employed an annual inventory measuring data...

  3. Trends in Maryland's Forests

    Treesearch

    Richard H. Widmann

    2002-01-01

    Forests protect watersheds, provide opportunities for recreation and settings for aesthetic enjoyment, serve as habitat for wildlife, and produce wood and other forest products. The forests of Maryland contribute greatly to the quality of life of the State?s residents, making the Old Line State a better place in which to live. Data in this brochure are from reports...

  4. Maryland's forest resources, 2008

    Treesearch

    T.W. Lister; J. Perdue; B. Butler; C. Barnett; B. O' Connell

    2010-01-01

    This publication provides an overview of forest resource attributes for Maryland based on an annual inventory (2004-2008) conducted by the Forest Inventory and Analysis (FIA) program at the Northern Research Station of the U.S. Forest Service. These estimates, along with web-posted core tables, will be updated annually. For more information please refer to the last...

  5. Maryland's forest resources, 2011

    Treesearch

    Tonya Lister; J. Perdue

    2012-01-01

    This publication provides an overview of forest resource attributes for Maryland based on an annual inventory conducted by the Forest Inventory and Analysis (FIA) program at the Northern Research Station of the U.S. Forest Service. These estimates, along with web-posted core tables, will be updated annually. For more information please refer to page 4 of this report....

  6. Maryland's forest resources, 2012

    Treesearch

    T.W. Lister; J. Perdue

    2013-01-01

    This publication provides an overview of forest resource attributes for Maryland based on an annual inventory conducted by the Forest Inventory and Analysis (FIA) program at the Northern Research Station of the U.S. Forest Service. These estimates, along with web-posted core tables, will be updated annually. For more information please refer to page 4 of this report....

  7. Maryland's forest resources, 2010

    Treesearch

    T.W. Lister; J. Perdue

    2011-01-01

    This publication provides an overview of forest resource attributes for Maryland based on an annual inventory conducted by the Forest Inventory and Analysis (FIA) program at the Northern Research Station of the U.S. Forest Service. These estimates, along with web-posted core tables, will be updated annually. For more information please refer to page 4 of this report....

  8. Maryland's forest resources, 2009

    Treesearch

    T.W. Lister; J. Perdue; A. Lister

    2011-01-01

    This publication provides an overview of forest resource attributes for Maryland based on an annual inventory conducted by the Forest Inventory and Analysis (FIA) program at the Northern Research Station of the U.S. Forest Service. These estimates, along with web-posted core tables, will be updated annually. For more information please refer to page 4 of this report....

  9. Maryland's forest resources, 2007

    Treesearch

    T.W. Lister; J. Perdue; W. McWilliams; D. Meneguzzo; C. Barnett; B. O’Connell

    2010-01-01

    This publication provides an overview of forest resource attributes for Maryland based on an annual inventory (2004-2007) conducted by the Forest Inventory and Analysis (FIA) program at the Northern Research Station of the U.S. Forest Service. These estimates, along with web-posted core tables, will be updated annually. For more information please refer to the last...

  10. MARYLAND AGRICULTURE AND YOUR WATERSHED

    EPA Science Inventory



    Using primarily 1995 State of Maryland agricultural statistics data, a new methodology was demonstrated with which State natural resource managers can analyze the areal extent of agricultural lands and production data on a watershed basis. The report organized major crop ...

  11. Hydrogeologic framework, hydrology, and water quality in the Pearce Creek Dredge Material Containment Area and vicinity, Cecil County, Maryland, 2010-11

    USGS Publications Warehouse

    Dieter, Cheryl A.; Koterba, Michael T.; Zapecza, Otto S.; Walker, Charles W.; Rice, Donald E.

    2013-01-01

    In 2009, to support an evaluation of the feasibility of reopening the Pearce Creek Dredge Material Containment Area (DMCA) in Cecil County, Maryland, for dredge-spoil disposal, the U.S. Geological Survey (USGS) began to implement a comprehensive study designed to improve the understanding of the hydrogeologic framework, hydrology, and water quality of shallow aquifers underlying the DMCA and adjacent communities, to determine whether or not the DMCA affected groundwater quality, and to assess whether or not groundwater samples contained chemical constituents at levels greater than maximum allowable or recommended levels established by the U.S. Environmental Protection Agency Safe Drinking Water Act. The study, conducted in 2010-11 by USGS in cooperation with the U.S. Army Corps of Engineers, included installation of observation wells in areas where data gaps led earlier studies to be inconclusive. The data from new wells and existing monitoring locations were interpreted and show the DMCA influences the groundwater flow and quality. Groundwater flow in the two primary aquifers used for local supplies-the Magothy aquifer and upper Patapsco aquifer (shallow water-bearing zone)-is radially outward from the DMCA toward discharge areas, including West View Shores, the Elk River, and Pearce Creek Lake. In addition to horizontal flow outward from the DMCA, vertical gradients primarily are downward in most of the study area, and upward near the Elk River on the north side of the DMCA property, and the western part of West View Shores. Integrating groundwater geochemistry data in the analysis, the influence of the DMCA is not only a source of elevated concentrations of dissolved solids but also a geochemical driver of redox processes that enhances the mobilization and transport of redox-sensitive metals and nutrients. Groundwater affected by the DMCA is in the Magothy aquifer and upper Patapsco aquifer (shallow water-bearing zone). Based on minimal data, the water quality

  12. Undergraduate Transfers: Maryland Public Institutions of Higher Education, 2002-2003

    ERIC Educational Resources Information Center

    Maryland Higher Education Commission, 2004

    2004-01-01

    This report is composed of a set of tables showing, by campus, the undergraduate students who were enrolled in Maryland public colleges in 2002 and the Maryland public college to which they transferred in 2003. This analysis is possible because the Commission collects enrollment data on all students using an encrypted social security number as a…

  13. Environmental Assessment for Taxiway Whiskey Supplemental Projects at Joint Base Andrews-Naval Air Facility Washington, Prince George’s County, Maryland

    DTIC Science & Technology

    2015-09-01

    associated duct banks and electrical components, and an airfield lighting vault are required. 1.3 SCOPE OF THE EA This EA evaluates the potential impacts on...Taxiway Whiskey. The east side work includes constructing an access road to serve the vault and installing a new 80-way duct bank connecting the east...Maryland September 2015 2-3 the East Runway and Taxiway Echo. On the west side of the airfield the duct bank servicing the airfield would be relocated

  14. Investigating Town Design and Social Organization at Port Tobacco, Maryland Through the Use of Archaeology and Geophysics

    NASA Astrophysics Data System (ADS)

    Quantock, Peter C.

    This thesis examines the connection between town planning and social organization at the small town site of Port Tobacco in south-central Charles County, Maryland from the beginning of the 18th century through to the end of the 19th century. By employing a methodology of both geophysical techniques and archaeological excavations, I was able to locate and map numerous structures and features associated with town planning and examine how these spaces were used. This data was used to show how social order, power, and wealth transformed the town layout from a linear settlement along the river into a grid-like pattern. Specifically, I was able to show that these changes in town layout were dominated by the power of the local elite landowners and tobacco merchants.

  15. 75 FR 60013 - Approval and Promulgation of Air Quality Implementation Plans; Maryland; Control of Volatile...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-29

    ... Promulgation of Air Quality Implementation Plans; Maryland; Control of Volatile Organic Compounds Emissions... Maryland's Volatile Organic Compounds from Specific Processes Regulation. Maryland has adopted standards... (RACT) requirements for sources of volatile organic compounds (VOCs) covered by control techniques...

  16. Effects of Maryland's law banning Saturday night special handguns on crime guns

    PubMed Central

    Vernick, J.; Webster, D.; Hepburn, L.

    1999-01-01

    Objectives—To determine the effects of a 1988 Maryland law that banned "Saturday night special" handguns on the types of guns used in crime. To determine if controls on the lawful market for handguns affect the illegal market as well. Setting—Baltimore, Maryland, and 15 other US cities participating in a crime gun tracing project. Methods—Cross sectional comparison of the proportion of crime guns that are banned by the Maryland law, comparing Baltimore, MD with 15 other cities outside of Maryland. Multivariate linear regression analysis to determine if observed differences between Baltimore and 15 other cities are explained by demographic or regional differences among the cities rather than Maryland's law. Results—Among crime guns, a gun banned by Maryland's law is more than twice as likely (relative risk (RR) 2.3, 95% confidence interval (CI) 2.0 to 2.5) to be the subject of a crime gun trace request in 15 other cities combined, than in Baltimore. Among homicide guns, a crime especially relevant for public safety, a comparable difference (RR 2.1, 95% CI 1.1 to 4.2) was observed. The proportion of Baltimore's crime guns that are banned is 12 percentage points lower than would be expected based on its demographic and regional characteristics alone. Among crime guns purchased after 1990, a much smaller proportion in Baltimore are banned models than in 15 other cities. Conclusions—Maryland's law has reduced the use of banned Saturday night specials by criminals in Baltimore. Contrary to the claims of some opponents of gun control laws, regulation of the lawful market for firearms can also affect criminals. PMID:10628912

  17. Maryland House Environment & Transportation Committee Visit

    NASA Image and Video Library

    2016-11-15

    Center Director Chris Scolese welcomed the Maryland House Environment & Transportation Committee to Goddard on November 15, 2016. The group visited the James Webb Space Telescope JWST and then they toured the Robotics Operations Facility.

  18. 77 FR 16558 - General Management Plan/Final Environmental Impact Statement, Hampton National Historic Site...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-21

    ... Management Plan/Final Environmental Impact Statement, Hampton National Historic Site, Maryland AGENCY...) announces the availability of the Final Environmental Impact Statement for the General Management Plan.../Baltimore County Library, 320 York Avenue, Towson, Maryland 21204. Baltimore County Tourism Office and...

  19. Instructional Resources. The Significance of Form: The Architecture of Public Buildings.

    ERIC Educational Resources Information Center

    Talbot-Stanaway, Susan; And Others

    1989-01-01

    Presents the architecture of public buildings through a set of four lessons. (S. Talbot-Stanaway and Elizabeth Hornor). The lessons teach about the Oshkosh Grand Opera House in Oshkosh, Wisconsin; the Clayton County Library in Jonesboro, Georgia; the Pennsylvania Academy of the Fine Arts in Philadelphia, Pennsylvania; and the National Gallery of…

  20. The Maryland Refutation Proof Procedure.

    ERIC Educational Resources Information Center

    Minker, Jack; And Others

    The Maryland Refutation Proof Procedure System (MRPPS) is an interactive experimental system intended for studying deductive search methods. Although the work is oriented towards question-answering, MRPPS provides a general problem solving capability. There are three major components within MRPPS. These are: (1) an inference system, (2) a search…

  1. The difference between the potentiometric surfaces of the Upper Patapsco aquifer in southern Maryland, September 1990 and September 2009

    USGS Publications Warehouse

    Curtin, Stephen E.; Andreasen, David C.; Staley, Andrew W.

    2010-01-01

    This report presents a map showing the change in the potentiometric surface of the upper Patapsco aquifer in the Patapsco Formation of Early Cretaceous age in Southern Maryland between September 1990 and September 2009. The map, based on water level differences obtained from 33 wells, shows that during the 19-year period, the change in the potentiometric surface ranged from zero at the edge of the outcrop area in northern Anne Arundel County to a decline of 20 feet at Broad Creek, 16 feet near Arnold, 32 feet at Waldorf, 37 feet at the Chalk Point power plant, and 43 feet at Lexington Park. The map also shows well yield in gallons per day for 2008 at wells or well fields.

  2. Normative data for the Maryland CNC Test.

    PubMed

    Mendel, Lisa Lucks; Mustain, William D; Magro, Jessica

    2014-09-01

    The Maryland consonant-vowel nucleus-consonant (CNC) Test is routinely used in Veterans Administration medical centers, yet there is a paucity of published normative data for this test. The purpose of this study was to provide information on the means and distribution of word-recognition scores on the Maryland CNC Test as a function of degree of hearing loss for a veteran population. A retrospective, descriptive design was conducted. The sample consisted of records from veterans who had Compensation and Pension (C&P) examinations at a Veterans Administration medical center (N = 1,760 ears). Audiometric records of veterans who had C&P examinations during a 10 yr period were reviewed, and the pure-tone averages (PTA4) at four frequencies (1000, 2000, 3000, and 4000 Hz) were documented. The maximum word-recognition score (PBmax) was determined from the performance-intensity functions obtained using the Maryland CNC Test. Correlations were made between PBmax and PTA4. A wide range of word-recognition scores were obtained at all levels of PTA4 for this population. In addition, a strong negative correlation between the PBmax and the PTA4 was observed, indicating that as PTA4 increased, PBmax decreased. Word-recognition scores decreased significantly as hearing loss increased beyond a mild hearing loss. Although threshold was influenced by age, no statistically significant relationship was found between word-recognition score and the age of the participants. RESULTS from this study provide normative data in table and figure format to assist audiologists in interpreting patient results on the Maryland CNC test for a veteran population. These results provide a quantitative method for audiologists to use to interpret word-recognition scores based on pure-tone hearing loss. American Academy of Audiology.

  3. 76 FR 51922 - Approval and Promulgation of Air Quality Implementation Plans; Maryland; Adoption of Plastic...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-19

    ... Promulgation of Air Quality Implementation Plans; Maryland; Adoption of Plastic Parts and Business Machines..., Plastic Parts and Business Machines Coating. Maryland's SIP revision meets the requirement to adopt... (CTG) for Miscellaneous Metal and Plastic Parts Coatings and will help Maryland attain and maintain the...

  4. Maryland's efforts to develop regulations creating an air emissions offset trading program

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Guy, D.M.; Zaw-Mon, M.

    1999-07-01

    Under the federal Clean Air Act's New Source Review program, many companies located in or planning to locate in areas that do not meet federal air quality standards or in the Northeast Ozone Transport Region (northern Virginia to Maine) must obtain emission reductions (called offsets) of volatile organic compounds and nitrogen oxides that are greater than the new emissions that will be released. This offset requirement allows growth in industry while protecting air quality against deterioration. Despite the federal offset requirement, a formal banking and trading program is not mandated by the Clean Air Act Amendments of 1990. Still, amore » mechanism is needed to ensure that emission reduction credits (ERCs) are available for sources to use to meet the offset requirement. Currently, Maryland does not have regulations covering the sale or transfer of ERCs from one facility to another. Maryland works with industry on a case-by-case basis to identify potential sources of ERCs and to assist in obtaining them. Then, the offset requirement and the ERCs used to meet the offsets are incorporated into individual permits using various permitting mechanisms. Desiring certainty and stability in the banking and trading process, Maryland's business community has pressed for regulations to formalize Maryland's procedures. Working over several years through a stakeholder process, Maryland has developed concepts for a trading program and a draft regulation. This paper describes Maryland's current case-by-case banking and trading procedure and traces efforts to develop a regulation to formalize the process. The paper discusses complex policy issues related to establishing a banking and trading program, describes the principal elements of Maryland's draft regulation, and summarizes elements of other states' emissions banking and trading programs.« less

  5. Map showing how the potentiometric surface of the Magothy Aquifer of August 1980 differed from the potentiometric surface of September 1977, in southern Maryland

    USGS Publications Warehouse

    Mack, Frederick K.; Wheeler, J.C.; Curtin, Stephen E.

    1982-01-01

    The map is based on the differences between two sets of water-level measurements made in 65 observation wells. One set was made in 1977, a relatively dry year, and the other set was made in 1980, another relatively dry year. The map shows that the potentiometric surface was higher in 1980, by as much as 9 feet, than it was in 1977, in a band a few miles wide near the outcrop and subcrop areas of the aquifer in northern Prince Georges County and central Anne Arundel County. In the remainder of the map area, the 1980 potentiometric surface was lower than it had been in 1977, with declines as great as 20 feet measured in well fields at Waldorf and Chalk Point. The network of observation wells was developed and is operated and maintained as part of the cooperative program between the U.S. Geological Survey and agencies of the Maryland Department of Natural Resources. (USGS)

  6. University of Maryland MRSEC - Education: Homeschool

    Science.gov Websites

    science and engineering learning. For a list of past homeschool programs, click here. “I would like to University of Maryland campus in the MRSEC Science & Engineering Learning Center (Room 1233, Chemistry

  7. Case-mix payment for nursing home care: lessons from Maryland.

    PubMed

    Feder, J; Scanlon, W

    1989-01-01

    Even before Medicare adopted case-based payments for hospitals, some state Medicaid programs employed case-mix payment systems for nursing home care. Their purpose was less to promote cost containment than to improve access to nursing homes for the most costly patients. This paper evaluates one such system, adopted by the state of Maryland in 1983 as part of an overall reimbursement reform. Using data on nursing home patient characteristics, costs, and staffing, as well as interviews with officials and various providers of care, the article shows that Maryland's system was successful in shifting nursing home service away from light-care and toward heavy-care patients. Furthermore, the shift occurred without inducing readily measurable declines in quality of care and with little additional administrative cost (partly because the state built its case-mix system on preexisting patient review activities). Although states could learn from and improve upon Maryland's experience--most notably in offering incentives to improve quality of care and in targeting community care on the light-care patients that nursing homes become less willing to serve--Maryland demonstrates that case-mix payment can change nursing home behavior in desired directions without substantial negative consequences.

  8. 50 CFR 32.39 - Maryland.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... or under) must remain within sight and normal voice contact of an adult age 18 or older. Children... caliber or larger with not less than 60 grains of black powder or a black powder equivalent. ii. We... shiner, eel, and sunfish (includes bluegill, black crappie, warmouth, and pumpkinseed). Maryland State...

  9. Renewable Energy Alternatives in Maryland.

    ERIC Educational Resources Information Center

    Welsh, Greg E.; McClellan, Deborah A. S.

    This handbook discusses the renewable energy resources suitable for use in Maryland. It follows a question and answer format with sections about the following alternative renewable energy sources; solar, wind, wood, water, bio-gas/methane, and geothermal. Each section includes a list of recommended readings, appropriate agencies or organizations,…

  10. Maryland House Environment & Transportation Committee Visit

    NASA Image and Video Library

    2016-11-15

    Center Director Chris Scolese welcomed the Maryland House Environment & Transportation Committee to Goddard on November 15, 2016. The group visited the James Webb Space Telescope JWST and saw the mirrors open, then they toured the Robotic Operations Center - ROC.

  11. Map showing radon potential of rocks and soils in Montgomery County, Maryland

    USGS Publications Warehouse

    Gundersen, L.C.; Reimer, G.M.; Wiggs, C.R.; Rice, C.A.

    1988-01-01

    This report summarizes the radon potential of Montgomery County in the context of its geology. Radon is a naturally occurring gas produced by the radioactive decay of uranium. Radon produced by uraniferous rocks and soils may enter a house through porous building materials and through openings in walls and floors. Radon gases has a tendency to move from the higher pressure commonly existing in the soil to the lower pressure commonly existing in the house. The U.S. Environmental Protection Agency (U.S. EPA, 1986a) estimates that elevated levels of indoor radon may be associated with 5,000 to 20,000 of the 130,000 lung cancer deaths per year. They also estimate that 8 to 12 percent of the homes in the United States will have annual average indoor radon levels exceeding 4 picoCuries per liter of air (pCi/L). Above this level, the U.S. EPA recommends homeowners take remedial action. May factors control the amount of radon which may enter a home from the geologic environment. Soil drainage, permeability, and moisture content effect the amount of radon that can be released from rocks and soils (known as the emmanation) and may limit or increase how far it can migrate. Well drained, highly permeable soils facilitate the movement of radon. Soils with water content in the 8 to 15 percent range enhance the emmanation of radon (Lindmark, 1985). Daily and seasonal variations in soil and indoor radon can be caused by meteorologic factors such as barometric pressure, temperature, and wind (Clements and Wilkening, 1974; Schery and other, 1984). Construction practices also inhibit or promote entry of radon into the home (U.S. EPA, 1986b). In general, however, geology controls the source and distribution of radon (Akerblom and Wilson, 1982; Gundersen and others, 1987, 1988; Sextro and others, 1987; U.S. EPA, 1983; Peake, 1988; Peake and Hess, 1988). The following sections describe: 1) the methods used to measure radon and equivalent uranium (eU) in soil; 2) the radon potential

  12. University of Maryland MRSEC - Leadership

    Science.gov Websites

    . University of Maryland Materials Research Science and Engineering Center Home About Us Leadership MRSEC Templates Opportunities Search Home » About Us » Leadership Leadership Reutt-Robey photo Janice from the College of Arts and Humanities at UMD. Historical Leadership Ellen Williams MRSEC Director

  13. The timber industries of Maryland

    Treesearch

    James T. Bones; John E. Brodie

    1977-01-01

    A periodic evaluation of statewide industrial timber output based upon a complete survey of the primary wood manufacturing plants in Maryland. Contains statistics about industrial timber production and receipts in 1975 and the production and disposition of the manufacturing residues that resulted. The 43 million cubic feet of industrial wood produced in 1975...

  14. 78 FR 73442 - Approval and Promulgation of Air Quality Implementation Plans; Maryland; State Boards Requirements

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-06

    ... www.regulations.gov or email. The www.regulations.gov Web site is an ``anonymous access'' system... because the heads of Maryland Department of the Environment (MDE) and the Maryland Public Service... SIP Revision On August 14, 2013, the State of Maryland, through MDE, submitted a SIP revision ( 13-03B...

  15. Maryland: Mountains to the Sea. A Gallery Class, Grades 4-6.

    ERIC Educational Resources Information Center

    National Aquarium in Baltimore, MD. Dept. of Education.

    The "Maryland: Mountains to the Sea" exhibit (National Aquarium in Baltimore) consists of four exhibits and eight graphics panels. The exhibits are an Allegheny pond and a salt marsh which are both partially open, Assateague beach which includes birds, and the continental shelf. A variety of Maryland pond and ocean fish, crabs, and water…

  16. Groundwater quality and occurrence and distribution of selected constituents in the Aquia and Upper Patapsco aquifers, Naval Air Station Patuxent River, St. Mary's County, Maryland, July 2008

    USGS Publications Warehouse

    Dieter, Cheryl A.; Campo, Kimberly W.; Baker, Anna C.

    2012-01-01

    The Naval Air Station Patuxent River in southern Maryland has continued to expand in the first decade of the 21st century, contributing to rapid population growth in the surrounding area. The increase in population has caused State and County water managers and others to be concerned about the impact of population growth on the quantity and quality of groundwater supplies. The U.S. Geological Survey has been investigating the groundwater resources of the air station since 1998. As part of that ongoing investigation, groundwater was sampled in 2008 in six wells in the Aquia aquifer and two wells in the Upper Patapsco aquifer in the vicinity of Naval Air Station Patuxent River and Webster Outlying Field. Groundwater samples were analyzed for basic chemistry (field parameters, major ions, and nutrients) as well as several water-quality issues of concern including the occurrence of arsenic and tungsten, and saltwater intrusion. The results of the 2008 groundwater-quality sampling indicate that the overall quality of groundwater in the Aquia aquifer has not changed since 1943; data are too limited to determine if groundwater quality has changed in the Upper Patapsco aquifer. At one well in the Aquia aquifer, the arsenic concentration exceeded the U.S. Environmental Protection Agency standard for drinking water. Arsenic was not detected in samples from the Upper Patapsco aquifer. Tungsten concentrations were detected at low concentrations near the laboratory reporting level in all eight samples. There was no evidence of saltwater intrusion in any of the wells.

  17. University of Maryland MRSEC - For Members: Travel

    Science.gov Websites

    Educational Education Pre-College Programs Homeschool Programs Undergraduate & Graduate Programs Teacher University of Maryland requires pre-approval for all travel. Domestic travel approval requests must be

  18. Government. Maryland High School Assessment.

    ERIC Educational Resources Information Center

    Maryland State Dept. of Education, Baltimore.

    This document is a mostly multiple choice test for content given to Maryland high school students enrolled in a government course. The test is divided into 2 sessions, with 25 questions in session 1 and 56 questions in session 2. The multiple choice questions are designated as selected response questions. Other constructed response questions…

  19. The accountability of nonprofit hospitals: lessons from Maryland's community benefit reporting requirements.

    PubMed

    Gray, Bradford H; Schlesinger, Mark

    2009-01-01

    Under Internal Revenue Service requirements, nonprofit hospitals will begin filing new community benefit reports in 2010. Maryland has had similar requirements since 2004. This paper, based on interviews at 20 hospitals, describes how Maryland's requirements affected hospitals and their activities. Increases in reported community benefit expenditures since the program began are due to both changes in activities and better data capture. Charity care accounts for one-third of community benefit dollars. A key distinction concerns whether hospitals take an accounting or managerial approach to community benefit. The Maryland experience suggests the issues that will arise when the national requirements are implemented.

  20. Cost-Effectiveness Analysis of the Residential Provisions of the 2015 IECC for Maryland

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Mendon, Vrushali V.; Zhao, Mingjie; Taylor, Zachary T.

    2016-02-15

    The 2015 IECC provides cost-effective savings for residential buildings in Maryland. Moving to the 2015 IECC from the 2012 IECC base code is cost-effective for residential buildings in all climate zones in Maryland.

  1. Maryland Kids Count Factbook, 2001.

    ERIC Educational Resources Information Center

    Advocates for Children and Youth, Baltimore, MD.

    This 7th annual Kids Count Factbook provides information on trends in the well-being of children in Maryland and its 24 jurisdictions. The statistical portrait is based on 18 indicators of well-being: (1) low birth-weight infants; (2) infant mortality; (3) early prenatal care; (4) binge drinking; (5) child deaths; (6) child injury rate; (7) grade…

  2. Maryland's Kids Count Factbook 1996.

    ERIC Educational Resources Information Center

    Advocates for Children and Youth, Baltimore, MD.

    This Kids Count report details statewide trends in the well-being of Maryland's children. The statistical portrait is based on 14 indicators of child well being: (1) child poverty; (2) child support; (3) births to teens; (4) low birthweight infants; (5) infant mortality; (6) lead screening; (7) child abuse and neglect; (8) child death rate; (9)…

  3. Maryland 1994 KIDS COUNT Factbook.

    ERIC Educational Resources Information Center

    Advocates for Children and Youth, Baltimore, MD.

    This factbook presents the second comprehensive look at the conditions of children and families in Maryland. It can be used as an important tool in measuring how well or how poorly children are doing in 15 baseline outcome measures, organized in four basic sections: economic well-being, good health, safety, and preparing for adulthood. The data…

  4. 1. Photocopy of photograph (original print located in Pope & ...

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

    1. Photocopy of photograph (original print located in Pope & Talbot Archives Port Gamble, WA). Unknown Photographer, 1907. View of Gamble Bay, facing west from east shore. S'klallam Village of Boston in foreground, Puget Mill in background. - Port Gamble National Historic Landmark, Bounded by Hood Canal, Port Gamble Bay, State Road 104, & Town Limits, Port Gamble, Kitsap County, WA

  5. The Hughes Co., Photographers, Baltimore, Maryland 4 March 1943 Ironwood ...

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

    The Hughes Co., Photographers, Baltimore, Maryland 4 March 1943 Ironwood under construction at the U.S. Coast Guard shipyard in Curtis Bay, Maryland. Ironwood was the only 180 built by the U.S. Coast Guard and the only one not built in Duluth, Minnesota (Note the caption on the photograph reads: U.S.C.G.C. Ironwood, top view starboard looking forward) - U.S. Coast Guard Cutter IRONWOOD, Kodiak, Kodiak Island Borough, AK

  6. Fabrication of high aspect grating using bonded substrate for X-ray refraction imaging by Talbot-Lau interferometer

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Tada, Takuji; Murakoshi, Dai; Ishii, Hiroyasu

    2012-07-31

    In order to improve the image quality of X-ray refraction images using a Talbot-Lau interferometer, we have been attempting to fabricate gratings with high aspect ratio. In our attempt, deep grooves of grating structure were channeled on a Si substrate bonded by Au diffusion bonding method, and the grooves were filled with Au where the Au layer used for the bonding Si substrate was acting as a seed layer of Au electroplating. From the results of a visibility measurement and a cross sectional SEM image, it was confirmed that the grooves with a pitch of 5.8 {mu}m and a depthmore » of 100 {mu}m could be successfully filled with Au over a large area of 72 Multiplication-Sign 80 mm{sup 2}. Using this grating, the X-ray refraction images for the cartilage of a knee joint of a livestock pig could be obtained where SPS method was employed for the single-shot image acquisition.« less

  7. Benchmarking the Economic Impact and Effectiveness of University Technology Transfer in Maryland.

    ERIC Educational Resources Information Center

    Clinch, Richard

    This study examined university technology transfer in Maryland in terms of three issues: (1) the economic impact of university technology transfer; (2) a comparison of the technology transfer effort of University of Maryland System (UMS) institutions with other regional and "best practice" institutions; and (3) the technology transfer…

  8. 77 FR 25953 - Approval and Promulgation of Air Quality Implementation Plans; Maryland; Removal of the 1980...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-02

    ... Promulgation of Air Quality Implementation Plans; Maryland; Removal of the 1980 Consent Order for the Maryland Slag Company AGENCY: Environmental Protection Agency (EPA). ACTION: Proposed rule. SUMMARY: EPA... issued to the Maryland Slag Company (now known as MultServ). The 1980 Consent Order is no longer required...

  9. 77 FR 44204 - Approval and Promulgation of Air Quality Implementation Plans; Maryland; Control of Iron and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-27

    ... to approve revisions to the Maryland State Implementation Plan (SIP) submitted by the Maryland... (Sparrows Point) is the only sintering plant located in the State of Maryland, and therefore the only source... compliance with specified pressure drop and flow rate operating parameters. EPA is approving these revisions...

  10. Initiating pain and palliative care outpatient services for the suburban underserved in Montgomery County, Maryland: Lessons learned at the NIH Clinical Center and MobileMed.

    PubMed

    Aggarwal, Sunil K; Ghosh, Amrita; Cheng, M Jennifer; Luton, Kathleen; Lowet, Peter F; Berger, Ann

    2016-08-01

    With the ongoing expansion of palliative care services throughout the United States, meeting the needs of socioeconomically marginalized populations, as in all domains of healthcare, continues to be a challenge. Our specific aim here was to help meet some of these needs through expanding delivery of pain and palliative care services by establishing a new clinic for underserved patients and collecting descriptive data about its operation. In November of 2014, the National Institutes of Health Clinical Center's Pain and Palliative Care Service (PPCS) launched a bimonthly offsite pain and palliative care outpatient clinic in collaboration with Mobile Medical Care Inc. (MobileMed), a private not-for-profit primary care provider in Montgomery County, Maryland, serving underserved area residents since 1968. Staffed by NIH hospice and palliative medicine clinical fellows and faculty, the clinic provides specialty pain and palliative care consultation services to patients referred by their primary care healthcare providers. A patient log was maintained, charts reviewed, and referring providers surveyed on their satisfaction with the service. The clinic had 27 patient encounters with 10 patients (6 males, 4 females, aged 23-67) during its first 7 months of operation. The reason for referral for all but one patient was chronic pain of multiple etiologies. Patients had numerous psychosocial stressors and comorbidities. All primary care providers who returned surveys (n = 4) rated their level of satisfaction with the consultation service as "very satisfied" or "extremely satisfied." This brief descriptive report outlines the steps taken and logistical issues addressed to launch and continue the clinic, the characteristics of patients treated, and the results of quality-improvement projects. Lessons learned are highlighted and future directions suggested for the clinic and others that may come along like it.

  11. Early Opportunities Research Partnership Between Howard University, University of Maryland Baltimore County and NASA Goddard for Engaging Underrepresented STEM Students in Earth and Space Sciences

    NASA Astrophysics Data System (ADS)

    Misra, P.; Venable, D. D.; Hoban, S.; Demoz, B.; Bleacher, L.; Meeson, B. W.; Farrell, W. M.

    2017-12-01

    Howard University, University of Maryland Baltimore County and NASA Goddard Space Flight Center (GSFC) are collaborating to engage underrepresented STEM students and expose them to an early career pathway in NASA-related Earth & Space Science research. The major goal is to instill interest in Earth and Space Science to STEM majors early in their academic careers, so that they become engaged in ongoing NASA-related research, motivated to pursue STEM careers, and perhaps become part of the future NASA workforce. The collaboration builds on a program established by NASA's Dynamic Response of the Environments of Asteroids, the Moon and the moons of Mars (DREAM2) team to engage underrepresented students from Howard in summer internships. Howard leveraged this program to expand via NASA's Minority University Research and Education Project (MUREP) funding. The project pairs Howard students with GSFC mentors and engages them in cutting-edge Earth and Space Science research throughout their undergraduate tenure. The project takes a multi-faceted approach, with each year of the program specifically tailored to each student's strengths and addressing their weaknesses, so that they experience a wide array of enriching research and professional development activities that help them grow both academically and professionally. During the academic year, the students are at Howard taking a full load of courses towards satisfying their degree requirements and engaging in research with their GSFC mentors via regular telecons, e-mail exchanges, video chats & on an average one visit per semester to GSFC for an in-person meeting with their research mentor. The students extend their research with full-time summer internships at GSFC, culminating in a Capstone Project and Senior Thesis. As a result, these Early Opportunities Program students, who have undergone rigorous training in the Earth and Space Sciences, are expected to be well-prepared for graduate school and the NASA workforce.

  12. CONCERN FOR AGRICULTURAL MIGRANTS IN MARYLAND.

    ERIC Educational Resources Information Center

    Governor's Committee on Migratory Labor, College Park, MD.

    PROBLEMS, PROGRESS, AND ACTIVITIES OF THE AGENCIES AND ORGANIZATIONS OF THE MARYLAND GOVERNOR'S COMMITTEE FOR MIGRATORY LABOR ARE PRESENTED. EFFECTIVE HEALTH EDUCATION SHOULD BE DEVELOPED TO HELP MIGRANTS ACHIEVE BETTER HEALTH CONDITIONS THROUGH THEIR OWN ACTIVITIES AND EFFORTS. HOUSING AND LIVING CONDITIONS ARE IMPROVING UNDER REGULATIONS ADOPTED…

  13. University of Maryland MRSEC - News: Employment

    Science.gov Websites

    . University of Maryland Materials Research Science and Engineering Center Home About Us Leadership Administration Committees Directory Research IRG 1 IRG 2 Seed 1 Seed 2 Seed 3 Highlights Publications Facilities Educational Education Pre-College Programs Homeschool Programs Undergraduate & Graduate Programs Teacher

  14. University of Maryland MRSEC - Collaborations: Educational

    Science.gov Websites

    . University of Maryland Materials Research Science and Engineering Center Home About Us Leadership Administration Committees Directory Research IRG 1 IRG 2 Seed 1 Seed 2 Seed 3 Highlights Publications Facilities Educational Education Pre-College Programs Homeschool Programs Undergraduate & Graduate Programs Teacher

  15. 76 FR 59344 - Approval and Promulgation of Air Quality Implementation Plans; Maryland; Transportation...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-26

    ... Promulgation of Air Quality Implementation Plans; Maryland; Transportation Conformity Regulations AGENCY... Implementation Plan (SIP) revision submitted by Maryland to establish transportation conformity regulations. In the Final Rules section of this Federal Register, EPA is approving the State's SIP submittal as a...

  16. 76 FR 51925 - Approval and Promulgation of Air Quality Implementation Plans; Maryland; Adhesives and Sealants Rule

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-19

    ... http://www.regulations.gov Web site is an ``anonymous access'' system, which means EPA will not know..., the Maryland Department of the Environment (MDE) submitted revisions to its SIP (Maryland SIP 08-02....11.35). On May 28, 2009, MDE submitted another revision to its SIP (Maryland SIP 09-01) amending...

  17. Seasonal cycles in streamwater quality on Catoctin Mountain, Maryland

    USGS Publications Warehouse

    Rice, Karen C.; Bricker, Owen P.

    1995-01-01

    In 1980, the U.S. Congress mandated the National Acid Precipitation Assessment Program (NAPAP) to study the effects of acidic precipitation (acid rain). In 1982, the U.S. Geological Survey (USGS) was selected to be the lead Federal agency under NAPAP to monitor the composition of precipitation and its effects on the environment. In 1982, the USGS began to monitor precipitation and streamwater on Catoctin Mountain in north-central Maryland (fig. 1); the effort has continued through the present. Beginning in 1990, funding for these data-collection and interpretation activities was supplemented by the Maryland Department of the Environment and the Maryland Department of Natural Re- sources. The collection and interpretation of long-term precipitation and streamwater-quality records, such as those at Catoctin Mountain, provide valuable information for management decisions. At the local level, the information can be used to identify periods when streamwater quality may pose a danger to aquatic resources, such as finfish; at the national level, the information can be used to assess the effectiveness of the Clean Air Act Amendments.

  18. The forest resources of Maryland

    Treesearch

    Douglas S. Powell; Neal P. Kingsley

    1980-01-01

    The findings in this statistical and analytical report of the third forest survey of Maryland, completed in 1976, are based on remeasured 1/5 acre plots and both remeasured and new 10-point variable radius plots. The present status and trends in forest-land area, timber volume, and annual growth and removals are discussed. Timber products output by forest industries,...

  19. Photo Gallery for Anacostia Watershed (Washington, DC/Maryland)

    EPA Pesticide Factsheets

    Anacostia Watershed (Washington, DC/Maryland) of the Urban Waters Federal Partnership (UWFP) reconnects urban communities with their waterways by improving coordination among federal agencies and collaborating

  20. 75 FR 34669 - Approval and Promulgation of Air Quality Implementation Plans; Maryland; Transportation...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-18

    ... Promulgation of Air Quality Implementation Plans; Maryland; Transportation Conformity Regulations AGENCY... Implementation Plan (SIP) revision submitted by Maryland for Transportation Conformity Regulations. In the Final Rules section of this Federal Register, EPA is approving the State's SIP submittal as a direct final...

  1. A Resource Guide for the Maryland Plan's Group Project and Line Production.

    ERIC Educational Resources Information Center

    Day, Gerald F.

    This guide was developed for teachers who are using the Maryland Plan's group processes--the group project and line production methods. The guide is divided into four sections. The first section is an overview of the entire Maryland Plan. It describes the program which provides high school industrial arts students, from seventh grade through ninth…

  2. 78 FR 68834 - Maryland Solar, LLC; Notice of Petition for Limited Waiver

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-15

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket Nos. EL14-10-000; QF11-171-003] Maryland Solar, LLC; Notice of Petition for Limited Waiver Take notice that on November 6, 2013, pursuant... Procedure, 18 CFR 292.207, Maryland Solar, LLC filed a petition for limited waiver of section 292.601(c)(1...

  3. Large-angle x-ray scatter in Talbot-Lau interferometry for breast imaging

    PubMed Central

    Vedantham, Srinivasan; Shi, Linxi; Karellas, Andrew

    2014-01-01

    Monte Carlo simulations were used to investigate large-angle x-ray scatter at design energy of 25 keV during small field of view (9.6 cm × 5 cm) differential phase contrast imaging of the breast using Talbot-Lau interferometry. Homogenous, adipose and fibroglandular breasts of uniform thickness ranging from 2 to 8 cm encompassing the field of view were modeled. Theoretically determined transmission efficiencies of the gratings were used to validate the Monte Carlo simulations, followed by simulations to determine the x-ray scatter reaching the detector. The recorded x-ray scatter was classified into x-ray photons that underwent at least one Compton interaction (incoherent scatter) and Rayleigh interaction alone (coherent scatter) for further analysis. Monte Carlo based estimates of transmission efficiencies showed good correspondence (r2 > 0.99) with theoretical estimates. Scatter-to-primary ratio increased with increasing breast thickness, ranging from 0.11 to 0.22 for 2 to 8 cm thick adipose breasts and from 0.12 to 0.28 for 2 to 8 cm thick fibroglandular breasts. The analyzer grating reduced incoherent scatter by ~18% for 2 cm thick adipose breast and by ~35% for 8 cm thick fibroglandular breast. Coherent scatter was the dominant contributor to the total scatter. Coherent-to-incoherent scatter ratio ranged from 2.2 to 3.1 for 2 to 8 cm thick adipose breasts and from 2.7 to 3.4 for 2 to 8 cm thick fibroglandular breasts. PMID:25295630

  4. Four years of lessons learned: The 2001-2004 Maryland influenza prevention seasons.

    PubMed

    Tate, Tiffany

    2006-01-01

    More than 36,000 Americans die and 200,000 more are hospitalized because of influenza every\\year. Despite the wide availability of a vaccine to prevent influenza, the vast majority of Americans go unimmunized. The Maryland Department of Health and Mental Hygiene (DHMH) and the Maryland Partnership for Prevention (MPP) collect data about the state's local health departments' influenza season practices and experiences and compile them into the annual Maryland Influenza Season Final Report. The report becomes a tool for DHMH, MPP, and the state's 24 local health departments to plan improvements in influenza vaccination services. This article chronicles four influenza seasons. Influenza season challenges experienced in three of the last four influenza seasons underscore the importance of coordination and communication efforts to ensure that vaccine is efficiently delivered to the most vulnerable populations. The partnership between DHMH and MPP has facilitated access to information on ordering and administration practices, communication systems, community partnerships, and lessons learned, thus enabling the state of Maryland to continually optimize its influenza vaccination promotion efforts.

  5. Maryland Apprenticeship and Training Program. Status Report July 1, 1990-June 30, 1991.

    ERIC Educational Resources Information Center

    Maryland State Dept. of Economic and Community Development, Baltimore.

    During 1990-91, Maryland's apprenticeship program prepared workers for careers in highly skilled trades and crafts. Apprenticeship programs are operated throughout the state by sponsors (employers or a joint committee of employers and union representatives). Maryland's apprenticeship system provides services to the business community and…

  6. PROGRESS IN MEETING PROBLEMS OF MIGRATORY LABOR IN MARYLAND, FOURTH ANNUAL REPORT.

    ERIC Educational Resources Information Center

    NYSTROM, PAUL E.; AND OTHERS

    THE VEGETABLE AND FRUIT INDUSTRIES OF MARYLAND HAVE LONG BEEN DEPENDENT UPON MIGRATORY LABOR FOR THE SEASONAL LABOR REQUIRED IN HARVESTING AND PROCESSING OPERATIONS. THIS LABOR FORCE COMES TO THE STATE IN THE SPRING OR SUMMER, IS EMPLOYED IN VARIOUS CAMPS IN MARYLAND AND STATES IN THE NORTH, AND MIGRATES SOUTH FOLLOWING THE HARVEST OF LATE…

  7. Maryland's Strategic Forest Lands Assessment--Using Indicators and Models for Decision Support

    Treesearch

    J. L. Horan; J. C. Wolf

    2006-01-01

    Sustaining healthy, ecologically functional, and economically viable forests is an increasing challenge in Maryland due to relentless urban development. Forests that once occupied more than 90 percent of Maryland’s landscape today cover only 41 percent of the land. As forests become more fragmented and parcelized they begin to lose their ability to provide important...

  8. Maryland Teacher Staffing Report 2016-2018

    ERIC Educational Resources Information Center

    Maryland State Department of Education, 2016

    2016-01-01

    The Maryland State Department of Education (MSDE), in conjunction with local school systems (LSS) and institutions of higher education (IHE), has conducted an annual educator supply and demand study since 1986, the original purpose of which was to determine critical teacher shortage areas. Although data are collected annually, since 2008 the…

  9. Maryland Community Colleges 1980 Program Evaluations.

    ERIC Educational Resources Information Center

    Maryland State Board for Community Colleges, Annapolis.

    This report contains qualitative evaluations of 48 programs throughout the Maryland community college system, as well as a statewide evaluation of Teacher Education transfer programs. A summary of the Teacher Education programs is presented first, in which the purpose and role of teacher education in the community college, enrollment trends,…

  10. The timber resources of Maryland

    Treesearch

    Roland H. Ferguson

    1967-01-01

    Under the authority of the McSweeney-McNary Forest Research Act of May 22, 1928, and subsequent amendments, the Forest Service, U. S. Department of Agriculture, conducts a series of continuing forest surveys of the states to provide up-to-date information about the forest resources of the Nation. A resurvey of the timber resources in Maryland was made in 1962-63 by the...

  11. The Timber Resource in Maryland

    Treesearch

    Northeastern Forest Experiment Station

    1955-01-01

    This is a report on the findings of the forest survey made in Maryland as part of the nationwide forest survey that is being carried on by the Forest Service, U.S. Department of Agriculture. It shows the area and condition of the forest land, the volume and quality of the standing timber, the rates of timber growth and mortality, and the extent of timber cutting for...

  12. DRAFT LANDSAT DATA MOSAIC: MONTGOMERY COUNTY, TEXAS; HARRIS COUNTY, TEXAS; FORT BEND COUNTY, TEXAS; BRAZORIA COUNTY, TEXAS; GALVESTON COUNTY, TEXAS

    EPA Science Inventory

    This is a draft Landsat Data Mosaic, which contains remote sensing information for Montgomery County, Texas Harris County, Texas Fort Bend County, Texas Brazoria County, Texas Galveston County, and Texas Imagery dates on the following dates: October 6, 1999 and September 29, 200...

  13. Migrant Workers on Maryland's Eastern Shore.

    ERIC Educational Resources Information Center

    Schumacher, Yvonne; And Others

    Based on facts gathered in 1982-83 and prepared to inform the United States Commission on Civil Rights of the status of migrants in the State of Maryland, this report summarizes findings about housing, health and safety, access/communication/transportation, employment issues, and education. The summary of housing conditions notes that more than…

  14. Links Related to Anacostia Watershed (Washington, DC/Maryland)

    EPA Pesticide Factsheets

    Anacostia Watershed (Washington, DC/Maryland) of the Urban Waters Federal Partnership (UWFP) reconnects urban communities with their waterways by improving coordination among federal agencies and collaborating with community-led efforts.

  15. Meetings & Events about Anacostia Watershed (Washington, DC/Maryland)

    EPA Pesticide Factsheets

    Anacostia Watershed (Washington, DC/Maryland) of the Urban Waters Federal Partnership (UWFP) reconnects urban communities with their waterways by improving coordination among federal agencies and collaborating with community-led efforts.

  16. Developing a Satellite Educational Program for Deaf and Hard of Hearing Students Residing in a Rural Setting.

    ERIC Educational Resources Information Center

    Witt, Sheree; Howell, Ruth

    The Allegany County School System and the Maryland School for the Deaf (MSD) have collaborated to develop a satellite program that brings MSD educational services to hard-of-hearing and deaf elementary students in rural western Maryland. In the past 5 years, the number of hearing-impaired preschoolers in Allegany and Garrett Counties increased…

  17. Program Contacts for Patapsco Watershed/Baltimore Region (Maryland)

    EPA Pesticide Factsheets

    Patapsco Watershed/Baltimore Region (Maryland) Area of the Urban Waters Federal Partnership (UWFP) reconnects urban communities with their waterways by improving coordination among federal agencies and collaborating with community-led efforts.

  18. 77 FR 6963 - Approval and Promulgation of Air Quality Implementation Plans; Maryland; Preconstruction...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-10

    ... Maryland Department of the Environment (MDE). This SIP revision revises and supplements the Maryland SIP by... generating stations to obtain a preconstruction permit from MDE when a CPCN is not required under the PSC... listed in the www.regulations.gov Web site. Although listed in the electronic docket, some information is...

  19. [Opportunities and Obstacles: Implementing Stimulus-Funded School Improvement Grants in Maryland, Michigan, and Idaho. Maryland Case Study

    ERIC Educational Resources Information Center

    McMurrer, Jennifer; McIntosh, Shelby

    2012-01-01

    Two schools in Maryland received ARRA SIG (American Recovery and Reinvestment Act School Improvement Grants) funds to enable them to implement their turnaround efforts. This paper describes the outcomes of these two ARRA SIG recipient schools: (1) G. James Gholson Middle School; and (2) Commodore John Rodgers Elementary School. The experiences of…

  20. 76 FR 68378 - Approval and Promulgation of Air Quality Implementation Plans; District of Columbia, Maryland...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-04

    ...; Determinations of Attainment of the 1997 Fine Particle Standard for the Metropolitan Washington and Martinsburg...-Maryland-Virginia (DC-MD-VA) and Martinsburg-Hagerstown, West Virginia-Maryland (WV-MD) fine particle (PM 2...

  1. 75 FR 59180 - Approval and Promulgation of Air Quality Implementation Plans; Maryland; Control Technique...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-27

    ... Promulgation of Air Quality Implementation Plans; Maryland; Control Technique Guidelines for Paper, Film, and... Technique Guidelines (CTG) for paper, film, and foil coatings. These amendments will reduce volatile organic... Promulgation of Air Quality Implementation Plans; Maryland; Control Technique Guidelines for Paper, Film, and...

  2. Maryland motor carrier program performance enhancement : [research summary].

    DOT National Transportation Integrated Search

    2014-02-01

    The Maryland Motor Carrier Program (MMCP) involves the regulation of : commercial vehicle safety inspections. This includes roadside inspections : programs which have a goal of improving safety and reducing crashes : involving commercial vehicles. Th...

  3. University of Maryland MRSEC - Education: Resources

    Science.gov Websites

    . University of Maryland Materials Research Science and Engineering Center Home About Us Leadership Moments in MSE The Materials Science and Engineering Career Resources Center Materials Research Society Central Super Science Fair Projects: Ideas, Topics, & Experiments All Science Fair Projects Science

  4. University of Maryland MRSEC - Research: Seed 1

    Science.gov Websites

    . University of Maryland Materials Research Science and Engineering Center Home About Us Leadership & Biochemistry Wolfgang Losert, Physics, IPST, IREAP Ben Shapiro, Bio-Engineering, Aerospace Engineering Edo Waks, Electrical & Computer Engineering, IREAP, JQI Creating specific functional patterns

  5. Night Owl: Maryland's After-Hours Reference Service.

    ERIC Educational Resources Information Center

    Duke, Deborah C.

    1994-01-01

    Discusses "Night Owl," a Maryland public library's after hours telephone reference service. Issues include project start-up, user profiles, types of questions, volume, after hours reference accessibility, security, costs, service limits, publicity, staffing, and employee turnover. Similar services in other states are cited. (Contains six…

  6. 75 FR 59084 - Approval and Promulgation of Air Quality Implementation Plans; Maryland; Control Technique...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-27

    ... Promulgation of Air Quality Implementation Plans; Maryland; Control Technique Guidelines for Paper, Film, and... from paper, film, and foil coatings. Specifically, Maryland is amending its regulations by adopting the requirements of EPA's Control Technique Guidelines (CTG) for Paper, Film, and Foil Coatings. These amendments...

  7. Development of Land Segmentation, Stream-Reach Network, and Watersheds in Support of Hydrological Simulation Program-Fortran (HSPF) Modeling, Chesapeake Bay Watershed, and Adjacent Parts of Maryland, Delaware, and Virginia

    USGS Publications Warehouse

    Martucci, Sarah K.; Krstolic, Jennifer L.; Raffensperger, Jeff P.; Hopkins, Katherine J.

    2006-01-01

    The U.S. Geological Survey, U.S. Environmental Protection Agency Chesapeake Bay Program Office, Interstate Commission on the Potomac River Basin, Maryland Department of the Environment, Virginia Department of Conservation and Recreation, Virginia Department of Environmental Quality, and the University of Maryland Center for Environmental Science are collaborating on the Chesapeake Bay Regional Watershed Model, using Hydrological Simulation Program - FORTRAN to simulate streamflow and concentrations and loads of nutrients and sediment to Chesapeake Bay. The model will be used to provide information for resource managers. In order to establish a framework for model simulation, digital spatial datasets were created defining the discretization of the model region (including the Chesapeake Bay watershed, as well as the adjacent parts of Maryland, Delaware, and Virginia outside the watershed) into land segments, a stream-reach network, and associated watersheds. Land segmentation was based on county boundaries represented by a 1:100,000-scale digital dataset. Fifty of the 254 counties and incorporated cities in the model region were divided on the basis of physiography and topography, producing a total of 309 land segments. The stream-reach network for the Chesapeake Bay watershed part of the model region was based on the U.S. Geological Survey Chesapeake Bay SPARROW (SPAtially Referenced Regressions On Watershed attributes) model stream-reach network. Because that network was created only for the Chesapeake Bay watershed, the rest of the model region uses a 1:500,000-scale stream-reach network. Streams with mean annual streamflow of less than 100 cubic feet per second were excluded based on attributes from the dataset. Additional changes were made to enhance the data and to allow for inclusion of stream reaches with monitoring data that were not part of the original network. Thirty-meter-resolution Digital Elevation Model data were used to delineate watersheds for each

  8. 78 FR 36212 - Proposed Flood Hazard Determinations

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-17

    ... repository Community address Prince George's County, Maryland, and Incorporated Areas Maps Available for..., Laurel, MD 20707. Unincorporated Areas of Prince George's Prince George's County County. Department of...

  9. University of Maryland MRSEC - For Members: Opportunities

    Science.gov Websites

    . University of Maryland Materials Research Science and Engineering Center Home About Us Leadership Administration Committees Directory Research IRG 1 IRG 2 Seed 1 Seed 2 Seed 3 Highlights Publications Facilities Educational Education Pre-College Programs Homeschool Programs Undergraduate & Graduate Programs Teacher

  10. University of Maryland MRSEC - About Us: Adminsitration

    Science.gov Websites

    . University of Maryland Materials Research Science and Engineering Center Home About Us Leadership Administration Committees Directory Research IRG 1 IRG 2 Seed 1 Seed 2 Seed 3 Highlights Publications Facilities Educational Education Pre-College Programs Homeschool Programs Undergraduate & Graduate Programs Teacher

  11. University of Maryland MRSEC - For Members: Shipping

    Science.gov Websites

    . University of Maryland Materials Research Science and Engineering Center Home About Us Leadership Administration Committees Directory Research IRG 1 IRG 2 Seed 1 Seed 2 Seed 3 Highlights Publications Facilities Educational Education Pre-College Programs Homeschool Programs Undergraduate & Graduate Programs Teacher

  12. University of Maryland MRSEC - For Members: Facilities

    Science.gov Websites

    . University of Maryland Materials Research Science and Engineering Center Home About Us Leadership Administration Committees Directory Research IRG 1 IRG 2 Seed 1 Seed 2 Seed 3 Highlights Publications Facilities Educational Education Pre-College Programs Homeschool Programs Undergraduate & Graduate Programs Teacher

  13. 2. Photocopy of photograph (original print located in Pope & ...

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

    2. Photocopy of photograph (original print located in Pope & Talbot Archives Port Gamble, WA). Unknown Photographer, Circa 1953. View of Port Gamble and surroundings, aerial shot facing west. Port Gamble Bay, townsite and millsite in foreground, Hood Canal and Olympic Mountains in the background. - Port Gamble National Historic Landmark, Bounded by Hood Canal, Port Gamble Bay, State Road 104, & Town Limits, Port Gamble, Kitsap County, WA

  14. Addressing College Drinking as a Statewide Public Health Problem: Key Findings From the Maryland Collaborative.

    PubMed

    Arria, Amelia M; Jernigan, David H

    2018-03-01

    Excessive drinking among college students is a serious and pervasive public health problem. Although much research attention has focused on developing and evaluating evidence-based practices to address college drinking, adoption has been slow. The Maryland Collaborative to Reduce College Drinking and Related Problems was established in 2012 to bring together a network of institutions of higher education in Maryland to collectively address college drinking by using both individual-level and environmental-level evidence-based approaches. In this article, the authors describe the findings of this multilevel, multicomponent statewide initiative. To date, the Maryland Collaborative has succeeded in providing a forum for colleges to share knowledge and experiences, strengthen existing strategies, and engage in a variety of new activities. Administration of an annual student survey has been useful for guiding interventions as well as evaluating progress toward the Maryland Collaborative's goal to measurably reduce high-risk drinking and its radiating consequences on student health, safety, and academic performance and on the communities surrounding college campuses. The experiences of the Maryland Collaborative exemplify real-world implementation of evidence-based approaches to reduce this serious public health problem.

  15. 1981 Maryland Migrant Education State Plan.

    ERIC Educational Resources Information Center

    Friend, Ronn E.; Gates, Francis W.

    Between October 1, 1980 and September 30, 1981, the 1981 migrant education program will serve an estimated 1,109 migrant children in 6 regular and 8 summer school projects in Maryland. Of these children, 422 will be at the elementary level, 366 at the secondary level, and the rest will be in preschool. Blacks compose the largest ethnic group (478)…

  16. The forest-land owners of Maryland

    Treesearch

    Neal P. Kingsley; Thomas W. Birch

    1980-01-01

    Ninety perrent of the commercial forest land in Maryland--2,280,000 acres-is in the hands of some 95,800 owners. Eighty-seven percent of these owners are individuals. The average individual owner is middle aged, well educated, relatively affluent, and from a rural or farm background. Twenty-two percent of the private owners have harvested timber from their land. These...

  17. Adult Learners: The University of Maryland Approach.

    ERIC Educational Resources Information Center

    Wolvin, Andrew D.

    1991-01-01

    Discusses the need to approach adult education differently from the teaching of children. Reminds educators that adult learners possess a wealth of experiences and distinctive job-related skills and needs. Describes the University of Maryland's adult education program, which includes a separate campus, courses at military installations, and…

  18. The Maryland Youth Suicide Prevention School Program.

    ERIC Educational Resources Information Center

    Maryland State Dept. of Education, Baltimore.

    The Maryland State Department of Education developed this framework for a suicide prevention program. The program framework addresses the following goals: (1) increase awareness among school personnel and community awareness among school personnel and community leaders of the incidence of teenage suicide; (2) train school personnel in individual…

  19. MINOTAUR (Maryland's innovative orbital technologically advanced University rocket)

    NASA Technical Reports Server (NTRS)

    Lewis, Mark J.; Akin, Dave; Lind, Charles; Rice, T. (Editor); Vincent, W. (Editor)

    1992-01-01

    Over the past decade, there has been an increasing interest in designing small commercial launch vehicles. Some of these designs include OSC's Pegasus, and AMROC's Aquila. Even though these vehicles are very different in their overall design characteristics, they all share a common thread of being expensive to design and manufacture. Each of these vehicles has an estimated production and operations cost of over $15000/kg of payload. In response to this high cost factor, the University of Maryland is developing a cost-effective alternative launch vehicle, Maryland's Innovative Orbital Technologically Advanced University Rocket (MINOTAUR). A preliminary cost analysis projects that MINOTAUR will cost under $10000/kg of payload. MINOTAUR will also serve as an enriching project devoted to an entirely student-designed-and-developed launch vehicle. This preliminary design of MINOTAUR was developed entirely by undergraduates in the University of Maryland's Space Vehicle Design class. At the start of the project, certain requirements and priorities were established as a basis from which to begin the design phase: (1) carry a 100 kg payload into a 200 km circular orbit; (2) provide maximum student involvement in the design, manufacturing, and launch phases of the project; and (3) use hybrid propulsion throughout. The following is the list of the project's design priorities (from highest to lowest): (1) safety, (2) cost, (3) minimum development time, (4) maximum use of the off-the-shelf components, (5) performance, and (6) minimum use of pyrotechnics.

  20. The Maryland strategic highway safety plan 2006-2010

    DOT National Transportation Integrated Search

    2006-09-01

    When the American Association of State Highway Transportation Officials (AASHTO) led the development of a strategic highway safety plan in 1997, targeting the nations most serious highway safety problems, Maryland was one of the few states in the ...

  1. Taking the "Next Great Step" for Maryland Public Schools: State of Education Report, 2010

    ERIC Educational Resources Information Center

    Maryland State Department of Education, 2010

    2010-01-01

    Maryland public schools continue to pick up honors and receive recognition for the work going on in their classrooms. For the second straight year, Maryland's education system has been ranked as number one in the nation by "Education Week", the nation's leading education publication. The "College Board" followed that up by…

  2. Salinity. Grade 5 Science Language Usage. Maryland School Maryland School Performance Assessment Program (MSPAP): Resource Library. Public Release Task.

    ERIC Educational Resources Information Center

    Maryland State Dept. of Education. Baltimore. Div. of Planning, Results and Information Management.

    One component of the Maryland School Performance Assessment; Program (MSPAP) is the state's performance-based assessments, criterion-referenced tests that require students to apply what they know and can do to solve problems and display other higher-order thinking skills. This document helps parents, teachers, students, and other citizens…

  3. University of Maryland MRSEC - For Members: Publications

    Science.gov Websites

    -MRSEC at the University of Maryland, DMR 0520471." Authors who use MRSEC Shared Experimental Facilities, should acknowledge the MRSEC-SEF: Authors who use MRSEC Shared Experimental Facilities and also Experimental Facilities, but do not receive other MRSEC support should still acknowledge the MRSEC-SEF: "

  4. Stream salamanders as indicators of stream quality in Maryland, USA

    USGS Publications Warehouse

    Southerland, M.T.; Jung, R.E.; Baxter, D.P.; Chellman, I.C.; Mercurio, G.; Volstad, J.H.

    2004-01-01

    Biological indicators are critical to the protection of small, headwater streams and the ecological values they provide. Maryland and other state monitoring programs have determined that fish indicators are ineffective in small streams, where stream salamanders may replace fish as top predators. Because of their life history, physiology, abundance, and ubiquity, stream salamanders are likely representative of biological integrity in these streams. The goal of this study was to determine whether stream salamanders are effective indicators of ecological conditions across biogeographic regions and gradients of human disturbance. During the summers of 2001 and 2002, we intensively surveyed for stream salamanders at 76 stream sites located west of the Maryland Coastal Plain, sites also monitored by the Maryland Biological Stream Survey (MBSS) and City of Gaithersburg. We found 1,584 stream salamanders, including all eight species known in Maryland, using two 15 ? 2 m transects and two 4 m2 quadrats that spanned both stream bank and channel. We performed removal sampling on transects to estimate salamander species detection probabilities, which ranged from 0.67-0.85. Stepwise regressions identified 15 of 52 non-salamander variables, representing water quality, physical habitat, land use, and biological conditions, which best predicted salamander metrics. Indicator development involved (1) identifying reference (non-degraded) and degraded sites (using percent forest, shading, riparian buffer width, aesthetic rating, and benthic macroinvertebrate and fish indices of biotic integrity); (2) testing 12 candidate salamander metrics (representing species richness and composition, abundance, species tolerance, and reproductive function) for their ability to distinguish reference from degraded sites; and (3) combining metrics into an index that effectively discriminated sites according to known stream conditions. Final indices for Highlands, Piedmont, and Non-Coastal Plain

  5. 75 FR 72963 - Approval and Promulgation of Air Quality Implementation Plans; Maryland; Control of Volatile...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-11-29

    ... Promulgation of Air Quality Implementation Plans; Maryland; Control of Volatile Organic Compound Emissions From Industrial Solvent Cleaning Operations; Withdrawal of Direct Final Rule AGENCY: Environmental Protection... withdrawing the direct final rule to approve revisions to Maryland's State Implementation Plan (SIP). This SIP...

  6. 76 FR 64020 - Approval and Promulgation of Air Quality Implementation Plans; Maryland; Adoption of Control...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-17

    ... Plastic Parts and Business Machines Coatings AGENCY: Environmental Protection Agency (EPA). ACTION: Final....19.07-2, Plastic Parts and Business Machines Coating. Maryland's SIP revision meets the requirement... Techniques Guidelines (CTG) standards for plastic parts and business machines coatings and will help Maryland...

  7. In the Public Interest: Law, Government, and Media. Maryland Women's History Resource Packet--1986.

    ERIC Educational Resources Information Center

    Maryland State Commission for Women, Baltimore.

    Designed to be used for National Women's History Week (March 2-8), this 1986 Maryland women's history resource packet centers around Maryland women who have made significant volunteer and career contributions in the areas of government, law, and the public interest media. The packet begins with suggested student activity lists and activity sheets…

  8. College Student Employment: Patterns and Profiles. Maryland Longitudinal Study Research Highlights. Research Report 7.

    ERIC Educational Resources Information Center

    Maryland Univ., College Park. Maryland Longitudinal Study Steering Committee.

    As part of the Maryland Longitudinal Study of 772 students entering the University of Maryland, College Park (UMCP) in the fall of 1980, a study was conducted to determine patterns of college student employment and profiles of students in different employment categories. Findings included the following: (1) approximately 40% of students were…

  9. Violent Death Reporting in Maryland: Demographic Variability in Data Completeness.

    PubMed

    Smith, Meghan L; Akinyemi, Adebola A; Stanley, Jennifer L; Mitchell, Clifford S

    2017-10-01

    To analyze the completeness of precipitating circumstance information recorded in the Maryland Violent Death Reporting System and identify limitations that could affect the system's utility. We reviewed all violent deaths among Maryland residents for the years 2003 through 2014 (n = 19 161). We assessed the presence of precipitating circumstance data (abstracted from medical examiner and police reports) by manner of death and demographic characteristics. We further evaluated homicide records with multivariable regression. Demographic variation in circumstance reporting was most pronounced for homicide. Circumstances were known for 53.2% of homicide cases, and this percentage was lower among non-Latino Blacks (48.2%), males (50.7%), those aged 18 to 25 years (47.9%), those residing in jurisdictions with higher-than-average homicide rates (46.1%), and those who died outside in a public place (43.4%) or in a correctional facility (48.9%). With the exception of male gender, these factors were significantly associated with circumstance reporting when we controlled for demographic and situational variables. Circumstance reporting was least likely among groups most at risk for homicide in Maryland. Collection of circumstance data for the most affected groups should be strengthened to help develop better prevention strategies.

  10. 78 FR 11725 - Maryland Disaster Number MD-00024

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-19

    ... SMALL BUSINESS ADMINISTRATION [Disaster Declaration 13425 and 13426] Maryland Disaster Number MD-00024 AGENCY: U.S. Small Business Administration. ACTION: Amendment 1. SUMMARY: This is an amendment of... information in the original declaration remains unchanged. (Catalog of Federal Domestic Assistance Numbers...

  11. 76 FR 70527 - Maryland Disaster Number MD-00018

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-14

    ... SMALL BUSINESS ADMINISTRATION [Disaster Declaration 12874 and 12875] Maryland Disaster Number MD-00018 AGENCY: U.S. Small Business Administration. ACTION: Amendment 1. SUMMARY: This is an amendment of... the original declaration remains unchanged .(Catalog of Federal Domestic Assistance Numbers 59002 and...

  12. A preview of Maryland's forest resource

    Treesearch

    Douglas S. Powell; Teresa M. Bowers

    1978-01-01

    The 1976 forest survey of Maryland shows that the State has 2.5 million acres of commercial forest land, a decline of 13 percent since 1964. Ninety percent of it is in private ownership; 56 percent in sawtimber stands; 46 percent in the oak-hickory forest type. Timber volume has increased to 3.5 billion cubic feet of growing stock and 8.2 billion board feet of...

  13. Ground-water quality and discharge to Chincoteague and Sinepuxent Bays adjacent to Assateague Island National Seashore, Maryland

    USGS Publications Warehouse

    Dillow, Jonathan J.A.; Banks, William S.L.; Smigaj, Michael J.

    2002-01-01

    The U.S. Geological Survey, in cooperation with the Maryland Department of the Environment and the Wisconsin State Laboratory of Hygiene, conducted a study to characterize the occurrence and distribution of viral contamination in small (withdrawing less than 10,000 gallons per day) public water-supply wells screened in the shallow aquifer in the Piedmont Physiographic Province in Baltimore and Harford Counties, Maryland. Two hundred sixty-three small public water-supply wells were in operation in these counties during the spring of 2000. Ninety-one of these sites were selected for sampling using a methodology that distributed the samples evenly over the population and the spatial extent of the study area. Each site, and its potential susceptibility to microbiological contamination, was evaluated with regard to hole depth, casing interval, and open interval. Each site was evaluated using characteristics such as on-site geology and on-site land use.Samples were collected by pumping between 200 and 400 gallons of untreated well water through an electropositive cartridge filter. Water concentrates were subjected to cell-culture assay for the detection of culturable viruses and reverse-transcription polymerase chain reaction/gene probe assays to detect viral ribonucleic acid; grab samples were analyzed for somatic and male-specific coliphages, Bacteroides fragilis, Clostridium perfringens, enterococci, Escherichia coli, total coliforms, total oxidized nitrogen, nitrite, organic nitrogen, total phosphate, ortho-phosphate, calcium, magnesium, sodium, potas-sium, chloride, sulfate, iron, acid-neutralizing capacity, pH, specific conductance, temperature, and dissolved oxygen.One sample tested positive for the presence of the ribonucleic acid of rotavirus through poly-merase chain-reaction analysis. Twenty-nine per-cent of the samples (26 of 90) had bacterial con-tamination. About 7 percent of the samples (6 of 90) were contaminated with either male-specific coliphage

  14. Local Health Departments' Promotion of Mental Health Care and Reductions in 30-Day All-Cause Readmission Rates in Maryland.

    PubMed

    Chen, Jie; Novak, Priscilla; Barath, Deanna; Goldman, Howard; Mortensen, Karoline

    2018-02-01

    Individuals affected with mental health conditions, including mood disorders and substance abuse, are at an increased risk of hospital readmission. The objective of this study is to examine whether local health departments' (LHDs) active roles of promoting mental health are associated with reductions in 30-day all-cause readmission rates, a common quality metric. Using datasets linked from multiple sources, including 2012-2013 State Inpatient Databases for the State of Maryland, the National Association of County and City Health Officials Profiles Survey, the Area Health Resource File, and US Census data, we employed multivariate logistic models to examine whether LHDs' active provision of mental health preventive care, mental health services, and health promotion were associated with the likelihood of having any 30-day all-cause readmission. Multivariate logistic regressions showed that LHDs' provision of mental health preventive care, mental health services, and health promotion were negatively associated with the likelihoods of having any 30-day readmission for adults 18-64 years old (odds ratios=0.71-0.82, P<0.001), and adults 65 and above (odds ratios=0.61-0.63, P<0.001, preventive care and services, respectively). These estimated associations were more prominent among individuals with mental illness and/or substance use disorders, African Americans, Medicare, and Medicaid enrollees. Our results suggest that LHDs in Maryland that engage in mental health prevention, promotion, and coordination activities are associated with benefits for residents and for the health care system at large. Additional research is needed to evaluate LHD activities in other states to determine if these results are generalizable.

  15. An Archeological Overview and Management Plan for the Harry Diamond Laboratories, Adelphi, Maryland.

    DTIC Science & Technology

    1985-07-01

    WORK ON HARRY DIAMOND LABORATORY- ADELPHI, MARYLAND A number of prehistoric and historic sites have been reported in the vicinity of HDLA. Attempts...AD-Rftl 054 AN ARCHEOLOGICAL OVERVIEW AND NANAGENENT PLAN FOR THE Sui HARRY DIAMOND LABORATORIES ADELPHI NARYLRNDCU) U NLRSIFEDENYIROSPHERE CO NEW...An Archeological Overview and Management Plan r ifor the Harry Diamond Laboratories - Adelphi, Maryland Under Contract CX4000-3-0018 with the National

  16. The Effect of Medicaid Expansion on Utilization in Maryland Emergency Departments.

    PubMed

    Klein, Eili Y; Levin, Scott; Toerper, Matthew F; Makowsky, Michael D; Xu, Tim; Cole, Gai; Kelen, Gabor D

    2017-11-01

    A proposed benefit of expanding Medicaid eligibility under the Patient Protection and Affordable Care Act (ACA) was a reduction in emergency department (ED) utilization for primary care needs. Pre-ACA studies found that new Medicaid enrollees increased their ED utilization rates, but the effect on system-level ED visits was less clear. Our objective was to estimate the effect of Medicaid expansion on aggregate and individual-based ED utilization patterns within Maryland. We performed a retrospective cross-sectional study of ED utilization patterns across Maryland, using data from Maryland's Health Services Cost Review Commission. We also analyzed utilization differences between pre-ACA (July 2012 to December 2013) uninsured patients who returned post-ACA (July 2014 to December 2015). The total number of ED visits in Maryland decreased by 36,531 (-1.2%) between the 6 quarters pre-ACA and the 6 quarters post-ACA. Medicaid-covered ED visits increased from 23.3% to 28.9% (159,004 additional visits), whereas uninsured patient visits decreased from 16.3% to 10.4% (181,607 fewer visits). Coverage by other insurance types remained largely stable between periods. We found no significant relationship between Medicaid expansion and changes in ED volume by hospital. For patients uninsured pre-ACA who returned post-ACA, the adjusted visits per person during 6 quarters was 2.38 (95% confidence interval 2.35 to 2.40) for those newly enrolled in Medicaid post-ACA compared with 1.66 (95% confidence interval 1.64 to 1.68) for those remaining uninsured. There was a substantial increase in patients covered by Medicaid in the post-ACA period, but this did not significantly affect total ED volume. Returning patients newly enrolled in Medicaid visited the ED more than their uninsured counterparts; however, this cohort accounted for only a small percentage of total ED visits in Maryland. Copyright © 2017 American College of Emergency Physicians. Published by Elsevier Inc. All rights

  17. 76 FR 9705 - Approval and Promulgation of Air Quality Implementation Plans; Maryland; Amendment to the...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-02-22

    ... Promulgation of Air Quality Implementation Plans; Maryland; Amendment to the Definition of Fuel-Burning... definition of ``fuel-burning equipment.'' The revision removes the word ``furnace'' from the definition of ``fuel-burning equipment'' in one of Maryland's regulations and also removes the redundant definition of...

  18. 75 FR 74712 - Planet Energy (Maryland) Corp.; Supplemental Notice That Initial Market-Based Rate Filing...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-01

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket No. ER11-2168-000] Planet Energy (Maryland) Corp.; Supplemental Notice That Initial Market-Based Rate Filing Includes Request for Blanket... proceeding, of Planet Energy (Maryland) Corp.'s application for market-based rate authority, with an...

  19. Maryland Family Support Services Consortium. Final Report.

    ERIC Educational Resources Information Center

    Gardner, James F.; Markowitz, Ricka Keeney

    The Maryland Family Support Services Consortium is a 3-year demonstration project which developed unique family support models at five sites serving the needs of families with a developmentally disabled child (ages birth to 21). Caseworkers provided direct intensive services to 224 families over the 3-year period, including counseling, liaison and…

  20. State mental health policy: Maryland's shared leadership approach to mental health transformation: partnerships that work.

    PubMed

    Semansky, Rafael M

    2012-07-01

    In 2005, Maryland received a mental health transformation grant from the Substance Abuse and Mental Health Services Administration. Maryland's transformation efforts have differed from those in other grantee states and have evolved into a shared leadership approach that harnesses the power of leaders from all sectors of the community. This column describes Maryland's reform efforts, focusing in particular on the development of the position of a peer employment specialist to improve placement of consumers in employment. This shared leadership approach has the potential to enhance long-term sustainability of reform initiatives and uses fewer state resources.

  1. 78 FR 3496 - Maryland Disaster Number MD-00025

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-16

    ... SMALL BUSINESS ADMINISTRATION [Disaster Declaration 13394 and 13395] Maryland Disaster Number MD-00025 AGENCY: U.S. Small Business Administration. ACTION: Amendment 3. SUMMARY: This is an amendment of.... (Catalog of Federal Domestic Assistance Numbers 59002 and 59008) James E. Rivera, Associate Administrator...

  2. 76 FR 70528 - Maryland Disaster Number MD-00018

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-14

    ... SMALL BUSINESS ADMINISTRATION [Disaster Declaration 12874 and 12875] Maryland Disaster Number MD-00018 AGENCY: U.S. Small Business Administration. ACTION: Amendment 2. SUMMARY: This is an amendment of... declaration remains unchanged. (Catalog of Federal Domestic Assistance Numbers 59002 and 59008) James E...

  3. 77 FR 74908 - Maryland Disaster Number MD-00025

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-18

    ... SMALL BUSINESS ADMINISTRATION [Disaster Declaration 13394 and 13395] Maryland Disaster Number MD-00025 AGENCY: U.S. Small Business Administration. ACTION: Amendment 1. SUMMARY: This is an amendment of... declaration remains unchanged. (Catalog of Federal Domestic Assistance Numbers 59002 and 59008) James E...

  4. Functional Reading Test Results; Maryland Assessment of State Goals in Reading. Maryland Accountability Program Year IV, School Year 1976-1977.

    ERIC Educational Resources Information Center

    Maryland State Dept. of Education, Baltimore.

    The 1973 statewide (Maryland) educational accountability plan, for which this report was compiled, called for the development and establishment of statewide and local goals in reading, writing, and mathematics; a comprehensive and uniform statewide testing program; procedures for collecting data on student, home, community, and school…

  5. Urban-Rural Differences in Suicide in the State of Maryland: The Role of Firearms.

    PubMed

    Nestadt, Paul S; Triplett, Patrick; Fowler, David R; Mojtabai, Ramin

    2017-10-01

    To assess whether the use of firearms explains rural-urban differences in suicide rates. We performed a retrospective analysis on all 6196 well-characterized adult suicides in Maryland from 2003 through 2015. We computed rate ratios by using census data and then stratified by sex, with adjustment for age and race. Suicide rates were higher in rural compared with urban counties. However, the higher rural suicide rates were limited to firearm suicides (incident rate ratio [IRR] = 1.66; 95% confidence interval [CI] = 1.20, 2.31). Nonfirearm suicide rates were not significantly higher in rural settings. Furthermore, 89% of firearm suicides occurred in men and the higher rural firearm suicide rate was limited to men (IRR = 1.36; 95% CI = 1.09, 1.69). Women were significantly less likely to complete suicide in rural areas (IRR = 0.63; 95% CI = 0.43, 0.94), regardless of method. Male firearm use drives the increased rate of suicide in rural areas. The opposite associations between urbanicity and suicide in men and women may be driven by the male preference for firearms as a method for committing suicide.

  6. 77 FR 50969 - Approval and Promulgation of Air Quality Implementation Plans; Maryland; Low Emission Vehicle...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-23

    ... program has two objectives. The first is to reduce emissions of nitrogen oxides (NO X ) and volatile.... Maryland's regulations established initial NMOG credit balances for manufacturer credit account balances to... established ZEV credit account balances to provide parity between California and Maryland with respect to the...

  7. Dual Enrollment in Maryland and Baltimore City: An Examination of Program Components and Design

    ERIC Educational Resources Information Center

    Sunderman, Gail L.

    2017-01-01

    Maryland's College and Career Act of 2013 recognized the potential of dual enrollment and called for the expansion of it in the state. According to a December 2016 report to the Maryland General Assembly, however, only 2% of Baltimore City public 12th grade students participated in dual enrollment opportunities in 2015 as compared with a state…

  8. Goals for Education. Challenge to Lead: Maryland

    ERIC Educational Resources Information Center

    Southern Regional Education Board, 2004

    2004-01-01

    The Southern Regional Education Board adopted Challenge to Lead education goals to focus and hold attention on educational improvement in its 16 states. This report provides an overview of Maryland's progress toward meeting these important goals. Challenge to Lead asserts: "With almost half of the new jobs created in America in the 1990s,…

  9. Maryland's Library Public Awareness Campaign for CTE

    ERIC Educational Resources Information Center

    Gilli, Lynne M.; Lohnes, Marjorie R.

    2011-01-01

    Career and technical education (CTE) has grown and changed tremendously over the past 20 years. While great strides have been made in upgrading CTE in Maryland, many parents, students, policymakers and community members were not familiar with the "new and improved" CTE. In a bid to spread the word about the "new and improved"…

  10. 77 FR 1411 - Approval and Promulgation of Air Quality Implementation Plans; District of Columbia, Maryland...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-10

    ...; Determinations of Attainment of the 1997 Fine Particle Standard for the Metropolitan Washington, DC-MD-VA and...-Maryland-Virginia (DC-MD-VA) fine particle (PM 2.5 ) nonattainment area and the Martinsburg-Hagerstown... determined that the Metropolitan Washington, District of Columbia-Maryland-Virginia (DC-MD-VA) fine particle...

  11. Adjustable repetition-rate multiplication of optical pulses using fractional temporal Talbot effect with preceded binary intensity modulation

    NASA Astrophysics Data System (ADS)

    Xie, Qijie; Zheng, Bofang; Shu, Chester

    2017-05-01

    We demonstrate a simple approach for adjustable multiplication of optical pulses in a fiber using the temporal Talbot effect. Binary electrical patterns are used to control the multiplication factor in our approach. The input 10 GHz picosecond pulses are pedestal-free and are shaped directly from a CW laser. The pulses are then intensity modulated by different sets of binary patterns prior to entering a fiber of fixed dispersion. Tunable repetition-rate multiplication by different factors of 2, 4, and 8 have been achieved and up to 80 GHz pulse train has been experimentally generated. We also evaluate numerically the influence of the extinction ratio of the intensity modulator on the performance of the multiplied pulse train. In addition, the impact of the modulator bias on the uniformity of the output pulses has also been analyzed through simulation and experiment and a good agreement is reached. Last, we perform numerical simulation on the RF spectral characteristics of the output pulses. The insensitivity of the signal-to-subharmonic noise ratio (SSNR) to the laser linewidth shows that our multiplication scheme is highly tolerant to the incoherence of the input optical pulses.

  12. 76 FR 9656 - Approval and Promulgation of the Air Quality Implementation Plans; Maryland; Control of Volatile...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-02-22

    ... Promulgation of the Air Quality Implementation Plans; Maryland; Control of Volatile Organic Compound Emissions From Industrial Solvent Cleaning Operations AGENCY: Environmental Protection Agency (EPA). ACTION... Plan (SIP). The revision was submitted by the Maryland Department of the Environment (MDE) to establish...

  13. Tree planting - strip-mined area in Maryland

    Treesearch

    Fred L. Bagley

    1980-01-01

    This report is written to elucidate some of the problems encountered in the planting of trees on strip-mined areas in Maryland. When problems are recognized, normally a solution (or at least, an improvement) can be instituted to alleviate the problem. The methods cited herein are those of experienced foresters engaged in strip-mine planting during the past seventeen...

  14. The Economic Impacts of Maryland Community Colleges.

    ERIC Educational Resources Information Center

    Linthicum, Dorothy S.

    The problem addressed in this study is the identification of economic benefits generated by the 17 Maryland community colleges, and their associated costs. Figures for fiscal year 1977 are used to assess the statewide impact of the community colleges on the business sector, in terms of total impact of expenditures by the colleges and their staffs,…

  15. Geology and biostratigraphy of the Potomac River cliffs at Stratford Hall, Westmoreland County, Virginia

    USGS Publications Warehouse

    Weems, Robert E.; Edwards, Lucy E.; Landacre, Bryan D.

    2017-01-01

    The cliffs along the Potomac River at Stratford Hall display extensive exposures of Miocene marine strata that belong successively to the Calvert, Choptank, St. Marys, and Eastover Formations. Within the lower part of this sequence, in the Calvert and Choptank Formations, there is well-developed cyclic stratigraphy. Above the Miocene units lies the marginal marine to deltaic Pleistocene Bacons Castle Formation, which is the highest and youngest formation exposed in the cliffs. The goals of this field trip guide are to (1) show the Miocene formations exposed in the cliffs and discuss the paleoenvironments within which they formed, (2) demonstrate the cyclicity in the Miocene marine formations and discuss its origin, (3) compare and contrast the section exposed at the Stratford and Nomini Cliffs with the classic Miocene Calvert Cliffs sequence exposed to the northeast in Calvert County, Maryland, and the Miocene sequence recovered in the Haynesville cores to the southeast in Richmond County, Virginia, (4) discuss and explain why a detailed correlation among these three places has been so difficult to attain, and (5) show typical lithologies of the Bacons Castle Formation and discuss the paleoenvironments in which they formed.

  16. Developing Maryland's Technology Education Leaders for the 21st Century: Technology Education Leadership Project (TELP)

    ERIC Educational Resources Information Center

    Copeland, Leon L., Sr.; Gray, Robert C.

    2002-01-01

    Through the competitive proposal process, the University of Maryland Eastern Shore (UMES) received a three-year Teacher Enhancement Grant from the National Science Foundation (NSF) in March 1998. The Maryland State Department of Education provided additional funds for the grant. The purpose of the grant was to administer the Technology Education…

  17. 76 FR 72020 - Virginia Disaster #VA-00039

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-21

    ... the disaster: Primary Counties: Fairfax, Prince William. Contiguous Counties: Virginia: Alexandria... City, Stafford. District of Columbia. Maryland: Charles, Montgomery, Prince George's. The Interest...

  18. Race to the Top. Maryland Report. Year 2: School Year 2011-2012. [State-Specific Summary Report

    ERIC Educational Resources Information Center

    US Department of Education, 2013

    2013-01-01

    This State-specific summary report serves as an assessment of Maryland's Year 2 Race to the Top implementation, highlighting successes and accomplishments, identifying challenges, and providing lessons learned from implementation from approximately September 2011 through September 2012. Maryland's Year 2 accomplishments included implementing…

  19. Collaborative Partnerships in Maryland To Reduce Adult Illiteracy.

    ERIC Educational Resources Information Center

    National Inst. for Work and Learning, Washington, DC.

    A study examined existing collaborative activities between private or public employers and adult basic education (ABE), general educational development (GED), and English as a second language (ESL) programs in Maryland's 24 local education agencies. Information was gathered directly from 16 ABE administrators (including 4 community college…

  20. A LANDSCAPE DEVELOPMENT INTENSITY MAP OF MARYLAND, USA

    EPA Science Inventory

    We present a map of human development intensity for central and eastern Maryland using an index derived from energy systems principles. Brown and Vivas developed a measure of the intensity of human development based on the nonrenewable energy use per unit area as an index to exp...

  1. University of Maryland MRSEC - Facilities: Float Zone Furnace

    Science.gov Websites

    . University of Maryland Materials Research Science and Engineering Center Home About Us Leadership Administration Committees Directory Research IRG 1 IRG 2 Seed 1 Seed 2 Seed 3 Highlights Publications Facilities Educational Education Pre-College Programs Homeschool Programs Undergraduate & Graduate Programs Teacher

  2. The relationship between impaired driving crashes and beliefs about impaired driving: do residents in high crash rate counties have greater concerns about impaired driving?

    PubMed

    Beck, Kenneth H; Yan, Alice F; Wang, Min Qi; Kerns, Timothy J; Burch, Cynthia A

    2009-04-01

    The purpose of this investigation was to examine the relationship between impaired driving crashes and public beliefs and concerns about impaired driving across each of Maryland's twenty-four counties (including Baltimore City). It was hypothesized that residents of counties that experience higher impaired driving crashes would express more concerns about impaired driving and perceive more risks about driving impaired than residents of counties that have lower rates of impaired driving. Data for alcohol impaired driving crashes were obtained for the years 2004-2006. These data were compared to public opinion data that was obtained annually by random-digit-dial telephone surveys from 2004 to 2007. Concerns about drunk driving as well as perceptions of the likelihood of being stopped by the police if one were to drive after having too much to drink were related to counties with higher serious impaired driving crash rates, as were perceptions that the police and the legal system were too lenient. Perceptions about the likelihood of being stopped by the police were higher in those counties with more impaired driving enforcement activity. Perceptions of concern appear to be shaped more by crash exposure than enforcement activity. Campaigns that address impaired driving prevention should substantially increase enforcement, strengthen the adjudication process of impaired drivers, and emphasize the potential seriousness of drinking-driving crashes in their promotional activities.

  3. A comprehensive engineering analysis of motorcycle crashes in Maryland.

    DOT National Transportation Integrated Search

    2010-12-01

    The goal of this study was to identify recurring or common road characteristics of motorcycle crashes : in Maryland from 1998 to 2007. Motorcycle crash data was obtained from the National Highway : Traffic Safety Administrations Crash Outcome Data...

  4. Salmonellosis in passerine birds in Maryland and West Virginia

    USGS Publications Warehouse

    Locke, L.N.; Shillinger, R.B.; Jareed, T.

    1973-01-01

    Salmonella typhimurium was responsible for a die-off of evening grosbeaks (Hesperiphona vespertina) at Elkins, West Virginia, and was isolated from a pine siskin (Spinus pinus) collected at the site of a die-off near Baltimore, Maryland.

  5. The National Higher Education and Workforce Initiative: Strategy in Action: Building the Cybersecurity Workforce in Maryland

    ERIC Educational Resources Information Center

    Business-Higher Education Forum, 2014

    2014-01-01

    The Business-Higher Education Forum (BHEF) has achieved particular success in operationalizing the National Higher Education and Workforce Initiative (HEWI) in Maryland around cybersecurity. Leveraging its membership of corporate CEOs, university presidents, and government agency leaders, BHEF partnered with the University System of Maryland to…

  6. 77 FR 44146 - Approval and Promulgation of Air Quality Implementation Plans; Maryland; Control of Iron and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-27

    ... taking direct final action to approve revisions to the Maryland State Implementation Plan (SIP) submitted... steelmaking facility (Sparrows Point) is the only sintering plant located in the State of Maryland. The... emissions of particulate matter, continuously monitoring compliance with specified pressure drop and flow...

  7. Getting Ready: The 2010-2011 Maryland School Readiness Report. Children Entering School Ready to Learn

    ERIC Educational Resources Information Center

    Maryland State Department of Education, 2011

    2011-01-01

    This report was developed in partnership with Ready At Five. It lays out the critical importance of children starting school fully prepared to succeed in kindergarten. Most importantly, the report shares what everyone has learned from the 2010-2011 Maryland Model for School Readiness (MMSR) data about the school readiness of Maryland's children:…

  8. Maryland Annual Performance Report, 1993. Schools for Success.

    ERIC Educational Resources Information Center

    Maryland State Dept. of Education, Baltimore. Div. of Career Tech. and Adult Learning.

    During fiscal year 1993, enrollment in secondary and postsecondary vocational education (VE) programs in Maryland totaled 328,792 and 82,464, respectively. Career and technology education was provided to the following: 3,975 secondary disabled individuals, 766 disabled adults and postsecondary students, 7,603 secondary disadvantaged students,…

  9. Haemoproteus, a blood parasite, in domestic pigeons and mourning doves in Maryland

    USGS Publications Warehouse

    Knisley, J.O.; Herman, C.M.

    1967-01-01

    The occurrence of Haemoproteus in pigeons throughout the world and in mourning doves in the United States is reviewed. Haemoproteus has previously been reported only once from pigeons in Maryland. During this study it was found in all of 18 pigeons from one area but in none of 12 from an adjacent area. No infections were found in 90 Maryland mourning doves. All of the 10 mourning doves from Florida were infected whereas 60 nestlings from Texas and Mississippi had no parasites. None was found in 358 nestling white-winged doves from Texas.

  10. Forest Health Monitoring in Maryland 1996-1999

    Treesearch

    Northeastern Research Station

    2003-01-01

    The National Forest Health Monitoring (FHM) program monitors the long-term status, changes and trends in the health of forest ecosystems and is conducted in cooperation with individual states. In Maryland, 40 FHM plots were established in 1991. Beginning in 1998, 95 plots were added. Each plot is a series of four fixed-area circular plots. Most tree measurements are...

  11. Will you be the last physician practicing in Maryland? A workforce study update.

    PubMed

    Rockower, Stephen

    2008-01-01

    There are not enough practicing physicians in Maryland. And the decreasing numbers will only get worse in the next 5-10 years. The specialties most affected are family medicine, emergency medicine, and pediatrics, but most other specialties are also affected. A large percentage of physicians are age 55 and older and will be retiring in the next few years. Incoming physicians and residents staying in Maryland will not be sufficient to maintain adequate numbers of doctors for the population.

  12. Race to the Top. Maryland Report. Year 4: School Year 2013-2014. [State-Specific Summary Report

    ERIC Educational Resources Information Center

    US Department of Education, 2015

    2015-01-01

    This State-specific summary report serves as an assessment of Maryland's Year 4 Race to the Top implementation, highlighting successes and accomplishments, identifying challenges, and providing lessons learned from the implementation process from approximately September 2013 through September 2014. During Year 4, Maryland supported educators as…

  13. The NASA-sponsored Maryland center for hypersonic education and research

    NASA Technical Reports Server (NTRS)

    Lewis, Mark J.; Gupta, Ashwani K.

    1995-01-01

    The Office of Aeronautics of the National Aeronautics and Space Administration has established a program to support university programs in the field of hypersonic flight. Beginning in the fall of 1993, three universities, including the University of Maryland at College Park, were selected to participate in this activity. The program at the University of Maryland includes faculty in the Department of Aerospace Engineering and Department of Mechanical Engineering, and provides a multidisciplinary environment for graduate and undergraduate students to study and conduct research in the field of hypersonic flight. Ongoing projects cover the range of applications from cruisers through transatmospheric and reentry vehicles. Research activities, focused on propulsion, fluid dynamics, inverse design, and vehicle optimization and integration, are conducted in conjuntion with industrial partners and government laboratories.

  14. Selected Financial and Enrollment Data: Maryland Community Colleges.

    ERIC Educational Resources Information Center

    Maryland State Board for Community Colleges, Annapolis.

    Financial and enrollment data for Maryland community colleges are provided in this report. Section I presents statewide data for higher education in general, including statistics on credit enrollments by educational segment and political subdivision, and on actual and projected births and high school graduates for 1961-1994. Section II provides…

  15. Maryland Annual Performance Report, 1994. Schools for Success.

    ERIC Educational Resources Information Center

    Maryland State Dept. of Education, Baltimore. Div. of Career Tech. and Adult Learning.

    During fiscal year 1994, enrollment in secondary and postsecondary vocational education (VE) programs in Maryland totaled 201,570 and 66,331, respectively. Career and technology education was provided to a total of 3,664 secondary disabled individuals, 762 disabled adults and postsecondary students, 6,177 secondary disadvantaged students, 6,221…

  16. 77 FR 25901 - Approval and Promulgation of Air Quality Implementation Plans; Maryland; Removal of the 1980...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-02

    ... Promulgation of Air Quality Implementation Plans; Maryland; Removal of the 1980 Consent Order for the Maryland... Consent Order is no longer required to satisfy any applicable Federal regulations and the Clean Air Act... Science, Air Protection Division, Mailcode 3AP00, U.S. Environmental Protection Agency, Region III, 1650...

  17. Race to the Top. Maryland Report. Year 3: School Year 2012-2013. [State-Specific Summary Report

    ERIC Educational Resources Information Center

    US Department of Education, 2014

    2014-01-01

    This State-specific summary report serves as an assessment of Maryland's Year 3 Race to the Top implementation, highlighting successes and accomplishments, identifying challenges, and providing lessons learned from the implementation process. During Year 3 Maryland continued to prepare educators to fully implement the Common Core State Standards…

  18. 77 FR 42686 - Approval and Promulgation of Air Quality Implementation Plans; Maryland; the 2002 Base Year...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-20

    ... Promulgation of Air Quality Implementation Plans; Maryland; the 2002 Base Year Inventory AGENCY: Environmental... matter (PM 2.5 ) 2002 base year emissions inventory portion of the Maryland State Implementation Plan... National Ambient Air Quality Standard (NAAQS) SIP. EPA is proposing to approve the 2002 base year PM 2.5...

  19. Changing Lives: The Baltimore City Community College Life Sciences Partnership with the University of Maryland, Baltimore

    ERIC Educational Resources Information Center

    Carroll, Vanessa G.; Harris-Bondima, Michelle; Norris, Kathleen Kennedy; Williams, Carolane

    2010-01-01

    Baltimore City Community College (BCCC) leveraged heightened student interest and enrollment in the sciences and allied health with Maryland's world-leading biotechnology industry to build a community college life sciences learning and research center right on the University of Maryland, Baltimore's downtown BioPark campus. The BCCC Life Sciences…

  20. Sailor: Maryland's Online Public Information Network. Sailor Network Assessment Final Report: Findings and Future Sailor Network Development.

    ERIC Educational Resources Information Center

    Bertot, John Carlo; McClure, Charles R.

    This report describes the results of an assessment of Sailor, Maryland's Online Public Information Network, which provides statewide Internet connection to 100% of Maryland public libraries. The concept of a "statewide networked environment" includes information services, products, hardware and software, telecommunications…

  1. Class of 2014 Advanced Placement and International Baccalaureate Exam Participation and Performance. Memorandum

    ERIC Educational Resources Information Center

    Sanderson, Geoffrey T.

    2015-01-01

    Beginning in 2006, Maryland has led the nation as the state with the highest percentage of graduates who earned one or more Advanced Placement (AP) exam scores of 3 or higher. Students in the Montgomery County (Maryland) Public Schools (MCPS) Class of 2014 continued to outperform students in the state of Maryland on AP examinations based on AP…

  2. 3. View of Port Gamble commercial district, facing south from ...

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

    3. View of Port Gamble commercial district, facing south from intersection of Rainier Avenue with Walker Street. Pope and Talbot office and general store building in left foreground, Walker-Ames House in left background. Community Hall in right foreground, masonic lodge in right background, fire station between hall and lodge. - Port Gamble National Historic Landmark, Bounded by Hood Canal, Port Gamble Bay, State Road 104, & Town Limits, Port Gamble, Kitsap County, WA

  3. 33 CFR 165.500 - Safety/Security Zones; Chesapeake Bay, Maryland.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... Safety/Security Zones; Chesapeake Bay, Maryland. (a) Definitions. (1) Certain Dangerous Cargo (CDC) means... surface to bottom, within a 500 yard radius around cruise ships and vessels transporting CDC, LNG, or LHG...

  4. 33 CFR 165.500 - Safety/Security Zones; Chesapeake Bay, Maryland.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Safety/Security Zones; Chesapeake Bay, Maryland. (a) Definitions. (1) Certain Dangerous Cargo (CDC) means... surface to bottom, within a 500 yard radius around cruise ships and vessels transporting CDC, LNG, or LHG...

  5. 33 CFR 165.500 - Safety/Security Zones; Chesapeake Bay, Maryland.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... Safety/Security Zones; Chesapeake Bay, Maryland. (a) Definitions. (1) Certain Dangerous Cargo (CDC) means... surface to bottom, within a 500 yard radius around cruise ships and vessels transporting CDC, LNG, or LHG...

  6. 77 FR 73313 - Approval and Promulgation of Air Quality Implementation Plans; Maryland; The 2002 Base Year...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-10

    ... Promulgation of Air Quality Implementation Plans; Maryland; The 2002 Base Year Inventory for the Baltimore, MD... approve the fine particulate matter (PM 2.5 ) 2002 base year emissions inventory portion of the State of... Department of the Environment (MDE), on June 6, 2008 for Baltimore, Maryland. The emissions inventory is part...

  7. The Maryland Large-Scale Integrated Neurocognitive Architecture

    DTIC Science & Technology

    2008-03-01

    Visual input enters the network through the lateral geniculate nucleus (LGN) and is passed forward through visual brain regions (V1, V2, and V4...University of Maryland Sponsored by Defense Advanced Research Projects Agency DARPA Order No. V029 APPROVED FOR PUBLIC RELEASE...interpreted as necessarily representing the official policies, either expressed or implied, of the Defense Advanced Research Projects Agency or the U.S

  8. Work plan for conducting an ecological risk assessment at J-Field, Aberdeen Proving Ground, Maryland

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Hlohowskyj, I.; Hayse, J.; Kuperman, R.

    1995-03-01

    The Environmental Management Division of Aberdeen Proving Ground (APG), Maryland, is conducting a remedial investigation and feasibility study (RI/FS) of the J-Field area at APG pursuant to the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), as amended. J-Field is within the Edgewood Area of APG in Harford County, Maryland, and activities at the Edgewood Area since World War II have included the development, manufacture, testing, and destruction of chemical agents and munitions. The J-Field site was used to destroy chemical agents and munitions by open burning and open detonation. This work plan presents the approach proposed to conduct anmore » ecological risk assessment (ERA) as part of the RI/FS program at J-Field. This work plan identifies the locations and types of field studies proposed for each area of concern (AOC), the laboratory studies proposed to evaluate toxicity of media, and the methodology to be used in estimating doses to ecological receptors and discusses the approach that will be used to estimate and evaluate ecological risks at J-Field. Eight AOCs have been identified at J-Field, and the proposed ERA is designed to evaluate the potential for adverse impacts to ecological receptors from contaminated media at each AOC, as well as over the entire J-Field site. The proposed ERA approach consists of three major phases, incorporating field and laboratory studies as well as modeling. Phase 1 includes biotic surveys of the aquatic and terrestrial habitats, biological tissue sampling and analysis, and media toxicity testing at each AOC and appropriate reference locations. Phase 2 includes definitive toxicity testing of media from areas of known or suspected contamination or of media for which the Phase 1 results indicate toxicity or adverse ecological effects. In Phase 3, the uptake models initially developed in Phase 2 will be finalized, and contaminant dose to each receptor from all complete pathways will be estimated.« less

  9. The Maryland Commercial Vehicle Information Systems and Networks (CVISN) prototype project plan : making intelligent use of ITS/CVO

    DOT National Transportation Integrated Search

    1996-05-15

    This document constitutes the project plan for the Maryland Commercial Vehicle : Information Systems and Networks Prototype, a project undertaken by the State of : Maryland in partnership with the Federal Highway Administration, the Commonwealth of :...

  10. Emerald ash borer dispersal in Maryland: go forth young pest

    Treesearch

    Chris Sargent; Dick Bean; Michael Raupp; Alan J. Sawyer

    2009-01-01

    The emerald ash borer (EAB) (Agrilus planipennis Fairmaire), an exotic invasive pest from Asia, was introduced into Maryland in April 2003 via infested nursery stock shipped from Michigan to a nursery in southern...

  11. A new method for fusion, denoising and enhancement of x-ray images retrieved from Talbot-Lau grating interferometry.

    PubMed

    Scholkmann, Felix; Revol, Vincent; Kaufmann, Rolf; Baronowski, Heidrun; Kottler, Christian

    2014-03-21

    This paper introduces a new image denoising, fusion and enhancement framework for combining and optimal visualization of x-ray attenuation contrast (AC), differential phase contrast (DPC) and dark-field contrast (DFC) images retrieved from x-ray Talbot-Lau grating interferometry. The new image fusion framework comprises three steps: (i) denoising each input image (AC, DPC and DFC) through adaptive Wiener filtering, (ii) performing a two-step image fusion process based on the shift-invariant wavelet transform, i.e. first fusing the AC with the DPC image and then fusing the resulting image with the DFC image, and finally (iii) enhancing the fused image to obtain a final image using adaptive histogram equalization, adaptive sharpening and contrast optimization. Application examples are presented for two biological objects (a human tooth and a cherry) and the proposed method is compared to two recently published AC/DPC/DFC image processing techniques. In conclusion, the new framework for the processing of AC, DPC and DFC allows the most relevant features of all three images to be combined in one image while reducing the noise and enhancing adaptively the relevant image features. The newly developed framework may be used in technical and medical applications.

  12. Bird community response to filter strips in Maryland

    USGS Publications Warehouse

    Blank, P.J.; Dively, G.P.; Gill, D.E.; Rewa, C.A.

    2011-01-01

    Filter strips are strips of herbaceous vegetation planted along agricultural field margins adjacent to streams or wetlands and are designed to intercept sediment, nutrients, and agrichemicals. Roughly 16,000 ha of filter strips have been established in Maryland through the United States Department of Agriculture's Conservation Reserve Enhancement Program. Filter strips often represent the only uncultivated herbaceous areas on farmland in Maryland and therefore may be important habitat for early-successional bird species. Most filter strips in Maryland are planted to either native warm-season grasses or cool-season grasses and range in width from 10.7 m to 91.4 m. From 2004 to 2007 we studied the breeding and wintering bird communities in filter strips adjacent to wooded edges and non-buffered field edges and the effect that grass type and width of filter strips had on bird community composition. We used 5 bird community metrics (total bird density, species richness, scrub-shrub bird density, grassland bird density, and total avian conservation value), species-specific densities, nest densities, and nest survival estimates to assess the habitat value of filter strips for birds. Breeding and wintering bird community metrics were greater in filter strips than in non-buffered field edges but did not differ between cool-season and warm-season grass filter strips. Most breeding bird community metrics were negatively related to the percent cover of orchardgrass (Dactylis glomerata) in ???1 yr. Breeding bird density was greater in narrow (60 m) filter strips. Our results suggest that narrow filter strips adjacent to wooded edges can provide habitat for many bird species but that wide filter strips provide better habitat for grassland birds, particularly obligate grassland species. If bird conservation is an objective, avoid planting orchardgrass in filter strips and reduce or eliminate orchardgrass from filter strips through management practices. Copyright ?? 2011 The

  13. Remedial investigation sampling and analysis plan for J-Field, Aberdeen Proving Ground, Maryland. Volume 1: Field Sampling Plan

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Benioff, P.; Biang, R.; Dolak, D.

    1995-03-01

    The Environmental Management Division (EMD) of Aberdeen Proving Ground (APG), Maryland, is conducting a remedial investigation and feasibility study (RI/FS) of the J-Field area at APG pursuant to the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), as amended. J-Field is within the Edgewood Area of APG in Harford County, Maryland (Figure 1. 1). Since World War II activities in the Edgewood Area have included the development, manufacture, testing, and destruction of chemical agents and munitions. These materials were destroyed at J-Field by open burning and open detonation (OB/OD). Considerable archival information about J-Field exists as a result of effortsmore » by APG staff to characterize the hazards associated with the site. Contamination of J-Field was first detected during an environmental survey of the Edgewood Area conducted in 1977 and 1978 by the US Army Toxic and Hazardous Materials Agency (USATHAMA) (predecessor to the US Army Environmental Center [AEC]). As part of a subsequent USATHAMA -environmental survey, 11 wells were installed and sampled at J-Field. Contamination at J-Field was also detected during a munitions disposal survey conducted by Princeton Aqua Science in 1983. The Princeton Aqua Science investigation involved the installation and sampling of nine wells and the collection and analysis of surficial and deep composite soil samples. In 1986, a Resource Conservation and Recovery Act (RCRA) permit (MD3-21-002-1355) requiring a basewide RCRA Facility Assessment (RFA) and a hydrogeologic assessment of J-Field was issued by the US Environmental Protection Agency (EPA). In 1987, the US Geological Survey (USGS) began a two-phased hydrogeologic assessment in data were collected to model, groundwater flow at J-Field. Soil gas investigations were conducted, several well clusters were installed, a groundwater flow model was developed, and groundwater and surface water monitoring programs were established that continue

  14. Maryland English Journal, Volume 30, Numbers 1-2.

    ERIC Educational Resources Information Center

    Pula, Judith J., Ed.

    1996-01-01

    The two issues of this journal contain articles about aspects of English teaching and samples of student work. The Fall 1995 issue contains: "'I Want More Books Like It': Implementing a Reading Workshop in an Urban Classroom with At-Risk Students" (Rebecca Joseph); "Service Learning Prompt for the Maryland Writing Test" (Kathy A. Megyeri); "My…

  15. Legal Information Resources: A Guide for Maryland Libraries.

    ERIC Educational Resources Information Center

    Miller, Michael S., Ed.

    This guidebook and annotated bibliography is designed to provide a basic listing of sources of state (Maryland), federal, and some general law for the non-law library community, and to offer some insight into the suggested approaches for dealing with legal reference inquiries. Listings of contributors and members of the Task Force on Improving…

  16. Maryland Department of Natural Resources Camp Initiatives Program

    Treesearch

    Kelly R. Schaeffer

    1992-01-01

    The Camp Initiatives Program was developed to increase revenue and visitation through a series of policy changes. During the summer of 1990, the program was evaluated at six Maryland State Parks and found to increase revenue and visitation by 3% and 16%, respectively. More intensive marketing efforts, implementation of a computerized reservation system, increased...

  17. ARSENIC REMOVAL FROM DRINKING WATER BY ADSORPTIVE MEDIA. EPA DEMONSTRATION PROJECT AT QUEEN ANNES COUNTY, MARYLAND SIX-MONTH EVALUATION REPORT

    EPA Science Inventory

    This report documents the activities performed and the results obtained from the first six months of the arsenic removal treatment technology demonstration project at the community of Prospect Bay at Grasonville in Queen Anne’s County, MD. The objectives of the project were to ev...

  18. A Survey of Collaborative Projects of Maryland Postsecondary Institutions.

    ERIC Educational Resources Information Center

    Maryland State Higher Education Commission, Annapolis.

    This report, prepared at the request of an informal Maryland higher education workgroup called "A United Voice for Higher Education," is a summary of various campus collaborative activities. Activities were grouped in the following categories: academic, including joint degree programs, articulation programs, and distance learning…

  19. Year-round spatiotemporal distribution of harbour porpoises within and around the Maryland wind energy area

    PubMed Central

    O’Brien, Michael; Lyubchich, Vyacheslav; Roberts, Jason J.; Halpin, Patrick N.; Rice, Aaron N.; Bailey, Helen

    2017-01-01

    Offshore windfarms provide renewable energy, but activities during the construction phase can affect marine mammals. To understand how the construction of an offshore windfarm in the Maryland Wind Energy Area (WEA) off Maryland, USA, might impact harbour porpoises (Phocoena phocoena), it is essential to determine their poorly understood year-round distribution. Although habitat-based models can help predict the occurrence of species in areas with limited or no sampling, they require validation to determine the accuracy of the predictions. Incorporating more than 18 months of harbour porpoise detection data from passive acoustic monitoring, generalized auto-regressive moving average and generalized additive models were used to investigate harbour porpoise occurrence within and around the Maryland WEA in relation to temporal and environmental variables. Acoustic detection metrics were compared to habitat-based density estimates derived from aerial and boat-based sightings to validate the model predictions. Harbour porpoises occurred significantly more frequently during January to May, and foraged significantly more often in the evenings to early mornings at sites within and outside the Maryland WEA. Harbour porpoise occurrence peaked at sea surface temperatures of 5°C and chlorophyll a concentrations of 4.5 to 7.4 mg m-3. The acoustic detections were significantly correlated with the predicted densities, except at the most inshore site. This study provides insight into previously unknown fine-scale spatial and temporal patterns in distribution of harbour porpoises offshore of Maryland. The results can be used to help inform future monitoring and mitigate the impacts of windfarm construction and other human activities. PMID:28467455

  20. Year-round spatiotemporal distribution of harbour porpoises within and around the Maryland wind energy area.

    PubMed

    Wingfield, Jessica E; O'Brien, Michael; Lyubchich, Vyacheslav; Roberts, Jason J; Halpin, Patrick N; Rice, Aaron N; Bailey, Helen

    2017-01-01

    Offshore windfarms provide renewable energy, but activities during the construction phase can affect marine mammals. To understand how the construction of an offshore windfarm in the Maryland Wind Energy Area (WEA) off Maryland, USA, might impact harbour porpoises (Phocoena phocoena), it is essential to determine their poorly understood year-round distribution. Although habitat-based models can help predict the occurrence of species in areas with limited or no sampling, they require validation to determine the accuracy of the predictions. Incorporating more than 18 months of harbour porpoise detection data from passive acoustic monitoring, generalized auto-regressive moving average and generalized additive models were used to investigate harbour porpoise occurrence within and around the Maryland WEA in relation to temporal and environmental variables. Acoustic detection metrics were compared to habitat-based density estimates derived from aerial and boat-based sightings to validate the model predictions. Harbour porpoises occurred significantly more frequently during January to May, and foraged significantly more often in the evenings to early mornings at sites within and outside the Maryland WEA. Harbour porpoise occurrence peaked at sea surface temperatures of 5°C and chlorophyll a concentrations of 4.5 to 7.4 mg m-3. The acoustic detections were significantly correlated with the predicted densities, except at the most inshore site. This study provides insight into previously unknown fine-scale spatial and temporal patterns in distribution of harbour porpoises offshore of Maryland. The results can be used to help inform future monitoring and mitigate the impacts of windfarm construction and other human activities.

  1. Comparison of caregiver strain in Parkinson's disease between Yamagata, Japan, and Maryland, The United States.

    PubMed

    Tanji, Haruko; Koyama, Shingo; Wada, Manabu; Kawanami, Toru; Kurita, Keiji; Tamiya, Gen; Saito, Naohiro; Suzuki, Kyoko; Kato, Takeo; Anderson, Karen E; Gruber-Baldini, Ann L; Fishman, Paul S; Reich, Stephen G; Weiner, William J; Shulman, Lisa M

    2013-06-01

    Japan and the United States (US) have different cultures of caregiving including differences in family structure and social programs that may influence caregiver strain. Differences in caregiver strain between regions in Japan and in the US have not been investigated in patient-spouse dyads in PD. To compare caregiver strain in spouses of PD patients between Yamagata, Japan and Maryland, US. Correlations between caregiver strain and patient/spousal variables are also examined. In Yamagata and Maryland, spouses of patients with PD completed questionnaires assessing caregiver strain. Patients and spouses completed scales assessing mental health, and medical co-morbidity. PD severity and disability were assessed with the Unified Parkinson's Disease Rating Scale and the Schwab and England Activities of Daily Living Scale. Results in the two regions were compared with Chi-square and Student's t-tests. Relationships between caregiver strain and patient/spousal variables were analyzed with univariate correlations and multivariate regression. 178 Spouse-patient pairs were assessed. The level of caregiver strain in PD did not differ between Yamagata, Japan and Maryland, US despite differences in demographics and social support programs in the two regions. Yamagata spouses reported physical, time and financial constraints, while Maryland spouses reported more emotional distress. In both regions, spousal depression was a significant contributor to caregiver strain. Different approaches to reduce caregiver strain will likely be necessary in Yamagata and Maryland since the contributing factors to caregiver strain are influenced by differences in culture and social supports in each country. Copyright © 2013 Elsevier Ltd. All rights reserved.

  2. Aquatic Plant Control Research Program. A Survey of the Continental United States for Pathogens of Eurasian Watermilfoil

    DTIC Science & Technology

    1988-04-01

    Res. Old boat basin Chelan 13 Sep 1984 Rock Island Res. Mouth of Wenatchee River Chelan 13 Sep 1984 Rock Island Res. Hannah Mining Co. Douglas 13 Sep...States, including ponds, lakes, reser- voirs, rivers , and canals. At the conclusion of the survey, 792 isolates had been collected from tissue samples...acre (9-ha) pond located in Anne Arundel County, Maryland, and an area near the Northeast River in Cecil County, Maryland--and suggested the declines

  3. New state record for Culiseta impatiens in Maryland.

    PubMed

    Pagac, B B; Harlan, H J; Doran, S D; Brosnihan, M A

    1992-06-01

    Culiseta impatiens is reported for the first time from Maryland. Collections from the southwestern border of Fort George G. Meade extend the range of this species over 400 km farther south than previous records. Multiple collections from 4 separate traps during 2 years indicate a population of Cs. impatiens is probably established in the collection area.

  4. Teacher Supply and Demand in Maryland 1987-1990.

    ERIC Educational Resources Information Center

    Maryland State Board for Higher Education, Annapolis.

    This report presents an overview of teacher supply and demand in the state of Maryland. Section I provides a description of the national debate about teacher shortages and raises the question of where imbalances in the supply and demand for teachers exist and how they may be rectified. In section II, the general purposes of the study are presented…

  5. Maryland's Graduation Requirements: Local Effects of Policy Reform.

    ERIC Educational Resources Information Center

    Wilson, Bruce L.; And Others

    In 1985, Maryland became one of 45 states that enacted new and tougher graduation requirements. This document presents findings of a 4-year study that examined the effects of the new requirements on local schools and the students and staff who work in them. Three site visits each were made to five selected high schools. Data collection included:…

  6. Development of high quality pervious concrete specifications for Maryland conditions.

    DOT National Transportation Integrated Search

    2013-02-01

    One of the main objectives of this research was to develop preliminary specifications for high quality : pervious concrete suitable for use in Maryland State Highway Administration (SHA) projects. The study : utilized aggregates that are used in SHA ...

  7. Using the annual phosphorus loss estimator (APLE) model to evaluate the University of Maryland phosphorus management tool

    USDA-ARS?s Scientific Manuscript database

    Maryland’s phosphorus site index (PSI) has been used to guide management decisions to minimize the potential for P loss from agricultural fields in Maryland since the adoption of the Water Quality Improvement Act of 1998. The index was recently revised and renamed the University of Maryland Phospho...

  8. USING EMERGY TO QUANTIFY AN ECONOMIC HIERACHY BETWEEN FOUR U.S. STATES-MARYLAND, DELAWARE, NEW JERSEY, AND PENNSYLVANIA

    EPA Science Inventory

    Using emergy to quantify an economic hierarchy between four U.S. states - Maryland, Delaware, New Jersey and Pennsylvania
    A regional emergy evaluation was completed for each of four adjacent states with differing levels and sources of economic productivity ? Maryland, Delaware...

  9. Historic Properties Report: Harry Diamond Laboratories, Maryland and Satellite Installations Woodbridge Research Facility, Virginia and Blossom Point Field Test Facility, Maryland

    DTIC Science & Technology

    1984-07-01

    HISTORIC PROPERTIES REPORT HARRY DIAMOND LABORATORIES, MARYLAND ,’ / .’- AND SATELLITE INSTALLATIONS ~WOODBRIDGE RESEARCH FACILITY, VIRGINIA AND ,00... report . METHODOLOGY 1. Documentary Research Harry Diamond Laboratories (HDL) and its two satellite facilities at Woodbridge and Blossom Point are...drawings, and written history. Interagency Archeological Services and U.S. Army, Harry Diamond Laboratories. 106 Case Report and Mitigation Plan: Ballast

  10. 32 CFR 724.120 - National Capital Region (NCR).

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... DISCHARGE REVIEW BOARD Definitions § 724.120 National Capital Region (NCR). The District of Columbia; Prince Georges and Montgomery Counties in Maryland; Arlington, Fairfax, Loudoun, and Prince William Counties in...

  11. 32 CFR 865.103 - Definition of terms.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... (NCR). The District of Columbia; Prince Georges and Montgomery Counties in Maryland; Arlington, Fairfax, Loudoun, and Prince William Counties in Virginia; and all cities and towns included within the outer...

  12. State of Maryland Intelligent Transportation Systems: Security and Implementation Recommendations.

    DOT National Transportation Integrated Search

    1997-11-01

    At the direction of the Volpe National Transportation Systems Center of the US Department of Transportation (US DOT), a two-phase study of the security vulnerability of Maryland Intelligent Transportation Systems (ITS) was conducted from July until N...

  13. Maryland and the Southern Regional Education Board, December 2014

    ERIC Educational Resources Information Center

    Southern Regional Education Board (SREB), 2014

    2014-01-01

    This report details Maryland's participation in Southern Regional Education Board (SREB) programs and services from December 2013 through November 2014. Appropriations from member states support SREB's core operations and general services. SREB leverages the long-standing commitment of member states to attract external funding for an array of…

  14. Instructional Improvement in Maryland: Impact on Educators and Students.

    ERIC Educational Resources Information Center

    Roberts, Jane M. E.; Kenney, Jane L.

    The impact of the School Improvement Through Instructional Process (SITIP) program in Maryland schools was evaluated. The program encourages application of research on planned change to implement one or more of four instructional models: (1) Active Teaching--emphasis on direct instruction, review and discussion of homework, individually supervised…

  15. 41 CFR 105-53.151 - Geographic composition, addresses, and telephone numbers.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Columbia; Counties of Montgomery and Prince Georges in Maryland; and the City of Alexandria and the Counties of Arlington, Fairfax, Loudoun, and Prince William in Virginia); Seventh and D Streets, SW...

  16. 32 CFR 70.3 - Definitions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... District of Columbia; Prince Georges and Montgomery Counties in Maryland; Arlington, Fairfax, Loudoun, and Prince William Counties in Virginia; and all cities and towns included within the outer boundaries of the...

  17. Work plan for focused feasibility study of the toxic burning pits area at J-Field, Aberdeen Proving Ground, Maryland

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Biang, C.; Benioff, P.; Martino, L.

    1995-03-01

    The Environmental Management Division (EMD) of Aberdeen Proving Ground (APG), Maryland, is conducting a remedial investigation and feasibility study (RI/FS) of the J-Field area at APG pursuant to the Comprehensive Environmental Response, Compensation, and Liability Act, as amended (CERCIA). J-Field is within the Edgewood Area of APG in Harford County, Maryland. Since World War II, activities in the Edgewood Area have included the development, manufacture, testing, and destruction of chemical agents and munitions. These materials were destroyed at J-Field by open burning and open detonation (OB/OD). Considerable archival information about J-Field exists as a result of efforts by APG staffmore » to characterize the hazards associated with the site. Contamination of J-Field was first detected during an environmental survey of the Edgewood Area conducted in 1977 and 1978 by the US Army Toxic and Hazardous Materials Agency (USATHAMA)(predecessor to the US Army Environmental Center). As part of a subsequent USATHAMA environmental survey, 11 wells were installed and sampled at J-Field. Contamination at J-Field was also detected during a munitions disposal survey conducted by Princeton Aqua Science in 1983. The Princeton Aqua Science investigation involved the installation and sampling of nine wells and the collection and analysis of surficial and deep composite soil samples. In 1986, a Resource Conservation and Recovery Act (RCRA) permit (MD3-21-0021355) requiring a basewide RCRA Facility Assessment (RFA) and a hydrogeologic assessment of J-Field was issued by the US Environmental Protection Agency (EPA). In 1987, the US Geological Survey (USGS) began a two-phased hydrogeologic assessment in which data were collected to model groundwater flow at J-Field. Soil gas investigations were conducted, several well clusters were installed, a groundwater flow model was developed, and groundwater and surface water monitoring programs were established that continue today-« less

  18. Forest-land clearing and wood recovery in Maryland

    Treesearch

    James T. Bones

    1980-01-01

    Changing land use often results in removal of the existing forest cover. During a resurvey of Maryland's timber resources, a study was conducted to measure the losses of wood fiber attributable to forest-land clearing. An estimated 107 million cubic feet of growing stock were destroyed on 164,000 acres of commercial forest land cleared between 1961 and 1972. For...

  19. Astronaut Mike Hopkins Visit to Maryland Science Center

    NASA Image and Video Library

    2014-06-09

    NASA Astronaut Mike Hopkins explains what it was like to live on the International Space Station for 6 months to visitors at the Maryland Science Center in Baltimore, MD on Monday, June 9, 2014. Hopkins served on Expeditions 37 and 38 with Russian cosmonauts Oleg Kotov and Sergey Ryazanskiy and returned home in March, 2014. (Photo Credit: NASA/Aubrey Gemignani)

  20. The Effects of the Maryland Online Individualized Education Program Goal Wizard on Writing Standards Based Annual Goals

    ERIC Educational Resources Information Center

    Lewis, Kimberly A.

    2011-01-01

    The purpose of this study was to examine the efficacy of the Maryland Online Individualized Education Program Goal Wizard on writing standards based annual goals. Specifically, 100 novice special education teachers form a large urban school system in Maryland were randomly assigned to one of two groups. The experimental group received one…